1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * QEMU LoongArch CPU 4 * 5 * Copyright (c) 2021 Loongson Technology Corporation Limited 6 */ 7 8 #include "qemu/osdep.h" 9 #include "qemu/log.h" 10 #include "qemu/qemu-print.h" 11 #include "qapi/error.h" 12 #include "qemu/module.h" 13 #include "sysemu/qtest.h" 14 #include "sysemu/tcg.h" 15 #include "sysemu/kvm.h" 16 #include "kvm/kvm_loongarch.h" 17 #include "exec/exec-all.h" 18 #include "cpu.h" 19 #include "internals.h" 20 #include "fpu/softfloat-helpers.h" 21 #include "cpu-csr.h" 22 #ifndef CONFIG_USER_ONLY 23 #include "sysemu/reset.h" 24 #endif 25 #include "vec.h" 26 #ifdef CONFIG_KVM 27 #include <linux/kvm.h> 28 #endif 29 #ifdef CONFIG_TCG 30 #include "exec/cpu_ldst.h" 31 #include "tcg/tcg.h" 32 #endif 33 34 const char * const regnames[32] = { 35 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", 36 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", 37 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", 38 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", 39 }; 40 41 const char * const fregnames[32] = { 42 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", 43 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", 44 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", 45 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", 46 }; 47 48 static const char * const excp_names[] = { 49 [EXCCODE_INT] = "Interrupt", 50 [EXCCODE_PIL] = "Page invalid exception for load", 51 [EXCCODE_PIS] = "Page invalid exception for store", 52 [EXCCODE_PIF] = "Page invalid exception for fetch", 53 [EXCCODE_PME] = "Page modified exception", 54 [EXCCODE_PNR] = "Page Not Readable exception", 55 [EXCCODE_PNX] = "Page Not Executable exception", 56 [EXCCODE_PPI] = "Page Privilege error", 57 [EXCCODE_ADEF] = "Address error for instruction fetch", 58 [EXCCODE_ADEM] = "Address error for Memory access", 59 [EXCCODE_SYS] = "Syscall", 60 [EXCCODE_BRK] = "Break", 61 [EXCCODE_INE] = "Instruction Non-Existent", 62 [EXCCODE_IPE] = "Instruction privilege error", 63 [EXCCODE_FPD] = "Floating Point Disabled", 64 [EXCCODE_FPE] = "Floating Point Exception", 65 [EXCCODE_DBP] = "Debug breakpoint", 66 [EXCCODE_BCE] = "Bound Check Exception", 67 [EXCCODE_SXD] = "128 bit vector instructions Disable exception", 68 [EXCCODE_ASXD] = "256 bit vector instructions Disable exception", 69 }; 70 71 const char *loongarch_exception_name(int32_t exception) 72 { 73 assert(excp_names[exception]); 74 return excp_names[exception]; 75 } 76 77 void G_NORETURN do_raise_exception(CPULoongArchState *env, 78 uint32_t exception, 79 uintptr_t pc) 80 { 81 CPUState *cs = env_cpu(env); 82 83 qemu_log_mask(CPU_LOG_INT, "%s: %d (%s)\n", 84 __func__, 85 exception, 86 loongarch_exception_name(exception)); 87 cs->exception_index = exception; 88 89 cpu_loop_exit_restore(cs, pc); 90 } 91 92 static void loongarch_cpu_set_pc(CPUState *cs, vaddr value) 93 { 94 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 95 CPULoongArchState *env = &cpu->env; 96 97 set_pc(env, value); 98 } 99 100 static vaddr loongarch_cpu_get_pc(CPUState *cs) 101 { 102 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 103 CPULoongArchState *env = &cpu->env; 104 105 return env->pc; 106 } 107 108 #ifndef CONFIG_USER_ONLY 109 #include "hw/loongarch/virt.h" 110 111 void loongarch_cpu_set_irq(void *opaque, int irq, int level) 112 { 113 LoongArchCPU *cpu = opaque; 114 