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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Marcel Holtmann0372a662005-10-28 19:20:45 +02002 *
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 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 */
25
Marcel Holtmann0372a662005-10-28 19:20:45 +020026#ifndef N_HCI
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#define N_HCI 15
28#endif
29
30/* Ioctls */
Marcel Holtmannd2158742007-05-09 09:15:35 +020031#define HCIUARTSETPROTO _IOW('U', 200, int)
32#define HCIUARTGETPROTO _IOR('U', 201, int)
33#define HCIUARTGETDEVICE _IOR('U', 202, int)
Johan Hedberg63c7d092010-07-12 11:37:04 -030034#define HCIUARTSETFLAGS _IOW('U', 203, int)
35#define HCIUARTGETFLAGS _IOR('U', 204, int)
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37/* UART protocols */
Marcel Holtmanne9a2dd22015-04-04 16:13:03 -070038#define HCI_UART_MAX_PROTO 8
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40#define HCI_UART_H4 0
41#define HCI_UART_BCSP 1
42#define HCI_UART_3WIRE 2
43#define HCI_UART_H4DS 3
Ohad Ben-Cohen166d2f62007-10-20 13:42:36 +020044#define HCI_UART_LL 4
Suraj Sumangalab3190df2010-07-19 12:34:07 +053045#define HCI_UART_ATH3K 5
Marcel Holtmann16e38872015-04-04 16:13:02 -070046#define HCI_UART_INTEL 6
Marcel Holtmanne9a2dd22015-04-04 16:13:03 -070047#define HCI_UART_BCM 7
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Johan Hedberg63c7d092010-07-12 11:37:04 -030049#define HCI_UART_RAW_DEVICE 0
Marcel Holtmanna55e1f32012-02-24 17:12:24 +010050#define HCI_UART_RESET_ON_INIT 1
Marcel Holtmann8a7a3fd2012-02-24 17:09:38 +010051#define HCI_UART_CREATE_AMP 2
Johan Hedberg9f2aee82012-07-16 16:12:11 +030052#define HCI_UART_INIT_PENDING 3
Marcel Holtmann6afd04a2014-07-11 07:12:58 +020053#define HCI_UART_EXT_CONFIG 4
Marcel Holtmannfb2ce8d2015-04-04 16:13:01 -070054#define HCI_UART_VND_DETECT 5
Johan Hedberg63c7d092010-07-12 11:37:04 -030055
Linus Torvalds1da177e2005-04-16 15:20:36 -070056struct hci_uart;
57
58struct hci_uart_proto {
59 unsigned int id;
Marcel Holtmann7c40fb82015-04-04 22:27:34 -070060 const char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 int (*open)(struct hci_uart *hu);
62 int (*close)(struct hci_uart *hu);
63 int (*flush)(struct hci_uart *hu);
Marcel Holtmann6ae4fdd2015-04-05 22:52:17 -070064 int (*setup)(struct hci_uart *hu);
Marcel Holtmann9d1c40e2015-04-04 20:59:41 -070065 int (*recv)(struct hci_uart *hu, const void *data, int len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
67 struct sk_buff *(*dequeue)(struct hci_uart *hu);
68};
69
70struct hci_uart {
Marcel Holtmann0372a662005-10-28 19:20:45 +020071 struct tty_struct *tty;
72 struct hci_dev *hdev;
73 unsigned long flags;
Johan Hedberg63c7d092010-07-12 11:37:04 -030074 unsigned long hdev_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Johan Hedberg9f2aee82012-07-16 16:12:11 +030076 struct work_struct init_ready;
Felipe Balbida64c272014-04-23 09:58:26 -050077 struct work_struct write_work;
Johan Hedberg9f2aee82012-07-16 16:12:11 +030078
Marcel Holtmann4ee7ef12015-04-04 22:11:43 -070079 const struct hci_uart_proto *proto;
Marcel Holtmann0372a662005-10-28 19:20:45 +020080 void *priv;
81
82 struct sk_buff *tx_skb;
83 unsigned long tx_state;
84 spinlock_t rx_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070085};
86
Johan Hedberg63c7d092010-07-12 11:37:04 -030087/* HCI_UART proto flag bits */
Marcel Holtmann0372a662005-10-28 19:20:45 +020088#define HCI_UART_PROTO_SET 0
Johan Hedberg9f2aee82012-07-16 16:12:11 +030089#define HCI_UART_REGISTERED 1
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91/* TX states */
Marcel Holtmann0372a662005-10-28 19:20:45 +020092#define HCI_UART_SENDING 1
93#define HCI_UART_TX_WAKEUP 2
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
Marcel Holtmann4ee7ef12015-04-04 22:11:43 -070095int hci_uart_register_proto(const struct hci_uart_proto *p);
96int hci_uart_unregister_proto(const struct hci_uart_proto *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097int hci_uart_tx_wakeup(struct hci_uart *hu);
Johan Hedberg9f2aee82012-07-16 16:12:11 +030098int hci_uart_init_ready(struct hci_uart *hu);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Marcel Holtmann0372a662005-10-28 19:20:45 +0200100#ifdef CONFIG_BT_HCIUART_H4
101int h4_init(void);
102int h4_deinit(void);
Marcel Holtmanne1a38d72015-04-04 21:59:24 -0700103
Marcel Holtmann79b8df92015-04-05 23:44:59 -0700104struct 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
Marcel Holtmanne1a38d72015-04-04 21:59:24 -0700134struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
Marcel Holtmann79b8df92015-04-05 23:44:59 -0700135 const unsigned char *buffer, int count,
136 const struct h4_recv_pkt *pkts, int pkts_count);
Marcel Holtmann0372a662005-10-28 19:20:45 +0200137#endif
138
139#ifdef CONFIG_BT_HCIUART_BCSP
140int bcsp_init(void);
141int bcsp_deinit(void);
142#endif
Ohad Ben-Cohen166d2f62007-10-20 13:42:36 +0200143
144#ifdef CONFIG_BT_HCIUART_LL
145int ll_init(void);
146int ll_deinit(void);
147#endif
Suraj Sumangalab3190df2010-07-19 12:34:07 +0530148
149#ifdef CONFIG_BT_HCIUART_ATH3K
150int ath_init(void);
151int ath_deinit(void);
152#endif
Johan Hedberg7dec65c2012-07-16 16:12:02 +0300153
154#ifdef CONFIG_BT_HCIUART_3WIRE
155int h5_init(void);
156int h5_deinit(void);
157#endif
Marcel Holtmann16e38872015-04-04 16:13:02 -0700158
159#ifdef CONFIG_BT_HCIUART_INTEL
160int intel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
161#endif
Marcel Holtmannbdd88182015-04-05 22:52:18 -0700162
163#ifdef CONFIG_BT_HCIUART_BCM
164int bcm_init(void);
165int bcm_deinit(void);
166#endif