forked from Minki/linux
a61127c213
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 111 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.567572064@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/**************************************************************************
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* Copyright (c) 2007-2008, Intel Corporation.
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* All Rights Reserved.
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*
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**************************************************************************/
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#ifndef _PSB_GTT_H_
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#define _PSB_GTT_H_
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#include <drm/drmP.h>
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#include <drm/drm_gem.h>
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/* This wants cleaning up with respect to the psb_dev and un-needed stuff */
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struct psb_gtt {
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uint32_t gatt_start;
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uint32_t mmu_gatt_start;
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uint32_t gtt_start;
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uint32_t gtt_phys_start;
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unsigned gtt_pages;
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unsigned gatt_pages;
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unsigned long stolen_size;
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unsigned long vram_stolen_size;
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struct rw_semaphore sem;
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};
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/* Exported functions */
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extern int psb_gtt_init(struct drm_device *dev, int resume);
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extern void psb_gtt_takedown(struct drm_device *dev);
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/* Each gtt_range describes an allocation in the GTT area */
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struct gtt_range {
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struct resource resource; /* Resource for our allocation */
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u32 offset; /* GTT offset of our object */
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struct drm_gem_object gem; /* GEM high level stuff */
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int in_gart; /* Currently in the GART (ref ct) */
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bool stolen; /* Backed from stolen RAM */
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bool mmapping; /* Is mmappable */
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struct page **pages; /* Backing pages if present */
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int npage; /* Number of backing pages */
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int roll; /* Roll applied to the GTT entries */
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};
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#define to_gtt_range(x) container_of(x, struct gtt_range, gem)
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extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
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const char *name, int backed,
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u32 align);
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extern void psb_gtt_kref_put(struct gtt_range *gt);
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extern void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt);
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extern int psb_gtt_pin(struct gtt_range *gt);
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extern void psb_gtt_unpin(struct gtt_range *gt);
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extern void psb_gtt_roll(struct drm_device *dev,
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struct gtt_range *gt, int roll);
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extern int psb_gtt_restore(struct drm_device *dev);
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#endif
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