From 2ade6917dacb0648aff33f81da4e63418374ec7e Mon Sep 17 00:00:00 2001
From: Lucas Fryzek <lfryzek@igalia.com>
Date: Thu, 2 Mar 2023 14:49:31 -0500
Subject: [PATCH] virgl: Add support for `get_screen_fd`

Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21654>
---
 src/gallium/drivers/virgl/virgl_screen.c        | 13 +++++++++++++
 src/gallium/drivers/virgl/virgl_winsys.h        |  2 ++
 src/gallium/winsys/virgl/drm/virgl_drm_winsys.c |  8 ++++++++
 3 files changed, 23 insertions(+)

diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 2db9aef280c..87aedd9c996 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -1101,6 +1101,18 @@ virgl_get_compiler_options(struct pipe_screen *pscreen,
    return &vscreen->compiler_options;
 }
 
+static int
+virgl_screen_get_fd(struct pipe_screen *pscreen)
+{
+   struct virgl_screen *vscreen = virgl_screen(pscreen);
+   struct virgl_winsys *vws = vscreen->vws;
+
+   if (vws->get_fd)
+      return vws->get_fd(vws);
+   else
+      return -1;
+}
+
 struct pipe_screen *
 virgl_create_screen(struct virgl_winsys *vws, const struct pipe_screen_config *config)
 {
@@ -1137,6 +1149,7 @@ virgl_create_screen(struct virgl_winsys *vws, const struct pipe_screen_config *c
    screen->vws = vws;
    screen->base.get_name = virgl_get_name;
    screen->base.get_vendor = virgl_get_vendor;
+   screen->base.get_screen_fd = virgl_screen_get_fd;
    screen->base.get_param = virgl_get_param;
    screen->base.get_shader_param = virgl_get_shader_param;
    screen->base.get_video_param = virgl_get_video_param;
diff --git a/src/gallium/drivers/virgl/virgl_winsys.h b/src/gallium/drivers/virgl/virgl_winsys.h
index 13e82b033b4..7e43b965962 100644
--- a/src/gallium/drivers/virgl/virgl_winsys.h
+++ b/src/gallium/drivers/virgl/virgl_winsys.h
@@ -52,6 +52,8 @@ struct virgl_winsys {
 
    void (*destroy)(struct virgl_winsys *vws);
 
+   int (*get_fd)(struct virgl_winsys *vws);
+
    int (*transfer_put)(struct virgl_winsys *vws,
                        struct virgl_hw_res *res,
                        const struct pipe_box *box,
diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
index 6ae63e75758..2d7cc32a69c 100644
--- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
+++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
@@ -1203,6 +1203,14 @@ static int virgl_init_context(int drmFD)
    return 0;
 }
 
+static int
+virgl_drm_winsys_get_fd(struct virgl_winsys *vws)
+{
+   struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws);
+
+   return vdws->fd;
+}
+
 static struct virgl_winsys *
 virgl_drm_winsys_create(int drmFD)
 {