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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 <maxk@qualcomm.com>
8 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
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 12
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
38#define HCI_UART_RAW_DEVICE 0
39#define HCI_UART_RESET_ON_INIT 1
40#define HCI_UART_CREATE_AMP 2
41#define HCI_UART_INIT_PENDING 3
42#define HCI_UART_EXT_CONFIG 4
43#define HCI_UART_VND_DETECT 5
44
45struct hci_uart;
46struct serdev_device;
47
48struct 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
64struct 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
94/* TX states */
95#define HCI_UART_SENDING 1
96#define HCI_UART_TX_WAKEUP 2
97
98int hci_uart_register_proto(const struct hci_uart_proto *p);
99int hci_uart_unregister_proto(const struct hci_uart_proto *p);
100int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p);
101void hci_uart_unregister_device(struct hci_uart *hu);
102
103int hci_uart_tx_wakeup(struct hci_uart *hu);
104int hci_uart_wait_until_sent(struct hci_uart *hu);
105int hci_uart_init_ready(struct hci_uart *hu);
106void hci_uart_init_work(struct work_struct *work);
107void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
108bool hci_uart_has_flow_control(struct hci_uart *hu);
109void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
110void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
111 unsigned int oper_speed);
112
113#ifdef CONFIG_BT_HCIUART_H4
114int h4_init(void);
115int h4_deinit(void);
116
117struct h4_recv_pkt {
118 u8 type; /* Packet type */
119 u8 hlen; /* Header length */
120 u8 loff; /* Data length offset in header */
121 u8 lsize; /* Data length field size */
122 u16 maxlen; /* Max overall packet length */
123 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
124};
125
126#define H4_RECV_ACL \
127 .type = HCI_ACLDATA_PKT, \
128 .hlen = HCI_ACL_HDR_SIZE, \
129 .loff = 2, \
130 .lsize = 2, \
131 .maxlen = HCI_MAX_FRAME_SIZE \
132
133#define H4_RECV_SCO \
134 .type = HCI_SCODATA_PKT, \
135 .hlen = HCI_SCO_HDR_SIZE, \
136 .loff = 2, \
137 .lsize = 1, \
138 .maxlen = HCI_MAX_SCO_SIZE
139
140#define H4_RECV_EVENT \
141 .type = HCI_EVENT_PKT, \
142 .hlen = HCI_EVENT_HDR_SIZE, \
143 .loff = 1, \
144 .lsize = 1, \
145 .maxlen = HCI_MAX_EVENT_SIZE
146
147#define H4_RECV_ISO \
148 .type = HCI_ISODATA_PKT, \
149 .hlen = HCI_ISO_HDR_SIZE, \
150 .loff = 2, \
151 .lsize = 2, \
152 .maxlen = HCI_MAX_FRAME_SIZE \
153
154struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
155 const unsigned char *buffer, int count,
156 const struct h4_recv_pkt *pkts, int pkts_count);
157#endif
158
159#ifdef CONFIG_BT_HCIUART_BCSP
160int bcsp_init(void);
161int bcsp_deinit(void);
162#endif
163
164#ifdef CONFIG_BT_HCIUART_LL
165int ll_init(void);
166int ll_deinit(void);
167#endif
168
169#ifdef CONFIG_BT_HCIUART_ATH3K
170int ath_init(void);
171int ath_deinit(void);
172#endif
173
174#ifdef CONFIG_BT_HCIUART_3WIRE
175int h5_init(void);
176int h5_deinit(void);
177#endif
178
179#ifdef CONFIG_BT_HCIUART_INTEL
180int intel_init(void);
181int intel_deinit(void);
182#endif
183
184#ifdef CONFIG_BT_HCIUART_BCM
185int bcm_init(void);
186int bcm_deinit(void);
187#endif
188
189#ifdef CONFIG_BT_HCIUART_QCA
190int qca_init(void);
191int qca_deinit(void);
192#endif
193
194#ifdef CONFIG_BT_HCIUART_AG6XX
195int ag6xx_init(void);
196int ag6xx_deinit(void);
197#endif
198
199#ifdef CONFIG_BT_HCIUART_MRVL
200int mrvl_init(void);
201int mrvl_deinit(void);
202#endif
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 6
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
47#define HCI_UART_RAW_DEVICE 0
48
49struct hci_uart;
50
51struct hci_uart_proto {
52 unsigned int id;
53 int (*open)(struct hci_uart *hu);
54 int (*close)(struct hci_uart *hu);
55 int (*flush)(struct hci_uart *hu);
56 int (*recv)(struct hci_uart *hu, void *data, int len);
57 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
58 struct sk_buff *(*dequeue)(struct hci_uart *hu);
59};
60
61struct hci_uart {
62 struct tty_struct *tty;
63 struct hci_dev *hdev;
64 unsigned long flags;
65 unsigned long hdev_flags;
66
67 struct hci_uart_proto *proto;
68 void *priv;
69
70 struct sk_buff *tx_skb;
71 unsigned long tx_state;
72 spinlock_t rx_lock;
73};
74
75/* HCI_UART proto flag bits */
76#define HCI_UART_PROTO_SET 0
77
78/* TX states */
79#define HCI_UART_SENDING 1
80#define HCI_UART_TX_WAKEUP 2
81
82int hci_uart_register_proto(struct hci_uart_proto *p);
83int hci_uart_unregister_proto(struct hci_uart_proto *p);
84int hci_uart_tx_wakeup(struct hci_uart *hu);
85
86#ifdef CONFIG_BT_HCIUART_H4
87int h4_init(void);
88int h4_deinit(void);
89#endif
90
91#ifdef CONFIG_BT_HCIUART_BCSP
92int bcsp_init(void);
93int bcsp_deinit(void);
94#endif
95
96#ifdef CONFIG_BT_HCIUART_LL
97int ll_init(void);
98int ll_deinit(void);
99#endif
100
101#ifdef CONFIG_BT_HCIUART_ATH3K
102int ath_init(void);
103int ath_deinit(void);
104#endif