1/* $NetBSD: dtvvar.h,v 1.6 2011/08/09 01:42:24 jmcneill Exp $ */
2
3/*-
4 * Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Jared D. McNeill.
18 * 4. Neither the name of The NetBSD Foundation nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _DEV_DTV_DTVVAR_H
36#define _DEV_DTV_DTVVAR_H
37
38#include <dev/dtv/dtvif.h>
39#include <dev/dtv/dtv_scatter.h>
40
41#define DTV_DEFAULT_BLOCKSIZE (32 * PAGE_SIZE)
42#define DTV_DEFAULT_BUFSIZE (32 * DTV_DEFAULT_BLOCKSIZE)
43
44#define TS_PKTLEN 188
45#define TS_HAS_SYNC(_tspkt) ((_tspkt)[0] == 0x47)
46#define TS_HAS_PUSI(_tspkt) ((_tspkt)[1] & 0x40)
47#define TS_HAS_AF(_tspkt) ((_tspkt)[3] & 0x20)
48#define TS_HAS_PAYLOAD(_tspkt) ((_tspkt)[3] & 0x10)
49#define TS_PID(_tspkt) ((((_tspkt)[1] & 0x1f) << 8) | (_tspkt)[2])
50#define TS_SECTION_MAXLEN 4096
51
52struct dtv_buffer {
53 uint32_t db_offset;
54 uint32_t db_bytesused;
55 size_t db_length;
56 SIMPLEQ_ENTRY(dtv_buffer) db_entries;
57};
58
59SIMPLEQ_HEAD(dtv_sample_queue, dtv_buffer);
60
61struct dtv_stream {
62 unsigned int ds_nbufs;
63 struct dtv_buffer **ds_buf;
64 struct dtv_scatter_buf ds_data;
65 struct dtv_sample_queue ds_ingress, ds_egress;
66 kmutex_t ds_ingress_lock, ds_egress_lock;
67 kcondvar_t ds_sample_cv;
68 struct selinfo ds_sel;
69 uint32_t ds_bytesread;
70};
71
72typedef enum {
73 DTV_DEMUX_MODE_NONE,
74 DTV_DEMUX_MODE_SECTION,
75 DTV_DEMUX_MODE_PES,
76} dtv_demux_mode_t;
77
78struct dtv_ts_section {
79 uint8_t sec_buf[TS_SECTION_MAXLEN];
80 uint16_t sec_bytesused;
81 uint16_t sec_length;
82};
83
84struct dtv_demux {
85 struct dtv_softc *dd_sc;
86 struct selinfo dd_sel;
87 kmutex_t dd_lock;
88 kcondvar_t dd_section_cv;
89
90 bool dd_running;
91
92 dtv_demux_mode_t dd_mode;
93 struct {
94 struct dmx_sct_filter_params params;
95 struct dtv_ts_section section[16];
96 unsigned int rp, wp;
97 unsigned int nsections;
98 bool overflow;
99 } dd_secfilt;
100
101 TAILQ_ENTRY(dtv_demux) dd_entries;
102};
103
104struct dtv_ts {
105 uint8_t ts_pidfilter[0x2000];
106 kmutex_t ts_lock;
107};
108
109struct dtv_softc {
110 device_t sc_dev;
111 const struct dtv_hw_if *sc_hw;
112 void *sc_priv;
113
114 bool sc_dying;
115
116 unsigned int sc_open;
117 kmutex_t sc_lock;
118
119 size_t sc_bufsize;
120 bool sc_bufsize_chg;
121
122 struct dtv_stream sc_stream;
123 struct dtv_ts sc_ts;
124
125 TAILQ_HEAD(, dtv_demux) sc_demux_list;
126 kmutex_t sc_demux_lock;
127 int sc_demux_runcnt;
128};
129
130#define dtv_device_get_devinfo(sc, info) \
131 ((sc)->sc_hw->get_devinfo((sc)->sc_priv, (info)))
132#define dtv_device_open(sc, flags) \
133 ((sc)->sc_hw->open((sc)->sc_priv, (flags)))
134#define dtv_device_close(sc) \
135 ((sc)->sc_hw->close((sc)->sc_priv))
136#define dtv_device_set_tuner(sc, params) \
137 ((sc)->sc_hw->set_tuner((sc)->sc_priv, (params)))
138#define dtv_device_get_status(sc) \
139 ((sc)->sc_hw->get_status((sc)->sc_priv))
140#define dtv_device_get_signal_strength(sc) \
141 ((sc)->sc_hw->get_signal_strength((sc)->sc_priv))
142#define dtv_device_get_snr(sc) \
143 ((sc)->sc_hw->get_snr((sc)->sc_priv))
144#define dtv_device_start_transfer(sc) \
145 ((sc)->sc_hw->start_transfer((sc)->sc_priv, dtv_buffer_submit, (sc)))
146#define dtv_device_stop_transfer(sc) \
147 ((sc)->sc_hw->stop_transfer((sc)->sc_priv))
148
149int dtv_frontend_ioctl(struct dtv_softc *, u_long, void *, int);
150
151int dtv_demux_open(struct dtv_softc *, int, int, lwp_t *);
152void dtv_demux_write(struct dtv_softc *, const uint8_t *, size_t);
153
154int dtv_buffer_realloc(struct dtv_softc *, size_t);
155int dtv_buffer_setup(struct dtv_softc *);
156int dtv_buffer_destroy(struct dtv_softc *);
157int dtv_buffer_read(struct dtv_softc *, struct uio *, int);
158int dtv_buffer_poll(struct dtv_softc *, int, lwp_t *);
159void dtv_buffer_submit(void *, const struct dtv_payload *);
160
161void dtv_common_close(struct dtv_softc *);
162
163#endif /* !_DEV_DTV_DTVVAR_H */
164