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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _MACH_KPM_H 27 #define _MACH_KPM_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* kpm prototypes : routines defined in uts/sfmmu/vm/hat_sfmmu.c file */ 34 extern kmutex_t *sfmmu_page_enter(page_t *); 35 extern void sfmmu_page_exit(kmutex_t *); 36 extern void sfmmu_cache_flush(pfn_t, int); 37 extern void sfmmu_page_cache_array(page_t *, int, int, pgcnt_t); 38 extern cpuset_t sfmmu_pageunload(page_t *, struct sf_hment *, int); 39 extern int tst_tnc(page_t *pp, pgcnt_t); 40 extern void conv_tnc(page_t *pp, int); 41 extern int fnd_mapping_sz(page_t *); 42 extern int sfmmu_page_spl_held(struct page *); 43 44 /* kpm prototypes : routines defined in uts/sun4[uv]/vm/mach_kpm.c file */ 45 extern void sfmmu_kpm_pageunload(page_t *); 46 extern void sfmmu_kpm_vac_unload(page_t *, caddr_t); 47 extern void sfmmu_kpm_hme_unload(page_t *); 48 extern kpm_hlk_t *sfmmu_kpm_kpmp_enter(page_t *, pgcnt_t); 49 extern void sfmmu_kpm_kpmp_exit(kpm_hlk_t *kpmp); 50 extern void sfmmu_kpm_page_cache(page_t *, int, int); 51 52 /* flags for hat_pagecachectl */ 53 #define HAT_CACHE 0x1 54 #define HAT_UNCACHE 0x2 55 #define HAT_TMPNC 0x4 56 57 /* 58 * kstat data 59 */ 60 struct sfmmu_global_stat sfmmu_global_stat; 61 62 /* kpm globals */ 63 #ifdef DEBUG 64 /* 65 * Flush the TLB on kpm mapout. Note: Xcalls are used (again) for the 66 * required TLB shootdowns in this case, so handle w/ care. Off by default. 67 */ 68 int kpm_tlb_flush; 69 #endif /* DEBUG */ 70 71 /* 72 * kpm_page lock hash. 73 * All slots should be used equally and 2 adjacent kpm_page_t's 74 * shouldn't have their mutexes in the same cache line. 75 */ 76 #ifdef DEBUG 77 int kpmp_hash_debug; 78 #define KPMP_HASH(kpp) (kpmp_hash_debug ? &kpmp_table[0] : &kpmp_table[ \ 79 ((uintptr_t)(kpp) + ((uintptr_t)(kpp) >> kpmp_shift)) \ 80 & (kpmp_table_sz - 1)]) 81 #else /* !DEBUG */ 82 #define KPMP_HASH(kpp) &kpmp_table[ \ 83 ((uintptr_t)(kpp) + ((uintptr_t)(kpp) >> kpmp_shift)) \ 84 & (kpmp_table_sz - 1)] 85 #endif /* DEBUG */ 86 87 #ifdef DEBUG 88 #define KPMP_SHASH(kpp) (kpmp_hash_debug ? &kpmp_stable[0] : &kpmp_stable[ \ 89 (((uintptr_t)(kpp) << kpmp_shift) + (uintptr_t)(kpp)) \ 90 & (kpmp_stable_sz - 1)]) 91 #else /* !DEBUG */ 92 #define KPMP_SHASH(kpp) &kpmp_stable[ \ 93 (((uintptr_t)(kpp) << kpmp_shift) + (uintptr_t)(kpp)) \ 94 & (kpmp_stable_sz - 1)] 95 #endif /* DEBUG */ 96 97 /* 98 * kpm virtual address to physical address. Any changes in this macro must 99 * also be ported to the assembly implementation in sfmmu_asm.s 100 */ 101 #ifdef VAC 102 #define SFMMU_KPM_VTOP(vaddr, paddr) { \ 103 uintptr_t r, v; \ 104 \ 105 r = ((vaddr) - kpm_vbase) >> (uintptr_t)kpm_size_shift; \ 106 (paddr) = (vaddr) - kpm_vbase; \ 107 if (r != 0) { \ 108 v = ((uintptr_t)(vaddr) >> MMU_PAGESHIFT) & \ 109 vac_colors_mask; \ 110 (paddr) -= r << kpm_size_shift; \ 111 if (r > v) \ 112 (paddr) += (r - v) << MMU_PAGESHIFT; \ 113 else \ 114 (paddr) -= r << MMU_PAGESHIFT; \ 115 } \ 116 } 117 #else /* VAC */ 118 #define SFMMU_KPM_VTOP(vaddr, paddr) { \ 119 (paddr) = (vaddr) - kpm_vbase; \ 120 } 121 #endif /* VAC */ 122 123 #ifdef __cplusplus 124 } 125 #endif 126 127 #endif /* _MACH_KPM_H */ 128