arch/riscv/include/asm/csr.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2015 Regents of the University of California
   4  */
   5
   6 #ifndef _ASM_RISCV_CSR_H
   7 #define _ASM_RISCV_CSR_H
   8
   9 #include <asm/asm.h>
  10 #include <linux/const.h>
  11
  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 */
  20
  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)
  26
  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)
  32
  33 #ifndef CONFIG_64BIT
  34 #define SR_SD           _AC(0x80000000, UL) /* FS/XS dirty */
  35 #else
  36 #define SR_SD           _AC(0x8000000000000000, UL) /* FS/XS dirty */
  37 #endif
  38
  39 #ifdef CONFIG_64BIT
  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
  44 #endif
  45
  46 /* SATP flags */
  47 #ifndef CONFIG_64BIT
  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)
  53 #else
  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)
  61 #endif
  62
  63 /* Exception cause high bit - is an interrupt if set */
  64 #define CAUSE_IRQ_FLAG          (_AC(1, UL) << (__riscv_xlen - 1))
  65
  66 /* Interrupt causes (minus the high bit) */
  67 #define IRQ_S_SOFT              1
  68 #define IRQ_VS_SOFT             2
  69 #define IRQ_M_SOFT              3
  70 #define IRQ_S_TIMER             5
  71 #define IRQ_VS_TIMER            6
  72 #define IRQ_M_TIMER             7
  73 #define IRQ_S_EXT               9
  74 #define IRQ_VS_EXT              10
  75 #define IRQ_M_EXT               11
  76 #define IRQ_PMU_OVF             13
  77
  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
  85 #define EXC_SYSCALL             8
  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
  95
  96 /* PMP configuration */
  97 #define PMP_R                   0x01
  98 #define PMP_W                   0x02
  99 #define PMP_X                   0x04
 100 #define PMP_A                   0x18
 101 #define PMP_A_TOR               0x08
 102 #define PMP_A_NA4               0x10
 103 #define PMP_A_NAPOT             0x18
 104 #define PMP_L                   0x80
 105
 106 /* HSTATUS flags */
 107 #ifdef CONFIG_64BIT
 108 #define HSTATUS_VSXL            _AC(0x300000000, UL)
 109 #define HSTATUS_VSXL_SHIFT      32
 110 #endif
 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)
 121
 122 /* HGATP flags */
 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)
 128
 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)
 133
 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)
 138
 139 #define HGATP_PAGE_SHIFT        12
 140
 141 #ifdef CONFIG_64BIT
 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
 146 #else
 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
 151 #endif
 152
 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))
 158
 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
 224
 225 #define CSR_SSCOUNTOVF          0xda0
 226
 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
 237
 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
 247
 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
 262
 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
 278
 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
 288
 289 # define SR_IE          SR_MIE
 290 # define SR_PIE         SR_MPIE
 291 # define SR_PP          SR_MPP
 292
 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
 305
 306 # define SR_IE          SR_SIE
 307 # define SR_PIE         SR_SPIE
 308 # define SR_PP          SR_SPP
 309
 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)
 315
 316 #endif /* !CONFIG_RISCV_M_MODE */
 317
 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)
 322
 323 #ifndef __ASSEMBLY__
 324
 325 #define csr_swap(csr, val)                                      \
 326 ({                                                              \
 327         unsigned long __v = (unsigned long)(val);               \
 328         __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\
 329                               : "=r" (__v) : "rK" (__v)         \
 330                               : "memory");                      \
 331         __v;                                                    \
 332 })
 333
 334 #define csr_read(csr)                                           \
 335 ({                                                              \
 336         register unsigned long __v;                             \
 337         __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr)        \
 338                               : "=r" (__v) :                    \
 339                               : "memory");                      \
 340         __v;                                                    \
 341 })
 342
 343 #define csr_write(csr, val)                                     \
 344 ({                                                              \
 345         unsigned long __v = (unsigned long)(val);               \
 346         __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0"     \
 347                               : : "rK" (__v)                    \
 348                               : "memory");                      \
 349 })
 350
 351 #define csr_read_set(csr, val)                                  \
 352 ({                                                              \
 353         unsigned long __v = (unsigned long)(val);               \
 354         __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\
 355                               : "=r" (__v) : "rK" (__v)         \
 356                               : "memory");                      \
 357         __v;                                                    \
 358 })
 359
 360 #define csr_set(csr, val)                                       \
 361 ({                                                              \
 362         unsigned long __v = (unsigned long)(val);               \
 363         __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0"     \
 364                               : : "rK" (__v)                    \
 365                               : "memory");                      \
 366 })
 367
 368 #define csr_read_clear(csr, val)                                \
 369 ({                                                              \
 370         unsigned long __v = (unsigned long)(val);               \
 371         __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\
 372                               : "=r" (__v) : "rK" (__v)         \
 373                               : "memory");                      \
 374         __v;                                                    \
 375 })
 376
 377 #define csr_clear(csr, val)                                     \
 378 ({                                                              \
 379         unsigned long __v = (unsigned long)(val);               \
 380         __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0"     \
 381                               : : "rK" (__v)                    \
 382                               : "memory");                      \
 383 })
 384
 385 #endif /* __ASSEMBLY__ */
 386
 387 #endif /* _ASM_RISCV_CSR_H */