130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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HCI USB driver for Linux Bluetooth protocol stack (BlueZ)
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Copyright (C) 2000-2001 Qualcomm Incorporated
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Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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/* Class, SubClass, and Protocol codes that describe a Bluetooth device */
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#define HCI_DEV_CLASS 0xe0 /* Wireless class */
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#define HCI_DEV_SUBCLASS 0x01 /* RF subclass */
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#define HCI_DEV_PROTOCOL 0x01 /* Bluetooth programming protocol */
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#define HCI_IGNORE 0x01
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#define HCI_RESET 0x02
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#define HCI_DIGIANSWER 0x04
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#define HCI_CSR 0x08
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#define HCI_SNIFFER 0x10
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#define HCI_BCM92035 0x20
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#define HCI_BROKEN_ISOC 0x40
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#define HCI_WRONG_SCO_MTU 0x80
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#define HCI_MAX_IFACE_NUM 3
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#define HCI_MAX_BULK_TX 4
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#define HCI_MAX_BULK_RX 1
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#define HCI_MAX_ISOC_RX 2
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#define HCI_MAX_ISOC_TX 2
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#define HCI_MAX_ISOC_FRAMES 10
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struct _urb_queue {
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struct list_head head;
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spinlock_t lock;
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};
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struct _urb {
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struct list_head list;
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struct _urb_queue *queue;
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int type;
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void *priv;
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struct urb urb;
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};
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static inline void _urb_queue_init(struct _urb_queue *q)
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{
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INIT_LIST_HEAD(&q->head);
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spin_lock_init(&q->lock);
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}
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static inline void _urb_queue_head(struct _urb_queue *q, struct _urb *_urb)
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{
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unsigned long flags;
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spin_lock_irqsave(&q->lock, flags);
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/* _urb_unlink needs to know which spinlock to use, thus smp_mb(). */
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_urb->queue = q; smp_mb(); list_add(&_urb->list, &q->head);
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spin_unlock_irqrestore(&q->lock, flags);
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}
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static inline void _urb_queue_tail(struct _urb_queue *q, struct _urb *_urb)
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{
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unsigned long flags;
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spin_lock_irqsave(&q->lock, flags);
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/* _urb_unlink needs to know which spinlock to use, thus smp_mb(). */
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_urb->queue = q; smp_mb(); list_add_tail(&_urb->list, &q->head);
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spin_unlock_irqrestore(&q->lock, flags);
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}
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static inline void _urb_unlink(struct _urb *_urb)
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{
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struct _urb_queue *q;
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unsigned long flags;
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smp_mb();
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q = _urb->queue;
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/* If q is NULL, it will die at easy-to-debug NULL pointer dereference.
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No need to BUG(). */
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spin_lock_irqsave(&q->lock, flags);
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list_del(&_urb->list); _urb->queue = NULL;
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spin_unlock_irqrestore(&q->lock, flags);
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}
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struct hci_usb {
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struct hci_dev *hdev;
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unsigned long state;
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struct usb_device *udev;
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struct usb_host_endpoint *bulk_in_ep;
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struct usb_host_endpoint *bulk_out_ep;
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struct usb_host_endpoint *intr_in_ep;
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struct usb_interface *isoc_iface;
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struct usb_host_endpoint *isoc_out_ep;
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struct usb_host_endpoint *isoc_in_ep;
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__u8 ctrl_req;
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struct sk_buff_head transmit_q[4];
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rwlock_t completion_lock;
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atomic_t pending_tx[4]; /* Number of pending requests */
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struct _urb_queue pending_q[4]; /* Pending requests */
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struct _urb_queue completed_q[4]; /* Completed requests */
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};
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/* States */
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#define HCI_USB_TX_PROCESS 1
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#define HCI_USB_TX_WAKEUP 2
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