/************************************************************************** * 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 */ int roll; /* Roll applied to the GTT entries */ }; 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); extern void psb_gtt_roll(struct drm_device *dev, struct gtt_range *gt, int roll); #endif