| /* 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 */ |
| }; |
| |
| #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 int psb_gtt_restore(struct drm_device *dev); |
| #endif |
