user_example.c

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/ioctl.h>

typedef struct write_struct {
	uint64_t address;
	uint64_t value;
	uint32_t size;
	uint8_t  use_phys_to_virt;
} IOCTL_WRITE;

typedef struct read_struct {
	uint64_t address;
	uint32_t size;
	uint8_t  use_phys_to_virt;
} IOCTL_READ;

typedef struct alloc_struct {
	uint32_t size;
} IOCTL_ALLOC;

int32_t fd = 0;

void sleep_ms(int milliseconds) {
	usleep(milliseconds * 1000);
}

uint64_t alloc(uint32_t size) {
	IOCTL_ALLOC s;
	s.size = size;
	uint64_t addr = ioctl(fd, 0x1339, &s);
	printf("alloc: addr %p\n", (void*)addr);
	return addr;
}

void write_val(uint64_t address, uint64_t value, uint32_t size, uint32_t sleep_val, char phys_to_virt) {
	IOCTL_WRITE s;
	s.address = address;
	s.value = value;
	s.size = size;
	s.use_phys_to_virt = phys_to_virt;
	fflush(stdout);
	sleep_ms(sleep_val);
	ioctl(fd, 0x1337, &s);
}

uint32_t read_val(uint64_t address, uint32_t size, uint32_t sleep_val) {
	IOCTL_READ s;
	s.address = address;
	s.size = size;
	s.use_phys_to_virt = 0;
	fflush(stdout);
	sleep_ms(sleep_val);
	uint32_t res = ioctl(fd, 0x1338, &s);
	return res;
}

int main(int argc, char** argv) {
	fd = open("/dev/phyzone", O_RDWR);

	write_val(0xffcdf118, 0x4141, 2, 0, 0);
	printf("%x\n", read_val(0xffccf000, 2, 0));
	printf("%x\n", read_val(0xffccf002, 4, 0));
	printf("%x\n", read_val(0xffccf006, 8, 0));
}