1 /* 2 * RISC-V VMState Description 3 * 4 * Copyright (c) 2020 Huawei Technologies Co., Ltd 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2 or later, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along with 16 * this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #include "qemu/osdep.h" 20 #include "cpu.h" 21 #include "qemu/error-report.h" 22 #include "system/kvm.h" 23 #include "migration/cpu.h" 24 #include "system/cpu-timers.h" 25 #include "debug.h" 26 27 static bool pmp_needed(void *opaque) 28 { 29 RISCVCPU *cpu = opaque; 30 31 return cpu->cfg.pmp; 32 } 33 34 static int pmp_post_load(void *opaque, int version_id) 35 { 36 RISCVCPU *cpu = opaque; 37 CPURISCVState *env = &cpu->env; 38 int i; 39 40 for (i = 0; i < MAX_RISCV_PMPS; i++) { 41 pmp_update_rule_addr(env, i); 42 } 43 pmp_update_rule_nums(env); 44 45 return 0; 46 } 47 48 static const VMStateDescription vmstate_pmp_entry = { 49 .name = "cpu/pmp/entry", 50 .version_id = 1, 51 .minimum_version_id = 1, 52 .fields = (const VMStateField[]) { 53 VMSTATE_UINTTL(addr_reg, pmp_entry_t), 54 VMSTATE_UINT8(cfg_reg, pmp_entry_t), 55 VMSTATE_END_OF_LIST() 56 } 57 }; 58 59 static const VMStateDescription vmstate_pmp = { 60 .name = "cpu/pmp", 61 .version_id = 1, 62 .minimum_version_id = 1, 63 .needed = pmp_needed, 64 .post_load = pmp_post_load, 65 .fields = (const VMStateField[]) { 66 VMSTATE_STRUCT_ARRAY(env.pmp_state.pmp, RISCVCPU, MAX_RISCV_PMPS, 67 0, vmstate_pmp_entry, pmp_entry_t), 68 VMSTATE_END_OF_LIST() 69 } 70 }; 71 72 static bool hyper_needed(void *opaque) 73 { 74 RISCVCPU *cpu = opaque; 75 CPURISCVState *env = &cpu->env; 76 77 return riscv_has_ext(env, RVH); 78 } 79 80 static const VMStateDescription vmstate_hyper = { 81 .name = "cpu/hyper", 82 .version_id = 4, 83 .minimum_version_id = 4, 84 .needed = hyper_needed, 85 .fields = (const VMStateField[]) { 86 VMSTATE_UINTTL(env.hstatus, RISCVCPU), 87 VMSTATE_UINTTL(env.hedeleg, RISCVCPU), 88 VMSTATE_UINT64(env.hideleg, RISCVCPU), 89 VMSTATE_UINT32(env.hcounteren, RISCVCPU), 90 VMSTATE_UINTTL(env.htval, RISCVCPU), 91 VMSTATE_UINTTL(env.htinst, RISCVCPU), 92 VMSTATE_UINTTL(env.hgatp, RISCVCPU), 93 VMSTATE_UINTTL(env.hgeie, RISCVCPU), 94 VMSTATE_UINTTL(env.hgeip, RISCVCPU), 95 VMSTATE_UINT64(env.hvien, RISCVCPU), 96 VMSTATE_UINT64(env.hvip, RISCVCPU), 97 VMSTATE_UINT64(env.htimedelta, RISCVCPU), 98 VMSTATE_UINT64(env.vstimecmp, RISCVCPU), 99 100 VMSTATE_UINTTL(env.hvictl, RISCVCPU), 101 VMSTATE_UINT8_ARRAY(env.hviprio, RISCVCPU, 64), 102 103 VMSTATE_UINT64(env.vsstatus, RISCVCPU), 