Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * The USB Monitor, inspired by Dave Harding's USBMon. | |
da5ca008 PZ |
3 | * |
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; | |
6f23ee1f PZ |
20 | struct usb_bus *u_bus; |
21 | ||
22 | int text_inited; | |
ce7cd137 | 23 | int bin_inited; |
1da177e4 LT |
24 | struct dentry *dent_s; /* Debugging file */ |
25 | struct dentry *dent_t; /* Text interface file */ | |
f1c9e30b | 26 | struct dentry *dent_u; /* Second text interface file */ |
ce7cd137 | 27 | struct device *classdev; /* Device in usbmon class */ |
1da177e4 LT |
28 | |
29 | /* Ref */ | |
30 | int nreaders; /* Under mon_lock AND mbus->lock */ | |
31 | struct list_head r_list; /* Chain of readers (usually one) */ | |
32 | struct kref ref; /* Under mon_lock */ | |
33 | ||
34 | /* Stats */ | |
5b1c674d | 35 | unsigned int cnt_events; |
1da177e4 LT |
36 | unsigned int cnt_text_lost; |
37 | }; | |
38 | ||
39 | /* | |
40 | * An instance of a process which opened a file (but can fork later) | |
41 | */ | |
42 | struct mon_reader { | |
43 | struct list_head r_link; | |
44 | struct mon_bus *m_bus; | |
45 | void *r_data; /* Use container_of instead? */ | |
46 | ||
47 | void (*rnf_submit)(void *data, struct urb *urb); | |
12e72fea | 48 | void (*rnf_error)(void *data, struct urb *urb, int error); |
1da177e4 LT |
49 | void (*rnf_complete)(void *data, struct urb *urb); |
50 | }; | |
51 | ||
52 | void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r); | |
53 | void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r); | |
54 | ||
6f23ee1f PZ |
55 | struct mon_bus *mon_bus_lookup(unsigned int num); |
56 | ||
ce7cd137 | 57 | int /*bool*/ mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus); |
6f23ee1f | 58 | void mon_text_del(struct mon_bus *mbus); |
ce7cd137 PZ |
59 | int /*bool*/ mon_bin_add(struct mon_bus *mbus, const struct usb_bus *ubus); |
60 | void mon_bin_del(struct mon_bus *mbus); | |
6f23ee1f PZ |
61 | |
62 | int __init mon_text_init(void); | |
21641e3f | 63 | void mon_text_exit(void); |
6f23ee1f | 64 | int __init mon_bin_init(void); |
21641e3f | 65 | void mon_bin_exit(void); |
6f23ee1f | 66 | |
02568396 | 67 | /* |
6f23ee1f PZ |
68 | * DMA interface. |
69 | * | |
70 | * XXX The vectored side needs a serious re-thinking. Abstracting vectors, | |
71 | * like in Paolo's original patch, produces a double pkmap. We need an idea. | |
72 | */ | |
02568396 PZ |
73 | extern char mon_dmapeek(unsigned char *dst, dma_addr_t dma_addr, int len); |
74 | ||
6f23ee1f PZ |
75 | struct mon_reader_bin; |
76 | extern void mon_dmapeek_vec(const struct mon_reader_bin *rp, | |
77 | unsigned int offset, dma_addr_t dma_addr, unsigned int len); | |
78 | extern unsigned int mon_copy_to_buff(const struct mon_reader_bin *rp, | |
79 | unsigned int offset, const unsigned char *from, unsigned int len); | |
80 | ||
81 | /* | |
82 | */ | |
4186ecf8 | 83 | extern struct mutex mon_lock; |
1da177e4 | 84 | |
066202dd | 85 | extern const struct file_operations mon_fops_stat; |
1da177e4 | 86 | |
ecb658d3 PZ |
87 | extern struct mon_bus mon_bus0; /* Only for redundant checks */ |
88 | ||
1da177e4 | 89 | #endif /* __USB_MON_H */ |