loader: add special logic to distinguish nouveau from nouveau_vieux

There are a lot of different pci ids supported by nouveau, and more are
added all the time. The relevant distinguisher between drivers is the
chipset id.

Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Cc: "10.1" <[email protected]>

1 files changed, 55 insertions, 0 deletions

diff --git a/src/loader/pci_id_driver_map.c b/src/loader/pci_id_driver_map.c
new file mode 100644
index 00000000000..cb6f705acbd
--- /dev/null
+++ b/src/loader/pci_id_driver_map.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2014 Ilia Mirkin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+int is_nouveau_vieux(int fd);
+
+#ifndef __NOT_HAVE_DRM_H
+
+#include <xf86drm.h>
+#include <nouveau_drm.h>
+
+static int
+nouveau_chipset(int fd)
+{
+   struct drm_nouveau_getparam gp = { NOUVEAU_GETPARAM_CHIPSET_ID, 0 };
+   int ret;
+
+   ret = drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &gp, sizeof(gp));
+   if (ret)
+      return -1;
+
+   return gp.value;
+}
+
+int
+is_nouveau_vieux(int fd)
+{
+   int chipset = nouveau_chipset(fd);
+   return chipset > 0 && chipset < 0x30;
+}
+
+#else
+
+int is_nouveau_vieux(int fd) { return 0; }
+
+#endif