target/loongarch/cpu-csr.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * QEMU LoongArch CSRs
   4  *
   5  * Copyright (c) 2021 Loongson Technology Corporation Limited
   6  */
   7
   8 #ifndef LOONGARCH_CPU_CSR_H
   9 #define LOONGARCH_CPU_CSR_H
  10
  11 #include "hw/registerfields.h"
  12
  13 /* Based on kernel definitions: arch/loongarch/include/asm/loongarch.h */
  14
  15 /* Basic CSRs */
  16 #define LOONGARCH_CSR_CRMD           0x0 /* Current mode info */
  17
  18 #define LOONGARCH_CSR_PRMD           0x1 /* Prev-exception mode info */
  19 FIELD(CSR_PRMD, PPLV, 0, 2)
  20 FIELD(CSR_PRMD, PIE, 2, 1)
  21 FIELD(CSR_PRMD, PWE, 3, 1)
  22
  23 #define LOONGARCH_CSR_EUEN           0x2 /* Extended unit enable */
  24 FIELD(CSR_EUEN, FPE, 0, 1)
  25 FIELD(CSR_EUEN, SXE, 1, 1)
  26 FIELD(CSR_EUEN, ASXE, 2, 1)
  27 FIELD(CSR_EUEN, BTE, 3, 1)
  28
  29 #define LOONGARCH_CSR_MISC           0x3 /* Misc config */
  30 FIELD(CSR_MISC, VA32, 0, 4)
  31 FIELD(CSR_MISC, DRDTL, 4, 4)
  32 FIELD(CSR_MISC, RPCNTL, 8, 4)
  33 FIELD(CSR_MISC, ALCL, 12, 4)
  34 FIELD(CSR_MISC, DWPL, 16, 3)
  35
  36 #define LOONGARCH_CSR_ECFG           0x4 /* Exception config */
  37 FIELD(CSR_ECFG, LIE, 0, 13)
  38 FIELD(CSR_ECFG, VS, 16, 3)
  39
  40 #define LOONGARCH_CSR_ESTAT          0x5 /* Exception status */
  41 FIELD(CSR_ESTAT, IS, 0, 13)
  42 FIELD(CSR_ESTAT, ECODE, 16, 6)
  43 FIELD(CSR_ESTAT, ESUBCODE, 22, 9)
  44
  45 #define LOONGARCH_CSR_ERA            0x6 /* Exception return address */
  46
  47 #define LOONGARCH_CSR_BADV           0x7 /* Bad virtual address */
  48
  49 #define LOONGARCH_CSR_BADI           0x8 /* Bad instruction */
  50
  51 #define LOONGARCH_CSR_EENTRY         0xc /* Exception entry address */
  52
  53 /* TLB related CSRs */
  54 #define LOONGARCH_CSR_TLBIDX         0x10 /* TLB Index, EHINV, PageSize, NP */
  55 FIELD(CSR_TLBIDX, INDEX, 0, 12)
  56 FIELD(CSR_TLBIDX, PS, 24, 6)
  57 FIELD(CSR_TLBIDX, NE, 31, 1)
  58
  59 #define LOONGARCH_CSR_TLBEHI         0x11 /* TLB EntryHi */
  60 FIELD(CSR_TLBEHI_32, VPPN, 13, 19)
  61 FIELD(CSR_TLBEHI_64, VPPN, 13, 35)
  62
  63 #define LOONGARCH_CSR_TLBELO0        0x12 /* TLB EntryLo0 */
  64 #define LOONGARCH_CSR_TLBELO1        0x13 /* TLB EntryLo1 */
  65 FIELD(TLBENTRY, V, 0, 1)
