drm: Integrate VRAM MM into struct drm_device

[linux-2.6-block.git] / include / drm / drm_vram_mm_helper.h

diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h
index 5d45c6447fa4ec13557bee68c34a7f491898fb87..a8ffd8599b08579fbf485082d7b2cbd544daa61e 100644 (file)
--- a/include/drm/drm_vram_mm_helper.h
+++ b/include/drm/drm_vram_mm_helper.h
@@ -66,4 +66,37 @@ void drm_vram_mm_cleanup(struct drm_vram_mm *vmm);
 int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma,
                     struct drm_vram_mm *vmm);
 
+/*
+ * Helpers for integration with struct drm_device
+ */
+
+struct drm_vram_mm *drm_vram_helper_alloc_mm(
+       struct drm_device *dev, uint64_t vram_base, size_t vram_size,
+       const struct drm_vram_mm_funcs *funcs);
+void drm_vram_helper_release_mm(struct drm_device *dev);
+
+/*
+ * Helpers for &struct file_operations
+ */
+
+int drm_vram_mm_file_operations_mmap(
+       struct file *filp, struct vm_area_struct *vma);
+
+/**
+ * define DRM_VRAM_MM_FILE_OPERATIONS - default callback functions for \
+       &struct file_operations
+ *
+ * Drivers that use VRAM MM can use this macro to initialize
+ * &struct file_operations with default functions.
+ */
+#define DRM_VRAM_MM_FILE_OPERATIONS \
+       .llseek         = no_llseek, \
+       .read           = drm_read, \
+       .poll           = drm_poll, \
+       .unlocked_ioctl = drm_ioctl, \
+       .compat_ioctl   = drm_compat_ioctl, \
+       .mmap           = drm_vram_mm_file_operations_mmap, \
+       .open           = drm_open, \
+       .release        = drm_release \
+
 #endif