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review.evervolv.com / android_kernel_oneplus_msm8996 / b5b5150977cdfb7173f4468ccd30f9b4a981b902 / . / arch / blackfin / include / asm / trace.h
blob: 609ad3c841891c0bb59cb9784edf113da932ed39 [file] [log] [blame]
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]1/*
Robin Getz96f10502009-09-24 14:11:24 +0000[diff] [blame]2 * header file for hardware trace functions
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]3 *
Robin Getz96f10502009-09-24 14:11:24 +0000[diff] [blame]4 * Copyright 2007-2008 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]7 */
8
9#ifndef _BLACKFIN_TRACE_
10#define _BLACKFIN_TRACE_
11
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]12/* Normally, we use ON, but you can't turn on software expansion until
13 * interrupts subsystem is ready
14 */
15
16#define BFIN_TRACE_INIT ((CONFIG_DEBUG_BFIN_HWTRACE_COMPRESSION << 4) | 0x03)
17#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
18#define BFIN_TRACE_ON (BFIN_TRACE_INIT | (CONFIG_DEBUG_BFIN_HWTRACE_EXPAND << 2))
19#else
20#define BFIN_TRACE_ON (BFIN_TRACE_INIT)
21#endif
22
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]23#ifndef __ASSEMBLY__
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]24extern unsigned long trace_buff_offset;
25extern unsigned long software_trace_buff[];
26
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]27/* Trace Macros for C files */
28
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]29#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
30
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]31#define trace_buffer_save(x) \
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]32 do { \
33 (x) = bfin_read_TBUFCTL(); \
34 bfin_write_TBUFCTL((x) & ~TBUFEN); \
35 } while (0)
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]36
37#define trace_buffer_restore(x) \
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]38 do { \
39 bfin_write_TBUFCTL((x)); \
40 } while (0)
41#else /* DEBUG_BFIN_HWTRACE_ON */
42
43#define trace_buffer_save(x)
44#define trace_buffer_restore(x)
45#endif /* CONFIG_DEBUG_BFIN_HWTRACE_ON */
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]46
47#else
48/* Trace Macros for Assembly files */
49
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]50#ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON
51
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]52#define trace_buffer_stop(preg, dreg) \
53 preg.L = LO(TBUFCTL); \
54 preg.H = HI(TBUFCTL); \
55 dreg = 0x1; \
56 [preg] = dreg;
57
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]58#define trace_buffer_init(preg, dreg) \
59 preg.L = LO(TBUFCTL); \
60 preg.H = HI(TBUFCTL); \
61 dreg = BFIN_TRACE_INIT; \
62 [preg] = dreg;
63
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]64#define trace_buffer_save(preg, dreg) \
65 preg.L = LO(TBUFCTL); \
66 preg.H = HI(TBUFCTL); \
67 dreg = [preg]; \
Bernd Schmidt2a0c4fd2008-04-23 07:17:34 +0800[diff] [blame]68 [--sp] = dreg; \
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]69 dreg = 0x1; \
70 [preg] = dreg;
71
72#define trace_buffer_restore(preg, dreg) \
73 preg.L = LO(TBUFCTL); \
74 preg.H = HI(TBUFCTL); \
Bernd Schmidt2a0c4fd2008-04-23 07:17:34 +0800[diff] [blame]75 dreg = [sp++]; \
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]76 [preg] = dreg;
77
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]78#else /* CONFIG_DEBUG_BFIN_HWTRACE_ON */
79
80#define trace_buffer_stop(preg, dreg)
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]81#define trace_buffer_init(preg, dreg)
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]82#define trace_buffer_save(preg, dreg)
83#define trace_buffer_restore(preg, dreg)
Robin Getz518039b2007-07-25 11:03:28 +0800[diff] [blame]84
85#endif /* CONFIG_DEBUG_BFIN_HWTRACE_ON */
86
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]87#ifdef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]88# define DEBUG_HWTRACE_SAVE(preg, dreg) trace_buffer_save(preg, dreg)
89# define DEBUG_HWTRACE_RESTORE(preg, dreg) trace_buffer_restore(preg, dreg)
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]90#else
Mike Frysinger80f31c82008-02-02 15:47:24 +0800[diff] [blame]91# define DEBUG_HWTRACE_SAVE(preg, dreg)
92# define DEBUG_HWTRACE_RESTORE(preg, dreg)
Robin Getz669b7922007-06-21 16:34:08 +0800[diff] [blame]93#endif
94
95#endif /* __ASSEMBLY__ */
96
97#endif /* _BLACKFIN_TRACE_ */