1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2015 Regents of the University of California
6 #ifndef _ASM_RISCV_CSR_H
7 #define _ASM_RISCV_CSR_H
10 #include <linux/const.h>
12 /* Status register flags */
13 #define SR_SIE _AC(0x00000002, UL) /* Supervisor Interrupt Enable */
14 #define SR_MIE _AC(0x00000008, UL) /* Machine Interrupt Enable */
15 #define SR_SPIE _AC(0x00000020, UL) /* Previous Supervisor IE */
16 #define SR_MPIE _AC(0x00000080, UL) /* Previous Machine IE */
17 #define SR_SPP _AC(0x00000100, UL) /* Previously Supervisor */
18 #define SR_MPP _AC(0x00001800, UL) /* Previously Machine */
19 #define SR_SUM _AC(0x00040000, UL) /* Supervisor User Memory Access */
21 #define SR_FS _AC(0x00006000, UL) /* Floating-point Status */
22 #define SR_FS_OFF _AC(0x00000000, UL)
23 #define SR_FS_INITIAL _AC(0x00002000, UL)
24 #define SR_FS_CLEAN _AC(0x00004000, UL)
25 #define SR_FS_DIRTY _AC(0x00006000, UL)
27 #define SR_XS _AC(0x00018000, UL) /* Extension Status */
28 #define SR_XS_OFF _AC(0x00000000, UL)
29 #define SR_XS_INITIAL _AC(0x00008000, UL)
30 #define SR_XS_CLEAN _AC(0x00010000, UL)
31 #define SR_XS_DIRTY _AC(0x00018000, UL)
34 #define SR_SD _AC(0x80000000, UL) /* FS/XS dirty */
36 #define SR_SD _AC(0x8000000000000000, UL) /* FS/XS dirty */
40 #define SR_UXL _AC(0x300000000, UL) /* XLEN mask for U-mode */
41 #define SR_UXL_32 _AC(0x100000000, UL) /* XLEN = 32 for U-mode */
42 #define SR_UXL_64 _AC(0x200000000, UL) /* XLEN = 64 for U-mode */
43 #define SR_UXL_SHIFT 32
48 #define SATP_PPN _AC(0x003FFFFF, UL)
49 #define SATP_MODE_32 _AC(0x80000000, UL)
50 #define SATP_ASID_BITS 9
51 #define SATP_ASID_SHIFT 22
52 #define SATP_ASID_MASK _AC(0x1FF, UL)
54 #define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
55 #define SATP_MODE_39 _AC(0x8000000000000000, UL)
56 #define SATP_MODE_48 _AC(0x9000000000000000, UL)
57 #define SATP_MODE_57 _AC(0xa000000000000000, UL)
58 #define SATP_ASID_BITS 16
59 #define SATP_ASID_SHIFT 44
60 #define SATP_ASID_MASK _AC(0xFFFF, UL)
63 /* Exception cause high bit - is an interrupt if set */
64 #define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
66 /* Interrupt causes (minus the high bit) */
71 #define IRQ_VS_TIMER 6
76 #define IRQ_PMU_OVF 13
78 /* Exception causes */
79 #define EXC_INST_MISALIGNED 0
80 #define EXC_INST_ACCESS 1
81 #define EXC_INST_ILLEGAL 2
82 #define EXC_BREAKPOINT 3
83 #define EXC_LOAD_ACCESS 5
84 #define EXC_STORE_ACCESS 7
86 #define EXC_HYPERVISOR_SYSCALL 9
87 #define EXC_SUPERVISOR_SYSCALL 10
88 #define EXC_INST_PAGE_FAULT 12
89 #define EXC_LOAD_PAGE_FAULT 13
90 #define EXC_STORE_PAGE_FAULT 15
91 #define EXC_INST_GUEST_PAGE_FAULT 20
92 #define EXC_LOAD_GUEST_PAGE_FAULT 21
