/* $NetBSD: pmap.h,v 1.28 2014/02/28 05:32:01 matt 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_OEA_PMAP_H_ #define _POWERPC_OEA_PMAP_H_ #ifdef _LOCORE #error use assym.h instead #endif #if defined(_LKM) || defined(_MODULE) #error this file should not be included by loadable kernel modules #endif #ifdef _KERNEL_OPT #include "opt_ppcarch.h" #endif #include /* * Pmap stuff */ struct pmap { #ifdef PPC_OEA64 struct steg *pm_steg_table; /* segment table pointer */ /* XXX need way to track exec pages */ #endif #if defined(PPC_OEA) || defined (PPC_OEA64_BRIDGE) register_t pm_sr[16]; /* segments used in this pmap */ int pm_exec[16]; /* counts of exec mappings */ #endif register_t pm_vsid; /* VSID bits */ int pm_refs; /* ref count */ struct pmap_statistics pm_stats; /* pmap statistics */ unsigned int pm_evictions; /* pvo's not in page table */ #ifdef PPC_OEA64 unsigned int pm_ste_evictions; #endif }; struct pmap_ops { int (*pmapop_pte_spill)(struct pmap *, vaddr_t, bool); void (*pmapop_real_memory)(paddr_t *, psize_t *); void (*pmapop_init)(void); void (*pmapop_virtual_space)(vaddr_t *, vaddr_t *); pmap_t (*pmapop_create)(void); void (*pmapop_reference)(pmap_t); void (*pmapop_destroy)(pmap_t); void (*pmapop_copy)(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); void (*pmapop_update)(pmap_t); int (*pmapop_enter)(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); void (*pmapop_remove)(pmap_t, vaddr_t, vaddr_t); void (*pmapop_kenter_pa)(vaddr_t, paddr_t, vm_prot_t, u_int); void (*pmapop_kremove)(vaddr_t, vsize_t); bool (*pmapop_extract)(pmap_t, vaddr_t, paddr_t *); void (*pmapop_protect)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); void (*pmapop_unwire)(pmap_t, vaddr_t); void (*pmapop_page_protect)(struct vm_page *, vm_prot_t); bool (*pmapop_query_bit)(struct vm_page *, int); bool (*pmapop_clear_bit)(struct vm_page *, int); void (*pmapop_activate)(struct lwp *); void (*pmapop_deactivate)(struct lwp *); void (*pmapop_pinit)(pmap_t); void (*pmapop_procwr)(struct proc *, vaddr_t, size_t); void (*pmapop_pte_print)(volatile struct pte *); void (*pmapop_pteg_check)(void); void (*pmapop_print_mmuregs)(void); void (*pmapop_print_pte)(pmap_t, vaddr_t); void (*pmapop_pteg_dist)(void); void (*pmapop_pvo_verify)(void); vaddr_t (*pmapop_steal_memory)(vsize_t, vaddr_t *, vaddr_t *); void (*pmapop_bootstrap)(paddr_t, paddr_t); }; #ifdef _KERNEL #include __BEGIN_DECLS #include #include #if defined (PPC_OEA) || defined (PPC_OEA64_BRIDGE) extern register_t iosrtable[]; #endif extern int pmap_use_altivec; #define pmap_clear_modify(pg) (pmap_clear_bit((pg), PTE_CHG)) #define pmap_clear_reference(pg) (pmap_clear_bit((pg), PTE_REF)) #define pmap_is_modified(pg) (pmap_query_bit((pg), PTE_CHG)) #define pmap_is_referenced(pg) (pmap_query_bit((pg), PTE_REF)) #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) /* ARGSUSED */ static inline void pmap_remove_all(struct pmap *pmap) { /* Nothing. */ } #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 #define PMAP_NEEDS_FIXUP #endif extern volatile struct pteg *pmap_pteg_table; extern unsigned int pmap_pteg_cnt; extern unsigned int pmap_pteg_mask; void pmap_bootstrap(vaddr_t, vaddr_t); bool pmap_extract(pmap_t, vaddr_t, paddr_t *); bool pmap_query_bit(struct vm_page *, int); bool pmap_clear_bit(struct vm_page *, int); void pmap_real_memory(paddr_t *, psize_t *); void pmap_procwr(struct proc *, vaddr_t, size_t); int pmap_pte_spill(pmap_t, vaddr_t, bool); int pmap_ste_spill(pmap_t, vaddr_t, bool); void pmap_pinit(pmap_t); u_int powerpc_mmap_flags(paddr_t); #define POWERPC_MMAP_FLAG_MASK 0xf #define POWERPC_MMAP_FLAG_PREFETCHABLE 0x1 #define POWERPC_MMAP_FLAG_CACHEABLE 0x2 #define pmap_phys_address(ppn) (ppn & ~POWERPC_MMAP_FLAG_MASK) #define pmap_mmap_flags(ppn) powerpc_mmap_flags(ppn) static inline paddr_t vtophys (vaddr_t); /* * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. * * Note: This won't work if we have more memory than can be direct-mapped * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have * this problem, too. */ #if !defined(PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) #define PMAP_MAP_POOLPAGE(pa) (pa) #define PMAP_UNMAP_POOLPAGE(pa) (pa) #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) #endif static inline paddr_t vtophys(vaddr_t va) { paddr_t pa; if (pmap_extract(pmap_kernel(), va, &pa)) return pa; KASSERTMSG(0, "vtophys: pmap_extract of %#"PRIxVADDR" failed", va); return (paddr_t) -1; } #ifdef PMAP_NEEDS_FIXUP extern const struct pmap_ops *pmapops; extern const struct pmap_ops pmap32_ops; extern const struct pmap_ops pmap64_ops; extern const struct pmap_ops pmap64bridge_ops; static inline void pmap_setup32(void) { pmapops = &pmap32_ops; } static inline void pmap_setup64(void) { pmapops = &pmap64_ops; } static inline void pmap_setup64bridge(void) { pmapops = &pmap64bridge_ops; } #endif bool pmap_pageidlezero (paddr_t); void pmap_syncicache (paddr_t, psize_t); #ifdef PPC_OEA64 vaddr_t pmap_setusr (vaddr_t); vaddr_t pmap_unsetusr (void); #endif #ifdef PPC_OEA64_BRIDGE int pmap_setup_segment0_map(int use_large_pages, ...); #endif #define PMAP_MD_PREFETCHABLE 0x2000000 #define PMAP_STEAL_MEMORY #define PMAP_NEED_PROCWR void pmap_zero_page(paddr_t); void pmap_copy_page(paddr_t, paddr_t); LIST_HEAD(pvo_head, pvo_entry); #define __HAVE_VM_PAGE_MD struct vm_page_md { unsigned int mdpg_attrs; struct pvo_head mdpg_pvoh; #ifdef MODULAR uintptr_t mdpg_dummy[3]; #endif }; #define VM_MDPAGE_INIT(pg) do { \ (pg)->mdpage.mdpg_attrs = 0; \ LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ } while (/*CONSTCOND*/0) __END_DECLS #endif /* _KERNEL */ #endif /* _POWERPC_OEA_PMAP_H_ */