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#define _BSD_SOURCE
#define _DEFAULT_SOURCE
#define _POSIX_C_SOURCE 199309L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <time.h>
#include <sched.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <pcilib.h>
#include <pcilib/bar.h>
#include <pcilib/kmem.h>
#define DEVICE "/dev/fpga0"
#define BAR PCILIB_BAR0
#define WR(addr, value) { *(uint32_t*)(bar + addr) = value; }
#define RD(addr, value) { value = *(uint32_t*)(bar + addr); }
void request(void* volatile ua) {
int fd = open("/sys/class/test/test0/test_request", O_RDWR);
if (fd >= 0) {
size_t bytes;
char res[64];
sprintf(res, "%p", ua);
write(fd, res, strlen(res));
lseek(fd, SEEK_SET, 0);
bytes = read(fd, res, sizeof(res) - 1);
printf("Res : ");
if (bytes < 0) {
puts("Error");
} else {
res[bytes] = 0;
puts(res);
}
close(fd);
} else {
printf("Error openning /sys/class/test/test0/test_request, errno %i\n", errno);
}
}
int main(int argc, char *argv[]) {
uint32_t i, j;
pcilib_t *pci;
pcilib_kmem_handle_t *kbuf;
void* volatile bar;
const pcilib_bar_info_t *bar_info;
pci = pcilib_open(DEVICE, PCILIB_MODEL_DETECT);
if (!pci) {
printf("pcilib_open\n");
exit(1);
}
kbuf = pcilib_alloc_kernel_memory(pci, PCILIB_KMEM_TYPE_PAGE, 1, 4096, 4096, 0, 0);
void* volatile ua = pcilib_kmem_get_ua(pci, kbuf);
uintptr_t pa = pcilib_kmem_get_pa(pci, kbuf);
printf("Kmem\n-----\n");
printf("User: %p\n", ua);
printf("HW : 0x%lx\n", pa);
request(ua);
printf("\n");
bar = pcilib_resolve_bar_address(pci, BAR, 0);
if (!bar) {
pcilib_close(pci);
printf("map bar\n");
exit(1);
}
bar_info = pcilib_get_bar_info(pci, BAR);
printf("Bar\n-----\n");
printf("User: %p\n", bar_info[BAR].virt_addr);
printf("HW : %p\n", bar_info[BAR].phys_addr);
request(bar_info[BAR].virt_addr);
printf("\n");
pcilib_free_kernel_memory(pci, kbuf, 0);
pcilib_close(pci);
}
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