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/bits.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_VS _AC(0x00000600, UL) /* Vector Status */
28 #define SR_VS_OFF _AC(0x00000000, UL)
29 #define SR_VS_INITIAL _AC(0x00000200, UL)
30 #define SR_VS_CLEAN _AC(0x00000400, UL)
31 #define SR_VS_DIRTY _AC(0x00000600, UL)
33 #define SR_XS _AC(0x00018000, UL) /* Extension Status */
34 #define SR_XS_OFF _AC(0x00000000, UL)
35 #define SR_XS_INITIAL _AC(0x00008000, UL)
36 #define SR_XS_CLEAN _AC(0x00010000, UL)
37 #define SR_XS_DIRTY _AC(0x00018000, UL)
39 #define SR_FS_VS (SR_FS | SR_VS) /* Vector and Floating-Point Unit */
42 #define SR_SD _AC(0x80000000, UL) /* FS/VS/XS dirty */
44 #define SR_SD _AC(0x8000000000000000, UL) /* FS/VS/XS dirty */
48 #define SR_UXL _AC(0x300000000, UL) /* XLEN mask for U-mode */
49 #define SR_UXL_32 _AC(0x100000000, UL) /* XLEN = 32 for U-mode */
50 #define SR_UXL_64 _AC(0x200000000, UL) /* XLEN = 64 for U-mode */
55 #define SATP_PPN _AC(0x003FFFFF, UL)
56 #define SATP_MODE_32 _AC(0x80000000, UL)
57 #define SATP_MODE_SHIFT 31
58 #define SATP_ASID_BITS 9
59 #define SATP_ASID_SHIFT 22
60 #define SATP_ASID_MASK _AC(0x1FF, UL)
62 #define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
63 #define SATP_MODE_39 _AC(0x8000000000000000, UL)
64 #define SATP_MODE_48 _AC(0x9000000000000000, UL)
65 #define SATP_MODE_57 _AC(0xa000000000000000, UL)
66 #define SATP_MODE_SHIFT 60
67 #define SATP_ASID_BITS 16
68 #define SATP_ASID_SHIFT 44
69 #define SATP_ASID_MASK _AC(0xFFFF, UL)
72 /* Exception cause high bit - is an interrupt if set */
73 #define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
75 /* Interrupt causes (minus the high bit) */
80 #define IRQ_VS_TIMER 6
86 #define IRQ_PMU_OVF 13
87 #define IRQ_LOCAL_MAX (IRQ_PMU_OVF + 1)
88 #define IRQ_LOCAL_MASK GENMASK((IRQ_LOCAL_MAX - 1), 0)
90 /* Exception causes */
91 #define EXC_INST_MISALIGNED 0
92 #define EXC_INST_ACCESS 1
93 #define EXC_INST_ILLEGAL 2
94 #define EXC_BREAKPOINT 3
95 #define EXC_LOAD_MISALIGNED 4
96 #define EXC_LOAD_ACCESS 5
97 #define EXC_STORE_MISALIGNED 6
98 #define EXC_STORE_ACCESS 7
100 #define EXC_HYPERVISOR_SYSCALL 9
101 #define EXC_SUPERVISOR_SYSCALL 10
102 #define EXC_INST_PAGE_FAULT 12
103 #define EXC_LOAD_PAGE_FAULT 13
104 #define EXC_STORE_PAGE_FAULT 15
105 #define EXC_INST_GUEST_PAGE_FAULT 20
106 #define EXC_LOAD_GUEST_PAGE_FAULT 21
107 #define EXC_VIRTUAL_INST_FAULT 22
108 #define EXC_STORE_GUEST_PAGE_FAULT 23
110 /* PMP configuration */
115 #define PMP_A_TOR 0x08
116 #define PMP_A_NA4 0x10
117 #define PMP_A_NAPOT 0x18
122 #define HSTATUS_VSXL _AC(0x300000000, UL)
123 #define HSTATUS_VSXL_SHIFT 32
125 #define HSTATUS_VTSR _AC(0x00400000, UL)
126 #define HSTATUS_VTW _AC(0x00200000, UL)
