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 #define HCIUARTGETDEVICE _IOR('U', 202, int) 34 #define HCIUARTSETFLAGS _IOW('U', 203, int) 35 #define HCIUARTGETFLAGS _IOR('U', 204, int) 36 37 /* UART protocols */ 38 #define HCI_UART_MAX_PROTO 8 39 40 #define HCI_UART_H4 0 41 #define HCI_UART_BCSP 1 42 #define HCI_UART_3WIRE 2 43 #define HCI_UART_H4DS 3 44 #define HCI_UART_LL 4 45 #define HCI_UART_ATH3K 5 46 #define HCI_UART_INTEL 6 47 #define HCI_UART_BCM 7 48 49 #define HCI_UART_RAW_DEVICE 0 50 #define HCI_UART_RESET_ON_INIT 1 51 #define HCI_UART_CREATE_AMP 2 52 #define HCI_UART_INIT_PENDING 3 53 #define HCI_UART_EXT_CONFIG 4 54 #define HCI_UART_VND_DETECT 5 55 56 struct hci_uart; 57 58 struct hci_uart_proto { 59 unsigned int id; 60 const char *name; 61 unsigned int init_speed; 62 unsigned int oper_speed; 63 int (*open)(struct hci_uart *hu); 64 int (*close)(struct hci_uart *hu); 65 int (*flush)(struct hci_uart *hu); 66 int (*setup)(struct hci_uart *hu); 67 int (*set_baudrate)(struct hci_uart *hu, unsigned int speed); 68 int (*recv)(struct hci_uart *hu, const void *data, int len); 69 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb); 70 struct sk_buff *(*dequeue)(struct hci_uart *hu); 71 }; 72 73 struct hci_uart { 74 struct tty_struct *tty; 75 struct hci_dev *hdev; 76 unsigned long flags; 77 unsigned long hdev_flags; 78 79 struct work_struct init_ready; 80 struct work_struct write_work; 81 82 const struct hci_uart_proto *proto; 83 void *priv; 84 85 struct sk_buff *tx_skb; 86 unsigned long tx_state; 87 spinlock_t rx_lock; 88 89 unsigned int init_speed; 90 unsigned int oper_speed; 91 }; 92 93 /* HCI_UART proto flag bits */ 94 #define HCI_UART_PROTO_SET 0 95 #define HCI_UART_REGISTERED 1 96 97 /* TX states */ 98 #define HCI_UART_SENDING 1 99 #define HCI_UART_TX_WAKEUP 2 100 101 int hci_uart_register_proto(const struct hci_uart_proto *p); 102 int hci_uart_unregister_proto(const struct hci_uart_proto *p); 103 int hci_uart_tx_wakeup(struct hci_uart *hu); 104 int hci_uart_init_ready(struct hci_uart *hu); 105 void hci_uart_init_tty(struct hci_uart *hu); 106 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed); 107 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable); 108 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed, 109 unsigned int oper_speed); 110 111 #ifdef CONFIG_BT_HCIUART_H4 112 int h4_init(void); 113 int h4_deinit(void); 114 115 struct h4_recv_pkt { 116 u8 type; /* Packet type */ 117 u8 hlen; /* Header length */ 118 u8 loff; /* Data length offset in header */ 119 u8 lsize; /* Data length field size */ 120 u16 maxlen; /* Max overall packet length */ 121 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb); 122 }; 123 124 #define H4_RECV_ACL \ 125 .type = HCI_ACLDATA_PKT, \ 126 .hlen = HCI_ACL_HDR_SIZE, \ 127 .loff = 2, \ 128 .lsize = 2, \ 129 .maxlen = HCI_MAX_FRAME_SIZE \ 130 131 #define H4_RECV_SCO \ 132 .type = HCI_SCODATA_PKT, \ 133 .hlen = HCI_SCO_HDR_SIZE, \ 134 .loff = 2, \ 135 .lsize = 1, \ 136 .maxlen = HCI_MAX_SCO_SIZE 137 138 #define H4_RECV_EVENT \ 139 .type = HCI_EVENT_PKT, \ 140 .hlen = HCI_EVENT_HDR_SIZE, \ 141 .loff = 1, \ 142 .lsize = 1, \ 143 .maxlen = HCI_MAX_EVENT_SIZE 144 145 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb, 146 const unsigned char *buffer, int count, 147 const struct h4_recv_pkt *pkts, int pkts_count); 148 #endif 149 150 #ifdef CONFIG_BT_HCIUART_BCSP 151 int bcsp_init(void); 152 int bcsp_deinit(void); 153 #endif 154 155 #ifdef CONFIG_BT_HCIUART_LL 156 int ll_init(void); 157 int ll_deinit(void); 158 #endif 159 160 #ifdef CONFIG_BT_HCIUART_ATH3K 161 int ath_init(void); 162 int ath_deinit(void); 163 #endif 164 165 #ifdef CONFIG_BT_HCIUART_3WIRE 166 int h5_init(void); 167 int h5_deinit(void); 168 #endif 169 170 #ifdef CONFIG_BT_HCIUART_BCM 171 int bcm_init(void); 172 int bcm_deinit(void); 173 #endif 174