Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 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> |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 38 | #include <linux/timer.h> |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 39 | #include <linux/byteorder/generic.h> |
| 40 | #include <linux/firmware.h> |
| 41 | #include <linux/vmalloc.h> |
| 42 | |
| 43 | #include "ngene.h" |
| 44 | |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 45 | |
| 46 | /****************************************************************************/ |
| 47 | /* COMMAND API interface ****************************************************/ |
| 48 | /****************************************************************************/ |
| 49 | |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 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 | |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 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 | |
Oliver Endriss | 36e3fc8 | 2011-07-03 14:04:46 -0300 | [diff] [blame] | 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 | |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 131 | void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags) |
| 132 | { |
| 133 | struct ngene_channel *chan = priv; |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 134 | struct ngene *dev = chan->dev; |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 135 | |
| 136 | |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 137 | if (flags & DF_SWAP32) |
| 138 | swap_buffer(buf, len); |
Oliver Endriss | 36e3fc8 | 2011-07-03 14:04:46 -0300 | [diff] [blame] | 139 | |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 140 | if (dev->ci.en && chan->number == 2) { |
Oliver Endriss | 36e3fc8 | 2011-07-03 14:04:46 -0300 | [diff] [blame] | 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; |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 164 | } |
Oliver Endriss | 36e3fc8 | 2011-07-03 14:04:46 -0300 | [diff] [blame] | 165 | return NULL; |
Ralph Metzler | 0f0b270 | 2011-01-10 06:36:15 -0300 | [diff] [blame] | 166 | } |
Oliver Endriss | 36e3fc8 | 2011-07-03 14:04:46 -0300 | [diff] [blame] | 167 | |
Oliver Endriss | 9143a43 | 2011-07-03 13:56:28 -0300 | [diff] [blame] | 168 | if (chan->users > 0) |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 169 | dvb_dmx_swfilter(&chan->demux, buf, len); |
Oliver Endriss | 9143a43 | 2011-07-03 13:56:28 -0300 | [diff] [blame] | 170 | |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 171 | return NULL; |
| 172 | } |
| 173 | |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 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) { |
Oliver Endriss | 5a2a184 | 2010-05-16 06:07:07 -0300 | [diff] [blame] | 202 | if (!chan->dev->cmd_timeout_workaround || !chan->running) |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 203 | set_transfer(chan, 1); |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 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 | |
Oliver Endriss | 5a2a184 | 2010-05-16 06:07:07 -0300 | [diff] [blame] | 217 | if (!chan->dev->cmd_timeout_workaround) |
| 218 | set_transfer(chan, 0); |
Devin Heitmueller | 1899e97 | 2010-03-13 23:10:13 -0300 | [diff] [blame] | 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 | } |