| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * QEMU LoongArch CSRs |
| * |
| * Copyright (c) 2021 Loongson Technology Corporation Limited |
| */ |
| |
| #ifndef LOONGARCH_CPU_CSR_H |
| #define LOONGARCH_CPU_CSR_H |
| |
| #include "hw/registerfields.h" |
| |
| /* Based on kernel definitions: arch/loongarch/include/asm/loongarch.h */ |
| |
| /* Basic CSRs */ |
| #define LOONGARCH_CSR_CRMD 0x0 /* Current mode info */ |
| |
| #define LOONGARCH_CSR_PRMD 0x1 /* Prev-exception mode info */ |
| FIELD(CSR_PRMD, PPLV, 0, 2) |
| FIELD(CSR_PRMD, PIE, 2, 1) |
| FIELD(CSR_PRMD, PWE, 3, 1) |
| |
| #define LOONGARCH_CSR_EUEN 0x2 /* Extended unit enable */ |
| FIELD(CSR_EUEN, FPE, 0, 1) |
| FIELD(CSR_EUEN, SXE, 1, 1) |
| FIELD(CSR_EUEN, ASXE, 2, 1) |
| FIELD(CSR_EUEN, BTE, 3, 1) |
| |
| #define LOONGARCH_CSR_MISC 0x3 /* Misc config */ |
| FIELD(CSR_MISC, VA32, 0, 4) |
| FIELD(CSR_MISC, DRDTL, 4, 4) |
| FIELD(CSR_MISC, RPCNTL, 8, 4) |
| FIELD(CSR_MISC, ALCL, 12, 4) |
| FIELD(CSR_MISC, DWPL, 16, 3) |
| |
| #define LOONGARCH_CSR_ECFG 0x4 /* Exception config */ |
| FIELD(CSR_ECFG, LIE, 0, 13) |
| FIELD(CSR_ECFG, VS, 16, 3) |
| |
| #define LOONGARCH_CSR_ESTAT 0x5 /* Exception status */ |
| FIELD(CSR_ESTAT, IS, 0, 13) |
| FIELD(CSR_ESTAT, ECODE, 16, 6) |
| FIELD(CSR_ESTAT, ESUBCODE, 22, 9) |
| |
| #define LOONGARCH_CSR_ERA 0x6 /* Exception return address */ |
| |
| #define LOONGARCH_CSR_BADV 0x7 /* Bad virtual address */ |
| |
| #define LOONGARCH_CSR_BADI 0x8 /* Bad instruction */ |
| |
| #define LOONGARCH_CSR_EENTRY 0xc /* Exception entry address */ |
| |
| /* TLB related CSRs */ |
| #define LOONGARCH_CSR_TLBIDX 0x10 /* TLB Index, EHINV, PageSize, NP */ |
| FIELD(CSR_TLBIDX, INDEX, 0, 12) |
| FIELD(CSR_TLBIDX, PS, 24, 6) |
| FIELD(CSR_TLBIDX, NE, 31, 1) |
| |
| #define LOONGARCH_CSR_TLBEHI 0x11 /* TLB EntryHi */ |
| FIELD(CSR_TLBEHI_32, VPPN, 13, 19) |
| FIELD(CSR_TLBEHI_64, VPPN, 13, 35) |
| |
| #define LOONGARCH_CSR_TLBELO0 0x12 /* TLB EntryLo0 */ |
| #define LOONGARCH_CSR_TLBELO1 0x13 /* TLB EntryLo1 */ |
| FIELD(TLBENTRY, V, 0, 1) |
| FIELD(TLBENTRY, D, 1, 1) |
| FIELD(TLBENTRY, PLV, 2, 2) |
| FIELD(TLBENTRY, MAT, 4, 2) |
| FIELD(TLBENTRY, G, 6, 1) |
| FIELD(TLBENTRY_32, PPN, 8, 24) |
| FIELD(TLBENTRY_64, PPN, 12, 36) |
| FIELD(TLBENTRY_64, NR, 61, 1) |
| FIELD(TLBENTRY_64, NX, 62, 1) |
| FIELD(TLBENTRY_64, RPLV, 63, 1) |
| |
