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 /* SATP flags */ 40 #ifndef CONFIG_64BIT 41 #define SATP_PPN _AC(0x003FFFFF, UL) 42 #define SATP_MODE_32 _AC(0x80000000, UL) 43 #define SATP_ASID_BITS 9 44 #define SATP_ASID_SHIFT 22 45 #define SATP_ASID_MASK _AC(0x1FF, UL) 46 #else 47 #define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL) 48 #define SATP_MODE_39 _AC(0x8000000000000000, UL) 49 #define SATP_MODE_48 _AC(0x9000000000000000, UL) 50 #define SATP_MODE_57 _AC(0xa000000000000000, UL) 51 #define SATP_ASID_BITS 16 52 #define SATP_ASID_SHIFT 44 53 #define SATP_ASID_MASK _AC(0xFFFF, UL) 54 #endif 55 56 /* Exception cause high bit - is an interrupt if set */ 57 #define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1)) 58 59 /* Interrupt causes (minus the high bit) */ 60 #define IRQ_S_SOFT 1 61 #define IRQ_VS_SOFT 2 62 #define IRQ_M_SOFT 3 63 #define IRQ_S_TIMER 5 64 #define IRQ_VS_TIMER 6 65 #define IRQ_M_TIMER 7 66 #define IRQ_S_EXT 9 67 #define IRQ_VS_EXT 10 68 #define IRQ_M_EXT 11 69 #define IRQ_PMU_OVF 13 70 71 /* Exception causes */ 72 #define EXC_INST_MISALIGNED 0 73 #define EXC_INST_ACCESS 1 74 #define EXC_INST_ILLEGAL 2 75 #define EXC_BREAKPOINT 3 76 #define EXC_LOAD_ACCESS 5 77 #define EXC_STORE_ACCESS 7 78 #define EXC_SYSCALL 8 79 #define EXC_HYPERVISOR_SYSCALL 9 80 #define EXC_SUPERVISOR_SYSCALL 10 81 #define EXC_INST_PAGE_FAULT 12 82 #define EXC_LOAD_PAGE_FAULT 13 83 #define EXC_STORE_PAGE_FAULT 15 84 #define EXC_INST_GUEST_PAGE_FAULT 20 85 #define EXC_LOAD_GUEST_PAGE_FAULT 21 86 #define EXC_VIRTUAL_INST_FAULT 22 87 #define EXC_STORE_GUEST_PAGE_FAULT 23 88 89 /* PMP configuration */ 90 #define PMP_R 0x01 91 #define PMP_W 0x02 92 #define PMP_X 0x04 93 #define PMP_A 0x18 94 #define PMP_A_TOR 0x08 95 #define PMP_A_NA4 0x10 96 #define PMP_A_NAPOT 0x18 97 #define PMP_L 0x80 98 99 /* HSTATUS flags */ 100 #ifdef CONFIG_64BIT 101 #define HSTATUS_VSXL _AC(0x300000000, UL) 102 #define HSTATUS_VSXL_SHIFT 32 103 #endif 104 #define HSTATUS_VTSR _AC(0x00400000, UL) 105 #define HSTATUS_VTW _AC(0x00200000, UL) 106 #define HSTATUS_VTVM _AC(0x00100000, UL) 107 #define HSTATUS_VGEIN _AC(0x0003f000, UL) 108 #define HSTATUS_VGEIN_SHIFT 12 109 #define HSTATUS_HU _AC(0x00000200, UL) 110 #define HSTATUS_SPVP _AC(0x00000100, UL) 111 #define HSTATUS_SPV _AC(0x00000080, UL) 112 #define HSTATUS_GVA _AC(0x00000040, UL) 113 #define HSTATUS_VSBE _AC(0x00000020, UL) 114 115 /* HGATP flags */ 116 #define HGATP_MODE_OFF _AC(0, UL) 117 #define HGATP_MODE_SV32X4 _AC(1, UL) 118 #define HGATP_MODE_SV39X4 _AC(8, UL) 119 #define HGATP_MODE_SV48X4 _AC(9, UL) 120 121 #define HGATP32_MODE_SHIFT 31 122 #define HGATP32_VMID_SHIFT 22 123 #define HGATP32_VMID_MASK _AC(0x1FC00000, UL) 124 #define HGATP32_PPN _AC(0x003FFFFF, UL) 125 126 #define HGATP64_MODE_SHIFT 60 127 #define HGATP64_VMID_SHIFT 44 128 #define HGATP64_VMID_MASK _AC(0x03FFF00000000000, UL) 129 #define HGATP64_PPN _AC(0x00000FFFFFFFFFFF, UL) 130 131 #define HGATP_PAGE_SHIFT 12 132 133 #ifdef CONFIG_64BIT 134 #define HGATP_PPN HGATP64_PPN 135 #define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT 136 #define HGATP_VMID_MASK HGATP64_VMID_MASK 137 #define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT 138 #else 139 #define HGATP_PPN HGATP32_PPN 140 #define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT 141 #define HGATP_VMID_MASK HGATP32_VMID_MASK 142 #define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT 143 #endif 