1#ifndef _ASM_POWERPC_TIMEX_H
2#define _ASM_POWERPC_TIMEX_H
3
4#ifdef __KERNEL__
5
6
7
8
9
10#include <asm/cputable.h>
11#include <asm/reg.h>
12
13#define CLOCK_TICK_RATE 1024000
14
15typedef unsigned long cycles_t;
16
17static inline cycles_t get_cycles(void)
18{
19#ifdef __powerpc64__
20 return mftb();
21#else
22 cycles_t ret;
23
24
25
26
27
28
29 ret = 0;
30
31 __asm__ __volatile__(
32#ifdef CONFIG_8xx
33 "97: mftb %0\n"
34#else
35 "97: mfspr %0, %2\n"
36#endif
37 "99:\n"
38 ".section __ftr_fixup,\"a\"\n"
39 ".align 2\n"
40 "98:\n"
41 " .long %1\n"
42 " .long 0\n"
43 " .long 97b-98b\n"
44 " .long 99b-98b\n"
45 " .long 0\n"
46 " .long 0\n"
47 ".previous"
48#ifdef CONFIG_8xx
49 : "=r" (ret) : "i" (CPU_FTR_601));
50#else
51 : "=r" (ret) : "i" (CPU_FTR_601), "i" (SPRN_TBRL));
52#endif
53 return ret;
54#endif
55}
56
57#endif
58#endif
59