diff options
Diffstat (limited to 'drivers/media/dvb/ttpci/av7110_ca.c')
-rw-r--r-- | drivers/media/dvb/ttpci/av7110_ca.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/drivers/media/dvb/ttpci/av7110_ca.c b/drivers/media/dvb/ttpci/av7110_ca.c new file mode 100644 index 00000000000..9fc1dd0ba4c --- /dev/null +++ b/drivers/media/dvb/ttpci/av7110_ca.c | |||
@@ -0,0 +1,387 @@ | |||
1 | /* | ||
2 | * av7110_ca.c: CA and CI stuff | ||
3 | * | ||
4 | * Copyright (C) 1999-2002 Ralph Metzler | ||
5 | * & Marcus Metzler for convergence integrated media GmbH | ||
6 | * | ||
7 | * originally based on code by: | ||
8 | * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de> | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or | ||
11 | * modify it under the terms of the GNU General Public License | ||
12 | * as published by the Free Software Foundation; either version 2 | ||
13 | * of the License, or (at your option) any later version. | ||
14 | * | ||
15 | * | ||
16 | * This program is distributed in the hope that it will be useful, | ||
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
19 | * GNU General Public License for more details. | ||
20 | * | ||
21 | * | ||
22 | * You should have received a copy of the GNU General Public License | ||
23 | * along with this program; if not, write to the Free Software | ||
24 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
25 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | ||
26 | * | ||
27 | * | ||
28 | * the project's page is at http://www.linuxtv.org/ | ||
29 | */ | ||
30 | |||
31 | #include <linux/kernel.h> | ||
32 | #include <linux/types.h> | ||
33 | #include <linux/delay.h> | ||
34 | #include <linux/fs.h> | ||
35 | #include <linux/timer.h> | ||
36 | #include <linux/poll.h> | ||
37 | #include <linux/gfp.h> | ||
38 | |||
39 | #include "av7110.h" | ||
40 | #include "av7110_hw.h" | ||
41 | #include "av7110_ca.h" | ||
42 | |||
43 | |||
44 | void CI_handle(struct av7110 *av7110, u8 *data, u16 len) | ||
45 | { | ||
46 | dprintk(8, "av7110:%p\n",av7110); | ||
47 | |||
48 | if (len < 3) | ||
49 | return; | ||
50 | switch (data[0]) { | ||
51 | case CI_MSG_CI_INFO: | ||
52 | if (data[2] != 1 && data[2] != 2) | ||
53 | break; | ||
54 | switch (data[1]) { | ||
55 | case 0: | ||
56 | av7110->ci_slot[data[2] - 1].flags = 0; | ||
57 | break; | ||
58 | case 1: | ||
59 | av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT; | ||
60 | break; | ||
61 | case 2: | ||
62 | av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY; | ||
63 | break; | ||
64 | } | ||
65 | break; | ||
66 | case CI_SWITCH_PRG_REPLY: | ||
67 | //av7110->ci_stat=data[1]; | ||
68 | break; | ||
69 | default: | ||
70 | break; | ||
71 | } | ||
72 | } | ||
73 | |||
74 | |||
75 | void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len) | ||
76 | { | ||
77 | if (dvb_ringbuffer_free(cibuf) < len + 2) | ||
78 | return; | ||
79 | |||
80 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8); | ||
81 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff); | ||
82 | dvb_ringbuffer_write(cibuf, data, len); | ||
83 | wake_up_interruptible(&cibuf->queue); | ||
84 | } | ||
85 | |||
86 | |||
87 | /****************************************************************************** | ||
88 | * CI link layer file ops | ||
89 | ******************************************************************************/ | ||
90 | |||
91 | static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size) | ||
92 | { | ||
93 | struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p; | ||
94 | void *data; | ||
95 | |||
96 | for (p = tab; *p; p++) { | ||
97 | data = vmalloc(size); | ||
98 | if (!data) { | ||
99 | while (p-- != tab) { | ||
100 | vfree(p[0]->data); | ||
101 | p[0]->data = NULL; | ||
102 | } | ||
103 | return -ENOMEM; | ||
104 | } | ||
105 | dvb_ringbuffer_init(*p, data, size); | ||
106 | } | ||
107 | return 0; | ||
108 | } | ||
109 | |||
110 | static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf) | ||
111 | { | ||
112 | dvb_ringbuffer_flush_spinlock_wakeup(cirbuf); | ||
113 | dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf); | ||
114 | } | ||
115 | |||
116 | static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf) | ||
117 | { | ||
118 | vfree(cirbuf->data); | ||
119 | cirbuf->data = NULL; | ||
