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