Merge tag 'apparmor-pr-2017-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / tools / firewire / decode-fcp.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/firewire-constants.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5
6 #include "list.h"
7 #include "nosy-dump.h"
8
9 #define CSR_FCP_COMMAND                 0xfffff0000b00ull
10 #define CSR_FCP_RESPONSE                0xfffff0000d00ull
11
12 static const char * const ctype_names[] = {
13         [0x0] = "control",              [0x8] = "not implemented",
14         [0x1] = "status",               [0x9] = "accepted",
15         [0x2] = "specific inquiry",     [0xa] = "rejected",
16         [0x3] = "notify",               [0xb] = "in transition",
17         [0x4] = "general inquiry",      [0xc] = "stable",
18         [0x5] = "(reserved 0x05)",      [0xd] = "changed",
19         [0x6] = "(reserved 0x06)",      [0xe] = "(reserved 0x0e)",
20         [0x7] = "(reserved 0x07)",      [0xf] = "interim",
21 };
22
23 static const char * const subunit_type_names[] = {
24         [0x00] = "monitor",             [0x10] = "(reserved 0x10)",
25         [0x01] = "audio",               [0x11] = "(reserved 0x11)",
26         [0x02] = "printer",             [0x12] = "(reserved 0x12)",
27         [0x03] = "disc",                [0x13] = "(reserved 0x13)",
28         [0x04] = "tape recorder/player",[0x14] = "(reserved 0x14)",
29         [0x05] = "tuner",               [0x15] = "(reserved 0x15)",
30         [0x06] = "ca",                  [0x16] = "(reserved 0x16)",
31         [0x07] = "camera",              [0x17] = "(reserved 0x17)",
32         [0x08] = "(reserved 0x08)",     [0x18] = "(reserved 0x18)",
33         [0x09] = "panel",               [0x19] = "(reserved 0x19)",
34         [0x0a] = "bulletin board",      [0x1a] = "(reserved 0x1a)",
35         [0x0b] = "camera storage",      [0x1b] = "(reserved 0x1b)",
36         [0x0c] = "(reserved 0x0c)",     [0x1c] = "vendor unique",
37         [0x0d] = "(reserved 0x0d)",     [0x1d] = "all subunit types",
38         [0x0e] = "(reserved 0x0e)",     [0x1e] = "subunit_type extended to next byte",
39         [0x0f] = "(reserved 0x0f)",     [0x1f] = "unit",
40 };
41
42 struct avc_enum {
43         int value;
44         const char *name;
45 };
46
47 struct avc_field {
48         const char *name;       /* Short name for field. */
49         int offset;             /* Location of field, specified in bits; */
50                                 /* negative means from end of packet.    */
51         int width;              /* Width of field, 0 means use data_length. */
52         struct avc_enum *names;
53 };
54
55 struct avc_opcode_info {
56         const char *name;
57         struct avc_field fields[8];
58 };
59
60 struct avc_enum power_field_names[] = {
61         { 0x70, "on" },
62         { 0x60, "off" },
63         { }
64 };
65
66 static const struct avc_opcode_info opcode_info[256] = {
67
68         /* TA Document 1999026 */
69         /* AV/C Digital Interface Command Set General Specification 4.0 */
70         [0xb2] = { "power", {
71                         { "state", 0, 8, power_field_names }
72                 }
73         },
74         [0x30] = { "unit info", {
75                         { "foo", 0, 8 },
76                         { "unit_type", 8, 5 },
77                         { "unit", 13, 3 },
78                         { "company id", 16, 24 },
79                 }
80         },
81         [0x31] = { "subunit info" },
82         [0x01] = { "reserve" },
83         [0xb0] = { "version" },
84         [0x00] = { "vendor dependent" },
85         [0x02] = { "plug info" },
86         [0x12] = { "channel usage" },
87         [0x24] = { "connect" },
88         [0x20] = { "connect av" },
89         [0x22] = { "connections" },
90         [0x11] = { "digital input" },
91         [0x10] = { "digital output" },
92         [0x25] = { "disconnect" },
93         [0x21] = { "disconnect av" },
94         [0x19] = { "input plug signal format" },
95         [0x18] = { "output plug signal format" },
96         [0x1f] = { "general bus setup" },
97
98         /* TA Document 1999025 */
