summaryrefslogtreecommitdiffstats
path: root/drivers/bluetooth/hci_uart.h
blob: d8cf005e3c5deeae0bfc5f7246a02d88526cd5e5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *
 *  Bluetooth HCI UART driver
 *
 *  Copyright (C) 2000-2001  Qualcomm Incorporated
 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>
 *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org>
 */

#ifndef N_HCI
#define N_HCI	15
#endif

/* Ioctls */
#define HCIUARTSETPROTO		_IOW('U', 200, int)
#define HCIUARTGETPROTO		_IOR('U', 201, int)
#define HCIUARTGETDEVICE	_IOR('U', 202, int)
#define HCIUARTSETFLAGS		_IOW('U', 203, int)
#define HCIUARTGETFLAGS		_IOR('U', 204, int)

/* UART protocols */
#define HCI_UART_MAX_PROTO	12

#define HCI_UART_H4	0
#define HCI_UART_BCSP	1
#define HCI_UART_3WIRE	2
#define HCI_UART_H4DS	3
#define HCI_UART_LL	4
#define HCI_UART_ATH3K	5
#define HCI_UART_INTEL	6
#define HCI_UART_BCM	7
#define HCI_UART_QCA	8
#define HCI_UART_AG6XX	9
#define HCI_UART_NOKIA	10
#define HCI_UART_MRVL	11

#define HCI_UART_RAW_DEVICE	0
#define HCI_UART_RESET_ON_INIT	1
#define HCI_UART_CREATE_AMP	2
#define HCI_UART_INIT_PENDING	3
#define HCI_UART_EXT_CONFIG	4
#define HCI_UART_VND_DETECT	5

struct hci_uart;
struct serdev_device;

struct hci_uart_proto {
	unsigned int id;
	const char *name;
	unsigned int manufacturer;
	unsigned int init_speed;
	unsigned int oper_speed;
	int (*open)(struct hci_uart *hu);
	int (*close)(struct hci_uart *hu);
	int (*flush)(struct hci_uart *hu);
	int (*setup)(struct hci_uart *hu);
	int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
	int (*recv)(struct hci_uart *hu, const void *data, int len);
	int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
	struct sk_buff *(*dequeue)(struct hci_uart *hu);
};

struct hci_uart {
	struct tty_struct	*tty;
	struct serdev_device	*serdev;
	struct hci_dev		*hdev;
	unsigned long		flags;
	unsigned long		hdev_flags;

	struct work_struct	init_ready;
	struct work_struct	write_work;

	const struct hci_uart_proto *proto;
	struct percpu_rw_semaphore proto_lock;	/* Stop work for proto close */
	void			*priv;

	struct sk_buff		*tx_skb;
	unsigned long		tx_state;

	unsigned int init_speed;
	unsigned int oper_speed;

	u8			alignment;
	u8			padding;
};

/* HCI_UART proto flag bits */
#define HCI_UART_PROTO_SET	0
#define HCI_UART_REGISTERED	1
#define HCI_UART_PROTO_READY	2

/* TX states  */
#define HCI_UART_SENDING	1
#define HCI_UART_TX_WAKEUP	2

int hci_uart_register_proto(const struct hci_uart_proto *p);
int hci_uart_unregister_proto(const struct hci_uart_proto *p);
int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p);
void hci_uart_unregister_device(struct hci_uart *hu);

int hci_uart_tx_wakeup(struct hci_uart *hu);
int hci_uart_init_ready(struct hci_uart *hu);
void hci_uart_init_work(struct work_struct *work);
void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
			 unsigned int oper_speed);

#ifdef CONFIG_BT_HCIUART_H4
int h4_init(void);
int h4_deinit(void);

struct h4_recv_pkt {
	u8  type;	/* Packet type */
	u8  hlen;	/* Header length */
	u8  loff;	/* Data length offset in header */
	u8  lsize;	/* Data length field size */
	u16 maxlen;	/* Max overall packet length */
	int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
};

#define H4_RECV_ACL \
	.type = HCI_ACLDATA_PKT, \
	.hlen = HCI_ACL_HDR_SIZE, \
	.loff = 2, \
	.lsize = 2, \
	.maxlen = HCI_MAX_FRAME_SIZE \

#define H4_RECV_SCO \
	.type = HCI_SCODATA_PKT, \
	.hlen = HCI_SCO_HDR_SIZE, \
	.loff = 2, \
	.lsize = 1, \
	.maxlen = HCI_MAX_SCO_SIZE

#define H4_RECV_EVENT \
	.type = HCI_EVENT_PKT, \
	.hlen = HCI_EVENT_HDR_SIZE, \
	.loff = 1, \
	.lsize = 1, \
	.maxlen = HCI_MAX_EVENT_SIZE

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

#ifdef CONFIG_BT_HCIUART_BCSP
int bcsp_init(void);
int bcsp_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_LL
int ll_init(void);
int ll_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_ATH3K
int ath_init(void);
int ath_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_3WIRE
int h5_init(void);
int h5_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_INTEL
int intel_init(void);
int intel_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_BCM
int bcm_init(void);
int bcm_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_QCA
int qca_init(void);
int qca_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_AG6XX
int ag6xx_init(void);
int ag6xx_deinit(void);
#endif

#ifdef CONFIG_BT_HCIUART_MRVL
int mrvl_init(void);
int mrvl_deinit(void);
#endif