120 | vfree(ciwbuf->data); | ||
121 | ciwbuf->data = NULL; | ||
122 | } | ||
123 | |||
124 | static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file, | ||
125 | int slots, ca_slot_info_t *slot) | ||
126 | { | ||
127 | int i; | ||
128 | int len = 0; | ||
129 | u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 }; | ||
130 | |||
131 | for (i = 0; i < 2; i++) { | ||
132 | if (slots & (1 << i)) | ||
133 | len += 8; | ||
134 | } | ||
135 | |||
136 | if (dvb_ringbuffer_free(cibuf) < len) | ||
137 | return -EBUSY; | ||
138 | |||
139 | for (i = 0; i < 2; i++) { | ||
140 | if (slots & (1 << i)) { | ||
141 | msg[2] = i; | ||
142 | dvb_ringbuffer_write(cibuf, msg, 8); | ||
143 | slot[i].flags = 0; | ||
144 | } | ||
145 | } | ||
146 | |||
147 | return 0; | ||
148 | } | ||
149 | |||
150 | static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file, | ||
151 | const char __user *buf, size_t count, loff_t *ppos) | ||
152 | { | ||
153 | int free; | ||
154 | int non_blocking = file->f_flags & O_NONBLOCK; | ||
155 | u8 *page = (u8 *)__get_free_page(GFP_USER); | ||
156 | int res; | ||
157 | |||
158 | if (!page) | ||
159 | return -ENOMEM; | ||
160 | |||
161 | res = -EINVAL; | ||
162 | if (count > 2048) | ||
163 | goto out; | ||
164 | |||
165 | res = -EFAULT; | ||
166 | if (copy_from_user(page, buf, count)) | ||
167 | goto out; | ||
168 | |||
169 | free = dvb_ringbuffer_free(cibuf); | ||
170 | if (count + 2 > free) { | ||
171 | res = -EWOULDBLOCK; | ||
172 | if (non_blocking) | ||
173 | goto out; | ||
174 | res = -ERESTARTSYS; | ||
175 | if (wait_event_interruptible(cibuf->queue, | ||
176 | (dvb_ringbuffer_free(cibuf) >= count + 2))) | ||
177 | goto out; | ||
178 | } | ||
179 | |||
180 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8); | ||
181 | DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff); | ||
182 | |||
183 | res = dvb_ringbuffer_write(cibuf, page, count); | ||
184 | out: | ||
185 | free_page((unsigned long)page); | ||
186 | return res; | ||
187 | } | ||
188 | |||
189 | static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file, | ||
190 | char __user *buf, size_t count, loff_t *ppos) | ||
191 | { | ||
192 | int avail; | ||
193 | int non_blocking = file->f_flags & O_NONBLOCK; | ||
194 | ssize_t len; | ||
195 | |||
196 | if (!cibuf->data || !count) | ||
197 | return 0; | ||
198 | if (non_blocking && (dvb_ringbuffer_empty(cibuf))) | ||
199 | return -EWOULDBLOCK; | ||
200 | if (wait_event_interruptible(cibuf->queue, | ||
201 | !dvb_ringbuffer_empty(cibuf))) | ||
202 | return -ERESTARTSYS; | ||
203 | avail = dvb_ringbuffer_avail(cibuf); | ||
204 | if (avail < 4) | ||
205 | return 0; | ||
206 | len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8; | ||
207 | len |= DVB_RINGBUFFER_PEEK(cibuf, 1); | ||
208 | if (avail < len + 2 || count < len) | ||
209 | return -EINVAL; | ||
210 | DVB_RINGBUFFER_SKIP(cibuf, 2); | ||
211 | |||
212 | return dvb_ringbuffer_read_user(cibuf, buf, len); | ||
213 | } | ||
214 | |||
215 | static int dvb_ca_open(struct inode *inode, struct file *file) | ||
216 | { | ||
217 | struct dvb_device *dvbdev = file->private_data; | ||
218 | struct av7110 *av7110 = dvbdev->priv; | ||
219 | int err = dvb_generic_open(inode, file); | ||
220 | |||
221 | dprintk(8, "av7110:%p\n",av7110); | ||
222 | |||
223 | if (err < 0) | ||
224 | return err; | ||
225 | ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer); | ||
226 | return 0; | ||
227 | } | ||
228 | |||
229 | static unsigned int dvb_ca_poll (struct file *file, poll_table *wait) | ||
230 | { | ||
231 | struct dvb_device *dvbdev = file->private_data; | ||
232 | struct av7110 *av7110 = dvbdev->priv; | ||
233 | struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer; | ||
234 | struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer; | ||
235 | unsigned int mask = 0; | ||
236 | |||
237 | dprintk(8, "av7110:%p\n",av7110); | ||
238 | |||
239 | poll_wait(file, &rbuf->queue, wait); | ||
240 | poll_wait(file, &wbuf->queue, wait); | ||
241 | |||
242 | if (!dvb_ringbuffer_empty(rbuf)) | ||
243 | mask |= (POLLIN | POLLRDNORM); | ||
244 | |||
245 | if (dvb_ringbuffer_free(wbuf) > 1024) | ||
246 | mask |= (POLLOUT | POLLWRNORM); | ||
247 | |||
248 | return mask; | ||
249 | } | ||
250 | |||
251 | static int dvb_ca_ioctl(struct file *file, unsigned int cmd, void *parg) | ||
