381 lines
8.5 KiB
C
381 lines
8.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* 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>
|
||
|
|
*
|
||
|
|
* the project's page is at https://linuxtv.org
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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 <linux/gfp.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, struct ca_slot_info *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;
|
||
|
|
u8 *page = (u8 *)__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_user(cibuf, buf, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
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 __poll_t 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;
|
||
|
|
__poll_t 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 |= (EPOLLIN | EPOLLRDNORM);
|
||
|
|
|
||
|
|
if (dvb_ringbuffer_free(wbuf) > 1024)
|
||
|
|
mask |= (EPOLLOUT | EPOLLWRNORM);
|
||
|
|
|
||
|
|
return mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dvb_ca_ioctl(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;
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
dprintk(8, "av7110:%p\n",av7110);
|
||
|
|
|
||
|
|
if (mutex_lock_interruptible(&av7110->ioctl_mutex))
|
||
|
|
return -ERESTARTSYS;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case CA_RESET:
|
||
|
|
ret = ci_ll_reset(&av7110->ci_wbuffer, file, arg,
|
||
|
|
&av7110->ci_slot[0]);
|
||
|
|
break;
|
||
|
|
case CA_GET_CAP:
|
||
|
|
{
|
||
|
|
struct ca_caps 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:
|
||
|
|
{
|
||
|
|
struct ca_slot_info *info=(struct ca_slot_info *)parg;
|
||
|
|
|
||
|
|
if (info->num < 0 || info->num > 1) {
|
||
|
|
mutex_unlock(&av7110->ioctl_mutex);
|
||
|
|
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(struct ca_slot_info));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case CA_GET_MSG:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case CA_SEND_MSG:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case CA_GET_DESCR_INFO:
|
||
|
|
{
|
||
|
|
struct ca_descr_info info;
|
||
|
|
|
||
|
|
info.num = 16;
|
||
|
|
info.type = CA_ECD;
|
||
|
|
memcpy(parg, &info, sizeof (info));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case CA_SET_DESCR:
|
||
|
|
{
|
||
|
|
struct ca_descr *descr = (struct ca_descr*) parg;
|
||
|
|
|
||
|
|
if (descr->index >= 16 || descr->parity > 1) {
|
||
|
|
mutex_unlock(&av7110->ioctl_mutex);
|
||
|
|
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:
|
||
|
|
ret = -EINVAL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&av7110->ioctl_mutex);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
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 const struct file_operations dvb_ca_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.read = dvb_ca_read,
|
||
|
|
.write = dvb_ca_write,
|
||
|
|
.unlocked_ioctl = dvb_generic_ioctl,
|
||
|
|
.open = dvb_ca_open,
|
||
|
|
.release = dvb_generic_release,
|
||
|
|
.poll = dvb_ca_poll,
|
||
|
|
.llseek = default_llseek,
|
||
|
|
};
|
||
|
|
|
||
|
|
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, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|