From 55a27b58035f9ae644913a3feb337315b17f86e2 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 2 Dec 2019 11:51:27 +0100
Subject: some vgem bits

---
 drmtest.c  | 12 +++++++++++-
 drmtools.c | 23 +++++++++++++++++++++++
 drmtools.h |  1 +
 3 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/drmtest.c b/drmtest.c
index 8dc961c..b0c2907 100644
--- a/drmtest.c
+++ b/drmtest.c
@@ -336,6 +336,7 @@ static void usage(FILE *fp)
             "  -p           pixman mode\n"
             "  -a           autotest mode (don't print hardware info)\n"
             "  -d           run dma-buf tests\n"
+            "  -v           vgem dma-buf import test\n"
             "  -c <nr>      pick card\n"
             "  -o <name>    pick output\n"
             "  -s <secs>    set sleep time (default: 60)\n"
@@ -352,17 +353,19 @@ int main(int argc, char **argv)
     int card = 0;
     int secs = 60;
     int lease_fd = -1;
+    int vgem_fd = -1;
     char *output = NULL;
     char *format = NULL;
     char *modename = NULL;
     bool dmabuf = false;
     bool autotest = false;
     bool pixman = false;
+    bool vgem = false;
     int updatetest = 0;
     int c,i,pid,rc;
 
     for (;;) {
-        c = getopt(argc, argv, "hpdau:L:c:s:o:i:f:m:");
+        c = getopt(argc, argv, "hpdavu:L:c:s:o:i:f:m:");
         if (c == -1)
             break;
         switch (c) {
@@ -376,6 +379,9 @@ int main(int argc, char **argv)
         case 'a':
             autotest = true;
             break;
+        case 'v':
+            vgem = true;
+            break;
         case 'u':
             updatetest = atoi(optarg);
             break;
@@ -435,6 +441,10 @@ int main(int argc, char **argv)
     drm_init_dev(card, output, modename, false, lease_fd);
     drm_get_caps();
 
+    if (vgem) {
+        vgem_fd = drm_init_vgem();
+    }
+
     if (!fmt) {
         /* find first supported in list */
         for (i = 0; i < fmtcnt; i++) {
diff --git a/drmtools.c b/drmtools.c
index 7c029f6..5d2901e 100644
--- a/drmtools.c
+++ b/drmtools.c
@@ -813,6 +813,29 @@ void drm_init_dev(int devnr, const char *output,
     scrtc = drmModeGetCrtc(drm_fd, drm_enc->crtc_id);
 }
 
+int drm_init_vgem(void)
+{
+    char dev[64];
+    drmVersion *ver;
+    int fd, i;
+
+    for (i = 0; i < 128; i++) {
+        snprintf(dev, sizeof(dev), "/dev/dri/renderD%d", i + 128);
+        fd = device_open(dev);
+        if (fd < 0)
+            goto out;
+        ver = drmGetVersion(fd);
+        fprintf(stderr, "%d: %s\n", i, ver->name);
+        if (strcmp(ver->name, "vgem") == 0)
+            return fd;
+        close(fd);
+    }
+
+out:
+    fprintf(stderr, "vgem not found, driver not loaded?\n");
+    exit(1);
+}
+
 void drm_fini_dev(void)
 {
     /* restore crtc */
diff --git a/drmtools.h b/drmtools.h
index 1ea9cb9..255e651 100644
--- a/drmtools.h
+++ b/drmtools.h
@@ -44,6 +44,7 @@ extern drmVersion *version;
 void drm_init_dev(int devnr, const char *output,
                   const char *modename, bool need_dumb,
                   int lease_fd);
+int drm_init_vgem(void);
 void drm_fini_dev(void);
 void drm_show_fb(void);
 
-- 
cgit