CPULoongArchState *env = &cpu->env; 115 CPUState *cs = CPU(cpu); 116 117 if (irq < 0 || irq >= N_IRQS) { 118 return; 119 } 120 121 if (kvm_enabled()) { 122 kvm_loongarch_set_interrupt(cpu, irq, level); 123 } else if (tcg_enabled()) { 124 env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0); 125 if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) { 126 cpu_interrupt(cs, CPU_INTERRUPT_HARD); 127 } else { 128 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); 129 } 130 } 131 } 132 133 static inline bool cpu_loongarch_hw_interrupts_enabled(CPULoongArchState *env) 134 { 135 bool ret = 0; 136 137 ret = (FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE) && 138 !(FIELD_EX64(env->CSR_DBG, CSR_DBG, DST))); 139 140 return ret; 141 } 142 143 /* Check if there is pending and not masked out interrupt */ 144 static inline bool cpu_loongarch_hw_interrupts_pending(CPULoongArchState *env) 145 { 146 uint32_t pending; 147 uint32_t status; 148 149 pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS); 150 status = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE); 151 152 return (pending & status) != 0; 153 } 154 #endif 155 156 #ifdef CONFIG_TCG 157 #ifndef CONFIG_USER_ONLY 158 static void loongarch_cpu_do_interrupt(CPUState *cs) 159 { 160 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 161 CPULoongArchState *env = &cpu->env; 162 bool update_badinstr = 1; 163 int cause = -1; 164 const char *name; 165 bool tlbfill = FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR); 166 uint32_t vec_size = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, VS); 167 168 if (cs->exception_index != EXCCODE_INT) { 169 if (cs->exception_index < 0 || 170 cs->exception_index >= ARRAY_SIZE(excp_names)) { 171 name = "unknown"; 172 } else { 173 name = excp_names[cs->exception_index]; 174 } 175 176 qemu_log_mask(CPU_LOG_INT, 177 "%s enter: pc " TARGET_FMT_lx " ERA " TARGET_FMT_lx 178 " TLBRERA " TARGET_FMT_lx " %s exception\n", __func__, 179 env->pc, env->CSR_ERA, env->CSR_TLBRERA, name); 180 } 181 182 switch (cs->exception_index) { 183 case EXCCODE_DBP: 184 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DCL, 1); 185 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, ECODE, 0xC); 186 goto set_DERA; 187 set_DERA: 188 env->CSR_DERA = env->pc; 189 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DST, 1); 190 set_pc(env, env->CSR_EENTRY + 0x480); 191 break; 192 case EXCCODE_INT: 193 if (FIELD_EX64(env->CSR_DBG, CSR_DBG, DST)) { 194 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DEI, 1); 195 goto set_DERA; 196 } 197 QEMU_FALLTHROUGH; 198 case EXCCODE_PIF: 199 case EXCCODE_ADEF: 200 cause = cs->exception_index; 201 update_badinstr = 0; 202 break; 203 case EXCCODE_SYS: 204 case EXCCODE_BRK: 205 case EXCCODE_INE: 206 case EXCCODE_IPE: 207 case EXCCODE_FPD: 208 case EXCCODE_FPE: 209 case EXCCODE_SXD: 210 case EXCCODE_ASXD: 211 env->CSR_BADV = env->pc; 212 QEMU_FALLTHROUGH; 213 case EXCCODE_BCE: 214 case EXCCODE_ADEM: 215 case EXCCODE_PIL: 216 case EXCCODE_PIS: 217 case EXCCODE_PME: 218 case EXCCODE_PNR: 219 case EXCCODE_PNX: 220 case EXCCODE_PPI: 221 cause = cs->exception_index; 222 break; 223 default: 224 qemu_log("Error: exception(%d) has not been supported\n", 225 cs->exception_index); 226 abort(); 227 } 228 229 if (update_badinstr) { 230 env->CSR_BADI = cpu_ldl_code(env, env->pc); 231 } 232 233 /* Save PLV and IE */ 234 if (tlbfill) { 