1/*- 2 * Copyright (c) 2001 Jake Burkholder. 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 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
26 * $FreeBSD: head/sys/sparc64/include/tlb.h 91170 2002-02-23 20:59:35Z jake $ |
27 */ 28 29#ifndef _MACHINE_TLB_H_ 30#define _MACHINE_TLB_H_ 31 32#define TLB_SLOT_COUNT 64 33 34#define TLB_SLOT_TSB_KERNEL_MIN 60 /* XXX */ --- 49 unchanged lines hidden (view full) --- 84 85/* 86 * Some tlb operations must be atomical, so no interrupt or trap can be allowed 87 * while they are in progress. Traps should not happen, but interrupts need to 88 * be explicitely disabled. critical_enter() cannot be used here, since it only 89 * disables soft interrupts. 90 * XXX: is something like this needed elsewhere, too? 91 */ |
92 93static __inline void 94tlb_dtlb_context_primary_demap(void) 95{ 96 stxa(TLB_DEMAP_PRIMARY | TLB_DEMAP_CONTEXT, ASI_DMMU_DEMAP, 0); 97 membar(Sync); 98} 99 --- 15 unchanged lines hidden (view full) --- 115 } 116} 117 118static __inline void 119tlb_dtlb_store(vm_offset_t va, u_long ctx, struct tte tte) 120{ 121 u_long pst; 122 |
123 pst = intr_disable(); |
124 stxa(AA_DMMU_TAR, ASI_DMMU, 125 TLB_TAR_VA(va) | TLB_TAR_CTX(ctx)); 126 stxa(0, ASI_DTLB_DATA_IN_REG, tte.tte_data); 127 membar(Sync); |
128 intr_restore(pst); |
129} 130 131static __inline void 132tlb_dtlb_store_slot(vm_offset_t va, u_long ctx, struct tte tte, int slot) 133{ 134 u_long pst; 135 |
136 pst = intr_disable(); |
137 stxa(AA_DMMU_TAR, ASI_DMMU, TLB_TAR_VA(va) | TLB_TAR_CTX(ctx)); 138 stxa(TLB_DAR_SLOT(slot), ASI_DTLB_DATA_ACCESS_REG, tte.tte_data); 139 membar(Sync); |
140 intr_restore(pst); |
141} 142 143static __inline void 144tlb_itlb_context_primary_demap(void) 145{ 146 stxa(TLB_DEMAP_PRIMARY | TLB_DEMAP_CONTEXT, ASI_IMMU_DEMAP, 0); 147 membar(Sync); 148} --- 17 unchanged lines hidden (view full) --- 166 } 167} 168 169static __inline void 170tlb_itlb_store(vm_offset_t va, u_long ctx, struct tte tte) 171{ 172 u_long pst; 173 |
174 pst = intr_disable(); |
175 stxa(AA_IMMU_TAR, ASI_IMMU, TLB_TAR_VA(va) | TLB_TAR_CTX(ctx)); 176 stxa(0, ASI_ITLB_DATA_IN_REG, tte.tte_data); 177 if (ctx == TLB_CTX_KERNEL) 178 flush(va); 179 else { 180 /* 181 * flush probably not needed and impossible here, no access to 182 * user page. 183 */ 184 membar(Sync); 185 } |
186 intr_restore(pst); |
187} 188 189static __inline void 190tlb_context_primary_demap(u_int tlb) 191{ 192 if (tlb & TLB_DTLB) 193 tlb_dtlb_context_primary_demap(); 194 if (tlb & TLB_ITLB) 195 tlb_itlb_context_primary_demap(); 196} 197 198static __inline void 199tlb_itlb_store_slot(vm_offset_t va, u_long ctx, struct tte tte, int slot) 200{ 201 u_long pst; 202 |
203 pst = intr_disable(); |
204 stxa(AA_IMMU_TAR, ASI_IMMU, TLB_TAR_VA(va) | TLB_TAR_CTX(ctx)); 205 stxa(TLB_DAR_SLOT(slot), ASI_ITLB_DATA_ACCESS_REG, tte.tte_data); 206 flush(va); |
207 intr_restore(pst); |
208} 209 210static __inline void 211tlb_page_demap(u_int tlb, u_int ctx, vm_offset_t va) 212{ 213 if (tlb & TLB_DTLB) 214 tlb_dtlb_page_demap(ctx, va); 215 if (tlb & TLB_ITLB) --- 22 unchanged lines hidden --- |