CoCalc -- hci

GitHub Repository: torvalds/linux
Path: blob/master/drivers/bluetooth/hci_uart.h
²⁶³⁷⁸ views
1
/* SPDX-License-Identifier: GPL-2.0-or-later */
2
/*
3
 *
4
 *  Bluetooth HCI UART driver
5
 *
6
 *  Copyright (C) 2000-2001  Qualcomm Incorporated
7
 *  Copyright (C) 2002-2003  Maxim Krasnyansky <[email protected]>
8
 *  Copyright (C) 2004-2005  Marcel Holtmann <[email protected]>
9
 */
10

11
#ifndef N_HCI
12
#define N_HCI	15
13
#endif
14

15
/* Ioctls */
16
#define HCIUARTSETPROTO		_IOW('U', 200, int)
17
#define HCIUARTGETPROTO		_IOR('U', 201, int)
18
#define HCIUARTGETDEVICE	_IOR('U', 202, int)
19
#define HCIUARTSETFLAGS		_IOW('U', 203, int)
20
#define HCIUARTGETFLAGS		_IOR('U', 204, int)
21

22
/* UART protocols */
23
#define HCI_UART_MAX_PROTO	13
24

25
#define HCI_UART_H4	0
26
#define HCI_UART_BCSP	1
27
#define HCI_UART_3WIRE	2
28
#define HCI_UART_H4DS	3
29
#define HCI_UART_LL	4
30
#define HCI_UART_ATH3K	5
31
#define HCI_UART_INTEL	6
32
#define HCI_UART_BCM	7
33
#define HCI_UART_QCA	8
34
#define HCI_UART_AG6XX	9
35
#define HCI_UART_NOKIA	10
36
#define HCI_UART_MRVL	11
37
#define HCI_UART_AML	12
38

39
#define HCI_UART_RAW_DEVICE	0
40
#define HCI_UART_RESET_ON_INIT	1
41
#define HCI_UART_INIT_PENDING	3
42
#define HCI_UART_EXT_CONFIG	4
43
#define HCI_UART_VND_DETECT	5
44

45
struct hci_uart;
46
struct serdev_device;
47

48
struct hci_uart_proto {
49
	unsigned int id;
50
	const char *name;
51
	unsigned int manufacturer;
52
	unsigned int init_speed;
53
	unsigned int oper_speed;
54
	int (*open)(struct hci_uart *hu);
55
	int (*close)(struct hci_uart *hu);
56
	int (*flush)(struct hci_uart *hu);
57
	int (*setup)(struct hci_uart *hu);
58
	int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
59
	int (*recv)(struct hci_uart *hu, const void *data, int len);
60
	int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
61
	struct sk_buff *(*dequeue)(struct hci_uart *hu);
62
};
63

64
struct hci_uart {
65
	struct tty_struct	*tty;
66
	struct serdev_device	*serdev;
67
	struct hci_dev		*hdev;
68
	unsigned long		flags;
69
	unsigned long		hdev_flags;
70

71
	struct work_struct	init_ready;
72
	struct work_struct	write_work;
73

74
	const struct hci_uart_proto *proto;
75
	struct percpu_rw_semaphore proto_lock;	/* Stop work for proto close */
76
	void			*priv;
77

78
	struct sk_buff		*tx_skb;
79
	unsigned long		tx_state;
80

81
	unsigned int init_speed;
82
	unsigned int oper_speed;
83

84
	u8			alignment;
85
	u8			padding;
86
};
87

88
/* HCI_UART proto flag bits */
89
#define HCI_UART_PROTO_SET		0
90
#define HCI_UART_REGISTERED		1
91
#define HCI_UART_PROTO_READY		2
92
#define HCI_UART_NO_SUSPEND_NOTIFIER	3
93
#define HCI_UART_PROTO_INIT		4
94

95
/* TX states  */
96
#define HCI_UART_SENDING	1
97
#define HCI_UART_TX_WAKEUP	2
98

99
int hci_uart_register_proto(const struct hci_uart_proto *p);
100
int hci_uart_unregister_proto(const struct hci_uart_proto *p);
101

