4 #include <linux/types.h>
6 #include <linux/list.h>
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 *);
17 struct list_head list; /* kmmio internal list */
18 unsigned long addr; /* start location of the probe point */
19 unsigned long len; /* length of the probe region */
20 kmmio_pre_handler_t pre_handler; /* Called before addr is executed. */
21 kmmio_post_handler_t post_handler; /* Called after addr is executed */
25 /* kmmio is active by some kmmio_probes? */
26 static inline int is_kmmio_active(void)
28 extern unsigned int kmmio_count;
32 extern int register_kmmio_probe(struct kmmio_probe *p);
33 extern void unregister_kmmio_probe(struct kmmio_probe *p);
35 /* Called from page fault handler. */
36 extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
38 /* Called from ioremap.c */
39 #ifdef CONFIG_MMIOTRACE
41 mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr);
42 extern void mmiotrace_iounmap(volatile void __iomem *addr);
45 mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr)
48 static inline void mmiotrace_iounmap(volatile void __iomem *addr)
51 #endif /* CONFIG_MMIOTRACE_HOOKS */
54 MMIO_READ = 0x1, /* struct mmiotrace_rw */
55 MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
56 MMIO_PROBE = 0x3, /* struct mmiotrace_map */
57 MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
58 MMIO_MARKER = 0x5, /* raw char data */
59 MMIO_UNKNOWN_OP = 0x6, /* struct mmiotrace_rw */
63 unsigned long phys; /* PCI address of register */
65 unsigned long pc; /* optional program counter */
67 unsigned char opcode; /* one of MMIO_{READ,WRITE,UNKNOWN_OP} */
68 unsigned char width; /* size of register access in bytes */
71 struct mmiotrace_map {
72 unsigned long phys; /* base address in PCI space */
73 unsigned long virt; /* base virtual address */
74 unsigned long len; /* mapping size */
76 unsigned char opcode; /* MMIO_PROBE or MMIO_UNPROBE */
79 /* in kernel/trace/trace_mmiotrace.c */
80 extern void enable_mmiotrace(void);
81 extern void disable_mmiotrace(void);
82 extern void mmio_trace_rw(struct mmiotrace_rw *rw);
83 extern void mmio_trace_mapping(struct mmiotrace_map *map);
85 #endif /* MMIOTRACE_H */