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linux/drivers/gpu/drm/gma500/gtt.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 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>
2019-05-30 07:57:49 +08:00
/* SPDX-License-Identifier: GPL-2.0-only */
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
/**************************************************************************
* Copyright (c) 2007-2008, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#ifndef _PSB_GTT_H_
#define _PSB_GTT_H_
drm: Extract <drm/drm_gem.h> v2: Don't forget git add, noticed by David. Cc: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Acked-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-09-23 21:46:53 +08:00
#include <drm/drm_gem.h>
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
/* 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 */
gma500: gtt based hardware scrolling console Add support for GTT based scrolling. Instead of pushing bits around we simply use the GTT to change the mappings. This provides us with a very fast way to scroll the display providing we have enough memory to allocate on 4K line boundaries. In practice this seems to be the case except for very big displays such as HDMI, and the usual configurations are netbooks/tablets. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-30 06:27:22 +08:00
int roll; /* Roll applied to the GTT entries */
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
};
drm/gma500: Move GEM BO to drm_framebuffer Since drm_framebuffer can now store GEM objects directly, place them there rather than in our own subclass. As this makes the framebuffer create_handle and destroy functions the same as the GEM framebuffer helper, we can reuse those. Signed-off-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-20-daniels@collabora.com
2018-03-30 22:11:34 +08:00
#define to_gtt_range(x) container_of(x, struct gtt_range, gem)
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
drm/gma500: Add backing type and base align to psb_gem_create() We'll need this for our gem create ioctl in a later patch. Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
2014-01-06 09:39:10 +08:00
const char *name, int backed,
u32 align);
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
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);
gma500: gtt based hardware scrolling console Add support for GTT based scrolling. Instead of pushing bits around we simply use the GTT to change the mappings. This provides us with a very fast way to scroll the display providing we have enough memory to allocate on 4K line boundaries. In practice this seems to be the case except for very big displays such as HDMI, and the usual configurations are netbooks/tablets. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-30 06:27:22 +08:00
extern void psb_gtt_roll(struct drm_device *dev,
struct gtt_range *gt, int roll);
drm/gma500: Add support for rebuilding the gtt Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
2013-04-06 05:56:18 +08:00
extern int psb_gtt_restore(struct drm_device *dev);
gma500: introduce the GTT and MMU handling logic This fits alongside the GEM support to manage our resources on the card itself. It's not actually clear we need to configure the MMU at all. Further research is needed before removing it entirely. For now we suck it in (slightly abused) from the old semi-free driver. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04 02:21:09 +08:00
#endif
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