summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/include/asm/bitops.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/include/asm/bitops.h')
-rw-r--r--arch/blackfin/include/asm/bitops.h358
1 files changed, 0 insertions, 358 deletions
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h
deleted file mode 100644
index a1462bdecc..0000000000
--- a/arch/blackfin/include/asm/bitops.h
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * U-Boot - bitops.h Routines for bit operations
- *
- * Copyright (c) 2005-2007 Analog Devices Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef _BLACKFIN_BITOPS_H
-#define _BLACKFIN_BITOPS_H
-
-/*
- * Copyright 1992, Linus Torvalds.
- */
-
-#include <asm/byteorder.h>
-#include <asm/system.h>
-#include <asm-generic/bitops/fls.h>
-#include <asm-generic/bitops/__fls.h>
-#include <asm-generic/bitops/fls64.h>
-#include <asm-generic/bitops/__ffs.h>
-
-#ifdef __KERNEL__
-/*
- * Function prototypes to keep gcc -Wall happy
- */
-
-/*
- * The __ functions are not atomic
- */
-
-/*
- * ffz = Find First Zero in word. Undefined if no zero exists,
- * so code should check against ~0UL first..
- */
-static __inline__ unsigned long ffz(unsigned long word)
-{
- unsigned long result = 0;
-
- while (word & 1) {
- result++;
- word >>= 1;
- }
- return result;
-}
-
-static __inline__ void set_bit(int nr, volatile void *addr)
-{
- int *a = (int *)addr;
- int mask;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- *a |= mask;
- local_irq_restore(flags);
-}
-
-static __inline__ void __set_bit(int nr, volatile void *addr)
-{
- int *a = (int *)addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- *a |= mask;
-}
-#define PLATFORM__SET_BIT
-
-/*
- * clear_bit() doesn't provide any barrier for the compiler.
- */
-#define smp_mb__before_clear_bit() barrier()
-#define smp_mb__after_clear_bit() barrier()
-
-static __inline__ void clear_bit(int nr, volatile void *addr)
-{
- int *a = (int *)addr;
- int mask;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- *a &= ~mask;
- local_irq_restore(flags);
-}
-
-static __inline__ void change_bit(int nr, volatile void *addr)
-{
- int mask, flags;
- unsigned long *ADDR = (unsigned long *)addr;
-
- ADDR += nr >> 5;
- mask = 1 << (nr & 31);
- local_irq_save(flags);
- *ADDR ^= mask;
- local_irq_restore(flags);
-}
-
-static __inline__ void __change_bit(int nr, volatile void *addr)
-{
- int mask;
- unsigned long *ADDR = (unsigned long *)addr;
-
- ADDR += nr >> 5;
- mask = 1 << (nr & 31);
- *ADDR ^= mask;
-}
-
-static __inline__ int test_and_set_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a |= mask;
- local_irq_restore(flags);
-
- return retval;
-}
-
-static __inline__ int __test_and_set_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- retval = (mask & *a) != 0;
- *a |= mask;
- return retval;
-}
-
-static __inline__ int test_and_clear_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a &= ~mask;
- local_irq_restore(flags);
-
- return retval;
-}
-
-static __inline__ int __test_and_clear_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- retval = (mask & *a) != 0;
- *a &= ~mask;
- return retval;
-}
-
-static __inline__ int test_and_change_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
- unsigned long flags;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- local_irq_save(flags);
- retval = (mask & *a) != 0;
- *a ^= mask;
- local_irq_restore(flags);
-
- return retval;
-}
-
-static __inline__ int __test_and_change_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- volatile unsigned int *a = (volatile unsigned int *)addr;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- retval = (mask & *a) != 0;
- *a ^= mask;
- return retval;
-}
-
-/*
- * This routine doesn't need to be atomic.
