LXR qemu/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/* Base on kernal 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 */
  19FIELD(CSR_PRMD, PPLV, 0, 2)
  20FIELD(CSR_PRMD, PIE, 2, 1)
  21FIELD(CSR_PRMD, PWE, 3, 1)
  22
  23#define LOONGARCH_CSR_EUEN           0x2 /* Extended unit enable */
  24FIELD(CSR_EUEN, FPE, 0, 1)
  25FIELD(CSR_EUEN, SXE, 1, 1)
  26FIELD(CSR_EUEN, ASXE, 2, 1)
  27FIELD(CSR_EUEN, BTE, 3, 1)
  28
  29#define LOONGARCH_CSR_MISC           0x3 /* Misc config */
  30FIELD(CSR_MISC, VA32, 0, 4)
  31FIELD(CSR_MISC, DRDTL, 4, 4)
  32FIELD(CSR_MISC, RPCNTL, 8, 4)
  33FIELD(CSR_MISC, ALCL, 12, 4)
  34FIELD(CSR_MISC, DWPL, 16, 3)
  35
  36#define LOONGARCH_CSR_ECFG           0x4 /* Exception config */
  37FIELD(CSR_ECFG, LIE, 0, 13)
  38FIELD(CSR_ECFG, VS, 16, 3)
  39
  40#define LOONGARCH_CSR_ESTAT          0x5 /* Exception status */
  41FIELD(CSR_ESTAT, IS, 0, 13)
  42FIELD(CSR_ESTAT, ECODE, 16, 6)
  43FIELD(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 */
  55FIELD(CSR_TLBIDX, INDEX, 0, 12)
  56FIELD(CSR_TLBIDX, PS, 24, 6)
  57FIELD(CSR_TLBIDX, NE, 31, 1)
  58
  59#define LOONGARCH_CSR_TLBEHI         0x11 /* TLB EntryHi */
  60FIELD(CSR_TLBEHI, VPPN, 13, 35)
  61
  62#define LOONGARCH_CSR_TLBELO0        0x12 /* TLB EntryLo0 */
  63#define LOONGARCH_CSR_TLBELO1        0x13 /* TLB EntryLo1 */
  64FIELD(TLBENTRY, V, 0, 1)
  65FIELD(TLBENTRY, D, 1, 1)
  66FIELD(TLBENTRY, PLV, 2, 2)
  67FIELD(TLBENTRY, MAT, 4, 2)
  68FIELD(TLBENTRY, G, 6, 1)
  69FIELD(TLBENTRY, PPN, 12, 36)
  70FIELD(TLBENTRY, NR, 61, 1)
  71FIELD(TLBENTRY, NX, 62, 1)
  72FIELD(TLBENTRY, RPLV, 63, 1)
  73
  74#define LOONGARCH_CSR_ASID           0x18 /* Address space identifier */
  75FIELD(CSR_ASID, ASID, 0, 10)
  76FIELD(CSR_ASID, ASIDBITS, 16, 8)
  77
  78/* Page table base address when badv[47] = 0 */
  79#define LOONGARCH_CSR_PGDL           0x19
  80/* Page table base address when badv[47] = 1 */
  81#define LOONGARCH_CSR_PGDH           0x1a
  82
  83#define LOONGARCH_CSR_PGD            0x1b /* Page table base address */
  84
  85/* Page walk controller's low addr */
  86#define LOONGARCH_CSR_PWCL           0x1c
  87FIELD(CSR_PWCL, PTBASE, 0, 5)
  88FIELD(CSR_PWCL, PTWIDTH, 5, 5)
  89FIELD(CSR_PWCL, DIR1_BASE, 10, 5)
  90FIELD(CSR_PWCL, DIR1_WIDTH, 15, 5)
  91FIELD(CSR_PWCL, DIR2_BASE, 20, 5)
  92FIELD(CSR_PWCL, DIR2_WIDTH, 25, 5)
  93FIELD(CSR_PWCL, PTEWIDTH, 30, 2)
  94
  95/* Page walk controller's high addr */
  96#define LOONGARCH_CSR_PWCH           0x1d
  97FIELD(CSR_PWCH, DIR3_BASE, 0, 6)
  98FIELD(CSR_PWCH, DIR3_WIDTH, 6, 6)
  99FIELD(CSR_PWCH, DIR4_BASE, 12, 6)
 100FIELD(CSR_PWCH, DIR4_WIDTH, 18, 6)
 101
 102#define LOONGARCH_CSR_STLBPS         0x1e /* Stlb page size */
 103FIELD(CSR_STLBPS, PS, 0, 5)
 104
 105#define LOONGARCH_CSR_RVACFG         0x1f /* Reduced virtual address config */
 106FIELD(CSR_RVACFG, RBITS, 0, 4)
 107
 108/* Config CSRs */
 109#define LOONGARCH_CSR_CPUID          0x20 /* CPU core id */
 110
 111#define LOONGARCH_CSR_PRCFG1         0x21 /* Config1 */
 112FIELD(CSR_PRCFG1, SAVE_NUM, 0, 4)
 113FIELD(CSR_PRCFG1, TIMER_BITS, 4, 8)
 114FIELD(CSR_PRCFG1, VSMAX, 12, 3)
 115
 116#define LOONGARCH_CSR_PRCFG2         0x22 /* Config2 */
 117
 118#define LOONGARCH_CSR_PRCFG3         0x23 /* Config3 */
 119FIELD(CSR_PRCFG3, TLB_TYPE, 0, 4)
 120FIELD(CSR_PRCFG3, MTLB_ENTRY, 4, 8)
 121FIELD(CSR_PRCFG3, STLB_WAYS, 12, 8)
 122FIELD(CSR_PRCFG3, STLB_SETS, 20, 8)
 123
 124/*
 125 * Save registers count can read from PRCFG1.SAVE_NUM
 126 * The Min count is 1. Max count is 15.
