82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/*
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* Copyright (c) 2014, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* sortix/kernel/ioport.h
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* IO ports.
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*/
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#ifndef _INCLUDE_SORTIX_KERNEL_IOPORT_H
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#define _INCLUDE_SORTIX_KERNEL_IOPORT_H
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#if !(defined(__i386__) || defined(__x86_64__))
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#error "This hardware platform doesn't have IO ports"
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#endif
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#include <stdint.h>
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namespace Sortix {
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__attribute__((unused))
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static inline uint8_t outport8(uint16_t port, uint8_t value)
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{
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asm volatile ("outb %1, %0" : : "dN" (port), "a" (value));
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return value;
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}
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__attribute__((unused))
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static inline uint16_t outport16(uint16_t port, uint16_t value)
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{
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asm volatile ("outw %1, %0" : : "dN" (port), "a" (value));
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return value;
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}
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__attribute__((unused))
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static inline uint32_t outport32(uint16_t port, uint32_t value)
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{
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asm volatile ("outl %1, %0" : : "dN" (port), "a" (value));
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return value;
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}
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__attribute__((unused))
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static inline uint8_t inport8(uint16_t port)
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{
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uint8_t result;
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asm volatile("inb %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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__attribute__((unused))
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static inline uint16_t inport16(uint16_t port)
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{
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uint16_t result;
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asm volatile("inw %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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__attribute__((unused))
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static inline uint32_t inport32(uint16_t port)
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{
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uint32_t result;
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asm volatile("inl %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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bool wait_inport8_clear(uint16_t ioport, uint8_t bits, bool any, unsigned int msecs);
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bool wait_inport8_set(uint16_t ioport, uint8_t bits, bool any, unsigned int msecs);
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} // namespace Sortix
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#endif
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