8 #include <linux/list.h>
13 typedef void (*kmmio_pre_handler_t)(struct kmmio_probe *,
14 struct pt_regs *, unsigned long addr);
15 typedef void (*kmmio_post_handler_t)(struct kmmio_probe *,
16 unsigned long condition, struct pt_regs *);
19 struct list_head list; /* kmmio internal list */
20 unsigned long addr; /* start location of the probe point */
21 unsigned long len; /* length of the probe region */
22 kmmio_pre_handler_t pre_handler; /* Called before addr is executed. */
23 kmmio_post_handler_t post_handler; /* Called after addr is executed */
27 /* kmmio is active by some kmmio_probes? */
28 static inline int is_kmmio_active(void)
30 extern unsigned int kmmio_count;
34 extern void reference_kmmio(void);
35 extern void unreference_kmmio(void);
36 extern int register_kmmio_probe(struct kmmio_probe *p);
37 extern void unregister_kmmio_probe(struct kmmio_probe *p);
39 /* Called from page fault handler. */
40 extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
42 /* Called from ioremap.c */
43 #ifdef CONFIG_MMIOTRACE
45 mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr);
46 extern void mmiotrace_iounmap(volatile void __iomem *addr);
49 mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr)
52 static inline void mmiotrace_iounmap(volatile void __iomem *addr)
55 #endif /* CONFIG_MMIOTRACE_HOOKS */
58 MMIO_READ = 0x1, /* struct mmiotrace_rw */
59 MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
60 MMIO_PROBE = 0x3, /* struct mmiotrace_map */
61 MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
62 MMIO_MARKER = 0x5, /* raw char data */
63 MMIO_UNKNOWN_OP = 0x6, /* struct mmiotrace_rw */
67 unsigned long phys; /* PCI address of register */
69 unsigned long pc; /* optional program counter */
71 unsigned char opcode; /* one of MMIO_{READ,WRITE,UNKNOWN_OP} */
72 unsigned char width; /* size of register access in bytes */
75 struct mmiotrace_map {
76 unsigned long phys; /* base address in PCI space */
77 unsigned long virt; /* base virtual address */
78 unsigned long len; /* mapping size */
80 unsigned char opcode; /* MMIO_PROBE or MMIO_UNPROBE */
83 /* in kernel/trace/trace_mmiotrace.c */
84 extern void enable_mmiotrace(void);
85 extern void disable_mmiotrace(void);
86 extern void mmio_trace_rw(struct mmiotrace_rw *rw);
87 extern void mmio_trace_mapping(struct mmiotrace_map *map);
89 #endif /* __KERNEL__ */
91 #endif /* MMIOTRACE_H */