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/*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
* Copyright (C) 2010 chysun2000@gmail.com
*
* This file is part of nios2sim-ng.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <stdio.h>
#include "nios2sim-ng.h"
#include "device.h"
#include "uart.h"
#include "jtag_uart.h"
static struct device *devices[] = {
&uart_core,
&jtag_uart_core,
};
#define DEVICES_COUNT ARRAY_SIZE(devices)
bool device_generic_is_dev_addr(struct device *dev, uint32_t addr)
{
if (addr >= dev->base && addr < dev->base + dev->size)
return true;
return false;
}
int device_init_all(void)
{
unsigned int i;
int ret = 0;
for (i = 0; i < DEVICES_COUNT; i++) {
struct device *dev = devices[i];
if (unlikely(dev->init == NULL))
continue;
ret = dev->init(dev);
if (ret) {
err("Failed to initialize device '%s'\n", dev->name);
break;
}
if (dev->is_dev_addr == NULL)
dev->is_dev_addr = device_generic_is_dev_addr;
vinfo("%s at 0x%08x - 0x%08x\n", dev->name, dev->base,
(uint32_t)(dev->base + dev->size));
}
return ret;
}
/**
* Get device mapped at a specific address.
*
* @param addr address to get the mapped device for
* @return pointer to the device mapped at addr, NULL if no device is
* mapped there
*/
struct device *device_get_by_addr(uint32_t addr)
{
unsigned int i;
struct device *dev = NULL;
for (i = 0; i < DEVICES_COUNT; i++) {
dev = devices[i];
if (unlikely(dev->is_dev_addr == NULL))
continue;
if (dev->is_dev_addr(dev, addr))
return dev;
}
return NULL;
}
void device_simulate_all(void)
{
unsigned int i;
struct device *dev;
for (i = 0; i < DEVICES_COUNT; i++) {
dev = devices[i];
if (likely(dev->simulate != NULL))
dev->simulate(dev);
}
}
void io_register_init(struct io_register *reg, uint32_t addr,
uint32_t valid, uint32_t readonly, uint32_t value)
{
reg->addr = addr;
reg->valid_mask = valid;
reg->readonly_mask = readonly;
reg->value = value;
}
uint32_t io_register_read(struct io_register *reg)
{
return reg->value & reg->valid_mask;
}
void io_register_write(struct io_register *reg, uint32_t value)
{
reg->value = value & ~(reg->readonly_mask);
}
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