158 lines
3.3 KiB
C
158 lines
3.3 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Advanced Power Management emulation.
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*
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*
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2019 Miran Grca.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include "cpu.h"
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#include <86box/device.h>
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#include <86box/io.h>
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#include <86box/apm.h>
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#ifdef ENABLE_APM_LOG
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int apm_do_log = ENABLE_APM_LOG;
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static void
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apm_log(const char *fmt, ...)
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{
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va_list ap;
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if (apm_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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# define apm_log(fmt, ...)
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#endif
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void
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apm_set_do_smi(apm_t *dev, uint8_t do_smi)
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{
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dev->do_smi = do_smi;
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}
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static void
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apm_out(uint16_t port, uint8_t val, void *priv)
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{
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apm_t *dev = (apm_t *) priv;
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apm_log("[%04X:%08X] APM write: %04X = %02X (BX = %04X, CX = %04X)\n", CS, cpu_state.pc, port, val, BX, CX);
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port &= 0x0001;
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if (port == 0x0000) {
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dev->cmd = val;
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if (dev->do_smi)
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smi_raise();
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} else
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dev->stat = val;
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}
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static uint8_t
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apm_in(uint16_t port, void *priv)
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{
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const apm_t *dev = (apm_t *) priv;
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uint8_t ret = 0xff;
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port &= 0x0001;
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if (port == 0x0000)
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ret = dev->cmd;
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else
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ret = dev->stat;
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apm_log("[%04X:%08X] APM read: %04X = %02X\n", CS, cpu_state.pc, port, ret);
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return ret;
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}
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static void
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apm_reset(void *priv)
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{
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apm_t *dev = (apm_t *) priv;
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dev->cmd = dev->stat = 0x00;
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}
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static void
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apm_close(void *priv)
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{
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apm_t *dev = (apm_t *) priv;
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free(dev);
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}
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static void *
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apm_init(const device_t *info)
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{
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apm_t *dev = (apm_t *) malloc(sizeof(apm_t));
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memset(dev, 0, sizeof(apm_t));
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if (info->local == 0)
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io_sethandler(0x00b2, 0x0002, apm_in, NULL, NULL, apm_out, NULL, NULL, dev);
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return dev;
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}
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const device_t apm_device = {
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.name = "Advanced Power Management",
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.internal_name = "apm",
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.flags = 0,
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.local = 0,
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.init = apm_init,
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.close = apm_close,
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.reset = NULL,
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.available = NULL,
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = NULL
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};
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const device_t apm_pci_device = {
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.name = "Advanced Power Management (PCI)",
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.internal_name = "apm_pci",
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.flags = DEVICE_PCI,
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.local = 0,
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.init = apm_init,
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.close = apm_close,
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.reset = apm_reset,
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.available = NULL,
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = NULL
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};
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const device_t apm_pci_acpi_device = {
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.name = "Advanced Power Management (PCI)",
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.internal_name = "apm_pci_acpi",
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.flags = DEVICE_PCI,
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.local = 1,
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.init = apm_init,
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.close = apm_close,
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.reset = apm_reset,
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.available = NULL,
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = NULL
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};
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