1 #include "qemu/osdep.h" 2 #include "qemu/cutils.h" 3 #include "qapi/error.h" 4 #include "sysemu/hw_accel.h" 5 #include "sysemu/runstate.h" 6 #include "qemu/log.h" 7 #include "qemu/main-loop.h" 8 #include "qemu/module.h" 9 #include "qemu/error-report.h" 10 #include "exec/exec-all.h" 11 #include "exec/tb-flush.h" 12 #include "helper_regs.h" 13 #include "hw/ppc/ppc.h" 14 #include "hw/ppc/spapr.h" 15 #include "hw/ppc/spapr_cpu_core.h" 16 #include "hw/ppc/spapr_nested.h" 17 #include "mmu-hash64.h" 18 #include "cpu-models.h" 19 #include "trace.h" 20 #include "kvm_ppc.h" 21 #include "hw/ppc/fdt.h" 22 #include "hw/ppc/spapr_ovec.h" 23 #include "hw/ppc/spapr_numa.h" 24 #include "mmu-book3s-v3.h" 25 #include "hw/mem/memory-device.h" 26 27 bool is_ram_address(SpaprMachineState *spapr, hwaddr addr) 28 { 29 MachineState *machine = MACHINE(spapr); 30 DeviceMemoryState *dms = machine->device_memory; 31 32 if (addr < machine->ram_size) { 33 return true; 34 } 35 if (dms && (addr >= dms->base) 36 && ((addr - dms->base) < memory_region_size(&dms->mr))) { 37 return true; 38 } 39 40 return false; 41 } 42 43 /* Convert a return code from the KVM ioctl()s implementing resize HPT 44 * into a PAPR hypercall return code */ 45 static target_ulong resize_hpt_convert_rc(int ret) 46 { 47 if (ret >= 100000) { 48 return H_LONG_BUSY_ORDER_100_SEC; 49 } else if (ret >= 10000) { 50 return H_LONG_BUSY_ORDER_10_SEC; 51 } else if (ret >= 1000) { 52 return H_LONG_BUSY_ORDER_1_SEC; 53 } else if (ret >= 100) { 54 return H_LONG_BUSY_ORDER_100_MSEC; 55 } else if (ret >= 10) { 56 return H_LONG_BUSY_ORDER_10_MSEC; 57 } else if (ret > 0) { 58 return H_LONG_BUSY_ORDER_1_MSEC; 59 } 60 61 switch (ret) { 62 case 0: 63 return H_SUCCESS; 64 case -EPERM: 65 return H_AUTHORITY; 66 case -EINVAL: 67 return H_PARAMETER; 68 case -ENXIO: 69 return H_CLOSED; 70 case -ENOSPC: 71 return H_PTEG_FULL; 72 case -EBUSY: 73 return H_BUSY; 74 case -ENOMEM: 75 return H_NO_MEM; 76 default: 77 return H_HARDWARE; 78 } 79 } 80 81 static target_ulong h_resize_hpt_prepare(PowerPCCPU *cpu, 82 SpaprMachineState *spapr, 83 target_ulong opcode, 84 target_ulong *args) 85 { 86 target_ulong flags = args[0]; 87 int shift = args[1]; 88 uint64_t current_ram_size; 89 int rc; 90 91 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { 92 return H_AUTHORITY; 93 } 94 95 if (!spapr->htab_shift) { 96 /* Radix guest, no HPT */ 97 return H_NOT_AVAILABLE; 98 } 99 100 trace_spapr_h_resize_hpt_prepare(flags, shift); 101 102 if (flags != 0) { 103 return H_PARAMETER; 104 } 105 106 if (shift && ((shift < 18) || (shift > 46))) { 107 return H_PARAMETER; 108 } 109 110 current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); 111 112 /* We only allow the guest to allocate an HPT one order above what 113 * we'd normally give them (to stop a small guest claiming a huge 114 * chunk of resources in the HPT */ 115 if (shift > (spapr_hpt_shift_for_ramsize(current_ram_size) + 1)) { 116 return H_RESOURCE; 117 } 118 119 rc = kvmppc_resize_hpt_prepare(cpu, flags, shift); 120 if (rc != -ENOSYS) { 121 return resize_hpt_convert_rc(rc); 122 } 123 124 if (kvm_enabled()) { 125 return H_HARDWARE; 126 } 127 128 return softmmu_resize_hpt_prepare(cpu, spapr, shift); 129 } 130 131 static void do_push_sregs_to_kvm_pr(CPUState *cs, run_on_cpu_data