drm: add OS_HAS_GEM option.

To build i915 driver pass OS_HAS_GEM=1 to make for now

4 files changed, 41 insertions, 1 deletions

diff --git a/linux-core/Makefile b/linux-core/Makefile
index 55dfb77c..4edec312 100644
--- a/linux-core/Makefile
+++ b/linux-core/Makefile
@@ -270,6 +270,10 @@ ifneq ($(PAGE_AGP),0)
 EXTRA_CFLAGS += -DHAVE_PAGE_AGP
 endif
 
+ifeq ($(OS_HAS_GEM), 1)
+EXTRA_CFLAGS += -DOS_HAS_GEM=1
+endif
+
 # Start with all modules turned off.
 CONFIG_DRM_GAMMA := n
 CONFIG_DRM_TDFX := n
@@ -332,8 +336,10 @@ ifneq (,$(findstring i810,$(DRM_MODULES)))
 CONFIG_DRM_I810 := m
 endif
 ifneq (,$(findstring i915,$(DRM_MODULES)))
+ifeq ($(OS_HAS_GEM), 1)
 CONFIG_DRM_I915 := m
 endif
+endif
 
 GIT_REVISION := $(shell cd "$(DRMSRCDIR)" && git-describe --abbrev=17)
 ifneq ($(GIT_REVISION),)
diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h
index 7ddc2c97..c7f72e33 100644
--- a/linux-core/drm_compat.h
+++ b/linux-core/drm_compat.h
@@ -369,4 +369,12 @@ extern struct page *drm_vm_sg_nopage(struct vm_area_struct *vma,
 #define drm_core_ioremap_wc drm_core_ioremap
 #endif
 
+#ifndef OS_HAS_GEM
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27))
+#define OS_HAS_GEM 1
+#else
+#define OS_HAS_GEM 0
+#endif
+#endif
+
 #endif
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index efd6416f..31a98fe8 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -151,9 +151,11 @@ static struct drm_ioctl_desc drm_ioctls[] = {
 
 	DRM_IOCTL_DEF(DRM_IOCTL_MM_INFO, drm_mm_info_ioctl, 0),
 
+#if OS_HAS_GEM
 	DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0),
 	DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH),
 	DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH),
+#endif
 };
 
 #define DRM_CORE_IOCTL_COUNT	ARRAY_SIZE( drm_ioctls )
diff --git a/linux-core/drm_gem.c b/linux-core/drm_gem.c
index 434155b3..ce930265 100644
--- a/linux-core/drm_gem.c
+++ b/linux-core/drm_gem.c
@@ -25,6 +25,12 @@
  *
  */
 
+#include <linux/version.h>
+
+#include "drmP.h"
+
+#if OS_HAS_GEM
+
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/mm.h>
@@ -34,7 +40,6 @@
 #include <linux/module.h>
 #include <linux/mman.h>
 #include <linux/pagemap.h>
-#include "drmP.h"
 
 /** @file drm_gem.c
  *
@@ -418,3 +423,22 @@ drm_gem_object_handle_free(struct kref *kref)
 }
 EXPORT_SYMBOL(drm_gem_object_handle_free);
 
+#else
+
+int drm_gem_init(struct drm_device *dev)
+{
+	return 0;
+}
+
+void drm_gem_open(struct drm_device *dev, struct drm_file *file_private)
+{
+
+}
+
+void
+drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
+{
+
+}
+
+#endif