add virtiotest

1 files changed, 113 insertions, 0 deletions

diff --git a/virtiotest.c b/virtiotest.c
new file mode 100644
index 0000000..bd87073
--- /dev/null
+++ b/virtiotest.c
@@ -0,0 +1,113 @@
+#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"
+
+/* ------------------------------------------------------------------ */
+
+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 ret;
+
+    ret = ioctl(fd, DRM_VIRTGPU_GETPARAM, &param);
+    if (ret != 0) {
+        fprintf(stderr, "ioctl DRM_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 < sizeof(virtio_caps)/sizeof(virtio_caps[0]); i++) {
+        value = virtio_get_cap(virtio_caps[i].cap);
+        printf("    %s: %" PRId64 "\n", virtio_caps[i].name, value);
+    }
+}
+
+/* ------------------------------------------------------------------ */
+
+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);
+        }
+    }
+
+    drm_init_dev(card, output, modename, false);
+
+    if (printinfo) {
+        virtio_print_caps();
+    }
+
+    drm_fini_dev();
+    return 0;
+}