2 * av7110_ca.c: CA and CI stuff
4 * Copyright (C) 1999-2002 Ralph Metzler
5 * & Marcus Metzler for convergence integrated media GmbH
7 * originally based on code by:
8 * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
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.
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.
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
28 * the project's page is at http://www.linuxtv.org/dvb/
31 #include <linux/kernel.h>
32 #include <linux/types.h>
33 #include <linux/delay.h>
35 #include <linux/timer.h>
36 #include <linux/poll.h>
39 #include "av7110_hw.h"
40 #include "av7110_ca.h"
43 void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
45 dprintk(8, "av7110:%p\n",av7110);
51 if (data[2] != 1 && data[2] != 2)
55 av7110->ci_slot[data[2] - 1].flags = 0;
58 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
61 av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
65 case CI_SWITCH_PRG_REPLY:
66 //av7110->ci_stat=data[1];
74 void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
76 if (dvb_ringbuffer_free(cibuf) < len + 2)
79 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
80 DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
81 dvb_ringbuffer_write(cibuf, data, len);
82 wake_up_interruptible(&cibuf->queue);
86 /******************************************************************************
87 * CI link layer file ops
88 ******************************************************************************/
90 static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
92 struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
95 for (p = tab; *p; p++) {
104 dvb_ringbuffer_init(*p, data, size);
109 static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
111 dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
112 dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
115 static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
123 static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
124 int slots, ca_slot_info_t *slot)
128 u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
130 for (i = 0; i < 2; i++) {
131 if (slots & (1 << i))
135 if (dvb_ringbuffer_free(cibuf) < len)
138 for (i = 0; i < 2; i++) {
139 if (slots & (1 << i)) {
141 dvb_ringbuffer_write(cibuf, msg, 8);
149 static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
150 const char __user *buf, size_t count, loff_t *ppos)
153 int non_blocking = file->f_flags & O_NONBLOCK;
154 u8 *page = (u8 *)__get_free_page(GFP_USER);
165 if (copy_from_user(page, buf, count))
168 free = dvb_ringbuffer_free(cibuf);
169 if (count + 2 > free) {
174 if (wait_event_interruptible(cibuf->queue,
175 (dvb_ringbuffer_free(cibuf) >= count + 2)))
179 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
180 DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
182 res = dvb_ringbuffer_write(cibuf, page, count);
184 free_page((unsigned long)page);
188 static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
189 char __user *buf, size_t count, loff_t *ppos)
192 int non_blocking = file->f_flags & O_NONBLOCK;
195 if (!cibuf->data || !count)
197 if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
199 if (wait_event_interruptible(cibuf->queue,
200 !dvb_ringbuffer_empty(cibuf)))
202 avail = dvb_ringbuffer_avail(cibuf);
205 len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
206 len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
207 if (avail < len + 2 || count < len)
209 DVB_RINGBUFFER_SKIP(cibuf, 2);
211 return dvb_ringbuffer_read_user(cibuf, buf, len);
214 static int dvb_ca_open(struct inode *inode, struct file *file)
216 struct dvb_device *dvbdev = file->private_data;
217 struct av7110 *av7110 = dvbdev->priv;
218 int err = dvb_generic_open(inode, file);
220 dprintk(8, "av7110:%p\n",av7110);
224 ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
228 static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
230 struct dvb_device *dvbdev = file->private_data;
231 struct av7110 *av7110 = dvbdev->priv;
232 struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
233 struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
234 unsigned int mask = 0;
236 dprintk(8, "av7110:%p\n",av7110);
238 poll_wait(file, &rbuf->queue, wait);
239 poll_wait(file, &wbuf->queue, wait);
241 if (!dvb_ringbuffer_empty(rbuf))
242 mask |= (POLLIN | POLLRDNORM);
244 if (dvb_ringbuffer_free(wbuf) > 1024)
245 mask |= (POLLOUT | POLLWRNORM);
250 static int dvb_ca_ioctl(struct inode *inode, struct file *file,
251 unsigned int cmd, void *parg)
253 struct dvb_device *dvbdev = file->private_data;
254 struct av7110 *av7110 = dvbdev->priv;
255 unsigned long arg = (unsigned long) parg;
257 dprintk(8, "av7110:%p\n",av7110);
261 return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
268 cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
269 CA_CI_LINK : CA_CI) | CA_DESCR;
271 cap.descr_type = CA_ECD;
272 memcpy(parg, &cap, sizeof(cap));
276 case CA_GET_SLOT_INFO:
278 ca_slot_info_t *info=(ca_slot_info_t *)parg;
282 av7110->ci_slot[info->num].num = info->num;
283 av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
285 memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
295 case CA_GET_DESCR_INFO:
297 ca_descr_info_t info;
301 memcpy(parg, &info, sizeof (info));
307 ca_descr_t *descr = (ca_descr_t*) parg;
309 if (descr->index >= 16)
311 if (descr->parity > 1)
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]);
328 static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
329 size_t count, loff_t *ppos)
331 struct dvb_device *dvbdev = file->private_data;
332 struct av7110 *av7110 = dvbdev->priv;
334 dprintk(8, "av7110:%p\n",av7110);
335 return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
338 static ssize_t dvb_ca_read(struct file *file, char __user *buf,
339 size_t count, loff_t *ppos)
341 struct dvb_device *dvbdev = file->private_data;
342 struct av7110 *av7110 = dvbdev->priv;
344 dprintk(8, "av7110:%p\n",av7110);
345 return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
348 static const struct file_operations dvb_ca_fops = {
349 .owner = THIS_MODULE,
351 .write = dvb_ca_write,
352 .ioctl = dvb_generic_ioctl,
354 .release = dvb_generic_release,
358 static struct dvb_device dvbdev_ca = {
362 .fops = &dvb_ca_fops,
363 .kernel_ioctl = dvb_ca_ioctl,
367 int av7110_ca_register(struct av7110 *av7110)
369 return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
370 &dvbdev_ca, av7110, DVB_DEVICE_CA);
373 void av7110_ca_unregister(struct av7110 *av7110)
375 dvb_unregister_device(av7110->ca_dev);
378 int av7110_ca_init(struct av7110* av7110)
380 return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
383 void av7110_ca_exit(struct av7110* av7110)
385 ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);