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/* $OpenBSD: pmap.h,v 1.38 2004/08/06 22:39:13 deraadt Exp $ */
/* $NetBSD: pmap.h,v 1.1 1996/09/30 16:34:29 ws Exp $ */
/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _POWERPC_PMAP_H_
#define _POWERPC_PMAP_H_
#include <machine/pte.h>
/*
* Segment registers
*/
#ifndef _LOCORE
typedef u_int sr_t;
#endif /* _LOCORE */
#define SR_TYPE 0x80000000
#define SR_SUKEY 0x40000000
#define SR_PRKEY 0x20000000
#define SR_NOEXEC 0x10000000
#define SR_VSID 0x00ffffff
/*
* bit
* 3 2 2 2 2 1 1 1 1 1 0
* 1 8 7 4 0 9 6 5 2 1 0
* |XXXX|XXXX XXXX|XXXX XXXX|XXXX XXXX XXXX
*
* bits 28 - 31 contain SR
* bits 20 - 27 contain L1 for VtoP translation
* bits 12 - 19 contain L2 for VtoP translation
* bits 0 - 11 contain page offset
*/
#ifndef _LOCORE
/* V->P mapping data */
#define VP_SR_SIZE 16
#define VP_SR_MASK (VP_SR_SIZE-1)
#define VP_SR_POS 28
#define VP_IDX1_SIZE 256
#define VP_IDX1_MASK (VP_IDX1_SIZE-1)
#define VP_IDX1_POS 20
#define VP_IDX2_SIZE 256
#define VP_IDX2_MASK (VP_IDX2_SIZE-1)
#define VP_IDX2_POS 12
/* functions used by the bus layer for device accesses */
void pmap_kenter_cache(vaddr_t va, paddr_t pa, vm_prot_t prot, int cacheable);
void pmap_kremove_pg(vaddr_t va);
/* cache flags */
#define PMAP_CACHE_DEFAULT 0 /* WB cache managed mem, devices not */
#define PMAP_CACHE_CI 1 /* cache inhibit */
#define PMAP_CACHE_WT 2 /* writethru */
#define PMAP_CACHE_WB 3 /* writeback */
/*
* Pmap stuff
*/
struct pmap {
sr_t pm_sr[16]; /* segments used in this pmap */
struct pmapvp *pm_vp[VP_SR_SIZE]; /* virtual to physical table */
u_int32_t pm_exec[16]; /* segments used in this pmap */
int pm_refs; /* ref count */
struct pmap_statistics pm_stats; /* pmap statistics */
};
typedef struct pmap *pmap_t;
#ifdef _KERNEL
extern struct pmap kernel_pmap_;
#define pmap_kernel() (&kernel_pmap_)
boolean_t pteclrbits(paddr_t pa, u_int mask, u_int clear);
#define pmap_clear_modify(page) \
(pteclrbits(VM_PAGE_TO_PHYS(page), PTE_CHG, TRUE))
#define pmap_clear_reference(page) \
(pteclrbits(VM_PAGE_TO_PHYS(page), PTE_REF, TRUE))
#define pmap_is_modified(page) \
(pteclrbits(VM_PAGE_TO_PHYS(page), PTE_CHG, FALSE))
#define pmap_is_referenced(page) \
(pteclrbits(VM_PAGE_TO_PHYS(page), PTE_REF, FALSE))
#define pmap_unwire(pm, va)
#define pmap_phys_address(x) (x)
#define pmap_update(pmap) /* nothing (yet) */
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
/*
* Alternate mapping methods for pool.
* Really simple. 0x0->0x80000000 contain 1->1 mappings of the physical
* memory. - XXX
*/
#define pmap_map_direct(pg) ((vaddr_t)VM_PAGE_TO_PHYS(pg))
#define pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)va)
#define __HAVE_PMAP_DIRECT
void pmap_bootstrap(u_int kernelstart, u_int kernelend);
void pmap_pinit(struct pmap *);
void pmap_release(struct pmap *);
void pmap_real_memory(vm_offset_t *start, vm_size_t *size);
void switchexit(struct proc *);
int pte_spill_v(struct pmap *pm, u_int32_t va, u_int32_t dsisr, int exec_fault);
#define pmap_copy(dst_pmap, src_pmap, dst_addr, len, src_addr) ;
void pmap_proc_iflush(struct proc *proc, vaddr_t va, vsize_t len);
#define pmap_unuse_final(p) /* nothing */
#endif /* _KERNEL */
#endif /* _LOCORE */
#endif /* _POWERPC_PMAP_H_ */
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