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
56struct hci_uart;
57
58struct hci_uart_proto {
59	unsigned int id;
60	const char *name;
61	int (*open)(struct hci_uart *hu);
62	int (*close)(struct hci_uart *hu);
63	int (*flush)(struct hci_uart *hu);
64	int (*setup)(struct hci_uart *hu);
65	int (*recv)(struct hci_uart *hu, const void *data, int len);
66	int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
67	struct sk_buff *(*dequeue)(struct hci_uart *hu);
68};
69
70struct hci_uart {
71	struct tty_struct	*tty;
72	struct hci_dev		*hdev;
73	unsigned long		flags;
74	unsigned long		hdev_flags;
75
76	struct work_struct	init_ready;
77	struct work_struct	write_work;
78
79	const struct hci_uart_proto *proto;
80	void			*priv;
81
82	struct sk_buff		*tx_skb;
83	unsigned long		tx_state;
84	spinlock_t		rx_lock;
85};
86
87/* HCI_UART proto flag bits */
88#define HCI_UART_PROTO_SET	0
89#define HCI_UART_REGISTERED	1
90
91/* TX states  */
92#define HCI_UART_SENDING	1
93#define HCI_UART_TX_WAKEUP	2
94
95int hci_uart_register_proto(const struct hci_uart_proto *p);
96int hci_uart_unregister_proto(const struct hci_uart_proto *p);
97int hci_uart_tx_wakeup(struct hci_uart *hu);
98int hci_uart_init_ready(struct hci_uart *hu);
99
100#ifdef CONFIG_BT_HCIUART_H4
101int h4_init(void);
102int h4_deinit(void);
103
104struct h4_recv_pkt {
105	u8  type;	/* Packet type */
106	u8  hlen;	/* Header length */
107	u8  loff;	/* Data length offset in header */
108	u8  lsize;	/* Data length field size */
109	u16 maxlen;	/* Max overall packet length */
110	int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
111};
112
113#define H4_RECV_ACL \
114	.type = HCI_ACLDATA_PKT, \
115	.hlen = HCI_ACL_HDR_SIZE, \
116	.loff = 2, \
117	.lsize = 2, \
118	.maxlen = HCI_MAX_FRAME_SIZE \
119
120#define H4_RECV_SCO \
121	.type = HCI_SCODATA_PKT, \
122	.hlen = HCI_SCO_HDR_SIZE, \
123	.loff = 2, \
124	.lsize = 1, \
125	.maxlen = HCI_MAX_SCO_SIZE
126
127#define H4_RECV_EVENT \
128	.type = HCI_EVENT_PKT, \
129	.hlen = HCI_EVENT_HDR_SIZE, \
130	.loff = 1, \
131	.lsize = 1, \
132	.maxlen = HCI_MAX_EVENT_SIZE
133
134struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
135			    const unsigned char *buffer, int count,
136			    const struct h4_recv_pkt *pkts, int pkts_count);
137#endif
138
139#ifdef CONFIG_BT_HCIUART_BCSP
140int bcsp_init(void);
141int bcsp_deinit(void);
142#endif
143
144#ifdef CONFIG_BT_HCIUART_LL
145int ll_init(void);
146int ll_deinit(void);
147#endif
148
149#ifdef CONFIG_BT_HCIUART_ATH3K
150int ath_init(void);
151int ath_deinit(void);
152#endif
153
154#ifdef CONFIG_BT_HCIUART_3WIRE
155int h5_init(void);
156int h5_deinit(void);
157#endif
158
159#ifdef CONFIG_BT_HCIUART_BCM
160int bcm_init(void);
161int bcm_deinit(void);
162#endif
163