235 env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PPLV, 236 FIELD_EX64(env->CSR_CRMD, 237 CSR_CRMD, PLV)); 238 env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PIE, 239 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE)); 240 /* set the DA mode */ 241 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1); 242 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0); 243 env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, 244 PC, (env->pc >> 2)); 245 } else { 246 env->CSR_ESTAT = FIELD_DP64(env->CSR_ESTAT, CSR_ESTAT, ECODE, 247 EXCODE_MCODE(cause)); 248 env->CSR_ESTAT = FIELD_DP64(env->CSR_ESTAT, CSR_ESTAT, ESUBCODE, 249 EXCODE_SUBCODE(cause)); 250 env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PPLV, 251 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV)); 252 env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PIE, 253 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE)); 254 env->CSR_ERA = env->pc; 255 } 256 257 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0); 258 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0); 259 260 if (vec_size) { 261 vec_size = (1 << vec_size) * 4; 262 } 263 264 if (cs->exception_index == EXCCODE_INT) { 265 /* Interrupt */ 266 uint32_t vector = 0; 267 uint32_t pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS); 268 pending &= FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE); 269 270 /* Find the highest-priority interrupt. */ 271 vector = 31 - clz32(pending); 272 set_pc(env, env->CSR_EENTRY + \ 273 (EXCCODE_EXTERNAL_INT + vector) * vec_size); 274 qemu_log_mask(CPU_LOG_INT, 275 "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx 276 " cause %d\n" " A " TARGET_FMT_lx " D " 277 TARGET_FMT_lx " vector = %d ExC " TARGET_FMT_lx "ExS" 278 TARGET_FMT_lx "\n", 279 __func__, env->pc, env->CSR_ERA, 280 cause, env->CSR_BADV, env->CSR_DERA, vector, 281 env->CSR_ECFG, env->CSR_ESTAT); 282 } else { 283 if (tlbfill) { 284 set_pc(env, env->CSR_TLBRENTRY); 285 } else { 286 set_pc(env, env->CSR_EENTRY + EXCODE_MCODE(cause) * vec_size); 287 } 288 qemu_log_mask(CPU_LOG_INT, 289 "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx 290 " cause %d%s\n, ESTAT " TARGET_FMT_lx 291 " EXCFG " TARGET_FMT_lx " BADVA " TARGET_FMT_lx 292 "BADI " TARGET_FMT_lx " SYS_NUM " TARGET_FMT_lu 293 " cpu %d asid " TARGET_FMT_lx "\n", __func__, env->pc, 294 tlbfill ? env->CSR_TLBRERA : env->CSR_ERA, 295 cause, tlbfill ? "(refill)" : "", env->CSR_ESTAT, 296 env->CSR_ECFG, 297 tlbfill ? env->CSR_TLBRBADV : env->CSR_BADV, 298 env->CSR_BADI, env->gpr[11], cs->cpu_index, 299 env->CSR_ASID); 300 } 301 cs->exception_index = -1; 302 } 303 304 static void loongarch_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, 305 vaddr addr, unsigned size, 306 MMUAccessType access_type, 307 int mmu_idx, MemTxAttrs attrs, 308 MemTxResult response, 309 uintptr_t retaddr) 310 { 311 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 312 CPULoongArchState *env = &cpu->env; 313 314 if (access_type == MMU_INST_FETCH) { 315 do_raise_exception(env, EXCCODE_ADEF, retaddr); 316 } else { 317 do_raise_exception(env, EXCCODE_ADEM, retaddr); 318 } 319 } 320 321 static bool loongarch_cpu_exec_interrupt(CPUState *cs, int interrupt_request) 322 { 323 if (interrupt_request & CPU_INTERRUPT_HARD) { 324 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 325 CPULoongArchState *env = &cpu->env; 326 327 if (cpu_loongarch_hw_interrupts_enabled(env) && 328 cpu_loongarch_hw_interrupts_pending(env)) { 329 /* Raise it */ 330 cs->exception_index = EXCCODE_INT; 331 loongarch_cpu_do_interrupt(cs); 332 return true; 333 } 334 } 335 return false; 336 } 337 #endif 338 339 static void loongarch_cpu_synchronize_from_tb(CPUState *cs, 340 const TranslationBlock *tb) 341 { 342 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 343 CPULoongArchState *env = &cpu->env; 344 345 tcg_debug_assert(!