395 lines
9.1 KiB
C
395 lines
9.1 KiB
C
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/*
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* av7110_ca.c: CA and CI stuff
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*
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* Copyright (C) 1999-2002 Ralph Metzler
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* & Marcus Metzler for convergence integrated media GmbH
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*
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* originally based on code by:
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* Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* To obtain the license, point your browser to
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* http://www.gnu.org/copyleft/gpl.html
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*
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*
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* the project's page is at https://linuxtv.org
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/timer.h>
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#include <linux/poll.h>
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#include <linux/gfp.h>
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#include "av7110.h"
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#include "av7110_hw.h"
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#include "av7110_ca.h"
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void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
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{
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dprintk(8, "av7110:%p\n",av7110);
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if (len < 3)
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return;
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switch (data[0]) {
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case CI_MSG_CI_INFO:
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if (data[2] != 1 && data[2] != 2)
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break;
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switch (data[1]) {
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case 0:
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av7110->ci_slot[data[2] - 1].flags = 0;
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break;
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case 1:
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av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_PRESENT;
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break;
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case 2:
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av7110->ci_slot[data[2] - 1].flags |= CA_CI_MODULE_READY;
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break;
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}
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break;
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case CI_SWITCH_PRG_REPLY:
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//av7110->ci_stat=data[1];
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break;
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default:
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break;
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}
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}
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void ci_get_data(struct dvb_ringbuffer *cibuf, u8 *data, int len)
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{
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if (dvb_ringbuffer_free(cibuf) < len + 2)
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return;
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DVB_RINGBUFFER_WRITE_BYTE(cibuf, len >> 8);
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DVB_RINGBUFFER_WRITE_BYTE(cibuf, len & 0xff);
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dvb_ringbuffer_write(cibuf, data, len);
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wake_up_interruptible(&cibuf->queue);
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}
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/******************************************************************************
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* CI link layer file ops
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******************************************************************************/
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static int ci_ll_init(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf, int size)
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{
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struct dvb_ringbuffer *tab[] = { cirbuf, ciwbuf, NULL }, **p;
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void *data;
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for (p = tab; *p; p++) {
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data = vmalloc(size);
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if (!data) {
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while (p-- != tab) {
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vfree(p[0]->data);
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p[0]->data = NULL;
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}
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return -ENOMEM;
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}
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dvb_ringbuffer_init(*p, data, size);
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}
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return 0;
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}
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static void ci_ll_flush(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
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{
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dvb_ringbuffer_flush_spinlock_wakeup(cirbuf);
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dvb_ringbuffer_flush_spinlock_wakeup(ciwbuf);
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}
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static void ci_ll_release(struct dvb_ringbuffer *cirbuf, struct dvb_ringbuffer *ciwbuf)
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{
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vfree(cirbuf->data);
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cirbuf->data = NULL;
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vfree(ciwbuf->data);
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ciwbuf->data = NULL;
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}
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static int ci_ll_reset(struct dvb_ringbuffer *cibuf, struct file *file,
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int slots, struct ca_slot_info *slot)
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{
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int i;
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int len = 0;
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u8 msg[8] = { 0x00, 0x06, 0x00, 0x00, 0xff, 0x02, 0x00, 0x00 };
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for (i = 0; i < 2; i++) {
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if (slots & (1 << i))
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len += 8;
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}
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if (dvb_ringbuffer_free(cibuf) < len)
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return -EBUSY;
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for (i = 0; i < 2; i++) {
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if (slots & (1 << i)) {
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msg[2] = i;
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dvb_ringbuffer_write(cibuf, msg, 8);
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slot[i].flags = 0;
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}
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}
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return 0;
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}
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static ssize_t ci_ll_write(struct dvb_ringbuffer *cibuf, struct file *file,
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const char __user *buf, size_t count, loff_t *ppos)
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{
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int free;
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int non_blocking = file->f_flags & O_NONBLOCK;
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u8 *page = (u8 *)__get_free_page(GFP_USER);
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int res;
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if (!page)
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return -ENOMEM;
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res = -EINVAL;
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if (count > 2048)
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goto out;
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res = -EFAULT;
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if (copy_from_user(page, buf, count))
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goto out;
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free = dvb_ringbuffer_free(cibuf);
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if (count + 2 > free) {
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res = -EWOULDBLOCK;
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if (non_blocking)
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goto out;
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res = -ERESTARTSYS;
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if (wait_event_interruptible(cibuf->queue,
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(dvb_ringbuffer_free(cibuf) >= count + 2)))
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goto out;
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}
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DVB_RINGBUFFER_WRITE_BYTE(cibuf, count >> 8);
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DVB_RINGBUFFER_WRITE_BYTE(cibuf, count & 0xff);
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res = dvb_ringbuffer_write(cibuf, page, count);
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out:
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free_page((unsigned long)page);
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return res;
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}
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static ssize_t ci_ll_read(struct dvb_ringbuffer *cibuf, struct file *file,
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char __user *buf, size_t count, loff_t *ppos)
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{
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int avail;
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int non_blocking = file->f_flags & O_NONBLOCK;
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ssize_t len;
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if (!cibuf->data || !count)
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return 0;
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if (non_blocking && (dvb_ringbuffer_empty(cibuf)))
