1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (c) 2021 Loongson Technology Corporation Limited
8 #ifndef LOONGARCH_CPU_CSR_H
9 #define LOONGARCH_CPU_CSR_H
11 #include "hw/registerfields.h"
13 /* Base on kernal definitions: arch/loongarch/include/asm/loongarch.h */
16 #define LOONGARCH_CSR_CRMD 0x0 /* Current mode info */
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)
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)
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)
36 #define LOONGARCH_CSR_ECFG 0x4 /* Exception config */
37 FIELD(CSR_ECFG
, LIE
, 0, 13)
38 FIELD(CSR_ECFG
, VS
, 16, 3)
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)
45 #define LOONGARCH_CSR_ERA 0x6 /* Exception return address */
47 #define LOONGARCH_CSR_BADV 0x7 /* Bad virtual address */
49 #define LOONGARCH_CSR_BADI 0x8 /* Bad instruction */
51 #define LOONGARCH_CSR_EENTRY 0xc /* Exception entry address */
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)
59 #define LOONGARCH_CSR_TLBEHI 0x11 /* TLB EntryHi */
60 FIELD(CSR_TLBEHI
, VPPN
, 13, 35)
62 #define LOONGARCH_CSR_TLBELO0 0x12 /* TLB EntryLo0 */
63 #define LOONGARCH_CSR_TLBELO1 0x13 /* TLB EntryLo1 */
64 FIELD(TLBENTRY
, V
, 0, 1)
65 FIELD(TLBENTRY
, D
, 1, 1)
66 FIELD(TLBENTRY
, PLV
, 2, 2)
67 FIELD(TLBENTRY
, MAT
, 4, 2)
68 FIELD(TLBENTRY
, G
, 6, 1)
69 FIELD(TLBENTRY
, PPN
, 12, 36)
70 FIELD(TLBENTRY
, NR
, 61, 1)
71 FIELD(TLBENTRY
, NX
, 62, 1)
72 FIELD(TLBENTRY
, RPLV
, 63, 1)
74 #define LOONGARCH_CSR_ASID 0x18 /* Address space identifier */
75 FIELD(CSR_ASID
, ASID
, 0, 10)
76 FIELD(CSR_ASID
, ASIDBITS
, 16, 8)
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
83 #define LOONGARCH_CSR_PGD 0x1b /* Page table base address */
85 /* Page walk controller's low addr */
86 #define LOONGARCH_CSR_PWCL 0x1c
87 FIELD(CSR_PWCL
, PTBASE
, 0, 5)
88 FIELD(CSR_PWCL
, PTWIDTH
, 5, 5)
89 FIELD(CSR_PWCL
, DIR1_BASE
, 10, 5)
90 FIELD(CSR_PWCL
, DIR1_WIDTH
, 15, 5)
91 FIELD(CSR_PWCL
, DIR2_BASE
, 20, 5)
92 FIELD(CSR_PWCL
, DIR2_WIDTH
, 25, 5)
93 FIELD(CSR_PWCL
, PTEWIDTH
, 30, 2)
95 /* Page walk controller's high addr */
96 #define LOONGARCH_CSR_PWCH 0x1d
97 FIELD(CSR_PWCH
, DIR3_BASE
, 0, 6)
98 FIELD(CSR_PWCH
, DIR3_WIDTH
, 6, 6)
99 FIELD(CSR_PWCH
, DIR4_BASE
, 12, 6)
100 FIELD(CSR_PWCH
, DIR4_WIDTH
, 18, 6)
102 #define LOONGARCH_CSR_STLBPS 0x1e /* Stlb page size */
103 FIELD(CSR_STLBPS
, PS
, 0, 5)
105 #define LOONGARCH_CSR_RVACFG 0x1f /* Reduced virtual address config */
106 FIELD(CSR_RVACFG
, RBITS
, 0, 4)
109 #define LOONGARCH_CSR_CPUID 0x20 /* CPU core id */
111 #define LOONGARCH_CSR_PRCFG1 0x21 /* Config1 */
112 FIELD(CSR_PRCFG1
, SAVE_NUM
, 0, 4)
113 FIELD(CSR_PRCFG1
, TIMER_BITS
, 4, 8)
114 FIELD(CSR_PRCFG1
, VSMAX
, 12, 3)
116 #define LOONGARCH_CSR_PRCFG2 0x22 /* Config2 */
118 #define LOONGARCH_CSR_PRCFG3 0x23 /* Config3 */
119 FIELD(CSR_PRCFG3
, TLB_TYPE
, 0, 4)
120 FIELD(CSR_PRCFG3
, MTLB_ENTRY
, 4, 8)
121 FIELD(CSR_PRCFG3
, STLB_WAYS
, 12, 8)
122 FIELD(CSR_PRCFG3
, STLB_SETS
, 20, 8)
125 * Save registers count can read from PRCFG1.SAVE_NUM
126 * The Min count is 1. Max count is 15.
