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1311e997d4
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
143 lines
No EOL
4 KiB
C
Vendored
143 lines
No EOL
4 KiB
C
Vendored
/* $OpenBSD: pmap.h,v 1.29 2025/05/21 09:42:59 kettenis Exp $ */
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/*
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* Copyright (c) 2008,2009,2014 Dale Rahn <drahn@dalerahn.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _ARM64_PMAP_H_
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#define _ARM64_PMAP_H_
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#ifndef _LOCORE
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#include <sys/mutex.h>
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#include <sys/queue.h>
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#include <machine/pte.h>
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#endif
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/* V->P mapping data */
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#define VP_IDX0_CNT 512
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#define VP_IDX0_MASK (VP_IDX0_CNT-1)
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#define VP_IDX0_POS 39
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#define VP_IDX1_CNT 512
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#define VP_IDX1_MASK (VP_IDX1_CNT-1)
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#define VP_IDX1_POS 30
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#define VP_IDX2_CNT 512
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#define VP_IDX2_MASK (VP_IDX2_CNT-1)
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#define VP_IDX2_POS 21
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#define VP_IDX3_CNT 512
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#define VP_IDX3_MASK (VP_IDX3_CNT-1)
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#define VP_IDX3_POS 12
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/* cache flags */
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#define PMAP_CACHE_CI (PMAP_MD0) /* cache inhibit */
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#define PMAP_CACHE_WT (PMAP_MD1) /* writethru */
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#define PMAP_CACHE_WB (PMAP_MD1|PMAP_MD0) /* writeback */
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#define PMAP_CACHE_DEV_NGNRNE (PMAP_MD2) /* device nGnRnE */
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#define PMAP_CACHE_DEV_NGNRE (PMAP_MD2|PMAP_MD0) /* device nGnRE */
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#define PMAP_CACHE_BITS (PMAP_MD0|PMAP_MD1|PMAP_MD2)
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#define PTED_VA_MANAGED_M (PMAP_MD3)
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#define PTED_VA_WIRED_M (PMAP_MD3 << 1)
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#if defined(_KERNEL) && !defined(_LOCORE)
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/*
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* Pmap stuff
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*/
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typedef struct pmap *pmap_t;
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struct pmap {
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struct mutex pm_mtx;
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union {
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struct pmapvp0 *l0; /* virtual to physical table 4 lvl */
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struct pmapvp1 *l1; /* virtual to physical table 3 lvl */
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} pm_vp;
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uint64_t pm_pt0pa;
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uint64_t pm_asid;
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uint64_t pm_guarded;
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int have_4_level_pt;
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int pm_privileged;
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volatile int pm_active;
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int pm_refs; /* ref count */
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struct pmap_statistics pm_stats; /* pmap statistics */
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uint64_t pm_apiakey[2];
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uint64_t pm_apdakey[2];
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uint64_t pm_apibkey[2];
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uint64_t pm_apdbkey[2];
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uint64_t pm_apgakey[2];
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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 /* non-cacheable memory */
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#define PMAP_DEVICE 0x2 /* device memory */
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#define PMAP_WC PMAP_DEVICE
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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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// [NCPUS]
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extern paddr_t zero_page;
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extern paddr_t copy_src_page;
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extern paddr_t copy_dst_page;
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void pagezero_cache(vaddr_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_resident_count(pmap) ((pmap)->pm_stats.resident_count)
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#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
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vaddr_t pmap_bootstrap(long kvo, paddr_t lpt1, long kernelstart,
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long kernelend, long ram_start, long ram_end);
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void pmap_postinit(void);
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void pmap_init_percpu(void);
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void pmap_kenter_cache(vaddr_t va, paddr_t pa, vm_prot_t prot, int cacheable);
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void pmap_page_ro(pmap_t pm, vaddr_t va, vm_prot_t prot);
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void pmap_page_rw(pmap_t pm, vaddr_t va);
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void pmap_setpauthkeys(struct pmap *);
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paddr_t pmap_steal_avail(size_t size, int align, void **kva);
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void pmap_avail_fixup(void);
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void pmap_physload_avail(void);
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#define PMAP_GROWKERNEL
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struct pv_entry;
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/* investigate */
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#define pmap_unuse_final(p) do { /* nothing */ } while (0)
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int pmap_fault_fixup(pmap_t, vaddr_t, vm_prot_t);
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#define __HAVE_PMAP_MPSAFE_ENTER_COW
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#define __HAVE_PMAP_POPULATE
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#define __HAVE_PMAP_PURGE
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#endif /* _KERNEL && !_LOCORE */
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#ifndef _LOCORE
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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 /* _ARM64_PMAP_H_ */ |