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 12 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 #define HCI_UART_QCA 8 49 #define HCI_UART_AG6XX 9 50 #define HCI_UART_NOKIA 10 51 #define HCI_UART_MRVL 11 52 53 #define HCI_UART_RAW_DEVICE 0 54 #define HCI_UART_RESET_ON_INIT 1 55 #define HCI_UART_CREATE_AMP 2 56 #define HCI_UART_INIT_PENDING 3 57 #define HCI_UART_EXT_CONFIG 4 58 #define HCI_UART_VND_DETECT 5 59 60 struct hci_uart; 61 struct serdev_device; 62 63 struct hci_uart_proto { 64 unsigned int id; 65 const char *name; 66 unsigned int manufacturer; 67 unsigned int init_speed; 68 unsigned int oper_speed; 69 int (*open)(struct hci_uart *hu); 70 int (*close)(struct hci_uart *hu); 71 int (*flush)(struct hci_uart *hu); 72 int (*setup)(struct hci_uart *hu); 73 int (*set_baudrate)(struct hci_uart *hu, unsigned int speed); 74 int (*recv)(struct hci_uart *hu, const void *data, int len); 75 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb); 76 struct sk_buff *(*dequeue)(struct hci_uart *hu); 77 }; 78 79 struct hci_uart { 80 struct tty_struct *tty; 81 struct serdev_device *serdev; 82 struct hci_dev *hdev; 83 unsigned long flags; 84 unsigned long hdev_flags; 85 86 struct work_struct init_ready; 87 struct work_struct write_work; 88 89 const struct hci_uart_proto *proto; 90 struct percpu_rw_semaphore proto_lock; /* Stop work for proto close */ 91 void *priv; 92 93 struct sk_buff *tx_skb; 94 unsigned long tx_state; 95 96 unsigned int init_speed; 97 unsigned int oper_speed; 98 99 u8 alignment; 100 u8 padding; 101 }; 102 103 /* HCI_UART proto flag bits */ 104 #define HCI_UART_PROTO_SET 0 105 #define HCI_UART_REGISTERED 1 106 #define HCI_UART_PROTO_READY 2 107 108 /* TX states */ 109 #define HCI_UART_SENDING 1 110 #define HCI_UART_TX_WAKEUP 2 111 112 int hci_uart_register_proto(const struct hci_uart_proto *p); 113 int hci_uart_unregister_proto(const struct hci_uart_proto *p); 114 int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p); 115 void hci_uart_unregister_device(struct hci_uart *hu); 116 117 int hci_uart_tx_wakeup(struct hci_uart *hu); 118 int hci_uart_init_ready(struct hci_uart *hu); 119 void hci_uart_init_work(struct work_struct *work); 120 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed); 121 bool hci_uart_has_flow_control(struct hci_uart *hu); 122 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable); 123 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed, 124 unsigned int oper_speed); 125 126 #ifdef CONFIG_BT_HCIUART_H4 127 int h4_init(void); 128 int h4_deinit(void); 129 130 struct h4_recv_pkt { 131 u8 type; /* Packet type */ 132 u8 hlen; /* Header length */ 133 u8 loff; /* Data length offset in header */ 134 u8 lsize; /* Data length field size */ 135 u16 maxlen; /* Max overall packet length */ 136 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb); 137 }; 138 139 #define H4_RECV_ACL \ 140 .type = HCI_ACLDATA_PKT, \ 141 .hlen = HCI_ACL_HDR_SIZE, \ 142 .loff = 2, \ 143 .lsize = 2, \ 144 .maxlen = HCI_MAX_FRAME_SIZE \ 145 146 #define H4_RECV_SCO \ 147 .type = HCI_SCODATA_PKT, \ 148 .hlen = HCI_SCO_HDR_SIZE, \ 149 .loff = 2, \ 150 .lsize = 1, \ 151 .maxlen = HCI_MAX_SCO_SIZE 152 153 #define H4_RECV_EVENT \ 154 .type = HCI_EVENT_PKT, \ 155 .hlen = HCI_EVENT_HDR_SIZE, \ 156 .loff = 1, \ 157 .lsize = 1, \ 158 .maxlen = HCI_MAX_EVENT_SIZE 159 160 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb, 161 const unsigned char *buffer, int count, 162 const struct h4_recv_pkt *pkts, int pkts_count); 163 #endif 164 165 #ifdef CONFIG_BT_HCIUART_BCSP 166 int bcsp_init(void); 167 int bcsp_deinit(void); 168 #endif 169 170 #ifdef CONFIG_BT_HCIUART_LL 171 int ll_init(void); 172 int ll_deinit(void); 173 #endif 174 175 #ifdef CONFIG_BT_HCIUART_ATH3K 176 int ath_init(void); 177 int ath_deinit(void); 178 #endif 179 180 #ifdef CONFIG_BT_HCIUART_3WIRE 181 int h5_init(void); 182 int h5_deinit(void); 183 #endif 184 185 #ifdef CONFIG_BT_HCIUART_INTEL 186 int intel_init(void); 187 int intel_deinit(void); 188 #endif 189 190 #ifdef CONFIG_BT_HCIUART_BCM 191 int bcm_init(void); 192 int bcm_deinit(void); 193 #endif 194 195 #ifdef CONFIG_BT_HCIUART_QCA 196 int qca_init(void); 197 int qca_deinit(void); 198 #endif 199 200 #ifdef CONFIG_BT_HCIUART_AG6XX 201 int ag6xx_init(void); 202 int ag6xx_deinit(void); 203 #endif 204 205 #ifdef CONFIG_BT_HCIUART_MRVL 206 int mrvl_init(void); 207 int mrvl_deinit(void); 208 #endif 209