104 VMSTATE_UINTTL(env.vstvec, RISCVCPU), 105 VMSTATE_UINTTL(env.vsscratch, RISCVCPU), 106 VMSTATE_UINTTL(env.vsepc, RISCVCPU), 107 VMSTATE_UINTTL(env.vscause, RISCVCPU), 108 VMSTATE_UINTTL(env.vstval, RISCVCPU), 109 VMSTATE_UINTTL(env.vsatp, RISCVCPU), 110 VMSTATE_UINTTL(env.vsiselect, RISCVCPU), 111 VMSTATE_UINT64(env.vsie, RISCVCPU), 112 113 VMSTATE_UINTTL(env.mtval2, RISCVCPU), 114 VMSTATE_UINTTL(env.mtinst, RISCVCPU), 115 116 VMSTATE_UINTTL(env.stvec_hs, RISCVCPU), 117 VMSTATE_UINTTL(env.sscratch_hs, RISCVCPU), 118 VMSTATE_UINTTL(env.sepc_hs, RISCVCPU), 119 VMSTATE_UINTTL(env.scause_hs, RISCVCPU), 120 VMSTATE_UINTTL(env.stval_hs, RISCVCPU), 121 VMSTATE_UINTTL(env.satp_hs, RISCVCPU), 122 VMSTATE_UINT64(env.mstatus_hs, RISCVCPU), 123 124 VMSTATE_END_OF_LIST() 125 } 126 }; 127 128 static bool vector_needed(void *opaque) 129 { 130 RISCVCPU *cpu = opaque; 131 CPURISCVState *env = &cpu->env; 132 133 return riscv_has_ext(env, RVV); 134 } 135 136 static const VMStateDescription vmstate_vector = { 137 .name = "cpu/vector", 138 .version_id = 2, 139 .minimum_version_id = 2, 140 .needed = vector_needed, 141 .fields = (const VMStateField[]) { 142 VMSTATE_UINT64_ARRAY(env.vreg, RISCVCPU, 32 * RV_VLEN_MAX / 64), 143 VMSTATE_UINTTL(env.vxrm, RISCVCPU), 144 VMSTATE_UINTTL(env.vxsat, RISCVCPU), 145 VMSTATE_UINTTL(env.vl, RISCVCPU), 146 VMSTATE_UINTTL(env.vstart, RISCVCPU), 147 VMSTATE_UINTTL(env.vtype, RISCVCPU), 148 VMSTATE_BOOL(env.vill, RISCVCPU), 149 VMSTATE_END_OF_LIST() 150 } 151 }; 152 153 static bool pointermasking_needed(void *opaque) 154 { 155 return false; 156 } 157 158 static const VMStateDescription vmstate_pointermasking = { 159 .name = "cpu/pointer_masking", 160 .version_id = 2, 161 .minimum_version_id = 2, 162 .needed = pointermasking_needed, 163 .fields = (const VMStateField[]) { 164 165 VMSTATE_END_OF_LIST() 166 } 167 }; 168 169 static bool rv128_needed(void *opaque) 170 { 171 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(opaque); 172 173 return mcc->misa_mxl_max == MXL_RV128; 174 } 175 176 static const VMStateDescription vmstate_rv128 = { 177 .name = "cpu/rv128", 178 .version_id = 1, 179 .minimum_version_id = 1, 180 .needed = rv128_needed, 181 .fields = (const VMStateField[]) { 182 VMSTATE_UINTTL_ARRAY(env.gprh, RISCVCPU, 32), 183 VMSTATE_UINT64(env.mscratchh, RISCVCPU), 184 VMSTATE_UINT64(env.sscratchh, RISCVCPU), 185 VMSTATE_END_OF_LIST() 186 } 187 }; 188 189 #ifdef CONFIG_KVM 190 static bool kvmtimer_needed(void *opaque) 191 { 192 return