1 /**************************************************************************
2 * Copyright (c) 2007-2011, Intel Corporation.
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.
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
13 **************************************************************************/
18 struct psb_mmu_driver {
19 /* protects driver- and pd structures. Always take in read mode
20 * before taking the page table spinlock.
22 struct rw_semaphore sem;
24 /* protects page tables, directory tables and pt tables.
29 atomic_t needs_tlbflush;
30 atomic_t *msvdx_mmu_invaldc;
31 struct psb_mmu_pd *default_pd;
35 unsigned long clflush_mask;
37 struct drm_device *dev;
43 struct psb_mmu_pd *pd;
51 struct psb_mmu_driver *driver;
53 struct psb_mmu_pt **tables;
55 struct page *dummy_pt;
56 struct page *dummy_page;
62 extern struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev,
65 atomic_t *msvdx_mmu_invaldc);
66 extern void psb_mmu_driver_takedown(struct psb_mmu_driver *driver);
67 extern struct psb_mmu_pd *psb_mmu_get_default_pd(struct psb_mmu_driver
69 extern struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver,
72 extern void psb_mmu_free_pagedir(struct psb_mmu_pd *pd);
73 extern void psb_mmu_flush(struct psb_mmu_driver *driver);
74 extern void psb_mmu_remove_pfn_sequence(struct psb_mmu_pd *pd,
75 unsigned long address,
77 extern int psb_mmu_insert_pfn_sequence(struct psb_mmu_pd *pd,
79 unsigned long address,
80 uint32_t num_pages, int type);
81 extern int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual,
83 extern void psb_mmu_set_pd_context(struct psb_mmu_pd *pd, int hw_context);
84 extern int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages,
85 unsigned long address, uint32_t num_pages,
86 uint32_t desired_tile_stride,
87 uint32_t hw_tile_stride, int type);
88 extern void psb_mmu_remove_pages(struct psb_mmu_pd *pd,
89 unsigned long address, uint32_t num_pages,
90 uint32_t desired_tile_stride,
91 uint32_t hw_tile_stride);