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pmap.h revision 1.8 
      1 /*	$NetBSD: pmap.h,v 1.8 2011/06/30 00:52:59 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 #include <common/pmap/tlb/vmpagemd.h>
     58 
     59 #include <powerpc/booke/pte.h>
     60 
     61 #define	NBSEG		(NBPG*NPTEPG)
     62 #define	SEGSHIFT	(PGSHIFT + PGSHIFT - 2)
     63 #define SEGOFSET	((1 << SEGSHIFT) - 1)
     64 #define PMAP_SEGTABSIZE	(1 << (32 - SEGSHIFT))
     65 #define	NPTEPG		(NBPG >> 2)
     66 
     67 #define	KERNEL_PID	0
     68 
     69 #define	PMAP_TLB_NUM_PIDS		256
     70 #define	PMAP_INVALID_SEGTAB_ADDRESS	((struct pmap_segtab *)0xfeeddead)
     71 
     72 #define	pmap_phys_address(x)		(x)
     73 
     74 void	pmap_procwr(struct proc *, vaddr_t, size_t);
     75 #define	PMAP_NEED_PROCWR
     76 
     77 #ifdef __PMAP_PRIVATE
     78 struct vm_page *
     79 	pmap_md_alloc_poolpage(int flags);
     80 vaddr_t	pmap_md_map_poolpage(paddr_t);
     81 bool	pmap_md_direct_mapped_vaddr_p(vaddr_t);
     82 bool	pmap_md_io_vaddr_p(vaddr_t);
     83 paddr_t	pmap_md_direct_mapped_vaddr_to_paddr(vaddr_t);
     84 vaddr_t	pmap_md_direct_map_paddr(paddr_t);
     85 void	pmap_md_init(void);
     86 
     87 bool	pmap_md_tlb_check_entry(void *, vaddr_t, tlb_asid_t, pt_entry_t);
     88 #endif
     89 
     90 void	pmap_md_page_syncicache(struct vm_page *, __cpuset_t);
     91 void	pmap_bootstrap(vaddr_t, vaddr_t, const phys_ram_seg_t *, size_t);
     92 bool	pmap_extract(struct pmap *, vaddr_t, paddr_t *);
     93 
     94 static inline paddr_t vtophys(vaddr_t);
     95 
     96 static inline paddr_t
     97 vtophys(vaddr_t va)
     98 {
     99 	paddr_t pa;
    100 
    101 	if (pmap_extract(pmap_kernel(), va, &pa))
    102 		return pa;
    103 	KASSERT(0);
    104 	return (paddr_t) -1;
    105 }
    106 
    107 #ifdef __PMAP_PRIVATE
    108 /*
    109  * Virtual Cache Alias helper routines.  Not a problem for Booke CPUs.
    110  */
    111 static inline bool
    112 pmap_md_vca_add(struct vm_page *pg, vaddr_t va, pt_entry_t *nptep)
    113 {
    114 	return false;
    115 }
    116 
    117 static inline void
    118 pmap_md_vca_remove(struct vm_page *pg, vaddr_t va)
    119 {
    120 
    121 }
    122 
    123 static inline void
    124 pmap_md_vca_clean(struct vm_page *pg, vaddr_t va, int op)
    125 {
    126 }
    127 
    128 static inline size_t
    129 pmap_md_tlb_asid_max(void)
    130 {
    131 	return PMAP_TLB_NUM_PIDS - 1;
    132 }
    133 #endif
    134 
    135 #define	POOL_VTOPHYS(va)	((paddr_t)(vaddr_t)(va))
    136 #define	POOL_PHYSTOV(pa)	((vaddr_t)(paddr_t)(pa))
    137 
    138 #include <common/pmap/tlb/pmap.h>
    139 
    140 #endif /* !_POWERPC_BOOKE_PMAP_H_ */
    141