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- /**************************************************************************
- * Copyright (c) 2007-2011, Intel Corporation.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- **************************************************************************/
- #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
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