1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/gtt.h b/drivers/gpu/drm/gma500/gtt.h
new file mode 100644
index 000000000000..e0e1cb6f9bd6
--- /dev/null
+++ b/drivers/gpu/drm/gma500/gtt.h
@@ -0,0 +1,61 @@
+/**************************************************************************
+ * Copyright (c) 2007-2008, Intel Corporation.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ **************************************************************************/
+
+#ifndef _PSB_GTT_H_
+#define _PSB_GTT_H_
+
+#include <drm/drmP.h>
+
+/* This wants cleaning up with respect to the psb_dev and un-needed stuff */
+struct psb_gtt {
+        uint32_t gatt_start;
+        uint32_t mmu_gatt_start;
+        uint32_t gtt_start;
+        uint32_t gtt_phys_start;
+        unsigned gtt_pages;
+        unsigned gatt_pages;
+        unsigned long stolen_size;
+        unsigned long vram_stolen_size;
+        struct rw_semaphore sem;
+};
+
+/* Exported functions */
+extern int psb_gtt_init(struct drm_device *dev, int resume);
+extern void psb_gtt_takedown(struct drm_device *dev);
+
+/* Each gtt_range describes an allocation in the GTT area */
+struct gtt_range {
+        struct resource resource;       /* Resource for our allocation */
+        u32 offset;                     /* GTT offset of our object */
+        struct drm_gem_object gem;      /* GEM high level stuff */
+        int in_gart;                    /* Currently in the GART (ref ct) */
+        bool stolen;                    /* Backed from stolen RAM */
+        bool mmapping;                  /* Is mmappable */
+        struct page **pages;            /* Backing pages if present */
+        int npage;                      /* Number of backing pages */
+};
+
+extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
+                                                const char *name, int backed);
+extern void psb_gtt_kref_put(struct gtt_range *gt);
+extern void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt);
+extern int psb_gtt_pin(struct gtt_range *gt);
+extern void psb_gtt_unpin(struct gtt_range *gt);
+
+#endif