144 145 /* VSIP & HVIP relation */ 146 #define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT) 147 #define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \ 148 (_AC(1, UL) << IRQ_S_TIMER) | \ 149 (_AC(1, UL) << IRQ_S_EXT)) 150 151 /* symbolic CSR names: */ 152 #define CSR_CYCLE 0xc00 153 #define CSR_TIME 0xc01 154 #define CSR_INSTRET 0xc02 155 #define CSR_HPMCOUNTER3 0xc03 156 #define CSR_HPMCOUNTER4 0xc04 157 #define CSR_HPMCOUNTER5 0xc05 158 #define CSR_HPMCOUNTER6 0xc06 159 #define CSR_HPMCOUNTER7 0xc07 160 #define CSR_HPMCOUNTER8 0xc08 161 #define CSR_HPMCOUNTER9 0xc09 162 #define CSR_HPMCOUNTER10 0xc0a 163 #define CSR_HPMCOUNTER11 0xc0b 164 #define CSR_HPMCOUNTER12 0xc0c 165 #define CSR_HPMCOUNTER13 0xc0d 166 #define CSR_HPMCOUNTER14 0xc0e 167 #define CSR_HPMCOUNTER15 0xc0f 168 #define CSR_HPMCOUNTER16 0xc10 169 #define CSR_HPMCOUNTER17 0xc11 170 #define CSR_HPMCOUNTER18 0xc12 171 #define CSR_HPMCOUNTER19 0xc13 172 #define CSR_HPMCOUNTER20 0xc14 173 #define CSR_HPMCOUNTER21 0xc15 174 #define CSR_HPMCOUNTER22 0xc16 175 #define CSR_HPMCOUNTER23 0xc17 176 #define CSR_HPMCOUNTER24 0xc18 177 #define CSR_HPMCOUNTER25 0xc19 178 #define CSR_HPMCOUNTER26 0xc1a 179 #define CSR_HPMCOUNTER27 0xc1b 180 #define CSR_HPMCOUNTER28 0xc1c 181 #define CSR_HPMCOUNTER29 0xc1d 182 #define CSR_HPMCOUNTER30 0xc1e 183 #define CSR_HPMCOUNTER31 0xc1f 184 #define CSR_CYCLEH 0xc80 185 #define CSR_TIMEH 0xc81 186 #define CSR_INSTRETH 0xc82 187 #define CSR_HPMCOUNTER3H 0xc83 188 #define CSR_HPMCOUNTER4H 0xc84 189 #define CSR_HPMCOUNTER5H 0xc85 190 #define CSR_HPMCOUNTER6H 0xc86 191 #define CSR_HPMCOUNTER7H 0xc87 192 #define CSR_HPMCOUNTER8H 0xc88 193 #define CSR_HPMCOUNTER9H 0xc89 194 #define CSR_HPMCOUNTER10H 0xc8a 195 #define CSR_HPMCOUNTER11H 0xc8b 196 #define CSR_HPMCOUNTER12H 0xc8c 197 #define CSR_HPMCOUNTER13H 0xc8d 198 #define CSR_HPMCOUNTER14H 0xc8e 199 #define CSR_HPMCOUNTER15H 0xc8f 200 #define CSR_HPMCOUNTER16H 0xc90 201 #define CSR_HPMCOUNTER17H 0xc91 202 #define CSR_HPMCOUNTER18H 0xc92 203 #define CSR_HPMCOUNTER19H 0xc93 204 #define CSR_HPMCOUNTER20H 0xc94 205 #define CSR_HPMCOUNTER21H 0xc95 206 #define CSR_HPMCOUNTER22H 0xc96 207 #define CSR_HPMCOUNTER23H 0xc97 208 #define CSR_HPMCOUNTER24H 0xc98 209 #define CSR_HPMCOUNTER25H 0xc99 210 #define CSR_HPMCOUNTER26H 0xc9a 211 #define CSR_HPMCOUNTER27H 0xc9b 212 #define CSR_HPMCOUNTER28H 0xc9c 213 #define CSR_HPMCOUNTER29H 0xc9d 214 #define CSR_HPMCOUNTER30H 0xc9e 215 #define CSR_HPMCOUNTER31H 0xc9f 216 217 #define CSR_SSCOUNTOVF 0xda0 218 219 #define CSR_SSTATUS 0x100 220 #define CSR_SIE 0x104 221 #define CSR_STVEC 0x105 222 #define CSR_SCOUNTEREN 0x106 223 #define CSR_SSCRATCH 0x140 224 #define CSR_SEPC 0x141 225 #define CSR_SCAUSE 0x142 226 #define CSR_STVAL 0x143 227 #define CSR_SIP 0x144 228 #define CSR_SATP 0x180 229 230 #define CSR_VSSTATUS 0x200 231 #define CSR_VSIE 0x204 232 #define CSR_VSTVEC 0x205 233 #define CSR_VSSCRATCH 0x240 234 #define CSR_VSEPC 0x241 235 #define CSR_VSCAUSE 0x242 236 #define CSR_VSTVAL 0x243 237 #define CSR_VSIP 0x244 238 #define CSR_VSATP 0x280 239 240 #define CSR_HSTATUS 0x600 241 #define CSR_HEDELEG 0x602 242 #define CSR_HIDELEG 0x603 243 #define CSR_HIE 0x604 244 #define CSR_HTIMEDELTA 0x605 245 #define CSR_HCOUNTEREN 0x606 246 #define CSR_HGEIE 0x607 247 #define CSR_HTIMEDELTAH 0x615 248 #define CSR_HTVAL 0x643 249 #define CSR_HIP 0x644 250 #define CSR_HVIP 0x645 251 #define CSR_HTINST 0x64a 252 #define