128 #define LOONGARCH_CSR_SAVE(N) (0x30 + N)
131 #define LOONGARCH_CSR_TID 0x40 /* Timer ID */
133 #define LOONGARCH_CSR_TCFG 0x41 /* Timer config */
134 FIELD(CSR_TCFG
, EN
, 0, 1)
135 FIELD(CSR_TCFG
, PERIODIC
, 1, 1)
136 FIELD(CSR_TCFG
, INIT_VAL
, 2, 46)
138 #define LOONGARCH_CSR_TVAL 0x42 /* Timer ticks remain */
140 #define LOONGARCH_CSR_CNTC 0x43 /* Timer offset */
142 #define LOONGARCH_CSR_TICLR 0x44 /* Timer interrupt clear */
145 #define LOONGARCH_CSR_LLBCTL 0x60 /* LLBit control */
146 FIELD(CSR_LLBCTL
, ROLLB
, 0, 1)
147 FIELD(CSR_LLBCTL
, WCLLB
, 1, 1)
148 FIELD(CSR_LLBCTL
, KLO
, 2, 1)
150 /* Implement dependent */
151 #define LOONGARCH_CSR_IMPCTL1 0x80 /* LoongArch config1 */
153 #define LOONGARCH_CSR_IMPCTL2 0x81 /* LoongArch config2*/
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 */
160 FIELD(CSR_TLBRERA
, ISTLBR
, 0, 1)
161 FIELD(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 */
165 FIELD(CSR_TLBREHI
, PS
, 0, 6)
166 FIELD(CSR_TLBREHI
, VPPN
, 13, 35)
167 #define LOONGARCH_CSR_TLBRPRMD 0x8f /* TLB refill mode info */
168 FIELD(CSR_TLBRPRMD
, PPLV
, 0, 2)
169 FIELD(CSR_TLBRPRMD
, PIE
, 2, 1)
170 FIELD(CSR_TLBRPRMD
, PWE
, 4, 1)
172 /* Machine Error CSRs */
173 #define LOONGARCH_CSR_MERRCTL 0x90 /* ERRCTL */
174 FIELD(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 */
181 #define LOONGARCH_CSR_CTAG 0x98 /* TagLo + TagHi */
183 /* Direct map windows CSRs*/
184 #define LOONGARCH_CSR_DMW(N) (0x180 + N)
185 FIELD(CSR_DMW
, PLV0
, 0, 1)
186 FIELD(CSR_DMW
, PLV1
, 1, 1)
187 FIELD(CSR_DMW
, PLV2
, 2, 1)
188 FIELD(CSR_DMW
, PLV3
, 3, 1)
189 FIELD(CSR_DMW
, MAT
, 4, 2)
190 FIELD(CSR_DMW
, VSEG
, 60, 4)
192 #define dmw_va2pa(va) \
193 (va & MAKE_64BIT_MASK(0, TARGET_VIRT_ADDR_SPACE_BITS))
196 #define LOONGARCH_CSR_DBG 0x500 /* debug config */
197 FIELD(CSR_DBG
, DST
, 0, 1)
198 FIELD(CSR_DBG
, DREV
, 1, 7)
199 FIELD(CSR_DBG
, DEI
, 8, 1)
200 FIELD(CSR_DBG
, DCL
, 9, 1)
201 FIELD(CSR_DBG
, DFW
, 10, 1)
202 FIELD(CSR_DBG
, DMW
, 11, 1)
203 FIELD(CSR_DBG
, ECODE
, 16, 6)
205 #define LOONGARCH_CSR_DERA 0x501 /* Debug era */
206 #define LOONGARCH_CSR_DSAVE 0x502 /* Debug save */
208 #endif /* LOONGARCH_CPU_CSR_H */