1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-iso.c b/drivers/media/dvb/firewire/firedtv-iso.c
new file mode 100644
index 00000000000..a72df228e7d
--- /dev/null
+++ b/drivers/media/dvb/firewire/firedtv-iso.c
@@ -0,0 +1,111 @@
+/*
+ * FireSAT DVB driver
+ *
+ * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
+ *
+ *	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.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+
+#include <dvb_demux.h>
+
+#include <dma.h>
+#include <iso.h>
+#include <nodemgr.h>
+
+#include "firedtv.h"
+
+static void rawiso_activity_cb(struct hpsb_iso *iso);
+
+void tear_down_iso_channel(struct firedtv *fdtv)
+{
+	if (fdtv->iso_handle != NULL) {
+		hpsb_iso_stop(fdtv->iso_handle);
+		hpsb_iso_shutdown(fdtv->iso_handle);
+	}
+	fdtv->iso_handle = NULL;
+}
+
+int setup_iso_channel(struct firedtv *fdtv)
+{
+	int result;
+	fdtv->iso_handle =
+		hpsb_iso_recv_init(fdtv->ud->ne->host,
+				   256 * 200, //data_buf_size,
+				   256, //buf_packets,
+				   fdtv->isochannel,
+				   HPSB_ISO_DMA_DEFAULT, //dma_mode,
+				   -1, //stat.config.irq_interval,
+				   rawiso_activity_cb);
+	if (fdtv->iso_handle == NULL) {
+		printk(KERN_ERR "Cannot initialize iso receive.\n");
+		return -EINVAL;
+	}
+	result = hpsb_iso_recv_start(fdtv->iso_handle, -1, -1, 0);
+	if (result != 0) {
+		printk(KERN_ERR "Cannot start iso receive.\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static void rawiso_activity_cb(struct hpsb_iso *iso)
+{
+	unsigned int num;
+	unsigned int i;
+	unsigned int packet;
+	unsigned long flags;
+	struct firedtv *fdtv = NULL;
+	struct firedtv *fdtv_iterator;
+
+	spin_lock_irqsave(&fdtv_list_lock, flags);
+	list_for_each_entry(fdtv_iterator, &fdtv_list, list) {
+		if(fdtv_iterator->iso_handle == iso) {
+			fdtv = fdtv_iterator;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&fdtv_list_lock, flags);
+
+	if (fdtv) {
+		packet = iso->first_packet;
+		num = hpsb_iso_n_ready(iso);
+		for (i = 0; i < num; i++,
+			     packet = (packet + 1) % iso->buf_packets) {
+			unsigned char *buf =
+				dma_region_i(&iso->data_buf, unsigned char,
+					     iso->infos[packet].offset +
+					     sizeof(struct CIPHeader));
+			int count = (iso->infos[packet].len -
+				     sizeof(struct CIPHeader)) /
+				(188 + sizeof(struct firewireheader));
+			if (iso->infos[packet].len <= sizeof(struct CIPHeader))
+				continue; // ignore empty packet
+
+			while (count --) {
+				if (buf[sizeof(struct firewireheader)] == 0x47)
+					dvb_dmx_swfilter_packets(&fdtv->demux,
+								 &buf[sizeof(struct firewireheader)], 1);
+				else
+					printk("%s: invalid packet, skipping\n", __func__);
+				buf += 188 + sizeof(struct firewireheader);
+
+			}
+
+		}
+		hpsb_iso_recv_release_packets(iso, num);
+	}
+	else {
+		printk("%s: packets for unknown iso channel, skipping\n",
+		       __func__);
+		hpsb_iso_recv_release_packets(iso, hpsb_iso_n_ready(iso));
+	}
+}
+