(cs->tcg_cflags & CF_PCREL)); 346 set_pc(env, tb->pc); 347 } 348 349 static void loongarch_restore_state_to_opc(CPUState *cs, 350 const TranslationBlock *tb, 351 const uint64_t *data) 352 { 353 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 354 CPULoongArchState *env = &cpu->env; 355 356 set_pc(env, data[0]); 357 } 358 #endif /* CONFIG_TCG */ 359 360 static bool loongarch_cpu_has_work(CPUState *cs) 361 { 362 #ifdef CONFIG_USER_ONLY 363 return true; 364 #else 365 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 366 CPULoongArchState *env = &cpu->env; 367 bool has_work = false; 368 369 if ((cs->interrupt_request & CPU_INTERRUPT_HARD) && 370 cpu_loongarch_hw_interrupts_pending(env)) { 371 has_work = true; 372 } 373 374 return has_work; 375 #endif 376 } 377 378 static void loongarch_la464_initfn(Object *obj) 379 { 380 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 381 CPULoongArchState *env = &cpu->env; 382 int i; 383 384 for (i = 0; i < 21; i++) { 385 env->cpucfg[i] = 0x0; 386 } 387 388 cpu->dtb_compatible = "loongarch,Loongson-3A5000"; 389 env->cpucfg[0] = 0x14c010; /* PRID */ 390 391 uint32_t data = 0; 392 data = FIELD_DP32(data, CPUCFG1, ARCH, 2); 393 data = FIELD_DP32(data, CPUCFG1, PGMMU, 1); 394 data = FIELD_DP32(data, CPUCFG1, IOCSR, 1); 395 data = FIELD_DP32(data, CPUCFG1, PALEN, 0x2f); 396 data = FIELD_DP32(data, CPUCFG1, VALEN, 0x2f); 397 data = FIELD_DP32(data, CPUCFG1, UAL, 1); 398 data = FIELD_DP32(data, CPUCFG1, RI, 1); 399 data = FIELD_DP32(data, CPUCFG1, EP, 1); 400 data = FIELD_DP32(data, CPUCFG1, RPLV, 1); 401 data = FIELD_DP32(data, CPUCFG1, HP, 1); 402 data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1); 403 env->cpucfg[1] = data; 404 405 data = 0; 406 data = FIELD_DP32(data, CPUCFG2, FP, 1); 407 data = FIELD_DP32(data, CPUCFG2, FP_SP, 1); 408 data = FIELD_DP32(data, CPUCFG2, FP_DP, 1); 409 data = FIELD_DP32(data, CPUCFG2, FP_VER, 1); 410 data = FIELD_DP32(data, CPUCFG2, LSX, 1), 411 data = FIELD_DP32(data, CPUCFG2, LASX, 1), 412 data = FIELD_DP32(data, CPUCFG2, LLFTP, 1); 413 data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1); 414 data = FIELD_DP32(data, CPUCFG2, LSPW, 1); 415 data = FIELD_DP32(data, CPUCFG2, LAM, 1); 416 env->cpucfg[2] = data; 417 418 env->cpucfg[4] = 100 * 1000 * 1000; /* Crystal frequency */ 419 420 data = 0; 421 data = FIELD_DP32(data, CPUCFG5, CC_MUL, 1); 422 data = FIELD_DP32(data, CPUCFG5, CC_DIV, 1); 423 env->cpucfg[5] = data; 424 425 data = 0; 426 data = FIELD_DP32(data, CPUCFG16, L1_IUPRE, 1); 427 data = FIELD_DP32(data, CPUCFG16, L1_DPRE, 1); 428 data = FIELD_DP32(data, CPUCFG16, L2_IUPRE, 1); 429 data = FIELD_DP32(data, CPUCFG16, L2_IUUNIFY, 1); 430 data = FIELD_DP32(data, CPUCFG16, L2_IUPRIV, 1); 431 data = FIELD_DP32(data, CPUCFG16, L3_IUPRE, 1); 432 data = FIELD_DP32(data, CPUCFG16, L3_IUUNIFY, 1); 433 data = FIELD_DP32(data, CPUCFG16, L3_IUINCL, 1); 434 env->cpucfg[16] = data; 435 436 data = 0; 437 data = FIELD_DP32(data, CPUCFG17, L1IU_WAYS, 3); 438 data = FIELD_DP32(data, CPUCFG17, L1IU_SETS, 8); 439 data = FIELD_DP32(data, CPUCFG17, L1IU_SIZE, 6); 440 env->cpucfg[17] = data; 441 442 data = 0; 443 data = FIELD_DP32(data, CPUCFG18, L1D_WAYS, 3); 444 data = FIELD_DP32(data, CPUCFG18, L1D_SETS, 8); 445 data = FIELD_DP32(data, CPUCFG18, L1D_SIZE, 6); 446 env->cpucfg[18] = data; 447 448 data = 0; 449 data = FIELD_DP32(data, CPUCFG19, L2IU_WAYS, 15); 450 data = FIELD_DP32(data, CPUCFG19, L2IU_SETS, 8); 451 data = FIELD_DP32(data, CPUCFG19, L2IU_SIZE, 6); 452 env->cpucfg[19] = data; 453 454 data = 0; 455 data = FIELD_DP32(data, CPUCFG20, L3IU_WAYS, 15); 456 data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 14); 457 data = FIELD_DP32(data, CPUCFG20, L3IU_SIZE, 6); 458 env->cpucfg[20] = data; 459 460 env->CSR_ASID = FIELD_DP64(0, CSR_ASID, ASIDBITS, 0xa); 461 loongarch_cpu_post_init(obj); 462 } 463 464 static void loongarch_la132_initfn(Object *obj) 465 { 466 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 467 CPULoongArchState *env = &cpu->env; 468 469 int i; 470 471 for (i = 0; i < 21; i++) { 472 env->cpucfg[i] = 0x0; 473 } 474 475 cpu->dtb_compatible = "loongarch,Loongson-1C103"; 476 env->cpucfg[0] = 0x148042; /* PRID */ 477 478 uint32_t data = 0; 479 data = FIELD_DP32(data, CPUCFG1, ARCH, 1); /* LA32 */ 480 data = FIELD_DP32(data, CPUCFG1, PGMMU, 1); 481 data = FIELD_DP32(data, CPUCFG1, IOCSR, 1); 482 data = FIELD_DP32(data, CPUCFG1, PALEN, 0x1f); /* 32 bits */ 483 data = FIELD_DP32(data, CPUCFG1, VALEN, 0x1f); /* 32 bits */ 484 data = FIELD_DP32(data, CPUCFG1, UAL, 1); 485 data = FIELD_DP32(data, CPUCFG1, RI, 0); 486 data = FIELD_DP32(data, CPUCFG1, EP, 0); 487 data = FIELD_DP32(data, CPUCFG1, RPLV, 0); 488 data = FIELD_DP32(data, CPUCFG1, HP, 1); 489 data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1); 490 env->cpucfg[1] = data; 491 } 492 493 static void loongarch_max_initfn(Object *obj) 494 { 495 /* '-cpu max' for TCG: we use cpu la464. */ 496 loongarch_la464_initfn(obj); 497 } 498 499 static void loongarch_cpu_reset_hold(Object *obj) 500 { 501 CPUState *cs = CPU(obj); 502 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 503 LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(cpu); 504 CPULoongArchState *env = &cpu->env; 505 506 if (lacc->parent_phases.hold) { 507 lacc->parent_phases.hold(obj); 508 } 509 510 env->fcsr0_mask = FCSR0_M1 | FCSR0_M2 | FCSR0_M3; 511 env->fcsr0 = 0x0; 512 513 int n; 514 /* Set csr registers value after reset */ 515 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0); 516 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0); 517 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1); 518 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0); 519 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATF, 1); 520 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATM, 1); 521 522 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, FPE, 0); 523 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, SXE, 0); 524 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, ASXE, 0); 525 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, BTE, 0); 526 527 env->CSR_MISC = 0; 528 529 env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, VS, 0); 530 env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, LIE, 0); 531 532 env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2)); 