data) 132 { 133 int ret; 134 135 cpu_synchronize_state(cs); 136 137 ret = kvmppc_put_books_sregs(POWERPC_CPU(cs)); 138 if (ret < 0) { 139 error_report("failed to push sregs to KVM: %s", strerror(-ret)); 140 exit(1); 141 } 142 } 143 144 void push_sregs_to_kvm_pr(SpaprMachineState *spapr) 145 { 146 CPUState *cs; 147 148 /* 149 * This is a hack for the benefit of KVM PR - it abuses the SDR1 150 * slot in kvm_sregs to communicate the userspace address of the 151 * HPT 152 */ 153 if (!kvm_enabled() || !spapr->htab) { 154 return; 155 } 156 157 CPU_FOREACH(cs) { 158 run_on_cpu(cs, do_push_sregs_to_kvm_pr, RUN_ON_CPU_NULL); 159 } 160 } 161 162 static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, 163 SpaprMachineState *spapr, 164 target_ulong opcode, 165 target_ulong *args) 166 { 167 target_ulong flags = args[0]; 168 target_ulong shift = args[1]; 169 int rc; 170 171 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { 172 return H_AUTHORITY; 173 } 174 175 if (!spapr->htab_shift) { 176 /* Radix guest, no HPT */ 177 return H_NOT_AVAILABLE; 178 } 179 180 trace_spapr_h_resize_hpt_commit(flags, shift); 181 182 rc = kvmppc_resize_hpt_commit(cpu, flags, shift); 183 if (rc != -ENOSYS) { 184 rc = resize_hpt_convert_rc(rc); 185 if (rc == H_SUCCESS) { 186 /* Need to set the new htab_shift in the machine state */ 187 spapr->htab_shift = shift; 188 } 189 return rc; 190 } 191 192 if (kvm_enabled()) { 193 return H_HARDWARE; 194 } 195 196 return softmmu_resize_hpt_commit(cpu, spapr, flags, shift); 197 } 198 199 200 201 static target_ulong h_set_sprg0(PowerPCCPU *cpu, SpaprMachineState *spapr, 202 target_ulong opcode, target_ulong *args) 203 { 204 cpu_synchronize_state(CPU(cpu)); 205 cpu->env.spr[SPR_SPRG0] = args[0]; 206 207 return H_SUCCESS; 208 } 209 210 static target_ulong h_set_dabr(PowerPCCPU *cpu, SpaprMachineState *spapr, 211 target_ulong opcode, target_ulong *args) 212 { 213 if (!ppc_has_spr(cpu, SPR_DABR)) { 214 return H_HARDWARE; /* DABR register not available */ 215 } 216 cpu_synchronize_state(CPU(cpu)); 217 218 if (ppc_has_spr(cpu, SPR_DABRX)) { 219 cpu->env.spr[SPR_DABRX] = 0x3; /* Use Problem and Privileged state */ 220 } else if (!(args[0] & 0x4)) { /* Breakpoint Translation set? */ 221 return H_RESERVED_DABR; 222 } 223 224 cpu->env.spr[SPR_DABR] = args[0]; 225 return H_SUCCESS; 226 } 227 228 static target_ulong h_set_xdabr(PowerPCCPU *cpu, SpaprMachineState *spapr, 229 target_ulong opcode, target_ulong *args) 230 { 231 target_ulong dabrx = args[1]; 232 233 if (!ppc_has_spr(cpu, SPR_DABR) || !ppc_has_spr(cpu, SPR_DABRX)) { 234 return H_HARDWARE; 235 } 236 237 if ((dabrx & ~0xfULL) != 0 || (dabrx & H_DABRX_HYPERVISOR) != 0 238 || (dabrx & (H_DABRX_KERNEL | H_DABRX_USER)) == 0) { 239 return H_PARAMETER; 240 } 241 242 cpu_synchronize_state(CPU(cpu)); 243 cpu->env.spr[SPR_DABRX] = dabrx; 244 cpu->env.spr[SPR_DABR] = args[0]; 245 246 return H_SUCCESS; 247 } 248 249 static target_ulong h_page_init(PowerPCCPU *cpu, SpaprMachineState *spapr, 250 target_ulong opcode, target_ulong *args) 251 { 252 target_ulong flags = args[0]; 253 hwaddr dst = args[1]; 254 hwaddr src = args[2]; 255 hwaddr len = TARGET_PAGE_SIZE; 256 uint8_t *pdst, *psrc; 257 target_long ret = H_SUCCESS; 258 259 if (flags & ~(H_ICACHE_SYNCHRONIZE | H_ICACHE_INVALIDATE 