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
247
248
249
250
251
252
253
254
255
256
|
/*****************************************************************************/
/*
* hfmodem.h -- Linux soundcard HF FSK driver.
*
* Copyright (C) 1997 Thomas Sailer (sailer@ife.ee.ethz.ch)
* Swiss Federal Institute of Technology (ETH), Electronics Lab
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* This is the Linux realtime sound output driver
*/
/*****************************************************************************/
#ifndef _HFMODEM_H
#define _HFMODEM_H
/* --------------------------------------------------------------------- */
#include <linux/version.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/fs.h>
#if LINUX_VERSION_CODE >= 0x20100
#include <linux/poll.h>
#endif
/* --------------------------------------------------------------------- */
#define HFMODEM_MINOR 145
#define HFMODEM_SRATE 8000
#define HFMODEM_MAXBITS 4800 /* required for GTOR 300 baud mode */
#define HFMODEM_MINBAUD 40
#define HFMODEM_MAXBAUD 400
#define HFMODEM_MAXCORRLEN ((HFMODEM_SRATE+HFMODEM_MINBAUD-1)/HFMODEM_MINBAUD)
/* --------------------------------------------------------------------- */
typedef unsigned long hfmodem_time_t;
typedef int hfmodem_soft_t;
typedef unsigned long hfmodem_id_t;
/* --------------------------------------------------------------------- */
struct hfmodem_ioctl_fsk_tx_request {
hfmodem_time_t tstart;
hfmodem_time_t tinc;
int inv;
hfmodem_id_t id;
unsigned int nbits;
unsigned char *data;
unsigned int freq[2];
};
struct hfmodem_ioctl_fsk_rx_request {
hfmodem_time_t tstart;
hfmodem_time_t tinc;
unsigned int baud;
hfmodem_id_t id;
unsigned int nbits;
hfmodem_soft_t *data;
unsigned int freq[2];
};
struct hfmodem_ioctl_mixer_params {
int src;
int igain;
int ogain;
};
struct hfmodem_ioctl_sample_params {
__s16 *data;
int len;
};
#define HFMODEM_IOCTL_FSKTXREQUEST _IOW('H', 0, struct hfmodem_ioctl_fsk_tx_request)
#define HFMODEM_IOCTL_FSKRXREQUEST _IOW('H', 1, struct hfmodem_ioctl_fsk_rx_request)
#define HFMODEM_IOCTL_CLEARRQ _IO('H', 3)
#define HFMODEM_IOCTL_GETCURTIME _IOR('H', 4, hfmodem_time_t)
#define HFMODEM_IOCTL_WAITRQ _IOR('H', 5, hfmodem_id_t)
#define HFMODEM_IOCTL_MIXERPARAMS _IOW('H', 6, struct hfmodem_ioctl_mixer_params)
#define HFMODEM_IOCTL_SAMPLESTART _IOW('H', 7, struct hfmodem_ioctl_sample_params)
#define HFMODEM_IOCTL_SAMPLEFINISHED _IO('H', 8)
/* --------------------------------------------------------------------- */
#ifdef __KERNEL__
#include <linux/parport.h>
#define DMA_MODE_AUTOINIT 0x10
#define NR_DEVICE 1
#define HFMODEM_FRAGSAMPLES (HFMODEM_SRATE/100)
#define HFMODEM_FRAGSIZE (HFMODEM_FRAGSAMPLES*2)
#define HFMODEM_NUMFRAGS 8
#define HFMODEM_EXCESSFRAGS 3
#define HFMODEM_NUMRXSLOTS 20
#define HFMODEM_NUMTXSLOTS 4
#define HFMODEM_CORRELATOR_CACHE 8
enum slot_st { ss_unused = 0, ss_ready, ss_oper, ss_retired };
typedef int hfmodem_conv_t;
struct hfmodem_state {
const struct hfmodem_scops *scops;
/* io params */
struct {
unsigned int base_addr;
unsigned int dma;
unsigned int irq;
} io;
struct {
unsigned int seriobase;
unsigned int pariobase;
unsigned int midiiobase;
unsigned int flags;
struct pardevice *pardev;
} ptt_out;
struct {
__s16 *buf;
unsigned int lastfrag;
