-/*
- BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ).
- Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com>
-
- Based on
- hci_h4.c by Maxim Krasnyansky <maxk@qualcomm.com>
- ABCSP by Carl Orsborn <cjo@csr.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.
-*/
-
/*
- * $Id: hci_bcsp.c,v 1.2 2002/09/26 05:05:14 maxk Exp $
+ *
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2002-2003 Fabrizio Gennari <fabrizio.gennari@philips.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 "0.3"
-
#include <linux/config.h>
#include <linux/module.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
+
#include "hci_uart.h"
-#include "hci_bcsp.h"
#ifndef CONFIG_BT_HCIUART_DEBUG
#undef BT_DBG
#define BT_DBG( A... )
#endif
+#define VERSION "0.3"
+
static int txcrc = 1;
static int hciextn = 1;
+#define BCSP_TXWINSIZE 4
+
+#define BCSP_ACK_PKT 0x05
+#define BCSP_LE_PKT 0x06
+
+struct bcsp_struct {
+ struct sk_buff_head unack; /* Unack'ed packets queue */
+ struct sk_buff_head rel; /* Reliable packets queue */
+ struct sk_buff_head unrel; /* Unreliable packets queue */
+
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+ u8 rxseq_txack; /* rxseq == txack. */
+ u8 rxack; /* Last packet sent by us that the peer ack'ed */
+ struct timer_list tbcsp;
+
+ enum {
+ BCSP_W4_PKT_DELIMITER,
+ BCSP_W4_PKT_START,
+ BCSP_W4_BCSP_HDR,
+ BCSP_W4_DATA,
+ BCSP_W4_CRC
+ } rx_state;
+
+ enum {
+ BCSP_ESCSTATE_NOESC,
+ BCSP_ESCSTATE_ESC
+ } rx_esc_state;
+
+ u8 use_crc;
+ u16 message_crc;
+ u8 txack_req; /* Do we need to send ack's to the peer? */
+
+ /* Reliable packet sequence number - used to assign seq to each rel pkt. */
+ u8 msgq_txseq;
+};
+
/* ---- BCSP CRC calculation ---- */
/* Table for calculating CRC for polynomial 0x1021, LSB processed first,
rev |= (crc & 1);
crc = crc >> 1;
}
+
return (rev);
}
static void bcsp_slip_msgdelim(struct sk_buff *skb)
{
const char pkt_delim = 0xc0;
+
memcpy(skb_put(skb, 1), &pkt_delim, 1);
}
spin_unlock_irqrestore(&bcsp->unack.lock, flags);
-
/* We could not send a reliable packet, either because there are
none or because there are too many unack'ed pkts. Did we receive
any packets we have not acknowledged yet ? */
BT_ERR("Peer acked invalid packet");
BT_DBG("Removing %u pkts out of %u, up to seqno %u",
- pkts_to_be_removed, bcsp->unack.qlen, (seqno - 1) & 0x07);
+ pkts_to_be_removed, bcsp->unack.qlen, (seqno - 1) & 0x07);
for (i = 0, skb = ((struct sk_buff *) &bcsp->unack)->next; i < pkts_to_be_removed
&& skb != (struct sk_buff *) &bcsp->unack; i++) {
kfree_skb(skb);
skb = nskb;
}
+
if (bcsp->unack.qlen == 0)
del_timer(&bcsp->tbcsp);
+
spin_unlock_irqrestore(&bcsp->unack.lock, flags);
if (i != pkts_to_be_removed)
hci_recv_frame(bcsp->rx_skb);
}
+
bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
bcsp->rx_skb = NULL;
}
BT_ERR ("Checksum failed: computed %04x received %04x",
bcsp_crc_reverse(bcsp->message_crc),
- (bcsp->rx_skb-> data[bcsp->rx_skb->len - 2] << 8) +
- bcsp->rx_skb->data[bcsp->rx_skb->len - 1]);
+ (bcsp->rx_skb-> data[bcsp->rx_skb->len - 2] << 8) +
+ bcsp->rx_skb->data[bcsp->rx_skb->len - 1]);
kfree_skb(bcsp->rx_skb);
bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
bcsp->rx_count = 4;
bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC;
BCSP_CRC_INIT(bcsp->message_crc);
-
+
/* Do not increment ptr or decrement count
* Allocate packet. Max len of a BCSP pkt=
* 0xFFF (payload) +4 (header) +2 (crc) */
}
static struct hci_uart_proto bcsp = {
- .id = HCI_UART_BCSP,
- .open = bcsp_open,
- .close = bcsp_close,
- .enqueue = bcsp_enqueue,
- .dequeue = bcsp_dequeue,
- .recv = bcsp_recv,
- .flush = bcsp_flush
+ .id = HCI_UART_BCSP,
+ .open = bcsp_open,
+ .close = bcsp_close,
+ .enqueue = bcsp_enqueue,
+ .dequeue = bcsp_dequeue,
+ .recv = bcsp_recv,
+ .flush = bcsp_flush
};
int bcsp_init(void)
{
int err = hci_uart_register_proto(&bcsp);
+
if (!err)
BT_INFO("HCI BCSP protocol initialized");
else
+++ /dev/null
-/*
- BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ).
- Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com>
-
- Based on
- hci_h4.c by Maxim Krasnyansky <maxk@qualcomm.com>
- ABCSP by Carl Orsborn <cjo@csr.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.
-*/
-
-/*
- * $Id: hci_bcsp.h,v 1.2 2002/09/26 05:05:14 maxk Exp $
- */
-
-#ifndef __HCI_BCSP_H__
-#define __HCI_BCSP_H__
-
-#define BCSP_TXWINSIZE 4
-
-#define BCSP_ACK_PKT 0x05
-#define BCSP_LE_PKT 0x06
-
-struct bcsp_struct {
- struct sk_buff_head unack; /* Unack'ed packets queue */
- struct sk_buff_head rel; /* Reliable packets queue */
- struct sk_buff_head unrel; /* Unreliable packets queue */
-
- unsigned long rx_count;
- struct sk_buff *rx_skb;
- u8 rxseq_txack; /* rxseq == txack. */
- u8 rxack; /* Last packet sent by us that the peer ack'ed */
- struct timer_list tbcsp;
-
- enum {
- BCSP_W4_PKT_DELIMITER,
- BCSP_W4_PKT_START,
- BCSP_W4_BCSP_HDR,
- BCSP_W4_DATA,
- BCSP_W4_CRC
- } rx_state;
-
- enum {
- BCSP_ESCSTATE_NOESC,
- BCSP_ESCSTATE_ESC
- } rx_esc_state;
-
- u8 use_crc;
- u16 message_crc;
- u8 txack_req; /* Do we need to send ack's to the peer? */
-
- /* Reliable packet sequence number - used to assign seq to each rel pkt. */
- u8 msgq_txseq;
-};
-
-#endif /* __HCI_BCSP_H__ */
-/*
- 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 <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);
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;
}
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;
}
+++ /dev/null
-/*
- 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.
-*/
-
-/*
- * $Id: hci_h4.h,v 1.2 2002/09/09 01:17:32 maxk Exp $
- */
-
-#ifdef __KERNEL__
-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
-
-#endif /* __KERNEL__ */
-/*
- 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 driver.
*
- * $Id: hci_ldisc.c,v 1.5 2002/10/02 18:37:20 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 "2.2"
#include <linux/config.h>
#include <linux/module.h>
#define BT_DBG( A... )
#endif
+#define VERSION "2.2"
+
static int reset = 0;
static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO];
return -EEXIST;
hup[p->id] = p;
+
return 0;
}
return -EINVAL;
hup[p->id] = NULL;
+
return 0;
}
{
if (id >= HCI_UART_MAX_PROTO)
return NULL;
+
return hup[id];
}
static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type)
{
struct hci_dev *hdev = hu->hdev;
-
+
/* Update HCI stat counters */
switch (pkt_type) {
case HCI_COMMAND_PKT:
static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu)
{
struct sk_buff *skb = hu->tx_skb;
+
if (!skb)
skb = hu->proto->dequeue(hu);
else
hu->tx_skb = NULL;
+
return skb;
}
struct tty_struct *tty = hu->tty;
struct hci_dev *hdev = hu->hdev;
struct sk_buff *skb;
-
+
if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) {
set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
return 0;
while ((skb = hci_uart_dequeue(hu))) {
int len;
-
+
set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
len = tty->driver->write(tty, skb->data, skb->len);
hdev->stat.byte_tx += len;
hu->tx_skb = skb;
break;
}
-
+
hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type);
kfree_skb(skb);
- }
-
+ }
+
if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
goto restart;
/* Nothing to do for UART driver */
set_bit(HCI_RUNNING, &hdev->flags);
+
return 0;
}
hu->proto->enqueue(hu, skb);
hci_uart_tx_wakeup(hu);
+
return 0;
}
{
struct hci_uart *hu;
- if (!hdev) return;
+ if (!hdev)
+ return;
BT_DBG("%s", hdev->name);
BT_ERR("Can't allocate controll structure");
return -ENFILE;
}
+
memset(hu, 0, sizeof(struct hci_uart));
tty->disc_data = hu;
spin_lock_init(&hu->rx_lock);
/* Flush any pending characters in the driver and line discipline. */
+
/* FIXME: why is this needed. Note don't use ldisc_ref here as the
open path is before the ldisc is referencable */
+
if (tty->ldisc.flush_buffer)
tty->ldisc.flush_buffer(tty);
static void hci_uart_tty_receive(struct tty_struct *tty, const __u8 *data, char *flags, int count)
{
struct hci_uart *hu = (void *)tty->disc_data;
-
+
if (!hu || tty != hu->tty)
return;
if (!test_bit(HCI_UART_PROTO_SET, &hu->flags))
return;
-
+
spin_lock(&hu->rx_lock);
hu->proto->recv(hu, (void *) data, count);
hu->hdev->stat.byte_rx += count;
static int hci_uart_set_proto(struct hci_uart *hu, int id)
{
struct hci_uart_proto *p;
- int err;
-
+ int err;
+
p = hci_uart_get_proto(id);
if (!p)
return -EPROTONOSUPPORT;
p->close(hu);
return err;
}
+
return 0;
}
* Return Value: Command dependent
*/
static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
struct hci_uart *hu = (void *)tty->disc_data;
int err = 0;
return err;
}
tty->low_latency = 1;
- } else
+ } else
return -EBUSY;
case HCIUARTGETPROTO:
if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
return hu->proto->id;
return -EUNATCH;
-
+
default:
err = n_tty_ioctl(tty, file, cmd, arg);
break;
/*
* We don't provide read/write/poll interface for user space.
