-/*
- 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 "2.1"
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
+
#include "hci_uart.h"
#ifndef CONFIG_BT_HCIUART_DEBUG
#undef BT_DBG
#define BT_DBG( A... )
-#undef BT_DMP
-#define BT_DMP( A... )
#endif
+#define VERSION "2.2"
+
+static int reset = 0;
+
static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO];
int hci_uart_register_proto(struct hci_uart_proto *p)
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, 0, skb->data, skb->len);
+ len = tty->driver->write(tty, skb->data, skb->len);
hdev->stat.byte_tx += len;
skb_pull(skb, len);
hu->tx_skb = skb;
break;
}
-
- hci_uart_tx_complete(hu, skb->pkt_type);
+
+ 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;
}
}
/* Flush any pending characters in the driver and discipline. */
- if (tty->ldisc.flush_buffer)
- tty->ldisc.flush_buffer(tty);
-
- if (tty->driver->flush_buffer)
+ tty_ldisc_flush(tty);
+ if (tty->driver && tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
hu = (struct hci_uart *) hdev->driver_data;
tty = hu->tty;
- BT_DBG("%s: type %d len %d", hdev->name, skb->pkt_type, skb->len);
+ BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len);
hu->proto->enqueue(hu, skb);
hci_uart_tx_wakeup(hu);
+
return 0;
}
static void hci_uart_destruct(struct hci_dev *hdev)
{
- struct hci_uart *hu;
-
- if (!hdev) return;
+ if (!hdev)
+ return;
BT_DBG("%s", hdev->name);
-
- hu = (struct hci_uart *) hdev->driver_data;
- kfree(hu);
+ kfree(hdev->driver_data);
}
/* ------ LDISC part ------ */
if (hu)
return -EEXIST;
- if (!(hu = kmalloc(sizeof(struct hci_uart), GFP_KERNEL))) {
- BT_ERR("Can't allocate controll structure");
+ if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) {
+ BT_ERR("Can't allocate control structure");
return -ENFILE;
}
- memset(hu, 0, sizeof(struct hci_uart));
tty->disc_data = hu;
hu->tty = tty;
+ tty->receive_room = 65536;
spin_lock_init(&hu->rx_lock);
- /* Flush any pending characters in the driver and line discipline */
+ /* 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);
- if (tty->driver->flush_buffer)
+ if (tty->driver && tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
return 0;
hci_uart_tx_wakeup(hu);
}
-/* hci_uart_tty_room()
- *
- * Callback function from tty driver. Return the amount of
- * space left in the receiver's buffer to decide if remote
- * transmitter is to be throttled.
- *
- * Arguments: tty pointer to associated tty instance data
- * Return Value: number of bytes left in receive buffer
- */
-static int hci_uart_tty_room (struct tty_struct *tty)
-{
- return 65536;
-}
-
/* hci_uart_tty_receive()
*
* Called by tty low level driver when receive data is
*
* Return Value: None
*/
-static void hci_uart_tty_receive(struct tty_struct *tty, const __u8 *data, char *flags, int count)
+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;
spin_unlock(&hu->rx_lock);
- if (test_and_clear_bit(TTY_THROTTLED,&tty->flags) && tty->driver->unthrottle)
+ if (test_and_clear_bit(TTY_THROTTLED, &tty->flags) &&
+ tty->driver->unthrottle)
tty->driver->unthrottle(tty);
}
hdev->destruct = hci_uart_destruct;
hdev->owner = THIS_MODULE;
-
+
+ if (reset)
+ set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
+
if (hci_register_dev(hdev) < 0) {
BT_ERR("Can't register HCI device");
hci_free_dev(hdev);
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 __user *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_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);
#endif
/* Release tty registration of line discipline */
- if ((err = tty_register_ldisc(N_HCI, NULL)))
+ if ((err = tty_unregister_ldisc(N_HCI)))
BT_ERR("Can't unregister HCI line discipline (%d)", err);
}
module_init(hci_uart_init);
module_exit(hci_uart_exit);
-MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>");
+module_param(reset, bool, 0644);
+MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
+
+MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff