Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * dmxdev.c - DVB demultiplexer device |
| 3 | * |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
| 5 | * for convergence integrated media GmbH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public License |
| 9 | * as published by the Free Software Foundation; either version 2.1 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 19 | #define pr_fmt(fmt) "dmxdev: " fmt |
| 20 | |
Alexey Dobriyan | a99bbaf | 2009-10-04 16:11:37 +0400 | [diff] [blame] | 21 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/spinlock.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/vmalloc.h> |
| 25 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/poll.h> |
| 27 | #include <linux/ioctl.h> |
| 28 | #include <linux/wait.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 29 | #include <linux/uaccess.h> |
Mauro Carvalho Chehab | fada193 | 2017-12-28 13:03:51 -0500 | [diff] [blame] | 30 | #include <media/dmxdev.h> |
| 31 | #include <media/dvb_vb2.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | static int debug; |
| 34 | |
| 35 | module_param(debug, int, 0644); |
| 36 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); |
| 37 | |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 38 | #define dprintk(fmt, arg...) do { \ |
| 39 | if (debug) \ |
| 40 | printk(KERN_DEBUG pr_fmt("%s: " fmt), \ |
| 41 | __func__, ##arg); \ |
| 42 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 44 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
| 45 | const u8 *src, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | { |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 47 | ssize_t free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | if (!len) |
| 50 | return 0; |
| 51 | if (!buf->data) |
| 52 | return 0; |
| 53 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 54 | free = dvb_ringbuffer_free(buf); |
| 55 | if (len > free) { |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 56 | dprintk("buffer overflow\n"); |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 57 | return -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | } |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 59 | |
| 60 | return dvb_ringbuffer_write(buf, src, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | } |
| 62 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 63 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 64 | int non_blocking, char __user *buf, |
| 65 | size_t count, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | { |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 67 | size_t todo; |
| 68 | ssize_t avail; |
| 69 | ssize_t ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
| 71 | if (!src->data) |
| 72 | return 0; |
| 73 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 74 | if (src->error) { |
| 75 | ret = src->error; |
| 76 | dvb_ringbuffer_flush(src); |
| 77 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | } |
| 79 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 80 | for (todo = count; todo > 0; todo -= ret) { |
| 81 | if (non_blocking && dvb_ringbuffer_empty(src)) { |
| 82 | ret = -EWOULDBLOCK; |
| 83 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | } |
| 85 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 86 | ret = wait_event_interruptible(src->queue, |
| 87 | !dvb_ringbuffer_empty(src) || |
| 88 | (src->error != 0)); |
| 89 | if (ret < 0) |
| 90 | break; |
| 91 | |
| 92 | if (src->error) { |
| 93 | ret = src->error; |
| 94 | dvb_ringbuffer_flush(src); |
| 95 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | } |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 97 | |
| 98 | avail = dvb_ringbuffer_avail(src); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 99 | if (avail > todo) |
| 100 | avail = todo; |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 101 | |
Al Viro | b0ba0e3 | 2008-06-22 14:20:29 -0300 | [diff] [blame] | 102 | ret = dvb_ringbuffer_read_user(src, buf, avail); |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 103 | if (ret < 0) |
| 104 | break; |
| 105 | |
| 106 | buf += ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 108 | |
| 109 | return (count - todo) ? (count - todo) : ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 112 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
| 114 | struct list_head *head, *pos; |
| 115 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 116 | head = demux->get_frontends(demux); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (!head) |
| 118 | return NULL; |
| 119 | list_for_each(pos, head) |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 120 | if (DMX_FE_ENTRY(pos)->source == type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | return DMX_FE_ENTRY(pos); |
| 122 | |
| 123 | return NULL; |
| 124 | } |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
| 127 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 128 | struct dvb_device *dvbdev = file->private_data; |
| 129 | struct dmxdev *dmxdev = dvbdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | struct dmx_frontend *front; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 131 | bool need_ringbuffer = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 133 | dprintk("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 135 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | return -ERESTARTSYS; |
| 137 | |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 138 | if (dmxdev->exit) { |
| 139 | mutex_unlock(&dmxdev->mutex); |
| 140 | return -ENODEV; |
| 141 | } |
| 142 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 143 | dmxdev->may_do_mmap = 0; |
| 144 | |
| 145 | /* |
| 146 | * The logic here is a little tricky due to the ifdef. |
| 147 | * |
| 148 | * The ringbuffer is used for both read and mmap. |
| 149 | * |
| 150 | * It is not needed, however, on two situations: |
| 151 | * - Write devices (access with O_WRONLY); |
| 152 | * - For duplex device nodes, opened with O_RDWR. |
| 153 | */ |
| 154 | |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 155 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) |
| 156 | need_ringbuffer = true; |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 157 | else if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 158 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 159 | #ifdef CONFIG_DVB_MMAP |
| 160 | dmxdev->may_do_mmap = 1; |
| 161 | need_ringbuffer = true; |
| 162 | #else |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 163 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | return -EOPNOTSUPP; |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 165 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | } |
| 168 | |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 169 | if (need_ringbuffer) { |
Trent Piepho | 5e85bd0 | 2006-03-30 15:53:32 -0300 | [diff] [blame] | 170 | void *mem; |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 171 | |
Trent Piepho | 5e85bd0 | 2006-03-30 15:53:32 -0300 | [diff] [blame] | 172 | if (!dvbdev->readers) { |
| 173 | mutex_unlock(&dmxdev->mutex); |
| 174 | return -EBUSY; |
| 175 | } |
| 176 | mem = vmalloc(DVR_BUFFER_SIZE); |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 177 | if (!mem) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 178 | mutex_unlock(&dmxdev->mutex); |
| 179 | return -ENOMEM; |
| 180 | } |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 181 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 182 | if (dmxdev->may_do_mmap) |
| 183 | dvb_vb2_init(&dmxdev->dvr_vb2_ctx, "dvr", |
| 184 | file->f_flags & O_NONBLOCK); |
Trent Piepho | 5e85bd0 | 2006-03-30 15:53:32 -0300 | [diff] [blame] | 185 | dvbdev->readers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 188 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
| 189 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | if (!dmxdev->demux->write) { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 192 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | return -EOPNOTSUPP; |
| 194 | } |
| 195 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 196 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | if (!front) { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 199 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | return -EINVAL; |
| 201 | } |
| 202 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
| 203 | dmxdev->demux->connect_frontend(dmxdev->demux, front); |
| 204 | } |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 205 | dvbdev->users++; |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 206 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static int dvb_dvr_release(struct inode *inode, struct file *file) |
