kdump: use is_kdump_kernel() in sba_init()
[linux-2.6.git] / arch / sh / lib / delay.c
1 /*
2  *      Precise Delay Loops for SuperH
3  *
4  *      Copyright (C) 1999 Niibe Yutaka & Kaz Kojima
5  */
6
7 #include <linux/sched.h>
8 #include <linux/delay.h>
9
10 void __delay(unsigned long loops)
11 {
12         __asm__ __volatile__(
13                 "tst    %0, %0\n\t"
14                 "1:\t"
15                 "bf/s   1b\n\t"
16                 " dt    %0"
17                 : "=r" (loops)
18                 : "0" (loops)
19                 : "t");
20 }
21
22 inline void __const_udelay(unsigned long xloops)
23 {
24         __asm__("dmulu.l        %0, %2\n\t"
25                 "sts    mach, %0"
26                 : "=r" (xloops)
27                 : "0" (xloops),
28                   "r" (HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy)
29                 : "macl", "mach");
30         __delay(xloops);
31 }
32
33 void __udelay(unsigned long usecs)
34 {
35         __const_udelay(usecs * 0x000010c6);  /* 2**32 / 1000000 */
36 }
37
38 void __ndelay(unsigned long nsecs)
39 {
40         __const_udelay(nsecs * 0x00000005);
41 }
42