util.h

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/*
 * Copyright (c) 2022 Adrian "asie" Siekierka
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source distribution.
 */
 
#ifndef __WF_LIBWS_UTIL_H__
#define __WF_LIBWS_UTIL_H__
 
#include <stdint.h>
#include <wonderful.h>
 
static inline uint32_t ws_ptr_to_linear(const void __far* src) {
    return ((((uint32_t) src) >> 12) & 0xFFFF0) + ((uint16_t) ((uint32_t) src));
}
 
void ws_portcpy(uint16_t port, const void __far* src, uint16_t count);
 
__attribute__((no_assume_ds_data, no_assume_ss_data))
void ws_busywait(uint16_t us);
 
#endif /* __WF_LIBWS_UTIL_H__ */