2019-05-29 07:18:02 -07:00
/* SPDX-License-Identifier: GPL-2.0-only */
2014-01-04 19:35:20 +01:00
/**************************************************************************
* 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
