-/*
- BlueZ - Bluetooth protocol stack for Linux
- Copyright (C) 2000-2001 Qualcomm Incorporated
-
- Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License version 2 as
- published by the Free Software Foundation;
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
- IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
- CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
- COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
- SOFTWARE IS DISCLAIMED.
-*/
-
/*
- * Bluetooth HCI UART(H4) protocol.
*
- * $Id: hci_h4.c,v 1.3 2002/09/09 01:17:32 maxk Exp $
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2000-2001 Qualcomm Incorporated
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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
+ *
*/
-#define VERSION "1.2"
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/sched.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
+
#include "hci_uart.h"
-#include "hci_h4.h"
#ifndef CONFIG_BT_HCIUART_DEBUG
#undef BT_DBG
#define BT_DBG( A... )
#endif
+#define VERSION "1.2"
+
+struct h4_struct {
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+};
+
+/* H4 receiver States */
+#define H4_W4_PACKET_TYPE 0
+#define H4_W4_EVENT_HDR 1
+#define H4_W4_ACL_HDR 2
+#define H4_W4_SCO_HDR 3
+#define H4_W4_DATA 4
+
/* Initialize protocol */
static int h4_open(struct hci_uart *hu)
{
struct h4_struct *h4;
-
+
BT_DBG("hu %p", hu);
-
- h4 = kmalloc(sizeof(*h4), GFP_ATOMIC);
+
+ h4 = kzalloc(sizeof(*h4), GFP_ATOMIC);
if (!h4)
return -ENOMEM;
- memset(h4, 0, sizeof(*h4));
skb_queue_head_init(&h4->txq);
struct h4_struct *h4 = hu->priv;
BT_DBG("hu %p", hu);
+
skb_queue_purge(&h4->txq);
+
return 0;
}
static int h4_close(struct hci_uart *hu)
{
struct h4_struct *h4 = hu->priv;
+
hu->priv = NULL;
BT_DBG("hu %p", hu);
skb_queue_purge(&h4->txq);
+
if (h4->rx_skb)
kfree_skb(h4->rx_skb);
hu->priv = NULL;
kfree(h4);
+
return 0;
}
/* Prepend skb with frame type */
memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
skb_queue_tail(&h4->txq, skb);
+
return 0;
}
register int room = skb_tailroom(h4->rx_skb);
BT_DBG("len %d room %d", len, room);
+
if (!len) {
hci_recv_frame(h4->rx_skb);
} else if (len > room) {
h4->rx_state = H4_W4_PACKET_TYPE;
h4->rx_skb = NULL;
h4->rx_count = 0;
+
return 0;
}
continue;
case H4_W4_EVENT_HDR:
- eh = (struct hci_event_hdr *) h4->rx_skb->data;
+ eh = hci_event_hdr(h4->rx_skb);
BT_DBG("Event header: evt 0x%2.2x plen %d", eh->evt, eh->plen);
continue;
case H4_W4_ACL_HDR:
- ah = (struct hci_acl_hdr *) h4->rx_skb->data;
+ ah = hci_acl_hdr(h4->rx_skb);
dlen = __le16_to_cpu(ah->dlen);
BT_DBG("ACL header: dlen %d", dlen);
continue;
case H4_W4_SCO_HDR:
- sh = (struct hci_sco_hdr *) h4->rx_skb->data;
+ sh = hci_sco_hdr(h4->rx_skb);
BT_DBG("SCO header: dlen %d", sh->dlen);
ptr++; count--;
continue;
};
+
ptr++; count--;
/* Allocate packet */
h4->rx_count = 0;
return 0;
}
+
h4->rx_skb->dev = (void *) hu->hdev;
bt_cb(h4->rx_skb)->pkt_type = type;
}
+
return count;
}
}
static struct hci_uart_proto h4p = {
- .id = HCI_UART_H4,
- .open = h4_open,
- .close = h4_close,
- .recv = h4_recv,
- .enqueue = h4_enqueue,
- .dequeue = h4_dequeue,
- .flush = h4_flush,
+ .id = HCI_UART_H4,
+ .open = h4_open,
+ .close = h4_close,
+ .recv = h4_recv,
+ .enqueue = h4_enqueue,
+ .dequeue = h4_dequeue,
+ .flush = h4_flush,
};
-
+
int h4_init(void)
{
int err = hci_uart_register_proto(&h4p);
+
if (!err)
BT_INFO("HCI H4 protocol initialized");
else
BT_ERR("HCI H4 protocol registration failed");
-
+
return err;
}
git.openpandora.org / pandora-kernel.git / blobdiff