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Diffstat (limited to 'arch/m32r/include/asm/bitops.h')
| -rw-r--r-- | arch/m32r/include/asm/bitops.h | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/arch/m32r/include/asm/bitops.h b/arch/m32r/include/asm/bitops.h deleted file mode 100644 index 64e70e5..0000000 --- a/arch/m32r/include/asm/bitops.h +++ /dev/null @@ -1,274 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_M32R_BITOPS_H -#define _ASM_M32R_BITOPS_H - -/* - * linux/include/asm-m32r/bitops.h - * - * Copyright 1992, Linus Torvalds. - * - * M32R version: - * Copyright (C) 2001, 2002 Hitoshi Yamamoto - * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> - */ - -#ifndef _LINUX_BITOPS_H -#error only <linux/bitops.h> can be included directly -#endif - -#include <linux/compiler.h> -#include <linux/irqflags.h> -#include <asm/assembler.h> -#include <asm/byteorder.h> -#include <asm/dcache_clear.h> -#include <asm/types.h> -#include <asm/barrier.h> - -/* - * These have to be done with inline assembly: that way the bit-setting - * is guaranteed to be atomic. All bit operations return 0 if the bit - * was cleared before the operation and != 0 if it was not. - * - * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1). - */ - -/** - * 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) -{ - __u32 mask; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "r6", "%1") - M32R_LOCK" %0, @%1; \n\t" - "or %0, %2; \n\t" - M32R_UNLOCK" %0, @%1; \n\t" - : "=&r" (tmp) - : "r" (a), "r" (mask) - : "memory" -#ifdef CONFIG_CHIP_M32700_TS1 - , "r6" -#endif /* CONFIG_CHIP_M32700_TS1 */ - ); - local_irq_restore(flags); -} - -/** - * 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_atomic() and/or smp_mb__after_atomic() - * in order to ensure changes are visible on other processors. - */ -static __inline__ void clear_bit(int nr, volatile void * addr) -{ - __u32 mask; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "r6", "%1") - M32R_LOCK" %0, @%1; \n\t" - "and %0, %2; \n\t" - M32R_UNLOCK" %0, @%1; \n\t" - : "=&r" (tmp) - : "r" (a), "r" (~mask) - : "memory" -#ifdef CONFIG_CHIP_M32700_TS1 - , "r6" -#endif /* CONFIG_CHIP_M32700_TS1 */ - ); - local_irq_restore(flags); -} - -/** - * change_bit - Toggle a bit in memory - * @nr: Bit to clear - * @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) -{ - __u32 mask; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "r6", "%1") - M32R_LOCK" %0, @%1; \n\t" - "xor %0, %2; \n\t" - M32R_UNLOCK" %0, @%1; \n\t" - : "=&r" (tmp) - : "r" (a), "r" (mask) - : "memory" -#ifdef CONFIG_CHIP_M32700_TS1 - , "r6" -#endif /* CONFIG_CHIP_M32700_TS1 */ - ); - local_irq_restore(flags); -} - -/** - * 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) -{ - __u32 mask, oldbit; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "%1", "%2") - M32R_LOCK" %0, @%2; \n\t" - "mv %1, %0; \n\t" - "and %0, %3; \n\t" - "or %1, %3; \n\t" - M32R_UNLOCK" %1, @%2; \n\t" - : "=&r" (oldbit), "=&r" (tmp) - : "r" (a), "r" (mask) - : "memory" - ); - local_irq_restore(flags); - - return (oldbit != 0); -} - -/** - * test_and_clear_bit - Clear 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_clear_bit(int nr, volatile void * addr) -{ - __u32 mask, oldbit; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "%1", "%3") - M32R_LOCK" %0, @%3; \n\t" - "mv %1, %0; \n\t" - "and %0, %2; \n\t" - "not %2, %2; \n\t" - "and %1, %2; \n\t" - M32R_UNLOCK" %1, @%3; \n\t" - : "=&r" (oldbit), "=&r" (tmp), "+r" (mask) - : "r" (a) - : "memory" - ); - local_irq_restore(flags); - - return (oldbit != 0); -} - -/** - * test_and_change_bit - Change 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_change_bit(int nr, volatile void * addr) -{ - __u32 mask, oldbit; - volatile __u32 *a = addr; - unsigned long flags; - unsigned long tmp; - - a += (nr >> 5); - mask = (1 << (nr & 0x1F)); - - local_irq_save(flags); - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "%1", "%2") - M32R_LOCK" %0, @%2; \n\t" - "mv %1, %0; \n\t" - "and %0, %3; \n\t" - "xor %1, %3; \n\t" - M32R_UNLOCK" %1, @%2; \n\t" - : "=&r" (oldbit), "=&r" (tmp) - : "r" (a), "r" (mask) - : "memory" - ); - local_irq_restore(flags); - - return (oldbit != 0); -} - -#include <asm-generic/bitops/non-atomic.h> -#include <asm-generic/bitops/ffz.h> -#include <asm-generic/bitops/__ffs.h> -#include <asm-generic/bitops/fls.h> -#include <asm-generic/bitops/__fls.h> -#include <asm-generic/bitops/fls64.h> - -#ifdef __KERNEL__ - -#include <asm-generic/bitops/sched.h> -#include <asm-generic/bitops/find.h> -#include <asm-generic/bitops/ffs.h> -#include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> - -#endif /* __KERNEL__ */ - -#ifdef __KERNEL__ - -#include <asm-generic/bitops/le.h> -#include <asm-generic/bitops/ext2-atomic.h> - -#endif /* __KERNEL__ */ - -#endif /* _ASM_M32R_BITOPS_H */ |