533 env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0); 534 env->CSR_CPUID = cs->cpu_index; 535 env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0); 536 env->CSR_LLBCTL = FIELD_DP64(env->CSR_LLBCTL, CSR_LLBCTL, KLO, 0); 537 env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0); 538 env->CSR_MERRCTL = FIELD_DP64(env->CSR_MERRCTL, CSR_MERRCTL, ISMERR, 0); 539 env->CSR_TID = cs->cpu_index; 540 541 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, TLB_TYPE, 2); 542 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, MTLB_ENTRY, 63); 543 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_WAYS, 7); 544 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS, 8); 545 546 for (n = 0; n < 4; n++) { 547 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV0, 0); 548 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV1, 0); 549 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV2, 0); 550 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV3, 0); 551 } 552 553 #ifndef CONFIG_USER_ONLY 554 env->pc = 0x1c000000; 555 memset(env->tlb, 0, sizeof(env->tlb)); 556 if (kvm_enabled()) { 557 kvm_arch_reset_vcpu(env); 558 } 559 #endif 560 561 #ifdef CONFIG_TCG 562 restore_fp_status(env); 563 #endif 564 cs->exception_index = -1; 565 } 566 567 static void loongarch_cpu_disas_set_info(CPUState *s, disassemble_info *info) 568 { 569 info->print_insn = print_insn_loongarch; 570 } 571 572 static void loongarch_cpu_realizefn(DeviceState *dev, Error **errp) 573 { 574 CPUState *cs = CPU(dev); 575 LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(dev); 576 Error *local_err = NULL; 577 578 cpu_exec_realizefn(cs, &local_err); 579 if (local_err != NULL) { 580 error_propagate(errp, local_err); 581 return; 582 } 583 584 loongarch_cpu_register_gdb_regs_for_features(cs); 585 586 cpu_reset(cs); 587 qemu_init_vcpu(cs); 588 589 lacc->parent_realize(dev, errp); 590 } 591 592 static bool loongarch_get_lsx(Object *obj, Error **errp) 593 { 594 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 595 bool ret; 596 597 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { 598 ret = true; 599 } else { 600 ret = false; 601 } 602 return ret; 603 } 604 605 static void loongarch_set_lsx(Object *obj, bool value, Error **errp) 606 { 607 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 608 609 if (value) { 610 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 1); 611 } else { 612 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 0); 613 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 0); 614 } 615 } 616 617 static bool loongarch_get_lasx(Object *obj, Error **errp) 618 { 619 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 620 bool ret; 621 622 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LASX)) { 623 ret = true; 624 } else { 625 ret = false; 626 } 627 return ret; 628 } 629 630 static void loongarch_set_lasx(Object *obj, bool value, Error **errp) 631 { 632 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 633 634 if (value) { 635 if (!FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { 636 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 1); 637 } 638 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 1); 639 } else { 640 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 0); 641 } 642 } 643 644 void loongarch_cpu_post_init(Object *obj) 645 { 646 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 647 648 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { 649 object_property_add_bool(obj, "lsx", loongarch_get_lsx, 650 loongarch_set_lsx); 651 } 652 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LASX)) { 653 object_property_add_bool(obj, "lasx", loongarch_get_lasx, 654 loongarch_set_lasx); 655 } 656 } 657 658 static void loongarch_cpu_init(Object *obj) 659 { 660 #ifndef CONFIG_USER_ONLY 661 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 662 663 qdev_init_gpio_in(DEVICE(cpu), loongarch_cpu_set_irq, N_IRQS); 664 #ifdef CONFIG_TCG 665 timer_init_ns(&cpu->timer, QEMU_CLOCK_VIRTUAL, 666 &loongarch_constant_timer_cb, cpu); 667 #endif 668 #endif 669 } 670 671 static ObjectClass *loongarch_cpu_class_by_name(const char *cpu_model) 672 { 673 ObjectClass *oc; 674 675 oc = object_class_by_name(cpu_model); 676 if (!oc) { 677 g_autofree char *typename 678 = g_strdup_printf(LOONGARCH_CPU_TYPE_NAME("%s"), cpu_model); 679 oc = object_class_by_name(typename); 680 } 681 682 return oc; 683 } 684 685 void loongarch_cpu_dump_state(CPUState *cs, FILE *f, int flags) 686 { 687 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 688 CPULoongArchState *env = &cpu->env; 689 int i; 690 691 qemu_fprintf(f, " PC=%016" PRIx64 " ", env->pc); 692 qemu_fprintf(f, " FCSR0 0x%08x fp_status 0x%02x\n", env->fcsr0, 693 get_float_exception_flags(&env->fp_status)); 694 695 /* gpr */ 696 for (i = 0; i < 32; i++) { 697 if ((i & 3) == 0) { 698 qemu_fprintf(f, " GPR%02d:", i); 699 } 700 qemu_fprintf(f, " %s %016" PRIx64, regnames[i], env->gpr[i]); 701 if ((i & 3) == 3) { 702 qemu_fprintf(f, "\n"); 703 } 704 } 705 706 qemu_fprintf(f, "CRMD=%016" PRIx64 "\n", env->CSR_CRMD); 707 qemu_fprintf(f, "PRMD=%016" PRIx64 "\n", env->CSR_PRMD); 708 qemu_fprintf(f, "EUEN=%016" PRIx64 "\n", env->CSR_EUEN); 709 qemu_fprintf(f, "ESTAT=%016" PRIx64 "\n", env->CSR_ESTAT); 710 qemu_fprintf(f, "ERA=%016" PRIx64 "\n", env->CSR_ERA); 711 qemu_fprintf(f, "BADV=%016" PRIx64 "\n", env->CSR_BADV); 712 qemu_fprintf(f, "BADI=%016" PRIx64 "\n", env->CSR_BADI); 713 qemu_fprintf(f, "EENTRY=%016" PRIx64 "\n", env->CSR_EENTRY); 714 qemu_fprintf(f, "PRCFG1=%016" PRIx64 ", PRCFG2=%016" PRIx64 "," 715 " PRCFG3=%016" PRIx64 "\n", 716 env->CSR_PRCFG1, env->CSR_PRCFG3, env->CSR_PRCFG3); 717 qemu_fprintf(f, "TLBRENTRY=%016" PRIx64 "\n", env->CSR_TLBRENTRY); 718 qemu_fprintf(f, "TLBRBADV=%016" PRIx64 "\n", env->CSR_TLBRBADV); 719 qemu_fprintf(f, "TLBRERA=%016" PRIx64 "\n", env->CSR_TLBRERA); 720 qemu_fprintf(f, "TCFG=%016" PRIx64 "\n", env->CSR_TCFG); 721 qemu_fprintf(f, "TVAL=%016" PRIx64 "\n", env->CSR_TVAL); 722 723 /* fpr */ 724 if (flags & CPU_DUMP_FPU) { 725 for (i = 0; i < 32; i++) { 726 qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i].vreg.D(0)); 727 if ((i & 3) == 3) { 728 qemu_fprintf(f, "\n"); 729 } 730 } 731 } 732 } 733 734 #ifdef CONFIG_TCG 735 #include "hw/core/tcg-cpu-ops.h" 736 737 static const TCGCPUOps loongarch_tcg_ops = { 738 .initialize = loongarch_translate_init, 739 .synchronize_from_tb = loongarch_cpu_synchronize_from_tb, 740 .restore_state_to_opc = loongarch_restore_state_to_opc, 741 742 #ifndef CONFIG_USER_ONLY 743 .tlb_fill = loongarch_cpu_tlb_fill, 744 .cpu_exec_interrupt = loongarch_cpu_exec_interrupt, 745 .do_interrupt = loongarch_cpu_do_interrupt, 746 .do_transaction_failed = loongarch_cpu_do_transaction_failed, 747 #endif 748 }; 749 #endif /* CONFIG_TCG */ 