| Patrik Jakobsson | ac1b01b | 2014-01-04 19:35:20 +0100 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * Copyright (c) 2007-2011, 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 | |
| 15 | #ifndef __MMU_H |
| 16 | #define __MMU_H |
| 17 | |
| 18 | struct psb_mmu_driver { |
| 19 | /* protects driver- and pd structures. Always take in read mode |
| 20 | * before taking the page table spinlock. |
| 21 | */ |
| 22 | struct rw_semaphore sem; |
| 23 | |
| 24 | /* protects page tables, directory tables and pt tables. |
| 25 | * and pt structures. |
| 26 | */ |
| 27 | spinlock_t lock; |
| 28 | |
| 29 | atomic_t needs_tlbflush; |
| 30 | atomic_t *msvdx_mmu_invaldc; |
| 31 | struct psb_mmu_pd *default_pd; |
| 32 | uint32_t bif_ctrl; |
| 33 | int has_clflush; |
| 34 | int clflush_add; |
| 35 | unsigned long clflush_mask; |
| 36 | |
| 37 | struct drm_device *dev; |
| 38 | }; |
| 39 | |
| 40 | struct psb_mmu_pd; |
| 41 | |
| 42 | struct psb_mmu_pt { |
| 43 | struct psb_mmu_pd *pd; |
| 44 | uint32_t index; |
| 45 | uint32_t count; |
| 46 | struct page *p; |
| 47 | uint32_t *v; |
| 48 | }; |
| 49 | |
| 50 | struct psb_mmu_pd { |
| 51 | struct psb_mmu_driver *driver; |
| 52 | int hw_context; |
| 53 | struct psb_mmu_pt **tables; |
| 54 | struct page *p; |
| 55 | struct page *dummy_pt; |
| 56 | struct page *dummy_page; |
| 57 | uint32_t pd_mask; |
| 58 | uint32_t invalid_pde; |
| 59 | uint32_t invalid_pte; |
| 60 | }; |
| 61 | |
| 62 | extern struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev, |
| 63 | int trap_pagefaults, |
| 64 | int invalid_type, |
| 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 |
| 68 | *driver); |
| 69 | extern struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver, |
| 70 | int trap_pagefaults, |
| 71 | int invalid_type); |
| 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, |
| 76 | uint32_t num_pages); |
| 77 | extern int psb_mmu_insert_pfn_sequence(struct psb_mmu_pd *pd, |
| 78 | uint32_t start_pfn, |
| 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, |
| 82 | unsigned long *pfn); |
| 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); |
| 92 | |
| 93 | #endif |