kvm_enabled(); 193 } 194 195 static int cpu_kvmtimer_post_load(void *opaque, int version_id) 196 { 197 RISCVCPU *cpu = opaque; 198 CPURISCVState *env = &cpu->env; 199 200 env->kvm_timer_dirty = true; 201 return 0; 202 } 203 204 static const VMStateDescription vmstate_kvmtimer = { 205 .name = "cpu/kvmtimer", 206 .version_id = 1, 207 .minimum_version_id = 1, 208 .needed = kvmtimer_needed, 209 .post_load = cpu_kvmtimer_post_load, 210 .fields = (const VMStateField[]) { 211 VMSTATE_UINT64(env.kvm_timer_time, RISCVCPU), 212 VMSTATE_UINT64(env.kvm_timer_compare, RISCVCPU), 213 VMSTATE_UINT64(env.kvm_timer_state, RISCVCPU), 214 VMSTATE_END_OF_LIST() 215 } 216 }; 217 #endif 218 219 static bool debug_needed(void *opaque) 220 { 221 RISCVCPU *cpu = opaque; 222 223 return cpu->cfg.debug; 224 } 225 226 static int debug_post_load(void *opaque, int version_id) 227 { 228 RISCVCPU *cpu = opaque; 229 CPURISCVState *env = &cpu->env; 230 231 if (icount_enabled()) { 232 env->itrigger_enabled = riscv_itrigger_enabled(env); 233 } 234 235 return 0; 236 } 237 238 static const VMStateDescription vmstate_debug = { 239 .name = "cpu/debug", 240 .version_id = 2, 241 .minimum_version_id = 2, 242 .needed = debug_needed, 243 .post_load = debug_post_load, 244 .fields = (const VMStateField[]) { 245 VMSTATE_UINTTL(env.trigger_cur, RISCVCPU), 246 VMSTATE_UINTTL_ARRAY(env.tdata1, RISCVCPU, RV_MAX_TRIGGERS), 247 VMSTATE_UINTTL_ARRAY(env.tdata2, RISCVCPU, RV_MAX_TRIGGERS), 248 VMSTATE_UINTTL_ARRAY(env.tdata3, RISCVCPU, RV_MAX_TRIGGERS), 249 VMSTATE_END_OF_LIST() 250 } 251 }; 252 253 static int riscv_cpu_post_load(void *opaque, int version_id) 254 { 255 RISCVCPU *cpu = opaque; 256 CPURISCVState *env = &cpu->env; 257 258 env->xl = cpu_recompute_xl(env); 259 return 0; 260 } 261 262 static bool smstateen_needed(void *opaque) 263 { 264 RISCVCPU *cpu = opaque; 265 266 return cpu->cfg.ext_smstateen; 267 } 268 269 static const VMStateDescription vmstate_smstateen = { 270 .name = "cpu/smtateen", 271 .version_id = 1, 272 .minimum_version_id = 1, 273 .needed = smstateen_needed, 274 .fields = (const VMStateField[]) { 275 VMSTATE_UINT64_ARRAY(env.mstateen, RISCVCPU, 4), 276 VMSTATE_UINT64_ARRAY(env.hstateen, RISCVCPU, 4), 277 VMSTATE_UINT64_ARRAY(env.sstateen, RISCVCPU, 4), 278 VMSTATE_END_OF_LIST() 279 } 280 }; 281 282 static bool envcfg_needed(void *opaque) 283 { 284 RISCVCPU *cpu = opaque; 285 CPURISCVState *env = &cpu->env; 286 287 return (env->priv_ver >= PRIV_VERSION_1_12_0 ? 