Add support for server managed fds

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>

3 files changed, 34 insertions, 4 deletions

diff --git a/src/vmware_bootstrap.c b/src/vmware_bootstrap.c
index b30cf2b..1635876 100644
--- a/src/vmware_bootstrap.c
+++ b/src/vmware_bootstrap.c
@@ -30,6 +30,7 @@
 #endif
 
 #include "xf86.h"
+#include <xorgVersion.h>
 #include "compiler.h"
 #include "xf86Pci.h"		/* pci */
 #include "vm_device_version.h"
@@ -496,6 +497,10 @@ VMWareDriverFunc(ScrnInfoPtr pScrn,
 			      pScrn->yDpi / 2) / pScrn->yDpi;
       }
       return TRUE;
+#if XORG_VERSION_CURRENT >= XORG_VERSION_NUMERIC(1,15,99,902,0)
+   case SUPPORTS_SERVER_FDS:
+      return TRUE;
+#endif
    default:
       return FALSE;
    }
diff --git a/vmwgfx/vmwgfx_driver.c b/vmwgfx/vmwgfx_driver.c
index 7e5dc4e..03103a8 100644
--- a/vmwgfx/vmwgfx_driver.c
+++ b/vmwgfx/vmwgfx_driver.c
@@ -54,6 +54,10 @@
 
 #include <pciaccess.h>
 
+#ifdef XSERVER_PLATFORM_BUS
+#include "xf86platformBus.h"
+#endif
+
 #include "vmwgfx_driver.h"
 
 #include <saa.h>
@@ -243,6 +247,15 @@ static const xf86CrtcConfigFuncsRec crtc_config_funcs = {
     .resize = drv_crtc_resize
 };
 
+static Bool vmwgfx_use_server_fd(modesettingPtr ms)
+{
+#ifdef XF86_PDEV_SERVER_FD
+    return ms->platform_dev && (ms->platform_dev->flags & XF86_PDEV_SERVER_FD);
+#else
+    return FALSE;
+#endif
+}
+
 static Bool
 drv_init_drm(ScrnInfoPtr pScrn)
 {
@@ -253,6 +266,12 @@ drv_init_drm(ScrnInfoPtr pScrn)
 
 	ms->fd = vmwgfx_hosted_drm_fd(ms->hdriver, ms->hosted, ms->PciInfo);
 
+#ifdef ODEV_ATTRIB_FD
+	if (ms->fd < 0 && vmwgfx_use_server_fd(ms))
+	    ms->fd = xf86_get_platform_device_int_attrib(ms->platform_dev,
+	                                                 ODEV_ATTRIB_FD, -1);
+#endif
+
 	if (ms->fd < 0) {
 
 	    char bus_id[64];
@@ -472,6 +491,9 @@ drv_pre_init(ScrnInfoPtr pScrn, int flags)
 	goto out_err_bus;
     }
 
+    if (pEnt->location.type == BUS_PLATFORM)
+        ms->platform_dev = pEnt->location.id.plat;
+
     xf86SetPrimInitDone(pScrn->entityList[0]);
 
     ms->hdriver = vmwgfx_hosted_detect();
@@ -605,7 +627,7 @@ drv_pre_init(ScrnInfoPtr pScrn, int flags)
     free(ms->Options);
   out_depth:
   out_drm_version:
-    if (!vmwgfx_is_hosted(ms->hdriver))
+    if (!vmwgfx_is_hosted(ms->hdriver) && !vmwgfx_use_server_fd(ms))
 	close(ms->fd);
   out_no_drm:
     vmwgfx_hosted_destroy(ms->hdriver, ms->hosted);
@@ -783,8 +805,8 @@ drv_set_master(ScrnInfoPtr pScrn)
 {
     modesettingPtr ms = modesettingPTR(pScrn);
 
-    if (!vmwgfx_is_hosted(ms->hdriver) && !ms->isMaster &&
-	drmSetMaster(ms->fd) != 0) {
+    if (!vmwgfx_is_hosted(ms->hdriver) && !vmwgfx_use_server_fd(ms) &&
+            !ms->isMaster && drmSetMaster(ms->fd) != 0) {
 	if (errno == EINVAL) {
 	    xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
 		       "drmSetMaster failed: 2.6.29 or newer kernel required for "
@@ -1184,7 +1206,8 @@ drv_leave_vt(VT_FUNC_ARGS_DECL)
 
     vmwgfx_saa_drop_master(pScrn->pScreen);
 
-    if (!vmwgfx_is_hosted(ms->hdriver) && drmDropMaster(ms->fd))
+    if (!vmwgfx_is_hosted(ms->hdriver) && !vmwgfx_use_server_fd(ms) &&
+            drmDropMaster(ms->fd))
 	xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
 		   "drmDropMaster failed: %s\n", strerror(errno));
     ms->isMaster = FALSE;
diff --git a/vmwgfx/vmwgfx_driver.h b/vmwgfx/vmwgfx_driver.h
index c044a81..31dfc0f 100644
--- a/vmwgfx/vmwgfx_driver.h
+++ b/vmwgfx/vmwgfx_driver.h
@@ -83,6 +83,7 @@ enum xorg_throttling_reason {
 };
 
 struct vmwgfx_hosted;
+struct xf86_platform_device;
 
 typedef struct _modesettingRec
 {
@@ -98,6 +99,7 @@ typedef struct _modesettingRec
     int Chipset;
     EntityInfoPtr pEnt;
     struct pci_device *PciInfo;
+    struct xf86_platform_device *platform_dev;
 
     /* Accel */
     Bool accelerate_render;