unsigned int fragptr;
unsigned int last_dmaptr;
int ptt_frames;
} dma;
struct {
unsigned int last_tvusec;
unsigned long long time_cnt;
hfmodem_time_t lasttime;
#ifdef __i386__
unsigned int starttime_lo, starttime_hi;
#endif /* __i386__ */
} clk;
int active;
struct wait_queue *wait;
struct {
__s16 *kbuf;
__s16 *ubuf;
__s16 *kptr;
unsigned int size;
int rem;
} sbuf;
struct {
hfmodem_time_t last_time;
unsigned int tx_phase;
struct hfmodem_l1_rxslot {
enum slot_st state;
hfmodem_time_t tstart, tinc;
hfmodem_soft_t *data;
hfmodem_soft_t *userdata;
unsigned int nbits;
unsigned int cntbits;
hfmodem_id_t id;
unsigned int corrlen;
hfmodem_conv_t scale;
unsigned int corr_cache;
} rxslots[HFMODEM_NUMRXSLOTS];
struct hfmodem_l1_txslot {
enum slot_st state;
hfmodem_time_t tstart, tinc;
unsigned char *data;
unsigned int nbits;
unsigned int cntbits;
hfmodem_id_t id;
unsigned char inv;
unsigned int phinc;
unsigned int phase_incs[2];
} txslots[HFMODEM_NUMTXSLOTS];
} l1;
};
struct hfmodem_correlator_cache {
int refcnt;
int lru;
unsigned short phase_incs[2];
hfmodem_conv_t correlator[2][2][HFMODEM_MAXCORRLEN];
};
struct hfmodem_scops {
unsigned int extent;
void (*init)(struct hfmodem_state *dev);
void (*prepare_input)(struct hfmodem_state *dev);
void (*trigger_input)(struct hfmodem_state *dev);
void (*prepare_output)(struct hfmodem_state *dev);
void (*trigger_output)(struct hfmodem_state *dev);
void (*stop)(struct hfmodem_state *dev);
unsigned int (*intack)(struct hfmodem_state *dev);
void (*mixer)(struct hfmodem_state *dev, int src, int igain, int ogain);
};
/* --------------------------------------------------------------------- */
extern int hfmodem_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
#if LINUX_VERSION_CODE >= 0x20100
extern unsigned int hfmodem_poll(struct file *file, poll_table *wait);
#else
extern int hfmodem_select(struct inode *inode, struct file *file, int sel_type, select_table *wait);
#endif
extern void hfmodem_clear_rq(struct hfmodem_state *dev);
extern void hfmodem_input_samples(struct hfmodem_state *dev, hfmodem_time_t tstart,
hfmodem_time_t tinc, __s16 *samples);
extern int hfmodem_output_samples(struct hfmodem_state *dev, hfmodem_time_t tstart,
hfmodem_time_t tinc, __s16 *samples);
extern long hfmodem_next_tx_event(struct hfmodem_state *dev, hfmodem_time_t curr);
extern void hfmodem_finish_pending_rx_requests(struct hfmodem_state *dev);
extern void hfmodem_wakeup(struct hfmodem_state *dev);
extern int hfmodem_sbcprobe(struct hfmodem_state *dev);
extern int hfmodem_wssprobe(struct hfmodem_state *dev);
extern void hfmodem_refclock_probe(void);
extern void hfmodem_refclock_init(struct hfmodem_state *dev);
extern hfmodem_time_t hfmodem_refclock_current(struct hfmodem_state *dev, hfmodem_time_t expected, int exp_valid);
/* --------------------------------------------------------------------- */
extern const char hfmodem_drvname[];
extern const char hfmodem_drvinfo[];
extern struct hfmodem_state hfmodem_state[NR_DEVICE];
extern struct hfmodem_correlator_cache hfmodem_correlator_cache[HFMODEM_CORRELATOR_CACHE];
/* --------------------------------------------------------------------- */
#endif /* __KERNEL__ */
/* --------------------------------------------------------------------- */
#endif /* _HFMODEM_H */
|
