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ebc7d6470a
GTT roll support was used to accelerate fb panning on some machines. Unfortunately this never worked properly with multiple monitors and caused issues on others where the framebuffer wouldn't fit in stolen memory. Let's remove it! Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20201028143608.1284-1-patrik.r.jakobsson@gmail.com
52 lines
1.7 KiB
C
52 lines
1.7 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/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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};
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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 int psb_gtt_restore(struct drm_device *dev);
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#endif
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