| 211 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 212 | struct dvb_device *dvbdev = file->private_data; |
| 213 | struct dmxdev *dmxdev = dvbdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Simon Arlott | c278850 | 2007-03-10 06:21:25 -0300 | [diff] [blame] | 215 | mutex_lock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 217 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
| 219 | dmxdev->demux->connect_frontend(dmxdev->demux, |
| 220 | dmxdev->dvr_orig_fe); |
| 221 | } |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 222 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 223 | if (((file->f_flags & O_ACCMODE) == O_RDONLY) || |
| 224 | dmxdev->may_do_mmap) { |
| 225 | if (dmxdev->may_do_mmap) { |
| 226 | if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) |
| 227 | dvb_vb2_stream_off(&dmxdev->dvr_vb2_ctx); |
| 228 | dvb_vb2_release(&dmxdev->dvr_vb2_ctx); |
| 229 | } |
Trent Piepho | 5e85bd0 | 2006-03-30 15:53:32 -0300 | [diff] [blame] | 230 | dvbdev->readers++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | if (dmxdev->dvr_buffer.data) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 232 | void *mem = dmxdev->dvr_buffer.data; |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 233 | /*memory barrier*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | mb(); |
| 235 | spin_lock_irq(&dmxdev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 236 | dmxdev->dvr_buffer.data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | spin_unlock_irq(&dmxdev->lock); |
| 238 | vfree(mem); |
| 239 | } |
| 240 | } |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 241 | /* TODO */ |
| 242 | dvbdev->users--; |
Jiri Slaby | 1c488ea | 2010-07-18 15:34:18 -0300 | [diff] [blame] | 243 | if (dvbdev->users == 1 && dmxdev->exit == 1) { |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 244 | mutex_unlock(&dmxdev->mutex); |
| 245 | wake_up(&dvbdev->wait_queue); |
| 246 | } else |
| 247 | mutex_unlock(&dmxdev->mutex); |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 253 | size_t count, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 255 | struct dvb_device *dvbdev = file->private_data; |
| 256 | struct dmxdev *dmxdev = dvbdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | int ret; |
| 258 | |
| 259 | if (!dmxdev->demux->write) |
| 260 | return -EOPNOTSUPP; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 261 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | return -EINVAL; |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 263 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | return -ERESTARTSYS; |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 265 | |
| 266 | if (dmxdev->exit) { |
| 267 | mutex_unlock(&dmxdev->mutex); |
| 268 | return -ENODEV; |
| 269 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 270 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 271 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | return ret; |
| 273 | } |
| 274 | |
| 275 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 276 | loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 278 | struct dvb_device *dvbdev = file->private_data; |
| 279 | struct dmxdev *dmxdev = dvbdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Simon Arlott | eda9f75 | 2009-05-12 17:39:28 -0300 | [diff] [blame] | 281 | if (dmxdev->exit) |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 282 | return -ENODEV; |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 283 | |
Simon Arlott | eda9f75 | 2009-05-12 17:39:28 -0300 | [diff] [blame] | 284 | return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
| 285 | file->f_flags & O_NONBLOCK, |
| 286 | buf, count, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 289 | static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, |
| 290 | unsigned long size) |
| 291 | { |
| 292 | struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; |
| 293 | void *newmem; |
| 294 | void *oldmem; |
| 295 | |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 296 | dprintk("%s\n", __func__); |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 297 | |
| 298 | if (buf->size == size) |
| 299 | return 0; |
| 300 | if (!size) |
| 301 | return -EINVAL; |
| 302 | |
| 303 | newmem = vmalloc(size); |
| 304 | if (!newmem) |
| 305 | return -ENOMEM; |
| 306 | |
| 307 | oldmem = buf->data; |
| 308 | |
| 309 | spin_lock_irq(&dmxdev->lock); |
| 310 | buf->data = newmem; |
| 311 | buf->size = size; |
| 312 | |
| 313 | /* reset and not flush in case the buffer shrinks */ |
| 314 | dvb_ringbuffer_reset(buf); |
| 315 | spin_unlock_irq(&dmxdev->lock); |
| 316 | |
| 317 | vfree(oldmem); |
| 318 | |
| 319 | return 0; |
| 320 | } |
| 321 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 322 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
| 323 | *dmxdevfilter, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
| 325 | spin_lock_irq(&dmxdevfilter->dev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 326 | dmxdevfilter->state = state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
| 328 | } |
| 329 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 330 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
| 331 | unsigned long size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 333 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 334 | void *newmem; |
| 335 | void *oldmem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 337 | if (buf->size == size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | return 0; |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 339 | if (!size) |
| 340 | return -EINVAL; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 341 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | return -EBUSY; |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 343 | |
| 344 | newmem = vmalloc(size); |
| 345 | if (!newmem) |
| 346 | return -ENOMEM; |
| 347 | |
| 348 | oldmem = buf->data; |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | spin_lock_irq(&dmxdevfilter->dev->lock); |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 351 | buf->data = newmem; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 352 | buf->size = size; |
Andrea Odetti | 48c01a9 | 2008-04-20 18:37:45 -0300 | [diff] [blame] | 353 | |
| 354 | /* reset and not flush in case the buffer shrinks */ |
| 355 | dvb_ringbuffer_reset(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 358 | vfree(oldmem); |
| 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | return 0; |
| 361 | } |
| 362 | |
Kees Cook | e7e0e2c | 2017-10-16 19:10:47 -0400 | [diff] [blame] | 363 | static void dvb_dmxdev_filter_timeout(struct timer_list *t) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | { |
Kees Cook | e7e0e2c | 2017-10-16 19:10:47 -0400 | [diff] [blame] | 365 | struct dmxdev_filter *dmxdevfilter = from_timer(dmxdevfilter, t, timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 367 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | spin_lock_irq(&dmxdevfilter->dev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 369 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
| 371 | wake_up(&dmxdevfilter->buffer.queue); |
| 372 | } |
| 373 | |
| 374 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) |
| 375 | { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 376 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | del_timer(&dmxdevfilter->timer); |
| 379 | if (para->timeout) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 380 | dmxdevfilter->timer.expires = |
| 381 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | add_timer(&dmxdevfilter->timer); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 387 | const u8 *buffer2, size_t buffer2_len, |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 388 | struct dmx_section_filter *filter, |
| 389 | u32 *buffer_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 391 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | int ret; |
| 393 | |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 394 | if (!dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx) && |
| 395 | dmxdevfilter->buffer.error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | wake_up(&dmxdevfilter->buffer.queue); |
| 397 | return 0; |
| 398 | } |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 399 | spin_lock(&dmxdevfilter->dev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 400 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 401 | spin_unlock(&dmxdevfilter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | return 0; |
| 403 | } |
