/*
* 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/types.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/timer.h>
#include <linux/poll.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 = file->private_data;
struct av7110 *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 = file->private_data;
struct av7110 *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 = file->private_data;
struct av7110 *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 = file->private_data;
struct av7110 *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 = file->private_data;
struct av7110 *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);
}
