1 /* $NetBSD: mmu.c,v 1.8 2002/05/09 12:27:04 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 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 #include <sys/param.h> 40 #include <sys/systm.h> 41 42 #include <sh3/mmu.h> 43 #include <sh3/mmu_sh3.h> 44 #include <sh3/mmu_sh4.h> 45 46 /* Start MMU. call after exception vector is setuped. */ 47 void (*__sh_mmu_start)(void); 48 49 /* TLB access ops. */ 50 void (*__sh_tlb_invalidate_addr)(int, vaddr_t); 51 void (*__sh_tlb_invalidate_asid)(int); 52 void (*__sh_tlb_invalidate_all)(void); 53 void (*__sh_tlb_update)(int, vaddr_t, u_int32_t); 54 55 void 56 sh_mmu_init() 57 { 58 /* 59 * Asign function hook. but if only defined SH3 or SH4, they are called 60 * directly. see sh3/mmu.h 61 */ 62 #ifdef SH3 63 if (CPU_IS_SH3) { 64 __sh_mmu_start = sh3_mmu_start; 65 __sh_tlb_invalidate_addr = sh3_tlb_invalidate_addr; 66 __sh_tlb_invalidate_asid = sh3_tlb_invalidate_asid; 67 __sh_tlb_invalidate_all = sh3_tlb_invalidate_all; 68 __sh_tlb_update = sh3_tlb_update; 69 } 70 #endif 71 #ifdef SH4 72 if (CPU_IS_SH4) { 73 __sh_mmu_start = sh4_mmu_start; 74 __sh_tlb_invalidate_addr = sh4_tlb_invalidate_addr; 75 __sh_tlb_invalidate_asid = sh4_tlb_invalidate_asid; 76 __sh_tlb_invalidate_all = sh4_tlb_invalidate_all; 77 __sh_tlb_update = sh4_tlb_update; 78 } 79 #endif 80 } 81 82 void 83 sh_mmu_information() 84 { 85 u_int32_t r; 86 #ifdef SH3 87 if (CPU_IS_SH3) { 88 printf("4-way set-associative 128 TLB entries\n"); 89 r = _reg_read_4(SH3_MMUCR); 90 printf("%s mode, %s virtual storage mode\n", 91 r & SH3_MMUCR_IX 92 ? "ASID+VPN" : "VPN", 93 r & SH3_MMUCR_SV ? "single" : "multiple"); 94 } 95 #endif 96 #ifdef SH4 97 if (CPU_IS_SH4) { 98 printf("full-associative 4 ITLB, 64 UTLB entries\n"); 99 r = _reg_read_4(SH4_MMUCR); 100 printf("%s virtual storage mode, SQ access: kernel%s, ", 101 r & SH3_MMUCR_SV ? "single" : "multiple", 102 r & SH4_MMUCR_SQMD ? "" : "/user"); 103 printf("wired %d\n", (r & SH4_MMUCR_URB_MASK) >> 104 SH4_MMUCR_URB_SHIFT); 105 } 106 #endif 107 } 108 109 void 110 sh_tlb_set_asid(int asid) 111 { 112 113 _reg_write_4(SH_(PTEH), asid); 114 } 115