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