127 #define HSTATUS_VTVM _AC(0x00100000, UL)
128 #define HSTATUS_VGEIN _AC(0x0003f000, UL)
129 #define HSTATUS_VGEIN_SHIFT 12
130 #define HSTATUS_HU _AC(0x00000200, UL)
131 #define HSTATUS_SPVP _AC(0x00000100, UL)
132 #define HSTATUS_SPV _AC(0x00000080, UL)
133 #define HSTATUS_GVA _AC(0x00000040, UL)
134 #define HSTATUS_VSBE _AC(0x00000020, UL)
137 #define HGATP_MODE_OFF _AC(0, UL)
138 #define HGATP_MODE_SV32X4 _AC(1, UL)
139 #define HGATP_MODE_SV39X4 _AC(8, UL)
140 #define HGATP_MODE_SV48X4 _AC(9, UL)
141 #define HGATP_MODE_SV57X4 _AC(10, UL)
143 #define HGATP32_MODE_SHIFT 31
144 #define HGATP32_VMID_SHIFT 22
145 #define HGATP32_VMID GENMASK(28, 22)
146 #define HGATP32_PPN GENMASK(21, 0)
148 #define HGATP64_MODE_SHIFT 60
149 #define HGATP64_VMID_SHIFT 44
150 #define HGATP64_VMID GENMASK(57, 44)
151 #define HGATP64_PPN GENMASK(43, 0)
153 #define HGATP_PAGE_SHIFT 12
156 #define HGATP_PPN HGATP64_PPN
157 #define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT
158 #define HGATP_VMID HGATP64_VMID
159 #define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT
161 #define HGATP_PPN HGATP32_PPN
162 #define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT
163 #define HGATP_VMID HGATP32_VMID
164 #define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT
167 /* VSIP & HVIP relation */
168 #define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT)
169 #define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \
170 (_AC(1, UL) << IRQ_S_TIMER) | \
171 (_AC(1, UL) << IRQ_S_EXT))
174 #define TOPI_IID_SHIFT 16
175 #define TOPI_IID_MASK GENMASK(11, 0)
176 #define TOPI_IPRIO_MASK GENMASK(7, 0)
177 #define TOPI_IPRIO_BITS 8
179 #define TOPEI_ID_SHIFT 16
180 #define TOPEI_ID_MASK GENMASK(10, 0)
181 #define TOPEI_PRIO_MASK GENMASK(10, 0)
183 #define ISELECT_IPRIO0 0x30
184 #define ISELECT_IPRIO15 0x3f
185 #define ISELECT_MASK GENMASK(8, 0)
187 #define HVICTL_VTI BIT(30)
188 #define HVICTL_IID GENMASK(27, 16)
189 #define HVICTL_IID_SHIFT 16
190 #define HVICTL_DPR BIT(9)
191 #define HVICTL_IPRIOM BIT(8)
192 #define HVICTL_IPRIO GENMASK(7, 0)
195 #define ENVCFG_STCE (_AC(1, ULL) << 63)
196 #define ENVCFG_PBMTE (_AC(1, ULL) << 62)
197 #define ENVCFG_CBZE (_AC(1, UL) << 7)
198 #define ENVCFG_CBCFE (_AC(1, UL) << 6)
199 #define ENVCFG_CBIE_SHIFT 4
200 #define ENVCFG_CBIE (_AC(0x3, UL) << ENVCFG_CBIE_SHIFT)
201 #define ENVCFG_CBIE_ILL _AC(0x0, UL)
202 #define ENVCFG_CBIE_FLUSH _AC(0x1, UL)
203 #define ENVCFG_CBIE_INV _AC(0x3, UL)
204 #define ENVCFG_FIOM _AC(0x1, UL)
206 /* symbolic CSR names: */
207 #define CSR_CYCLE 0xc00
208 #define CSR_TIME 0xc01
209 #define CSR_INSTRET 0xc02
210 #define CSR_HPMCOUNTER3 0xc03
211 #define CSR_HPMCOUNTER4 0xc04
212 #define CSR_HPMCOUNTER5 0xc05
213 #define CSR_HPMCOUNTER6 0xc06
