mirror of
https://codeberg.org/ziglang/zig.git
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Alex Rønne Petersen
66d97267c7
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
186 lines
5.6 KiB
C
Vendored
186 lines
5.6 KiB
C
Vendored
/* $OpenBSD: pmap.h,v 1.66 2024/06/18 12:37:29 jsg Exp $ */
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/* $NetBSD: pmap.h,v 1.1 1996/09/30 16:34:29 ws Exp $ */
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/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _POWERPC_PMAP_H_
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#define _POWERPC_PMAP_H_
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#include <machine/pte.h>
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/*
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* Segment registers
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*/
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#ifndef _LOCORE
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typedef u_int sr_t;
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#endif /* _LOCORE */
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#define SR_TYPE 0x80000000
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#define SR_SUKEY 0x40000000
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#define SR_PRKEY 0x20000000
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#define SR_NOEXEC 0x10000000
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#define SR_VSID 0x00ffffff
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/*
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* bit
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* 3 2 2 2 2 1 1 1 1 1 0
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* 1 8 7 4 0 9 6 5 2 1 0
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* |XXXX|XXXX XXXX|XXXX XXXX|XXXX XXXX XXXX
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*
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* bits 28 - 31 contain SR
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* bits 20 - 27 contain L1 for VtoP translation
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* bits 12 - 19 contain L2 for VtoP translation
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* bits 0 - 11 contain page offset
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*/
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#ifndef _LOCORE
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/* V->P mapping data */
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#define VP_SR_SIZE 16
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#define VP_SR_MASK (VP_SR_SIZE-1)
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#define VP_SR_POS 28
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#define VP_IDX1_SIZE 256
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#define VP_IDX1_MASK (VP_IDX1_SIZE-1)
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#define VP_IDX1_POS 20
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#define VP_IDX2_SIZE 256
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#define VP_IDX2_MASK (VP_IDX2_SIZE-1)
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#define VP_IDX2_POS 12
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/* cache flags */
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#define PMAP_CACHE_DEFAULT 0 /* WB cache managed mem, devices not */
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#define PMAP_CACHE_CI 1 /* cache inhibit */
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#define PMAP_CACHE_WT 2 /* writethru */
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#define PMAP_CACHE_WB 3 /* writeback */
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#ifdef _KERNEL
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/*
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* Pmap stuff
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*/
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struct pmap {
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sr_t pm_sr[16]; /* segments used in this pmap */
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struct pmapvp *pm_vp[VP_SR_SIZE]; /* virtual to physical table */
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u_int32_t pm_exec[16]; /* segments used in this pmap */
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int pm_refs; /* ref count */
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struct pmap_statistics pm_stats; /* pmap statistics */
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struct mutex pm_mtx; /* protect VP table */
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};
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/*
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* Segment handling stuff
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*/
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#define PPC_SEGMENT_LENGTH 0x10000000
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#define PPC_SEGMENT_MASK 0xf0000000
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/*
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* Some system constants
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*/
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#ifndef NPMAPS
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#define NPMAPS 32768 /* Number of pmaps in system */
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#endif
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typedef struct pmap *pmap_t;
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extern struct pmap kernel_pmap_;
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#define pmap_kernel() (&kernel_pmap_)
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#define pmap_clear_modify(pg) pmap_clear_attrs((pg), PG_PMAP_MOD)
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#define pmap_clear_reference(pg) pmap_clear_attrs((pg), PG_PMAP_REF)
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#define pmap_is_modified(pg) pmap_test_attrs((pg), PG_PMAP_MOD)
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#define pmap_is_referenced(pg) pmap_test_attrs((pg), PG_PMAP_REF)
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#define pmap_unwire(pm, va)
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#define pmap_update(pmap) /* nothing (yet) */
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#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
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/*
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* Alternate mapping methods for pool.
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* Really simple. 0x0->0x80000000 contain 1->1 mappings of the physical
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* memory. - XXX
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*/
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#define pmap_map_direct(pg) ((vaddr_t)VM_PAGE_TO_PHYS(pg))
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#define pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)va)
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#define __HAVE_PMAP_DIRECT
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void pmap_bootstrap(u_int kernelstart, u_int kernelend);
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void pmap_enable_mmu();
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int pmap_clear_attrs(struct vm_page *, unsigned int);
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int pmap_test_attrs(struct vm_page *, unsigned int);
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void pmap_release(struct pmap *);
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#ifdef ALTIVEC
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int pmap_copyinsn(pmap_t, vaddr_t, uint32_t *);
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#endif
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void pmap_real_memory(vaddr_t *start, vsize_t *size);
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int pte_spill_v(struct pmap *pm, u_int32_t va, u_int32_t dsisr, int exec_fault);
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int reserve_dumppages(caddr_t p);
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#define pmap_init_percpu() do { /* nothing */ } while (0)
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#define pmap_unuse_final(p) /* nothing */
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#define pmap_remove_holes(vm) do { /* nothing */ } while (0)
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#define PMAP_CHECK_COPYIN (ppc_proc_is_64b == 0)
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#define PMAP_STEAL_MEMORY
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#define PG_PMAP_MOD PG_PMAP0
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#define PG_PMAP_REF PG_PMAP1
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#define PG_PMAP_EXE PG_PMAP2
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#define PG_PMAP_UC PG_PMAP3
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/*
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* MD flags that we use for pmap_enter (in the pa):
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*/
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#define PMAP_PA_MASK ~((paddr_t)PAGE_MASK) /* to remove the flags */
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#define PMAP_NOCACHE 0x1 /* map uncached */
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#define PMAP_WT 0x2 /* map write-through */
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#endif /* _KERNEL */
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struct vm_page_md {
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struct mutex pv_mtx;
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LIST_HEAD(,pte_desc) pv_list;
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};
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#define VM_MDPAGE_INIT(pg) do { \
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mtx_init(&(pg)->mdpage.pv_mtx, IPL_VM); \
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LIST_INIT(&((pg)->mdpage.pv_list)); \
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} while (0)
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#endif /* _LOCORE */
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#endif /* _POWERPC_PMAP_H_ */ |