93 #define EXC_VIRTUAL_INST_FAULT 22
94 #define EXC_STORE_GUEST_PAGE_FAULT 23
96 /* PMP configuration */
101 #define PMP_A_TOR 0x08
102 #define PMP_A_NA4 0x10
103 #define PMP_A_NAPOT 0x18
108 #define HSTATUS_VSXL _AC(0x300000000, UL)
109 #define HSTATUS_VSXL_SHIFT 32
111 #define HSTATUS_VTSR _AC(0x00400000, UL)
112 #define HSTATUS_VTW _AC(0x00200000, UL)
113 #define HSTATUS_VTVM _AC(0x00100000, UL)
114 #define HSTATUS_VGEIN _AC(0x0003f000, UL)
115 #define HSTATUS_VGEIN_SHIFT 12
116 #define HSTATUS_HU _AC(0x00000200, UL)
117 #define HSTATUS_SPVP _AC(0x00000100, UL)
118 #define HSTATUS_SPV _AC(0x00000080, UL)
119 #define HSTATUS_GVA _AC(0x00000040, UL)
120 #define HSTATUS_VSBE _AC(0x00000020, UL)
123 #define HGATP_MODE_OFF _AC(0, UL)
124 #define HGATP_MODE_SV32X4 _AC(1, UL)
125 #define HGATP_MODE_SV39X4 _AC(8, UL)
126 #define HGATP_MODE_SV48X4 _AC(9, UL)
127 #define HGATP_MODE_SV57X4 _AC(10, UL)
129 #define HGATP32_MODE_SHIFT 31
130 #define HGATP32_VMID_SHIFT 22
131 #define HGATP32_VMID_MASK _AC(0x1FC00000, UL)
132 #define HGATP32_PPN _AC(0x003FFFFF, UL)
134 #define HGATP64_MODE_SHIFT 60
135 #define HGATP64_VMID_SHIFT 44
136 #define HGATP64_VMID_MASK _AC(0x03FFF00000000000, UL)
137 #define HGATP64_PPN _AC(0x00000FFFFFFFFFFF, UL)
139 #define HGATP_PAGE_SHIFT 12
142 #define HGATP_PPN HGATP64_PPN
143 #define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT
144 #define HGATP_VMID_MASK HGATP64_VMID_MASK
145 #define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT
147 #define HGATP_PPN HGATP32_PPN
148 #define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT
149 #define HGATP_VMID_MASK HGATP32_VMID_MASK
150 #define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT
153 /* VSIP & HVIP relation */
154 #define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT)
155 #define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \
156 (_AC(1, UL) << IRQ_S_TIMER) | \
157 (_AC(1, UL) << IRQ_S_EXT))
159 /* symbolic CSR names: */
160 #define CSR_CYCLE 0xc00
161 #define CSR_TIME 0xc01
162 #define CSR_INSTRET 0xc02
163 #define CSR_HPMCOUNTER3 0xc03
164 #define CSR_HPMCOUNTER4 0xc04
165 #define CSR_HPMCOUNTER5 0xc05
166 #define CSR_HPMCOUNTER6 0xc06
167 #define CSR_HPMCOUNTER7 0xc07
168 #define CSR_HPMCOUNTER8 0xc08
169 #define CSR_HPMCOUNTER9 0xc09
170 #define CSR_HPMCOUNTER10 0xc0a
171 #define CSR_HPMCOUNTER11 0xc0b
172 #define CSR_HPMCOUNTER12 0xc0c
173 #define CSR_HPMCOUNTER13 0xc0d
174 #define CSR_HPMCOUNTER14 0xc0e
175 #define CSR_HPMCOUNTER15 0xc0f
176 #define CSR_HPMCOUNTER16 0xc10
177 #define CSR_HPMCOUNTER17 0xc11
178 #define CSR_HPMCOUNTER18 0xc12
179 #define CSR_HPMCOUNTER19 0xc13
180 #define CSR_HPMCOUNTER20 0xc14
181 #define CSR_HPMCOUNTER21 0xc15
