1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2015 Regents of the University of California
*/
#ifndef _ASM_RISCV_CSR_H
#define _ASM_RISCV_CSR_H
#include <asm/asm.h>
#include <linux/bits.h>
/* Status register flags */
#define SR_SIE _AC(0x00000002, UL) /* Supervisor Interrupt Enable */
#define SR_MIE _AC(0x00000008, UL) /* Machine Interrupt Enable */
#define SR_SPIE _AC(0x00000020, UL) /* Previous Supervisor IE */
#define SR_MPIE _AC(0x00000080, UL) /* Previous Machine IE */
#define SR_SPP _AC(0x00000100, UL) /* Previously Supervisor */
#define SR_MPP _AC(0x00001800, UL) /* Previously Machine */
#define SR_SUM _AC(0x00040000, UL) /* Supervisor User Memory Access */
#define SR_FS _AC(0x00006000, UL) /* Floating-point Status */
#define SR_FS_OFF _AC(0x00000000, UL)
#define SR_FS_INITIAL _AC(0x00002000, UL)
#define SR_FS_CLEAN _AC(0x00004000, UL)
#define SR_FS_DIRTY _AC(0x00006000, UL)
#define SR_XS _AC(0x00018000, UL) /* Extension Status */
#define SR_XS_OFF _AC(0x00000000, UL)
#define SR_XS_INITIAL _AC(0x00008000, UL)
#define SR_XS_CLEAN _AC(0x00010000, UL)
#define SR_XS_DIRTY _AC(0x00018000, UL)
#ifndef CONFIG_64BIT
#define SR_SD _AC(0x80000000, UL) /* FS/XS dirty */
#else
#define SR_SD _AC(0x8000000000000000, UL) /* FS/XS dirty */
#endif
#ifdef CONFIG_64BIT
#define SR_UXL _AC(0x300000000, UL) /* XLEN mask for U-mode */
#define SR_UXL_32 _AC(0x100000000, UL) /* XLEN = 32 for U-mode */
#define SR_UXL_64 _AC(0x200000000, UL) /* XLEN = 64 for U-mode */
#endif
/* SATP flags */
#ifndef CONFIG_64BIT
#define SATP_PPN _AC(0x003FFFFF, UL)
#define SATP_MODE_32 _AC(0x80000000, UL)
#define SATP_ASID_BITS 9
#define SATP_ASID_SHIFT 22
#define SATP_ASID_MASK _AC(0x1FF, UL)
#else
#define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
#define SATP_MODE_39 _AC(0x8000000000000000, UL)
#define SATP_MODE_48 _AC(0x9000000000000000, UL)
#define SATP_MODE_57 _AC(0xa000000000000000, UL)
#define SATP_ASID_BITS 16
#define SATP_ASID_SHIFT 44
#define SATP_ASID_MASK _AC(0xFFFF, UL)
#endif
/* Exception cause high bit - is an interrupt if set */
#define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
/* Interrupt causes (minus the high bit) */
#define IRQ_S_SOFT 1
#define IRQ_VS_SOFT 2
#define IRQ_M_SOFT 3
#define IRQ_S_TIMER 5
#define IRQ_VS_TIMER 6
#define IRQ_M_TIMER 7
#define IRQ_S_EXT 9
#define IRQ_VS_EXT 10
#define IRQ_M_EXT 11
#define IRQ_S_GEXT 12
#define IRQ_PMU_OVF 13
#define IRQ_LOCAL_MAX (IRQ_PMU_OVF + 1)
#define IRQ_LOCAL_MASK GENMASK((IRQ_LOCAL_MAX - 1), 0)
/* Exception causes */
#define EXC_INST_MISALIGNED 0
#define EXC_INST_ACCESS 1
#define EXC_INST_ILLEGAL 2
#define EXC_BREAKPOINT 3
