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#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <inttypes.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include "virtgpu_drm.h"
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <cairo.h>
#include <pixman.h>
#include "drmtools.h"
/* ------------------------------------------------------------------ */
#define ARRAY_SIZE(_x) (sizeof(_x)/sizeof(_x[0]))
/* ------------------------------------------------------------------ */
static struct {
uint64_t cap;
const char *name;
} virtio_caps[] = {
{ .cap = VIRTGPU_PARAM_3D_FEATURES, .name = "virgl-3d" },
#ifdef VIRTGPU_PARAM_CAPSET_QUERY_FIX
{ .cap = VIRTGPU_PARAM_CAPSET_QUERY_FIX, .name = "capset-fix" },
#endif
};
static uint64_t virtio_get_cap(uint64_t cap)
{
struct drm_virtgpu_getparam param = {
.param = cap,
.value = 0,
};
int rc;
rc = drmIoctl(fd, DRM_IOCTL_VIRTGPU_GETPARAM, ¶m);
if (rc != 0) {
fprintf(stderr, "ioctl DRM_IOCTL_VIRTGPU_GETPARAM(%" PRId64 "): %s\n",
cap, strerror(errno));
exit(1);
}
return param.value;
}
static void virtio_print_caps(void)
{
uint64_t value;
int i;
printf("virtio capabilities\n");
for (i = 0; i < ARRAY_SIZE(virtio_caps); i++) {
value = virtio_get_cap(virtio_caps[i].cap);
printf(" %s: %" PRId64 "\n", virtio_caps[i].name, value);
}
}
static void virtio_check(int cardno)
{
char syspath[128];
char symlink[128];
int len;
snprintf(syspath, sizeof(syspath), "/sys/class/drm/card%d", cardno);
len = readlink(syspath, symlink, sizeof(symlink));
if (len < 0) {
fprintf(stderr, "readlink %s: %s\n", syspath, strerror(errno));
exit(1);
}
symlink[len] = 0;
if (strstr(symlink, "/virtio") == NULL) {
fprintf(stderr, "card%d: not a virtio-gpu device\n", cardno);
exit(1);
}
}
/* ------------------------------------------------------------------ */
static void usage(FILE *fp)
{
fprintf(fp,
"\n"
"usage: virtiotest [ options ]\n"
"\n"
"options:\n"
" -h print this\n"
" -c <nr> pick card\n"
" -i print device info\n"
"\n");
}
int main(int argc, char **argv)
{
int card = 0;
char *output = NULL;
char *modename = NULL;
bool printinfo = false;
int c;
for (;;) {
c = getopt(argc, argv, "hic:");
if (c == -1)
break;
switch (c) {
case 'c':
card = atoi(optarg);
break;
case 'i':
printinfo = true;
break;
case 'h':
usage(stdout);
exit(0);
default:
usage(stderr);
exit(1);
}
}
virtio_check(card);
drm_init_dev(card, output, modename, false);
if (printinfo) {
virtio_print_caps();
}
drm_fini_dev();
return 0;
}
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