1/* $NetBSD: dtvvar.h,v 1.5 2011/07/16 12:20:01 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