77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*
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* Copyright (c) 2008 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef DEV_REG_H_
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#define DEV_REG_H_
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#include <stdint.h>
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#define REG64(addr) ((volatile uint64_t *)(uintptr_t)(addr))
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#define REG32(addr) ((volatile uint32_t *)(uintptr_t)(addr))
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#define REG16(addr) ((volatile uint16_t *)(uintptr_t)(addr))
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#define REG8(addr) ((volatile uint8_t *)(uintptr_t)(addr))
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#define RMWREG64(addr, startbit, width, val) *REG64(addr) = (*REG64(addr) & ~((((uint64_t)1u<<(width)) - 1u) << (startbit))) | ((uint64_t)(val) << (startbit))
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#define RMWREG32(addr, startbit, width, val) *REG32(addr) = (*REG32(addr) & ~((((uint32_t)1u<<(width)) - 1u) << (startbit))) | ((uint32_t)(val) << (startbit))
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#define RMWREG16(addr, startbit, width, val) *REG16(addr) = (*REG16(addr) & ~((((uint16_t)1u<<(width)) - 1u) << (startbit))) | ((uint16_t)(val) << (startbit))
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#define RMWREG8(addr, startbit, width, val) *REG8(addr) = (*REG8(addr) & ~((((uint8_t)1u<<(width)) - 1u) << (startbit))) | ((uint8_t)(val) << (startbit))
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#define writeq(v, a) (*REG64(a) = (v))
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#define readq(a) (*REG64(a))
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#define writel(v, a) (*REG32(a) = (v))
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#define readl(a) (*REG32(a))
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#define writew(v, a) (*REG16(a) = (v))
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#define readw(a) (*REG16(a))
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#define writeb(v, a) (*REG8(a) = (v))
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#define readb(a) (*REG8(a))
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static inline
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void clrbits_32(volatile uint32_t *addr, uint32_t clear)
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{
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*addr &= ~clear;
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}
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static inline
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void setbits_32(volatile uint32_t *addr, uint32_t set)
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{
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*addr |= set;
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}
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static inline
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void clrsetbits_32(volatile uint32_t *addr, uint32_t clear, uint32_t set)
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{
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uint32_t temp;
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temp = *addr;
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temp &= ~clear;
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temp |= set;
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*addr = temp;
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}
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#define CLRBITS_32(addr, clear) clrbits_32(REG32(addr), clear)
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#define SETBITS_32(addr, set) setbits_32(REG32(addr), set)
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#define CLRSETBITS_32(addr, clear, set) clrsetbits_32(REG32(addr), clear, set)
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#endif
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