260 | H_COPY_PAGE | H_ZERO_PAGE)) { 261 qemu_log_mask(LOG_UNIMP, "h_page_init: Bad flags (" TARGET_FMT_lx "\n", 262 flags); 263 return H_PARAMETER; 264 } 265 266 /* Map-in destination */ 267 if (!is_ram_address(spapr, dst) || (dst & ~TARGET_PAGE_MASK) != 0) { 268 return H_PARAMETER; 269 } 270 pdst = cpu_physical_memory_map(dst, &len, true); 271 if (!pdst || len != TARGET_PAGE_SIZE) { 272 return H_PARAMETER; 273 } 274 275 if (flags & H_COPY_PAGE) { 276 /* Map-in source, copy to destination, and unmap source again */ 277 if (!is_ram_address(spapr, src) || (src & ~TARGET_PAGE_MASK) != 0) { 278 ret = H_PARAMETER; 279 goto unmap_out; 280 } 281 psrc = cpu_physical_memory_map(src, &len, false); 282 if (!psrc || len != TARGET_PAGE_SIZE) { 283 ret = H_PARAMETER; 284 goto unmap_out; 285 } 286 memcpy(pdst, psrc, len); 287 cpu_physical_memory_unmap(psrc, len, 0, len); 288 } else if (flags & H_ZERO_PAGE) { 289 memset(pdst, 0, len); /* Just clear the destination page */ 290 } 291 292 if (kvm_enabled() && (flags & H_ICACHE_SYNCHRONIZE) != 0) { 293 kvmppc_dcbst_range(cpu, pdst, len); 294 } 295 if (flags & (H_ICACHE_SYNCHRONIZE | H_ICACHE_INVALIDATE)) { 296 if (kvm_enabled()) { 297 kvmppc_icbi_range(cpu, pdst, len); 298 } else { 299 tb_flush(CPU(cpu)); 300 } 301 } 302 303 unmap_out: 304 cpu_physical_memory_unmap(pdst, TARGET_PAGE_SIZE, 1, len); 305 return ret; 306 } 307 308 #define FLAGS_REGISTER_VPA 0x0000200000000000ULL 309 #define FLAGS_REGISTER_DTL 0x0000400000000000ULL 310 #define FLAGS_REGISTER_SLBSHADOW 0x0000600000000000ULL 311 #define FLAGS_DEREGISTER_VPA 0x0000a00000000000ULL 312 #define FLAGS_DEREGISTER_DTL 0x0000c00000000000ULL 313 #define FLAGS_DEREGISTER_SLBSHADOW 0x0000e00000000000ULL 314 315 static target_ulong register_vpa(PowerPCCPU *cpu, target_ulong vpa) 316 { 317 CPUState *cs = CPU(cpu); 318 CPUPPCState *env = &cpu->env; 319 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 320 uint16_t size; 321 uint8_t tmp; 322 323 if (vpa == 0) { 324 hcall_dprintf("Can't cope with registering a VPA at logical 0\n"); 325 return H_HARDWARE; 326 } 327 328 if (vpa % env->dcache_line_size) { 329 return H_PARAMETER; 330 } 331 /* FIXME: bounds check the address */ 332 333 size = lduw_be_phys(cs->as, vpa + 0x4); 334 335 if (size < VPA_MIN_SIZE) { 336 return H_PARAMETER; 337 } 338 339 /* VPA is not allowed to cross a page boundary */ 340 if ((vpa / 4096) != ((vpa + size - 1) / 4096)) { 341 return H_PARAMETER; 342 } 343 344 spapr_cpu->vpa_addr = vpa; 345 346 tmp = ldub_phys(cs->as, spapr_cpu->vpa_addr + VPA_SHARED_PROC_OFFSET); 347 tmp |= VPA_SHARED_PROC_VAL; 348 stb_phys(cs->as, spapr_cpu->vpa_addr + VPA_SHARED_PROC_OFFSET, tmp); 349 350 return H_SUCCESS; 351 } 352 353 static target_ulong deregister_vpa(PowerPCCPU *cpu, target_ulong vpa) 354 { 355 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 356 357 if (spapr_cpu->slb_shadow_addr) { 358 return H_RESOURCE; 359 } 360 361 if (spapr_cpu->dtl_addr) { 362 return H_RESOURCE; 363 } 364 365 spapr_cpu->vpa_addr = 0; 366 return H_SUCCESS; 367 } 368 369 static target_ulong register_slb_shadow(PowerPCCPU *cpu, target_ulong addr) 370 { 371 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 372 uint32_t size; 373 374 if (addr == 0) { 375 hcall_dprintf("Can't cope with SLB shadow at