[deliverable/linux.git] / drivers / media / dvb / ttpci / av7110_ca.c

/*
 * av7110_ca.c: CA and CI stuff
 *
 * Copyright (C) 1999-2002 Ralph  Metzler
 *                       & Marcus Metzler for convergence integrated media GmbH
 *
 * originally based on code by:
 * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 *
 *
 * the project's page is at http://www.linuxtv.org/dvb/
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/timer.h>
#include <linux/poll.h>
#include <linux/byteorder/swabb.h>
#include <linux/smp_lock.h>

#include "av7110.h"
#include "av7110_hw.h"
#include "av7110_ca.h"


void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
{
	dprintk(8, "av7110:%p\n",av7110);

	if (len < 3)
		return;
	switch (data[0]) {
	case CI_MSG_CI_INFO:
		if (data[2] != 1 && data[2] != 2)
			break;
		switch (data[1]) {
		case 0:
			av7110->ci_slot[data[2] - 1].flags = 0;
			break;
		case 1:
			av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
			break;
		case 2:
			av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
			break;
		}
		break;
	case CI_SWITCH_PRG_REPLY:
		//av7110->ci_stat=data[1];
		break;
	default:
		break;
	}
}


void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
{
	if (dvb_ringbuffer_free(cibuf) < len + 2)
		return;

	DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
	DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
	dvb_ringbuffer_write(cibuf, data, len);
	wake_up_interruptible(&cibuf->queue);
}


/******************************************************************************
 * CI link layer file ops
 ******************************************************************************/

static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
{
	struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
	void *data;

	for (p = tab; *p; p++) {
		data = vmalloc(size);
		if (!data) {
			while (p-- != tab) {
				vfree(p[0]->data);
				p[0]->data = NULL;
			}
			return -ENOMEM;
		}
		dvb_ringbuffer_init(*p, data, size);
	}
	return 0;
}

static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
{
	dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
	dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
}

static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
{
	vfree(cirbuf->data);
	cirbuf->data = NULL;
	vfree(ciwbuf->data);
	ciwbuf->data = NULL;
}

static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
		       int slots, ca_slot_info_t *slot)
{
	int i;
	int len = 0;
	u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };

	for (i = 0; i < 2; i++) {
		if (slots & (1 << i))
			len += 8;
	}

	if (dvb_ringbuffer_free(cibuf) < len)
		return -EBUSY;

	for (i = 0; i < 2; i++) {
		if (slots & (1 << i)) {
			msg[2] = i;
			dvb_ringbuffer_write(cibuf, msg, 8);
			slot[i].flags = 0;
		}
	}

	return 0;
}

static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
			   const char __user *buf, size_t count, loff_t *ppos)
{
	int free;
	int non_blocking = file->f_flags & O_NONBLOCK;
	char *page = (char *)__get_free_page(GFP_USER);
	int res;

	if (!page)
		return -ENOMEM;

	res = -EINVAL;
	if (count > 2048)
		goto out;

	res = -EFAULT;
	if (copy_from_user(page, buf, count))
		goto out;

	free = dvb_ringbuffer_free(cibuf);
	if (count + 2 > free) {
		res = -EWOULDBLOCK;
		if (non_blocking)
			goto out;
		res = -ERESTARTSYS;
		if (wait_event_interruptible(cibuf->queue,
					     (dvb_ringbuffer_free(cibuf) >= count + 2)))
			goto out;
	}

	DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
	DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);

	res = dvb_ringbuffer_write(cibuf, page, count);
out:
	free_page((unsigned long)page);
	return res;
}

static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
			  char __user *buf, size_t count, loff_t *ppos)
{
	int avail;
	int non_blocking = file->f_flags & O_NONBLOCK;
	ssize_t len;

	if (!cibuf->data || !count)
		return 0;
	if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
		return -EWOULDBLOCK;
	if (wait_event_interruptible(cibuf->queue,
				     !dvb_ringbuffer_empty(cibuf)))
		return -ERESTARTSYS;
	avail = dvb_ringbuffer_avail(cibuf);
	if (avail < 4)
		return 0;
	len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
	len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
	if (avail < len + 2 || count < len)
		return -EINVAL;
	DVB_RINGBUFFER_SKIP(cibuf, 2);

