1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _VM_SEG_KPM_H 28 #define _VM_SEG_KPM_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Kernel Physical Mapping (segkpm) segment driver. 38 */ 39 40 #include <vm/kpm.h> 41 42 struct segkpm_data { 43 ushort_t *skd_va_select; /* page_create_va kpm vaddr bin count */ 44 short skd_nvcolors; /* VAC colors to deal with */ 45 uchar_t skd_prot; 46 }; 47 48 /* 49 * segkpm create needs some platform knowledge 50 */ 51 struct segkpm_crargs { 52 uint_t prot; 53 short nvcolors; /* VAC # virtual colors, 0 for PAC. */ 54 }; 55 56 extern struct seg *segkpm; 57 extern u_offset_t kpm_pgoff; 58 extern size_t kpm_pgsz; 59 extern uint_t kpm_pgshft; 60 extern uint_t kpmp2pshft; 61 extern pgcnt_t kpmpnpgs; 62 63 /* kpm controls */ 64 extern int kpm_enable; 65 extern int kpm_smallpages; 66 extern int segmap_kpm; 67 68 /* 69 * kpm_page_t macros: 70 * . bytes (b) to kpm pages (kpmp) 71 * . pages (p) to kpm pages (kpmp), and back (with and without roundup) 72 * . kpm page offset in bytes 73 * . pages (p) modulo kpm pages (kpmp) 74 */ 75 #define btokpmp(x) ((x) >> kpm_pgshft) 76 #define btokpmpr(x) (((x) + kpm_pgoff) >> kpm_pgshft) 77 #define ptokpmp(x) ((x) >> kpmp2pshft) 78 #define ptokpmpr(x) (((x) + (kpmpnpgs - 1)) >> kpmp2pshft) 79 #define kpmptop(x) ((x) << kpmp2pshft) 80 #define kpmpageoff(x) ((x) & kpm_pgoff) 81 #define pmodkpmp(x) ((x) & (kpmpnpgs - 1)) 82 83 #ifdef SEGKPM_SUPPORT 84 85 #define IS_KPM_ADDR(addr) \ 86 ((addr) >= segkpm->s_base && (addr) < (segkpm->s_base + segkpm->s_size)) 87 88 #define KPMPAGE_T_SZ \ 89 ((kpm_smallpages == 0) ? sizeof (kpm_page_t) : sizeof (kpm_spage_t)) 90 91 #else /* SEGKPM_SUPPORT */ 92 93 #define IS_KPM_ADDR(addr) (segkpm != NULL) 94 #define KPMPAGE_T_SZ (0) 95 96 #endif /* SEGKPM_SUPPORT */ 97 98 #ifdef _KERNEL 99 /* 100 * Public seg_kpm segment operations. 101 */ 102 extern int segkpm_create(struct seg *, void *); 103 extern faultcode_t segkpm_fault(struct hat *, struct seg *, caddr_t, 104 size_t, enum fault_type, enum seg_rw); 105 106 /* 107 * Public seg_kpm interfaces. 108 */ 109 extern caddr_t segkpm_create_va(u_offset_t); 110 extern void segkpm_mapout_validkpme(struct kpme *); 111 112 #endif /* _KERNEL */ 113 114 #ifdef __cplusplus 115 } 116 #endif 117 118 #endif /* _VM_SEG_KPM_H */ 119