214 #define CSR_HPMCOUNTER7 0xc07
215 #define CSR_HPMCOUNTER8 0xc08
216 #define CSR_HPMCOUNTER9 0xc09
217 #define CSR_HPMCOUNTER10 0xc0a
218 #define CSR_HPMCOUNTER11 0xc0b
219 #define CSR_HPMCOUNTER12 0xc0c
220 #define CSR_HPMCOUNTER13 0xc0d
221 #define CSR_HPMCOUNTER14 0xc0e
222 #define CSR_HPMCOUNTER15 0xc0f
223 #define CSR_HPMCOUNTER16 0xc10
224 #define CSR_HPMCOUNTER17 0xc11
225 #define CSR_HPMCOUNTER18 0xc12
226 #define CSR_HPMCOUNTER19 0xc13
227 #define CSR_HPMCOUNTER20 0xc14
228 #define CSR_HPMCOUNTER21 0xc15
229 #define CSR_HPMCOUNTER22 0xc16
230 #define CSR_HPMCOUNTER23 0xc17
231 #define CSR_HPMCOUNTER24 0xc18
232 #define CSR_HPMCOUNTER25 0xc19
233 #define CSR_HPMCOUNTER26 0xc1a
234 #define CSR_HPMCOUNTER27 0xc1b
235 #define CSR_HPMCOUNTER28 0xc1c
236 #define CSR_HPMCOUNTER29 0xc1d
237 #define CSR_HPMCOUNTER30 0xc1e
238 #define CSR_HPMCOUNTER31 0xc1f
239 #define CSR_CYCLEH 0xc80
240 #define CSR_TIMEH 0xc81
241 #define CSR_INSTRETH 0xc82
242 #define CSR_HPMCOUNTER3H 0xc83
243 #define CSR_HPMCOUNTER4H 0xc84
244 #define CSR_HPMCOUNTER5H 0xc85
245 #define CSR_HPMCOUNTER6H 0xc86
246 #define CSR_HPMCOUNTER7H 0xc87
247 #define CSR_HPMCOUNTER8H 0xc88
248 #define CSR_HPMCOUNTER9H 0xc89
249 #define CSR_HPMCOUNTER10H 0xc8a
250 #define CSR_HPMCOUNTER11H 0xc8b
251 #define CSR_HPMCOUNTER12H 0xc8c
252 #define CSR_HPMCOUNTER13H 0xc8d
253 #define CSR_HPMCOUNTER14H 0xc8e
254 #define CSR_HPMCOUNTER15H 0xc8f
255 #define CSR_HPMCOUNTER16H 0xc90
256 #define CSR_HPMCOUNTER17H 0xc91
257 #define CSR_HPMCOUNTER18H 0xc92
258 #define CSR_HPMCOUNTER19H 0xc93
259 #define CSR_HPMCOUNTER20H 0xc94
260 #define CSR_HPMCOUNTER21H 0xc95
261 #define CSR_HPMCOUNTER22H 0xc96
262 #define CSR_HPMCOUNTER23H 0xc97
263 #define CSR_HPMCOUNTER24H 0xc98
264 #define CSR_HPMCOUNTER25H 0xc99
265 #define CSR_HPMCOUNTER26H 0xc9a
266 #define CSR_HPMCOUNTER27H 0xc9b
267 #define CSR_HPMCOUNTER28H 0xc9c
268 #define CSR_HPMCOUNTER29H 0xc9d
269 #define CSR_HPMCOUNTER30H 0xc9e
270 #define CSR_HPMCOUNTER31H 0xc9f
272 #define CSR_SSCOUNTOVF 0xda0
274 #define CSR_SSTATUS 0x100
275 #define CSR_SIE 0x104
276 #define CSR_STVEC 0x105
277 #define CSR_SCOUNTEREN 0x106
278 #define CSR_SSCRATCH 0x140
279 #define CSR_SEPC 0x141
280 #define CSR_SCAUSE 0x142
281 #define CSR_STVAL 0x143
282 #define CSR_SIP 0x144
283 #define CSR_SATP 0x180
285 #define CSR_STIMECMP 0x14D
286 #define CSR_STIMECMPH 0x15D
288 /* Supervisor-Level Window to Indirectly Accessed Registers (AIA) */
289 #define CSR_SISELECT 0x150
290 #define CSR_SIREG 0x151
292 /* Supervisor-Level Interrupts (AIA) */
293 #define CSR_STOPEI 0x15c
294 #define CSR_STOPI 0xdb0
296 /* Supervisor-Level High-Half CSRs (AIA) */
297 #define CSR_SIEH 0x114
298 #define CSR_SIPH 0x154
300 #define CSR_VSSTATUS 0x200
301 #define CSR_VSIE 0x204