  66 FIELD(TLBENTRY, D, 1, 1)
  67 FIELD(TLBENTRY, PLV, 2, 2)
  68 FIELD(TLBENTRY, MAT, 4, 2)
  69 FIELD(TLBENTRY, G, 6, 1)
  70 FIELD(TLBENTRY_32, PPN, 8, 24)
  71 FIELD(TLBENTRY_64, PPN, 12, 36)
  72 FIELD(TLBENTRY_64, NR, 61, 1)
  73 FIELD(TLBENTRY_64, NX, 62, 1)
  74 FIELD(TLBENTRY_64, RPLV, 63, 1)
  75
  76 #define LOONGARCH_CSR_ASID           0x18 /* Address space identifier */
  77 FIELD(CSR_ASID, ASID, 0, 10)
  78 FIELD(CSR_ASID, ASIDBITS, 16, 8)
  79
  80 /* Page table base address when badv[47] = 0 */
  81 #define LOONGARCH_CSR_PGDL           0x19
  82 /* Page table base address when badv[47] = 1 */
  83 #define LOONGARCH_CSR_PGDH           0x1a
  84
  85 #define LOONGARCH_CSR_PGD            0x1b /* Page table base address */
  86
  87 /* Page walk controller's low addr */
  88 #define LOONGARCH_CSR_PWCL           0x1c
  89 FIELD(CSR_PWCL, PTBASE, 0, 5)
  90 FIELD(CSR_PWCL, PTWIDTH, 5, 5)
  91 FIELD(CSR_PWCL, DIR1_BASE, 10, 5)
  92 FIELD(CSR_PWCL, DIR1_WIDTH, 15, 5)
  93 FIELD(CSR_PWCL, DIR2_BASE, 20, 5)
  94 FIELD(CSR_PWCL, DIR2_WIDTH, 25, 5)
  95 FIELD(CSR_PWCL, PTEWIDTH, 30, 2)
  96
  97 /* Page walk controller's high addr */
  98 #define LOONGARCH_CSR_PWCH           0x1d
  99 FIELD(CSR_PWCH, DIR3_BASE, 0, 6)
 100 FIELD(CSR_PWCH, DIR3_WIDTH, 6, 6)
 101 FIELD(CSR_PWCH, DIR4_BASE, 12, 6)
 102 FIELD(CSR_PWCH, DIR4_WIDTH, 18, 6)
 103
 104 #define LOONGARCH_CSR_STLBPS         0x1e /* Stlb page size */
 105 FIELD(CSR_STLBPS, PS, 0, 5)
 106
 107 #define LOONGARCH_CSR_RVACFG         0x1f /* Reduced virtual address config */
 108 FIELD(CSR_RVACFG, RBITS, 0, 4)
 109
 110 /* Config CSRs */
 111 #define LOONGARCH_CSR_CPUID          0x20 /* CPU core id */
 112
 113 #define LOONGARCH_CSR_PRCFG1         0x21 /* Config1 */
 114 FIELD(CSR_PRCFG1, SAVE_NUM, 0, 4)
 115 FIELD(CSR_PRCFG1, TIMER_BITS, 4, 8)
 116 FIELD(CSR_PRCFG1, VSMAX, 12, 3)
 117
 118 #define LOONGARCH_CSR_PRCFG2         0x22 /* Config2 */
 119
 120 #define LOONGARCH_CSR_PRCFG3         0x23 /* Config3 */
 121 FIELD(CSR_PRCFG3, TLB_TYPE, 0, 4)
 122 FIELD(CSR_PRCFG3, MTLB_ENTRY, 4, 8)
 123 FIELD(CSR_PRCFG3, STLB_WAYS, 12, 8)
 124 FIELD(CSR_PRCFG3, STLB_SETS, 20, 8)
 125
 126 /*
 127  * Save registers count can read from PRCFG1.SAVE_NUM
 128  * The Min count is 1. Max count is 15.