| #define LOONGARCH_CSR_ASID 0x18 /* Address space identifier */ |
| FIELD(CSR_ASID, ASID, 0, 10) |
| FIELD(CSR_ASID, ASIDBITS, 16, 8) |
| |
| /* Page table base address when badv[47] = 0 */ |
| #define LOONGARCH_CSR_PGDL 0x19 |
| /* Page table base address when badv[47] = 1 */ |
| #define LOONGARCH_CSR_PGDH 0x1a |
| |
| #define LOONGARCH_CSR_PGD 0x1b /* Page table base address */ |
| |
| /* Page walk controller's low addr */ |
| #define LOONGARCH_CSR_PWCL 0x1c |
| FIELD(CSR_PWCL, PTBASE, 0, 5) |
| FIELD(CSR_PWCL, PTWIDTH, 5, 5) |
| FIELD(CSR_PWCL, DIR1_BASE, 10, 5) |
| FIELD(CSR_PWCL, DIR1_WIDTH, 15, 5) |
| FIELD(CSR_PWCL, DIR2_BASE, 20, 5) |
| FIELD(CSR_PWCL, DIR2_WIDTH, 25, 5) |
| FIELD(CSR_PWCL, PTEWIDTH, 30, 2) |
| |
| /* Page walk controller's high addr */ |
| #define LOONGARCH_CSR_PWCH 0x1d |
| FIELD(CSR_PWCH, DIR3_BASE, 0, 6) |
| FIELD(CSR_PWCH, DIR3_WIDTH, 6, 6) |
| FIELD(CSR_PWCH, DIR4_BASE, 12, 6) |
| FIELD(CSR_PWCH, DIR4_WIDTH, 18, 6) |
| |
| #define LOONGARCH_CSR_STLBPS 0x1e /* Stlb page size */ |
| FIELD(CSR_STLBPS, PS, 0, 5) |
| |
| #define LOONGARCH_CSR_RVACFG 0x1f /* Reduced virtual address config */ |
| FIELD(CSR_RVACFG, RBITS, 0, 4) |
| |
| /* Config CSRs */ |
| #define LOONGARCH_CSR_CPUID 0x20 /* CPU core id */ |
| |
| #define LOONGARCH_CSR_PRCFG1 0x21 /* Config1 */ |
| FIELD(CSR_PRCFG1, SAVE_NUM, 0, 4) |
| FIELD(CSR_PRCFG1, TIMER_BITS, 4, 8) |
| FIELD(CSR_PRCFG1, VSMAX, 12, 3) |
| |
| #define LOONGARCH_CSR_PRCFG2 0x22 /* Config2 */ |
| |
| #define LOONGARCH_CSR_PRCFG3 0x23 /* Config3 */ |
| FIELD(CSR_PRCFG3, TLB_TYPE, 0, 4) |
| FIELD(CSR_PRCFG3, MTLB_ENTRY, 4, 8) |
| FIELD(CSR_PRCFG3, STLB_WAYS, 12, 8) |
| FIELD(CSR_PRCFG3, STLB_SETS, 20, 8) |
| |
| /* |
| * Save registers count can read from PRCFG1.SAVE_NUM |
| * The Min count is 1. Max count is 15. |
| */ |
| #define LOONGARCH_CSR_SAVE(N) (0x30 + N) |
| |
| /* Timer CSRs */ |
| #define LOONGARCH_CSR_TID 0x40 /* Timer ID */ |
| |
| #define LOONGARCH_CSR_TCFG 0x41 /* Timer config */ |
| FIELD(CSR_TCFG, EN, 0, 1) |
| FIELD(CSR_TCFG, PERIODIC, 1, 1) |
| FIELD(CSR_TCFG, INIT_VAL, 2, 46) |
| |
| #define LOONGARCH_CSR_TVAL 0x42 /* Timer ticks remain */ |
| |
| #define LOONGARCH_CSR_CNTC 0x43 /* Timer offset */ |
| |
| #define LOONGARCH_CSR_TICLR 0x44 /* Timer interrupt clear */ |
| |
| /* LLBCTL CSRs */ |
| #define LOONGARCH_CSR_LLBCTL 0x60 /* LLBit control */ |
