[PATCH] configfs: Include linux/err.h in linux/configfs.h
[linux-2.6] / include / asm-ia64 / delay.h
1 #ifndef _ASM_IA64_DELAY_H
2 #define _ASM_IA64_DELAY_H
3
4 /*
5  * Delay routines using a pre-computed "cycles/usec" value.
6  *
7  * Copyright (C) 1998, 1999 Hewlett-Packard Co
8  *      David Mosberger-Tang <davidm@hpl.hp.com>
9  * Copyright (C) 1999 VA Linux Systems
10  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
11  * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
12  * Copyright (C) 1999 Don Dugger <don.dugger@intel.com>
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/compiler.h>
18
19 #include <asm/intrinsics.h>
20 #include <asm/processor.h>
21
22 static __inline__ void
23 ia64_set_itm (unsigned long val)
24 {
25         ia64_setreg(_IA64_REG_CR_ITM, val);
26         ia64_srlz_d();
27 }
28
29 static __inline__ unsigned long
30 ia64_get_itm (void)
31 {
32         unsigned long result;
33
34         result = ia64_getreg(_IA64_REG_CR_ITM);
35         ia64_srlz_d();
36         return result;
37 }
38
39 static __inline__ void
40 ia64_set_itv (unsigned long val)
41 {
42         ia64_setreg(_IA64_REG_CR_ITV, val);
43         ia64_srlz_d();
44 }
45
46 static __inline__ unsigned long
47 ia64_get_itv (void)
48 {
49         return ia64_getreg(_IA64_REG_CR_ITV);
50 }
51
52 static __inline__ void
53 ia64_set_itc (unsigned long val)
54 {
55         ia64_setreg(_IA64_REG_AR_ITC, val);
56         ia64_srlz_d();
57 }
58
59 static __inline__ unsigned long
60 ia64_get_itc (void)
61 {
62         unsigned long result;
63
64         result = ia64_getreg(_IA64_REG_AR_ITC);
65         ia64_barrier();
66 #ifdef CONFIG_ITANIUM
67         while (unlikely((__s32) result == -1)) {
68                 result = ia64_getreg(_IA64_REG_AR_ITC);
69                 ia64_barrier();
70         }
71 #endif
72         return result;
73 }
74
75 extern void ia64_delay_loop (unsigned long loops);
76
77 static __inline__ void
78 __delay (unsigned long loops)
79 {
80         if (unlikely(loops < 1))
81                 return;
82
83         ia64_delay_loop (loops - 1);
84 }
85
86 extern void udelay (unsigned long usecs);
87
88 #endif /* _ASM_IA64_DELAY_H */