	return dvb_ringbuffer_read(cibuf, buf, len, 1);
}

static int dvb_ca_open(struct inode *inode, struct file *file)
{
	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
	struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
	int err = dvb_generic_open(inode, file);

	dprintk(8, "av7110:%p\n",av7110);

	if (err < 0)
		return err;
	ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
	return 0;
}

static unsigned int dvb_ca_poll (struct file *file, poll_table *wait)
{
	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
	struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
	struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
	struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
	unsigned int mask = 0;

	dprintk(8, "av7110:%p\n",av7110);

	poll_wait(file, &rbuf->queue, wait);
	poll_wait(file, &wbuf->queue, wait);

	if (!dvb_ringbuffer_empty(rbuf))
		mask |= (POLLIN | POLLRDNORM);

	if (dvb_ringbuffer_free(wbuf) > 1024)
		mask |= (POLLOUT | POLLWRNORM);

	return mask;
}

static int dvb_ca_ioctl(struct inode *inode, struct file *file,
		 unsigned int cmd, void *parg)
{
	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
	struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;
	unsigned long arg = (unsigned long) parg;

	dprintk(8, "av7110:%p\n",av7110);

	switch (cmd) {
	case CA_RESET:
		return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
		break;
	case CA_GET_CAP:
	{
		ca_caps_t cap;

		cap.slot_num = 2;
		cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
				 CA_CI_LINK : CA_CI) | CA_DESCR;
		cap.descr_num = 16;
		cap.descr_type = CA_ECD;
		memcpy(parg, &cap, sizeof(cap));
		break;
	}

	case CA_GET_SLOT_INFO:
	{
		ca_slot_info_t *info=(ca_slot_info_t *)parg;

		if (info->num > 1)
			return -EINVAL;
		av7110->ci_slot[info->num].num = info->num;
		av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
							CA_CI_LINK : CA_CI;
		memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
		break;
	}

	case CA_GET_MSG:
		break;

	case CA_SEND_MSG:
		break;

	case CA_GET_DESCR_INFO:
	{
		ca_descr_info_t info;

		info.num = 16;
		info.type = CA_ECD;
		memcpy(parg, &info, sizeof (info));
		break;
	}

	case CA_SET_DESCR:
	{
		ca_descr_t *descr = (ca_descr_t*) parg;

		if (descr->index >= 16)
			return -EINVAL;
		if (descr->parity > 1)
			return -EINVAL;
		av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
			      (descr->index<<8)|descr->parity,
			      (descr->cw[0]<<8)|descr->cw[1],
			      (descr->cw[2]<<8)|descr->cw[3],
			      (descr->cw[4]<<8)|descr->cw[5],
			      (descr->cw[6]<<8)|descr->cw[7]);
		break;
	}

	default:
		return -EINVAL;
	}
	return 0;
}

static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
			    size_t count, loff_t *ppos)
{
	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
	struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;

	dprintk(8, "av7110:%p\n",av7110);
	return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
}

static ssize_t dvb_ca_read(struct file *file, char __user *buf,
			   size_t count, loff_t *ppos)
{
	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
	struct av7110 *av7110 = (struct av7110 *) dvbdev->priv;

	dprintk(8, "av7110:%p\n",av7110);
	return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
}


static struct file_operations dvb_ca_fops = {
	.owner		= THIS_MODULE,
	.read		= dvb_ca_read,
	.write		= dvb_ca_write,
	.ioctl		= dvb_generic_ioctl,
	.open		= dvb_ca_open,
	.release	= dvb_generic_release,
	.poll		= dvb_ca_poll,
};

static struct dvb_device dvbdev_ca = {
	.priv		= NULL,
	.users		= 1,
	.writers	= 1,
	.fops		= &dvb_ca_fops,
	.kernel_ioctl	= dvb_ca_ioctl,
};


