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-rw-r--r--arch/mips/include/asm/cpu-info.h4
-rw-r--r--arch/mips/include/asm/delay.h92
-rw-r--r--arch/mips/include/asm/ioctl.h4
3 files changed, 11 insertions, 89 deletions
diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h
index 744cd8fb107f..126044308dec 100644
--- a/arch/mips/include/asm/cpu-info.h
+++ b/arch/mips/include/asm/cpu-info.h
@@ -39,8 +39,8 @@ struct cache_desc {
39#define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */ 39#define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */
40 40
41struct cpuinfo_mips { 41struct cpuinfo_mips {
42 unsigned long udelay_val; 42 unsigned int udelay_val;
43 unsigned long asid_cache; 43 unsigned int asid_cache;
44 44
45 /* 45 /*
46 * Capability and feature descriptor structure for MIPS CPU 46 * Capability and feature descriptor structure for MIPS CPU
diff --git a/arch/mips/include/asm/delay.h b/arch/mips/include/asm/delay.h
index b0bccd2c4ed5..a07e51b2be13 100644
--- a/arch/mips/include/asm/delay.h
+++ b/arch/mips/include/asm/delay.h
@@ -11,94 +11,12 @@
11#ifndef _ASM_DELAY_H 11#ifndef _ASM_DELAY_H
12#define _ASM_DELAY_H 12#define _ASM_DELAY_H
13 13
14#include <linux/param.h> 14extern void __delay(unsigned int loops);
15#include <linux/smp.h> 15extern void __ndelay(unsigned int ns);
16extern void __udelay(unsigned int us);
16 17
17#include <asm/compiler.h> 18#define ndelay(ns) __udelay(ns)
18#include <asm/war.h> 19#define udelay(us) __udelay(us)
19
20static inline void __delay(unsigned long loops)
21{
22 if (sizeof(long) == 4)
23 __asm__ __volatile__ (
24 " .set noreorder \n"
25 " .align 3 \n"
26 "1: bnez %0, 1b \n"
27 " subu %0, 1 \n"
28 " .set reorder \n"
29 : "=r" (loops)
30 : "0" (loops));
31 else if (sizeof(long) == 8 && !DADDI_WAR)
32 __asm__ __volatile__ (
33 " .set noreorder \n"
34 " .align 3 \n"
35 "1: bnez %0, 1b \n"
36 " dsubu %0, 1 \n"
37 " .set reorder \n"
38 : "=r" (loops)
39 : "0" (loops));
40 else if (sizeof(long) == 8 && DADDI_WAR)
41 __asm__ __volatile__ (
42 " .set noreorder \n"
43 " .align 3 \n"
44 "1: bnez %0, 1b \n"
45 " dsubu %0, %2 \n"
46 " .set reorder \n"
47 : "=r" (loops)
48 : "0" (loops), "r" (1));
49}
50
51
52/*
53 * Division by multiplication: you don't have to worry about
54 * loss of precision.
55 *
56 * Use only for very small delays ( < 1 msec). Should probably use a
57 * lookup table, really, as the multiplications take much too long with
58 * short delays. This is a "reasonable" implementation, though (and the
59 * first constant multiplications gets optimized away if the delay is
60 * a constant)
61 */
62
63static inline void __udelay(unsigned long usecs, unsigned long lpj)
64{
65 unsigned long hi, lo;
66
67 /*
68 * The rates of 128 is rounded wrongly by the catchall case
69 * for 64-bit. Excessive precission? Probably ...
70 */
71#if defined(CONFIG_64BIT) && (HZ == 128)
72 usecs *= 0x0008637bd05af6c7UL; /* 2**64 / (1000000 / HZ) */
73#elif defined(CONFIG_64BIT)
74 usecs *= (0x8000000000000000UL / (500000 / HZ));
75#else /* 32-bit junk follows here */
76 usecs *= (unsigned long) (((0x8000000000000000ULL / (500000 / HZ)) +
77 0x80000000ULL) >> 32);
78#endif
79
80 if (sizeof(long) == 4)
81 __asm__("multu\t%2, %3"
82 : "=h" (usecs), "=l" (lo)
83 : "r" (usecs), "r" (lpj)
84 : GCC_REG_ACCUM);
85 else if (sizeof(long) == 8 && !R4000_WAR)
86 __asm__("dmultu\t%2, %3"
87 : "=h" (usecs), "=l" (lo)
88 : "r" (usecs), "r" (lpj)
89 : GCC_REG_ACCUM);
90 else if (sizeof(long) == 8 && R4000_WAR)
91 __asm__("dmultu\t%3, %4\n\tmfhi\t%0"
92 : "=r" (usecs), "=h" (hi), "=l" (lo)
93 : "r" (usecs), "r" (lpj)
94 : GCC_REG_ACCUM);
95
96 __delay(usecs);
97}
98
99#define __udelay_val cpu_data[raw_smp_processor_id()].udelay_val
100
101#define udelay(usecs) __udelay((usecs), __udelay_val)
102 20
103/* make sure "usecs *= ..." in udelay do not overflow. */ 21/* make sure "usecs *= ..." in udelay do not overflow. */
104#if HZ >= 1000 22#if HZ >= 1000
diff --git a/arch/mips/include/asm/ioctl.h b/arch/mips/include/asm/ioctl.h
index 85067e248a83..916163401b2c 100644
--- a/arch/mips/include/asm/ioctl.h
+++ b/arch/mips/include/asm/ioctl.h
@@ -60,12 +60,16 @@
60 ((nr) << _IOC_NRSHIFT) | \ 60 ((nr) << _IOC_NRSHIFT) | \
61 ((size) << _IOC_SIZESHIFT)) 61 ((size) << _IOC_SIZESHIFT))
62 62
63#ifdef __KERNEL__
63/* provoke compile error for invalid uses of size argument */ 64/* provoke compile error for invalid uses of size argument */
64extern unsigned int __invalid_size_argument_for_IOC; 65extern unsigned int __invalid_size_argument_for_IOC;
65#define _IOC_TYPECHECK(t) \ 66#define _IOC_TYPECHECK(t) \
66 ((sizeof(t) == sizeof(t[1]) && \ 67 ((sizeof(t) == sizeof(t[1]) && \
67 sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ 68 sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
68 sizeof(t) : __invalid_size_argument_for_IOC) 69 sizeof(t) : __invalid_size_argument_for_IOC)
70#else
71#define _IOC_TYPECHECK(t) (sizeof(t))
72#endif
69 73
70/* used to create numbers */ 74/* used to create numbers */
71#define _IO(type, nr) _IOC(_IOC_NONE, (type), (nr), 0) 75#define _IO(type, nr) _IOC(_IOC_NONE, (type), (nr), 0)
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 21:15:10 -0500