| 404 | del_timer(&dmxdevfilter->timer); |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 405 | dprintk("section callback %*ph\n", 6, buffer1); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 406 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) { |
| 407 | ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx, |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 408 | buffer1, buffer1_len, |
| 409 | buffer_flags); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 410 | if (ret == buffer1_len) |
| 411 | ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx, |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 412 | buffer2, buffer2_len, |
| 413 | buffer_flags); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 414 | } else { |
| 415 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, |
| 416 | buffer1, buffer1_len); |
| 417 | if (ret == buffer1_len) { |
| 418 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, |
| 419 | buffer2, buffer2_len); |
| 420 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
Soeren Moch | 414abbd | 2013-06-05 21:26:23 -0300 | [diff] [blame] | 422 | if (ret < 0) |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 423 | dmxdevfilter->buffer.error = ret; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 424 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
| 425 | dmxdevfilter->state = DMXDEV_STATE_DONE; |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 426 | spin_unlock(&dmxdevfilter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | wake_up(&dmxdevfilter->buffer.queue); |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 432 | const u8 *buffer2, size_t buffer2_len, |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 433 | struct dmx_ts_feed *feed, |
| 434 | u32 *buffer_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 436 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 437 | struct dvb_ringbuffer *buffer; |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 438 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 439 | struct dvb_vb2_ctx *ctx; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 440 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | int ret; |
| 442 | |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 443 | spin_lock(&dmxdevfilter->dev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 444 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 445 | spin_unlock(&dmxdevfilter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | return 0; |
| 447 | } |
| 448 | |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 449 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP || |
| 450 | dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 451 | buffer = &dmxdevfilter->buffer; |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 452 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 453 | ctx = &dmxdevfilter->vb2_ctx; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 454 | #endif |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 455 | } else { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 456 | buffer = &dmxdevfilter->dev->dvr_buffer; |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 457 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 458 | ctx = &dmxdevfilter->dev->dvr_vb2_ctx; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 459 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | } |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 461 | |
| 462 | if (dvb_vb2_is_streaming(ctx)) { |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 463 | ret = dvb_vb2_fill_buffer(ctx, buffer1, buffer1_len, |
| 464 | buffer_flags); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 465 | if (ret == buffer1_len) |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 466 | ret = dvb_vb2_fill_buffer(ctx, buffer2, buffer2_len, |
| 467 | buffer_flags); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 468 | } else { |
| 469 | if (buffer->error) { |
| 470 | spin_unlock(&dmxdevfilter->dev->lock); |
| 471 | wake_up(&buffer->queue); |
| 472 | return 0; |
| 473 | } |
| 474 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
| 475 | if (ret == buffer1_len) |
| 476 | ret = dvb_dmxdev_buffer_write(buffer, |
| 477 | buffer2, buffer2_len); |
| 478 | } |
Soeren Moch | 414abbd | 2013-06-05 21:26:23 -0300 | [diff] [blame] | 479 | if (ret < 0) |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 480 | buffer->error = ret; |
Mauro Carvalho Chehab | 2810016 | 2009-02-16 15:27:44 -0300 | [diff] [blame] | 481 | spin_unlock(&dmxdevfilter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | wake_up(&buffer->queue); |
| 483 | return 0; |
| 484 | } |
| 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | /* stop feed but only mark the specified filter as stopped (state set) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
| 488 | { |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 489 | struct dmxdev_feed *feed; |
| 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
| 492 | |
| 493 | switch (dmxdevfilter->type) { |
| 494 | case DMXDEV_TYPE_SEC: |
| 495 | del_timer(&dmxdevfilter->timer); |
| 496 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); |
| 497 | break; |
| 498 | case DMXDEV_TYPE_PES: |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 499 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) |
| 500 | feed->ts->stop_filtering(feed->ts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | break; |
| 502 | default: |
| 503 | return -EINVAL; |
| 504 | } |
| 505 | return 0; |
| 506 | } |
| 507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | /* start feed associated with the specified filter */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
| 510 | { |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 511 | struct dmxdev_feed *feed; |
| 512 | int ret; |
| 513 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 514 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
| 516 | switch (filter->type) { |
| 517 | case DMXDEV_TYPE_SEC: |
| 518 | return filter->feed.sec->start_filtering(filter->feed.sec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | case DMXDEV_TYPE_PES: |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 520 | list_for_each_entry(feed, &filter->feed.ts, next) { |
| 521 | ret = feed->ts->start_filtering(feed->ts); |
| 522 | if (ret < 0) { |
| 523 | dvb_dmxdev_feed_stop(filter); |
| 524 | return ret; |
| 525 | } |
| 526 | } |
| 527 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | default: |
| 529 | return -EINVAL; |
| 530 | } |
| 531 | |
| 532 | return 0; |
| 533 | } |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | /* restart section feed if it has filters left associated with it, |
| 536 | otherwise release the feed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
| 538 | { |
| 539 | int i; |
| 540 | struct dmxdev *dmxdev = filter->dev; |
| 541 | u16 pid = filter->params.sec.pid; |
| 542 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 543 | for (i = 0; i < dmxdev->filternum; i++) |
| 544 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
| 545 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
| 546 | dmxdev->filter[i].params.sec.pid == pid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
| 548 | return 0; |
| 549 | } |
| 550 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 551 | filter->dev->demux->release_section_feed(dmxdev->demux, |
| 552 | filter->feed.sec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) |
| 558 | { |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 559 | struct dmxdev_feed *feed; |
| 560 | struct dmx_demux *demux; |
| 561 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 562 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | return 0; |
| 564 | |
| 565 | switch (dmxdevfilter->type) { |
| 566 | case DMXDEV_TYPE_SEC: |
| 567 | if (!dmxdevfilter->feed.sec) |
| 568 | break; |
| 569 | dvb_dmxdev_feed_stop(dmxdevfilter); |
| 570 | if (dmxdevfilter->filter.sec) |
| 571 | dmxdevfilter->feed.sec-> |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 572 | release_filter(dmxdevfilter->feed.sec, |
| 573 | dmxdevfilter->filter.sec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | dvb_dmxdev_feed_restart(dmxdevfilter); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 575 | dmxdevfilter->feed.sec = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | break; |
| 577 | case DMXDEV_TYPE_PES: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | dvb_dmxdev_feed_stop(dmxdevfilter); |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 579 | demux = dmxdevfilter->dev->demux; |
| 580 | list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) { |
