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1da177e4 LT |
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 | |
0915e886 MH |
34 | #define HCI_CSR 0x08 |
35 | #define HCI_SNIFFER 0x10 | |
1da177e4 | 36 | #define HCI_BCM92035 0x20 |
0915e886 | 37 | #define HCI_BROKEN_ISOC 0x40 |
da1f5198 | 38 | #define HCI_WRONG_SCO_MTU 0x80 |
1da177e4 LT |
39 | |
40 | #define HCI_MAX_IFACE_NUM 3 | |
41 | ||
42 | #define HCI_MAX_BULK_TX 4 | |
43 | #define HCI_MAX_BULK_RX 1 | |
44 | ||
45 | #define HCI_MAX_ISOC_RX 2 | |
46 | #define HCI_MAX_ISOC_TX 2 | |
47 | ||
48 | #define HCI_MAX_ISOC_FRAMES 10 | |
49 | ||
50 | struct _urb_queue { | |
51 | struct list_head head; | |
52 | spinlock_t lock; | |
53 | }; | |
54 | ||
55 | struct _urb { | |
56 | struct list_head list; | |
57 | struct _urb_queue *queue; | |
58 | int type; | |
59 | void *priv; | |
60 | struct urb urb; | |
61 | }; | |
62 | ||
1da177e4 LT |
63 | static inline void _urb_queue_init(struct _urb_queue *q) |
64 | { | |
65 | INIT_LIST_HEAD(&q->head); | |
66 | spin_lock_init(&q->lock); | |
67 | } | |
68 | ||
69 | static inline void _urb_queue_head(struct _urb_queue *q, struct _urb *_urb) | |
70 | { | |
71 | unsigned long flags; | |
72 | spin_lock_irqsave(&q->lock, flags); | |
026672d0 PM |
73 | /* _urb_unlink needs to know which spinlock to use, thus mb(). */ |
74 | _urb->queue = q; mb(); list_add(&_urb->list, &q->head); | |
1da177e4 LT |
75 | spin_unlock_irqrestore(&q->lock, flags); |
76 | } | |
77 | ||
78 | static inline void _urb_queue_tail(struct _urb_queue *q, struct _urb *_urb) | |
79 | { | |
80 | unsigned long flags; | |
81 | spin_lock_irqsave(&q->lock, flags); | |
026672d0 PM |
82 | /* _urb_unlink needs to know which spinlock to use, thus mb(). */ |
83 | _urb->queue = q; mb(); list_add_tail(&_urb->list, &q->head); | |
1da177e4 LT |
84 | spin_unlock_irqrestore(&q->lock, flags); |
85 | } | |
86 | ||
87 | static inline void _urb_unlink(struct _urb *_urb) | |
88 | { | |
026672d0 | 89 | struct _urb_queue *q; |
1da177e4 | 90 | unsigned long flags; |
026672d0 PM |
91 | |
92 | mb(); | |
93 | q = _urb->queue; | |
94 | /* If q is NULL, it will die at easy-to-debug NULL pointer dereference. | |
95 | No need to BUG(). */ | |
96 | spin_lock_irqsave(&q->lock, flags); | |
97 | list_del(&_urb->list); _urb->queue = NULL; | |
98 | spin_unlock_irqrestore(&q->lock, flags); | |
1da177e4 LT |
99 | } |
100 | ||
101 | struct hci_usb { | |
102 | struct hci_dev *hdev; | |
103 | ||
104 | unsigned long state; | |
babf4d42 | 105 | |
1da177e4 | 106 | struct usb_device *udev; |
babf4d42 | 107 | |
1da177e4 LT |
108 | struct usb_host_endpoint *bulk_in_ep; |
109 | struct usb_host_endpoint *bulk_out_ep; | |
110 | struct usb_host_endpoint *intr_in_ep; | |
111 | ||
112 | struct usb_interface *isoc_iface; | |
113 | struct usb_host_endpoint *isoc_out_ep; | |
114 | struct usb_host_endpoint *isoc_in_ep; | |
115 | ||
116 | __u8 ctrl_req; | |
117 | ||
118 | struct sk_buff_head transmit_q[4]; | |
1da177e4 LT |
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 |