1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /**************************************************************************
3 * Copyright (c) 2007-2011, Intel Corporation.
6 **************************************************************************/
11 struct psb_mmu_driver {
12 /* protects driver- and pd structures. Always take in read mode
13 * before taking the page table spinlock.
15 struct rw_semaphore sem;
17 /* protects page tables, directory tables and pt tables.
22 atomic_t needs_tlbflush;
23 atomic_t *msvdx_mmu_invaldc;
24 struct psb_mmu_pd *default_pd;
28 unsigned long clflush_mask;
30 struct drm_device *dev;
36 struct psb_mmu_pd *pd;
44 struct psb_mmu_driver *driver;
46 struct psb_mmu_pt **tables;
48 struct page *dummy_pt;
49 struct page *dummy_page;
55 extern struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev,
58 atomic_t *msvdx_mmu_invaldc);
59 extern void psb_mmu_driver_takedown(struct psb_mmu_driver *driver);
60 extern struct psb_mmu_pd *psb_mmu_get_default_pd(struct psb_mmu_driver
62 extern struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver,
65 extern void psb_mmu_free_pagedir(struct psb_mmu_pd *pd);
66 extern void psb_mmu_flush(struct psb_mmu_driver *driver);
67 extern void psb_mmu_remove_pfn_sequence(struct psb_mmu_pd *pd,
68 unsigned long address,
70 extern int psb_mmu_insert_pfn_sequence(struct psb_mmu_pd *pd,
72 unsigned long address,
73 uint32_t num_pages, int type);
74 extern int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,
76 extern void psb_mmu_set_pd_context(struct psb_mmu_pd *pd, int hw_context);
77 extern int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages,
78 unsigned long address, uint32_t num_pages,
79 uint32_t desired_tile_stride,
80 uint32_t hw_tile_stride, int type);
81 extern void psb_mmu_remove_pages(struct psb_mmu_pd *pd,
82 unsigned long address, uint32_t num_pages,
83 uint32_t desired_tile_stride,
84 uint32_t hw_tile_stride);