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