| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /************************************************************************** |
| * Copyright (c) 2007-2011, Intel Corporation. |
| * All Rights Reserved. |
| * |
| **************************************************************************/ |
| |
| #ifndef __MMU_H |
| #define __MMU_H |
| |
| struct psb_mmu_driver { |
| /* protects driver- and pd structures. Always take in read mode |
| * before taking the page table spinlock. |
| */ |
| struct rw_semaphore sem; |
| |
| /* protects page tables, directory tables and pt tables. |
| * and pt structures. |
| */ |
| spinlock_t lock; |
| |
| atomic_t needs_tlbflush; |
| atomic_t *msvdx_mmu_invaldc; |
| struct psb_mmu_pd *default_pd; |
| uint32_t bif_ctrl; |
| int has_clflush; |
| int clflush_add; |
| unsigned long clflush_mask; |
| |
| struct drm_device *dev; |
| }; |
| |
| struct psb_mmu_pd; |
| |
| struct psb_mmu_pt { |
| struct psb_mmu_pd *pd; |
| uint32_t index; |
| uint32_t count; |
| struct page *p; |
| uint32_t *v; |
| }; |
| |
| struct psb_mmu_pd { |
| struct psb_mmu_driver *driver; |
| int hw_context; |
| struct psb_mmu_pt **tables; |
| struct page *p; |
| struct page *dummy_pt; |
| struct page *dummy_page; |
| uint32_t pd_mask; |
| uint32_t invalid_pde; |
| uint32_t invalid_pte; |
| }; |
| |
| extern struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev, |
| int trap_pagefaults, |
| int invalid_type, |
| atomic_t *msvdx_mmu_invaldc); |
| extern void psb_mmu_driver_takedown(struct psb_mmu_driver *driver); |
| extern struct psb_mmu_pd *psb_mmu_get_default_pd(struct psb_mmu_driver |
| *driver); |
| extern struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver, |
| int trap_pagefaults, |
| int invalid_type); |
| extern void psb_mmu_free_pagedir(struct psb_mmu_pd *pd); |
| extern void psb_mmu_flush(struct psb_mmu_driver *driver); |
| extern void psb_mmu_remove_pfn_sequence(struct psb_mmu_pd *pd, |
| unsigned long address, |
| uint32_t num_pages); |
| extern int psb_mmu_insert_pfn_sequence(struct psb_mmu_pd *pd, |
| uint32_t start_pfn, |
| unsigned long address, |
| uint32_t num_pages, int type); |
| extern int psb_mmu_virtual_to_pfn(struct psb_mmu_pd *pd, uint32_t virtual, |
| unsigned long *pfn); |
| extern void psb_mmu_set_pd_context(struct psb_mmu_pd *pd, int hw_context); |
| extern int psb_mmu_insert_pages(struct psb_mmu_pd *pd, struct page **pages, |
| unsigned long address, uint32_t num_pages, |
| uint32_t desired_tile_stride, |
| uint32_t hw_tile_stride, int type); |
| extern void psb_mmu_remove_pages(struct psb_mmu_pd *pd, |
| unsigned long address, uint32_t num_pages, |
| uint32_t desired_tile_stride, |
| uint32_t hw_tile_stride); |
| |
| #endif |