logical 0\n"); 376 return H_HARDWARE; 377 } 378 379 size = ldl_be_phys(CPU(cpu)->as, addr + 0x4); 380 if (size < 0x8) { 381 return H_PARAMETER; 382 } 383 384 if ((addr / 4096) != ((addr + size - 1) / 4096)) { 385 return H_PARAMETER; 386 } 387 388 if (!spapr_cpu->vpa_addr) { 389 return H_RESOURCE; 390 } 391 392 spapr_cpu->slb_shadow_addr = addr; 393 spapr_cpu->slb_shadow_size = size; 394 395 return H_SUCCESS; 396 } 397 398 static target_ulong deregister_slb_shadow(PowerPCCPU *cpu, target_ulong addr) 399 { 400 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 401 402 spapr_cpu->slb_shadow_addr = 0; 403 spapr_cpu->slb_shadow_size = 0; 404 return H_SUCCESS; 405 } 406 407 static target_ulong register_dtl(PowerPCCPU *cpu, target_ulong addr) 408 { 409 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 410 uint32_t size; 411 412 if (addr == 0) { 413 hcall_dprintf("Can't cope with DTL at logical 0\n"); 414 return H_HARDWARE; 415 } 416 417 size = ldl_be_phys(CPU(cpu)->as, addr + 0x4); 418 419 if (size < 48) { 420 return H_PARAMETER; 421 } 422 423 if (!spapr_cpu->vpa_addr) { 424 return H_RESOURCE; 425 } 426 427 spapr_cpu->dtl_addr = addr; 428 spapr_cpu->dtl_size = size; 429 430 return H_SUCCESS; 431 } 432 433 static target_ulong deregister_dtl(PowerPCCPU *cpu, target_ulong addr) 434 { 435 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 436 437 spapr_cpu->dtl_addr = 0; 438 spapr_cpu->dtl_size = 0; 439 440 return H_SUCCESS; 441 } 442 443 static target_ulong h_register_vpa(PowerPCCPU *cpu, SpaprMachineState *spapr, 444 target_ulong opcode, target_ulong *args) 445 { 446 target_ulong flags = args[0]; 447 target_ulong procno = args[1]; 448 target_ulong vpa = args[2]; 449 target_ulong ret = H_PARAMETER; 450 PowerPCCPU *tcpu; 451 452 tcpu = spapr_find_cpu(procno); 453 if (!tcpu) { 454 return H_PARAMETER; 455 } 456 457 switch (flags) { 458 case FLAGS_REGISTER_VPA: 459 ret = register_vpa(tcpu, vpa); 460 break; 461 462 case FLAGS_DEREGISTER_VPA: 463 ret = deregister_vpa(tcpu, vpa); 464 break; 465 466 case FLAGS_REGISTER_SLBSHADOW: 467 ret = register_slb_shadow(tcpu, vpa); 468 break; 469 470 case FLAGS_DEREGISTER_SLBSHADOW: 471 ret = deregister_slb_shadow(tcpu, vpa); 472 break; 473 474 case FLAGS_REGISTER_DTL: 475 ret = register_dtl(tcpu, vpa); 476 break; 477 478 case FLAGS_DEREGISTER_DTL: 479 ret = deregister_dtl(tcpu, vpa); 480 break; 481 } 482 483 return ret; 484 } 485 486 static target_ulong h_cede(PowerPCCPU *cpu, SpaprMachineState *spapr, 487 target_ulong opcode, target_ulong *args) 488 { 489 CPUPPCState *env = &cpu->env; 490 CPUState *cs = CPU(cpu); 491 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 492 493 env->msr |= (1ULL << MSR_EE); 494 hreg_compute_hflags(env); 495 ppc_maybe_interrupt(env); 496 497 if (spapr_cpu->prod) { 498 spapr_cpu->prod = false; 499 return H_SUCCESS; 500 } 501 502 if (!cpu_has_work(cs)) { 503 cs->halted = 1; 504 cs->exception_index = EXCP_HLT; 505 cs->exit_request = 1; 506 ppc_maybe_interrupt(env); 507 } 508 509 return H_SUCCESS; 510 } 511 512 /* 513 * Confer to self, aka join. Cede could use the same pattern as well, if 514 * EXCP_HLT can be changed to ECXP_HALTED. 