#define EXC_LOAD_ACCESS 5
#define EXC_STORE_ACCESS 7
#define EXC_SYSCALL 8
#define EXC_HYPERVISOR_SYSCALL 9
#define EXC_SUPERVISOR_SYSCALL 10
#define EXC_INST_PAGE_FAULT 12
#define EXC_LOAD_PAGE_FAULT 13
#define EXC_STORE_PAGE_FAULT 15
#define EXC_INST_GUEST_PAGE_FAULT 20
#define EXC_LOAD_GUEST_PAGE_FAULT 21
#define EXC_VIRTUAL_INST_FAULT 22
#define EXC_STORE_GUEST_PAGE_FAULT 23
/* PMP configuration */
#define PMP_R 0x01
#define PMP_W 0x02
#define PMP_X 0x04
#define PMP_A 0x18
#define PMP_A_TOR 0x08
#define PMP_A_NA4 0x10
#define PMP_A_NAPOT 0x18
#define PMP_L 0x80
/* HSTATUS flags */
#ifdef CONFIG_64BIT
#define HSTATUS_VSXL _AC(0x300000000, UL)
#define HSTATUS_VSXL_SHIFT 32
#endif
#define HSTATUS_VTSR _AC(0x00400000, UL)
#define HSTATUS_VTW _AC(0x00200000, UL)
#define HSTATUS_VTVM _AC(0x00100000, UL)
#define HSTATUS_VGEIN _AC(0x0003f000, UL)
#define HSTATUS_VGEIN_SHIFT 12
#define HSTATUS_HU _AC(0x00000200, UL)
#define HSTATUS_SPVP _AC(0x00000100, UL)
#define HSTATUS_SPV _AC(0x00000080, UL)
#define HSTATUS_GVA _AC(0x00000040, UL)
#define HSTATUS_VSBE _AC(0x00000020, UL)
/* HGATP flags */
#define HGATP_MODE_OFF _AC(0, UL)
#define HGATP_MODE_SV32X4 _AC(1, UL)
#define HGATP_MODE_SV39X4 _AC(8, UL)
#define HGATP_MODE_SV48X4 _AC(9, UL)
#define HGATP_MODE_SV57X4 _AC(10, UL)
#define HGATP32_MODE_SHIFT 31
#define HGATP32_VMID_SHIFT 22
#define HGATP32_VMID GENMASK(28, 22)
#define HGATP32_PPN GENMASK(21, 0)
#define HGATP64_MODE_SHIFT 60
#define HGATP64_VMID_SHIFT 44
#define HGATP64_VMID GENMASK(57, 44)
#define HGATP64_PPN GENMASK(43, 0)
#define HGATP_PAGE_SHIFT 12
#ifdef CONFIG_64BIT
#define HGATP_PPN HGATP64_PPN
#define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT
#define HGATP_VMID HGATP64_VMID
#define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT
#else
#define HGATP_PPN HGATP32_PPN
#define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT
#define HGATP_VMID HGATP32_VMID
#define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT
#endif
/* VSIP & HVIP relation */
#define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT)
#define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \
(_AC(1, UL) << IRQ_S_TIMER) | \
(_AC(1, UL) << IRQ_S_EXT))
/* AIA CSR bits */
#define TOPI_IID_SHIFT 16
#define TOPI_IID_MASK GENMASK(11, 0)
#define TOPI_IPRIO_MASK GENMASK(7, 0)
#define TOPI_IPRIO_BITS 8
#define TOPEI_ID_SHIFT 16
#define TOPEI_ID_MASK GENMASK(10, 0)
#define TOPEI_PRIO_MASK GENMASK(10, 0)
#define ISELECT_IPRIO0 0x30
#define ISELECT_IPRIO15 0x3f
#define ISELECT_MASK GENMASK(8, 0)
#define HVICTL_VTI BIT(30)
#define HVICTL_IID GENMASK(27, 16)
#define HVICTL_IID_SHIFT 16
#define HVICTL_DPR BIT(9)