CSR_HGATP 0x680 253 #define CSR_HGEIP 0xe12 254 255 #define CSR_MSTATUS 0x300 256 #define CSR_MISA 0x301 257 #define CSR_MIE 0x304 258 #define CSR_MTVEC 0x305 259 #define CSR_MSCRATCH 0x340 260 #define CSR_MEPC 0x341 261 #define CSR_MCAUSE 0x342 262 #define CSR_MTVAL 0x343 263 #define CSR_MIP 0x344 264 #define CSR_PMPCFG0 0x3a0 265 #define CSR_PMPADDR0 0x3b0 266 #define CSR_MVENDORID 0xf11 267 #define CSR_MARCHID 0xf12 268 #define CSR_MIMPID 0xf13 269 #define CSR_MHARTID 0xf14 270 271 #ifdef CONFIG_RISCV_M_MODE 272 # define CSR_STATUS CSR_MSTATUS 273 # define CSR_IE CSR_MIE 274 # define CSR_TVEC CSR_MTVEC 275 # define CSR_SCRATCH CSR_MSCRATCH 276 # define CSR_EPC CSR_MEPC 277 # define CSR_CAUSE CSR_MCAUSE 278 # define CSR_TVAL CSR_MTVAL 279 # define CSR_IP CSR_MIP 280 281 # define SR_IE SR_MIE 282 # define SR_PIE SR_MPIE 283 # define SR_PP SR_MPP 284 285 # define RV_IRQ_SOFT IRQ_M_SOFT 286 # define RV_IRQ_TIMER IRQ_M_TIMER 287 # define RV_IRQ_EXT IRQ_M_EXT 288 #else /* CONFIG_RISCV_M_MODE */ 289 # define CSR_STATUS CSR_SSTATUS 290 # define CSR_IE CSR_SIE 291 # define CSR_TVEC CSR_STVEC 292 # define CSR_SCRATCH CSR_SSCRATCH 293 # define CSR_EPC CSR_SEPC 294 # define CSR_CAUSE CSR_SCAUSE 295 # define CSR_TVAL CSR_STVAL 296 # define CSR_IP CSR_SIP 297 298 # define SR_IE SR_SIE 299 # define SR_PIE SR_SPIE 300 # define SR_PP SR_SPP 301 302 # define RV_IRQ_SOFT IRQ_S_SOFT 303 # define RV_IRQ_TIMER IRQ_S_TIMER 304 # define RV_IRQ_EXT IRQ_S_EXT 305 # define RV_IRQ_PMU IRQ_PMU_OVF 306 # define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF) 307 308 #endif /* !CONFIG_RISCV_M_MODE */ 309 310 /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */ 311 #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT) 312 #define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER) 313 #define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT) 314 315 #ifndef __ASSEMBLY__ 316 317 #define csr_swap(csr, val) \ 318 ({ \ 319 unsigned long __v = (unsigned long)(val); \ 320 __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\ 321 : "=r" (__v) : "rK" (__v) \ 322 : "memory"); \ 323 __v; \ 324 }) 325 326 #define csr_read(csr) \ 327 ({ \ 328 register unsigned long __v; \ 329 __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \ 330 : "=r" (__v) : \ 331 : "memory"); \ 332 __v; \ 333 }) 334 335 #define csr_write(csr, val) \ 336 ({ \ 337 unsigned long __v = (unsigned long)(val); \ 338 __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \ 339 : : "rK" (__v) \ 340 : "memory"); \ 341 }) 342 343 #define csr_read_set(csr, val) \ 344 ({ \ 345 unsigned long __v = (unsigned long)(val); \ 346 __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\ 347 : "=r" (__v) : "rK" (__v) \ 348 : "memory"); \ 349 __v; \ 350 }) 351 352 #define csr_set(csr, val) \ 353 ({ \ 354 unsigned long __v = (unsigned long)(val); \ 355 __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \ 356 : : "rK" (__v) \ 357 : "memory"); \ 358 }) 359 360 #define csr_read_clear(csr, val) \ 361 ({ \ 362 unsigned long __v = (unsigned long)(val); \ 363 __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\ 364 : "=r" (__v) : "rK" (__v) \ 365 : "memory"); \ 366 __v; \ 367 }) 368 369 #define csr_clear(csr, val) \ 370 ({ \ 371 unsigned long __v = (unsigned long)(val); \ 372 __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \ 373 : : "rK" (__v) \ 374 : "memory"); \ 375 }) 376 377 #endif /* __ASSEMBLY__ */ 378 379 #endif /* _ASM_RISCV_CSR_H */ 380