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 /* xENVCFG flags */ 160 #define ENVCFG_STCE (_AC(1, ULL) << 63) 161 #define ENVCFG_PBMTE (_AC(1, ULL) << 62) 162 #define ENVCFG_CBZE (_AC(1, UL) << 7) 163 #define ENVCFG_CBCFE (_AC(1, UL) << 6) 164 #define ENVCFG_CBIE_SHIFT 4 165 #define ENVCFG_CBIE (_AC(0x3, UL) << ENVCFG_CBIE_SHIFT) 166 #define ENVCFG_CBIE_ILL _AC(0x0, UL) 167 #define ENVCFG_CBIE_FLUSH _AC(0x1, UL) 168 #define ENVCFG_CBIE_INV _AC(0x3, UL) 169 #define ENVCFG_FIOM _AC(0x1, UL) 170 171 /* symbolic CSR names: */ 172 #define CSR_CYCLE 0xc00 173 #define CSR_TIME 0xc01 174 #define CSR_INSTRET 0xc02 175 #define CSR_HPMCOUNTER3 0xc03 176 #define CSR_HPMCOUNTER4 0xc04 177 #define CSR_HPMCOUNTER5 0xc05 178 #define CSR_HPMCOUNTER6 0xc06 179 #define CSR_HPMCOUNTER7 0xc07 180 #define CSR_HPMCOUNTER8 0xc08 181 #define CSR_HPMCOUNTER9 0xc09 182 #define CSR_HPMCOUNTER10 0xc0a 183 #define CSR_HPMCOUNTER11 0xc0b 184 #define CSR_HPMCOUNTER12 0xc0c 185 #define CSR_HPMCOUNTER13 0xc0d 186 #define CSR_HPMCOUNTER14 0xc0e 187 #define CSR_HPMCOUNTER15 0xc0f 188 #define CSR_HPMCOUNTER16 0xc10 189 #define CSR_HPMCOUNTER17 0xc11 190 #define CSR_HPMCOUNTER18 0xc12 191 #define CSR_HPMCOUNTER19 0xc13 192 #define CSR_HPMCOUNTER20 0xc14 193 #define CSR_HPMCOUNTER21 0xc15 194 #define CSR_HPMCOUNTER22 0xc16 195 #define CSR_HPMCOUNTER23 0xc17 196 #define CSR_HPMCOUNTER24 0xc18 197 #define CSR_HPMCOUNTER25 0xc19 198 #define CSR_HPMCOUNTER26 0xc1a 199 #define CSR_HPMCOUNTER27 0xc1b 200 #define CSR_HPMCOUNTER28 0xc1c 201 #define CSR_HPMCOUNTER29 0xc1d 202 #define CSR_HPMCOUNTER30 0xc1e 203 #define CSR_HPMCOUNTER31 0xc1f 204 #define CSR_CYCLEH 0xc80 205 #define CSR_TIMEH 0xc81 206 #define CSR_INSTRETH 0xc82 207 #define CSR_HPMCOUNTER3H 0xc83 208 #define CSR_HPMCOUNTER4H 0xc84 209 #define CSR_HPMCOUNTER5H 0xc85 210 #define CSR_HPMCOUNTER6H 0xc86 211 #define CSR_HPMCOUNTER7H 0xc87 212 #define CSR_HPMCOUNTER8H 0xc88 213 #define CSR_HPMCOUNTER9H 0xc89 214 #define CSR_HPMCOUNTER10H 0xc8a 215 #define CSR_HPMCOUNTER11H 0xc8b 216 #define CSR_HPMCOUNTER12H 0xc8c 217 #define CSR_HPMCOUNTER13H 0xc8d 218 #define CSR_HPMCOUNTER14H 0xc8e 219 #define CSR_HPMCOUNTER15H 0xc8f 220 #define CSR_HPMCOUNTER16H 0xc90 221 #define CSR_HPMCOUNTER17H 0xc91 222 #define CSR_HPMCOUNTER18H 0xc92 223 #define CSR_HPMCOUNTER19H 0xc93 224 #define CSR_HPMCOUNTER20H 0xc94 225 #define CSR_HPMCOUNTER21H 0xc95 226 #define CSR_HPMCOUNTER22H 0xc96 227 #define CSR_HPMCOUNTER23H 0xc97 228 #define CSR_HPMCOUNTER24H 0xc98 229 #define CSR_HPMCOUNTER25H 0xc99 230 #define CSR_HPMCOUNTER26H 0xc9a 231 #define CSR_HPMCOUNTER27H 0xc9b 232 #define CSR_HPMCOUNTER28H 0xc9c 233 #define CSR_HPMCOUNTER29H 0xc9d 234 #define CSR_HPMCOUNTER30H 0xc9e 235 #define CSR_HPMCOUNTER31H 0xc9f 236 237 #define CSR_SSCOUNTOVF 0xda0 238 239 #define CSR_SSTATUS 0x100 240 #define CSR_SIE 0x104 241 #define CSR_STVEC 0x105 242 #define CSR_SCOUNTEREN 0x106 243 #define CSR_SSCRATCH 0x140 244 #define CSR_SEPC 0x141 245 #define CSR_SCAUSE 0x142 246 #define CSR_STVAL 0x143 247 #define CSR_SIP 0x144 248 #define CSR_SATP 0x180 249 250 #define CSR_STIMECMP 0x14D 251 #define CSR_STIMECMPH 0x15D 252 253 #define CSR_VSSTATUS 0x200 254 #define CSR_VSIE 0x204 255 #define CSR_VSTVEC 0x205 256 #define CSR_VSSCRATCH 0x240 257 #define CSR_VSEPC 0x241 258 #define CSR_VSCAUSE 0x242 259 #define CSR_VSTVAL 0x243 260 #define CSR_VSIP 0x244 261 #define CSR_VSATP 0x280 262 #define CSR_VSTIMECMP 0x24D 263 #define CSR_VSTIMECMPH 0x25D 264 265 #define CSR_HSTATUS 0x600 266 #define CSR_HEDELEG 0x602 267 #define CSR_HIDELEG 0x603 268 #define CSR_HIE 0x604 269 #define CSR_HTIMEDELTA 0x605 270 #define CSR_HCOUNTEREN 0x606 271 #define CSR_HGEIE 0x607 272 #define CSR_HENVCFG 