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- /* SPDX-License-Identifier: GPL-2.0-only */
- /**************************************************************************
- * Copyright (c) 2007-2008, Intel Corporation.
- * All Rights Reserved.
- *
- **************************************************************************/
- #ifndef _PSB_GTT_H_
- #define _PSB_GTT_H_
- #include <drm/drm_gem.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 */
- int roll; /* Roll applied to the GTT entries */
- };
- #define to_gtt_range(x) container_of(x, struct gtt_range, gem)
- extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
- const char *name, int backed,
- u32 align);
- 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);
- extern void psb_gtt_roll(struct drm_device *dev,
- struct gtt_range *gt, int roll);
- extern int psb_gtt_restore(struct drm_device *dev);
- #endif
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