252 | { | ||
253 | struct dvb_device *dvbdev = file->private_data; | ||
254 | struct av7110 *av7110 = dvbdev->priv; | ||
255 | unsigned long arg = (unsigned long) parg; | ||
256 | |||
257 | dprintk(8, "av7110:%p\n",av7110); | ||
258 | |||
259 | switch (cmd) { | ||
260 | case CA_RESET: | ||
261 | return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]); | ||
262 | break; | ||
263 | case CA_GET_CAP: | ||
264 | { | ||
265 | ca_caps_t cap; | ||
266 | |||
267 | cap.slot_num = 2; | ||
268 | cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ? | ||
269 | CA_CI_LINK : CA_CI) | CA_DESCR; | ||
270 | cap.descr_num = 16; | ||
271 | cap.descr_type = CA_ECD; | ||
272 | memcpy(parg, &cap, sizeof(cap)); | ||
273 | break; | ||
274 | } | ||
275 | |||
276 | case CA_GET_SLOT_INFO: | ||
277 | { | ||
278 | ca_slot_info_t *info=(ca_slot_info_t *)parg; | ||
279 | |||
280 | if (info->num < 0 || info->num > 1) | ||
281 | return -EINVAL; | ||
282 | av7110->ci_slot[info->num].num = info->num; | ||
283 | av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ? | ||
284 | CA_CI_LINK : CA_CI; | ||
285 | memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t)); | ||
286 | break; | ||
287 | } | ||
288 | |||
289 | case CA_GET_MSG: | ||
290 | break; | ||
291 | |||
292 | case CA_SEND_MSG: | ||
293 | break; | ||
294 | |||
295 | case CA_GET_DESCR_INFO: | ||
296 | { | ||
297 | ca_descr_info_t info; | ||
298 | |||
299 | info.num = 16; | ||
300 | info.type = CA_ECD; | ||
301 | memcpy(parg, &info, sizeof (info)); | ||
302 | break; | ||
303 | } | ||
304 | |||
305 | case CA_SET_DESCR: | ||
306 | { | ||
307 | ca_descr_t *descr = (ca_descr_t*) parg; | ||
308 | |||
309 | if (descr->index >= 16) | ||
310 | return -EINVAL; | ||
311 | if (descr->parity > 1) | ||
312 | return -EINVAL; | ||
313 | av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5, | ||
314 | (descr->index<<8)|descr->parity, | ||
315 | (descr->cw[0]<<8)|descr->cw[1], | ||
316 | (descr->cw[2]<<8)|descr->cw[3], | ||
317 | (descr->cw[4]<<8)|descr->cw[5], | ||
318 | (descr->cw[6]<<8)|descr->cw[7]); | ||
319 | break; | ||
320 | } | ||
321 | |||
322 | default: | ||
323 | return -EINVAL; | ||
324 | } | ||
325 | return 0; | ||
326 | } | ||
327 | |||
328 | static ssize_t dvb_ca_write(struct file *file, const char __user *buf, | ||
329 | size_t count, loff_t *ppos) | ||
330 | { | ||
331 | struct dvb_device *dvbdev = file->private_data; | ||
332 | struct av7110 *av7110 = dvbdev->priv; | ||
333 | |||
334 | dprintk(8, "av7110:%p\n",av7110); | ||
335 | return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos); | ||
336 | } | ||
337 | |||
338 | static ssize_t dvb_ca_read(struct file *file, char __user *buf, | ||
339 | size_t count, loff_t *ppos) | ||
340 | { | ||
341 | struct dvb_device *dvbdev = file->private_data; | ||
342 | struct av7110 *av7110 = dvbdev->priv; | ||
343 | |||
344 | dprintk(8, "av7110:%p\n",av7110); | ||
345 | return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos); | ||
346 | } | ||
347 | |||
348 | static const struct file_operations dvb_ca_fops = { | ||
349 | .owner = THIS_MODULE, | ||
350 | .read = dvb_ca_read, | ||
351 | .write = dvb_ca_write, | ||
352 | .unlocked_ioctl = dvb_generic_ioctl, | ||
353 | .open = dvb_ca_open, | ||
354 | .release = dvb_generic_release, | ||
355 | .poll = dvb_ca_poll, | ||
356 | .llseek = default_llseek, | ||
357 | }; | ||
358 | |||
359 | static struct dvb_device dvbdev_ca = { | ||
360 | .priv = NULL, | ||
361 | .users = 1, | ||
362 | .writers = 1, | ||
363 | .fops = &dvb_ca_fops, | ||
364 | .kernel_ioctl = dvb_ca_ioctl, | ||
365 | }; | ||
366 | |||
367 | |||
368 | int av7110_ca_register(struct av7110 *av7110) | ||
369 | { | ||
370 | return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev, | ||
371 | &dvbdev_ca, av7110, DVB_DEVICE_CA); | ||
372 | } | ||
373 | |||
374 | void av7110_ca_unregister(struct av7110 *av7110) | ||
375 | { | ||
376 | dvb_unregister_device(av7110->ca_dev); | ||
377 | } | ||
378 | |||
379 | int av7110_ca_init(struct av7110* av7110) | ||
380 | { | ||
381 | return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192); | ||
382 | } | ||
383 | |||
384 | void av7110_ca_exit(struct av7110* av7110) | ||
385 | { | ||
386 | ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer); | ||
387 | } | ||