projects / linux-2.6-block.git / blame
| 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 | ||
| 46fe23ac GY |
31 | #define trace_buffer_init() bfin_write_TBUFCTL(BFIN_TRACE_INIT) |
| 32 | ||
| 669b792c | 33 | #define trace_buffer_save(x) \ |
| 518039bc RG |
34 | do { \ |
| 35 | (x) = bfin_read_TBUFCTL(); \ | |
| 36 | bfin_write_TBUFCTL((x) & ~TBUFEN); \ | |
| 37 | } while (0) | |
| 669b792c RG |
38 | |
| 39 | #define trace_buffer_restore(x) \ | |
| 518039bc RG |
40 | do { \ |
| 41 | bfin_write_TBUFCTL((x)); \ | |
| 42 | } while (0) | |
| 43 | #else /* DEBUG_BFIN_HWTRACE_ON */ | |
| 44 | ||
| 45 | #define trace_buffer_save(x) | |
| 46 | #define trace_buffer_restore(x) | |
| 47 | #endif /* CONFIG_DEBUG_BFIN_HWTRACE_ON */ | |
| 669b792c RG |
48 | |
| 49 | #else | |
| 50 | /* Trace Macros for Assembly files */ | |
| 51 | ||
| 518039bc RG |
52 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
| 53 | ||
| 669b792c RG |
54 | #define trace_buffer_stop(preg, dreg) \ |
| 55 | preg.L = LO(TBUFCTL); \ | |
| 56 | preg.H = HI(TBUFCTL); \ | |
| 57 | dreg = 0x1; \ | |
| 58 | [preg] = dreg; | |
| 59 | ||
| 518039bc RG |
60 | #define trace_buffer_init(preg, dreg) \ |
| 61 | preg.L = LO(TBUFCTL); \ | |
| 62 | preg.H = HI(TBUFCTL); \ | |
| 63 | dreg = BFIN_TRACE_INIT; \ | |
| 669b792c RG |
64 | [preg] = dreg; |
| 65 | ||
| 80f31c8a MF |
66 | #define trace_buffer_save(preg, dreg) \ |
| 67 | preg.L = LO(TBUFCTL); \ | |
| 68 | preg.H = HI(TBUFCTL); \ | |
| 69 | dreg = [preg]; \ | |
| 2a0c4fdb | 70 | [--sp] = dreg; \ |
| 80f31c8a MF |
71 | dreg = 0x1; \ |
| 72 | [preg] = dreg; | |
| 73 | ||
| 74 | #define trace_buffer_restore(preg, dreg) \ | |
| 75 | preg.L = LO(TBUFCTL); \ | |
| 76 | preg.H = HI(TBUFCTL); \ | |
| 2a0c4fdb | 77 | dreg = [sp++]; \ |
| 80f31c8a MF |
78 | [preg] = dreg; |
| 79 | ||
| 518039bc RG |
80 | #else /* CONFIG_DEBUG_BFIN_HWTRACE_ON */ |
| 81 | ||
| 82 | #define trace_buffer_stop(preg, dreg) | |
| 518039bc | 83 | #define trace_buffer_init(preg, dreg) |
| 80f31c8a MF |
84 | #define trace_buffer_save(preg, dreg) |
| 85 | #define trace_buffer_restore(preg, dreg) | |
| 518039bc RG |
86 | |
| 87 | #endif /* CONFIG_DEBUG_BFIN_HWTRACE_ON */ | |
| 88 | ||
| 669b792c | 89 | #ifdef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE |
| 80f31c8a MF |
90 | # define DEBUG_HWTRACE_SAVE(preg, dreg) trace_buffer_save(preg, dreg) |
| 91 | # define DEBUG_HWTRACE_RESTORE(preg, dreg) trace_buffer_restore(preg, dreg) | |
| 669b792c | 92 | #else |
| 80f31c8a MF |
93 | # define DEBUG_HWTRACE_SAVE(preg, dreg) |
| 94 | # define DEBUG_HWTRACE_RESTORE(preg, dreg) | |
| 669b792c RG |
95 | #endif |
| 96 | ||
| 97 | #endif /* __ASSEMBLY__ */ | |
| 98 | ||
| 99 | #endif /* _BLACKFIN_TRACE_ */ |