0x60a 273 #define CSR_HTIMEDELTAH 0x615 274 #define CSR_HENVCFGH 0x61a 275 #define CSR_HTVAL 0x643 276 #define CSR_HIP 0x644 277 #define CSR_HVIP 0x645 278 #define CSR_HTINST 0x64a 279 #define CSR_HGATP 0x680 280 #define CSR_HGEIP 0xe12 281 282 #define CSR_MSTATUS 0x300 283 #define CSR_MISA 0x301 284 #define CSR_MIE 0x304 285 #define CSR_MTVEC 0x305 286 #define CSR_MENVCFG 0x30a 287 #define CSR_MENVCFGH 0x31a 288 #define CSR_MSCRATCH 0x340 289 #define CSR_MEPC 0x341 290 #define CSR_MCAUSE 0x342 291 #define CSR_MTVAL 0x343 292 #define CSR_MIP 0x344 293 #define CSR_PMPCFG0 0x3a0 294 #define CSR_PMPADDR0 0x3b0 295 #define CSR_MVENDORID 0xf11 296 #define CSR_MARCHID 0xf12 297 #define CSR_MIMPID 0xf13 298 #define CSR_MHARTID 0xf14 299 300 #ifdef CONFIG_RISCV_M_MODE 301 # define CSR_STATUS CSR_MSTATUS 302 # define CSR_IE CSR_MIE 303 # define CSR_TVEC CSR_MTVEC 304 # define CSR_SCRATCH CSR_MSCRATCH 305 # define CSR_EPC CSR_MEPC 306 # define CSR_CAUSE CSR_MCAUSE 307 # define CSR_TVAL CSR_MTVAL 308 # define CSR_IP CSR_MIP 309 310 # define SR_IE SR_MIE 311 # define SR_PIE SR_MPIE 312 # define SR_PP SR_MPP 313 314 # define RV_IRQ_SOFT IRQ_M_SOFT 315 # define RV_IRQ_TIMER IRQ_M_TIMER 316 # define RV_IRQ_EXT IRQ_M_EXT 317 #else /* CONFIG_RISCV_M_MODE */ 318 # define CSR_STATUS CSR_SSTATUS 319 # define CSR_IE CSR_SIE 320 # define CSR_TVEC CSR_STVEC 321 # define CSR_SCRATCH CSR_SSCRATCH 322 # define CSR_EPC CSR_SEPC 323 # define CSR_CAUSE CSR_SCAUSE 324 # define CSR_TVAL CSR_STVAL 325 # define CSR_IP CSR_SIP 326 327 # define SR_IE SR_SIE 328 # define SR_PIE SR_SPIE 329 # define SR_PP SR_SPP 330 331 # define RV_IRQ_SOFT IRQ_S_SOFT 332 # define RV_IRQ_TIMER IRQ_S_TIMER 333 # define RV_IRQ_EXT IRQ_S_EXT 334 # define RV_IRQ_PMU IRQ_PMU_OVF 335 # define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF) 336 337 #endif /* !CONFIG_RISCV_M_MODE */ 338 339 /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */ 340 #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT) 341 #define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER) 342 #define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT) 343 344 #ifndef __ASSEMBLY__ 345 346 #define csr_swap(csr, val) \ 347 ({ \ 348 unsigned long __v = (unsigned long)(val); \ 349 __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\ 350 : "=r" (__v) : "rK" (__v) \ 351 : "memory"); \ 352 __v; \ 353 }) 354 355 #define csr_read(csr) \ 356 ({ \ 357 register unsigned long __v; \ 358 __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \ 359 : "=r" (__v) : \ 360 : "memory"); \ 361 __v; \ 362 }) 363 364 #define csr_write(csr, val) \ 365 ({ \ 366 unsigned long __v = (unsigned long)(val); \ 367 __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \ 368 : : "rK" (__v) \ 369 : "memory"); \ 370 }) 371 372 #define csr_read_set(csr, val) \ 373 ({ \ 374 unsigned long __v = (unsigned long)(val); \ 375 __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\ 376 : "=r" (__v) : "rK" (__v) \ 377 : "memory"); \ 378 __v; \ 379 }) 380 381 #define csr_set(csr, val) \ 382 ({ \ 383 unsigned long __v = (unsigned long)(val); \ 384 __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \ 385 : : "rK" (__v) \ 386 : "memory"); \ 387 }) 388 389 #define csr_read_clear(csr, val) \ 390 ({ \ 391 unsigned long __v = (unsigned long)(val); \ 392 __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\ 393 : "=r" (__v) : "rK" (__v) \ 394 : "memory"); \ 395 __v; \ 396 }) 397 398 #define csr_clear(csr, val) \ 399 ({ \ 400 unsigned long __v = (unsigned long)(val); \ 401 __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \ 402 : : "rK" (__v) \ 403 : "memory"); \ 404 }) 405 406 #endif /* __ASSEMBLY__ */ 407 408 #endif /* _ASM_RISCV_CSR_H */ 409