drm/ttm: Define a single DRM_FILE_PAGE_OFFSET constant

Most TTM drivers define the constant DRM_FILE_PAGE_OFFSET of the same
value. The only exception is vboxvideo, which is being converted to the
new offset by this patch. Unifying the constants in a single place
simplifies the driver code.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -51,8 +51,6 @@
 #include "amdgpu_sdma.h"
 #include "bif/bif_4_1_d.h"
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static int amdgpu_map_buffer(struct ttm_buffer_object *bo,
 			     struct ttm_mem_reg *mem, unsigned num_pages,
 			     uint64_t offset, unsigned window,

drivers/gpu/drm/ast/ast_drv.h

@@ -353,8 +353,6 @@ extern int ast_dumb_mmap_offset(struct drm_file *file,
 				uint32_t handle,
 				uint64_t *offset);
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 int ast_mm_init(struct ast_private *ast);
 void ast_mm_fini(struct ast_private *ast);
 

drivers/gpu/drm/bochs/bochs.h

@@ -101,8 +101,6 @@ static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
 	return container_of(gem, struct bochs_bo, gem);
 }
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
 {
 	return drm_vma_node_offset_addr(&bo->bo.vma_node);

drivers/gpu/drm/cirrus/cirrus_drv.h

@@ -169,7 +169,6 @@ cirrus_bo(struct ttm_buffer_object *bo)
 
 
 #define to_cirrus_obj(x) container_of(x, struct cirrus_gem_object, base)
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 
 				/* cirrus_main.c */
 int cirrus_device_init(struct cirrus_device *cdev,

drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c

@@ -21,8 +21,6 @@
 
 #include "hibmc_drm_drv.h"
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static inline struct hibmc_drm_private *
 hibmc_bdev(struct ttm_bo_device *bd)
 {

drivers/gpu/drm/mgag200/mgag200_drv.h

@@ -269,7 +269,6 @@ mgag200_dumb_mmap_offset(struct drm_file *file,
 struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev);
 void mgag200_i2c_destroy(struct mga_i2c_chan *i2c);
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 void mgag200_ttm_placement(struct mgag200_bo *bo, int domain);
 
 static inline int mgag200_bo_reserve(struct mgag200_bo *bo, bool no_wait)

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -60,8 +60,6 @@
 struct nouveau_channel;
 struct platform_device;
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 #include "nouveau_fence.h"
 #include "nouveau_bios.h"
 #include "nouveau_vmm.h"

drivers/gpu/drm/qxl/qxl_drv.h

@@ -65,9 +65,6 @@
 extern int qxl_num_crtc;
 extern int qxl_max_ioctls;
 
-#define DRM_FILE_OFFSET 0x100000000ULL
-#define DRM_FILE_PAGE_OFFSET (DRM_FILE_OFFSET >> PAGE_SHIFT)
-
 #define QXL_INTERRUPT_MASK (\
 	QXL_INTERRUPT_DISPLAY |\
 	QXL_INTERRUPT_CURSOR |\

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -45,8 +45,6 @@
 #include "radeon_reg.h"
 #include "radeon.h"
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
 static void radeon_ttm_debugfs_fini(struct radeon_device *rdev);
 

drivers/gpu/drm/virtio/virtgpu_ttm.c

@@ -37,8 +37,6 @@
 
 #include <linux/delay.h>
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 static struct
 virtio_gpu_device *virtio_gpu_get_vgdev(struct ttm_bo_device *bdev)
 {

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -851,7 +851,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 	ret = ttm_bo_device_init(&dev_priv->bdev,
 				 &vmw_bo_driver,
 				 dev->anon_inode->i_mapping,
-				 VMWGFX_FILE_PAGE_OFFSET,
+				 DRM_FILE_PAGE_OFFSET,
 				 false);
 	if (unlikely(ret != 0)) {
 		DRM_ERROR("Failed initializing TTM buffer object driver.\n");

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -48,7 +48,6 @@
 #define VMWGFX_DRIVER_MAJOR 2
 #define VMWGFX_DRIVER_MINOR 15
 #define VMWGFX_DRIVER_PATCHLEVEL 0
-#define VMWGFX_FILE_PAGE_OFFSET 0x00100000
 #define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
 #define VMWGFX_MAX_RELOCATIONS 2048
 #define VMWGFX_MAX_VALIDATIONS 2048

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c

@@ -33,7 +33,7 @@ int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
 	struct drm_file *file_priv;
 	struct vmw_private *dev_priv;
 
-	if (unlikely(vma->vm_pgoff < VMWGFX_FILE_PAGE_OFFSET)) {
+	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
 		DRM_ERROR("Illegal attempt to mmap old fifo space.\n");
 		return -EINVAL;
 	}

drivers/staging/vboxvideo/vbox_drv.h

@@ -209,8 +209,6 @@ int vbox_dumb_mmap_offset(struct drm_file *file,
 			  struct drm_device *dev,
 			  u32 handle, u64 *offset);
 
-#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
-
 int vbox_mm_init(struct vbox_private *vbox);
 void vbox_mm_fini(struct vbox_private *vbox);
 

include/drm/ttm/ttm_bo_driver.h

@@ -49,6 +49,8 @@
 #define TTM_MEMTYPE_FLAG_MAPPABLE      (1 << 1)	/* Memory mappable */
 #define TTM_MEMTYPE_FLAG_CMA           (1 << 3)	/* Can't map aperture */
 
+#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
+
 struct ttm_mem_type_manager;
 
 struct ttm_mem_type_manager_func {