| FIELD(CSR_LLBCTL, ROLLB, 0, 1) |
| FIELD(CSR_LLBCTL, WCLLB, 1, 1) |
| FIELD(CSR_LLBCTL, KLO, 2, 1) |
| |
| /* Implement dependent */ |
| #define LOONGARCH_CSR_IMPCTL1 0x80 /* LoongArch config1 */ |
| |
| #define LOONGARCH_CSR_IMPCTL2 0x81 /* LoongArch config2*/ |
| |
| /* TLB Refill CSRs */ |
| #define LOONGARCH_CSR_TLBRENTRY 0x88 /* TLB refill exception address */ |
| #define LOONGARCH_CSR_TLBRBADV 0x89 /* TLB refill badvaddr */ |
| #define LOONGARCH_CSR_TLBRERA 0x8a /* TLB refill ERA */ |
| #define LOONGARCH_CSR_TLBRSAVE 0x8b /* KScratch for TLB refill */ |
| FIELD(CSR_TLBRERA, ISTLBR, 0, 1) |
| FIELD(CSR_TLBRERA, PC, 2, 62) |
| #define LOONGARCH_CSR_TLBRELO0 0x8c /* TLB refill entrylo0 */ |
| #define LOONGARCH_CSR_TLBRELO1 0x8d /* TLB refill entrylo1 */ |
| #define LOONGARCH_CSR_TLBREHI 0x8e /* TLB refill entryhi */ |
| FIELD(CSR_TLBREHI, PS, 0, 6) |
| FIELD(CSR_TLBREHI_32, VPPN, 13, 19) |
| FIELD(CSR_TLBREHI_64, VPPN, 13, 35) |
| #define LOONGARCH_CSR_TLBRPRMD 0x8f /* TLB refill mode info */ |
| FIELD(CSR_TLBRPRMD, PPLV, 0, 2) |
| FIELD(CSR_TLBRPRMD, PIE, 2, 1) |
| FIELD(CSR_TLBRPRMD, PWE, 4, 1) |
| |
| /* Machine Error CSRs */ |
| #define LOONGARCH_CSR_MERRCTL 0x90 /* ERRCTL */ |
| FIELD(CSR_MERRCTL, ISMERR, 0, 1) |
| #define LOONGARCH_CSR_MERRINFO1 0x91 |
| #define LOONGARCH_CSR_MERRINFO2 0x92 |
| #define LOONGARCH_CSR_MERRENTRY 0x93 /* MError exception base */ |
| #define LOONGARCH_CSR_MERRERA 0x94 /* MError exception PC */ |
| #define LOONGARCH_CSR_MERRSAVE 0x95 /* KScratch for error exception */ |
| |
| #define LOONGARCH_CSR_CTAG 0x98 /* TagLo + TagHi */ |
| |
| /* Direct map windows CSRs*/ |
| #define LOONGARCH_CSR_DMW(N) (0x180 + N) |
| FIELD(CSR_DMW, PLV0, 0, 1) |
| FIELD(CSR_DMW, PLV1, 1, 1) |
| FIELD(CSR_DMW, PLV2, 2, 1) |
| FIELD(CSR_DMW, PLV3, 3, 1) |
| FIELD(CSR_DMW, MAT, 4, 2) |
| FIELD(CSR_DMW_32, PSEG, 25, 3) |
| FIELD(CSR_DMW_32, VSEG, 29, 3) |
| FIELD(CSR_DMW_64, VSEG, 60, 4) |
| |
| /* Debug CSRs */ |
| #define LOONGARCH_CSR_DBG 0x500 /* debug config */ |
| FIELD(CSR_DBG, DST, 0, 1) |
| FIELD(CSR_DBG, DREV, 1, 7) |
| FIELD(CSR_DBG, DEI, 8, 1) |
| FIELD(CSR_DBG, DCL, 9, 1) |
| FIELD(CSR_DBG, DFW, 10, 1) |
| FIELD(CSR_DBG, DMW, 11, 1) |
| FIELD(CSR_DBG, ECODE, 16, 6) |
| |
| #define LOONGARCH_CSR_DERA 0x501 /* Debug era */ |
| #define LOONGARCH_CSR_DSAVE 0x502 /* Debug save */ |
| |
| #endif /* LOONGARCH_CPU_CSR_H */ |