| 581 | demux->release_ts_feed(demux, feed->ts); |
| 582 | feed->ts = NULL; |
| 583 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | break; |
| 585 | default: |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 586 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | return 0; |
| 588 | return -EINVAL; |
| 589 | } |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 590 | |
| 591 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | return 0; |
| 593 | } |
| 594 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 595 | static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter) |
| 596 | { |
| 597 | struct dmxdev_feed *feed, *tmp; |
| 598 | |
| 599 | /* delete all PIDs */ |
| 600 | list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) { |
| 601 | list_del(&feed->next); |
| 602 | kfree(feed); |
| 603 | } |
| 604 | |
| 605 | BUG_ON(!list_empty(&dmxdevfilter->feed.ts)); |
| 606 | } |
| 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) |
| 609 | { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 610 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | return 0; |
| 612 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 613 | if (dmxdevfilter->type == DMXDEV_TYPE_PES) |
| 614 | dvb_dmxdev_delete_pids(dmxdevfilter); |
| 615 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 616 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
| 618 | return 0; |
| 619 | } |
| 620 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 621 | static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev, |
| 622 | struct dmxdev_filter *filter, |
| 623 | struct dmxdev_feed *feed) |
| 624 | { |
Jasmin Jessich | dde67d5 | 2018-04-28 03:45:51 -0400 | [diff] [blame] | 625 | ktime_t timeout = ktime_set(0, 0); |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 626 | struct dmx_pes_filter_params *para = &filter->params.pes; |
Mauro Carvalho Chehab | 3256b36 | 2017-09-01 06:09:14 -0400 | [diff] [blame] | 627 | enum dmx_output otype; |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 628 | int ret; |
| 629 | int ts_type; |
Mauro Carvalho Chehab | fde04ab | 2013-04-04 13:25:30 -0300 | [diff] [blame] | 630 | enum dmx_ts_pes ts_pes; |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 631 | struct dmx_ts_feed *tsfeed; |
| 632 | |
| 633 | feed->ts = NULL; |
| 634 | otype = para->output; |
| 635 | |
Mauro Carvalho Chehab | 9ae2ae3 | 2010-12-27 11:41:14 -0300 | [diff] [blame] | 636 | ts_pes = para->pes_type; |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 637 | |
| 638 | if (ts_pes < DMX_PES_OTHER) |
| 639 | ts_type = TS_DECODER; |
| 640 | else |
| 641 | ts_type = 0; |
| 642 | |
| 643 | if (otype == DMX_OUT_TS_TAP) |
| 644 | ts_type |= TS_PACKET; |
| 645 | else if (otype == DMX_OUT_TSDEMUX_TAP) |
| 646 | ts_type |= TS_PACKET | TS_DEMUX; |
| 647 | else if (otype == DMX_OUT_TAP) |
| 648 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; |
| 649 | |
| 650 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts, |
| 651 | dvb_dmxdev_ts_callback); |
| 652 | if (ret < 0) |
| 653 | return ret; |
| 654 | |
| 655 | tsfeed = feed->ts; |
| 656 | tsfeed->priv = filter; |
| 657 | |
Mauro Carvalho Chehab | dd79d27e | 2016-10-13 07:14:38 -0300 | [diff] [blame] | 658 | ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout); |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 659 | if (ret < 0) { |
| 660 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); |
| 661 | return ret; |
| 662 | } |
| 663 | |
| 664 | ret = tsfeed->start_filtering(tsfeed); |
| 665 | if (ret < 0) { |
| 666 | dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed); |
| 667 | return ret; |
| 668 | } |
| 669 | |
| 670 | return 0; |
| 671 | } |
| 672 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) |
| 674 | { |
| 675 | struct dmxdev *dmxdev = filter->dev; |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 676 | struct dmxdev_feed *feed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | void *mem; |
| 678 | int ret, i; |
| 679 | |
| 680 | if (filter->state < DMXDEV_STATE_SET) |
| 681 | return -EINVAL; |
| 682 | |
| 683 | if (filter->state >= DMXDEV_STATE_GO) |
| 684 | dvb_dmxdev_filter_stop(filter); |
| 685 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 686 | if (!filter->buffer.data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | mem = vmalloc(filter->buffer.size); |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 688 | if (!mem) |
| 689 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | spin_lock_irq(&filter->dev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 691 | filter->buffer.data = mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | spin_unlock_irq(&filter->dev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | } |
| 694 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 695 | dvb_ringbuffer_flush(&filter->buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
| 697 | switch (filter->type) { |
| 698 | case DMXDEV_TYPE_SEC: |
| 699 | { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 700 | struct dmx_sct_filter_params *para = &filter->params.sec; |
| 701 | struct dmx_section_filter **secfilter = &filter->filter.sec; |
| 702 | struct dmx_section_feed **secfeed = &filter->feed.sec; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 704 | *secfilter = NULL; |
| 705 | *secfeed = NULL; |
| 706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
| 708 | /* find active filter/feed with same PID */ |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 709 | for (i = 0; i < dmxdev->filternum; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
Andreas Oberritter | 09794a6 | 2006-03-10 15:21:28 -0300 | [diff] [blame] | 711 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
| 712 | dmxdev->filter[i].params.sec.pid == para->pid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | *secfeed = dmxdev->filter[i].feed.sec; |
| 714 | break; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | /* if no feed found, try to allocate new one */ |
| 719 | if (!*secfeed) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 720 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
| 721 | secfeed, |
| 722 | dvb_dmxdev_section_callback); |
Mauro Carvalho Chehab | 3d42c93 | 2021-06-09 14:43:16 +0200 | [diff] [blame] | 723 | if (!*secfeed) { |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 724 | pr_err("DVB (%s): could not alloc feed\n", |
Harvey Harrison | 46b4f7c | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 725 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | return ret; |
| 727 | } |
| 728 | |
Mauro Carvalho Chehab | dd79d27e | 2016-10-13 07:14:38 -0300 | [diff] [blame] | 729 | ret = (*secfeed)->set(*secfeed, para->pid, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 730 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); |
| 731 | if (ret < 0) { |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 732 | pr_err("DVB (%s): could not set feed\n", |
Harvey Harrison | 46b4f7c | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 733 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | dvb_dmxdev_feed_restart(filter); |
| 735 | return ret; |
| 736 | } |
| 737 | } else { |
| 738 | dvb_dmxdev_feed_stop(filter); |
| 739 | } |
| 740 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 741 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | if (ret < 0) { |
| 743 | dvb_dmxdev_feed_restart(filter); |
| 744 | filter->feed.sec->start_filtering(*secfeed); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 745 | dprintk("could not get filter\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | return ret; |
| 747 | } |
| 748 | |
| 749 | (*secfilter)->priv = filter; |
| 750 | |
| 751 | memcpy(&((*secfilter)->filter_value[3]), |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 752 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | memcpy(&(*secfilter)->filter_mask[3], |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 754 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | memcpy(&(*secfilter)->filter_mode[3], |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 756 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 758 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
| 759 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; |
| 760 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; |
| 761 | (*secfilter)->filter_mask[1] = 0; |
| 762 | (*secfilter)->filter_mask[2] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | filter->todo = 0; |
| 765 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 766 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | if (ret < 0) |
| 768 | return ret; |
