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Diffstat (limited to 'drivers/media/dvb/ttpci/av7110_ca.c')
-rw-r--r--drivers/media/dvb/ttpci/av7110_ca.c387
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
44void 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
75void 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
91static 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
110static 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
116static 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
124static 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
150static 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);
184out:
185 free_page((unsigned long)page);
186 return res;
187}
188
189static 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
215static 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
229static 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
251static 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
328static 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
338static 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
348static 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
359static 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
368int 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
374void av7110_ca_unregister(struct av7110 *av7110)
375{
376 dvb_unregister_device(av7110->ca_dev);
377}
378
379int av7110_ca_init(struct av7110* av7110)
380{
381 return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
382}
383
384void av7110_ca_exit(struct av7110* av7110)
385{
386 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
387}
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-18 00:06:29 -0400