int av7110_ca_register(struct av7110 *av7110)
{
	return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
				   &dvbdev_ca, av7110, DVB_DEVICE_CA);
}

void av7110_ca_unregister(struct av7110 *av7110)
{
	dvb_unregister_device(av7110->ca_dev);
}

int av7110_ca_init(struct av7110* av7110)
{
	return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
}

void av7110_ca_exit(struct av7110* av7110)
{
	ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
}
Commit	Line	Data
1da177e4 LT	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"
15ac8e66	43	#include "av7110_ca.h"
1da177e4 LT	44
	45
	46	void CI_handle(struct av7110 av7110, u8 data, u16 len)
	47	{
	48	dprintk(8, "av7110:%p\n",av7110);
	49
	50	if (len < 3)
	51	return;
	52	switch (data[0]) {
	53	case CI_MSG_CI_INFO:
	54	if (data[2] != 1 && data[2] != 2)
	55	break;
	56	switch (data[1]) {
	57	case 0:
	58	av7110->ci_slot[data[2] - 1].flags = 0;
	59	break;
	60	case 1:
	61	av7110->ci_slot[data[2] - 1].flags \|= CA_CI_MODULE_PRESENT;
	62	break;
	63	case 2:
	64	av7110->ci_slot[data[2] - 1].flags \|= CA_CI_MODULE_READY;
	65	break;
	66	}
	67	break;
	68	case CI_SWITCH_PRG_REPLY:
	69	//av7110->ci_stat=data[1];
	70	break;
	71	default:
	72	break;
	73	}
	74	}
	75
	76
	77	void ci_get_data(struct dvb_ringbuffer cibuf, u8 data, int len)
	78	{
	79	if (dvb_ringbuffer_free(cibuf) < len + 2)
	80	return;
	81
	82	DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
	83	DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
	84	dvb_ringbuffer_write(cibuf, data, len);
	85	wake_up_interruptible(&cibuf->queue);
	86	}
	87
	88
	89	/******************************************************************************
	90	* CI link layer file ops
	91	******************************************************************************/
	92
	93	static int ci_ll_init(struct dvb_ringbuffer cirbuf, struct dvb_ringbuffer ciwbuf, int size)
	94	{
	95	struct dvb_ringbuffer tab[] = { cirbuf, ciwbuf, NULL }, *p;
	96	void *data;
	97
	98	for (p = tab; *p; p++) {
	99	data = vmalloc(size);
	100	if (!data) {
	101	while (p-- != tab) {
	102	vfree(p[0]->data);
	103	p[0]->data = NULL;
	104	}
	105	return -ENOMEM;
	106	}
	107	dvb_ringbuffer_init(*p, data, size);
108	}
109	return 0;
110	}
111
112	static void ci_ll_flush(struct dvb_ringbuffer cirbuf, struct dvb_ringbuffer ciwbuf)
113	{
114	dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
115	dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
116	}
117
118	static void ci_ll_release(struct dvb_ringbuffer cirbuf, struct dvb_ringbuffer ciwbuf)
119	{
120	vfree(cirbuf->data);
121	cirbuf->data = NULL;
122	vfree(ciwbuf->data);
123	ciwbuf->data = NULL;
124	}
125
126	static int ci_ll_reset(struct dvb_ringbuffer cibuf, struct file file,
3165dcb3	127	int slots, ca_slot_info_t *slot)
1da177e4 LT	128	{
	129	int i;
	130	int len = 0;
	131	u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
	132
	133	for (i = 0; i < 2; i++) {
	134	if (slots & (1 << i))
	135	len += 8;
	136	}
	137
	138	if (dvb_ringbuffer_free(cibuf) < len)
	139	return -EBUSY;
	140
	141	for (i = 0; i < 2; i++) {
	142	if (slots & (1 << i)) {
	143	msg[2] = i;
	144	dvb_ringbuffer_write(cibuf, msg, 8);
	145	slot[i].flags = 0;
	146	}
	147	}
	148
	149	return 0;
	150	}