182 #define CSR_HPMCOUNTER22 0xc16
183 #define CSR_HPMCOUNTER23 0xc17
184 #define CSR_HPMCOUNTER24 0xc18
185 #define CSR_HPMCOUNTER25 0xc19
186 #define CSR_HPMCOUNTER26 0xc1a
187 #define CSR_HPMCOUNTER27 0xc1b
188 #define CSR_HPMCOUNTER28 0xc1c
189 #define CSR_HPMCOUNTER29 0xc1d
190 #define CSR_HPMCOUNTER30 0xc1e
191 #define CSR_HPMCOUNTER31 0xc1f
192 #define CSR_CYCLEH 0xc80
193 #define CSR_TIMEH 0xc81
194 #define CSR_INSTRETH 0xc82
195 #define CSR_HPMCOUNTER3H 0xc83
196 #define CSR_HPMCOUNTER4H 0xc84
197 #define CSR_HPMCOUNTER5H 0xc85
198 #define CSR_HPMCOUNTER6H 0xc86
199 #define CSR_HPMCOUNTER7H 0xc87
200 #define CSR_HPMCOUNTER8H 0xc88
201 #define CSR_HPMCOUNTER9H 0xc89
202 #define CSR_HPMCOUNTER10H 0xc8a
203 #define CSR_HPMCOUNTER11H 0xc8b
204 #define CSR_HPMCOUNTER12H 0xc8c
205 #define CSR_HPMCOUNTER13H 0xc8d
206 #define CSR_HPMCOUNTER14H 0xc8e
207 #define CSR_HPMCOUNTER15H 0xc8f
208 #define CSR_HPMCOUNTER16H 0xc90
209 #define CSR_HPMCOUNTER17H 0xc91
210 #define CSR_HPMCOUNTER18H 0xc92
211 #define CSR_HPMCOUNTER19H 0xc93
212 #define CSR_HPMCOUNTER20H 0xc94
213 #define CSR_HPMCOUNTER21H 0xc95
214 #define CSR_HPMCOUNTER22H 0xc96
215 #define CSR_HPMCOUNTER23H 0xc97
216 #define CSR_HPMCOUNTER24H 0xc98
217 #define CSR_HPMCOUNTER25H 0xc99
218 #define CSR_HPMCOUNTER26H 0xc9a
219 #define CSR_HPMCOUNTER27H 0xc9b
220 #define CSR_HPMCOUNTER28H 0xc9c
221 #define CSR_HPMCOUNTER29H 0xc9d
222 #define CSR_HPMCOUNTER30H 0xc9e
223 #define CSR_HPMCOUNTER31H 0xc9f
225 #define CSR_SSCOUNTOVF 0xda0
227 #define CSR_SSTATUS 0x100
228 #define CSR_SIE 0x104
229 #define CSR_STVEC 0x105
230 #define CSR_SCOUNTEREN 0x106
231 #define CSR_SSCRATCH 0x140
232 #define CSR_SEPC 0x141
233 #define CSR_SCAUSE 0x142
234 #define CSR_STVAL 0x143
235 #define CSR_SIP 0x144
236 #define CSR_SATP 0x180
238 #define CSR_VSSTATUS 0x200
239 #define CSR_VSIE 0x204
240 #define CSR_VSTVEC 0x205
241 #define CSR_VSSCRATCH 0x240
242 #define CSR_VSEPC 0x241
243 #define CSR_VSCAUSE 0x242
244 #define CSR_VSTVAL 0x243
245 #define CSR_VSIP 0x244
246 #define CSR_VSATP 0x280
248 #define CSR_HSTATUS 0x600
249 #define CSR_HEDELEG 0x602
250 #define CSR_HIDELEG 0x603
251 #define CSR_HIE 0x604
252 #define CSR_HTIMEDELTA 0x605
253 #define CSR_HCOUNTEREN 0x606
254 #define CSR_HGEIE 0x607
255 #define CSR_HTIMEDELTAH 0x615
256 #define CSR_HTVAL 0x643
257 #define CSR_HIP 0x644
258 #define CSR_HVIP 0x645
259 #define CSR_HTINST 0x64a
260 #define CSR_HGATP 0x680
261 #define CSR_HGEIP 0xe12
263 #define CSR_MSTATUS 0x300
264 #define CSR_MISA 0x301
265 #define CSR_MIE 0x304
266 #define CSR_MTVEC 0x305
267 #define CSR_MSCRATCH 0x340
268 #define CSR_MEPC 0x341
269 #define CSR_MCAUSE 0x342
270 #define CSR_MTVAL 0x343
