diff options
Diffstat (limited to 'drivers/media/dvb/ngene/ngene-dvb.c')
-rw-r--r-- | drivers/media/dvb/ngene/ngene-dvb.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/drivers/media/dvb/ngene/ngene-dvb.c b/drivers/media/dvb/ngene/ngene-dvb.c new file mode 100644 index 00000000000..fcb16a615aa --- /dev/null +++ b/drivers/media/dvb/ngene/ngene-dvb.c | |||
@@ -0,0 +1,261 @@ | |||
1 | /* | ||
2 | * ngene-dvb.c: nGene PCIe bridge driver - DVB functions | ||
3 | * | ||
4 | * Copyright (C) 2005-2007 Micronas | ||
5 | * | ||
6 | * Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de> | ||
7 | * Modifications for new nGene firmware, | ||
8 | * support for EEPROM-copying, | ||
9 | * support for new dual DVB-S2 card prototype | ||
10 | * | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * version 2 only, as published by the Free Software Foundation. | ||
15 | * | ||
16 | * | ||
17 | * This program is distributed in the hope that it will be useful, | ||
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
20 | * GNU General Public License for more details. | ||
21 | * | ||
22 | * | ||
23 | * You should have received a copy of the GNU General Public License | ||
24 | * along with this program; if not, write to the Free Software | ||
25 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
26 | * 02110-1301, USA | ||
27 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | ||
28 | */ | ||
29 | |||
30 | #include <linux/module.h> | ||
31 | #include <linux/init.h> | ||
32 | #include <linux/delay.h> | ||
33 | #include <linux/slab.h> | ||
34 | #include <linux/poll.h> | ||
35 | #include <linux/io.h> | ||
36 | #include <asm/div64.h> | ||
37 | #include <linux/pci.h> | ||
38 | #include <linux/timer.h> | ||
39 | #include <linux/byteorder/generic.h> | ||
40 | #include <linux/firmware.h> | ||
41 | #include <linux/vmalloc.h> | ||
42 | |||
43 | #include "ngene.h" | ||
44 | |||
45 | |||
46 | /****************************************************************************/ | ||
47 | /* COMMAND API interface ****************************************************/ | ||
48 | /****************************************************************************/ | ||
49 | |||
50 | static ssize_t ts_write(struct file *file, const char *buf, | ||
51 | size_t count, loff_t *ppos) | ||
52 | { | ||
53 | struct dvb_device *dvbdev = file->private_data; | ||
54 | struct ngene_channel *chan = dvbdev->priv; | ||
55 | struct ngene *dev = chan->dev; | ||
56 | |||
57 | if (wait_event_interruptible(dev->tsout_rbuf.queue, | ||
58 | dvb_ringbuffer_free | ||
59 | (&dev->tsout_rbuf) >= count) < 0) | ||
60 | return 0; | ||
61 | |||
62 | dvb_ringbuffer_write(&dev->tsout_rbuf, buf, count); | ||
63 | |||
64 | return count; | ||
65 | } | ||
66 | |||
67 | static ssize_t ts_read(struct file *file, char *buf, | ||
68 | size_t count, loff_t *ppos) | ||
69 | { | ||
70 | struct dvb_device *dvbdev = file->private_data; | ||
71 | struct ngene_channel *chan = dvbdev->priv; | ||
72 | struct ngene *dev = chan->dev; | ||
73 | int left, avail; | ||
74 | |||
75 | left = count; | ||
76 | while (left) { | ||
77 | if (wait_event_interruptible( | ||
78 | dev->tsin_rbuf.queue, | ||
79 | dvb_ringbuffer_avail(&dev->tsin_rbuf) > 0) < 0) | ||
80 | return -EAGAIN; | ||
81 | avail = dvb_ringbuffer_avail(&dev->tsin_rbuf); | ||
82 | if (avail > left) | ||
83 | avail = left; | ||
84 | dvb_ringbuffer_read_user(&dev->tsin_rbuf, buf, avail); | ||
85 | left -= avail; | ||
86 | buf += avail; | ||
87 | } | ||
88 | return count; | ||
89 | } | ||
90 | |||
91 | static const struct file_operations ci_fops = { | ||
92 | .owner = THIS_MODULE, | ||
93 | .read = ts_read, | ||
94 | .write = ts_write, | ||
95 | .open = dvb_generic_open, | ||
96 | .release = dvb_generic_release, | ||
97 | }; | ||
98 | |||
99 | struct dvb_device ngene_dvbdev_ci = { | ||
100 | .priv = 0, | ||
101 | .readers = -1, | ||
102 | .writers = -1, | ||
103 | .users = -1, | ||
104 | .fops = &ci_fops, | ||
105 | }; | ||
106 | |||
107 | |||
108 | /****************************************************************************/ | ||
109 | /* DVB functions and API interface ******************************************/ | ||
110 | /****************************************************************************/ | ||
111 | |||
112 | static void swap_buffer(u32 *p, u32 len) | ||
113 | { | ||
114 | while (len) { | ||
115 | *p = swab32(*p); | ||
116 | p++; | ||
117 | len -= 4; | ||
118 | } | ||
119 | } | ||
120 | |||
121 | /* start of filler packet */ | ||
122 | static u8 fill_ts[] = { 0x47, 0x1f, 0xff, 0x10, TS_FILLER }; | ||