515 */ 516 static target_ulong h_confer_self(PowerPCCPU *cpu) 517 { 518 CPUState *cs = CPU(cpu); 519 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 520 521 if (spapr_cpu->prod) { 522 spapr_cpu->prod = false; 523 return H_SUCCESS; 524 } 525 cs->halted = 1; 526 cs->exception_index = EXCP_HALTED; 527 cs->exit_request = 1; 528 ppc_maybe_interrupt(&cpu->env); 529 530 return H_SUCCESS; 531 } 532 533 static target_ulong h_join(PowerPCCPU *cpu, SpaprMachineState *spapr, 534 target_ulong opcode, target_ulong *args) 535 { 536 CPUPPCState *env = &cpu->env; 537 CPUState *cs; 538 bool last_unjoined = true; 539 540 if (env->msr & (1ULL << MSR_EE)) { 541 return H_BAD_MODE; 542 } 543 544 /* 545 * Must not join the last CPU running. Interestingly, no such restriction 546 * for H_CONFER-to-self, but that is probably not intended to be used 547 * when H_JOIN is available. 548 */ 549 CPU_FOREACH(cs) { 550 PowerPCCPU *c = POWERPC_CPU(cs); 551 CPUPPCState *e = &c->env; 552 if (c == cpu) { 553 continue; 554 } 555 556 /* Don't have a way to indicate joined, so use halted && MSR[EE]=0 */ 557 if (!cs->halted || (e->msr & (1ULL << MSR_EE))) { 558 last_unjoined = false; 559 break; 560 } 561 } 562 if (last_unjoined) { 563 return H_CONTINUE; 564 } 565 566 return h_confer_self(cpu); 567 } 568 569 static target_ulong h_confer(PowerPCCPU *cpu, SpaprMachineState *spapr, 570 target_ulong opcode, target_ulong *args) 571 { 572 target_long target = args[0]; 573 uint32_t dispatch = args[1]; 574 CPUState *cs = CPU(cpu); 575 SpaprCpuState *spapr_cpu; 576 577 /* 578 * -1 means confer to all other CPUs without dispatch counter check, 579 * otherwise it's a targeted confer. 580 */ 581 if (target != -1) { 582 PowerPCCPU *target_cpu = spapr_find_cpu(target); 583 uint32_t target_dispatch; 584 585 if (!target_cpu) { 586 return H_PARAMETER; 587 } 588 589 /* 590 * target == self is a special case, we wait until prodded, without 591 * dispatch counter check. 592 */ 593 if (cpu == target_cpu) { 594 return h_confer_self(cpu); 595 } 596 597 spapr_cpu = spapr_cpu_state(target_cpu); 598 if (!spapr_cpu->vpa_addr || ((dispatch & 1) == 0)) { 599 return H_SUCCESS; 600 } 601 602 target_dispatch = ldl_be_phys(cs->as, 603 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 604 if (target_dispatch != dispatch) { 605 return H_SUCCESS; 606 } 607 608 /* 609 * The targeted confer does not do anything special beyond yielding 610 * the current vCPU, but even this should be better than nothing. 611 * At least for single-threaded tcg, it gives the target a chance to 612 * run before we run again. Multi-threaded tcg does not really do 613 * anything with EXCP_YIELD yet. 614 */ 615 } 616 617 cs->exception_index = EXCP_YIELD; 618 cs->exit_request = 1; 619 cpu_loop_exit(cs); 620 621 return H_SUCCESS; 622 } 623 624 static target_ulong h_prod(PowerPCCPU *cpu, SpaprMachineState *spapr, 625 target_ulong opcode, target_ulong *args) 626 { 627 target_long target = args[0]; 628 PowerPCCPU *tcpu; 629 CPUState *cs; 630 SpaprCpuState *spapr_cpu; 631 632 tcpu = spapr_find_cpu(target); 633 cs = CPU(tcpu); 634 if (!cs) { 635 return H_PARAMETER; 636 } 637 638 spapr_cpu = spapr_cpu_state(tcpu); 639 spapr_cpu->prod = true; 640 cs->halted = 0; 641 ppc_maybe_interrupt(&cpu->env); 642 qemu_cpu_kick(cs); 643 644 return H_SUCCESS; 645 } 646 647 static target_ulong h_rtas(PowerPCCPU *cpu, SpaprMachineState *spapr, 648 target_ulong opcode, target_ulong *args) 649 { 650 target_ulong rtas_r3 = args[0]; 651 uint32_t token = rtas_ld(rtas_r3, 0); 652 uint32_t nargs = rtas_ld(rtas_r3, 1); 653 uint32_t nret = rtas_ld(rtas_r3, 2); 654 655 return spapr_rtas_call(cpu, spapr, token, nargs, rtas_r3 + 12, 656 nret, rtas_r3 + 12 + 4*nargs); 657 } 658 659 static target_ulong h_logical_load(PowerPCCPU *cpu, SpaprMachineState *spapr, 660 target_ulong opcode, target_ulong *args) 661 { 662 CPUState *cs = CPU(cpu); 663 target_ulong size = args[0]; 664 target_ulong addr = args[1]; 665 666 switch (size) { 667 case 1: 668 args[0] = ldub_phys(cs->as, addr); 669 return H_SUCCESS; 670 case 2: 671 args[0] = lduw_phys(cs->as, addr); 672 return H_SUCCESS; 673 case 4: 674 args[0] = ldl_phys(cs->as, addr); 675 return H_SUCCESS; 676 case 8: 677 args[0] = ldq_phys(cs->as, addr); 678 return H_SUCCESS; 679 } 680 return H_PARAMETER; 681 } 682 683 static target_ulong h_logical_store(PowerPCCPU *cpu, SpaprMachineState *spapr, 684 target_ulong opcode, target_ulong *args) 685 { 686 CPUState *cs = CPU(cpu); 687 688 target_ulong size = args[0]; 689 target_ulong addr = args[1]; 690 target_ulong val = args[2]; 691 692 switch (size) { 693 case 1: 694 stb_phys(cs->as, addr, val); 695 return H_SUCCESS; 696 case 2: 697 stw_phys(cs->as, addr, val); 698 return H_SUCCESS; 699 case 4: 700 stl_phys(cs->as, addr, val); 701 return H_SUCCESS; 702 case 8: 703 stq_phys(cs->as, addr, val); 704 return H_SUCCESS; 705 } 706 return H_PARAMETER; 707 } 708 709 static target_ulong h_logical_memop(PowerPCCPU *cpu, SpaprMachineState *spapr, 710 target_ulong opcode, target_ulong *args) 711 { 712 CPUState *cs = CPU(cpu); 713 714 target_ulong dst = args[0]; /* Destination address */ 715 target_ulong src = args[1]; /* Source address */ 716 target_ulong esize = args[2]; /* Element size (0=1,1=2,2=4,3=8) */ 717 target_ulong count = args[3]; /* Element count */ 718 target_ulong op = args[4]; /* 0 = copy, 1 = invert */ 719 uint64_t tmp; 720 unsigned int mask = (1 << esize) - 1; 721 int step = 1 << esize; 722 723 if (count > 0x80000000) { 724 return H_PARAMETER; 725 } 726 727 if ((dst & mask) || (src & mask) || (op > 1)) { 728 return H_PARAMETER; 729 } 730 731 if (dst >= src && dst < (src + (count << esize))) { 732 dst = dst + ((count - 1) << esize); 733 src = src + ((count - 1) << esize); 734 step = -step; 735 } 736 737 while (count--) { 738 switch (esize) { 739 case 0: 740 tmp = ldub_phys(cs->as, src); 741 break; 742 case 1: 743 tmp = lduw_phys(cs->as, src); 744 break; 745 case 2: 746 tmp = ldl_phys(cs->as, src); 747 break; 748 case 3: 749 tmp = ldq_phys(cs->as, src); 750 break; 751 default: 752 return H_PARAMETER; 753 } 754 if (op == 1) { 755 tmp = ~tmp; 756 } 757 switch (esize) { 758 case 0: 759 stb_phys(cs->as, dst, tmp); 760 break; 761 case 1: 762 stw_phys(cs->as, dst, tmp); 763 break; 764 case 2: 765 stl_phys(cs->as, dst, tmp); 766 break; 767 case 3: 768 stq_phys(cs->as, dst, tmp); 769 break; 770 } 771 dst = dst + step; 772 src = src + step; 773 } 774 775 return H_SUCCESS; 776 } 777 778 static target_ulong h_logical_icbi(PowerPCCPU *cpu, SpaprMachineState *spapr, 779 target_ulong opcode, target_ulong *args) 780 { 781 /* Nothing to do on emulation, KVM will trap this in the kernel */ 782 return H_SUCCESS; 783 } 784 785 static target_ulong