#define HVICTL_IPRIOM BIT(8)
#define HVICTL_IPRIO GENMASK(7, 0)
/* xENVCFG flags */
#define ENVCFG_STCE (_AC(1, ULL) << 63)
#define ENVCFG_PBMTE (_AC(1, ULL) << 62)
#define ENVCFG_CBZE (_AC(1, UL) << 7)
#define ENVCFG_CBCFE (_AC(1, UL) << 6)
#define ENVCFG_CBIE_SHIFT 4
#define ENVCFG_CBIE (_AC(0x3, UL) << ENVCFG_CBIE_SHIFT)
#define ENVCFG_CBIE_ILL _AC(0x0, UL)
#define ENVCFG_CBIE_FLUSH _AC(0x1, UL)
#define ENVCFG_CBIE_INV _AC(0x3, UL)
#define ENVCFG_FIOM _AC(0x1, UL)
/* symbolic CSR names: */
#define CSR_CYCLE 0xc00
#define CSR_TIME 0xc01
#define CSR_INSTRET 0xc02
#define CSR_HPMCOUNTER3 0xc03
#define CSR_HPMCOUNTER4 0xc04
#define CSR_HPMCOUNTER5 0xc05
#define CSR_HPMCOUNTER6 0xc06
#define CSR_HPMCOUNTER7 0xc07
#define CSR_HPMCOUNTER8 0xc08
#define CSR_HPMCOUNTER9 0xc09
#define CSR_HPMCOUNTER10 0xc0a
#define CSR_HPMCOUNTER11 0xc0b
#define CSR_HPMCOUNTER12 0xc0c
#define CSR_HPMCOUNTER13 0xc0d
#define CSR_HPMCOUNTER14 0xc0e
#define CSR_HPMCOUNTER15 0xc0f
#define CSR_HPMCOUNTER16 0xc10
#define CSR_HPMCOUNTER17 0xc11
#define CSR_HPMCOUNTER18 0xc12
#define CSR_HPMCOUNTER19 0xc13
#define CSR_HPMCOUNTER20 0xc14
#define CSR_HPMCOUNTER21 0xc15
#define CSR_HPMCOUNTER22 0xc16
#define CSR_HPMCOUNTER23 0xc17
#define CSR_HPMCOUNTER24 0xc18
#define CSR_HPMCOUNTER25 0xc19
#define CSR_HPMCOUNTER26 0xc1a
#define CSR_HPMCOUNTER27 0xc1b
#define CSR_HPMCOUNTER28 0xc1c
#define CSR_HPMCOUNTER29 0xc1d
#define CSR_HPMCOUNTER30 0xc1e
#define CSR_HPMCOUNTER31 0xc1f
#define CSR_CYCLEH 0xc80
#define CSR_TIMEH 0xc81
#define CSR_INSTRETH 0xc82
#define CSR_HPMCOUNTER3H 0xc83
#define CSR_HPMCOUNTER4H 0xc84
#define CSR_HPMCOUNTER5H 0xc85
#define CSR_HPMCOUNTER6H 0xc86
#define CSR_HPMCOUNTER7H 0xc87
#define CSR_HPMCOUNTER8H 0xc88
#define CSR_HPMCOUNTER9H 0xc89
#define CSR_HPMCOUNTER10H 0xc8a
#define CSR_HPMCOUNTER11H 0xc8b
#define CSR_HPMCOUNTER12H 0xc8c
#define CSR_HPMCOUNTER13H 0xc8d
#define CSR_HPMCOUNTER14H 0xc8e
#define CSR_HPMCOUNTER15H 0xc8f
#define CSR_HPMCOUNTER16H 0xc90
#define CSR_HPMCOUNTER17H 0xc91
#define CSR_HPMCOUNTER18H 0xc92
#define CSR_HPMCOUNTER19H 0xc93
#define CSR_HPMCOUNTER20H 0xc94
#define CSR_HPMCOUNTER21H 0xc95
#define CSR_HPMCOUNTER22H 0xc96
#define CSR_HPMCOUNTER23H 0xc97
#define CSR_HPMCOUNTER24H 0xc98
#define CSR_HPMCOUNTER25H 0xc99
#define CSR_HPMCOUNTER26H 0xc9a
#define CSR_HPMCOUNTER27H 0xc9b
#define CSR_HPMCOUNTER28H 0xc9c
#define CSR_HPMCOUNTER29H 0xc9d
#define CSR_HPMCOUNTER30H 0xc9e
#define CSR_HPMCOUNTER31H 0xc9f
#define CSR_SSCOUNTOVF 0xda0
#define CSR_SSTATUS 0x100
#define CSR_SIE 0x104
#define CSR_STVEC 0x105
#define CSR_SCOUNTEREN 0x106
#define CSR_SSCRATCH 0x140
#define CSR_SEPC 0x141