- */
-static __inline__ int __constant_test_bit(int nr, const volatile void *addr)
-{
- return ((1UL << (nr & 31)) &
- (((const volatile unsigned int *)addr)[nr >> 5])) != 0;
-}
-
-static __inline__ int __test_bit(int nr, volatile void *addr)
-{
- int *a = (int *)addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- return ((mask & *a) != 0);
-}
-
-#define test_bit(nr,addr) \
-(__builtin_constant_p(nr) ? \
- __constant_test_bit((nr),(addr)) : \
- __test_bit((nr),(addr)))
-
-#define find_first_zero_bit(addr, size) \
- find_next_zero_bit((addr), (size), 0)
-
-static __inline__ int find_next_zero_bit(void *addr, int size, int offset)
-{
- unsigned long *p = ((unsigned long *)addr) + (offset >> 5);
- unsigned long result = offset & ~31UL;
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= 31UL;
- if (offset) {
- tmp = *(p++);
- tmp |= ~0UL >> (32 - offset);
- if (size < 32)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= 32;
- result += 32;
- }
- while (size & ~31UL) {
- if (~(tmp = *(p++)))
- goto found_middle;
- result += 32;
- size -= 32;
- }
- if (!size)
- return result;
- tmp = *p;
-
- found_first:
- tmp |= ~0UL >> size;
- found_middle:
- return result + ffz(tmp);
-}
-
-/*
- * hweightN: returns the hamming weight (i.e. the number
- * of bits set) of a N-bit word
- */
-
-#define hweight32(x) generic_hweight32(x)
-#define hweight16(x) generic_hweight16(x)
-#define hweight8(x) generic_hweight8(x)
-
-static __inline__ int ext2_set_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- unsigned long flags;
- volatile unsigned char *ADDR = (unsigned char *)addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- local_irq_save(flags);
- retval = (mask & *ADDR) != 0;
- *ADDR |= mask;
- local_irq_restore(flags);
- return retval;
-}
-
-static __inline__ int ext2_clear_bit(int nr, volatile void *addr)
-{
- int mask, retval;
- unsigned long flags;
- volatile unsigned char *ADDR = (unsigned char *)addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- local_irq_save(flags);
- retval = (mask & *ADDR) != 0;
- *ADDR &= ~mask;
- local_irq_restore(flags);
- return retval;
-}
-
-static __inline__ int ext2_test_bit(int nr, const volatile void *addr)
-{
- int mask;
- const volatile unsigned char *ADDR = (const unsigned char *)addr;
-
- ADDR += nr >> 3;
- mask = 1 << (nr & 0x07);
- return ((mask & *ADDR) != 0);
-}
-
-#define ext2_find_first_zero_bit(addr, size) \
- ext2_find_next_zero_bit((addr), (size), 0)
-
-static __inline__ unsigned long ext2_find_next_zero_bit(void *addr,
- unsigned long size,
- unsigned long offset)
-{
- unsigned long *p = ((unsigned long *)addr) + (offset >> 5);
- unsigned long result = offset & ~31UL;
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= 31UL;
- if (offset) {
- tmp = *(p++);
- tmp |= ~0UL >> (32 - offset);
- if (size < 32)
- goto found_first;
- if (~tmp)
- goto found_middle;
- size -= 32;
- result += 32;
- }
- while (size & ~31UL) {
- if (~(tmp = *(p++)))
- goto found_middle;
- result += 32;
- size -= 32;
- }
- if (!size)
- return result;
- tmp = *p;
-
- found_first:
- tmp |= ~0UL >> size;
- found_middle:
- return result + ffz(tmp);
-}
-
-/* Bitmap functions for the minix filesystem. */
-#define minix_test_and_set_bit(nr,addr) test_and_set_bit(nr,addr)
-#define minix_set_bit(nr,addr) set_bit(nr,addr)
-#define minix_test_and_clear_bit(nr,addr) test_and_clear_bit(nr,addr)
-#define minix_test_bit(nr,addr) test_bit(nr,addr)
-#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)
-
-#endif
-
-#endif
generated by cgit (git 2.34.1) at 2024-12-25 05:51:48 +0000