1 /* $NetBSD: pmap3x.h,v 1.23 2006/10/01 03:53:27 tsutsui 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 #include <sys/lock.h> 45 46 struct pmap { 47 struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */ 48 u_long pm_a_phys; /* MMU level-A phys addr */ 49 struct simplelock pm_lock; /* lock on pmap */ 50 int pm_refcount; /* reference count */ 51 int pm_version; 52 }; 53 54 #ifdef _KERNEL 55 extern struct pmap kernel_pmap; 56 #define pmap_kernel() (&kernel_pmap) 57 58 /* Common function for pmap_resident_count(), pmap_wired_count() */ 59 segsz_t pmap_count(pmap_t, int); 60 61 /* This needs to be a macro for kern_sysctl.c */ 62 #define pmap_resident_count(pmap) (pmap_count((pmap), 0)) 63 64 /* This needs to be a macro for vm_mmap.c */ 65 #define pmap_wired_count(pmap) (pmap_count((pmap), 1)) 66 67 /* We use the PA plus some low bits for device mmap. */ 68 #define pmap_phys_address(addr) (addr) 69 70 #define pmap_update(pmap) /* nothing (yet) */ 71 72 /* Map a given physical region to a virtual region */ 73 vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, int); 74 75 static __inline void 76 pmap_remove_all(struct pmap *pmap) 77 { 78 /* Nothing. */ 79 } 80 81 /* 82 * Flags to tell pmap_enter `this is not to be cached', etc. 83 * Since physical addresses are always aligned, we can use 84 * the low order bits for this. 85 */ 86 #define PMAP_OBMEM 0x00 /* unused */ 87 #define PMAP_OBIO 0x00 /* unused */ 88 #define PMAP_VME16 0x10 /* pmap will add the necessary offset */ 89 #define PMAP_VME32 0x20 /* etc. */ 90 #define PMAP_NC 0x40 /* tells pmap_enter to set PTE_CI */ 91 #define PMAP_SPEC 0xFF /* mask to get all above. */ 92 93 #endif /* _KERNEL */ 94