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Diffstat (limited to 'sys/alpha/include/pmap.h')
| -rw-r--r-- | sys/alpha/include/pmap.h | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/sys/alpha/include/pmap.h b/sys/alpha/include/pmap.h deleted file mode 100644 index 9dca988..0000000 --- a/sys/alpha/include/pmap.h +++ /dev/null @@ -1,250 +0,0 @@ -/*- - * Copyright (c) 1991 Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * the Systems Programming Group of the University of Utah Computer - * Science Department and William Jolitz of UUNET Technologies Inc. - * - * 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. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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. - * - * Derived from hp300 version by Mike Hibler, this version by William - * Jolitz uses a recursive map [a pde points to the page directory] to - * map the page tables using the pagetables themselves. This is done to - * reduce the impact on kernel virtual memory for lots of sparse address - * space, and to reduce the cost of memory to each process. - * - * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90 - * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91 - * from: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp - * $FreeBSD$ - */ - -#ifndef _MACHINE_PMAP_H_ -#define _MACHINE_PMAP_H_ - -#ifdef _KERNEL -#include <machine/chipset.h> -#include <sys/systm.h> -#endif - -/* - * Define meanings for a few software bits in the pte - */ -#define PG_V ALPHA_PTE_VALID -#define PG_FOR ALPHA_PTE_FAULT_ON_READ -#define PG_FOW ALPHA_PTE_FAULT_ON_WRITE -#define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE -#define PG_ASM ALPHA_PTE_ASM -#define PG_GH ALPHA_PTE_GRANULARITY -#define PG_KRE ALPHA_PTE_KR -#define PG_URE ALPHA_PTE_UR -#define PG_KWE ALPHA_PTE_KW -#define PG_UWE ALPHA_PTE_UW -#define PG_PROT ALPHA_PTE_PROT -#define PG_SHIFT 32 - -#define PG_W 0x00010000 /* software wired */ -#define PG_MANAGED 0x00020000 /* software managed */ - -/* - * Pte related macros - */ -#define VADDR(l1, l2, l3) (((l1) << ALPHA_L1SHIFT) \ - + ((l2) << ALPHA_L2SHIFT) \ - + ((l3) << ALPHA_L3SHIFT) - -#ifndef NKPT -#define NKPT 9 /* initial number of kernel page tables */ -#endif -#define NKLEV2MAPS 255 /* max number of lev2 page tables */ -#define NKLEV3MAPS (NKLEV2MAPS << ALPHA_PTSHIFT) /* max number of lev3 page tables */ - -/* - * The *PTDI values control the layout of virtual memory - * - * XXX This works for now, but I am not real happy with it, I'll fix it - * right after I fix locore.s and the magic 28K hole - * - * SMP_PRIVPAGES: The per-cpu address space is 0xff80000 -> 0xffbfffff - */ -#define PTLEV1I (NPTEPG-1) /* Lev0 entry that points to Lev0 */ -#define K0SEGLEV1I (NPTEPG/2) -#define K1SEGLEV1I (K0SEGLEV1I+(NPTEPG/4)) - -#define NUSERLEV2MAPS (NPTEPG/2) -#define NUSERLEV3MAPS (NUSERLEV2MAPS << ALPHA_PTSHIFT) - -#ifndef LOCORE - -#include <sys/queue.h> -#include <sys/_lock.h> -#include <sys/_mutex.h> - -typedef alpha_pt_entry_t pt_entry_t; - -#define PTESIZE sizeof(pt_entry_t) /* for assembly files */ - -/* - * Address of current address space page table maps - */ -#ifdef _KERNEL -extern pt_entry_t PTmap[]; /* lev3 page tables */ -extern pt_entry_t PTlev2[]; /* lev2 page tables */ -extern pt_entry_t PTlev1[]; /* lev1 page table */ -extern pt_entry_t PTlev1pte; /* pte that maps lev1 page table */ -#endif - -#ifdef _KERNEL -/* - * virtual address to page table entry and - * to physical address. - * Note: this work recursively, thus vtopte of a pte will give - * the corresponding lev1 that in turn maps