Annotation of sys/arch/powerpc/include/pmap.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pmap.h,v 1.44 2007/05/27 15:46:02 drahn Exp $ */
! 2: /* $NetBSD: pmap.h,v 1.1 1996/09/30 16:34:29 ws Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (C) 1995, 1996 Wolfgang Solfrank.
! 6: * Copyright (C) 1995, 1996 TooLs GmbH.
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed by TooLs GmbH.
! 20: * 4. The name of TooLs GmbH may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 27: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 28: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 29: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 30: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 31: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 32: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: #ifndef _POWERPC_PMAP_H_
! 36: #define _POWERPC_PMAP_H_
! 37:
! 38: #include <machine/pte.h>
! 39:
! 40: /*
! 41: * Segment registers
! 42: */
! 43: #ifndef _LOCORE
! 44: typedef u_int sr_t;
! 45: #endif /* _LOCORE */
! 46: #define SR_TYPE 0x80000000
! 47: #define SR_SUKEY 0x40000000
! 48: #define SR_PRKEY 0x20000000
! 49: #define SR_NOEXEC 0x10000000
! 50: #define SR_VSID 0x00ffffff
! 51: /*
! 52: * bit
! 53: * 3 2 2 2 2 1 1 1 1 1 0
! 54: * 1 8 7 4 0 9 6 5 2 1 0
! 55: * |XXXX|XXXX XXXX|XXXX XXXX|XXXX XXXX XXXX
! 56: *
! 57: * bits 28 - 31 contain SR
! 58: * bits 20 - 27 contain L1 for VtoP translation
! 59: * bits 12 - 19 contain L2 for VtoP translation
! 60: * bits 0 - 11 contain page offset
! 61: */
! 62: #ifndef _LOCORE
! 63: /* V->P mapping data */
! 64: #define VP_SR_SIZE 16
! 65: #define VP_SR_MASK (VP_SR_SIZE-1)
! 66: #define VP_SR_POS 28
! 67: #define VP_IDX1_SIZE 256
! 68: #define VP_IDX1_MASK (VP_IDX1_SIZE-1)
! 69: #define VP_IDX1_POS 20
! 70: #define VP_IDX2_SIZE 256
! 71: #define VP_IDX2_MASK (VP_IDX2_SIZE-1)
! 72: #define VP_IDX2_POS 12
! 73:
! 74: /* functions used by the bus layer for device accesses */
! 75: void pmap_kenter_cache(vaddr_t va, paddr_t pa, vm_prot_t prot, int cacheable);
! 76: void pmap_kremove_pg(vaddr_t va);
! 77:
! 78: /* cache flags */
! 79: #define PMAP_CACHE_DEFAULT 0 /* WB cache managed mem, devices not */
! 80: #define PMAP_CACHE_CI 1 /* cache inhibit */
! 81: #define PMAP_CACHE_WT 2 /* writethru */
! 82: #define PMAP_CACHE_WB 3 /* writeback */
! 83:
! 84: #ifdef _KERNEL
! 85:
! 86: /*
! 87: * Pmap stuff
! 88: */
! 89: struct pmap {
! 90: sr_t pm_sr[16]; /* segments used in this pmap */
! 91: struct pmapvp *pm_vp[VP_SR_SIZE]; /* virtual to physical table */
! 92: u_int32_t pm_exec[16]; /* segments used in this pmap */
! 93: int pm_refs; /* ref count */
! 94: struct pmap_statistics pm_stats; /* pmap statistics */
! 95: };
! 96:
! 97: typedef struct pmap *pmap_t;
! 98:
! 99: extern struct pmap kernel_pmap_;
! 100: #define pmap_kernel() (&kernel_pmap_)
! 101: boolean_t pteclrbits(struct vm_page *pg, u_int mask, u_int clear);
! 102:
! 103:
! 104: #define pmap_clear_modify(page) \
! 105: (pteclrbits((page), PG_PMAP_MOD, TRUE))
! 106: #define pmap_clear_reference(page) \
! 107: (pteclrbits((page), PG_PMAP_REF, TRUE))
! 108: #define pmap_is_modified(page) \
! 109: (pteclrbits((page), PG_PMAP_MOD, FALSE))
! 110: #define pmap_is_referenced(page) \
! 111: (pteclrbits((page), PG_PMAP_REF, FALSE))
! 112:
! 113: #define pmap_unwire(pm, va)
! 114: #define pmap_phys_address(x) (x)
! 115: #define pmap_update(pmap) /* nothing (yet) */
! 116:
! 117: #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
! 118:
! 119: /*
! 120: * Alternate mapping methods for pool.
! 121: * Really simple. 0x0->0x80000000 contain 1->1 mappings of the physical
! 122: * memory. - XXX
! 123: */
! 124: #define pmap_map_direct(pg) ((vaddr_t)VM_PAGE_TO_PHYS(pg))
! 125: #define pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)va)
! 126: #define __HAVE_PMAP_DIRECT
! 127:
! 128: void pmap_bootstrap(u_int kernelstart, u_int kernelend);
! 129:
! 130: void pmap_pinit(struct pmap *);
! 131: void pmap_release(struct pmap *);
! 132:
! 133: void pmap_real_memory(vaddr_t *start, vsize_t *size);
! 134: void switchexit(struct proc *);
! 135:
! 136: int pte_spill_v(struct pmap *pm, u_int32_t va, u_int32_t dsisr, int exec_fault);
! 137: #define pmap_copy(dst_pmap, src_pmap, dst_addr, len, src_addr) ;
! 138: int reserve_dumppages(caddr_t p);
! 139:
! 140: void pmap_proc_iflush(struct proc *proc, vaddr_t va, vsize_t len);
! 141: #define pmap_unuse_final(p) /* nothing */
! 142:
! 143: #define PMAP_STEAL_MEMORY
! 144:
! 145: #define PG_PMAP_MOD PG_PMAP0
! 146: #define PG_PMAP_REF PG_PMAP1
! 147: #define PG_PMAP_EXE PG_PMAP2
! 148:
! 149: #endif /* _KERNEL */
! 150: #endif /* _LOCORE */
! 151: #endif /* _POWERPC_PMAP_H_ */
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