h_logical_dcbf(PowerPCCPU *cpu, SpaprMachineState *spapr, 786 target_ulong opcode, target_ulong *args) 787 { 788 /* Nothing to do on emulation, KVM will trap this in the kernel */ 789 return H_SUCCESS; 790 } 791 792 static target_ulong h_set_mode_resource_le(PowerPCCPU *cpu, 793 SpaprMachineState *spapr, 794 target_ulong mflags, 795 target_ulong value1, 796 target_ulong value2) 797 { 798 if (value1) { 799 return H_P3; 800 } 801 if (value2) { 802 return H_P4; 803 } 804 805 switch (mflags) { 806 case H_SET_MODE_ENDIAN_BIG: 807 spapr_set_all_lpcrs(0, LPCR_ILE); 808 spapr_pci_switch_vga(spapr, true); 809 return H_SUCCESS; 810 811 case H_SET_MODE_ENDIAN_LITTLE: 812 spapr_set_all_lpcrs(LPCR_ILE, LPCR_ILE); 813 spapr_pci_switch_vga(spapr, false); 814 return H_SUCCESS; 815 } 816 817 return H_UNSUPPORTED_FLAG; 818 } 819 820 static target_ulong h_set_mode_resource_addr_trans_mode(PowerPCCPU *cpu, 821 SpaprMachineState *spapr, 822 target_ulong mflags, 823 target_ulong value1, 824 target_ulong value2) 825 { 826 if (value1) { 827 return H_P3; 828 } 829 830 if (value2) { 831 return H_P4; 832 } 833 834 /* 835 * AIL-1 is not architected, and AIL-2 is not supported by QEMU spapr. 836 * It is supported for faithful emulation of bare metal systems, but for 837 * compatibility concerns we leave it out of the pseries machine. 838 */ 839 if (mflags != 0 && mflags != 3) { 840 return H_UNSUPPORTED_FLAG; 841 } 842 843 if (mflags == 3) { 844 if (!spapr_get_cap(spapr, SPAPR_CAP_AIL_MODE_3)) { 845 return H_UNSUPPORTED_FLAG; 846 } 847 } 848 849 spapr_set_all_lpcrs(mflags << LPCR_AIL_SHIFT, LPCR_AIL); 850 851 return H_SUCCESS; 852 } 853 854 static target_ulong h_set_mode(PowerPCCPU *cpu, SpaprMachineState *spapr, 855 target_ulong opcode, target_ulong *args) 856 { 857 target_ulong resource = args[1]; 858 target_ulong ret = H_P2; 859 860 switch (resource) { 861 case H_SET_MODE_RESOURCE_LE: 862 ret = h_set_mode_resource_le(cpu, spapr, args[0], args[2], args[3]); 863 break; 864 case H_SET_MODE_RESOURCE_ADDR_TRANS_MODE: 865 ret = h_set_mode_resource_addr_trans_mode(cpu, spapr, args[0], 866 args[2], args[3]); 867 break; 868 } 869 870 return ret; 871 } 872 873 static target_ulong h_clean_slb(PowerPCCPU *cpu, SpaprMachineState *spapr, 874 target_ulong opcode, target_ulong *args) 875 { 876 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x"TARGET_FMT_lx"%s\n", 877 opcode, " (H_CLEAN_SLB)"); 878 return H_FUNCTION; 879 } 880 881 static target_ulong h_invalidate_pid(PowerPCCPU *cpu, SpaprMachineState *spapr, 882 target_ulong opcode, target_ulong *args) 883 { 884 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x"TARGET_FMT_lx"%s\n", 885 opcode, " (H_INVALIDATE_PID)"); 886 return H_FUNCTION; 887 } 888 889 static void spapr_check_setup_free_hpt(SpaprMachineState *spapr, 890 uint64_t patbe_old, uint64_t patbe_new) 891 { 892 /* 893 * We have 4 Options: 894 * HASH->HASH || RADIX->RADIX || NOTHING->RADIX : Do Nothing 895 * HASH->RADIX : Free HPT 896 * RADIX->HASH : Allocate HPT 897 * NOTHING->HASH : Allocate HPT 898 * Note: NOTHING implies the case where we said the guest could choose 899 * later and so assumed radix and now it's called H_REG_PROC_TBL 900 */ 901 902 if ((patbe_old & PATE1_GR) == (patbe_new & PATE1_GR)) { 903 /* We assume RADIX, so this catches all the "Do Nothing" cases */ 904 } else if (!