302 #define CSR_VSTVEC 0x205
303 #define CSR_VSSCRATCH 0x240
304 #define CSR_VSEPC 0x241
305 #define CSR_VSCAUSE 0x242
306 #define CSR_VSTVAL 0x243
307 #define CSR_VSIP 0x244
308 #define CSR_VSATP 0x280
309 #define CSR_VSTIMECMP 0x24D
310 #define CSR_VSTIMECMPH 0x25D
312 #define CSR_HSTATUS 0x600
313 #define CSR_HEDELEG 0x602
314 #define CSR_HIDELEG 0x603
315 #define CSR_HIE 0x604
316 #define CSR_HTIMEDELTA 0x605
317 #define CSR_HCOUNTEREN 0x606
318 #define CSR_HGEIE 0x607
319 #define CSR_HENVCFG 0x60a
320 #define CSR_HTIMEDELTAH 0x615
321 #define CSR_HENVCFGH 0x61a
322 #define CSR_HTVAL 0x643
323 #define CSR_HIP 0x644
324 #define CSR_HVIP 0x645
325 #define CSR_HTINST 0x64a
326 #define CSR_HGATP 0x680
327 #define CSR_HGEIP 0xe12
329 /* Virtual Interrupts and Interrupt Priorities (H-extension with AIA) */
330 #define CSR_HVIEN 0x608
331 #define CSR_HVICTL 0x609
332 #define CSR_HVIPRIO1 0x646
333 #define CSR_HVIPRIO2 0x647
335 /* VS-Level Window to Indirectly Accessed Registers (H-extension with AIA) */
336 #define CSR_VSISELECT 0x250
337 #define CSR_VSIREG 0x251
339 /* VS-Level Interrupts (H-extension with AIA) */
340 #define CSR_VSTOPEI 0x25c
341 #define CSR_VSTOPI 0xeb0
343 /* Hypervisor and VS-Level High-Half CSRs (H-extension with AIA) */
344 #define CSR_HIDELEGH 0x613
345 #define CSR_HVIENH 0x618
346 #define CSR_HVIPH 0x655
347 #define CSR_HVIPRIO1H 0x656
348 #define CSR_HVIPRIO2H 0x657
349 #define CSR_VSIEH 0x214
350 #define CSR_VSIPH 0x254
352 #define CSR_MSTATUS 0x300
353 #define CSR_MISA 0x301
354 #define CSR_MIDELEG 0x303
355 #define CSR_MIE 0x304
356 #define CSR_MTVEC 0x305
357 #define CSR_MENVCFG 0x30a
358 #define CSR_MENVCFGH 0x31a
359 #define CSR_MSCRATCH 0x340
360 #define CSR_MEPC 0x341
361 #define CSR_MCAUSE 0x342
362 #define CSR_MTVAL 0x343
363 #define CSR_MIP 0x344
364 #define CSR_PMPCFG0 0x3a0
365 #define CSR_PMPADDR0 0x3b0
366 #define CSR_MVENDORID 0xf11
367 #define CSR_MARCHID 0xf12
368 #define CSR_MIMPID 0xf13
369 #define CSR_MHARTID 0xf14
371 /* Machine-Level Window to Indirectly Accessed Registers (AIA) */
372 #define CSR_MISELECT 0x350
373 #define CSR_MIREG 0x351
375 /* Machine-Level Interrupts (AIA) */
376 #define CSR_MTOPEI 0x35c
377 #define CSR_MTOPI 0xfb0
379 /* Virtual Interrupts for Supervisor Level (AIA) */
380 #define CSR_MVIEN 0x308
381 #define CSR_MVIP 0x309
383 /* Machine-Level High-Half CSRs (AIA) */
384 #define CSR_MIDELEGH 0x313
385 #define CSR_MIEH 0x314
386 #define CSR_MVIENH 0x318
387 #define CSR_MVIPH 0x319
388 #define CSR_MIPH 0x354
390 #define CSR_VSTART 0x8
393 #define CSR_VTYPE 0xc21
394 #define CSR_VLENB 0xc22
396 #ifdef CONFIG_RISCV_M_MODE
397 # define CSR_STATUS CSR_MSTATUS
398 # define CSR_IE CSR_MIE
399 # define CSR_TVEC CSR_MTVEC