102
int hci_uart_register_device_priv(struct hci_uart *hu,
103
				  const struct hci_uart_proto *p,
104
				  int sizeof_priv);
105

106
static inline int hci_uart_register_device(struct hci_uart *hu,
107
					   const struct hci_uart_proto *p)
108
{
109
	return hci_uart_register_device_priv(hu, p, 0);
110
}
111

112
void hci_uart_unregister_device(struct hci_uart *hu);
113

114
int hci_uart_tx_wakeup(struct hci_uart *hu);
115
int hci_uart_wait_until_sent(struct hci_uart *hu);
116
int hci_uart_init_ready(struct hci_uart *hu);
117
void hci_uart_init_work(struct work_struct *work);
118
void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
119
bool hci_uart_has_flow_control(struct hci_uart *hu);
120
void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
121
void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
122
			 unsigned int oper_speed);
123

124
#ifdef CONFIG_BT_HCIUART_H4
125
int h4_init(void);
126
int h4_deinit(void);
127

128
struct h4_recv_pkt {
129
	u8  type;	/* Packet type */
130
	u8  hlen;	/* Header length */
131
	u8  loff;	/* Data length offset in header */
132
	u8  lsize;	/* Data length field size */
133
	u16 maxlen;	/* Max overall packet length */
134
	int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
135
};
136

137
#define H4_RECV_ACL \
138
	.type = HCI_ACLDATA_PKT, \
139
	.hlen = HCI_ACL_HDR_SIZE, \
140
	.loff = 2, \
141
	.lsize = 2, \
142
	.maxlen = HCI_MAX_FRAME_SIZE \
143

144
#define H4_RECV_SCO \
145
	.type = HCI_SCODATA_PKT, \
146
	.hlen = HCI_SCO_HDR_SIZE, \
147
	.loff = 2, \
148
	.lsize = 1, \
149
	.maxlen = HCI_MAX_SCO_SIZE
150

151
#define H4_RECV_EVENT \
152
	.type = HCI_EVENT_PKT, \
153
	.hlen = HCI_EVENT_HDR_SIZE, \
154
	.loff = 1, \
155
	.lsize = 1, \
156
	.maxlen = HCI_MAX_EVENT_SIZE
157

158
#define H4_RECV_ISO \
159
	.type = HCI_ISODATA_PKT, \
160
	.hlen = HCI_ISO_HDR_SIZE, \
161
	.loff = 2, \
162
	.lsize = 2, \
163
	.maxlen = HCI_MAX_FRAME_SIZE \
164

165
struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
166
			    const unsigned char *buffer, int count,
167
			    const struct h4_recv_pkt *pkts, int pkts_count);
168
#endif
169

170
#ifdef CONFIG_BT_HCIUART_BCSP
171
int bcsp_init(void);
172
int bcsp_deinit(void);
173
#endif
174

175
#ifdef CONFIG_BT_HCIUART_LL
176
int ll_init(void);
177
int ll_deinit(void);
178
#endif
179

180
#ifdef CONFIG_BT_HCIUART_ATH3K
181
int ath_init(void);
182
int ath_deinit(void);
183
#endif
184

185
#ifdef CONFIG_BT_HCIUART_3WIRE
186
int h5_init(void);
187
int h5_deinit(void);
188
#endif
189

190
#ifdef CONFIG_BT_HCIUART_INTEL
191
int intel_init(void);
192
int intel_deinit(void);
193
#endif
194

195
#ifdef CONFIG_BT_HCIUART_BCM
196
int bcm_init(void);
197
int bcm_deinit(void);
198
#endif
199

200
#ifdef CONFIG_BT_HCIUART_QCA
201
int qca_init(void);
202
int qca_deinit(void);
203
#endif
204

205
#ifdef CONFIG_BT_HCIUART_AG6XX
206
int ag6xx_init(void);
207
int ag6xx_deinit(void);
208
#endif
209

210
#ifdef CONFIG_BT_HCIUART_MRVL
211
int mrvl_init(void);
212
int mrvl_deinit(void);
213
#endif
214

215
#ifdef CONFIG_BT_HCIUART_AML
216
int aml_init(void);
217
int aml_deinit(void);
218
#endif
219

220
Product

Resources

Company