| 769 | |
| 770 | dvb_dmxdev_filter_timer(filter); |
| 771 | break; |
| 772 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | case DMXDEV_TYPE_PES: |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 774 | list_for_each_entry(feed, &filter->feed.ts, next) { |
| 775 | ret = dvb_dmxdev_start_feed(dmxdev, filter, feed); |
| 776 | if (ret < 0) { |
| 777 | dvb_dmxdev_filter_stop(filter); |
| 778 | return ret; |
| 779 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | default: |
| 783 | return -EINVAL; |
| 784 | } |
| 785 | |
| 786 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
| 787 | return 0; |
| 788 | } |
| 789 | |
| 790 | static int dvb_demux_open(struct inode *inode, struct file *file) |
| 791 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 792 | struct dvb_device *dvbdev = file->private_data; |
| 793 | struct dmxdev *dmxdev = dvbdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | int i; |
| 795 | struct dmxdev_filter *dmxdevfilter; |
| 796 | |
| 797 | if (!dmxdev->filter) |
| 798 | return -EINVAL; |
| 799 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 800 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | return -ERESTARTSYS; |
| 802 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 803 | for (i = 0; i < dmxdev->filternum; i++) |
| 804 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | break; |
| 806 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 807 | if (i == dmxdev->filternum) { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 808 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | return -EMFILE; |
| 810 | } |
| 811 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 812 | dmxdevfilter = &dmxdev->filter[i]; |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 813 | mutex_init(&dmxdevfilter->mutex); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 814 | file->private_data = dmxdevfilter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 816 | #ifdef CONFIG_DVB_MMAP |
| 817 | dmxdev->may_do_mmap = 1; |
| 818 | #else |
| 819 | dmxdev->may_do_mmap = 0; |
| 820 | #endif |
| 821 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 822 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 823 | dvb_vb2_init(&dmxdevfilter->vb2_ctx, "demux_filter", |
| 824 | file->f_flags & O_NONBLOCK); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 825 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
Kees Cook | e7e0e2c | 2017-10-16 19:10:47 -0400 | [diff] [blame] | 827 | timer_setup(&dmxdevfilter->timer, dvb_dmxdev_filter_timeout, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 829 | dvbdev->users++; |
| 830 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 831 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | return 0; |
| 833 | } |
| 834 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 835 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
| 836 | struct dmxdev_filter *dmxdevfilter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | { |
Simon Arlott | c278850 | 2007-03-10 06:21:25 -0300 | [diff] [blame] | 838 | mutex_lock(&dmxdev->mutex); |
| 839 | mutex_lock(&dmxdevfilter->mutex); |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 840 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) |
| 841 | dvb_vb2_stream_off(&dmxdevfilter->vb2_ctx); |
| 842 | dvb_vb2_release(&dmxdevfilter->vb2_ctx); |
| 843 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | |
| 845 | dvb_dmxdev_filter_stop(dmxdevfilter); |
| 846 | dvb_dmxdev_filter_reset(dmxdevfilter); |
| 847 | |
| 848 | if (dmxdevfilter->buffer.data) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 849 | void *mem = dmxdevfilter->buffer.data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
| 851 | spin_lock_irq(&dmxdev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 852 | dmxdevfilter->buffer.data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | spin_unlock_irq(&dmxdev->lock); |
| 854 | vfree(mem); |
| 855 | } |
| 856 | |
| 857 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); |
| 858 | wake_up(&dmxdevfilter->buffer.queue); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 859 | mutex_unlock(&dmxdevfilter->mutex); |
| 860 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | return 0; |
| 862 | } |
| 863 | |
Mauro Carvalho Chehab | 3256b36 | 2017-09-01 06:09:14 -0400 | [diff] [blame] | 864 | static inline void invert_mode(struct dmx_filter *filter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | { |
| 866 | int i; |
| 867 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 868 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
| 869 | filter->mode[i] ^= 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
| 871 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 872 | static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev, |
| 873 | struct dmxdev_filter *filter, u16 pid) |
| 874 | { |
| 875 | struct dmxdev_feed *feed; |
| 876 | |
| 877 | if ((filter->type != DMXDEV_TYPE_PES) || |
| 878 | (filter->state < DMXDEV_STATE_SET)) |
| 879 | return -EINVAL; |
| 880 | |
| 881 | /* only TS packet filters may have multiple PIDs */ |
| 882 | if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) && |
| 883 | (!list_empty(&filter->feed.ts))) |
| 884 | return -EINVAL; |
| 885 | |
| 886 | feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL); |
| 887 | if (feed == NULL) |
| 888 | return -ENOMEM; |
| 889 | |
| 890 | feed->pid = pid; |
| 891 | list_add(&feed->next, &filter->feed.ts); |
| 892 | |
| 893 | if (filter->state >= DMXDEV_STATE_GO) |
| 894 | return dvb_dmxdev_start_feed(dmxdev, filter, feed); |
| 895 | |
| 896 | return 0; |
| 897 | } |
| 898 | |
| 899 | static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev, |
| 900 | struct dmxdev_filter *filter, u16 pid) |
| 901 | { |
| 902 | struct dmxdev_feed *feed, *tmp; |
| 903 | |
| 904 | if ((filter->type != DMXDEV_TYPE_PES) || |
| 905 | (filter->state < DMXDEV_STATE_SET)) |
| 906 | return -EINVAL; |
| 907 | |
| 908 | list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) { |
| 909 | if ((feed->pid == pid) && (feed->ts != NULL)) { |
| 910 | feed->ts->stop_filtering(feed->ts); |
| 911 | filter->dev->demux->release_ts_feed(filter->dev->demux, |
| 912 | feed->ts); |
| 913 | list_del(&feed->next); |
| 914 | kfree(feed); |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | return 0; |
| 919 | } |
| 920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 922 | struct dmxdev_filter *dmxdevfilter, |
| 923 | struct dmx_sct_filter_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | { |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 925 | dprintk("%s: PID=0x%04x, flags=%02x, timeout=%d\n", |
Mauro Carvalho Chehab | 17e67d4 | 2013-03-01 15:20:25 -0300 | [diff] [blame] | 926 | __func__, params->pid, params->flags, params->timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
| 928 | dvb_dmxdev_filter_stop(dmxdevfilter); |
| 929 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 930 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | memcpy(&dmxdevfilter->params.sec, |
| 932 | params, sizeof(struct dmx_sct_filter_params)); |
| 933 | invert_mode(&dmxdevfilter->params.sec.filter); |
| 934 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
| 935 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 936 | if (params->flags & DMX_IMMEDIATE_START) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | return dvb_dmxdev_filter_start(dmxdevfilter); |
| 938 | |
| 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 943 | struct dmxdev_filter *dmxdevfilter, |
| 944 | struct dmx_pes_filter_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | { |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 946 | int ret; |
| 947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | dvb_dmxdev_filter_stop(dmxdevfilter); |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 949 | dvb_dmxdev_filter_reset(dmxdevfilter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 951 | if ((unsigned int)params->pes_type > DMX_PES_OTHER) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | return -EINVAL; |
| 953 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 954 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
| 955 | memcpy(&dmxdevfilter->params, params, |
| 956 | sizeof(struct dmx_pes_filter_params)); |
Francesco Lavra | 691c9ae | 2010-02-07 09:49:58 -0300 | [diff] [blame] | 957 | INIT_LIST_HEAD(&dmxdevfilter->feed.ts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
| 959 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); |
| 960 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 961 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, |
