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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.
*/
#ifndef _DEVICE_H_
#define _DEVICE_H_
/* IRQs for all used devices shall be allocated here */
#define IRQ_TIMER 1
#define IRQ_UART 2
#define IRQ_JTAG_UART 3
#define IRQ_TO_MASK(irq) (1UL << (irq))
struct device {
const char *name;
uint32_t base;
size_t size;
uint32_t irq_mask;
int (*init)(struct device *dev);
bool (*is_dev_addr)(struct device *dev, uint32_t addr);
size_t (*read)(struct device *dev, uint32_t addr, uint32_t *data, size_t count);
size_t (*write)(struct device *dev, uint32_t addr, uint32_t *data, size_t count);
bool (*has_irq)(struct device *dev);
void (*simulate)(struct device *dev);
/* Private data */
void *priv;
};
extern bool device_generic_is_dev_addr(struct device *dev, uint32_t addr);
extern int device_init_all(void);
extern struct device *device_get_by_addr(uint32_t addr);
extern void device_simulate_all(void);
/*
* Device registers
*/
struct io_register {
uint32_t addr;
uint32_t valid_mask;
uint32_t readonly_mask;
uint32_t value;
};
#define REG_TO_OFF(reg) ((reg) * sizeof(uint32_t))
extern void io_register_init(struct io_register *reg, uint32_t addr,
uint32_t valid, uint32_t readonly, uint32_t value);
extern uint32_t io_register_read(struct io_register *reg);
extern void io_register_write(struct io_register *reg, uint32_t value);
#endif /* _DEVICE_H_ */
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