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Diffstat (limited to 'drivers/media/dvb/ttpci/av7110_ca.c')
-rw-r--r--drivers/media/dvb/ttpci/av7110_ca.c390
1 files changed, 390 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 000000000000..21f7aacf7726
--- /dev/null
+++ b/drivers/media/dvb/ttpci/av7110_ca.c
@@ -0,0 +1,390 @@
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/dvb/
29 */
30
31#include <linux/kernel.h>
32#include <linux/sched.h>
33#include <linux/types.h>
34#include <linux/delay.h>
35#include <linux/fs.h>
36#include <linux/timer.h>
37#include <linux/poll.h>
38#include <linux/byteorder/swabb.h>
39#include <linux/smp_lock.h>
40
41#include "av7110.h"
42#include "av7110_hw.h"
43
44
45void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
46{
47 dprintk(8, "av7110:%p\n",av7110);
48
49 if (len < 3)
50 return;
51 switch (data[0]) {
52 case CI_MSG_CI_INFO:
53 if (data[2] != 1 && data[2] != 2)
54 break;
55 switch (data[1]) {
56 case 0:
57 av7110->ci_slot[data[2] - 1].flags = 0;
58 break;
59 case 1:
60 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
61 break;
62 case 2:
63 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
64 break;
65 }
66 break;
67 case CI_SWITCH_PRG_REPLY:
68 //av7110->ci_stat=data[1];
69 break;
70 default:
71 break;
72 }
73}
74
75
76void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
77{
78 if (dvb_ringbuffer_free(cibuf) < len + 2)
79 return;
80
81 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
82 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
83 dvb_ringbuffer_write(cibuf, data, len);
84 wake_up_interruptible(&cibuf->queue);
85}
86
87
88/******************************************************************************
89 * CI link layer file ops
90 ******************************************************************************/
91
92static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
93{
94 struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
95 void *data;
96
97 for (p = tab; *p; p++) {
98 data = vmalloc(size);
99 if (!data) {
100 while (p-- != tab) {
101 vfree(p[0]->data);
102 p[0]->data = NULL;
103 }
104 return -ENOMEM;
105 }
106 dvb_ringbuffer_init(*p, data, size);
107 }
108 return 0;
109}
110
111static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
112{
113 dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
114 dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
115}
116
117static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
118{
119 vfree(cirbuf->data);
120 cirbuf->data = NULL;
121 vfree(ciwbuf->data);
122 ciwbuf->data = NULL;
123}
124
125static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
126 int slots, ca_slot_info_t *slot)
127{
128 int i;
129 int len = 0;
130 u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
131
132 for (i = 0; i < 2; i++) {
133 if (slots & (1 << i))
134 len += 8;
135 }
136
137 if (dvb_ringbuffer_free(cibuf) < len)
138 return -EBUSY;
139
140 for (i = 0; i < 2; i++) {
141 if (slots & (1 << i)) {
142 msg[2] = i;
143 dvb_ringbuffer_write(cibuf, msg, 8);
144 slot[i].flags = 0;
145 }
146 }
147
148 return 0;
149}
150
151static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
152 const char __user *buf, size_t count, loff_t *ppos)
153{
154 int free;
155 int non_blocking = file->f_flags & O_NONBLOCK;
156 char *page = (char *)__get_free_page(GFP_USER);
157 int res;
158
159 if (!page)
160 return -ENOMEM;
161
162 res = -EINVAL;
163 if (count > 2048)
164 goto out;
165
166 res = -EFAULT;
167 if (copy_from_user(page, buf, count))
168 goto out;
169
170 free = dvb_ringbuffer_free(cibuf);
171 if (count + 2 > free) {
172 res = -EWOULDBLOCK;
173 if (non_blocking)
174 goto out;
175 res = -ERESTARTSYS;
176 if (wait_event_interruptible(cibuf->queue,
177 (dvb_ringbuffer_free(cibuf) >= count + 2)))
178 goto out;
179 }
180
181 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
182 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
183
184 res = dvb_ringbuffer_write(cibuf, page, count);
185out:
186 free_page((unsigned long)page);
187 return res;
188}
189
190static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
191 char __user *buf, size_t count, loff_t *ppos)
192{
193 int avail;
194 int non_blocking = file->f_flags & O_NONBLOCK;
195 ssize_t len;
196
197 if (!cibuf->data || !count)
198 return 0;
199 if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
200 return -EWOULDBLOCK;
201 if (wait_event_interruptible(cibuf->queue,
202 !dvb_ringbuffer_empty(cibuf)))
203 return -ERESTARTSYS;
204 avail = dvb_ringbuffer_avail(cibuf);
205 if (avail < 4)
206 return 0;
207 len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
208 len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
