Commit | Line | Data |
---|---|---|
669b792c | 1 | /* |
96f1050d | 2 | * header file for hardware trace functions |
669b792c | 3 | * |
96f1050d RG |
4 | * Copyright 2007-2008 Analog Devices Inc. |
5 | * | |
6 | * Licensed under the GPL-2 or later. | |
669b792c RG |
7 | */ |
8 | ||
9 | #ifndef _BLACKFIN_TRACE_ | |
10 | #define _BLACKFIN_TRACE_ | |
11 | ||
518039bc RG |
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 | ||
669b792c | 23 | #ifndef __ASSEMBLY__ |
518039bc RG |
24 | extern unsigned long trace_buff_offset; |
25 | extern unsigned long software_trace_buff[]; | |
26 | ||
669b792c RG |
27 | /* Trace Macros for C files */ |
28 | ||
518039bc RG |
29 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
30 | ||
669b792c | 31 | #define trace_buffer_save(x) \ |
518039bc RG |
32 | do { \ |
33 | (x) = bfin_read_TBUFCTL(); \ | |
34 | bfin_write_TBUFCTL((x) & ~TBUFEN); \ | |
35 | } while (0) | |
669b792c RG |
36 | |
37 | #define trace_buffer_restore(x) \ | |
518039bc RG |
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 */ | |
669b792c RG |
46 | |
47 | #else | |
48 | /* Trace Macros for Assembly files */ | |
49 | ||
518039bc RG |
50 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
51 | ||
669b792c RG |
52 | #define trace_buffer_stop(preg, dreg) \ |
53 | preg.L = LO(TBUFCTL); \ | |
54 | preg.H = HI(TBUFCTL); \ | |
55 | dreg = 0x1; \ | |
56 | [preg] = dreg; | |
57 | ||
518039bc RG |
58 | #define trace_buffer_init(preg, dreg) \ |
59 | preg.L = LO(TBUFCTL); \ | |
60 | preg.H = HI(TBUFCTL); \ | |
61 | dreg = BFIN_TRACE_INIT; \ | |
669b792c RG |
62 | [preg] = dreg; |
63 | ||
80f31c8a MF |
64 | #define trace_buffer_save(preg, dreg) \ |
65 | preg.L = LO(TBUFCTL); \ | |
66 | preg.H = HI(TBUFCTL); \ | |
67 | dreg = [preg]; \ | |
2a0c4fdb | 68 | [--sp] = dreg; \ |
80f31c8a MF |
69 | dreg = 0x1; \ |
70 | [preg] = dreg; | |
71 | ||
72 | #define trace_buffer_restore(preg, dreg) \ | |
73 | preg.L = LO(TBUFCTL); \ | |
74 | preg.H = HI(TBUFCTL); \ | |
2a0c4fdb | 75 | dreg = [sp++]; \ |
80f31c8a MF |
76 | [preg] = dreg; |
77 | ||
518039bc RG |
78 | #else /* CONFIG_DEBUG_BFIN_HWTRACE_ON */ |
79 | ||
80 | #define trace_buffer_stop(preg, dreg) | |
518039bc | 81 | #define trace_buffer_init(preg, dreg) |
80f31c8a MF |
82 | #define trace_buffer_save(preg, dreg) |
83 | #define trace_buffer_restore(preg, dreg) | |
518039bc RG |
84 | |
85 | #endif /* CONFIG_DEBUG_BFIN_HWTRACE_ON */ | |
86 | ||
669b792c | 87 | #ifdef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE |
80f31c8a MF |
88 | # define DEBUG_HWTRACE_SAVE(preg, dreg) trace_buffer_save(preg, dreg) |
89 | # define DEBUG_HWTRACE_RESTORE(preg, dreg) trace_buffer_restore(preg, dreg) | |
669b792c | 90 | #else |
80f31c8a MF |
91 | # define DEBUG_HWTRACE_SAVE(preg, dreg) |
92 | # define DEBUG_HWTRACE_RESTORE(preg, dreg) | |
669b792c RG |
93 | #endif |
94 | ||
95 | #endif /* __ASSEMBLY__ */ | |
96 | ||
97 | #endif /* _BLACKFIN_TRACE_ */ |