271 #define CSR_MIP 0x344
272 #define CSR_PMPCFG0 0x3a0
273 #define CSR_PMPADDR0 0x3b0
274 #define CSR_MVENDORID 0xf11
275 #define CSR_MARCHID 0xf12
276 #define CSR_MIMPID 0xf13
277 #define CSR_MHARTID 0xf14
279 #ifdef CONFIG_RISCV_M_MODE
280 # define CSR_STATUS CSR_MSTATUS
281 # define CSR_IE CSR_MIE
282 # define CSR_TVEC CSR_MTVEC
283 # define CSR_SCRATCH CSR_MSCRATCH
284 # define CSR_EPC CSR_MEPC
285 # define CSR_CAUSE CSR_MCAUSE
286 # define CSR_TVAL CSR_MTVAL
287 # define CSR_IP CSR_MIP
289 # define SR_IE SR_MIE
290 # define SR_PIE SR_MPIE
291 # define SR_PP SR_MPP
293 # define RV_IRQ_SOFT IRQ_M_SOFT
294 # define RV_IRQ_TIMER IRQ_M_TIMER
295 # define RV_IRQ_EXT IRQ_M_EXT
296 #else /* CONFIG_RISCV_M_MODE */
297 # define CSR_STATUS CSR_SSTATUS
298 # define CSR_IE CSR_SIE
299 # define CSR_TVEC CSR_STVEC
300 # define CSR_SCRATCH CSR_SSCRATCH
301 # define CSR_EPC CSR_SEPC
302 # define CSR_CAUSE CSR_SCAUSE
303 # define CSR_TVAL CSR_STVAL
304 # define CSR_IP CSR_SIP
306 # define SR_IE SR_SIE
307 # define SR_PIE SR_SPIE
308 # define SR_PP SR_SPP
310 # define RV_IRQ_SOFT IRQ_S_SOFT
311 # define RV_IRQ_TIMER IRQ_S_TIMER
312 # define RV_IRQ_EXT IRQ_S_EXT
313 # define RV_IRQ_PMU IRQ_PMU_OVF
314 # define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF)
316 #endif /* !CONFIG_RISCV_M_MODE */
318 /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */
319 #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT)
320 #define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER)
321 #define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT)
325 #define csr_swap(csr, val) \
327 unsigned long __v = (unsigned long)(val); \
328 __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\
329 : "=r" (__v) : "rK" (__v) \
334 #define csr_read(csr) \
336 register unsigned long __v; \
337 __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \
343 #define csr_write(csr, val) \
345 unsigned long __v = (unsigned long)(val); \
346 __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \
351 #define csr_read_set(csr, val) \
353 unsigned long __v = (unsigned long)(val); \
354 __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\
355 : "=r" (__v) : "rK" (__v) \
360 #define csr_set(csr, val) \
362 unsigned long __v = (unsigned long)(val); \
363 __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \
368 #define csr_read_clear(csr, val) \
370 unsigned long __v = (unsigned long)(val); \
371 __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\
372 : "=r" (__v) : "rK" (__v) \
377 #define csr_clear(csr, val) \
379 unsigned long __v = (unsigned long)(val); \
380 __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \
385 #endif /* __ASSEMBLY__ */
387 #endif /* _ASM_RISCV_CSR_H */