209 if (avail < len + 2 || count < len)
210 return -EINVAL;
211 DVB_RINGBUFFER_SKIP(cibuf, 2);
212
213 return dvb_ringbuffer_read(cibuf, buf, len, 1);
214}
215
216static int dvb_ca_open(struct inode *inode, struct file *file)
217{
218 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
219 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
220 int err = dvb_generic_open(inode, file);
221
222 dprintk(8, "av7110:%p\n",av7110);
223
224 if (err < 0)
225 return err;
226 ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
227 return 0;
228}
229
230static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
231{
232 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
233 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
234 struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
235 struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
236 unsigned int mask = 0;
237
238 dprintk(8, "av7110:%p\n",av7110);
239
240 poll_wait(file, &rbuf->queue, wait);
241 poll_wait(file, &wbuf->queue, wait);
242
243 if (!dvb_ringbuffer_empty(rbuf))
244 mask |= (POLLIN | POLLRDNORM);
245
246 if (dvb_ringbuffer_free(wbuf) > 1024)
247 mask |= (POLLOUT | POLLWRNORM);
248
249 return mask;
250}
251
252static int dvb_ca_ioctl(struct inode *inode, struct file *file,
253 unsigned int cmd, void *parg)
254{
255 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
256 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
257 unsigned long arg = (unsigned long) parg;
258
259 dprintk(8, "av7110:%p\n",av7110);
260
261 switch (cmd) {
262 case CA_RESET:
263 return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
264 break;
265 case CA_GET_CAP:
266 {
267 ca_caps_t cap;
268
269 cap.slot_num = 2;
270 cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
271 CA_CI_LINK : CA_CI) | CA_DESCR;
272 cap.descr_num = 16;
273 cap.descr_type = CA_ECD;
274 memcpy(parg, &cap, sizeof(cap));
275 break;
276 }
277
278 case CA_GET_SLOT_INFO:
279 {
280 ca_slot_info_t *info=(ca_slot_info_t *)parg;
281
282 if (info->num > 1)
283 return -EINVAL;
284 av7110->ci_slot[info->num].num = info->num;
285 av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
286 CA_CI_LINK : CA_CI;
287 memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
288 break;
289 }
290
291 case CA_GET_MSG:
292 break;
293
294 case CA_SEND_MSG:
295 break;
296
297 case CA_GET_DESCR_INFO:
298 {
299 ca_descr_info_t info;
300
301 info.num = 16;
302 info.type = CA_ECD;
303 memcpy(parg, &info, sizeof (info));
304 break;
305 }
306
307 case CA_SET_DESCR:
308 {
309 ca_descr_t *descr = (ca_descr_t*) parg;
310
311 if (descr->index >= 16)
312 return -EINVAL;
313 if (descr->parity > 1)
314 return -EINVAL;
315 av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
316 (descr->index<<8)|descr->parity,
317 (descr->cw[0]<<8)|descr->cw[1],
318 (descr->cw[2]<<8)|descr->cw[3],
319 (descr->cw[4]<<8)|descr->cw[5],
320 (descr->cw[6]<<8)|descr->cw[7]);
321 break;
322 }
323
324 default:
325 return -EINVAL;
326 }
327 return 0;
328}
329
330static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
331 size_t count, loff_t *ppos)
332{
333 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
334 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
335
336 dprintk(8, "av7110:%p\n",av7110);
337 return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
338}
339
340static ssize_t dvb_ca_read(struct file *file, char __user *buf,
341 size_t count, loff_t *ppos)
342{
343 struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
344 struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
345
346 dprintk(8, "av7110:%p\n",av7110);
347 return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
348}
349
350
351
352static struct file_operations dvb_ca_fops = {
353 .owner = THIS_MODULE,
354 .read = dvb_ca_read,
355 .write = dvb_ca_write,
356 .ioctl = dvb_generic_ioctl,
357 .open = dvb_ca_open,
358 .release = dvb_generic_release,
359 .poll = dvb_ca_poll,
360};
361
362static struct dvb_device dvbdev_ca = {
363 .priv = NULL,
364 .users = 1,
365 .writers = 1,
366 .fops = &dvb_ca_fops,
367 .kernel_ioctl = dvb_ca_ioctl,
368};
369
370
371int av7110_ca_register(struct av7110 *av7110)
372{
373 return dvb_register_device(av7110->dvb_adapter, &av7110->ca_dev,
374 &dvbdev_ca, av7110, DVB_DEVICE_CA);
375}
376
377void av7110_ca_unregister(struct av7110 *av7110)
378{
379 dvb_unregister_device(av7110->ca_dev);
380}
381
382int av7110_ca_init(struct av7110* av7110)
383{
384 return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
385}
386
387void av7110_ca_exit(struct av7110* av7110)
388{
389 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
390}
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