#define CSR_SCAUSE 0x142
#define CSR_STVAL 0x143
#define CSR_SIP 0x144
#define CSR_SATP 0x180
#define CSR_STIMECMP 0x14D
#define CSR_STIMECMPH 0x15D
/* Supervisor-Level Window to Indirectly Accessed Registers (AIA) */
#define CSR_SISELECT 0x150
#define CSR_SIREG 0x151
/* Supervisor-Level Interrupts (AIA) */
#define CSR_STOPEI 0x15c
#define CSR_STOPI 0xdb0
/* Supervisor-Level High-Half CSRs (AIA) */
#define CSR_SIEH 0x114
#define CSR_SIPH 0x154
#define CSR_VSSTATUS 0x200
#define CSR_VSIE 0x204
#define CSR_VSTVEC 0x205
#define CSR_VSSCRATCH 0x240
#define CSR_VSEPC 0x241
#define CSR_VSCAUSE 0x242
#define CSR_VSTVAL 0x243
#define CSR_VSIP 0x244
#define CSR_VSATP 0x280
#define CSR_VSTIMECMP 0x24D
#define CSR_VSTIMECMPH 0x25D
#define CSR_HSTATUS 0x600
#define CSR_HEDELEG 0x602
#define CSR_HIDELEG 0x603
#define CSR_HIE 0x604
#define CSR_HTIMEDELTA 0x605
#define CSR_HCOUNTEREN 0x606
#define CSR_HGEIE 0x607
#define CSR_HENVCFG 0x60a
#define CSR_HTIMEDELTAH 0x615
#define CSR_HENVCFGH 0x61a
#define CSR_HTVAL 0x643
#define CSR_HIP 0x644
#define CSR_HVIP 0x645
#define CSR_HTINST 0x64a
#define CSR_HGATP 0x680
#define CSR_HGEIP 0xe12
/* Virtual Interrupts and Interrupt Priorities (H-extension with AIA) */
#define CSR_HVIEN 0x608
#define CSR_HVICTL 0x609
#define CSR_HVIPRIO1 0x646
#define CSR_HVIPRIO2 0x647
/* VS-Level Window to Indirectly Accessed Registers (H-extension with AIA) */
#define CSR_VSISELECT 0x250
#define CSR_VSIREG 0x251
/* VS-Level Interrupts (H-extension with AIA) */
#define CSR_VSTOPEI 0x25c
#define CSR_VSTOPI 0xeb0
/* Hypervisor and VS-Level High-Half CSRs (H-extension with AIA) */
#define CSR_HIDELEGH 0x613
#define CSR_HVIENH 0x618
#define CSR_HVIPH 0x655
#define CSR_HVIPRIO1H 0x656
#define CSR_HVIPRIO2H 0x657
#define CSR_VSIEH 0x214
#define CSR_VSIPH 0x254
#define CSR_MSTATUS 0x300
#define CSR_MISA 0x301
#define CSR_MIDELEG 0x303
#define CSR_MIE 0x304
#define CSR_MTVEC 0x305
#define CSR_MENVCFG 0x30a
#define CSR_MENVCFGH 0x31a
#define CSR_MSCRATCH 0x340
#define CSR_MEPC 0x341
#define CSR_MCAUSE 0x342
#define CSR_MTVAL 0x343
#define CSR_MIP 0x344
#define CSR_PMPCFG0 0x3a0
#define CSR_PMPADDR0 0x3b0
#define CSR_MVENDORID 0xf11
#define CSR_MARCHID 0xf12
#define CSR_MIMPID 0xf13
#define CSR_MHARTID 0xf14
/* Machine-Level Window to Indirectly Accessed Registers (AIA) */
#define CSR_MISELECT 0x350
#define CSR_MIREG 0x351
/* Machine-Level Interrupts (AIA) */
#define CSR_MTOPEI 0x35c
#define CSR_MTOPI 0xfb0
/* Virtual Interrupts for Supervisor Level (AIA) */
#define CSR_MVIEN 0x308
#define CSR_MVIP 0x309
/* Machine-Level High-Half CSRs (AIA) */
#define CSR_MIDELEGH 0x313
#define CSR_MIEH 0x314
