tlb.h (5292B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (C) 2006-2012 Semihalf. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 21 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _MACHINE_TLB_H_ 31 #define _MACHINE_TLB_H_ 32 33 #if defined(BOOKE_E500) 34 35 /* PowerPC E500 MAS registers */ 36 #define MAS0_TLBSEL(x) ((x << 28) & 0x10000000) 37 #define MAS0_ESEL(x) ((x << 16) & 0x003F0000) 38 39 #define MAS0_TLBSEL1 0x10000000 40 #define MAS0_TLBSEL0 0x00000000 41 #define MAS0_ESEL_TLB1MASK 0x000F0000 42 #define MAS0_ESEL_TLB0MASK 0x00030000 43 #define MAS0_ESEL_SHIFT 16 44 #define MAS0_NV_MASK 0x00000003 45 #define MAS0_NV_SHIFT 0 46 47 #define MAS1_VALID 0x80000000 48 #define MAS1_IPROT 0x40000000 49 #define MAS1_TID_MASK 0x00FF0000 50 #define MAS1_TID_SHIFT 16 51 #define MAS1_TS_MASK 0x00001000 52 #define MAS1_TS_SHIFT 12 53 #define MAS1_TSIZE_MASK 0x00000F00 54 #define MAS1_TSIZE_SHIFT 8 55 56 #define TLB_SIZE_4K 1 57 #define TLB_SIZE_16K 2 58 #define TLB_SIZE_64K 3 59 #define TLB_SIZE_256K 4 60 #define TLB_SIZE_1M 5 61 #define TLB_SIZE_4M 6 62 #define TLB_SIZE_16M 7 63 #define TLB_SIZE_64M 8 64 #define TLB_SIZE_256M 9 65 #define TLB_SIZE_1G 10 66 #define TLB_SIZE_4G 11 67 68 #ifdef __powerpc64__ 69 #define MAS2_EPN_MASK 0xFFFFFFFFFFFFF000UL 70 #else 71 #define MAS2_EPN_MASK 0xFFFFF000 72 #endif 73 #define MAS2_EPN_SHIFT 12 74 #define MAS2_X0 0x00000040 75 #define MAS2_X1 0x00000020 76 #define MAS2_W 0x00000010 77 #define MAS2_I 0x00000008 78 #define MAS2_M 0x00000004 79 #define MAS2_G 0x00000002 80 #define MAS2_E 0x00000001 81 #define MAS2_WIMGE_MASK 0x0000007F 82 83 #define MAS3_RPN 0xFFFFF000 84 #define MAS3_RPN_SHIFT 12 85 #define MAS3_U0 0x00000200 86 #define MAS3_U1 0x00000100 87 #define MAS3_U2 0x00000080 88 #define MAS3_U3 0x00000040 89 #define MAS3_UX 0x00000020 90 #define MAS3_SX 0x00000010 91 #define MAS3_UW 0x00000008 92 #define MAS3_SW 0x00000004 93 #define MAS3_UR 0x00000002 94 #define MAS3_SR 0x00000001 95 96 #define MAS4_TLBSELD1 0x10000000 97 #define MAS4_TLBSELD0 0x00000000 98 #define MAS4_TIDSELD_MASK 0x00030000 99 #define MAS4_TIDSELD_SHIFT 16 100 #define MAS4_TSIZED_MASK 0x00000F00 101 #define MAS4_TSIZED_SHIFT 8 102 #define MAS4_X0D 0x00000040 103 #define MAS4_X1D 0x00000020 104 #define MAS4_WD 0x00000010 105 #define MAS4_ID 0x00000008 106 #define MAS4_MD 0x00000004 107 #define MAS4_GD 0x00000002 108 #define MAS4_ED 0x00000001 109 110 #define MAS6_SPID0_MASK 0x00FF0000 111 #define MAS6_SPID0_SHIFT 16 112 #define MAS6_SAS 0x00000001 113 114 #define MAS7_RPN 0x0000000F 115 116 #define MAS1_GETTID(mas1) (((mas1) & MAS1_TID_MASK) >> MAS1_TID_SHIFT) 117 118 #define MAS2_TLB0_ENTRY_IDX_MASK 0x0007f000 119 #define MAS2_TLB0_ENTRY_IDX_SHIFT 12 120 121 /* 122 * Maximum number of TLB1 entries used for a permanent mapping of kernel 123 * region (kernel image plus statically allocated data). 124 */ 125 #define KERNEL_REGION_MAX_TLB_ENTRIES 4 126 127 /* 128 * Use MAS2_X0 to mark entries which will be copied 129 * to AP CPUs during SMP bootstrap. As result entries 130 * marked with _TLB_ENTRY_SHARED will be shared by all CPUs. 131 */ 132 #define _TLB_ENTRY_SHARED (MAS2_X0) /* XXX under SMP? */ 133 #define _TLB_ENTRY_IO (MAS2_I | MAS2_G) 134 #define _TLB_ENTRY_MEM (MAS2_M) 135 136 #define TLB1_MAX_ENTRIES 64 137 138 #if !defined(LOCORE) 139 typedef struct tlb_entry { 140 vm_paddr_t phys; 141 vm_offset_t virt; 142 vm_size_t size; 143 uint32_t mas1; 144 #ifdef __powerpc64__ 145 uint64_t mas2; 146 #else 147 uint32_t mas2; 148 #endif 149 uint32_t mas3; 150 uint32_t mas7; 151 } tlb_entry_t; 152 153 void tlb1_inval_entry(unsigned int); 154 void tlb1_init(void); 155 #endif /* !LOCORE */ 156 157 #endif /* BOOKE_E500 */ 158 159 #define TID_KERNEL 0 /* TLB TID to use for kernel (shared) translations */ 160 #define TID_KRESERVED 1 /* Number of TIDs reserved for kernel */ 161 #define TID_URESERVED 0 /* Number of TIDs reserved for user */ 162 #define TID_MIN (TID_KRESERVED + TID_URESERVED) 163 #define TID_MAX 255 164 #define TID_NONE -1 165 166 #define TLB_UNLOCKED 0 167 168 #if !defined(LOCORE) 169 170 typedef int tlbtid_t; 171 172 struct pmap; 173 174 void tlb_lock(uintptr_t *); 175 void tlb_unlock(uintptr_t *); 176 void tlb1_ap_prep(void); 177 int tlb1_set_entry(vm_offset_t, vm_paddr_t, vm_size_t, uint32_t); 178 179 #endif /* !LOCORE */ 180 181 #endif /* _MACHINE_TLB_H_ */