| 962 | dmxdevfilter->params.pes.pid); |
| 963 | if (ret < 0) |
| 964 | return ret; |
| 965 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 966 | if (params->flags & DMX_IMMEDIATE_START) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | return dvb_dmxdev_filter_start(dmxdevfilter); |
| 968 | |
| 969 | return 0; |
| 970 | } |
| 971 | |
| 972 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 973 | struct file *file, char __user *buf, |
| 974 | size_t count, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | { |
| 976 | int result, hcount; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 977 | int done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 979 | if (dfil->todo <= 0) { |
| 980 | hcount = 3 + dfil->todo; |
| 981 | if (hcount > count) |
| 982 | hcount = count; |
| 983 | result = dvb_dmxdev_buffer_read(&dfil->buffer, |
| 984 | file->f_flags & O_NONBLOCK, |
| 985 | buf, hcount, ppos); |
| 986 | if (result < 0) { |
| 987 | dfil->todo = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | return result; |
| 989 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 990 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | return -EFAULT; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 992 | buf += result; |
| 993 | done = result; |
| 994 | count -= result; |
| 995 | dfil->todo -= result; |
| 996 | if (dfil->todo > -3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | return done; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 998 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | if (!count) |
| 1000 | return done; |
| 1001 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1002 | if (count > dfil->todo) |
| 1003 | count = dfil->todo; |
| 1004 | result = dvb_dmxdev_buffer_read(&dfil->buffer, |
| 1005 | file->f_flags & O_NONBLOCK, |
| 1006 | buf, count, ppos); |
| 1007 | if (result < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | return result; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1009 | dfil->todo -= result; |
| 1010 | return (result + done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } |
| 1012 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | static ssize_t |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1014 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
| 1015 | loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1017 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
| 1018 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1020 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | return -ERESTARTSYS; |
| 1022 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1023 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
| 1024 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | else |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1026 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
| 1027 | file->f_flags & O_NONBLOCK, |
| 1028 | buf, count, ppos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1030 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | return ret; |
| 1032 | } |
| 1033 | |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1034 | static int dvb_demux_do_ioctl(struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | unsigned int cmd, void *parg) |
| 1036 | { |
Peter Beutner | 3ec4a30 | 2005-07-07 17:57:39 -0700 | [diff] [blame] | 1037 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1038 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
| 1039 | unsigned long arg = (unsigned long)parg; |
| 1040 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1042 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | return -ERESTARTSYS; |
| 1044 | |
| 1045 | switch (cmd) { |
| 1046 | case DMX_START: |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1047 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1048 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | return -ERESTARTSYS; |
| 1050 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1051 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | ret = -EINVAL; |
| 1053 | else |
| 1054 | ret = dvb_dmxdev_filter_start(dmxdevfilter); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1055 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | break; |
| 1057 | |
| 1058 | case DMX_STOP: |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1059 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1060 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | return -ERESTARTSYS; |
| 1062 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1063 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1064 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | break; |
| 1066 | |
| 1067 | case DMX_SET_FILTER: |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1068 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1069 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | return -ERESTARTSYS; |
| 1071 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1072 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1073 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | break; |
| 1075 | |
| 1076 | case DMX_SET_PES_FILTER: |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1077 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1078 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | return -ERESTARTSYS; |
| 1080 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1081 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1082 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | break; |
| 1084 | |
| 1085 | case DMX_SET_BUFFER_SIZE: |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1086 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1087 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | return -ERESTARTSYS; |
| 1089 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1090 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1091 | mutex_unlock(&dmxdevfilter->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | break; |
| 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | case DMX_GET_PES_PIDS: |
| 1095 | if (!dmxdev->demux->get_pes_pids) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1096 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | break; |
| 1098 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1099 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | break; |
| 1101 | |
| 1102 | case DMX_GET_STC: |
| 1103 | if (!dmxdev->demux->get_stc) { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1104 | ret = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | break; |
| 1106 | } |
| 1107 | ret = dmxdev->demux->get_stc(dmxdev->demux, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1108 | ((struct dmx_stc *)parg)->num, |
| 1109 | &((struct dmx_stc *)parg)->stc, |
| 1110 | &((struct dmx_stc *)parg)->base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | break; |
| 1112 | |
Andreas Oberritter | 1cb662a | 2009-07-14 20:28:50 -0300 | [diff] [blame] | 1113 | case DMX_ADD_PID: |
| 1114 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1115 | ret = -ERESTARTSYS; |
| 1116 | break; |
| 1117 | } |
| 1118 | ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg); |
| 1119 | mutex_unlock(&dmxdevfilter->mutex); |
| 1120 | break; |
| 1121 | |
| 1122 | case DMX_REMOVE_PID: |
| 1123 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1124 | ret = -ERESTARTSYS; |
| 1125 | break; |
| 1126 | } |
| 1127 | ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg); |
| 1128 | mutex_unlock(&dmxdevfilter->mutex); |
| 1129 | break; |
| 1130 | |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1131 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1132 | case DMX_REQBUFS: |
| 1133 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1134 | mutex_unlock(&dmxdev->mutex); |
| 1135 | return -ERESTARTSYS; |
| 1136 | } |
| 1137 | ret = dvb_vb2_reqbufs(&dmxdevfilter->vb2_ctx, parg); |
| 1138 | mutex_unlock(&dmxdevfilter->mutex); |
| 1139 | break; |
| 1140 | |
| 1141 | case DMX_QUERYBUF: |
| 1142 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1143 | mutex_unlock(&dmxdev->mutex); |
| 1144 | return -ERESTARTSYS; |
| 1145 | } |
| 1146 | ret = dvb_vb2_querybuf(&dmxdevfilter->vb2_ctx, parg); |
| 1147 | mutex_unlock(&dmxdevfilter->mutex); |
| 1148 | break; |
| 1149 | |
| 1150 | case DMX_EXPBUF: |
| 1151 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1152 | mutex_unlock(&dmxdev->mutex); |
| 1153 | return -ERESTARTSYS; |
| 1154 | } |
| 1155 | ret = dvb_vb2_expbuf(&dmxdevfilter->vb2_ctx, parg); |
| 1156 | mutex_unlock(&dmxdevfilter->mutex); |
| 1157 | break; |
| 1158 | |
| 1159 | case DMX_QBUF: |
| 1160 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1161 | mutex_unlock(&dmxdev->mutex); |
