This source file includes following definitions.
- is_kmmio_active
- __printf
- kmmio_handler
- mmiotrace_ioremap
- mmiotrace_iounmap
- __printf
1
2 #ifndef _LINUX_MMIOTRACE_H
3 #define _LINUX_MMIOTRACE_H
4
5 #include <linux/types.h>
6 #include <linux/list.h>
7
8 struct kmmio_probe;
9 struct pt_regs;
10
11 typedef void (*kmmio_pre_handler_t)(struct kmmio_probe *,
12 struct pt_regs *, unsigned long addr);
13 typedef void (*kmmio_post_handler_t)(struct kmmio_probe *,
14 unsigned long condition, struct pt_regs *);
15
16 struct kmmio_probe {
17
18 struct list_head list;
19
20 unsigned long addr;
21
22 unsigned long len;
23
24 kmmio_pre_handler_t pre_handler;
25
26 kmmio_post_handler_t post_handler;
27 void *private;
28 };
29
30 extern unsigned int kmmio_count;
31
32 extern int register_kmmio_probe(struct kmmio_probe *p);
33 extern void unregister_kmmio_probe(struct kmmio_probe *p);
34 extern int kmmio_init(void);
35 extern void kmmio_cleanup(void);
36
37 #ifdef CONFIG_MMIOTRACE
38
39 static inline int is_kmmio_active(void)
40 {
41 return kmmio_count;
42 }
43
44
45 extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
46
47
48 extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
49 void __iomem *addr);
50 extern void mmiotrace_iounmap(volatile void __iomem *addr);
51
52
53 extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...);
54 #else
55 static inline int is_kmmio_active(void)
56 {
57 return 0;
58 }
59
60 static inline int kmmio_handler(struct pt_regs *regs, unsigned long addr)
61 {
62 return 0;
63 }
64
65 static inline void mmiotrace_ioremap(resource_size_t offset,
66 unsigned long size, void __iomem *addr)
67 {
68 }
69
70 static inline void mmiotrace_iounmap(volatile void __iomem *addr)
71 {
72 }
73
74 static inline __printf(1, 2) int mmiotrace_printk(const char *fmt, ...)
75 {
76 return 0;
77 }
78 #endif
79
80 enum mm_io_opcode {
81 MMIO_READ = 0x1,
82 MMIO_WRITE = 0x2,
83 MMIO_PROBE = 0x3,
84 MMIO_UNPROBE = 0x4,
85 MMIO_UNKNOWN_OP = 0x5,
86 };
87
88 struct mmiotrace_rw {
89 resource_size_t phys;
90 unsigned long value;
91 unsigned long pc;
92 int map_id;
93 unsigned char opcode;
94 unsigned char width;
95 };
96
97 struct mmiotrace_map {
98 resource_size_t phys;
99 unsigned long virt;
100 unsigned long len;
101 int map_id;
102 unsigned char opcode;
103 };
104
105
106 extern void enable_mmiotrace(void);
107 extern void disable_mmiotrace(void);
108 extern void mmio_trace_rw(struct mmiotrace_rw *rw);
109 extern void mmio_trace_mapping(struct mmiotrace_map *map);
110 extern __printf(1, 0) int mmio_trace_printk(const char *fmt, va_list args);
111
112 #endif