it. - */ -#define vtopte(va) (PTmap + (alpha_btop(va) \ - & ((1 << 3*ALPHA_PTSHIFT)-1))) -#define vtophys(va) pmap_kextract((vm_offset_t)(va)) - -/* - * Routine: pmap_kextract - * Function: - * Extract the physical page address associated - * kernel virtual address. - */ -static __inline vm_offset_t -pmap_kextract(vm_offset_t va) -{ - vm_offset_t pa; - if (va >= ALPHA_K0SEG_BASE && va <= ALPHA_K0SEG_END) - pa = ALPHA_K0SEG_TO_PHYS(va); - else - pa = alpha_ptob(ALPHA_PTE_TO_PFN(*vtopte(va))) - | (va & PAGE_MASK); - return pa; -} - -static __inline vm_offset_t -alpha_XXX_dmamap(vm_offset_t va) -{ - vm_offset_t pa = pmap_kextract(va); - if (pa >= chipset.dmsize) - panic ("driver uses alpha_XXX_dmamap() for an address that" - "is not within direct map"); - if (chipset.pci_sgmap != NULL) - panic ("driver uses alpha_XXX_dmamap() on largemem system"); - return (pa + chipset.dmoffset); -} - -#endif /* _KERNEL */ - -/* - * Pmap stuff - */ -struct pv_entry; - -struct md_page { - int pv_list_count; - TAILQ_HEAD(,pv_entry) pv_list; -}; - -#define ASN_BITS 8 -#define ASNGEN_BITS (32 - ASN_BITS) -#define ASNGEN_MASK ((1 << ASNGEN_BITS) - 1) - -struct pmap { - struct mtx pm_mtx; - pt_entry_t *pm_lev1; /* KVA of lev0map */ - TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */ - u_int32_t pm_active; /* active cpus */ - struct { - u_int32_t asn:ASN_BITS; /* address space number */ - u_int32_t gen:ASNGEN_BITS; /* generation number */ - } pm_asn[MAXSMPCPU]; - struct pmap_statistics pm_stats; /* pmap statistics */ - struct vm_page *pm_ptphint; /* pmap ptp hint */ - LIST_ENTRY(pmap) pm_list; /* list of all pmaps. */ -}; - -typedef struct pmap *pmap_t; - -#ifdef _KERNEL -extern struct pmap kernel_pmap_store; -#define kernel_pmap (&kernel_pmap_store) - -#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) -#define PMAP_LOCK_ASSERT(pmap, type) \ - mtx_assert(&(pmap)->pm_mtx, (type)) -#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) -#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ - NULL, MTX_DEF) -#define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) -#define PMAP_MTX(pmap) (&(pmap)->pm_mtx) -#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) -#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) -#endif - -/* - * For each vm_page_t, there is a list of all currently valid virtual - * mappings of that page. An entry is a pv_entry_t, the list is pv_table. - */ -typedef struct pv_entry { - pmap_t pv_pmap; /* pmap where mapping lies */ - vm_offset_t pv_va; /* virtual address for mapping */ - TAILQ_ENTRY(pv_entry) pv_list; - TAILQ_ENTRY(pv_entry) pv_plist; - vm_page_t pv_ptem; /* VM page for pte */ -} *pv_entry_t; - -#ifdef _KERNEL - -extern vm_offset_t phys_avail[]; -extern vm_offset_t virtual_avail; -extern vm_offset_t virtual_end; - -struct vmspace; - -#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) - -vm_offset_t pmap_steal_memory(vm_size_t); -void pmap_bootstrap(vm_offset_t, u_int); -void pmap_kenter(vm_offset_t va, vm_offset_t pa); -void *pmap_kenter_temporary(vm_offset_t pa, int i); -void pmap_kremove(vm_offset_t); -void pmap_setdevram(unsigned long long basea, vm_offset_t sizea); -int pmap_uses_prom_console(void); -void *pmap_mapdev(vm_offset_t, vm_size_t); -void pmap_unmapdev(vm_offset_t, vm_size_t); -unsigned *pmap_pte(pmap_t, vm_offset_t) __pure2; -void pmap_set_opt (unsigned *); -void pmap_set_opt_bsp (void); -void pmap_deactivate(struct thread *td); -void pmap_emulate_reference(struct vmspace *vm, vm_offset_t v, int user, int write); - -#endif /* _KERNEL */ - -#endif /* !LOCORE */ - -#endif /* !_MACHINE_PMAP_H_ */ |
