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-rw-r--r--tools/firewire/decode-fcp.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/tools/firewire/decode-fcp.c b/tools/firewire/decode-fcp.c
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1#include <stdlib.h>
2#include <stdio.h>
3#include "list.h"
4#include "nosy-dump.h"
5
6#define CSR_FCP_COMMAND 0xfffff0000b00ull
7#define CSR_FCP_RESPONSE 0xfffff0000d00ull
8
9static const char * const ctype_names[16] = {
10 "control",
11 "status",
12 "specific inquiry",
13 "notify",
14 "general inquiry",
15 "(reserved 0x05)",
16 "(reserved 0x06)",
17 "(reserved 0x07)",
18 "not implemented",
19 "accepted",
20 "rejected",
21 "in transition",
22 "stable",
23 "changed",
24 "(reserved 0x0e)",
25 "interim"
26};
27
28static const char * const subunit_type_names[32] = {
29 "monitor",
30 "audio",
31 "printer",
32 "disc",
33 "tape recorder/player",
34 "tuner",
35 "ca",
36 "camera",
37 "(reserved 0x08)",
38 "panel",
39 "bulletin board",
40 "camera storage",
41 "(reserved 0x0c)",
42 "(reserved 0x0d)",
43 "(reserved 0x0e)",
44 "(reserved 0x0f)",
45 "(reserved 0x10)",
46 "(reserved 0x11)",
47 "(reserved 0x12)",
48 "(reserved 0x13)",
49 "(reserved 0x14)",
50 "(reserved 0x15)",
51 "(reserved 0x16)",
52 "(reserved 0x17)",
53 "(reserved 0x18)",
54 "(reserved 0x19)",
55 "(reserved 0x1a)",
56 "(reserved 0x1b)",
57 "vendor unique",
58 "all subunit types",
59 "subunit_type extended to next byte",
60 "unit"
61};
62
63struct avc_enum {
64 int value;
65 const char *name;
66};
67
68struct avc_field {
69 const char *name; /* Short name for field. */
70 int offset; /* Location of field, specified in bits.
71 * Negative means from end of packet */
72 int width; /* Width of field, 0 means use data_length. */
73 struct avc_enum *names;
74};
75
76struct avc_opcode_info {
77 const char *name;
78 struct avc_field fields[8];
79};
80
81struct avc_enum power_field_names[] = {
82 { 0x70, "on" },
83 { 0x60, "off" },
84 { }
85};
86
87static const struct avc_opcode_info opcode_info[256] = {
88
89 /* TA Document 1999026
90 * AV/C Digital Interface Command Set General Specification
91 * Version 4.0 */
92 [0xb2] =
93 { "power", {
94 { "state", 0, 8, power_field_names }
95 }
96 },
97 [0x30] =
98 { "unit info", {
99 { "foo", 0, 8 },
100 { "unit_type", 8, 5 },
101 { "unit", 13, 3 },
102 { "company id", 16, 24 },
103 }
104 },
105 [0x31] = { "subunit info" },
106 [0x01] = { "reserve" },
107 [0xb0] = { "version" },
108 [0x00] = { "vendor dependent" },
109
110 [0x02] = { "plug info" },
111 [0x12] = { "channel usage" },
112 [0x24] = { "connect" },
113 [0x20] = { "connect av" },
114 [0x22] = { "connections" },
115 [0x11] = { "digital input" },
116 [0x10] = { "digital output" },
117 [0x25] = { "disconnect" },
118 [0x21] = { "disconnect av" },
119 [0x19] = { "input plug signal format" },
120 [0x18] = { "output plug signal format" },
121 [0x1f] = { "general bus setup" },
122
123 /* TA Document 1999025
124 * AV/C Descriptor Mechanism Specification Version 1.0 */
125 [0x0c] = { "create descriptor" },
126 [0x08] = { "open descriptor" },
127 [0x09] = { "read descriptor" },
128 [0x0a] = { "write descriptor" },
129 [0x05] = { "open info block" },
130 [0x06] = { "read info block" },
131 [0x07] = { "write info block" },
132 [0x0b] = { "search descriptor" },
133 [0x0d] = { "object number select" },
134
135 /* TA Document 1999015
136 * AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
137 [0xb3] = { "rate", {
138 { "subfunction", 0, 8 },
139 { "result", 8, 8 },
140 { "plug_type", 16, 8 },
141 { "plug_id", 16, 8 },
142 }
143 },
144
145 /* TA Document 1999008
146 * AV/C Audio Subunit Specification 1.0 */
147 [0xb8] = { "function block" },
148
149 /* TA Document 2001001
150 * AV/C Panel Subunit Specification 1.1 */
151 [0x7d] = { "gui update" },
152 [0x7e] = { "push gui data" },
153 [0x7f] = { "user action" },
154 [0x7c] = { "pass through" },
155
156 /* */
157 [0x26] = { "asynchronous connection" },
158};
159
160struct avc_frame {
161 unsigned int operand0 : 8;
162 unsigned int opcode : 8;
163 unsigned int subunit_id : 3;
164 unsigned int subunit_type : 5;
165 unsigned int ctype : 4;
166 unsigned int cts : 4;
167};
168
169static void
170decode_avc(struct link_transaction *t)
171{
172 struct avc_frame *frame = (struct avc_frame *) t->request->packet.write_block.data;
173 const struct avc_opcode_info *info;
174 const char *name;
175 char buffer[32];
176 int i;
177
178 info = &opcode_info[frame->opcode];
179 if (info->name == NULL) {
180 snprintf(buffer, sizeof buffer, "(unknown opcode 0x%02x)", frame->opcode);
181 name = buffer;
182 } else {
183 name = info->name;
184 }
185
186 printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
187 ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
188 frame->subunit_id, name);
189
190 for (i = 0; info->fields[i].name != NULL; i++) {
191 printf(", %s", info->fields[i].name);
192 }
193
194 printf("\n");
195}
196
197
198int
199decode_fcp(struct link_transaction *t)
200{
201 struct avc_frame *frame = (struct avc_frame *) t->request->packet.write_block.data;
202 unsigned long long offset;
203
204 offset = ((unsigned long long) t->request->packet.common.offset_high << 32) |
205 t->request->packet.common.offset_low;
206
207 if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK)
208 return 0;
209
210 if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
211 switch (frame->cts) {
212 case 0x00:
213 decode_avc(t);
214 break;
215 case 0x01:
216 printf("cal fcp frame (cts=0x01)\n");
217 break;
218 case 0x02:
219 printf("ehs fcp frame (cts=0x02)\n");
220 break;
221 case 0x03:
222 printf("havi fcp frame (cts=0x03)\n");
223 break;
224 case 0x0e:
225 printf("vendor specific fcp frame (cts=0x0e)\n");
226 break;
227 case 0x0f:
228 printf("extended cts\n");
229 break;
230 default:
231 printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
232 break;
233 }
234 return 1;
235 }
236
237 return 0;
238}
239
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