1 /*
2 HCI USB driver for Linux Bluetooth protocol stack (BlueZ)
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
5
6 Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 /*
27 * $Id: hci_usb.h,v 1.2 2002/03/18 19:10:04 maxk Exp $
28 */
29
30 #ifdef __KERNEL__
31
32 /* Class, SubClass, and Protocol codes that describe a Bluetooth device */
33 #define HCI_DEV_CLASS 0xe0 /* Wireless class */
34 #define HCI_DEV_SUBCLASS 0x01 /* RF subclass */
35 #define HCI_DEV_PROTOCOL 0x01 /* Bluetooth programming protocol */
36
37 #define HCI_CTRL_REQ 0x20
38 #define HCI_DIGI_REQ 0x40
39
40 #define HCI_IGNORE 0x01
41 #define HCI_RESET 0x02
42 #define HCI_DIGIANSWER 0x04
43 #define HCI_BROKEN_ISOC 0x08
44
45 #define HCI_MAX_IFACE_NUM 3
46
47 #define HCI_MAX_BULK_TX 4
48 #define HCI_MAX_BULK_RX 1
49
50 #define HCI_MAX_ISOC_RX 2
51 #define HCI_MAX_ISOC_TX 2
52
53 #define HCI_MAX_ISOC_FRAMES 10
54
55 struct _urb_queue {
56 struct list_head head;
57 spinlock_t lock;
58 };
59
60 struct _urb {
61 struct list_head list;
62 struct _urb_queue *queue;
63 int type;
64 void *priv;
65 struct urb urb;
66 };
67
68 struct _urb *_urb_alloc(int isoc, int gfp);
69
_urb_free(struct _urb * _urb)70 static inline void _urb_free(struct _urb *_urb)
71 {
72 kfree(_urb);
73 }
74
_urb_queue_init(struct _urb_queue * q)75 static inline void _urb_queue_init(struct _urb_queue *q)
76 {
77 INIT_LIST_HEAD(&q->head);
78 spin_lock_init(&q->lock);
79 }
80
_urb_queue_head(struct _urb_queue * q,struct _urb * _urb)81 static inline void _urb_queue_head(struct _urb_queue *q, struct _urb *_urb)
82 {
83 unsigned long flags;
84 spin_lock_irqsave(&q->lock, flags);
85 list_add(&_urb->list, &q->head); _urb->queue = q;
86 spin_unlock_irqrestore(&q->lock, flags);
87 }
88
_urb_queue_tail(struct _urb_queue * q,struct _urb * _urb)89 static inline void _urb_queue_tail(struct _urb_queue *q, struct _urb *_urb)
90 {
91 unsigned long flags;
92 spin_lock_irqsave(&q->lock, flags);
93 list_add_tail(&_urb->list, &q->head); _urb->queue = q;
94 spin_unlock_irqrestore(&q->lock, flags);
95 }
96
_urb_unlink(struct _urb * _urb)97 static inline void _urb_unlink(struct _urb *_urb)
98 {
99 struct _urb_queue *q = _urb->queue;
100 unsigned long flags;
101 if (q) {
102 spin_lock_irqsave(&q->lock, flags);
103 list_del(&_urb->list); _urb->queue = NULL;
104 spin_unlock_irqrestore(&q->lock, flags);
105 }
106 }
107
108 struct _urb *_urb_dequeue(struct _urb_queue *q);
109
110 #ifndef container_of
111 #define container_of(ptr, type, member) ({ \
112 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
113 (type *)( (char *)__mptr - offsetof(type,member) );})
114 #endif
115
116 struct hci_usb {
117 struct hci_dev hdev;
118
119 unsigned long state;
120
121 struct usb_device *udev;
122
123 struct usb_endpoint_descriptor *bulk_in_ep;
124 struct usb_endpoint_descriptor *bulk_out_ep;
125 struct usb_endpoint_descriptor *intr_in_ep;
126
127 struct usb_interface *isoc_iface;
128 struct usb_endpoint_descriptor *isoc_out_ep;
129 struct usb_endpoint_descriptor *isoc_in_ep;
130
131 __u8 ctrl_req;
132
133 struct sk_buff_head transmit_q[4];
134 struct sk_buff *reassembly[4]; // Reassembly buffers
135
136 rwlock_t completion_lock;
137
138 atomic_t pending_tx[4]; // Number of pending requests
139 struct _urb_queue pending_q[4]; // Pending requests
140 struct _urb_queue completed_q[4]; // Completed requests
141 };
142
143 /* States */
144 #define HCI_USB_TX_PROCESS 1
145 #define HCI_USB_TX_WAKEUP 2
146
147 #endif /* __KERNEL__ */
148