750 751 #ifndef CONFIG_USER_ONLY 752 #include "hw/core/sysemu-cpu-ops.h" 753 754 static const struct SysemuCPUOps loongarch_sysemu_ops = { 755 .get_phys_page_debug = loongarch_cpu_get_phys_page_debug, 756 }; 757 758 static int64_t loongarch_cpu_get_arch_id(CPUState *cs) 759 { 760 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 761 762 return cpu->phy_id; 763 } 764 #endif 765 766 static void loongarch_cpu_class_init(ObjectClass *c, void *data) 767 { 768 LoongArchCPUClass *lacc = LOONGARCH_CPU_CLASS(c); 769 CPUClass *cc = CPU_CLASS(c); 770 DeviceClass *dc = DEVICE_CLASS(c); 771 ResettableClass *rc = RESETTABLE_CLASS(c); 772 773 device_class_set_parent_realize(dc, loongarch_cpu_realizefn, 774 &lacc->parent_realize); 775 resettable_class_set_parent_phases(rc, NULL, loongarch_cpu_reset_hold, NULL, 776 &lacc->parent_phases); 777 778 cc->class_by_name = loongarch_cpu_class_by_name; 779 cc->has_work = loongarch_cpu_has_work; 780 cc->dump_state = loongarch_cpu_dump_state; 781 cc->set_pc = loongarch_cpu_set_pc; 782 cc->get_pc = loongarch_cpu_get_pc; 783 #ifndef CONFIG_USER_ONLY 784 cc->get_arch_id = loongarch_cpu_get_arch_id; 785 dc->vmsd = &vmstate_loongarch_cpu; 786 cc->sysemu_ops = &loongarch_sysemu_ops; 787 #endif 788 cc->disas_set_info = loongarch_cpu_disas_set_info; 789 cc->gdb_read_register = loongarch_cpu_gdb_read_register; 790 cc->gdb_write_register = loongarch_cpu_gdb_write_register; 791 cc->gdb_stop_before_watchpoint = true; 792 793 #ifdef CONFIG_TCG 794 cc->tcg_ops = &loongarch_tcg_ops; 795 #endif 796 } 797 798 static const gchar *loongarch32_gdb_arch_name(CPUState *cs) 799 { 800 return "loongarch32"; 801 } 802 803 static void loongarch32_cpu_class_init(ObjectClass *c, void *data) 804 { 805 CPUClass *cc = CPU_CLASS(c); 806 807 cc->gdb_num_core_regs = 35; 808 cc->gdb_core_xml_file = "loongarch-base32.xml"; 809 cc->gdb_arch_name = loongarch32_gdb_arch_name; 810 } 811 812 static const gchar *loongarch64_gdb_arch_name(CPUState *cs) 813 { 814 return "loongarch64"; 815 } 816 817 static void loongarch64_cpu_class_init(ObjectClass *c, void *data) 818 { 819 CPUClass *cc = CPU_CLASS(c); 820 821 cc->gdb_num_core_regs = 35; 822 cc->gdb_core_xml_file = "loongarch-base64.xml"; 823 cc->gdb_arch_name = loongarch64_gdb_arch_name; 824 } 825 826 #define DEFINE_LOONGARCH_CPU_TYPE(size, model, initfn) \ 827 { \ 828 .parent = TYPE_LOONGARCH##size##_CPU, \ 829 .instance_init = initfn, \ 830 .name = LOONGARCH_CPU_TYPE_NAME(model), \ 831 } 832 833 static const TypeInfo loongarch_cpu_type_infos[] = { 834 { 835 .name = TYPE_LOONGARCH_CPU, 836 .parent = TYPE_CPU, 837 .instance_size = sizeof(LoongArchCPU), 838 .instance_align = __alignof(LoongArchCPU), 839 .instance_init = loongarch_cpu_init, 840 841 .abstract = true, 842 .class_size = sizeof(LoongArchCPUClass), 843 .class_init = loongarch_cpu_class_init, 844 }, 845 { 846 .name = TYPE_LOONGARCH32_CPU, 847 .parent = TYPE_LOONGARCH_CPU, 848 849 .abstract = true, 850 .class_init = loongarch32_cpu_class_init, 851 }, 852 { 853 .name = TYPE_LOONGARCH64_CPU, 854 .parent = TYPE_LOONGARCH_CPU, 855 856 .abstract = true, 857 .class_init = loongarch64_cpu_class_init, 858 }, 859 DEFINE_LOONGARCH_CPU_TYPE(64, "la464", loongarch_la464_initfn), 860 DEFINE_LOONGARCH_CPU_TYPE(32, "la132", loongarch_la132_initfn), 861 DEFINE_LOONGARCH_CPU_TYPE(64, "max", loongarch_max_initfn), 862 }; 863 864 DEFINE_TYPES(loongarch_cpu_type_infos) 865