diff options
Diffstat (limited to 'include/asm-xtensa/delay.h')
-rw-r--r-- | include/asm-xtensa/delay.h | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/include/asm-xtensa/delay.h b/include/asm-xtensa/delay.h deleted file mode 100644 index e1d8c9e010c1..000000000000 --- a/include/asm-xtensa/delay.h +++ /dev/null | |||
@@ -1,49 +0,0 @@ | |||
1 | /* | ||
2 | * include/asm-xtensa/delay.h | ||
3 | * | ||
4 | * This file is subject to the terms and conditions of the GNU General Public | ||
5 | * License. See the file "COPYING" in the main directory of this archive | ||
6 | * for more details. | ||
7 | * | ||
8 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
9 | * | ||
10 | */ | ||
11 | |||
12 | #ifndef _XTENSA_DELAY_H | ||
13 | #define _XTENSA_DELAY_H | ||
14 | |||
15 | #include <asm/processor.h> | ||
16 | #include <asm/param.h> | ||
17 | |||
18 | extern unsigned long loops_per_jiffy; | ||
19 | |||
20 | static inline void __delay(unsigned long loops) | ||
21 | { | ||
22 | /* 2 cycles per loop. */ | ||
23 | __asm__ __volatile__ ("1: addi %0, %0, -2; bgeui %0, 2, 1b" | ||
24 | : "=r" (loops) : "0" (loops)); | ||
25 | } | ||
26 | |||
27 | static __inline__ u32 xtensa_get_ccount(void) | ||
28 | { | ||
29 | u32 ccount; | ||
30 | asm volatile ("rsr %0, 234; # CCOUNT\n" : "=r" (ccount)); | ||
31 | return ccount; | ||
32 | } | ||
33 | |||
34 | /* For SMP/NUMA systems, change boot_cpu_data to something like | ||
35 | * local_cpu_data->... where local_cpu_data points to the current | ||
36 | * cpu. */ | ||
37 | |||
38 | static __inline__ void udelay (unsigned long usecs) | ||
39 | { | ||
40 | unsigned long start = xtensa_get_ccount(); | ||
41 | unsigned long cycles = usecs * (loops_per_jiffy / (1000000UL / HZ)); | ||
42 | |||
43 | /* Note: all variables are unsigned (can wrap around)! */ | ||
44 | while (((unsigned long)xtensa_get_ccount()) - start < cycles) | ||
45 | ; | ||
46 | } | ||
47 | |||
48 | #endif | ||
49 | |||