	151
	152	static ssize_t ci_ll_write(struct dvb_ringbuffer cibuf, struct file file,
	153	const char __user buf, size_t count, loff_t ppos)
	154	{
	155	int free;
	156	int non_blocking = file->f_flags & O_NONBLOCK;
	157	char page = (char )__get_free_page(GFP_USER);
	158	int res;
	159
	160	if (!page)
	161	return -ENOMEM;
	162
	163	res = -EINVAL;
	164	if (count > 2048)
	165	goto out;
	166
	167	res = -EFAULT;
	168	if (copy_from_user(page, buf, count))
	169	goto out;
	170
	171	free = dvb_ringbuffer_free(cibuf);
	172	if (count + 2 > free) {
	173	res = -EWOULDBLOCK;
	174	if (non_blocking)
	175	goto out;
	176	res = -ERESTARTSYS;
	177	if (wait_event_interruptible(cibuf->queue,
	178	(dvb_ringbuffer_free(cibuf) >= count + 2)))
	179	goto out;
	180	}
	181
	182	DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
	183	DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
	184
	185	res = dvb_ringbuffer_write(cibuf, page, count);
	186	out:
	187	free_page((unsigned long)page);
	188	return res;
	189	}
	190
	191	static ssize_t ci_ll_read(struct dvb_ringbuffer cibuf, struct file file,
192	char __user buf, size_t count, loff_t ppos)
193	{
194	int avail;
195	int non_blocking = file->f_flags & O_NONBLOCK;
196	ssize_t len;
197
198	if (!cibuf->data \|\| !count)
199	return 0;
200	if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
201	return -EWOULDBLOCK;
202	if (wait_event_interruptible(cibuf->queue,
203	!dvb_ringbuffer_empty(cibuf)))
204	return -ERESTARTSYS;
205	avail = dvb_ringbuffer_avail(cibuf);
206	if (avail < 4)
207	return 0;
208	len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
209	len \|= DVB_RINGBUFFER_PEEK(cibuf, 1);
210	if (avail < len + 2 \|\| count < len)
211	return -EINVAL;
212	DVB_RINGBUFFER_SKIP(cibuf, 2);
213
214	return dvb_ringbuffer_read(cibuf, buf, len, 1);
215	}
216
217	static int dvb_ca_open(struct inode inode, struct file file)
218	{
219	struct dvb_device dvbdev = (struct dvb_device ) file->private_data;
220	struct av7110 av7110 = (struct av7110 ) dvbdev->priv;
221	int err = dvb_generic_open(inode, file);
222
223	dprintk(8, "av7110:%p\n",av7110);
224
225	if (err < 0)
226	return err;
227	ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
228	return 0;
229	}
230
231	static unsigned int dvb_ca_poll (struct file file, poll_table wait)
232	{
233	struct dvb_device dvbdev = (struct dvb_device ) file->private_data;
234	struct av7110 av7110 = (struct av7110 ) dvbdev->priv;
235	struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
236	struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
237	unsigned int mask = 0;
238
239	dprintk(8, "av7110:%p\n",av7110);
240
241	poll_wait(file, &rbuf->queue, wait);
242	poll_wait(file, &wbuf->queue, wait);
243
244	if (!dvb_ringbuffer_empty(rbuf))
245	mask \|= (POLLIN \| POLLRDNORM);
246
247	if (dvb_ringbuffer_free(wbuf) > 1024)
248	mask \|= (POLLOUT \| POLLWRNORM);
249
250	return mask;
251	}
252
253	static int dvb_ca_ioctl(struct inode inode, struct file file,
254	unsigned int cmd, void *parg)
255	{
256	struct dvb_device dvbdev = (struct dvb_device ) file->private_data;
257	struct av7110 av7110 = (struct av7110 ) dvbdev->priv;
258	unsigned long arg = (unsigned long) parg;
259
260	dprintk(8, "av7110:%p\n",av7110);
261
