| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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_SNIFFER 0x08 |
| 35 | #define HCI_BROKEN_ISOC 0x10 |
| 36 | #define HCI_BCM92035 0x20 |
| 37 | |
| 38 | #define HCI_MAX_IFACE_NUM 3 |
| 39 | |
| 40 | #define HCI_MAX_BULK_TX 4 |
| 41 | #define HCI_MAX_BULK_RX 1 |
| 42 | |
| 43 | #define HCI_MAX_ISOC_RX 2 |
| 44 | #define HCI_MAX_ISOC_TX 2 |
| 45 | |
| 46 | #define HCI_MAX_ISOC_FRAMES 10 |
| 47 | |
| 48 | struct _urb_queue { |
| 49 | struct list_head head; |
| 50 | spinlock_t lock; |
| 51 | }; |
| 52 | |
| 53 | struct _urb { |
| 54 | struct list_head list; |
| 55 | struct _urb_queue *queue; |
| 56 | int type; |
| 57 | void *priv; |
| 58 | struct urb urb; |
| 59 | }; |
| 60 | |
| 61 | static inline void _urb_free(struct _urb *_urb) |
| 62 | { |
| 63 | kfree(_urb); |
| 64 | } |
| 65 | |
| 66 | static inline void _urb_queue_init(struct _urb_queue *q) |
| 67 | { |
| 68 | INIT_LIST_HEAD(&q->head); |
| 69 | spin_lock_init(&q->lock); |
| 70 | } |
| 71 | |
| 72 | static inline void _urb_queue_head(struct _urb_queue *q, struct _urb *_urb) |
| 73 | { |
| 74 | unsigned long flags; |
| 75 | spin_lock_irqsave(&q->lock, flags); |
| 76 | list_add(&_urb->list, &q->head); _urb->queue = q; |
| 77 | spin_unlock_irqrestore(&q->lock, flags); |
| 78 | } |
| 79 | |
| 80 | static inline void _urb_queue_tail(struct _urb_queue *q, struct _urb *_urb) |
| 81 | { |
| 82 | unsigned long flags; |
| 83 | spin_lock_irqsave(&q->lock, flags); |
| 84 | list_add_tail(&_urb->list, &q->head); _urb->queue = q; |
| 85 | spin_unlock_irqrestore(&q->lock, flags); |
| 86 | } |
| 87 | |
| 88 | static inline void _urb_unlink(struct _urb *_urb) |
| 89 | { |
| 90 | struct _urb_queue *q = _urb->queue; |
| 91 | unsigned long flags; |
| 92 | if (q) { |
| 93 | spin_lock_irqsave(&q->lock, flags); |
| 94 | list_del(&_urb->list); _urb->queue = NULL; |
| 95 | spin_unlock_irqrestore(&q->lock, flags); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | struct hci_usb { |
| 100 | struct hci_dev *hdev; |
| 101 | |
| 102 | unsigned long state; |
| 103 | |
| 104 | struct usb_device *udev; |
| 105 | |
| 106 | struct usb_host_endpoint *bulk_in_ep; |
| 107 | struct usb_host_endpoint *bulk_out_ep; |
| 108 | struct usb_host_endpoint *intr_in_ep; |
| 109 | |
| 110 | struct usb_interface *isoc_iface; |
| 111 | struct usb_host_endpoint *isoc_out_ep; |
| 112 | struct usb_host_endpoint *isoc_in_ep; |
| 113 | |
| 114 | __u8 ctrl_req; |
| 115 | |
| 116 | struct sk_buff_head transmit_q[4]; |
| 117 | struct sk_buff *reassembly[4]; /* Reassembly buffers */ |
| 118 | |
| 119 | rwlock_t completion_lock; |
| 120 | |
| 121 | atomic_t pending_tx[4]; /* Number of pending requests */ |
| 122 | struct _urb_queue pending_q[4]; /* Pending requests */ |
| 123 | struct _urb_queue completed_q[4]; /* Completed requests */ |
| 124 | }; |
| 125 | |
| 126 | /* States */ |
| 127 | #define HCI_USB_TX_PROCESS 1 |
| 128 | #define HCI_USB_TX_WAKEUP 2 |