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target/loongarch: Add CSRs definition 

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-20-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Xiaojuan Yang 2022-06-06 20:43:09 +08:00 committed by Richard Henderson
parent d88b51dc26
commit 398cecb9c3
3 changed files with 313 additions and 0 deletions
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208
target/loongarch/cpu-csr.h Normal file
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@ -0,0 +1,208 @@
/* 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"
/* Base on kernal 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, 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, PPN, 12, 36)
FIELD(TLBENTRY, NR, 61, 1)
FIELD(TLBENTRY, NX, 62, 1)
FIELD(TLBENTRY, 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, 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, VSEG, 60, 4)
#define dmw_va2pa(va) \
(va & MAKE_64BIT_MASK(0, TARGET_VIRT_ADDR_SPACE_BITS))
/* 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 */

41
target/loongarch/cpu.c
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@ -16,6 +16,7 @@
#include "cpu.h"
#include "internals.h"
#include "fpu/softfloat-helpers.h"
#include "cpu-csr.h"
const char * const regnames[32] = {
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
@ -167,6 +168,8 @@ static void loongarch_la464_initfn(Object *obj)
data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 14);
data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 6);
env->cpucfg[20] = data;
env->CSR_ASID = FIELD_DP64(0, CSR_ASID, ASIDBITS, 0xa);
}
static void loongarch_cpu_list_entry(gpointer data, gpointer user_data)
@ -196,6 +199,44 @@ static void loongarch_cpu_reset(DeviceState *dev)
env->fcsr0_mask = FCSR0_M1 | FCSR0_M2 | FCSR0_M3;
env->fcsr0 = 0x0;
int n;
/* Set csr registers value after reset */
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0);
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0);
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1);
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0);
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATF, 1);
env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATM, 1);
env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, FPE, 0);
env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, SXE, 0);
env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, ASXE, 0);
env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, BTE, 0);
env->CSR_MISC = 0;
env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, VS, 0);
env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, LIE, 0);
env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2));
env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0);
env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0);
env->CSR_LLBCTL = FIELD_DP64(env->CSR_LLBCTL, CSR_LLBCTL, KLO, 0);
env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0);
env->CSR_MERRCTL = FIELD_DP64(env->CSR_MERRCTL, CSR_MERRCTL, ISMERR, 0);
env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, TLB_TYPE, 2);
env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, MTLB_ENTRY, 63);
env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_WAYS, 7);
env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS, 8);
for (n = 0; n < 4; n++) {
env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV0, 0);
env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV1, 0);
env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV2, 0);
env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV3, 0);
}
restore_fp_status(env);
cs->exception_index = -1;
}

64
target/loongarch/cpu.h
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@ -172,6 +172,15 @@ FIELD(CPUCFG20, L3IU_WAYS, 0, 16)
FIELD(CPUCFG20, L3IU_SETS, 16, 8)
FIELD(CPUCFG20, L3IU_SIZE, 24, 7)
/*CSR_CRMD */
FIELD(CSR_CRMD, PLV, 0, 2)
FIELD(CSR_CRMD, IE, 2, 1)
FIELD(CSR_CRMD, DA, 3, 1)
FIELD(CSR_CRMD, PG, 4, 1)
FIELD(CSR_CRMD, DATF, 5, 2)
FIELD(CSR_CRMD, DATM, 7, 2)
FIELD(CSR_CRMD, WE, 9, 1)
extern const char * const regnames[32];
extern const char * const fregnames[32];
@ -192,6 +201,61 @@ typedef struct CPUArchState {
uint64_t llval;
uint64_t badaddr;
/* LoongArch CSRs */
uint64_t CSR_CRMD;
uint64_t CSR_PRMD;
uint64_t CSR_EUEN;
uint64_t CSR_MISC;
uint64_t CSR_ECFG;
uint64_t CSR_ESTAT;
uint64_t CSR_ERA;
uint64_t CSR_BADV;
uint64_t CSR_BADI;
uint64_t CSR_EENTRY;
uint64_t CSR_TLBIDX;
uint64_t CSR_TLBEHI;
uint64_t CSR_TLBELO0;
uint64_t CSR_TLBELO1;
uint64_t CSR_ASID;
uint64_t CSR_PGDL;
uint64_t CSR_PGDH;
uint64_t CSR_PGD;
uint64_t CSR_PWCL;
uint64_t CSR_PWCH;
uint64_t CSR_STLBPS;
uint64_t CSR_RVACFG;
uint64_t CSR_PRCFG1;
uint64_t CSR_PRCFG2;
uint64_t CSR_PRCFG3;
uint64_t CSR_SAVE[16];
uint64_t CSR_TID;
uint64_t CSR_TCFG;
uint64_t CSR_TVAL;
uint64_t CSR_CNTC;
uint64_t CSR_TICLR;
uint64_t CSR_LLBCTL;
uint64_t CSR_IMPCTL1;
uint64_t CSR_IMPCTL2;
uint64_t CSR_TLBRENTRY;
uint64_t CSR_TLBRBADV;
uint64_t CSR_TLBRERA;
uint64_t CSR_TLBRSAVE;
uint64_t CSR_TLBRELO0;
uint64_t CSR_TLBRELO1;
uint64_t CSR_TLBREHI;
uint64_t CSR_TLBRPRMD;
uint64_t CSR_MERRCTL;
uint64_t CSR_MERRINFO1;
uint64_t CSR_MERRINFO2;
uint64_t CSR_MERRENTRY;
uint64_t CSR_MERRERA;
uint64_t CSR_MERRSAVE;
uint64_t CSR_CTAG;
uint64_t CSR_DMW[4];
uint64_t CSR_DBG;
uint64_t CSR_DERA;
uint64_t CSR_DSAVE;
} CPULoongArchState;
/**