262	switch (cmd) {
263	case CA_RESET:
264	return ci_ll_reset(&av7110->ci_wbuffer, file, arg, &av7110->ci_slot[0]);
265	break;
266	case CA_GET_CAP:
267	{
268	ca_caps_t cap;
269
270	cap.slot_num = 2;
271	cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
272	CA_CI_LINK : CA_CI) \| CA_DESCR;
273	cap.descr_num = 16;
274	cap.descr_type = CA_ECD;
275	memcpy(parg, &cap, sizeof(cap));
276	break;
277	}
278
279	case CA_GET_SLOT_INFO:
280	{
281	ca_slot_info_t info=(ca_slot_info_t )parg;
282
283	if (info->num > 1)
284	return -EINVAL;
285	av7110->ci_slot[info->num].num = info->num;
286	av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
287	CA_CI_LINK : CA_CI;
288	memcpy(info, &av7110->ci_slot[info->num], sizeof(ca_slot_info_t));
289	break;
290	}
291
292	case CA_GET_MSG:
293	break;
294
295	case CA_SEND_MSG:
296	break;
297
298	case CA_GET_DESCR_INFO:
299	{
300	ca_descr_info_t info;
301
302	info.num = 16;
303	info.type = CA_ECD;
304	memcpy(parg, &info, sizeof (info));
305	break;
306	}
307
308	case CA_SET_DESCR:
309	{
310	ca_descr_t descr = (ca_descr_t) parg;
311
312	if (descr->index >= 16)
313	return -EINVAL;
314	if (descr->parity > 1)
315	return -EINVAL;
316	av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
317	(descr->index<<8)\|descr->parity,
318	(descr->cw[0]<<8)\|descr->cw[1],
319	(descr->cw[2]<<8)\|descr->cw[3],
320	(descr->cw[4]<<8)\|descr->cw[5],
321	(descr->cw[6]<<8)\|descr->cw[7]);
322	break;
323	}
324
325	default:
326	return -EINVAL;
327	}
328	return 0;
329	}
330
331	static ssize_t dvb_ca_write(struct file file, const char __user buf,
332	size_t count, loff_t *ppos)
333	{
334	struct dvb_device dvbdev = (struct dvb_device ) file->private_data;
335	struct av7110 av7110 = (struct av7110 ) dvbdev->priv;
336
337	dprintk(8, "av7110:%p\n",av7110);
338	return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
339	}
340
341	static ssize_t dvb_ca_read(struct file file, char __user buf,
342	size_t count, loff_t *ppos)
343	{
344	struct dvb_device dvbdev = (struct dvb_device ) file->private_data;
345	struct av7110 av7110 = (struct av7110 ) dvbdev->priv;
346
347	dprintk(8, "av7110:%p\n",av7110);
348	return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
349	}
350
351
352
353	static struct file_operations dvb_ca_fops = {
354	.owner = THIS_MODULE,
355	.read = dvb_ca_read,
356	.write = dvb_ca_write,
357	.ioctl = dvb_generic_ioctl,
358	.open = dvb_ca_open,
359	.release = dvb_generic_release,
360	.poll = dvb_ca_poll,
361	};
362
363	static struct dvb_device dvbdev_ca = {
364	.priv = NULL,
365	.users = 1,
366	.writers = 1,
367	.fops = &dvb_ca_fops,
368	.kernel_ioctl = dvb_ca_ioctl,
369	};
370
371
372	int av7110_ca_register(struct av7110 *av7110)
373	{
fdc53a6d	374	return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
1da177e4 LT	375	&dvbdev_ca, av7110, DVB_DEVICE_CA);
	376	}
	377
	378	void av7110_ca_unregister(struct av7110 *av7110)
	379	{
	380	dvb_unregister_device(av7110->ca_dev);
	381	}
	382
	383	int av7110_ca_init(struct av7110* av7110)
	384	{
	385	return ci_ll_init(&av7110->ci_rbuffer, &av7110->ci_wbuffer, 8192);
	386	}
	387
	388	void av7110_ca_exit(struct av7110* av7110)
	389	{
	390	ci_ll_release(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
	391	}