[linux-2.6-block.git] / drivers / usb / mon / usb_mon.h

/*
 * The USB Monitor, inspired by Dave Harding's USBMon.
 *
 * Copyright (C) 2005 Pete Zaitcev (zaitcev@redhat.com)
 */

#ifndef __USB_MON_H
#define __USB_MON_H

#include <linux/list.h>
#include <linux/slab.h>
#include <linux/kref.h>
/* #include <linux/usb.h> */	/* We use struct pointers only in this header */

#define TAG "usbmon"

struct mon_bus {
	struct list_head bus_link;
	spinlock_t lock;
	struct dentry *dent_s;		/* Debugging file */
	struct dentry *dent_t;		/* Text interface file */
	struct usb_bus *u_bus;

	/* Ref */
	int nreaders;			/* Under mon_lock AND mbus->lock */
	struct list_head r_list;	/* Chain of readers (usually one) */
	struct kref ref;		/* Under mon_lock */

	/* Stats */
	unsigned int cnt_events;
	unsigned int cnt_text_lost;
};

/*
 * An instance of a process which opened a file (but can fork later)
 */
struct mon_reader {
	struct list_head r_link;
	struct mon_bus *m_bus;
	void *r_data;		/* Use container_of instead? */

	void (*rnf_submit)(void *data, struct urb *urb);
	void (*rnf_error)(void *data, struct urb *urb, int error);
	void (*rnf_complete)(void *data, struct urb *urb);
};

void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r);
void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r);

/*
 */
extern char mon_dmapeek(unsigned char *dst, dma_addr_t dma_addr, int len);

extern struct mutex mon_lock;

extern struct file_operations mon_fops_text;
extern struct file_operations mon_fops_stat;

#endif /* __USB_MON_H */
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* The USB Monitor, inspired by Dave Harding's USBMon.
da5ca008 PZ	3	*
da5ca008 PZ	4	* Copyright (C) 2005 Pete Zaitcev (zaitcev@redhat.com)
1da177e4 LT	5	*/
	6
	7	#ifndef __USB_MON_H
	8	#define __USB_MON_H
	9
	10	#include <linux/list.h>
	11	#include <linux/slab.h>
	12	#include <linux/kref.h>
	13	/* #include <linux/usb.h> / / We use struct pointers only in this header */
	14
	15	#define TAG "usbmon"
	16
	17	struct mon_bus {
	18	struct list_head bus_link;
	19	spinlock_t lock;
	20	struct dentry dent_s; / Debugging file */
	21	struct dentry dent_t; / Text interface file */
	22	struct usb_bus *u_bus;
	23
	24	/* Ref */
	25	int nreaders; /* Under mon_lock AND mbus->lock */
	26	struct list_head r_list; /* Chain of readers (usually one) */
	27	struct kref ref; /* Under mon_lock */
	28
	29	/* Stats */
5b1c674d	30	unsigned int cnt_events;
1da177e4 LT	31	unsigned int cnt_text_lost;
	32	};
	33
	34	/*
	35	* An instance of a process which opened a file (but can fork later)
	36	*/
	37	struct mon_reader {
	38	struct list_head r_link;
	39	struct mon_bus *m_bus;
	40	void r_data; / Use container_of instead? */
	41
	42	void (rnf_submit)(void data, struct urb *urb);
12e72fea	43	void (rnf_error)(void data, struct urb *urb, int error);
1da177e4 LT	44	void (rnf_complete)(void data, struct urb *urb);
	45	};
	46
	47	void mon_reader_add(struct mon_bus mbus, struct mon_reader r);
	48	void mon_reader_del(struct mon_bus mbus, struct mon_reader r);
	49
02568396 PZ	50	/*
	51	*/
	52	extern char mon_dmapeek(unsigned char *dst, dma_addr_t dma_addr, int len);
	53
4186ecf8	54	extern struct mutex mon_lock;
1da177e4 LT	55
	56	extern struct file_operations mon_fops_text;
	57	extern struct file_operations mon_fops_stat;
	58
	59	#endif /* __USB_MON_H */