*/
-static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, unsigned char __user *buf, size_t nr)
+static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file,
+ unsigned char __user *buf, size_t nr)
{
return 0;
}
-static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, const unsigned char *data, size_t count)
+
+static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file,
+ const unsigned char *data, size_t count)
{
return 0;
}
-static unsigned int hci_uart_tty_poll(struct tty_struct *tty, struct file *filp, poll_table *wait)
+
+static unsigned int hci_uart_tty_poll(struct tty_struct *tty,
+ struct file *filp, poll_table *wait)
{
return 0;
}
-#ifdef CONFIG_BT_HCIUART_H4
-int h4_init(void);
-int h4_deinit(void);
-#endif
-#ifdef CONFIG_BT_HCIUART_BCSP
-int bcsp_init(void);
-int bcsp_deinit(void);
-#endif
-
static int __init hci_uart_init(void)
{
static struct tty_ldisc hci_uart_ldisc;
/* Register the tty discipline */
memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc));
- hci_uart_ldisc.magic = TTY_LDISC_MAGIC;
- hci_uart_ldisc.name = "n_hci";
- hci_uart_ldisc.open = hci_uart_tty_open;
- hci_uart_ldisc.close = hci_uart_tty_close;
- hci_uart_ldisc.read = hci_uart_tty_read;
- hci_uart_ldisc.write = hci_uart_tty_write;
- hci_uart_ldisc.ioctl = hci_uart_tty_ioctl;
- hci_uart_ldisc.poll = hci_uart_tty_poll;
- hci_uart_ldisc.receive_room= hci_uart_tty_room;
- hci_uart_ldisc.receive_buf = hci_uart_tty_receive;
- hci_uart_ldisc.write_wakeup= hci_uart_tty_wakeup;
- hci_uart_ldisc.owner = THIS_MODULE;
+ hci_uart_ldisc.magic = TTY_LDISC_MAGIC;
+ hci_uart_ldisc.name = "n_hci";
+ hci_uart_ldisc.open = hci_uart_tty_open;
+ hci_uart_ldisc.close = hci_uart_tty_close;
+ hci_uart_ldisc.read = hci_uart_tty_read;
+ hci_uart_ldisc.write = hci_uart_tty_write;
+ hci_uart_ldisc.ioctl = hci_uart_tty_ioctl;
+ hci_uart_ldisc.poll = hci_uart_tty_poll;
+ hci_uart_ldisc.receive_room = hci_uart_tty_room;
+ hci_uart_ldisc.receive_buf = hci_uart_tty_receive;
+ hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup;
+ hci_uart_ldisc.owner = THIS_MODULE;
if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) {
BT_ERR("HCI line discipline registration failed. (%d)", err);
-/*
- 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.
-*/
-
/*
- * $Id: hci_uart.h,v 1.2 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
+ *
*/
-#ifndef N_HCI
+#ifndef N_HCI
#define N_HCI 15
#endif
#define HCI_UART_3WIRE 2
#define HCI_UART_H4DS 3
-#ifdef __KERNEL__
struct hci_uart;
struct hci_uart_proto {
};
struct hci_uart {
- struct tty_struct *tty;
- struct hci_dev *hdev;
- unsigned long flags;
+ struct tty_struct *tty;
+ struct hci_dev *hdev;
+ unsigned long flags;
- struct hci_uart_proto *proto;
- void *priv;
-
- struct sk_buff *tx_skb;
- unsigned long tx_state;
- spinlock_t rx_lock;
+ struct hci_uart_proto *proto;
+ void *priv;
+
+ struct sk_buff *tx_skb;
+ unsigned long tx_state;
+ spinlock_t rx_lock;
};
/* HCI_UART flag bits */
-#define HCI_UART_PROTO_SET 0
+#define HCI_UART_PROTO_SET 0
/* TX states */
-#define HCI_UART_SENDING 1
-#define HCI_UART_TX_WAKEUP 2
+#define HCI_UART_SENDING 1
+#define HCI_UART_TX_WAKEUP 2
int hci_uart_register_proto(struct hci_uart_proto *p);
int hci_uart_unregister_proto(struct hci_uart_proto *p);
int hci_uart_tx_wakeup(struct hci_uart *hu);
-#endif /* __KERNEL__ */
+#ifdef CONFIG_BT_HCIUART_H4
+int h4_init(void);
+int h4_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_BCSP
+int bcsp_init(void);
+int bcsp_deinit(void);
+#endif
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff