122 lines
2.1 KiB
C
122 lines
2.1 KiB
C
/*
|
|
* 86Box A hypervisor and IBM PC system emulator that specializes in
|
|
* running old operating systems and software designed for IBM
|
|
* PC systems and compatibles from 1981 through fairly recent
|
|
* system designs based on the PCI bus.
|
|
*
|
|
* This file is part of the 86Box distribution.
|
|
*
|
|
* Advanced Power Management emulation.
|
|
*
|
|
* Version: @(#)apm.c 1.0.0 2019/05/12
|
|
*
|
|
* Authors: Miran Grca, <mgrca8@gmail.com>
|
|
*
|
|
* Copyright 2019 Miran Grca.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#define HAVE_STDARG_H
|
|
#include "86box.h"
|
|
#include "cpu_new/cpu.h"
|
|
#include "device.h"
|
|
#include "io.h"
|
|
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t cmd,
|
|
stat;
|
|
} apm_t;
|
|
|
|
|
|
#ifdef ENABLE_APM_LOG
|
|
int apm_do_log = ENABLE_APM_LOG;
|
|
|
|
|
|
static void
|
|
apm_log(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (apm_do_log) {
|
|
va_start(ap, fmt);
|
|
pclog_ex(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
#else
|
|
#define apm_log(fmt, ...)
|
|
#endif
|
|
|
|
|
|
static void
|
|
apm_out(uint16_t port, uint8_t val, void *p)
|
|
{
|
|
apm_t *apm = (apm_t *) p;
|
|
|
|
apm_log("[%04X:%08X] APM write: %04X = %02X (BX = %04X, CX = %04X)\n", CS, cpu_state.pc, port, val, BX, CX);
|
|
|
|
port &= 0x0001;
|
|
|
|
if (port == 0x0000) apm->cmd = val;
|
|
else apm->stat = val;
|
|
|
|
smi_line = 1;
|
|
}
|
|
|
|
|
|
static uint8_t
|
|
apm_in(uint16_t port, void *p)
|
|
{
|
|
apm_t *apm = (apm_t *) p;
|
|
|
|
apm_log("[%04X:%08X] APM read: %04X = FF\n", CS, cpu_state.pc, port);
|
|
|
|
port &= 0x0001;
|
|
|
|
if (port == 0x0000)
|
|
return apm->cmd;
|
|
else
|
|
return apm->stat;
|
|
}
|
|
|
|
|
|
static void
|
|
apm_close(void *p)
|
|
{
|
|
apm_t *dev = (apm_t *)p;
|
|
|
|
free(dev);
|
|
}
|
|
|
|
|
|
static void
|
|
*apm_init(const device_t *info)
|
|
{
|
|
apm_t *apm = (apm_t *) malloc(sizeof(apm_t));
|
|
memset(apm, 0, sizeof(apm_t));
|
|
|
|
io_sethandler(0x00b2, 0x0002, apm_in, NULL, NULL, apm_out, NULL, NULL, apm);
|
|
|
|
return apm;
|
|
}
|
|
|
|
|
|
const device_t apm_device =
|
|
{
|
|
"Advanced Power Management",
|
|
0,
|
|
0,
|
|
apm_init,
|
|
apm_close,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|