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pmap.h revision 1.1.2.2 
      1 /*	$NetBSD: pmap.h,v 1.1.2.2 2011/10/14 17:21:26 matt Exp $	*/
      2 /*-
      3  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
      8  * Agency and which was developed by Matt Thomas of 3am Software Foundry.
      9  *
     10  * This material is based upon work supported by the Defense Advanced Research
     11  * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
     12  * Contract No. N66001-09-C-2073.
     13  * Approved for Public Release, Distribution Unlimited
     14  *
     15  * Redistribution and use in source and binary forms, with or without
     16  * modification, are permitted provided that the following conditions
     17  * are met:
     18  * 1. Redistributions of source code must retain the above copyright
     19  *    notice, this list of conditions and the following disclaimer.
     20  * 2. Redistributions in binary form must reproduce the above copyright
     21  *    notice, this list of conditions and the following disclaimer in the
     22  *    documentation and/or other materials provided with the distribution.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     27  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     34  * POSSIBILITY OF SUCH DAMAGE.
     35  */
     36 #ifndef _POWERPC_BOOKE_PMAP_H_
     37 #define _POWERPC_BOOKE_PMAP_H_
     38 
     39 #ifdef _LOCORE
     40 #error use assym.h instead
     41 #endif
     42 
     43 #if defined(_MODULE)
     44 #error this file should not be included by loadable kernel modules
     45 #endif
     46 
     47 #include <sys/cpu.h>
     48 #include <sys/kcore.h>
     49 #include <uvm/uvm_page.h>
     50 #ifdef __PMAP_PRIVATE
     51 #include <powerpc/booke/cpuvar.h>
     52 #include <powerpc/cpuset.h>
     53 #endif
     54 
     55 #define	PMAP_NEED_PROCWR
     56 
     57 #define	PMAP_NOCACHE	0x01000000	/*  */
     58 #include <common/pmap/tlb/vmpagemd.h>
     59 
     60 #include <powerpc/booke/pte.h>
     61 
     62 #define	NBSEG		(NBPG*NPTEPG)
     63 #define	SEGSHIFT	(PGSHIFT + PGSHIFT - 2)
     64 #define SEGOFSET	((1 << SEGSHIFT) - 1)
     65 #define PMAP_SEGTABSIZE	(1 << (32 - SEGSHIFT))
     66 #define	NPTEPG		(NBPG >> 2)
     67 
     68 #define	KERNEL_PID	0
     69 
     70 #define	PMAP_TLB_NUM_PIDS		256
     71 #define	PMAP_INVALID_SEGTAB_ADDRESS	((struct pmap_segtab *)0xfeeddead)
     72 
     73 #define	pmap_phys_address(x)		(x)
     74 
     75 void	pmap_procwr(struct proc *, vaddr_t, size_t);
     76 #define	PMAP_NEED_PROCWR
     77 
     78 #ifdef __PMAP_PRIVATE
     79 struct vm_page *
     80 	pmap_md_alloc_poolpage(int flags);
     81 vaddr_t	pmap_md_map_poolpage(paddr_t);
     82 bool	pmap_md_direct_mapped_vaddr_p(vaddr_t);
     83 bool	pmap_md_io_vaddr_p(vaddr_t);
     84 paddr_t	pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t);
     85 vaddr_t	pmap_md_direct_map_paddr(paddr_t);
     86 void	pmap_md_init(void);
     87 
     88 bool	pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t);
     89 #endif
     90 
     91 void	pmap_md_page_syncicache(struct vm_page *, __cpuset_t);
     92 void	pmap_bootstrap(vaddr_t, vaddr_t, const phys_ram_seg_t *, size_t);
     93 bool	pmap_extract(struct pmap *, vaddr_t, paddr_t *);
     94 
     95 #ifdef __PMAP_PRIVATE
     96 /*
     97  * Virtual Cache Alias helper routines.  Not a problem for Booke CPUs.
     98  */
     99 static inline bool
    100 pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep)
    101 {
    102 	return false;
    103 }
    104 
    105 static inline void
    106 pmap_md_vca_remove(struct vm_page *pg, vaddr_t va)
    107 {
    108 
    109 }
    110 
    111 static inline void
    112 pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op)
    113 {
    114 }
    115 
    116 static inline size_t
    117 pmap_md_tlb_asid_max(void)
    118 {
    119 	return PMAP_TLB_NUM_PIDS - 1;
    120 }
    121 #endif
    122 
    123 #define	POOL_VTOPHYS(va)	((paddr_t)(vaddr_t)(va))
    124 #define	POOL_PHYSTOV(pa)	((vaddr_t)(paddr_t)(pa))
    125 
    126 #include <common/pmap/tlb/pmap.h>
    127 
    128 #define	pmap_kernel()	(&kernel_pmap_store.kernel_pmap)
    129 static inline paddr_t vtophys(vaddr_t);
    130 
    131 static inline paddr_t
    132 vtophys(vaddr_t va)
    133 {
    134 	paddr_t pa;
    135 
    136 	if (pmap_extract(pmap_kernel(), va, &pa))
    137 		return pa;
    138 	KASSERT(0);
    139 	return (paddr_t) -1;
    140 }
    141 
    142 #endif /* !_POWERPC_BOOKE_PMAP_H_ */
    143