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#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include "dhahelper.h"
int main(int argc, char *argv[])
{
int fd;
int ret;
fd = open("/dev/dhahelper", O_RDWR);
ioctl(fd, DHAHELPER_GET_VERSION, &ret);
printf("api version: %d\n", ret);
if (ret != API_VERSION)
printf("incompatible api!\n");
{
dhahelper_memory_t mem;
mem.operation = MEMORY_OP_MAP;
//mem.start = 0xe0000000;
mem.start = 0xe4000008;
mem.offset = 0;
mem.size = 0x4000;
mem.ret = 0;
ret = ioctl(fd, DHAHELPER_MEMORY, &mem);
printf("ret: %s\n", strerror(errno));
mem.ret = (int)mmap(NULL, (size_t)mem.size, PROT_READ, MAP_SHARED, fd, (off_t)0);
printf("allocated to %p\n", mem.ret);
if (argc > 1)
if (mem.ret != 0)
{
int i;
for (i = 0; i < 256; i++)
printf("[%x] ", *(int *)(mem.ret+i));
printf("\n");
}
munmap((void *)mem.ret, mem.size);
mem.operation = MEMORY_OP_UNMAP;
mem.start = mem.ret;
ioctl(fd, DHAHELPER_MEMORY, &mem);
}
}
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