1 /* $NetBSD: pmap3x.h,v 1.26 2008/12/09 20:45:45 pooka Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jeremy Cooper. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Physical map structures exported to the VM code. 34 * XXX - Does user-level code really see this struct? 35 */ 36 37 #include <sys/simplelock.h> 38 39 struct pmap { 40 struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */ 41 u_long pm_a_phys; /* MMU level-A phys addr */ 42 struct simplelock pm_lock; /* lock on pmap */ 43 int pm_refcount; /* reference count */ 44 int pm_version; 45 }; 46 47 #ifdef _KERNEL 48 /* Common function for pmap_resident_count(), pmap_wired_count() */ 49 segsz_t pmap_count(pmap_t, int); 50 51 /* This needs to be a macro for kern_sysctl.c */ 52 #define pmap_resident_count(pmap) (pmap_count((pmap), 0)) 53 54 /* This needs to be a macro for vm_mmap.c */ 55 #define pmap_wired_count(pmap) (pmap_count((pmap), 1)) 56 57 /* We use the PA plus some low bits for device mmap. */ 58 #define pmap_phys_address(addr) (addr) 59 60 #define pmap_update(pmap) /* nothing (yet) */ 61 62 /* Map a given physical region to a virtual region */ 63 vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, int); 64 65 static __inline void 66 pmap_remove_all(struct pmap *pmap) 67 { 68 /* Nothing. */ 69 } 70 71 /* 72 * Flags to tell pmap_enter `this is not to be cached', etc. 73 * Since physical addresses are always aligned, we can use 74 * the low order bits for this. 75 */ 76 #define PMAP_OBMEM 0x00 /* unused */ 77 #define PMAP_OBIO 0x00 /* unused */ 78 #define PMAP_VME16 0x10 /* pmap will add the necessary offset */ 79 #define PMAP_VME32 0x20 /* etc. */ 80 #define PMAP_NC 0x40 /* tells pmap_enter to set PTE_CI */ 81 #define PMAP_SPEC 0xFF /* mask to get all above. */ 82 83 #endif /* _KERNEL */ 84