9cd1550db24adeccbf12dfdf3c325da3a3fc3752
[linux-3.10.git] / tools / firewire / decode-fcp.c
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
9 static const char * const ctype_names[] = {
10         [0x0] = "control",              [0x8] = "not implemented",
11         [0x1] = "status",               [0x9] = "accepted",
12         [0x2] = "specific inquiry",     [0xa] = "rejected",
13         [0x3] = "notify",               [0xb] = "in transition",
14         [0x4] = "general inquiry",      [0xc] = "stable",
15         [0x5] = "(reserved 0x05)",      [0xd] = "changed",
16         [0x6] = "(reserved 0x06)",      [0xe] = "(reserved 0x0e)",
17         [0x7] = "(reserved 0x07)",      [0xf] = "interim",
18 };
19
20 static const char * const subunit_type_names[] = {
21         [0x00] = "monitor",             [0x10] = "(reserved 0x10)",
22         [0x01] = "audio",               [0x11] = "(reserved 0x11)",
23         [0x02] = "printer",             [0x12] = "(reserved 0x12)",
24         [0x03] = "disc",                [0x13] = "(reserved 0x13)",
25         [0x04] = "tape recorder/player",[0x14] = "(reserved 0x14)",
26         [0x05] = "tuner",               [0x15] = "(reserved 0x15)",
27         [0x06] = "ca",                  [0x16] = "(reserved 0x16)",
28         [0x07] = "camera",              [0x17] = "(reserved 0x17)",
29         [0x08] = "(reserved 0x08)",     [0x18] = "(reserved 0x18)",
30         [0x09] = "panel",               [0x19] = "(reserved 0x19)",
31         [0x0a] = "bulletin board",      [0x1a] = "(reserved 0x1a)",
32         [0x0b] = "camera storage",      [0x1b] = "(reserved 0x1b)",
33         [0x0c] = "(reserved 0x0c)",     [0x1c] = "vendor unique",
34         [0x0d] = "(reserved 0x0d)",     [0x1d] = "all subunit types",
35         [0x0e] = "(reserved 0x0e)",     [0x1e] = "subunit_type extended to next byte",
36         [0x0f] = "(reserved 0x0f)",     [0x1f] = "unit",
37 };
38
39 struct avc_enum {
40         int value;
41         const char *name;
42 };
43
44 struct avc_field {
45         const char *name;       /* Short name for field. */
46         int offset;             /* Location of field, specified in bits; */
47                                 /* negative means from end of packet.    */
48         int width;              /* Width of field, 0 means use data_length. */
49         struct avc_enum *names;
50 };
51
52 struct avc_opcode_info {
53         const char *name;
54         struct avc_field fields[8];
55 };
56
57 struct avc_enum power_field_names[] = {
58         { 0x70, "on" },
59         { 0x60, "off" },
60         { }
61 };
62
63 static const struct avc_opcode_info opcode_info[256] = {
64
65         /* TA Document 1999026 */
66         /* AV/C Digital Interface Command Set General Specification 4.0 */
67         [0xb2] = { "power", {
68                         { "state", 0, 8, power_field_names }
69                 }
70         },
71         [0x30] = { "unit info", {
72                         { "foo", 0, 8 },
73                         { "unit_type", 8, 5 },
74                         { "unit", 13, 3 },
75                         { "company id", 16, 24 },
76                 }
77         },
78         [0x31] = { "subunit info" },
79         [0x01] = { "reserve" },
80         [0xb0] = { "version" },
81         [0x00] = { "vendor dependent" },
82         [0x02] = { "plug info" },
83         [0x12] = { "channel usage" },
84         [0x24] = { "connect" },
85         [0x20] = { "connect av" },
86         [0x22] = { "connections" },
87         [0x11] = { "digital input" },
88         [0x10] = { "digital output" },
89         [0x25] = { "disconnect" },
90         [0x21] = { "disconnect av" },
91         [0x19] = { "input plug signal format" },
92         [0x18] = { "output plug signal format" },
93         [0x1f] = { "general bus setup" },
94
95         /* TA Document 1999025 */
96         /* AV/C Descriptor Mechanism Specification Version 1.0 */
97         [0x0c] = { "create descriptor" },
98         [0x08] = { "open descriptor" },
99         [0x09] = { "read descriptor" },
100         [0x0a] = { "write descriptor" },
101         [0x05] = { "open info block" },
102         [0x06] = { "read info block" },
103         [0x07] = { "write info block" },
104         [0x0b] = { "search descriptor" },
105         [0x0d] = { "object number select" },
106
107         /* TA Document 1999015 */
108         /* AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
109         [0xb3] = { "rate", {
110                         { "subfunction", 0, 8 },
111                         { "result", 8, 8 },
112                         { "plug_type", 16, 8 },
113                         { "plug_id", 16, 8 },
114                 }
115         },
116
117         /* TA Document 1999008 */
118         /* AV/C Audio Subunit Specification 1.0 */
119         [0xb8] = { "function block" },
120
121         /* TA Document 2001001 */
122         /* AV/C Panel Subunit Specification 1.1 */
123         [0x7d] = { "gui update" },
124         [0x7e] = { "push gui data" },
125         [0x7f] = { "user action" },
126         [0x7c] = { "pass through" },
127
128         /* */
129         [0x26] = { "asynchronous connection" },
130 };
131
132 struct avc_frame {
133         uint32_t operand0:8;
134         uint32_t opcode:8;
135         uint32_t subunit_id:3;
136         uint32_t subunit_type:5;
137         uint32_t ctype:4;
138         uint32_t cts:4;
139 };
140
141 static void
142 decode_avc(struct link_transaction *t)
143 {
144         struct avc_frame *frame =
145             (struct avc_frame *) t->request->packet.write_block.data;
146         const struct avc_opcode_info *info;
147         const char *name;
148         char buffer[32];
149         int i;
150
151         info = &opcode_info[frame->opcode];
152         if (info->name == NULL) {
153                 snprintf(buffer, sizeof(buffer),
154                          "(unknown opcode 0x%02x)", frame->opcode);
155                 name = buffer;
156         } else {
157                 name = info->name;
158         }
159
160         printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
161             ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
162             frame->subunit_id, name);
163
164         for (i = 0; info->fields[i].name != NULL; i++)
165                 printf(", %s", info->fields[i].name);
166
167         printf("\n");
168 }
169
170 int
171 decode_fcp(struct link_transaction *t)
172 {
173         struct avc_frame *frame =
174             (struct avc_frame *) t->request->packet.write_block.data;
175         unsigned long long offset =
176             ((unsigned long long) t->request->packet.common.offset_high << 32) |
177             t->request->packet.common.offset_low;
178
179         if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK)
180                 return 0;
181
182         if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
183                 switch (frame->cts) {
184                 case 0x00:
185                         decode_avc(t);
186                         break;
187                 case 0x01:
188                         printf("cal fcp frame (cts=0x01)\n");
189                         break;
190                 case 0x02:
191                         printf("ehs fcp frame (cts=0x02)\n");
192                         break;
193                 case 0x03:
194                         printf("havi fcp frame (cts=0x03)\n");
195                         break;
196                 case 0x0e:
197                         printf("vendor specific fcp frame (cts=0x0e)\n");
198                         break;
199                 case 0x0f:
200                         printf("extended cts\n");
201                         break;
202                 default:
203                         printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
204                         break;
205                 }
206                 return 1;
207         }
208
209         return 0;
210 }
211