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From f374410a00145d1703633547e90f10d43b3ded9f Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 27 Apr 2017 10:52:24 +1000
Subject: [PATCH] xfree86: use modesetting driver by default on GeForce 8 and
newer
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
hw/xfree86/common/xf86pciBus.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/hw/xfree86/common/xf86pciBus.c b/hw/xfree86/common/xf86pciBus.c
index 682e723..2c36a3d 100644
--- a/hw/xfree86/common/xf86pciBus.c
+++ b/hw/xfree86/common/xf86pciBus.c
@@ -37,6 +37,7 @@
#include <unistd.h>
#include <X11/X.h>
#include <pciaccess.h>
+#include <xf86drm.h>
#include "os.h"
#include "Pci.h"
#include "xf86.h"
@@ -1146,8 +1147,29 @@ xf86VideoPtrToDriverList(struct pci_device *dev,
break;
case 0x10de:
case 0x12d2:
+ {
+ char busid[32];
+ int fd;
+
+ snprintf(busid, sizeof(busid), "pci:%04x:%02x:%02x.%d",
+ dev->domain, dev->bus, dev->dev, dev->func);
+
+ /* 'modesetting' is preferred for GeForce 8 and newer GPUs */
+ fd = drmOpenWithType("nouveau", busid, DRM_NODE_RENDER);
+ if (fd >= 0) {
+ uint64_t args[] = { 11 /* NOUVEAU_GETPARAM_CHIPSET_ID */, 0 };
+ int ret = drmCommandWriteRead(fd, 0 /* DRM_NOUVEAU_GETPARAM */,
+ &args, sizeof(args));
+ drmClose(fd);
+ if (ret == 0) {
+ if (args[1] == 0x050 || args[1] >= 0x80)
+ break;
+ }
+ }
+
driverList[0] = "nouveau";
break;
+ }
case 0x1106:
driverList[0] = "openchrome";
break;
--
1.8.3.1