| /************************************************************************** |
| * 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 |