#define CSR_MVIENH 0x318
#define CSR_MVIPH 0x319
#define CSR_MIPH 0x354
#ifdef CONFIG_RISCV_M_MODE
# define CSR_STATUS CSR_MSTATUS
# define CSR_IE CSR_MIE
# define CSR_TVEC CSR_MTVEC
# define CSR_SCRATCH CSR_MSCRATCH
# define CSR_EPC CSR_MEPC
# define CSR_CAUSE CSR_MCAUSE
# define CSR_TVAL CSR_MTVAL
# define CSR_IP CSR_MIP
# define CSR_IEH CSR_MIEH
# define CSR_ISELECT CSR_MISELECT
# define CSR_IREG CSR_MIREG
# define CSR_IPH CSR_MIPH
# define CSR_TOPEI CSR_MTOPEI
# define CSR_TOPI CSR_MTOPI
# define SR_IE SR_MIE
# define SR_PIE SR_MPIE
# define SR_PP SR_MPP
# define RV_IRQ_SOFT IRQ_M_SOFT
# define RV_IRQ_TIMER IRQ_M_TIMER
# define RV_IRQ_EXT IRQ_M_EXT
#else /* CONFIG_RISCV_M_MODE */
# define CSR_STATUS CSR_SSTATUS
# define CSR_IE CSR_SIE
# define CSR_TVEC CSR_STVEC
# define CSR_SCRATCH CSR_SSCRATCH
# define CSR_EPC CSR_SEPC
# define CSR_CAUSE CSR_SCAUSE
# define CSR_TVAL CSR_STVAL
# define CSR_IP CSR_SIP
# define CSR_IEH CSR_SIEH
# define CSR_ISELECT CSR_SISELECT
# define CSR_IREG CSR_SIREG
# define CSR_IPH CSR_SIPH
# define CSR_TOPEI CSR_STOPEI
# define CSR_TOPI CSR_STOPI
# define SR_IE SR_SIE
# define SR_PIE SR_SPIE
# define SR_PP SR_SPP
# define RV_IRQ_SOFT IRQ_S_SOFT
# define RV_IRQ_TIMER IRQ_S_TIMER
# define RV_IRQ_EXT IRQ_S_EXT
# define RV_IRQ_PMU IRQ_PMU_OVF
# define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF)
#endif /* !CONFIG_RISCV_M_MODE */
/* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */
#define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT)
#define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER)
#define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT)
#ifndef __ASSEMBLY__
#define csr_swap(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\
: "=r" (__v) : "rK" (__v) \
: "memory"); \
__v; \
})
#define csr_read(csr) \
({ \
register unsigned long __v; \
__asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \
: "=r" (__v) : \
: "memory"); \
__v; \
})
#define csr_write(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \
: : "rK" (__v) \
: "memory"); \
})
#define csr_read_set(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\
: "=r" (__v) : "rK" (__v) \
: "memory"); \
__v; \
})
#define csr_set(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \
: : "rK" (__v) \
: "memory"); \
})
#define csr_read_clear(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\
: "=r" (__v) : "rK" (__v) \
: "memory"); \
__v; \
})
#define csr_clear(csr, val) \
({ \
unsigned long __v = (unsigned long)(val); \
__asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \
: : "rK" (__v) \
: "memory"); \
})
#endif /* __ASSEMBLY__ */
#endif /* _ASM_RISCV_CSR_H */
|
