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_MODE SATP_MODE_32 44 #define SATP_ASID_BITS 9 45 #define SATP_ASID_SHIFT 22 46 #define SATP_ASID_MASK _AC(0x1FF, UL) 47 #else 48 #define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL) 49 #define SATP_MODE_39 _AC(0x8000000000000000, UL) 50 #define SATP_MODE SATP_MODE_39 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 70 /* Exception causes */ 71 #define EXC_INST_MISALIGNED 0 72 #define EXC_INST_ACCESS 1 73 #define EXC_INST_ILLEGAL 2 74 #define EXC_BREAKPOINT 3 75 #define EXC_LOAD_ACCESS 5 76 #define EXC_STORE_ACCESS 7 77 #define EXC_SYSCALL 8 78 #define EXC_HYPERVISOR_SYSCALL 9 79 #define EXC_SUPERVISOR_SYSCALL 10 80 #define EXC_INST_PAGE_FAULT 12 81 #define EXC_LOAD_PAGE_FAULT 13 82 #define EXC_STORE_PAGE_FAULT 15 83 #define EXC_INST_GUEST_PAGE_FAULT 20 84 #define EXC_LOAD_GUEST_PAGE_FAULT 21 85 #define EXC_VIRTUAL_INST_FAULT 22 86 #define EXC_STORE_GUEST_PAGE_FAULT 23 87 88 /* PMP configuration */ 89 #define PMP_R 0x01 90 #define PMP_W 0x02 91 #define PMP_X 0x04 92 #define PMP_A 0x18 93 #define PMP_A_TOR 0x08 94 #define PMP_A_NA4 0x10 95 #define PMP_A_NAPOT 0x18 96 #define PMP_L 0x80 97 98 /* HSTATUS flags */ 99 #ifdef CONFIG_64BIT 100 #define HSTATUS_VSXL _AC(0x300000000, UL) 101 #define HSTATUS_VSXL_SHIFT 32 102 #endif 103 #define HSTATUS_VTSR _AC(0x00400000, UL) 104 #define HSTATUS_VTW _AC(0x00200000, UL) 105 #define HSTATUS_VTVM _AC(0x00100000, UL) 106 #define HSTATUS_VGEIN _AC(0x0003f000, UL) 107 #define HSTATUS_VGEIN_SHIFT 12 108 #define HSTATUS_HU _AC(0x00000200, UL) 109 #define HSTATUS_SPVP _AC(0x00000100, UL) 110 #define HSTATUS_SPV _AC(0x00000080, UL) 111 #define HSTATUS_GVA _AC(0x00000040, UL) 112 #define HSTATUS_VSBE _AC(0x00000020, UL) 113 114 /* HGATP flags */ 115 #define HGATP_MODE_OFF _AC(0, UL) 116 #define HGATP_MODE_SV32X4 _AC(1, UL) 117 #define HGATP_MODE_SV39X4 _AC(8, UL) 118 #define HGATP_MODE_SV48X4 _AC(9, UL) 119 120 #define HGATP32_MODE_SHIFT 31 121 #define HGATP32_VMID_SHIFT 22 122 #define HGATP32_VMID_MASK _AC(0x1FC00000, UL) 123 #define HGATP32_PPN _AC(0x003FFFFF, UL) 124 125 #define HGATP64_MODE_SHIFT 60 126 #define HGATP64_VMID_SHIFT 44 127 #define HGATP64_VMID_MASK _AC(0x03FFF00000000000, UL) 128 #define HGATP64_PPN _AC(0x00000FFFFFFFFFFF, UL) 129 130 #define HGATP_PAGE_SHIFT 12 131 132 #ifdef CONFIG_64BIT 133 #define HGATP_PPN HGATP64_PPN 134 #define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT 135 #define HGATP_VMID_MASK HGATP64_VMID_MASK 136 #define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT 137 #else 138 #define HGATP_PPN HGATP32_PPN 139 #define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT 140 #define HGATP_VMID_MASK HGATP32_VMID_MASK 141 #define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT 142 #endif 143 144 /* VSIP & HVIP relation */ 145 #define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT) 146 #define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \ 147 (_AC(1, UL) << IRQ_S_TIMER) | \ 148 (_AC(1, UL) << IRQ_S_EXT)) 149 150 /* symbolic CSR names: */ 151 #define CSR_CYCLE 0xc00 152 #define CSR_TIME 0xc01 153 #define CSR_INSTRET 0xc02 154 #define CSR_CYCLEH 0xc80 155 #define CSR_TIMEH 0xc81 156 #define CSR_INSTRETH 0xc82 157 158 #define CSR_SSTATUS 0x100 159 #define CSR_SIE 0x104 160 #define CSR_STVEC 0x105 161 #define CSR_SCOUNTEREN 0x106 162 #define CSR_SSCRATCH 0x140 163 #define CSR_SEPC 0x141 164 #define CSR_SCAUSE 0x142 165 #define CSR_STVAL 0x143 166 #define CSR_SIP 0x144 167 #define CSR_SATP 0x180 168 169 #define CSR_VSSTATUS 0x200 170 #define CSR_VSIE 0x204 171 #define CSR_VSTVEC 0x205 172 #define CSR_VSSCRATCH 0x240 173 #define CSR_VSEPC 0x241 174 #define CSR_VSCAUSE 0x242 175 #define CSR_VSTVAL 0x243 176 #define CSR_VSIP 