123 | |||
124 | /* #define DEBUG_CI_XFER */ | ||
125 | #ifdef DEBUG_CI_XFER | ||
126 | static u32 ok; | ||
127 | static u32 overflow; | ||
128 | static u32 stripped; | ||
129 | #endif | ||
130 | |||
131 | void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) | ||
132 | { | ||
133 | struct ngene_channel *chan = priv; | ||
134 | struct ngene *dev = chan->dev; | ||
135 | |||
136 | |||
137 | if (flags & DF_SWAP32) | ||
138 | swap_buffer(buf, len); | ||
139 | |||
140 | if (dev->ci.en && chan->number == 2) { | ||
141 | while (len >= 188) { | ||
142 | if (memcmp(buf, fill_ts, sizeof fill_ts) != 0) { | ||
143 | if (dvb_ringbuffer_free(&dev->tsin_rbuf) >= 188) { | ||
144 | dvb_ringbuffer_write(&dev->tsin_rbuf, buf, 188); | ||
145 | wake_up(&dev->tsin_rbuf.queue); | ||
146 | #ifdef DEBUG_CI_XFER | ||
147 | ok++; | ||
148 | #endif | ||
149 | } | ||
150 | #ifdef DEBUG_CI_XFER | ||
151 | else | ||
152 | overflow++; | ||
153 | #endif | ||
154 | } | ||
155 | #ifdef DEBUG_CI_XFER | ||
156 | else | ||
157 | stripped++; | ||
158 | |||
159 | if (ok % 100 == 0 && overflow) | ||
160 | printk(KERN_WARNING "%s: ok %u overflow %u dropped %u\n", __func__, ok, overflow, stripped); | ||
161 | #endif | ||
162 | buf += 188; | ||
163 | len -= 188; | ||
164 | } | ||
165 | return NULL; | ||
166 | } | ||
167 | |||
168 | if (chan->users > 0) | ||
169 | dvb_dmx_swfilter(&chan->demux, buf, len); | ||
170 | |||
171 | return NULL; | ||
172 | } | ||
173 | |||
174 | void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) | ||
175 | { | ||
176 | struct ngene_channel *chan = priv; | ||
177 | struct ngene *dev = chan->dev; | ||
178 | u32 alen; | ||
179 | |||
180 | alen = dvb_ringbuffer_avail(&dev->tsout_rbuf); | ||
181 | alen -= alen % 188; | ||
182 | |||
183 | if (alen < len) | ||
184 | FillTSBuffer(buf + alen, len - alen, flags); | ||
185 | else | ||
186 | alen = len; | ||
187 | dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen); | ||
188 | if (flags & DF_SWAP32) | ||
189 | swap_buffer((u32 *)buf, alen); | ||
190 | wake_up_interruptible(&dev->tsout_rbuf.queue); | ||
191 | return buf; | ||
192 | } | ||
193 | |||
194 | |||
195 | |||
196 | int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed) | ||
197 | { | ||
198 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; | ||
199 | struct ngene_channel *chan = dvbdmx->priv; | ||
200 | |||
201 | if (chan->users == 0) { | ||
202 | if (!chan->dev->cmd_timeout_workaround || !chan->running) | ||
203 | set_transfer(chan, 1); | ||
204 | } | ||
205 | |||
206 | return ++chan->users; | ||
207 | } | ||
208 | |||
209 | int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed) | ||
210 | { | ||
211 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; | ||
212 | struct ngene_channel *chan = dvbdmx->priv; | ||
213 | |||
214 | if (--chan->users) | ||
215 | return chan->users; | ||
216 | |||
217 | if (!chan->dev->cmd_timeout_workaround) | ||
218 | set_transfer(chan, 0); | ||
219 | |||
220 | return 0; | ||
221 | } | ||
222 | |||
223 | int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id, | ||
224 | int (*start_feed)(struct dvb_demux_feed *), | ||
225 | int (*stop_feed)(struct dvb_demux_feed *), | ||
226 | void *priv) | ||
227 | { | ||
228 | dvbdemux->priv = priv; | ||
229 | |||
230 | dvbdemux->filternum = 256; | ||
231 | dvbdemux->feednum = 256; | ||
232 | dvbdemux->start_feed = start_feed; | ||
233 | dvbdemux->stop_feed = stop_feed; | ||
234 | dvbdemux->write_to_decoder = NULL; | ||
235 | dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | | ||
236 | DMX_SECTION_FILTERING | | ||
237 | DMX_MEMORY_BASED_FILTERING); | ||
238 | return dvb_dmx_init(dvbdemux); | ||
239 | } | ||
240 | |||
241 | int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev, | ||
242 | struct dvb_demux *dvbdemux, | ||
243 | struct dmx_frontend *hw_frontend, | ||
244 | struct dmx_frontend *mem_frontend, | ||
245 | struct dvb_adapter *dvb_adapter) | ||
246 | { | ||
247 | int ret; | ||
248 | |||
249 | dmxdev->filternum = 256; | ||
250 | dmxdev->demux = &dvbdemux->dmx; | ||
251 | dmxdev->capabilities = 0; | ||
252 | ret = dvb_dmxdev_init(dmxdev, dvb_adapter); | ||
253 | if (ret < 0) | ||
254 | return ret; | ||
255 | |||
256 | hw_frontend->source = DMX_FRONTEND_0; | ||
257 | dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend); | ||
258 | mem_frontend->source = DMX_MEMORY_FE; | ||
259 | dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend); | ||
260 | return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend); | ||
261 | } | ||