aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-avr32/bitops.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-avr32/bitops.h')
-rw-r--r--include/asm-avr32/bitops.h301
1 files changed, 0 insertions, 301 deletions
diff --git a/include/asm-avr32/bitops.h b/include/asm-avr32/bitops.h
deleted file mode 100644
index 1a50b69..0000000
--- a/include/asm-avr32/bitops.h
+++ /dev/null
@@ -1,301 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_AVR32_BITOPS_H
-#define __ASM_AVR32_BITOPS_H
-
-#ifndef _LINUX_BITOPS_H
-#error only <linux/bitops.h> can be included directly
-#endif
-
-#include <asm/byteorder.h>
-#include <asm/system.h>
-
-/*
- * clear_bit() doesn't provide any barrier for the compiler
- */
-#define smp_mb__before_clear_bit() barrier()
-#define smp_mb__after_clear_bit() barrier()
-
-/*
- * set_bit - Atomically set a bit in memory
- * @nr: the bit to set
- * @addr: the address to start counting from
- *
- * This function is atomic and may not be reordered. See __set_bit()
- * if you do not require the atomic guarantees.
- *
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-static inline void set_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long tmp;
-
- if (__builtin_constant_p(nr)) {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %2\n"
- " sbr %0, %3\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p)
- : "m"(*p), "i"(nr)
- : "cc");
- } else {
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %2\n"
- " or %0, %3\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p)
- : "m"(*p), "r"(mask)
- : "cc");
- }
-}
-
-/*
- * clear_bit - Clears a bit in memory
- * @nr: Bit to clear
- * @addr: Address to start counting from
- *
- * clear_bit() is atomic and may not be reordered. However, it does
- * not contain a memory barrier, so if it is used for locking purposes,
- * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit()
- * in order to ensure changes are visible on other processors.
- */
-static inline void clear_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long tmp;
-
- if (__builtin_constant_p(nr)) {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %2\n"
- " cbr %0, %3\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p)
- : "m"(*p), "i"(nr)
- : "cc");
- } else {
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %2\n"
- " andn %0, %3\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p)
- : "m"(*p), "r"(mask)
- : "cc");
- }
-}
-
-/*
- * change_bit - Toggle a bit in memory
- * @nr: Bit to change
- * @addr: Address to start counting from
- *
- * change_bit() is atomic and may not be reordered.
- * Note that @nr may be almost arbitrarily large; this function is not
- * restricted to acting on a single-word quantity.
- */
-static inline void change_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- unsigned long tmp;
-
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %2\n"
- " eor %0, %3\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p)
- : "m"(*p), "r"(mask)
- : "cc");
-}
-
-/*
- * test_and_set_bit - Set a bit and return its old value
- * @nr: Bit to set
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static inline int test_and_set_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- unsigned long tmp, old;
-
- if (__builtin_constant_p(nr)) {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %3\n"
- " mov %2, %0\n"
- " sbr %0, %4\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p), "=&r"(old)
- : "m"(*p), "i"(nr)
- : "memory", "cc");
- } else {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %2, %3\n"
- " or %0, %2, %4\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p), "=&r"(old)
- : "m"(*p), "r"(mask)
- : "memory", "cc");
- }
-
- return (old & mask) != 0;
-}
-
-/*
- * test_and_clear_bit - Clear a bit and return its old value
- * @nr: Bit to clear
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static inline int test_and_clear_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- unsigned long tmp, old;
-
- if (__builtin_constant_p(nr)) {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %3\n"
- " mov %2, %0\n"
- " cbr %0, %4\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p), "=&r"(old)
- : "m"(*p), "i"(nr)
- : "memory", "cc");
- } else {
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %0, %3\n"
- " mov %2, %0\n"
- " andn %0, %4\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p), "=&r"(old)
- : "m"(*p), "r"(mask)
- : "memory", "cc");
- }
-
- return (old & mask) != 0;
-}
-
-/*
- * test_and_change_bit - Change a bit and return its old value
- * @nr: Bit to change
- * @addr: Address to count from
- *
- * This operation is atomic and cannot be reordered.
- * It also implies a memory barrier.
- */
-static inline int test_and_change_bit(int nr, volatile void * addr)
-{
- unsigned long *p = ((unsigned long *)addr) + nr / BITS_PER_LONG;
- unsigned long mask = 1UL << (nr % BITS_PER_LONG);
- unsigned long tmp, old;
-
- asm volatile(
- "1: ssrf 5\n"
- " ld.w %2, %3\n"
- " eor %0, %2, %4\n"
- " stcond %1, %0\n"
- " brne 1b"
- : "=&r"(tmp), "=o"(*p), "=&r"(old)
- : "m"(*p), "r"(mask)
- : "memory", "cc");
-
- return (old & mask) != 0;
-}
-
-#include <asm-generic/bitops/non-atomic.h>
-
-/* Find First bit Set */
-static inline unsigned long __ffs(unsigned long word)
-{
- unsigned long result;
-
- asm("brev %1\n\t"
- "clz %0,%1"
- : "=r"(result), "=&r"(word)
- : "1"(word));
- return result;
-}
-
-/* Find First Zero */
-static inline unsigned long ffz(unsigned long word)
-{
- return __ffs(~word);
-}
-
-/* Find Last bit Set */
-static inline int fls(unsigned long word)
-{
- unsigned long result;
-
- asm("clz %0,%1" : "=r"(result) : "r"(word));
- return 32 - result;
-}
-
-unsigned long find_first_zero_bit(const unsigned long *addr,
- unsigned long size);
-unsigned long find_next_zero_bit(const unsigned long *addr,
- unsigned long size,
- unsigned long offset);
-unsigned long find_first_bit(const unsigned long *addr,
- unsigned long size);
-unsigned long find_next_bit(const unsigned long *addr,
- unsigned long size,
- unsigned long offset);
-
-/*
- * ffs: find first bit set. This is defined the same way as
- * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
- *
- * The difference is that bit numbering starts at 1, and if no bit is set,
- * the function returns 0.
- */
-static inline int ffs(unsigned long word)
-{
- if(word == 0)
- return 0;
- return __ffs(word) + 1;
-}
-
-#include <asm-generic/bitops/fls64.h>
-#include <asm-generic/bitops/sched.h>
-#include <asm-generic/bitops/hweight.h>
-#include <asm-generic/bitops/lock.h>
-
-#include <asm-generic/bitops/ext2-non-atomic.h>
-#include <asm-generic/bitops/ext2-atomic.h>
-#include <asm-generic/bitops/minix-le.h>
-
-#endif /* __ASM_AVR32_BITOPS_H */