 129  */
 130 #define LOONGARCH_CSR_SAVE(N)        (0x30 + N)
 131
 132 /* Timer CSRs */
 133 #define LOONGARCH_CSR_TID            0x40 /* Timer ID */
 134
 135 #define LOONGARCH_CSR_TCFG           0x41 /* Timer config */
 136 FIELD(CSR_TCFG, EN, 0, 1)
 137 FIELD(CSR_TCFG, PERIODIC, 1, 1)
 138 FIELD(CSR_TCFG, INIT_VAL, 2, 46)
 139
 140 #define LOONGARCH_CSR_TVAL           0x42 /* Timer ticks remain */
 141
 142 #define LOONGARCH_CSR_CNTC           0x43 /* Timer offset */
 143
 144 #define LOONGARCH_CSR_TICLR          0x44 /* Timer interrupt clear */
 145
 146 /* LLBCTL CSRs */
 147 #define LOONGARCH_CSR_LLBCTL         0x60 /* LLBit control */
 148 FIELD(CSR_LLBCTL, ROLLB, 0, 1)
 149 FIELD(CSR_LLBCTL, WCLLB, 1, 1)
 150 FIELD(CSR_LLBCTL, KLO, 2, 1)
 151
 152 /* Implement dependent */
 153 #define LOONGARCH_CSR_IMPCTL1        0x80 /* LoongArch config1 */
 154
 155 #define LOONGARCH_CSR_IMPCTL2        0x81 /* LoongArch config2*/
 156
 157 /* TLB Refill CSRs */
 158 #define LOONGARCH_CSR_TLBRENTRY      0x88 /* TLB refill exception address */
 159 #define LOONGARCH_CSR_TLBRBADV       0x89 /* TLB refill badvaddr */
 160 #define LOONGARCH_CSR_TLBRERA        0x8a /* TLB refill ERA */
 161 #define LOONGARCH_CSR_TLBRSAVE       0x8b /* KScratch for TLB refill */
 162 FIELD(CSR_TLBRERA, ISTLBR, 0, 1)
 163 FIELD(CSR_TLBRERA, PC, 2, 62)
 164 #define LOONGARCH_CSR_TLBRELO0       0x8c /* TLB refill entrylo0 */
 165 #define LOONGARCH_CSR_TLBRELO1       0x8d /* TLB refill entrylo1 */
 166 #define LOONGARCH_CSR_TLBREHI        0x8e /* TLB refill entryhi */
 167 FIELD(CSR_TLBREHI, PS, 0, 6)
 168 FIELD(CSR_TLBREHI_32, VPPN, 13, 19)
 169 FIELD(CSR_TLBREHI_64, VPPN, 13, 35)
 170 #define LOONGARCH_CSR_TLBRPRMD       0x8f /* TLB refill mode info */
 171 FIELD(CSR_TLBRPRMD, PPLV, 0, 2)
 172 FIELD(CSR_TLBRPRMD, PIE, 2, 1)
 173 FIELD(CSR_TLBRPRMD, PWE, 4, 1)
 174
 175 /* Machine Error CSRs */
 176 #define LOONGARCH_CSR_MERRCTL        0x90 /* ERRCTL */
 177 FIELD(CSR_MERRCTL, ISMERR, 0, 1)
 178 #define LOONGARCH_CSR_MERRINFO1      0x91
 179 #define LOONGARCH_CSR_MERRINFO2      0x92
 180 #define LOONGARCH_CSR_MERRENTRY      0x93 /* MError exception base */
 181 #define LOONGARCH_CSR_MERRERA        0x94 /* MError exception PC */
 182 #define LOONGARCH_CSR_MERRSAVE       0x95 /* KScratch for error exception */
 183
 184 #define LOONGARCH_CSR_CTAG           0x98 /* TagLo + TagHi */
 185
 186 /* Direct map windows CSRs*/
 187 #define LOONGARCH_CSR_DMW(N)         (0x180 + N)
 188 FIELD(CSR_DMW, PLV0, 0, 1)
 189 FIELD(CSR_DMW, PLV1, 1, 1)
 190 FIELD(CSR_DMW, PLV2, 2, 1)
 191 FIELD(CSR_DMW, PLV3, 3, 1)
 192 FIELD(CSR_DMW, MAT, 4, 2)
 193 FIELD(CSR_DMW_32, PSEG, 25, 3)
 194 FIELD(CSR_DMW_32, VSEG, 29, 3)
 195 FIELD(CSR_DMW_64, VSEG, 60, 4)
 196
 197 /* Debug CSRs */
 198 #define LOONGARCH_CSR_DBG            0x500 /* debug config */
 199 FIELD(CSR_DBG, DST, 0, 1)
 200 FIELD(CSR_DBG, DREV, 1, 7)
 201 FIELD(CSR_DBG, DEI, 8, 1)
 202 FIELD(CSR_DBG, DCL, 9, 1)
 203 FIELD(CSR_DBG, DFW, 10, 1)
 204 FIELD(CSR_DBG, DMW, 11, 1)
 205 FIELD(CSR_DBG, ECODE, 16, 6)
 206
 207 #define LOONGARCH_CSR_DERA           0x501 /* Debug era */
 208 #define LOONGARCH_CSR_DSAVE          0x502 /* Debug save */
 209
 210 #endif /* LOONGARCH_CPU_CSR_H */