| 1162 | return -ERESTARTSYS; |
| 1163 | } |
| 1164 | ret = dvb_vb2_qbuf(&dmxdevfilter->vb2_ctx, parg); |
| 1165 | if (ret == 0 && !dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) |
| 1166 | ret = dvb_vb2_stream_on(&dmxdevfilter->vb2_ctx); |
| 1167 | mutex_unlock(&dmxdevfilter->mutex); |
| 1168 | break; |
| 1169 | |
| 1170 | case DMX_DQBUF: |
| 1171 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1172 | mutex_unlock(&dmxdev->mutex); |
| 1173 | return -ERESTARTSYS; |
| 1174 | } |
| 1175 | ret = dvb_vb2_dqbuf(&dmxdevfilter->vb2_ctx, parg); |
| 1176 | mutex_unlock(&dmxdevfilter->mutex); |
| 1177 | break; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1178 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | default: |
Mauro Carvalho Chehab | a145f64 | 2018-02-11 05:44:21 -0500 | [diff] [blame] | 1180 | ret = -ENOTTY; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1181 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | } |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1183 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | return ret; |
| 1185 | } |
| 1186 | |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1187 | static long dvb_demux_ioctl(struct file *file, unsigned int cmd, |
| 1188 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | { |
Arnd Bergmann | 72024f1 | 2010-09-11 19:56:45 +0200 | [diff] [blame] | 1190 | return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | } |
| 1192 | |
Al Viro | c23e0cb | 2017-07-03 03:02:56 -0400 | [diff] [blame] | 1193 | static __poll_t dvb_demux_poll(struct file *file, poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
Peter Beutner | 3ec4a30 | 2005-07-07 17:57:39 -0700 | [diff] [blame] | 1195 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
Al Viro | c23e0cb | 2017-07-03 03:02:56 -0400 | [diff] [blame] | 1196 | __poll_t mask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | |
Hans Verkuil | c6f5c7c | 2019-02-07 06:49:48 -0500 | [diff] [blame] | 1198 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); |
| 1199 | |
Mauro Carvalho Chehab | 313ddec | 2014-09-03 14:32:26 -0300 | [diff] [blame] | 1200 | if ((!dmxdevfilter) || dmxdevfilter->dev->exit) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1201 | return EPOLLERR; |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1202 | if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) |
| 1203 | return dvb_vb2_poll(&dmxdevfilter->vb2_ctx, file, wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | if (dmxdevfilter->state != DMXDEV_STATE_GO && |
| 1206 | dmxdevfilter->state != DMXDEV_STATE_DONE && |
| 1207 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) |
| 1208 | return 0; |
| 1209 | |
| 1210 | if (dmxdevfilter->buffer.error) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1211 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 1213 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1214 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | return mask; |
| 1217 | } |
| 1218 | |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1219 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1220 | static int dvb_demux_mmap(struct file *file, struct vm_area_struct *vma) |
| 1221 | { |
| 1222 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
| 1223 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
| 1224 | int ret; |
| 1225 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 1226 | if (!dmxdev->may_do_mmap) |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 1227 | return -ENOTTY; |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 1228 | |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1229 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
| 1230 | return -ERESTARTSYS; |
| 1231 | |
| 1232 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
| 1233 | mutex_unlock(&dmxdev->mutex); |
| 1234 | return -ERESTARTSYS; |
| 1235 | } |
| 1236 | ret = dvb_vb2_mmap(&dmxdevfilter->vb2_ctx, vma); |
| 1237 | |
| 1238 | mutex_unlock(&dmxdevfilter->mutex); |
| 1239 | mutex_unlock(&dmxdev->mutex); |
| 1240 | |
| 1241 | return ret; |
| 1242 | } |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1243 | #endif |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | static int dvb_demux_release(struct inode *inode, struct file *file) |
| 1246 | { |
Peter Beutner | 3ec4a30 | 2005-07-07 17:57:39 -0700 | [diff] [blame] | 1247 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1249 | int ret; |
| 1250 | |
| 1251 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); |
| 1252 | |
| 1253 | mutex_lock(&dmxdev->mutex); |
| 1254 | dmxdev->dvbdev->users--; |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 1255 | if (dmxdev->dvbdev->users == 1 && dmxdev->exit == 1) { |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1256 | mutex_unlock(&dmxdev->mutex); |
| 1257 | wake_up(&dmxdev->dvbdev->wait_queue); |
| 1258 | } else |
| 1259 | mutex_unlock(&dmxdev->mutex); |
| 1260 | |
| 1261 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | } |
| 1263 | |
Jan Engelhardt | 784e29d | 2009-01-11 06:12:43 -0300 | [diff] [blame] | 1264 | static const struct file_operations dvb_demux_fops = { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1265 | .owner = THIS_MODULE, |
| 1266 | .read = dvb_demux_read, |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1267 | .unlocked_ioctl = dvb_demux_ioctl, |
Arnd Bergmann | b5d3206 | 2018-08-27 15:56:22 -0400 | [diff] [blame] | 1268 | .compat_ioctl = dvb_demux_ioctl, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1269 | .open = dvb_demux_open, |
| 1270 | .release = dvb_demux_release, |
| 1271 | .poll = dvb_demux_poll, |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 1272 | .llseek = default_llseek, |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1273 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1274 | .mmap = dvb_demux_mmap, |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1275 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | }; |
| 1277 | |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1278 | static const struct dvb_device dvbdev_demux = { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1279 | .priv = NULL, |
| 1280 | .users = 1, |
| 1281 | .writers = 1, |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1282 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
Mauro Carvalho Chehab | e4fd3bc | 2015-02-18 12:09:27 -0300 | [diff] [blame] | 1283 | .name = "dvb-demux", |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1284 | #endif |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1285 | .fops = &dvb_demux_fops |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | }; |
| 1287 | |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1288 | static int dvb_dvr_do_ioctl(struct file *file, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1289 | unsigned int cmd, void *parg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 1291 | struct dvb_device *dvbdev = file->private_data; |
| 1292 | struct dmxdev *dmxdev = dvbdev->priv; |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 1293 | unsigned long arg = (unsigned long)parg; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1294 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1296 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | return -ERESTARTSYS; |
| 1298 | |
| 1299 | switch (cmd) { |
| 1300 | case DMX_SET_BUFFER_SIZE: |
Andrea Odetti | a095be4 | 2008-04-20 19:14:51 -0300 | [diff] [blame] | 1301 | ret = dvb_dvr_set_buffer_size(dmxdev, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | break; |
| 1303 | |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1304 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1305 | case DMX_REQBUFS: |
| 1306 | ret = dvb_vb2_reqbufs(&dmxdev->dvr_vb2_ctx, parg); |
| 1307 | break; |
| 1308 | |
| 1309 | case DMX_QUERYBUF: |
| 1310 | ret = dvb_vb2_querybuf(&dmxdev->dvr_vb2_ctx, parg); |
| 1311 | break; |
| 1312 | |
| 1313 | case DMX_EXPBUF: |
| 1314 | ret = dvb_vb2_expbuf(&dmxdev->dvr_vb2_ctx, parg); |
| 1315 | break; |
| 1316 | |
| 1317 | case DMX_QBUF: |
| 1318 | ret = dvb_vb2_qbuf(&dmxdev->dvr_vb2_ctx, parg); |
| 1319 | if (ret == 0 && !dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) |
| 1320 | ret = dvb_vb2_stream_on(&dmxdev->dvr_vb2_ctx); |
| 1321 | break; |
| 1322 | |
| 1323 | case DMX_DQBUF: |
| 1324 | ret = dvb_vb2_dqbuf(&dmxdev->dvr_vb2_ctx, parg); |
