1 /* 2 * 3 * Bluetooth HCI UART driver 4 * 5 * Copyright (C) 2000-2001 Qualcomm Incorporated 6 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> 7 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> 8 * 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 */ 25 26 #ifndef N_HCI 27 #define N_HCI 15 28 #endif 29 30 /* Ioctls */ 31 #define HCIUARTSETPROTO _IOW('U', 200, int) 32 #define HCIUARTGETPROTO _IOR('U', 201, int) 33 34 /* UART protocols */ 35 #define HCI_UART_MAX_PROTO 4 36 37 #define HCI_UART_H4 0 38 #define HCI_UART_BCSP 1 39 #define HCI_UART_3WIRE 2 40 #define HCI_UART_H4DS 3 41 42 struct hci_uart; 43 44 struct hci_uart_proto { 45 unsigned int id; 46 int (*open)(struct hci_uart *hu); 47 int (*close)(struct hci_uart *hu); 48 int (*flush)(struct hci_uart *hu); 49 int (*recv)(struct hci_uart *hu, void *data, int len); 50 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb); 51 struct sk_buff *(*dequeue)(struct hci_uart *hu); 52 }; 53 54 struct hci_uart { 55 struct tty_struct *tty; 56 struct hci_dev *hdev; 57 unsigned long flags; 58 59 struct hci_uart_proto *proto; 60 void *priv; 61 62 struct sk_buff *tx_skb; 63 unsigned long tx_state; 64 spinlock_t rx_lock; 65 }; 66 67 /* HCI_UART flag bits */ 68 #define HCI_UART_PROTO_SET 0 69 70 /* TX states */ 71 #define HCI_UART_SENDING 1 72 #define HCI_UART_TX_WAKEUP 2 73 74 int hci_uart_register_proto(struct hci_uart_proto *p); 75 int hci_uart_unregister_proto(struct hci_uart_proto *p); 76 int hci_uart_tx_wakeup(struct hci_uart *hu); 77 78 #ifdef CONFIG_BT_HCIUART_H4 79 int h4_init(void); 80 int h4_deinit(void); 81 #endif 82 83 #ifdef CONFIG_BT_HCIUART_BCSP 84 int bcsp_init(void); 85 int bcsp_deinit(void); 86 #endif 87