1 : 0); 288 } 289 290 static const VMStateDescription vmstate_envcfg = { 291 .name = "cpu/envcfg", 292 .version_id = 1, 293 .minimum_version_id = 1, 294 .needed = envcfg_needed, 295 .fields = (const VMStateField[]) { 296 VMSTATE_UINT64(env.menvcfg, RISCVCPU), 297 VMSTATE_UINTTL(env.senvcfg, RISCVCPU), 298 VMSTATE_UINT64(env.henvcfg, RISCVCPU), 299 VMSTATE_END_OF_LIST() 300 } 301 }; 302 303 static bool pmu_needed(void *opaque) 304 { 305 RISCVCPU *cpu = opaque; 306 307 return (cpu->cfg.pmu_mask > 0); 308 } 309 310 static const VMStateDescription vmstate_pmu_ctr_state = { 311 .name = "cpu/pmu", 312 .version_id = 2, 313 .minimum_version_id = 2, 314 .needed = pmu_needed, 315 .fields = (const VMStateField[]) { 316 VMSTATE_UINTTL(mhpmcounter_val, PMUCTRState), 317 VMSTATE_UINTTL(mhpmcounterh_val, PMUCTRState), 318 VMSTATE_UINTTL(mhpmcounter_prev, PMUCTRState), 319 VMSTATE_UINTTL(mhpmcounterh_prev, PMUCTRState), 320 VMSTATE_END_OF_LIST() 321 } 322 }; 323 324 static bool jvt_needed(void *opaque) 325 { 326 RISCVCPU *cpu = opaque; 327 328 return cpu->cfg.ext_zcmt; 329 } 330 331 static const VMStateDescription vmstate_jvt = { 332 .name = "cpu/jvt", 333 .version_id = 1, 334 .minimum_version_id = 1, 335 .needed = jvt_needed, 336 .fields = (const VMStateField[]) { 337 VMSTATE_UINTTL(env.jvt, RISCVCPU), 338 VMSTATE_END_OF_LIST() 339 } 340 }; 341 342 static bool elp_needed(void *opaque) 343 { 344 RISCVCPU *cpu = opaque; 345 346 return cpu->cfg.ext_zicfilp; 347 } 348 349 static const VMStateDescription vmstate_elp = { 350 .name = "cpu/elp", 351 .version_id = 1, 352 .minimum_version_id = 1, 353 .needed = elp_needed, 354 .fields = (const VMStateField[]) { 355 VMSTATE_BOOL(env.elp, RISCVCPU), 356 VMSTATE_END_OF_LIST() 357 } 358 }; 359 360 static bool ssp_needed(void *opaque) 361 { 362 RISCVCPU *cpu = opaque; 363 364 return cpu->cfg.ext_zicfiss; 365 } 366 367 static const VMStateDescription vmstate_ssp = { 368 .name = "cpu/ssp", 369 .version_id = 1, 370 .minimum_version_id = 1, 371 .needed = ssp_needed, 372 .fields = (const VMStateField[]) { 373 VMSTATE_UINTTL(env.ssp, RISCVCPU), 374 VMSTATE_END_OF_LIST() 375 } 376 }; 377 378 const VMStateDescription vmstate_riscv_cpu = { 379 .name = "cpu", 380 .version_id = 10, 381 .minimum_version_id = 10, 382 .post_load = riscv_cpu_post_load, 383 .fields = (const VMStateField[]) { 384 VMSTATE_UINTTL_ARRAY(env.gpr, RISCVCPU, 32), 385 VMSTATE_UINT64_ARRAY(env.fpr, RISCVCPU, 32), 386 VMSTATE_UINT8_ARRAY(env.miprio, RISCVCPU, 64), 387 VMSTATE_UINT8_ARRAY(env.siprio, RISCVCPU, 64), 388 VMSTATE_UINTTL(env.pc, RISCVCPU), 