aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath6kl/bmi.h
blob: f1ca6812456df4d85c5bd85ef37c48c43b3c9c61 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/*
 * Copyright (c) 2004-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef BMI_H
#define BMI_H

/*
 * Bootloader Messaging Interface (BMI)
 *
 * BMI is a very simple messaging interface used during initialization
 * to read memory, write memory, execute code, and to define an
 * application entry PC.
 *
 * It is used to download an application to ATH6KL, to provide
 * patches to code that is already resident on ATH6KL, and generally
 * to examine and modify state.  The Host has an opportunity to use
 * BMI only once during bootup.  Once the Host issues a BMI_DONE
 * command, this opportunity ends.
 *
 * The Host writes BMI requests to mailbox0, and reads BMI responses
 * from mailbox0.   BMI requests all begin with a command
 * (see below for specific commands), and are followed by
 * command-specific data.
 *
 * Flow control:
 * The Host can only issue a command once the Target gives it a
 * "BMI Command Credit", using ATH6KL Counter #4.  As soon as the
 * Target has completed a command, it issues another BMI Command
 * Credit (so the Host can issue the next command).
 *
 * BMI handles all required Target-side cache flushing.
 */

/* BMI Commands */

#define BMI_NO_COMMAND                      0

#define BMI_DONE                            1
/*
 * Semantics: Host is done using BMI
 * Request format:
 *    u32 command (BMI_DONE)
 * Response format: none
 */

#define BMI_READ_MEMORY                     2
/*
 * Semantics: Host reads ATH6KL memory
 * Request format:
 *    u32 command (BMI_READ_MEMORY)
 *    u32 address
 *    u32 length, at most BMI_DATASZ_MAX
 * Response format:
 *    u8 data[length]
 */

#define BMI_WRITE_MEMORY                    3
/*
 * Semantics: Host writes ATH6KL memory
 * Request format:
 *    u32 command (BMI_WRITE_MEMORY)
 *    u32 address
 *    u32 length, at most BMI_DATASZ_MAX
 *    u8 data[length]
 * Response format: none
 */

#define BMI_EXECUTE                         4
/*
 * Semantics: Causes ATH6KL to execute code
 * Request format:
 *    u32 command (BMI_EXECUTE)
 *    u32 address
 *    u32 parameter
 * Response format:
 *    u32 return value
 */

#define BMI_SET_APP_START                   5
/*
 * Semantics: Set Target application starting address
 * Request format:
 *    u32 command (BMI_SET_APP_START)
 *    u32 address
 * Response format: none
 */

#define BMI_READ_SOC_REGISTER               6
/*
 * Semantics: Read a 32-bit Target SOC register.
 * Request format:
 *    u32 command (BMI_READ_REGISTER)
 *    u32 address
 * Response format:
 *    u32 value
 */

#define BMI_WRITE_SOC_REGISTER              7
/*
 * Semantics: Write a 32-bit Target SOC register.
 * Request format:
 *    u32 command (BMI_WRITE_REGISTER)
 *    u32 address
 *    u32 value
 *
 * Response format: none
 */

#define BMI_GET_TARGET_ID                  8
#define BMI_GET_TARGET_INFO                8
/*
 * Semantics: Fetch the 4-byte Target information
 * Request format:
 *    u32 command (BMI_GET_TARGET_ID/INFO)
 * Response format1 (old firmware):
 *    u32 TargetVersionID
 * Response format2 (newer firmware):
 *    u32 TARGET_VERSION_SENTINAL
 *    struct bmi_target_info;
 */

#define TARGET_VERSION_SENTINAL 0xffffffff
#define TARGET_TYPE_AR6003      3
#define TARGET_TYPE_AR6004      5
#define BMI_ROMPATCH_INSTALL               9
/*
 * Semantics: Install a ROM Patch.
 * Request format:
 *    u32 command (BMI_ROMPATCH_INSTALL)
 *    u32 Target ROM Address
 *    u32 Target RAM Address or Value (depending on Target Type)
 *    u32 Size, in bytes
 *    u32 Activate? 1-->activate;
 *                            0-->install but do not activate
 * Response format:
 *    u32 PatchID
 */

