86Box/src/device.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.
 *
 *		Implementation of the generic device interface to handle
 *		all devices attached to the emulator.
 *
 * Version:	@(#)device.c	1.0.4	2017/10/01
 *
 * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
 *		Miran Grca, <mgrca8@gmail.com>
 *		Copyright 2008-2016 Sarah Walker.
 *		Copyright 2016,2017 Miran Grca.
 */
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <wchar.h>
#include "ibm.h"
#include "cpu/cpu.h"
#include "config.h"
#include "device.h"
#include "machine/machine.h"
#include "sound/sound.h"


#define DEVICE_MAX	256			/* max # of devices */


static void *device_priv[DEVICE_MAX];
static device_t *devices[DEVICE_MAX];
static device_t *current_device;


void device_init(void)
{
	memset(devices, 0x00, sizeof(devices));
}


void device_add(device_t *d)
{
	int c = 0;
	void *priv = NULL;
        
	while (devices[c] != NULL && c < 256)
                c++;
	if (c >= DEVICE_MAX)
                fatal("device_add : too many devices\n");
        
	current_device = d;
        
	if (d->init != NULL)
        {
                priv = d->init();
                if (priv == NULL)
                        fatal("device_add : device init failed\n");
        }
        
        devices[c] = d;
        device_priv[c] = priv;        
}


void device_close_all(void)
{
        int c;

        for (c=0; c<DEVICE_MAX; c++)
        {
                if (devices[c] != NULL)
                {
                        if (devices[c]->close != NULL)
                                devices[c]->close(device_priv[c]);
                        devices[c] = device_priv[c] = NULL;
                }
        }
}


void *device_get_priv(device_t *d)
{
	int c;

        for (c=0; c<DEVICE_MAX; c++)
        {
                if (devices[c] != NULL)
                {
                        if (devices[c] == d)
                                return device_priv[c];
                }
        }

	return NULL;
}


int device_available(device_t *d)
{
#ifdef RELEASE_BUILD
        if (d->flags & DEVICE_NOT_WORKING)
                return 0;
#endif
        if (d->available)
                return d->available();
                
        return 1;        
}


void device_speed_changed(void)
{
        int c;
        
        for (c=0; c<DEVICE_MAX; c++)
        {
                if (devices[c] != NULL)
                {
                        if (devices[c]->speed_changed != NULL)
                        {
                                devices[c]->speed_changed(device_priv[c]);
                        }
                }
        }
        
        sound_speed_changed();
}


void device_force_redraw(void)
{
        int c;
        
        for (c=0; c<DEVICE_MAX; c++)
        {
                if (devices[c] != NULL)
                {
                        if (devices[c]->force_redraw != NULL)
                        {
                                devices[c]->force_redraw(device_priv[c]);
                        }
                }
        }
}


char *device_add_status_info(char *s, int max_len)
{
        int c;
        
        for (c=0; c<DEVICE_MAX; c++)
        {
                if (devices[c] != NULL)
                {
                        if (devices[c]->add_status_info != NULL)
                                devices[c]->add_status_info(s, max_len, device_priv[c]);
                }
        }

	return NULL;
}


int device_get_config_int(char *s)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_int(current_device->name, s, config->default_int);

                config++;
        }
        return 0;
}


int device_get_config_int_ex(char *s, int default_int)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_int(current_device->name, s, default_int);

                config++;
        }
        return default_int;
}


int device_get_config_hex16(char *s)
{
        device_config_t *config = current_device->config;

        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_hex16(current_device->name, s, config->default_int);

                config++;
        }
        return 0;
}


int device_get_config_hex20(char *s)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_hex20(current_device->name, s, config->default_int);

                config++;
        }
        return 0;
}


int device_get_config_mac(char *s, int default_int)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_mac(current_device->name, s, default_int);

                config++;
        }
        return default_int;
}


void device_set_config_int(char *s, int val)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
		{
                        config_set_int(current_device->name, s, val);
			return;
		}

                config++;
        }
}


void device_set_config_hex16(char *s, int val)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
		{
                        config_set_hex16(current_device->name, s, val);
			return;
		}

                config++;
        }
}


void device_set_config_hex20(char *s, int val)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
		{
                        config_set_hex20(current_device->name, s, val);
			return;
		}

                config++;
        }
}


void device_set_config_mac(char *s, int val)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
		{
                        config_set_mac(current_device->name, s, val);
			return;
		}

                config++;
        }
}


char *device_get_config_string(char *s)
{
        device_config_t *config = current_device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_string(current_device->name, s, config->default_string);

                config++;
        }
        return NULL;
}


int machine_get_config_int(char *s)
{
        device_t *device = machine_getdevice(machine);
        device_config_t *config;

        if (!device)
                return 0;                

        config = device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_int(device->name, s, config->default_int);

                config++;
        }
        return 0;
}


char *machine_get_config_string(char *s)
{
        device_t *device = machine_getdevice(machine);
        device_config_t *config;
        
        if (!device)
                return 0;                

        config = device->config;
        
        while (config && config->type != -1)
        {
                if (!strcmp(s, config->name))
                        return config_get_string(device->name, s, config->default_string);

                config++;
        }
        return NULL;
}