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 12
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#define HCI_UART_NOKIA 10
51#define HCI_UART_MRVL 11
52
53#define HCI_UART_RAW_DEVICE 0
54#define HCI_UART_RESET_ON_INIT 1
55#define HCI_UART_CREATE_AMP 2
56#define HCI_UART_INIT_PENDING 3
57#define HCI_UART_EXT_CONFIG 4
58#define HCI_UART_VND_DETECT 5
59
60struct hci_uart;
61struct serdev_device;
62
63struct hci_uart_proto {
64 unsigned int id;
65 const char *name;
66 unsigned int manufacturer;
67 unsigned int init_speed;
68 unsigned int oper_speed;
69 int (*open)(struct hci_uart *hu);
70 int (*close)(struct hci_uart *hu);
71 int (*flush)(struct hci_uart *hu);
72 int (*setup)(struct hci_uart *hu);
73 int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
74 int (*recv)(struct hci_uart *hu, const void *data, int len);
75 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
76 struct sk_buff *(*dequeue)(struct hci_uart *hu);
77};
78
79struct hci_uart {
80 struct tty_struct *tty;
81 struct serdev_device *serdev;
82 struct hci_dev *hdev;
83 unsigned long flags;
84 unsigned long hdev_flags;
85
86 struct work_struct init_ready;
87 struct work_struct write_work;
88
89 const struct hci_uart_proto *proto;
90 struct percpu_rw_semaphore proto_lock; /* Stop work for proto close */
91 void *priv;
92
93 struct sk_buff *tx_skb;
94 unsigned long tx_state;
95
96 unsigned int init_speed;
97 unsigned int oper_speed;
98
99 u8 alignment;
100 u8 padding;
101};
102
103/* HCI_UART proto flag bits */
104#define HCI_UART_PROTO_SET 0
105#define HCI_UART_REGISTERED 1
106#define HCI_UART_PROTO_READY 2
107
108/* TX states */
109#define HCI_UART_SENDING 1
110#define HCI_UART_TX_WAKEUP 2
111
112int hci_uart_register_proto(const struct hci_uart_proto *p);
113int hci_uart_unregister_proto(const struct hci_uart_proto *p);
114int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p);
115void hci_uart_unregister_device(struct hci_uart *hu);
116
117int hci_uart_tx_wakeup(struct hci_uart *hu);
118int hci_uart_init_ready(struct hci_uart *hu);
119void hci_uart_init_work(struct work_struct *work);
120void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
121void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
122void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
123 unsigned int oper_speed);
124
125#ifdef CONFIG_BT_HCIUART_H4
126int h4_init(void);
127int h4_deinit(void);
128
129struct h4_recv_pkt {
130 u8 type; /* Packet type */
131 u8 hlen; /* Header length */
132 u8 loff; /* Data length offset in header */
133 u8 lsize; /* Data length field size */
134 u16 maxlen; /* Max overall packet length */
135 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
136};
137
138#define H4_RECV_ACL \
139 .type = HCI_ACLDATA_PKT, \
140 .hlen = HCI_ACL_HDR_SIZE, \
141 .loff = 2, \
142 .lsize = 2, \
143 .maxlen = HCI_MAX_FRAME_SIZE \
144
145#define H4_RECV_SCO \
146 .type = HCI_SCODATA_PKT, \
147 .hlen = HCI_SCO_HDR_SIZE, \
148 .loff = 2, \
149 .lsize = 1, \
150 .maxlen = HCI_MAX_SCO_SIZE
151
152#define H4_RECV_EVENT \
153 .type = HCI_EVENT_PKT, \
154 .hlen = HCI_EVENT_HDR_SIZE, \
155 .loff = 1, \
156 .lsize = 1, \
157 .maxlen = HCI_MAX_EVENT_SIZE
158
159struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
160 const unsigned char *buffer, int count,
161 const struct h4_recv_pkt *pkts, int pkts_count);
162#endif
163
164#ifdef CONFIG_BT_HCIUART_BCSP
165int bcsp_init(void);
166int bcsp_deinit(void);
167#endif
168
169#ifdef CONFIG_BT_HCIUART_LL
170int ll_init(void);
171int ll_deinit(void);
172#endif
173
174#ifdef CONFIG_BT_HCIUART_ATH3K
175int ath_init(void);
176int ath_deinit(void);
177#endif
178
179#ifdef CONFIG_BT_HCIUART_3WIRE
180int h5_init(void);
181int h5_deinit(void);
182#endif
183
184#ifdef CONFIG_BT_HCIUART_INTEL
185int intel_init(void);
186int intel_deinit(void);
187#endif
188
189#ifdef CONFIG_BT_HCIUART_BCM
190int bcm_init(void);
191int bcm_deinit(void);
192#endif
193
194#ifdef CONFIG_BT_HCIUART_QCA
195int qca_init(void);
196int qca_deinit(void);
197#endif
198
199#ifdef CONFIG_BT_HCIUART_AG6XX
200int ag6xx_init(void);
201int ag6xx_deinit(void);
202#endif
203
204#ifdef CONFIG_BT_HCIUART_MRVL
205int mrvl_init(void);
206int mrvl_deinit(void);
207#endif