1/**************************************************************************
 2 * Copyright (c) 2007-2008, Intel Corporation.
 3 * All Rights Reserved.
 4 *
 5 * This program is free software; you can redistribute it and/or modify it
 6 * under the terms and conditions of the GNU General Public License,
 7 * version 2, as published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 **************************************************************************/
19
20#ifndef _PSB_GTT_H_
21#define _PSB_GTT_H_
22
23#include <drm/drmP.h>
24#include <drm/drm_gem.h>
25
 
 
26/* This wants cleaning up with respect to the psb_dev and un-needed stuff */
27struct psb_gtt {
28	uint32_t gatt_start;
29	uint32_t mmu_gatt_start;
30	uint32_t gtt_start;
31	uint32_t gtt_phys_start;
32	unsigned gtt_pages;
33	unsigned gatt_pages;
34	unsigned long stolen_size;
35	unsigned long vram_stolen_size;
36	struct rw_semaphore sem;
37};
38
39/* Exported functions */
40extern int psb_gtt_init(struct drm_device *dev, int resume);
41extern void psb_gtt_takedown(struct drm_device *dev);
42
43/* Each gtt_range describes an allocation in the GTT area */
44struct gtt_range {
45	struct resource resource;	/* Resource for our allocation */
46	u32 offset;			/* GTT offset of our object */
47	struct drm_gem_object gem;	/* GEM high level stuff */
48	int in_gart;			/* Currently in the GART (ref ct) */
49	bool stolen;			/* Backed from stolen RAM */
50	bool mmapping;			/* Is mmappable */
51	struct page **pages;		/* Backing pages if present */
52	int npage;			/* Number of backing pages */
53	int roll;			/* Roll applied to the GTT entries */
54};
55
56extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
57					     const char *name, int backed,
58					     u32 align);
59extern void psb_gtt_kref_put(struct gtt_range *gt);
60extern void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt);
61extern int psb_gtt_pin(struct gtt_range *gt);
62extern void psb_gtt_unpin(struct gtt_range *gt);
63extern void psb_gtt_roll(struct drm_device *dev,
64					struct gtt_range *gt, int roll);
65extern int psb_gtt_restore(struct drm_device *dev);
66#endif

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/**************************************************************************
 3 * Copyright (c) 2007-2008, Intel Corporation.
 4 * All Rights Reserved.
 5 *
 
 
 
 
 
 
 
 
 
 
 
 
 
 6 **************************************************************************/
 7
 8#ifndef _PSB_GTT_H_
 9#define _PSB_GTT_H_
10
 
11#include <drm/drm_gem.h>
12
13struct drm_psb_private;
14
15/* This wants cleaning up with respect to the psb_dev and un-needed stuff */
16struct psb_gtt {
17	uint32_t gatt_start;
18	uint32_t mmu_gatt_start;
19	uint32_t gtt_start;
20	uint32_t gtt_phys_start;
21	unsigned gtt_pages;
22	unsigned gatt_pages;
23	unsigned long stolen_size;
24	unsigned long vram_stolen_size;
 
25};
26
27/* Exported functions */
28int psb_gtt_init(struct drm_device *dev);
29void psb_gtt_fini(struct drm_device *dev);
30int psb_gtt_resume(struct drm_device *dev);
31
32int psb_gtt_allocate_resource(struct drm_psb_private *pdev, struct resource *res,
33			      const char *name, resource_size_t size, resource_size_t align,
34			      bool stolen, u32 *offset);
35
36uint32_t psb_gtt_mask_pte(uint32_t pfn, int type);
37void psb_gtt_insert_pages(struct drm_psb_private *pdev, const struct resource *res,
38			  struct page **pages);
39void psb_gtt_remove_pages(struct drm_psb_private *pdev, const struct resource *res);
 
 
 
40
 
 
 
 
 
 
 
 
 
 
41#endif