99         /* AV/C Descriptor Mechanism Specification Version 1.0 */
100         [0x0c] = { "create descriptor" },
101         [0x08] = { "open descriptor" },
102         [0x09] = { "read descriptor" },
103         [0x0a] = { "write descriptor" },
104         [0x05] = { "open info block" },
105         [0x06] = { "read info block" },
106         [0x07] = { "write info block" },
107         [0x0b] = { "search descriptor" },
108         [0x0d] = { "object number select" },
109
110         /* TA Document 1999015 */
111         /* AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
112         [0xb3] = { "rate", {
113                         { "subfunction", 0, 8 },
114                         { "result", 8, 8 },
115                         { "plug_type", 16, 8 },
116                         { "plug_id", 16, 8 },
117                 }
118         },
119
120         /* TA Document 1999008 */
121         /* AV/C Audio Subunit Specification 1.0 */
122         [0xb8] = { "function block" },
123
124         /* TA Document 2001001 */
125         /* AV/C Panel Subunit Specification 1.1 */
126         [0x7d] = { "gui update" },
127         [0x7e] = { "push gui data" },
128         [0x7f] = { "user action" },
129         [0x7c] = { "pass through" },
130
131         /* */
132         [0x26] = { "asynchronous connection" },
133 };
134
135 struct avc_frame {
136         uint32_t operand0:8;
137         uint32_t opcode:8;
138         uint32_t subunit_id:3;
139         uint32_t subunit_type:5;
140         uint32_t ctype:4;
141         uint32_t cts:4;
142 };
143
144 static void
145 decode_avc(struct link_transaction *t)
146 {
147         struct avc_frame *frame =
148             (struct avc_frame *) t->request->packet.write_block.data;
149         const struct avc_opcode_info *info;
150         const char *name;
151         char buffer[32];
152         int i;
153
154         info = &opcode_info[frame->opcode];
155         if (info->name == NULL) {
156                 snprintf(buffer, sizeof(buffer),
157                          "(unknown opcode 0x%02x)", frame->opcode);
158                 name = buffer;
159         } else {
160                 name = info->name;
161         }
162
163         printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
164             ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
165             frame->subunit_id, name);
166
167         for (i = 0; info->fields[i].name != NULL; i++)
168                 printf(", %s", info->fields[i].name);
169
170         printf("\n");
171 }
172
173 int
174 decode_fcp(struct link_transaction *t)
175 {
176         struct avc_frame *frame =
177             (struct avc_frame *) t->request->packet.write_block.data;
178         unsigned long long offset =
179             ((unsigned long long) t->request->packet.common.offset_high << 32) |
180             t->request->packet.common.offset_low;
181
182         if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK_REQUEST)
183                 return 0;
184
185         if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
186                 switch (frame->cts) {
187                 case 0x00:
188                         decode_avc(t);
189                         break;
190                 case 0x01:
191                         printf("cal fcp frame (cts=0x01)\n");
192                         break;
193                 case 0x02:
194                         printf("ehs fcp frame (cts=0x02)\n");
195                         break;
196                 case 0x03:
197                         printf("havi fcp frame (cts=0x03)\n");
198                         break;
199                 case 0x0e:
200                         printf("vendor specific fcp frame (cts=0x0e)\n");
201                         break;
202                 case 0x0f:
203                         printf("extended cts\n");
204                         break;
205                 default:
206                         printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
207                         break;
208                 }
209                 return 1;
210         }
211
212         return 0;
213 }
214