#define BMI_ROMPATCH_UNINSTALL             10
/*
 * Semantics: Uninstall a previously-installed ROM Patch,
 * automatically deactivating, if necessary.
 * Request format:
 *    u32 command (BMI_ROMPATCH_UNINSTALL)
 *    u32 PatchID
 *
 * Response format: none
 */

#define BMI_ROMPATCH_ACTIVATE              11
/*
 * Semantics: Activate a list of previously-installed ROM Patches.
 * Request format:
 *    u32 command (BMI_ROMPATCH_ACTIVATE)
 *    u32 rompatch_count
 *    u32 PatchID[rompatch_count]
 *
 * Response format: none
 */

#define BMI_ROMPATCH_DEACTIVATE            12
/*
 * Semantics: Deactivate a list of active ROM Patches.
 * Request format:
 *    u32 command (BMI_ROMPATCH_DEACTIVATE)
 *    u32 rompatch_count
 *    u32 PatchID[rompatch_count]
 *
 * Response format: none
 */


#define BMI_LZ_STREAM_START                13
/*
 * Semantics: Begin an LZ-compressed stream of input
 * which is to be uncompressed by the Target to an
 * output buffer at address.  The output buffer must
 * be sufficiently large to hold the uncompressed
 * output from the compressed input stream.  This BMI
 * command should be followed by a series of 1 or more
 * BMI_LZ_DATA commands.
 *    u32 command (BMI_LZ_STREAM_START)
 *    u32 address
 * Note: Not supported on all versions of ROM firmware.
 */

#define BMI_LZ_DATA                        14
/*
 * Semantics: Host writes ATH6KL memory with LZ-compressed
 * data which is uncompressed by the Target.  This command
 * must be preceded by a BMI_LZ_STREAM_START command. A series
 * of BMI_LZ_DATA commands are considered part of a single
 * input stream until another BMI_LZ_STREAM_START is issued.
 * Request format:
 *    u32 command (BMI_LZ_DATA)
 *    u32 length (of compressed data),
 *                  at most BMI_DATASZ_MAX
 *    u8 CompressedData[length]
 * Response format: none
 * Note: Not supported on all versions of ROM firmware.
 */

#define BMI_COMMUNICATION_TIMEOUT       1000 /* in msec */

struct ath6kl;
struct ath6kl_bmi_target_info {
	__le32 byte_count;   /* size of this structure */
	__le32 version;      /* target version id */
	__le32 type;         /* target type */
} __packed;

int ath6kl_bmi_init(struct ath6kl *ar);
void ath6kl_bmi_cleanup(struct ath6kl *ar);
void ath6kl_bmi_reset(struct ath6kl *ar);

int ath6kl_bmi_done(struct ath6kl *ar);
int ath6kl_bmi_get_target_info(struct ath6kl *ar,
			       struct ath6kl_bmi_target_info *targ_info);
int ath6kl_bmi_read(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
int ath6kl_bmi_write(struct ath6kl *ar, u32 addr, u8 *buf, u32 len);
int ath6kl_bmi_execute(struct ath6kl *ar,
		       u32 addr, u32 *param);
int ath6kl_bmi_set_app_start(struct ath6kl *ar,
			     u32 addr);
int ath6kl_bmi_reg_read(struct ath6kl *ar, u32 addr, u32 *param);
int ath6kl_bmi_reg_write(struct ath6kl *ar, u32 addr, u32 param);
int ath6kl_bmi_lz_data(struct ath6kl *ar,
		       u8 *buf, u32 len);
int ath6kl_bmi_lz_stream_start(struct ath6kl *ar,
			       u32 addr);
int ath6kl_bmi_fast_download(struct ath6kl *ar,
			     u32 addr, u8 *buf, u32 len);
#endif