--- /dev/null
+/*
+ * 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/
+ */
+
+#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, 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;
+ 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 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 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:
+ {
+ 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 < 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(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 || 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);
+}
+
+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);
+}
Code Review / kvmfornfv.git / blobdiff