400 # define CSR_SCRATCH CSR_MSCRATCH
401 # define CSR_EPC CSR_MEPC
402 # define CSR_CAUSE CSR_MCAUSE
403 # define CSR_TVAL CSR_MTVAL
404 # define CSR_IP CSR_MIP
406 # define CSR_IEH CSR_MIEH
407 # define CSR_ISELECT CSR_MISELECT
408 # define CSR_IREG CSR_MIREG
409 # define CSR_IPH CSR_MIPH
410 # define CSR_TOPEI CSR_MTOPEI
411 # define CSR_TOPI CSR_MTOPI
413 # define SR_IE SR_MIE
414 # define SR_PIE SR_MPIE
415 # define SR_PP SR_MPP
417 # define RV_IRQ_SOFT IRQ_M_SOFT
418 # define RV_IRQ_TIMER IRQ_M_TIMER
419 # define RV_IRQ_EXT IRQ_M_EXT
420 #else /* CONFIG_RISCV_M_MODE */
421 # define CSR_STATUS CSR_SSTATUS
422 # define CSR_IE CSR_SIE
423 # define CSR_TVEC CSR_STVEC
424 # define CSR_SCRATCH CSR_SSCRATCH
425 # define CSR_EPC CSR_SEPC
426 # define CSR_CAUSE CSR_SCAUSE
427 # define CSR_TVAL CSR_STVAL
428 # define CSR_IP CSR_SIP
430 # define CSR_IEH CSR_SIEH
431 # define CSR_ISELECT CSR_SISELECT
432 # define CSR_IREG CSR_SIREG
433 # define CSR_IPH CSR_SIPH
434 # define CSR_TOPEI CSR_STOPEI
435 # define CSR_TOPI CSR_STOPI
437 # define SR_IE SR_SIE
438 # define SR_PIE SR_SPIE
439 # define SR_PP SR_SPP
441 # define RV_IRQ_SOFT IRQ_S_SOFT
442 # define RV_IRQ_TIMER IRQ_S_TIMER
443 # define RV_IRQ_EXT IRQ_S_EXT
444 # define RV_IRQ_PMU IRQ_PMU_OVF
445 # define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF)
447 #endif /* !CONFIG_RISCV_M_MODE */
449 /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */
450 #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT)
451 #define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER)
452 #define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT)
456 #define csr_swap(csr, val) \
458 unsigned long __v = (unsigned long)(val); \
459 __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\
460 : "=r" (__v) : "rK" (__v) \
465 #define csr_read(csr) \
467 register unsigned long __v; \
468 __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \
474 #define csr_write(csr, val) \
476 unsigned long __v = (unsigned long)(val); \
477 __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \
482 #define csr_read_set(csr, val) \
484 unsigned long __v = (unsigned long)(val); \
485 __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\
486 : "=r" (__v) : "rK" (__v) \
491 #define csr_set(csr, val) \
493 unsigned long __v = (unsigned long)(val); \
494 __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \
499 #define csr_read_clear(csr, val) \
501 unsigned long __v = (unsigned long)(val); \
502 __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\
503 : "=r" (__v) : "rK" (__v) \
508 #define csr_clear(csr, val) \
510 unsigned long __v = (unsigned long)(val); \
511 __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \
516 #endif /* __ASSEMBLY__ */
518 #endif /* _ASM_RISCV_CSR_H */