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8b7d89d0 PP |
1 | #ifndef MMIOTRACE_H |
2 | #define MMIOTRACE_H | |
3 | ||
4 | #include <asm/types.h> | |
5 | ||
63ffa3e4 PP |
6 | /* |
7 | * If you change anything here, you must bump MMIO_VERSION. | |
8 | * This is the relay data format for user space. | |
9 | */ | |
8b7d89d0 PP |
10 | #define MMIO_VERSION 0x04 |
11 | ||
12 | /* mm_io_header.type */ | |
13 | #define MMIO_OPCODE_MASK 0xff | |
14 | #define MMIO_OPCODE_SHIFT 0 | |
15 | #define MMIO_WIDTH_MASK 0xff00 | |
16 | #define MMIO_WIDTH_SHIFT 8 | |
17 | #define MMIO_MAGIC (0x6f000000 | (MMIO_VERSION<<16)) | |
18 | #define MMIO_MAGIC_MASK 0xffff0000 | |
19 | ||
20 | enum mm_io_opcode { /* payload type: */ | |
21 | MMIO_READ = 0x1, /* struct mm_io_rw */ | |
22 | MMIO_WRITE = 0x2, /* struct mm_io_rw */ | |
23 | MMIO_PROBE = 0x3, /* struct mm_io_map */ | |
24 | MMIO_UNPROBE = 0x4, /* struct mm_io_map */ | |
25 | MMIO_MARKER = 0x5, /* raw char data */ | |
26 | MMIO_UNKNOWN_OP = 0x6, /* struct mm_io_rw */ | |
27 | }; | |
28 | ||
29 | struct mm_io_header { | |
63ffa3e4 | 30 | __u32 type; /* see MMIO_* macros above */ |
8b7d89d0 PP |
31 | __u32 sec; /* timestamp */ |
32 | __u32 nsec; | |
33 | __u32 pid; /* PID of the process, or 0 for kernel core */ | |
34 | __u16 data_len; /* length of the following payload */ | |
35 | }; | |
36 | ||
37 | struct mm_io_rw { | |
38 | __u64 address; /* virtual address of register */ | |
39 | __u64 value; | |
40 | __u64 pc; /* optional program counter */ | |
41 | }; | |
42 | ||
43 | struct mm_io_map { | |
44 | __u64 phys; /* base address in PCI space */ | |
45 | __u64 addr; /* base virtual address */ | |
46 | __u64 len; /* mapping size */ | |
47 | __u64 pc; /* optional program counter */ | |
48 | }; | |
49 | ||
50 | ||
51 | /* | |
52 | * These structures are used to allow a single relay_write() | |
53 | * call to write a full packet. | |
54 | */ | |
55 | ||
56 | struct mm_io_header_rw { | |
57 | struct mm_io_header header; | |
58 | struct mm_io_rw rw; | |
59 | } __attribute__((packed)); | |
60 | ||
61 | struct mm_io_header_map { | |
62 | struct mm_io_header header; | |
63 | struct mm_io_map map; | |
64 | } __attribute__((packed)); | |
65 | ||
66 | #endif /* MMIOTRACE_H */ |