1 /* 2 * Copyright (c) 1993 Adam Glass 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Adam Glass. 16 * 4. The name of the Author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Header: /cvsroot/src/sys/arch/sun3/include/pmap.h,v 1.5 1993/08/28 15:36:36 glass Exp $ 32 */ 33 34 #ifndef _PMAP_MACHINE_ 35 #define _PMAP_MACHINE_ 36 37 /* 38 * Pmap stuff 39 * [some ideas borrowed from torek, but no code] 40 */ 41 42 struct context_state { 43 queue_chain_t context_link; 44 int context_num; 45 struct pmap *context_upmap; 46 }; 47 48 typedef struct context_state *context_t; 49 50 struct pmap { 51 int pm_refcount; /* pmap reference count */ 52 simple_lock_data_t pm_lock; /* lock on pmap */ 53 struct pmap_statistics pm_stats; /* pmap statistics */ 54 context_t pm_context; /* context if any */ 55 int pm_version; 56 unsigned char *pm_segmap; 57 }; 58 59 typedef struct pmap *pmap_t; 60 61 extern pmap_t kernel_pmap; 62 63 struct pmeg_state { 64 queue_chain_t pmeg_link; 65 int pmeg_index; 66 pmap_t pmeg_owner; 67 int pmeg_owner_version; 68 vm_offset_t pmeg_va; 69 int pmeg_wired_count; 70 int pmeg_reserved; 71 int pmeg_vpages; 72 }; 73 74 typedef struct pmeg_state *pmeg_t; 75 76 #define PMAP_ACTIVATE(pmap, pcbp, iscurproc) \ 77 pmap_activate(pmap, pcbp) 78 #define PMAP_DEACTIVATE(pmap, pcbp) \ 79 pmap_deactivate(pmap, pcbp) 80 81 #define pmap_kernel() (kernel_pmap) 82 83 /* like the sparc port, use the lower bits of a pa which must be page 84 * aligned anyway to pass memtype, caching information. 85 */ 86 #define PMAP_MMEM 0x0 87 #define PMAP_OBIO 0x1 88 #define PMAP_VME16D 0x2 89 #define PMAP_VME32D 0x3 90 #define PMAP_MEMMASK 0x3 91 #define PMAP_NC 0x4 92 #define PMAP_SPECMASK 0x7 93 94 extern vm_offset_t virtual_avail, virtual_end; 95 extern vm_offset_t avail_start, avail_end; 96 97 #endif _PMAP_MACHINE_ 98