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return -EWOULDBLOCK;
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if (wait_event_interruptible(cibuf->queue,
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!dvb_ringbuffer_empty(cibuf)))
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return -ERESTARTSYS;
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avail = dvb_ringbuffer_avail(cibuf);
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if (avail < 4)
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return 0;
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len = DVB_RINGBUFFER_PEEK(cibuf, 0) << 8;
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len |= DVB_RINGBUFFER_PEEK(cibuf, 1);
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if (avail < len + 2 || count < len)
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return -EINVAL;
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DVB_RINGBUFFER_SKIP(cibuf, 2);
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return dvb_ringbuffer_read_user(cibuf, buf, len);
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}
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static int dvb_ca_open(struct inode *inode, struct file *file)
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{
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struct dvb_device *dvbdev = file->private_data;
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struct av7110 *av7110 = dvbdev->priv;
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int err = dvb_generic_open(inode, file);
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dprintk(8, "av7110:%p\n",av7110);
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if (err < 0)
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return err;
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ci_ll_flush(&av7110->ci_rbuffer, &av7110->ci_wbuffer);
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return 0;
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}
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static __poll_t dvb_ca_poll (struct file *file, poll_table *wait)
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{
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struct dvb_device *dvbdev = file->private_data;
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struct av7110 *av7110 = dvbdev->priv;
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struct dvb_ringbuffer *rbuf = &av7110->ci_rbuffer;
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struct dvb_ringbuffer *wbuf = &av7110->ci_wbuffer;
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__poll_t mask = 0;
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dprintk(8, "av7110:%p\n",av7110);
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poll_wait(file, &rbuf->queue, wait);
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poll_wait(file, &wbuf->queue, wait);
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if (!dvb_ringbuffer_empty(rbuf))
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mask |= (EPOLLIN | EPOLLRDNORM);
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if (dvb_ringbuffer_free(wbuf) > 1024)
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mask |= (EPOLLOUT | EPOLLWRNORM);
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return mask;
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}
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static int dvb_ca_ioctl(struct file *file, unsigned int cmd, void *parg)
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{
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struct dvb_device *dvbdev = file->private_data;
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struct av7110 *av7110 = dvbdev->priv;
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unsigned long arg = (unsigned long) parg;
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int ret = 0;
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dprintk(8, "av7110:%p\n",av7110);
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if (mutex_lock_interruptible(&av7110->ioctl_mutex))
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return -ERESTARTSYS;
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switch (cmd) {
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case CA_RESET:
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ret = ci_ll_reset(&av7110->ci_wbuffer, file, arg,
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&av7110->ci_slot[0]);
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break;
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case CA_GET_CAP:
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{
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struct ca_caps cap;
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cap.slot_num = 2;
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cap.slot_type = (FW_CI_LL_SUPPORT(av7110->arm_app) ?
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CA_CI_LINK : CA_CI) | CA_DESCR;
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cap.descr_num = 16;
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cap.descr_type = CA_ECD;
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memcpy(parg, &cap, sizeof(cap));
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break;
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}
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case CA_GET_SLOT_INFO:
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{
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struct ca_slot_info *info=(struct ca_slot_info *)parg;
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if (info->num < 0 || info->num > 1) {
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mutex_unlock(&av7110->ioctl_mutex);
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return -EINVAL;
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}
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av7110->ci_slot[info->num].num = info->num;
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av7110->ci_slot[info->num].type = FW_CI_LL_SUPPORT(av7110->arm_app) ?
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CA_CI_LINK : CA_CI;
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memcpy(info, &av7110->ci_slot[info->num], sizeof(struct ca_slot_info));
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break;
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}
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case CA_GET_MSG:
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break;
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case CA_SEND_MSG:
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break;
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case CA_GET_DESCR_INFO:
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{
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struct ca_descr_info info;
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info.num = 16;
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info.type = CA_ECD;
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memcpy(parg, &info, sizeof (info));
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break;
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}
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case CA_SET_DESCR:
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{
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struct ca_descr *descr = (struct ca_descr*) parg;
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if (descr->index >= 16 || descr->parity > 1) {
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mutex_unlock(&av7110->ioctl_mutex);
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return -EINVAL;
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}
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av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetDescr, 5,
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(descr->index<<8)|descr->parity,
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(descr->cw[0]<<8)|descr->cw[1],
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(descr->cw[2]<<8)|descr->cw[3],
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(descr->cw[4]<<8)|descr->cw[5],
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(descr->cw[6]<<8)|descr->cw[7]);
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break;
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}
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default:
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ret = -EINVAL;
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break;
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}
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mutex_unlock(&av7110->ioctl_mutex);
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return ret;
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}
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static ssize_t dvb_ca_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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struct dvb_device *dvbdev = file->private_data;
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struct av7110 *av7110 = dvbdev->priv;
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dprintk(8, "av7110:%p\n",av7110);
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return ci_ll_write(&av7110->ci_wbuffer, file, buf, count, ppos);
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}
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static ssize_t dvb_ca_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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struct dvb_device *dvbdev = file->private_data;
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struct av7110 *av7110 = dvbdev->priv;
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dprintk(8, "av7110:%p\n",av7110);
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return ci_ll_read(&av7110->ci_rbuffer, file, buf, count, ppos);
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}
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static const struct file_operations dvb_ca_fops = {
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.owner = THIS_MODULE,
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.read = dvb_ca_read,
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.write = dvb_ca_write,
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.unlocked_ioctl = dvb_generic_ioctl,
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.open = dvb_ca_open,
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.release = dvb_generic_release,
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.poll = dvb_ca_poll,
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.llseek = default_llseek,
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};
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static struct dvb_device dvbdev_ca = {
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.priv = NULL,
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.users = 1,
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.writers = 1,
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.fops = &dvb_ca_fops,
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.kernel_ioctl = dvb_ca_ioctl,
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};
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|
|
||
|
|
|
||
|
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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);
|
||
|
|
}
|