1 files changed, 261 insertions, 0 deletions

diff --git a/drivers/media/dvb/ngene/ngene-dvb.c b/drivers/media/dvb/ngene/ngene-dvb.c
new file mode 100644
index 00000000000..fcb16a615aa
--- /dev/null
+++ b/drivers/media/dvb/ngene/ngene-dvb.c
@@ -0,0 +1,261 @@
+/*
+ * ngene-dvb.c: nGene PCIe bridge driver - DVB functions
+ *
+ * Copyright (C) 2005-2007 Micronas
+ *
+ * Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
+ *                         Modifications for new nGene firmware,
+ *                         support for EEPROM-copying,
+ *                         support for new dual DVB-S2 card prototype
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 only, as published by the Free Software Foundation.
+ *
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/io.h>
+#include <asm/div64.h>
+#include <linux/pci.h>
+#include <linux/timer.h>
+#include <linux/byteorder/generic.h>
+#include <linux/firmware.h>
+#include <linux/vmalloc.h>
+
+#include "ngene.h"
+
+
+/****************************************************************************/
+/* COMMAND API interface ****************************************************/
+/****************************************************************************/
+
+static ssize_t ts_write(struct file *file, const char *buf,
+                        size_t count, loff_t *ppos)
+{
+        struct dvb_device *dvbdev = file->private_data;
+        struct ngene_channel *chan = dvbdev->priv;
+        struct ngene *dev = chan->dev;
+
+        if (wait_event_interruptible(dev->tsout_rbuf.queue,
+                                     dvb_ringbuffer_free
+                                     (&dev->tsout_rbuf) >= count) < 0)
+                return 0;
+
+        dvb_ringbuffer_write(&dev->tsout_rbuf, buf, count);
+
+        return count;
+}
+
+static ssize_t ts_read(struct file *file, char *buf,
+                       size_t count, loff_t *ppos)
+{
+        struct dvb_device *dvbdev = file->private_data;
+        struct ngene_channel *chan = dvbdev->priv;
+        struct ngene *dev = chan->dev;
+        int left, avail;
+
+        left = count;
+        while (left) {
+                if (wait_event_interruptible(
+                            dev->tsin_rbuf.queue,
+                            dvb_ringbuffer_avail(&dev->tsin_rbuf) > 0) < 0)
+                        return -EAGAIN;
+                avail = dvb_ringbuffer_avail(&dev->tsin_rbuf);
+                if (avail > left)
+                        avail = left;
+                dvb_ringbuffer_read_user(&dev->tsin_rbuf, buf, avail);
+                left -= avail;
+                buf += avail;
+        }
+        return count;
+}
+
+static const struct file_operations ci_fops = {
+        .owner   = THIS_MODULE,
+        .read    = ts_read,
+        .write   = ts_write,
+        .open    = dvb_generic_open,
+        .release = dvb_generic_release,
+};
+
+struct dvb_device ngene_dvbdev_ci = {
+        .priv    = 0,
+        .readers = -1,
+        .writers = -1,
+        .users   = -1,
+        .fops    = &ci_fops,
+};
+
+
+/****************************************************************************/
+/* DVB functions and API interface ******************************************/
+/****************************************************************************/
+
+static void swap_buffer(u32 *p, u32 len)
+{
+        while (len) {
+                *p = swab32(*p);
+                p++;
+                len -= 4;
+        }
+}
+
+/* start of filler packet */
+static u8 fill_ts[] = { 0x47, 0x1f, 0xff, 0x10, TS_FILLER };
+
+/* #define DEBUG_CI_XFER */
+#ifdef DEBUG_CI_XFER
+static u32 ok;
+static u32 overflow;
+static u32 stripped;
+#endif
+
+void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
+{
+        struct ngene_channel *chan = priv;
+        struct ngene *dev = chan->dev;
+
+
+        if (flags & DF_SWAP32)
+                swap_buffer(buf, len);
+
+        if (dev->ci.en && chan->number == 2) {
+                while (len >= 188) {
+                        if (memcmp(buf, fill_ts, sizeof fill_ts) != 0) {
+                                if (dvb_ringbuffer_free(&dev->tsin_rbuf) >= 188) {
+                                        dvb_ringbuffer_write(&dev->tsin_rbuf, buf, 188);
+                                        wake_up(&dev->tsin_rbuf.queue);
+#ifdef DEBUG_CI_XFER
+                                        ok++;
+#endif
+                                }
+#ifdef DEBUG_CI_XFER
+                                else
+                                        overflow++;
+#endif
+                        }
+#ifdef DEBUG_CI_XFER
+                        else
+                                stripped++;
+
+                        if (ok % 100 == 0 && overflow)
+                                printk(KERN_WARNING "%s: ok %u overflow %u dropped %u\n", __func__, ok, overflow, stripped);
+#endif
+                        buf += 188;
+                        len -= 188;
+                }
+                return NULL;
+        }
+
+        if (chan->users > 0)
+                dvb_dmx_swfilter(&chan->demux, buf, len);
+
+        return NULL;
+}
+
+void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
+{
+        struct ngene_channel *chan = priv;
+        struct ngene *dev = chan->dev;
+        u32 alen;
+
+        alen = dvb_ringbuffer_avail(&dev->tsout_rbuf);
+        alen -= alen % 188;
+
+        if (alen < len)
+                FillTSBuffer(buf + alen, len - alen, flags);
+        else
+                alen = len;
+        dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen);
+        if (flags & DF_SWAP32)
+                swap_buffer((u32 *)buf, alen);
+        wake_up_interruptible(&dev->tsout_rbuf.queue);
+        return buf;
+}
+
+
+
+int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+        struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+        struct ngene_channel *chan = dvbdmx->priv;
+
+        if (chan->users == 0) {
+                if (!chan->dev->cmd_timeout_workaround || !chan->running)
+                        set_transfer(chan, 1);
+        }
+
+        return ++chan->users;
+}
+
+int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+        struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+        struct ngene_channel *chan = dvbdmx->priv;
+
+        if (--chan->users)
+                return chan->users;
+
+        if (!chan->dev->cmd_timeout_workaround)
+                set_transfer(chan, 0);
+
+        return 0;
+}
+
+int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
+                            int (*start_feed)(struct dvb_demux_feed *),
+                            int (*stop_feed)(struct dvb_demux_feed *),
+                            void *priv)
+{
+        dvbdemux->priv = priv;
+
+        dvbdemux->filternum = 256;
+        dvbdemux->feednum = 256;
+        dvbdemux->start_feed = start_feed;
+        dvbdemux->stop_feed = stop_feed;
+        dvbdemux->write_to_decoder = NULL;
+        dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
+                                      DMX_SECTION_FILTERING |
+                                      DMX_MEMORY_BASED_FILTERING);
+        return dvb_dmx_init(dvbdemux);
+}
+
+int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
+                               struct dvb_demux *dvbdemux,
+                               struct dmx_frontend *hw_frontend,
+                               struct dmx_frontend *mem_frontend,
+                               struct dvb_adapter *dvb_adapter)
+{
+        int ret;
+
+        dmxdev->filternum = 256;
+        dmxdev->demux = &dvbdemux->dmx;
+        dmxdev->capabilities = 0;
+        ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
+        if (ret < 0)
+                return ret;
+
+        hw_frontend->source = DMX_FRONTEND_0;
+        dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
+        mem_frontend->source = DMX_MEMORY_FE;
+        dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
+        return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
+}