389 VMSTATE_UINTTL(env.load_res, RISCVCPU), 390 VMSTATE_UINTTL(env.load_val, RISCVCPU), 391 VMSTATE_UINTTL(env.frm, RISCVCPU), 392 VMSTATE_UINTTL(env.badaddr, RISCVCPU), 393 VMSTATE_UINTTL(env.guest_phys_fault_addr, RISCVCPU), 394 VMSTATE_UINTTL(env.priv_ver, RISCVCPU), 395 VMSTATE_UINTTL(env.vext_ver, RISCVCPU), 396 VMSTATE_UINT32(env.misa_mxl, RISCVCPU), 397 VMSTATE_UINT32(env.misa_ext, RISCVCPU), 398 VMSTATE_UNUSED(4), 399 VMSTATE_UINT32(env.misa_ext_mask, RISCVCPU), 400 VMSTATE_UINTTL(env.priv, RISCVCPU), 401 VMSTATE_BOOL(env.virt_enabled, RISCVCPU), 402 VMSTATE_UINT64(env.resetvec, RISCVCPU), 403 VMSTATE_UINTTL(env.mhartid, RISCVCPU), 404 VMSTATE_UINT64(env.mstatus, RISCVCPU), 405 VMSTATE_UINT64(env.mip, RISCVCPU), 406 VMSTATE_UINT64(env.miclaim, RISCVCPU), 407 VMSTATE_UINT64(env.mie, RISCVCPU), 408 VMSTATE_UINT64(env.mvien, RISCVCPU), 409 VMSTATE_UINT64(env.mvip, RISCVCPU), 410 VMSTATE_UINT64(env.sie, RISCVCPU), 411 VMSTATE_UINT64(env.mideleg, RISCVCPU), 412 VMSTATE_UINTTL(env.satp, RISCVCPU), 413 VMSTATE_UINTTL(env.stval, RISCVCPU), 414 VMSTATE_UINTTL(env.medeleg, RISCVCPU), 415 VMSTATE_UINTTL(env.stvec, RISCVCPU), 416 VMSTATE_UINTTL(env.sepc, RISCVCPU), 417 VMSTATE_UINTTL(env.scause, RISCVCPU), 418 VMSTATE_UINTTL(env.mtvec, RISCVCPU), 419 VMSTATE_UINTTL(env.mepc, RISCVCPU), 420 VMSTATE_UINTTL(env.mcause, RISCVCPU), 421 VMSTATE_UINTTL(env.mtval, RISCVCPU), 422 VMSTATE_UINTTL(env.miselect, RISCVCPU), 423 VMSTATE_UINTTL(env.siselect, RISCVCPU), 424 VMSTATE_UINT32(env.scounteren, RISCVCPU), 425 VMSTATE_UINT32(env.mcounteren, RISCVCPU), 426 VMSTATE_UINT32(env.scountinhibit, RISCVCPU), 427 VMSTATE_UINT32(env.mcountinhibit, RISCVCPU), 428 VMSTATE_STRUCT_ARRAY(env.pmu_ctrs, RISCVCPU, RV_MAX_MHPMCOUNTERS, 0, 429 vmstate_pmu_ctr_state, PMUCTRState), 430 VMSTATE_UINTTL_ARRAY(env.mhpmevent_val, RISCVCPU, RV_MAX_MHPMEVENTS), 431 VMSTATE_UINTTL_ARRAY(env.mhpmeventh_val, RISCVCPU, RV_MAX_MHPMEVENTS), 432 VMSTATE_UINTTL(env.sscratch, RISCVCPU), 433 VMSTATE_UINTTL(env.mscratch, RISCVCPU), 434 VMSTATE_UINT64(env.stimecmp, RISCVCPU), 435 436 VMSTATE_END_OF_LIST() 437 }, 438 .subsections = (const VMStateDescription * const []) { 439 &vmstate_pmp, 440 &vmstate_hyper, 441 &vmstate_vector, 442 &vmstate_pointermasking, 443 &vmstate_rv128, 444 #ifdef CONFIG_KVM 445 &vmstate_kvmtimer, 446 #endif 447 &vmstate_envcfg, 448 &vmstate_debug, 449 &vmstate_smstateen, 450 &vmstate_jvt, 451 &vmstate_elp, 452 &vmstate_ssp, 453 NULL 454 } 455 }; 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