0x244 177 #define CSR_VSATP 0x280 178 179 #define CSR_HSTATUS 0x600 180 #define CSR_HEDELEG 0x602 181 #define CSR_HIDELEG 0x603 182 #define CSR_HIE 0x604 183 #define CSR_HTIMEDELTA 0x605 184 #define CSR_HCOUNTEREN 0x606 185 #define CSR_HGEIE 0x607 186 #define CSR_HTIMEDELTAH 0x615 187 #define CSR_HTVAL 0x643 188 #define CSR_HIP 0x644 189 #define CSR_HVIP 0x645 190 #define CSR_HTINST 0x64a 191 #define CSR_HGATP 0x680 192 #define CSR_HGEIP 0xe12 193 194 #define CSR_MSTATUS 0x300 195 #define CSR_MISA 0x301 196 #define CSR_MIE 0x304 197 #define CSR_MTVEC 0x305 198 #define CSR_MSCRATCH 0x340 199 #define CSR_MEPC 0x341 200 #define CSR_MCAUSE 0x342 201 #define CSR_MTVAL 0x343 202 #define CSR_MIP 0x344 203 #define CSR_PMPCFG0 0x3a0 204 #define CSR_PMPADDR0 0x3b0 205 #define CSR_MVENDORID 0xf11 206 #define CSR_MARCHID 0xf12 207 #define CSR_MIMPID 0xf13 208 #define CSR_MHARTID 0xf14 209 210 #ifdef CONFIG_RISCV_M_MODE 211 # define CSR_STATUS CSR_MSTATUS 212 # define CSR_IE CSR_MIE 213 # define CSR_TVEC CSR_MTVEC 214 # define CSR_SCRATCH CSR_MSCRATCH 215 # define CSR_EPC CSR_MEPC 216 # define CSR_CAUSE CSR_MCAUSE 217 # define CSR_TVAL CSR_MTVAL 218 # define CSR_IP CSR_MIP 219 220 # define SR_IE SR_MIE 221 # define SR_PIE SR_MPIE 222 # define SR_PP SR_MPP 223 224 # define RV_IRQ_SOFT IRQ_M_SOFT 225 # define RV_IRQ_TIMER IRQ_M_TIMER 226 # define RV_IRQ_EXT IRQ_M_EXT 227 #else /* CONFIG_RISCV_M_MODE */ 228 # define CSR_STATUS CSR_SSTATUS 229 # define CSR_IE CSR_SIE 230 # define CSR_TVEC CSR_STVEC 231 # define CSR_SCRATCH CSR_SSCRATCH 232 # define CSR_EPC CSR_SEPC 233 # define CSR_CAUSE CSR_SCAUSE 234 # define CSR_TVAL CSR_STVAL 235 # define CSR_IP CSR_SIP 236 237 # define SR_IE SR_SIE 238 # define SR_PIE SR_SPIE 239 # define SR_PP SR_SPP 240 241 # define RV_IRQ_SOFT IRQ_S_SOFT 242 # define RV_IRQ_TIMER IRQ_S_TIMER 243 # define RV_IRQ_EXT IRQ_S_EXT 244 #endif /* CONFIG_RISCV_M_MODE */ 245 246 /* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */ 247 #define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT) 248 #define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER) 249 #define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT) 250 251 #ifndef __ASSEMBLY__ 252 253 #define csr_swap(csr, val) \ 254 ({ \ 255 unsigned long __v = (unsigned long)(val); \ 256 __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\ 257 : "=r" (__v) : "rK" (__v) \ 258 : "memory"); \ 259 __v; \ 260 }) 261 262 #define csr_read(csr) \ 263 ({ \ 264 register unsigned long __v; \ 265 __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \ 266 : "=r" (__v) : \ 267 : "memory"); \ 268 __v; \ 269 }) 270 271 #define csr_write(csr, val) \ 272 ({ \ 273 unsigned long __v = (unsigned long)(val); \ 274 __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \ 275 : : "rK" (__v) \ 276 : "memory"); \ 277 }) 278 279 #define csr_read_set(csr, val) \ 280 ({ \ 281 unsigned long __v = (unsigned long)(val); \ 282 __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\ 283 : "=r" (__v) : "rK" (__v) \ 284 : "memory"); \ 285 __v; \ 286 }) 287 288 #define csr_set(csr, val) \ 289 ({ \ 290 unsigned long __v = (unsigned long)(val); \ 291 __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \ 292 : : "rK" (__v) \ 293 : "memory"); \ 294 }) 295 296 #define csr_read_clear(csr, val) \ 297 ({ \ 298 unsigned long __v = (unsigned long)(val); \ 299 __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\ 300 : "=r" (__v) : "rK" (__v) \ 301 : "memory"); \ 302 __v; \ 303 }) 304 305 #define csr_clear(csr, val) \ 306 ({ \ 307 unsigned long __v = (unsigned long)(val); \ 308 __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \ 309 : : "rK" (__v) \ 310 : "memory"); \ 311 }) 312 313 #endif /* __ASSEMBLY__ */ 314 315 #endif /* _ASM_RISCV_CSR_H */ 316