tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/* Class, SubClass, and Protocol codes that describe a Bluetooth device */
27#define HCI_DEV_CLASS 0xe0 /* Wireless class */
28#define HCI_DEV_SUBCLASS 0x01 /* RF subclass */
29#define HCI_DEV_PROTOCOL 0x01 /* Bluetooth programming protocol */
30
31#define HCI_IGNORE 0x01
32#define HCI_RESET 0x02
33#define HCI_DIGIANSWER 0x04
34#define HCI_CSR 0x08
35#define HCI_SNIFFER 0x10
36#define HCI_BCM92035 0x20
37#define HCI_BROKEN_ISOC 0x40
38
39#define HCI_MAX_IFACE_NUM 3
40
41#define HCI_MAX_BULK_TX 4
42#define HCI_MAX_BULK_RX 1
43
44#define HCI_MAX_ISOC_RX 2
45#define HCI_MAX_ISOC_TX 2
46
47#define HCI_MAX_ISOC_FRAMES 10
48
49struct _urb_queue {
50 struct list_head head;
51 spinlock_t lock;
52};
53
54struct _urb {
55 struct list_head list;
56 struct _urb_queue *queue;
57 int type;
58 void *priv;
59 struct urb urb;
60};
61
62static inline void _urb_free(struct _urb *_urb)
63{
64 kfree(_urb);
65}
66
67static inline void _urb_queue_init(struct _urb_queue *q)
68{
69 INIT_LIST_HEAD(&q->head);
70 spin_lock_init(&q->lock);
71}
72
73static inline void _urb_queue_head(struct _urb_queue *q, struct _urb *_urb)
74{
75 unsigned long flags;
76 spin_lock_irqsave(&q->lock, flags);
77 list_add(&_urb->list, &q->head); _urb->queue = q;
78 spin_unlock_irqrestore(&q->lock, flags);
79}
80
81static inline void _urb_queue_tail(struct _urb_queue *q, struct _urb *_urb)
82{
83 unsigned long flags;
84 spin_lock_irqsave(&q->lock, flags);
85 list_add_tail(&_urb->list, &q->head); _urb->queue = q;
86 spin_unlock_irqrestore(&q->lock, flags);
87}
88
89static inline void _urb_unlink(struct _urb *_urb)
90{
91 struct _urb_queue *q = _urb->queue;
92 unsigned long flags;
93 if (q) {
94 spin_lock_irqsave(&q->lock, flags);
95 list_del(&_urb->list); _urb->queue = NULL;
96 spin_unlock_irqrestore(&q->lock, flags);
97 }
98}
99
100struct hci_usb {
101 struct hci_dev *hdev;
102
103 unsigned long state;
104
105 struct usb_device *udev;
106
107 struct usb_host_endpoint *bulk_in_ep;
108 struct usb_host_endpoint *bulk_out_ep;
109 struct usb_host_endpoint *intr_in_ep;
110
111 struct usb_interface *isoc_iface;
112 struct usb_host_endpoint *isoc_out_ep;
113 struct usb_host_endpoint *isoc_in_ep;
114
115 __u8 ctrl_req;
116
117 struct sk_buff_head transmit_q[4];
118 struct sk_buff *reassembly[4]; /* Reassembly buffers */
119
120 rwlock_t completion_lock;
121
122 atomic_t pending_tx[4]; /* Number of pending requests */
123 struct _urb_queue pending_q[4]; /* Pending requests */
124 struct _urb_queue completed_q[4]; /* Completed requests */
125};
126
127/* States */
128#define HCI_USB_TX_PROCESS 1
129#define HCI_USB_TX_WAKEUP 2