| /* |
| * Copyright (c) 2020, Wind River Systems, Inc. |
| * Copyright (c) 2017, Oticon A/S |
| * Copyright (c) 2020, Synopsys |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* Memory bits manipulation functions in non-arch-specific C code */ |
| |
| #ifndef ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_ |
| #define ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_ |
| |
| #ifndef _ASMLANGUAGE |
| |
| #include <toolchain.h> |
| #include <zephyr/types.h> |
| #include <sys/sys_io.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| static ALWAYS_INLINE void sys_set_bit(mem_addr_t addr, unsigned int bit) |
| { |
| uint32_t temp = *(volatile uint32_t *)addr; |
| |
| *(volatile uint32_t *)addr = temp | (1 << bit); |
| } |
| |
| static ALWAYS_INLINE void sys_clear_bit(mem_addr_t addr, unsigned int bit) |
| { |
| uint32_t temp = *(volatile uint32_t *)addr; |
| |
| *(volatile uint32_t *)addr = temp & ~(1 << bit); |
| } |
| |
| static ALWAYS_INLINE int sys_test_bit(mem_addr_t addr, unsigned int bit) |
| { |
| uint32_t temp = *(volatile uint32_t *)addr; |
| |
| return temp & (1 << bit); |
| } |
| |
| static ALWAYS_INLINE |
| void sys_bitfield_set_bit(mem_addr_t addr, unsigned int bit) |
| { |
| /* Doing memory offsets in terms of 32-bit values to prevent |
| * alignment issues |
| */ |
| sys_set_bit(addr + ((bit >> 5) << 2), bit & 0x1F); |
| } |
| |
| static ALWAYS_INLINE |
| void sys_bitfield_clear_bit(mem_addr_t addr, unsigned int bit) |
| { |
| sys_clear_bit(addr + ((bit >> 5) << 2), bit & 0x1F); |
| } |
| |
| static ALWAYS_INLINE |
| int sys_bitfield_test_bit(mem_addr_t addr, unsigned int bit) |
| { |
| return sys_test_bit(addr + ((bit >> 5) << 2), bit & 0x1F); |
| } |
| |
| static ALWAYS_INLINE |
| int sys_test_and_set_bit(mem_addr_t addr, unsigned int bit) |
| { |
| int ret; |
| |
| ret = sys_test_bit(addr, bit); |
| sys_set_bit(addr, bit); |
| |
| return ret; |
| } |
| |
| static ALWAYS_INLINE |
| int sys_test_and_clear_bit(mem_addr_t addr, unsigned int bit) |
| { |
| int ret; |
| |
| ret = sys_test_bit(addr, bit); |
| sys_clear_bit(addr, bit); |
| |
| return ret; |
| } |
| |
| static ALWAYS_INLINE |
| int sys_bitfield_test_and_set_bit(mem_addr_t addr, unsigned int bit) |
| { |
| int ret; |
| |
| ret = sys_bitfield_test_bit(addr, bit); |
| sys_bitfield_set_bit(addr, bit); |
| |
| return ret; |
| } |
| |
| static ALWAYS_INLINE |
| int sys_bitfield_test_and_clear_bit(mem_addr_t addr, unsigned int bit) |
| { |
| int ret; |
| |
| ret = sys_bitfield_test_bit(addr, bit); |
| sys_bitfield_clear_bit(addr, bit); |
| |
| return ret; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_ */ |