 127 */
 128#define LOONGARCH_CSR_SAVE(N)        (0x30 + N)
 129
 130/* Timer CSRs */
 131#define LOONGARCH_CSR_TID            0x40 /* Timer ID */
 132
 133#define LOONGARCH_CSR_TCFG           0x41 /* Timer config */
 134FIELD(CSR_TCFG, EN, 0, 1)
 135FIELD(CSR_TCFG, PERIODIC, 1, 1)
 136FIELD(CSR_TCFG, INIT_VAL, 2, 46)
 137
 138#define LOONGARCH_CSR_TVAL           0x42 /* Timer ticks remain */
 139
 140#define LOONGARCH_CSR_CNTC           0x43 /* Timer offset */
 141
 142#define LOONGARCH_CSR_TICLR          0x44 /* Timer interrupt clear */
 143
 144/* LLBCTL CSRs */
 145#define LOONGARCH_CSR_LLBCTL         0x60 /* LLBit control */
 146FIELD(CSR_LLBCTL, ROLLB, 0, 1)
 147FIELD(CSR_LLBCTL, WCLLB, 1, 1)
 148FIELD(CSR_LLBCTL, KLO, 2, 1)
 149
 150/* Implement dependent */
 151#define LOONGARCH_CSR_IMPCTL1        0x80 /* LoongArch config1 */
 152
 153#define LOONGARCH_CSR_IMPCTL2        0x81 /* LoongArch config2*/
 154
 155/* TLB Refill CSRs */
 156#define LOONGARCH_CSR_TLBRENTRY      0x88 /* TLB refill exception address */
 157#define LOONGARCH_CSR_TLBRBADV       0x89 /* TLB refill badvaddr */
 158#define LOONGARCH_CSR_TLBRERA        0x8a /* TLB refill ERA */
 159#define LOONGARCH_CSR_TLBRSAVE       0x8b /* KScratch for TLB refill */
 160FIELD(CSR_TLBRERA, ISTLBR, 0, 1)
 161FIELD(CSR_TLBRERA, PC, 2, 62)
 162#define LOONGARCH_CSR_TLBRELO0       0x8c /* TLB refill entrylo0 */
 163#define LOONGARCH_CSR_TLBRELO1       0x8d /* TLB refill entrylo1 */
 164#define LOONGARCH_CSR_TLBREHI        0x8e /* TLB refill entryhi */
 165FIELD(CSR_TLBREHI, PS, 0, 6)
 166FIELD(CSR_TLBREHI, VPPN, 13, 35)
 167#define LOONGARCH_CSR_TLBRPRMD       0x8f /* TLB refill mode info */
 168FIELD(CSR_TLBRPRMD, PPLV, 0, 2)
 169FIELD(CSR_TLBRPRMD, PIE, 2, 1)
 170FIELD(CSR_TLBRPRMD, PWE, 4, 1)
 171
 172/* Machine Error CSRs */
 173#define LOONGARCH_CSR_MERRCTL        0x90 /* ERRCTL */
 174FIELD(CSR_MERRCTL, ISMERR, 0, 1)
 175#define LOONGARCH_CSR_MERRINFO1      0x91
 176#define LOONGARCH_CSR_MERRINFO2      0x92
 177#define LOONGARCH_CSR_MERRENTRY      0x93 /* MError exception base */
 178#define LOONGARCH_CSR_MERRERA        0x94 /* MError exception PC */
 179#define LOONGARCH_CSR_MERRSAVE       0x95 /* KScratch for error exception */
 180
 181#define LOONGARCH_CSR_CTAG           0x98 /* TagLo + TagHi */
 182
 183/* Direct map windows CSRs*/
 184#define LOONGARCH_CSR_DMW(N)         (0x180 + N)
 185FIELD(CSR_DMW, PLV0, 0, 1)
 186FIELD(CSR_DMW, PLV1, 1, 1)
 187FIELD(CSR_DMW, PLV2, 2, 1)
 188FIELD(CSR_DMW, PLV3, 3, 1)
 189FIELD(CSR_DMW, MAT, 4, 2)
 190FIELD(CSR_DMW, VSEG, 60, 4)
 191
 192#define dmw_va2pa(va) \
 193    (va & MAKE_64BIT_MASK(0, TARGET_VIRT_ADDR_SPACE_BITS))
 194
 195/* Debug CSRs */
 196#define LOONGARCH_CSR_DBG            0x500 /* debug config */
 197FIELD(CSR_DBG, DST, 0, 1)
 198FIELD(CSR_DBG, DREV, 1, 7)
 199FIELD(CSR_DBG, DEI, 8, 1)
 200FIELD(CSR_DBG, DCL, 9, 1)
 201FIELD(CSR_DBG, DFW, 10, 1)
 202FIELD(CSR_DBG, DMW, 11, 1)
 203FIELD(CSR_DBG, ECODE, 16, 6)
 204
 205#define LOONGARCH_CSR_DERA           0x501 /* Debug era */
 206#define LOONGARCH_CSR_DSAVE          0x502 /* Debug save */
 207
 208#endif /* LOONGARCH_CPU_CSR_H */
 209