| 1325 | break; |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1326 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | default: |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 1328 | ret = -ENOTTY; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1329 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | } |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1331 | mutex_unlock(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | return ret; |
| 1333 | } |
| 1334 | |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1335 | static long dvb_dvr_ioctl(struct file *file, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1336 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | { |
Arnd Bergmann | 72024f1 | 2010-09-11 19:56:45 +0200 | [diff] [blame] | 1338 | return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
| 1340 | |
Al Viro | c23e0cb | 2017-07-03 03:02:56 -0400 | [diff] [blame] | 1341 | static __poll_t dvb_dvr_poll(struct file *file, poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | { |
Johannes Stezenbach | 0c53c70 | 2005-05-16 21:54:24 -0700 | [diff] [blame] | 1343 | struct dvb_device *dvbdev = file->private_data; |
| 1344 | struct dmxdev *dmxdev = dvbdev->priv; |
Al Viro | c23e0cb | 2017-07-03 03:02:56 -0400 | [diff] [blame] | 1345 | __poll_t mask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | |
Mauro Carvalho Chehab | b3ad24d | 2016-10-13 06:47:54 -0300 | [diff] [blame] | 1347 | dprintk("%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | |
Hans Verkuil | c6f5c7c | 2019-02-07 06:49:48 -0500 | [diff] [blame] | 1349 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); |
| 1350 | |
Changbing Xiong | d102cac | 2014-08-20 23:05:40 -0300 | [diff] [blame] | 1351 | if (dmxdev->exit) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1352 | return EPOLLERR; |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1353 | if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx)) |
| 1354 | return dvb_vb2_poll(&dmxdev->dvr_vb2_ctx, file, wait); |
Changbing Xiong | d102cac | 2014-08-20 23:05:40 -0300 | [diff] [blame] | 1355 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 1356 | if (((file->f_flags & O_ACCMODE) == O_RDONLY) || |
| 1357 | dmxdev->may_do_mmap) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | if (dmxdev->dvr_buffer.error) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1359 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 1361 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1362 | mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | } else |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 1364 | mask |= (EPOLLOUT | EPOLLWRNORM | EPOLLPRI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | |
| 1366 | return mask; |
| 1367 | } |
| 1368 | |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1369 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1370 | static int dvb_dvr_mmap(struct file *file, struct vm_area_struct *vma) |
| 1371 | { |
| 1372 | struct dvb_device *dvbdev = file->private_data; |
| 1373 | struct dmxdev *dmxdev = dvbdev->priv; |
| 1374 | int ret; |
| 1375 | |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 1376 | if (!dmxdev->may_do_mmap) |
Mauro Carvalho Chehab | fdbeb96 | 2018-02-09 07:30:46 -0500 | [diff] [blame] | 1377 | return -ENOTTY; |
Mauro Carvalho Chehab | 0b23498 | 2018-02-09 10:44:49 -0500 | [diff] [blame] | 1378 | |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1379 | if (dmxdev->exit) |
| 1380 | return -ENODEV; |
| 1381 | |
| 1382 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
| 1383 | return -ERESTARTSYS; |
| 1384 | |
| 1385 | ret = dvb_vb2_mmap(&dmxdev->dvr_vb2_ctx, vma); |
| 1386 | mutex_unlock(&dmxdev->mutex); |
| 1387 | return ret; |
| 1388 | } |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1389 | #endif |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1390 | |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 1391 | static const struct file_operations dvb_dvr_fops = { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1392 | .owner = THIS_MODULE, |
| 1393 | .read = dvb_dvr_read, |
| 1394 | .write = dvb_dvr_write, |
Arnd Bergmann | 16ef8de | 2010-04-27 00:24:00 +0200 | [diff] [blame] | 1395 | .unlocked_ioctl = dvb_dvr_ioctl, |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1396 | .open = dvb_dvr_open, |
| 1397 | .release = dvb_dvr_release, |
| 1398 | .poll = dvb_dvr_poll, |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 1399 | .llseek = default_llseek, |
Arnd Bergmann | ec5b100 | 2018-01-04 05:31:30 -0500 | [diff] [blame] | 1400 | #ifdef CONFIG_DVB_MMAP |
Satendra Singh Thakur | 57868acc | 2017-12-18 22:35:53 -0500 | [diff] [blame] | 1401 | .mmap = dvb_dvr_mmap, |
Mauro Carvalho Chehab | 4021053 | 2017-12-28 09:24:20 -0500 | [diff] [blame] | 1402 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | }; |
| 1404 | |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1405 | static const struct dvb_device dvbdev_dvr = { |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1406 | .priv = NULL, |
Trent Piepho | 5e85bd0 | 2006-03-30 15:53:32 -0300 | [diff] [blame] | 1407 | .readers = 1, |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1408 | .users = 1, |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1409 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
Mauro Carvalho Chehab | e4fd3bc | 2015-02-18 12:09:27 -0300 | [diff] [blame] | 1410 | .name = "dvb-dvr", |
Mauro Carvalho Chehab | 8afd52e | 2015-01-02 22:28:53 -0300 | [diff] [blame] | 1411 | #endif |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1412 | .fops = &dvb_dvr_fops |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | }; |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1414 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | { |
| 1416 | int i; |
| 1417 | |
| 1418 | if (dmxdev->demux->open(dmxdev->demux) < 0) |
| 1419 | return -EUSERS; |
| 1420 | |
Kees Cook | 42bc47b | 2018-06-12 14:27:11 -0700 | [diff] [blame] | 1421 | dmxdev->filter = vmalloc(array_size(sizeof(struct dmxdev_filter), |
| 1422 | dmxdev->filternum)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | if (!dmxdev->filter) |
| 1424 | return -ENOMEM; |
| 1425 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 1426 | mutex_init(&dmxdev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | spin_lock_init(&dmxdev->lock); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1428 | for (i = 0; i < dmxdev->filternum; i++) { |
| 1429 | dmxdev->filter[i].dev = dmxdev; |
| 1430 | dmxdev->filter[i].buffer.data = NULL; |
| 1431 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], |
| 1432 | DMXDEV_STATE_FREE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | } |
| 1434 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1435 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
Mauro Carvalho Chehab | df2f94e | 2015-08-21 16:18:18 -0300 | [diff] [blame] | 1436 | DVB_DEVICE_DEMUX, dmxdev->filternum); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1437 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, |
Mauro Carvalho Chehab | df2f94e | 2015-08-21 16:18:18 -0300 | [diff] [blame] | 1438 | dmxdev, DVB_DEVICE_DVR, dmxdev->filternum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | |
Andreas Oberritter | 34731df | 2006-03-14 17:31:01 -0300 | [diff] [blame] | 1440 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | |
| 1442 | return 0; |
| 1443 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | EXPORT_SYMBOL(dvb_dmxdev_init); |
| 1446 | |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1447 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | { |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 1449 | dmxdev->exit = 1; |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1450 | if (dmxdev->dvbdev->users > 1) { |
| 1451 | wait_event(dmxdev->dvbdev->wait_queue, |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 1452 | dmxdev->dvbdev->users == 1); |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1453 | } |
| 1454 | if (dmxdev->dvr_dvbdev->users > 1) { |
| 1455 | wait_event(dmxdev->dvr_dvbdev->wait_queue, |
devendra sharma | e90bbac | 2016-12-18 11:52:55 -0200 | [diff] [blame] | 1456 | dmxdev->dvr_dvbdev->users == 1); |
Markus Rechberger | 57861b4 | 2007-04-14 10:19:18 -0300 | [diff] [blame] | 1457 | } |
| 1458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | dvb_unregister_device(dmxdev->dvbdev); |
| 1460 | dvb_unregister_device(dmxdev->dvr_dvbdev); |
| 1461 | |
| 1462 | vfree(dmxdev->filter); |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1463 | dmxdev->filter = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | dmxdev->demux->close(dmxdev->demux); |
| 1465 | } |
Andreas Oberritter | f705e6e | 2006-03-10 15:22:31 -0300 | [diff] [blame] | 1466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | EXPORT_SYMBOL(dvb_dmxdev_release); |