| 1 |
1275 |
phoenix |
/*****************************************************************************/
|
| 2 |
|
|
/*
|
| 3 |
|
|
* auerchain.h -- Auerswald PBX/System Telephone chained urb support.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Copyright (C) 2002 Wolfgang Mües (wolfgang@iksw-muees.de)
|
| 6 |
|
|
*
|
| 7 |
|
|
* This program is free software; you can redistribute it and/or modify
|
| 8 |
|
|
* it under the terms of the GNU General Public License as published by
|
| 9 |
|
|
* the Free Software Foundation; either version 2 of the License, or
|
| 10 |
|
|
* (at your option) any later version.
|
| 11 |
|
|
*
|
| 12 |
|
|
* This program is distributed in the hope that it will be useful,
|
| 13 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 14 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 15 |
|
|
* GNU General Public License for more details.
|
| 16 |
|
|
*
|
| 17 |
|
|
* You should have received a copy of the GNU General Public License
|
| 18 |
|
|
* along with this program; if not, write to the Free Software
|
| 19 |
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
| 20 |
|
|
*/
|
| 21 |
|
|
/*****************************************************************************/
|
| 22 |
|
|
|
| 23 |
|
|
/* This module is used to make a FIFO of URBs, to serialize the submit.
|
| 24 |
|
|
* This may be used to serialize control messages, which is not supported
|
| 25 |
|
|
* by the Linux USB subsystem.
|
| 26 |
|
|
*/
|
| 27 |
|
|
|
| 28 |
|
|
#ifndef AUERCHAIN_H
|
| 29 |
|
|
#define AUERCHAIN_H
|
| 30 |
|
|
|
| 31 |
|
|
#include <linux/usb.h>
|
| 32 |
|
|
|
| 33 |
|
|
/* urb chain element */
|
| 34 |
|
|
struct auerchain; /* forward for circular reference */
|
| 35 |
|
|
struct auerchainelement {
|
| 36 |
|
|
struct auerchain *chain; /* pointer to the chain to which this element belongs */
|
| 37 |
|
|
struct urb *urbp; /* pointer to attached urb */
|
| 38 |
|
|
void *context; /* saved URB context */
|
| 39 |
|
|
usb_complete_t complete; /* saved URB completion function */
|
| 40 |
|
|
struct list_head list; /* to include element into a list */
|
| 41 |
|
|
};
|
| 42 |
|
|
|
| 43 |
|
|
/* urb chain */
|
| 44 |
|
|
struct auerchain {
|
| 45 |
|
|
struct auerchainelement *active;/* element which is submitted to urb */
|
| 46 |
|
|
spinlock_t lock; /* protection agains interrupts */
|
| 47 |
|
|
struct list_head waiting_list; /* list of waiting elements */
|
| 48 |
|
|
struct list_head free_list; /* list of available elements */
|
| 49 |
|
|
};
|
| 50 |
|
|
|
| 51 |
|
|
/* urb blocking completion helper struct */
|
| 52 |
|
|
struct auerchain_chs {
|
| 53 |
|
|
wait_queue_head_t wqh; /* wait for completion */
|
| 54 |
|
|
unsigned int done; /* completion flag */
|
| 55 |
|
|
};
|
| 56 |
|
|
|
| 57 |
|
|
|
| 58 |
|
|
/* Function prototypes */
|
| 59 |
|
|
int auerchain_submit_urb_list(struct auerchain *acp, struct urb *urb,
|
| 60 |
|
|
int early);
|
| 61 |
|
|
|
| 62 |
|
|
int auerchain_submit_urb(struct auerchain *acp, struct urb *urb);
|
| 63 |
|
|
|
| 64 |
|
|
int auerchain_unlink_urb(struct auerchain *acp, struct urb *urb);
|
| 65 |
|
|
|
| 66 |
|
|
void auerchain_unlink_all(struct auerchain *acp);
|
| 67 |
|
|
|
| 68 |
|
|
void auerchain_free(struct auerchain *acp);
|
| 69 |
|
|
|
| 70 |
|
|
void auerchain_init(struct auerchain *acp);
|
| 71 |
|
|
|
| 72 |
|
|
int auerchain_setup(struct auerchain *acp, unsigned int numElements);
|
| 73 |
|
|
|
| 74 |
|
|
int auerchain_control_msg(struct auerchain *acp, struct usb_device *dev,
|
| 75 |
|
|
unsigned int pipe, __u8 request,
|
| 76 |
|
|
__u8 requesttype, __u16 value, __u16 index,
|
| 77 |
|
|
void *data, __u16 size, int timeout);
|
| 78 |
|
|
|
| 79 |
|
|
#endif /* AUERCHAIN_H */
|
