1 /* $NetBSD: pmap3x.h,v 1.16 2001/09/10 21:19:27 chris 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Physical map structures exported to the VM code. 41 * XXX - Does user-level code really see this struct? 42 */ 43 44 struct pmap { 45 struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */ 46 u_long pm_a_phys; /* MMU level-A phys addr */ 47 struct simplelock pm_lock; /* lock on pmap */ 48 int pm_refcount; /* reference count */ 49 int pm_version; 50 }; 51 52 #ifdef _KERNEL 53 extern struct pmap kernel_pmap; 54 #define pmap_kernel() (&kernel_pmap) 55 56 /* Common function for pmap_resident_count(), pmap_wired_count() */ 57 segsz_t pmap_count __P((pmap_t, int)); 58 59 /* This needs to be a macro for kern_sysctl.c */ 60 #define pmap_resident_count(pmap) (pmap_count((pmap), 0)) 61 62 /* This needs to be a macro for vm_mmap.c */ 63 #define pmap_wired_count(pmap) (pmap_count((pmap), 1)) 64 65 /* We use the PA plus some low bits for device mmap. */ 66 #define pmap_phys_address(addr) (addr) 67 68 #define pmap_update(pmap) /* nothing (yet) */ 69 70 /* Map a given physical region to a virtual region */ 71 vaddr_t pmap_map __P((vaddr_t, paddr_t, paddr_t, int)); 72 73 /* 74 * Flags to tell pmap_enter `this is not to be cached', etc. 75 * Since physical addresses are always aligned, we can use 76 * the low order bits for this. 77 */ 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