Karina
40 lines
800 B
C
40 lines
800 B
C
// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright (c) 2025 0xKarinyash
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#pragma once
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#define MASTER_COMMAND 0x20
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#define MASTER_DATA 0x21
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#define SLAVE_COMMAND 0xA0
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#define SLAVE_DATA 0xA1
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static inline void outb(unsigned short port, unsigned char val) {
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__asm__ volatile(
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"outb %0, %1"
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:
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: "a"(val),
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"Nd"(port) );
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}
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static inline unsigned char inb(unsigned short port) {
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unsigned char ret;
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__asm__ volatile(
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"inb %1, %0"
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: "=a"(ret)
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: "Nd"(port)
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);
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return ret;
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}
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// sending junk to 0x80 (unused) to skip few tacts
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// not ideal i know
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static inline void io_wait() {
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outb(0x80, 0x0);
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}
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static inline void outb_wait(unsigned short port, unsigned char val) {
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outb(port, val);
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io_wait();
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}
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