intel: Disable incompatible features whilst hosted

Start adding the infrastructure to disable direct hardware access if X
is being run under a system compositor (aka "hosted").

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 15 insertions, 3 deletions

diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index 5dcf47fa..f86d93d5 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -3151,11 +3151,22 @@ sna_crtc_config_notify(ScreenPtr screen)
 	sna_mode_update(to_sna_from_screen(screen));
 }
 
+#if HAS_PIXMAP_SHARING
+#define sna_setup_provider(scrn) xf86ProviderSetup(scrn, NULL, "Intel")
+#else
+#define sna_setup_provider(scrn)
+#endif
+
 bool sna_mode_pre_init(ScrnInfoPtr scrn, struct sna *sna)
 {
 	struct sna_mode *mode = &sna->mode;
 	int i;
 
+	if (sna->flags & SNA_IS_HOSTED) {
+		sna_setup_provider(scrn);
+		return true;
+	}
+
 	mode->kmode = drmModeGetResources(sna->kgem.fd);
 	if (mode->kmode) {
 		xf86CrtcConfigInit(scrn, &sna_mode_funcs);
@@ -3172,9 +3183,7 @@ bool sna_mode_pre_init(ScrnInfoPtr scrn, struct sna *sna)
 		if (!xf86IsEntityShared(scrn->entityList[0]))
 			sna_mode_compute_possible_clones(scrn);
 
-#if HAS_PIXMAP_SHARING
-		xf86ProviderSetup(scrn, NULL, "Intel");
-#endif
+		sna_setup_provider(scrn);
 	} else {
 		if (!sna_mode_fake_init(sna))
 			return false;
@@ -3200,6 +3209,9 @@ sna_mode_close(struct sna *sna)
 	while (sna_mode_has_pending_events(sna))
 		sna_mode_wakeup(sna);
 
+	if (sna->flags & SNA_IS_HOSTED)
+		return;
+
 	for (i = 0; i < xf86_config->num_crtc; i++)
 		sna_crtc_disable_shadow(sna, to_sna_crtc(xf86_config->crtc[i]));
 }