(patbe_old & PATE1_GR)) { 905 /* HASH->RADIX : Free HPT */ 906 spapr_free_hpt(spapr); 907 } else if (!(patbe_new & PATE1_GR)) { 908 /* RADIX->HASH || NOTHING->HASH : Allocate HPT */ 909 spapr_setup_hpt(spapr); 910 } 911 return; 912 } 913 914 #define FLAGS_MASK 0x01FULL 915 #define FLAG_MODIFY 0x10 916 #define FLAG_REGISTER 0x08 917 #define FLAG_RADIX 0x04 918 #define FLAG_HASH_PROC_TBL 0x02 919 #define FLAG_GTSE 0x01 920 921 static target_ulong h_register_process_table(PowerPCCPU *cpu, 922 SpaprMachineState *spapr, 923 target_ulong opcode, 924 target_ulong *args) 925 { 926 target_ulong flags = args[0]; 927 target_ulong proc_tbl = args[1]; 928 target_ulong page_size = args[2]; 929 target_ulong table_size = args[3]; 930 target_ulong update_lpcr = 0; 931 target_ulong table_byte_size; 932 uint64_t cproc; 933 934 if (flags & ~FLAGS_MASK) { /* Check no reserved bits are set */ 935 return H_PARAMETER; 936 } 937 if (flags & FLAG_MODIFY) { 938 if (flags & FLAG_REGISTER) { 939 /* Check process table alignment */ 940 table_byte_size = 1ULL << (table_size + 12); 941 if (proc_tbl & (table_byte_size - 1)) { 942 qemu_log_mask(LOG_GUEST_ERROR, 943 "%s: process table not properly aligned: proc_tbl 0x" 944 TARGET_FMT_lx" proc_tbl_size 0x"TARGET_FMT_lx"\n", 945 __func__, proc_tbl, table_byte_size); 946 } 947 if (flags & FLAG_RADIX) { /* Register new RADIX process table */ 948 if (proc_tbl & 0xfff || proc_tbl >> 60) { 949 return H_P2; 950 } else if (page_size) { 951 return H_P3; 952 } else if (table_size > 24) { 953 return H_P4; 954 } 955 cproc = PATE1_GR | proc_tbl | table_size; 956 } else { /* Register new HPT process table */ 957 if (flags & FLAG_HASH_PROC_TBL) { /* Hash with Segment Tables */ 958 /* TODO - Not Supported */ 959 /* Technically caused by flag bits => H_PARAMETER */ 960 return H_PARAMETER; 961 } else { /* Hash with SLB */ 962 if (proc_tbl >> 38) { 963 return H_P2; 964 } else if (page_size & ~0x7) { 965 return H_P3; 966 } else if (table_size > 24) { 967 return H_P4; 968 } 969 } 970 cproc = (proc_tbl << 25) | page_size << 5 | table_size; 971 } 972 973 } else { /* Deregister current process table */ 974 /* 975 * Set to benign value: (current GR) | 0. This allows 976 * deregistration in KVM to succeed even if the radix bit 977 * in flags doesn't match the radix bit in the old PATE. 978 */ 979 cproc = spapr->patb_entry & PATE1_GR; 980 } 981 } else { /* Maintain current registration */ 982 if (!(flags & FLAG_RADIX) != !(spapr->patb_entry & PATE1_GR)) { 983 /* Technically caused by flag bits => H_PARAMETER */ 984 return H_PARAMETER; /* Existing Process Table Mismatch */ 985 } 986 cproc = spapr->patb_entry; 987 } 988 989 /* Check if we need to setup OR free the hpt */ 990 spapr_check_setup_free_hpt(spapr, spapr->patb_entry, cproc); 991 992 spapr->patb_entry = cproc; /* Save new process table */ 993 994 /* Update the UPRT, HR and GTSE bits in the LPCR for all cpus */ 995 if (flags & FLAG_RADIX) /* Radix must use process tables, also set HR */ 996 update_lpcr |= (LPCR_UPRT | LPCR_HR); 997 else if (flags & FLAG_HASH_PROC_TBL) /* Hash with process tables */ 998 update_lpcr |= LPCR_UPRT; 999 if (flags & FLAG_GTSE) /* Guest translation shootdown enable */ 1000 update_lpcr |= LPCR_GTSE; 1001 1002 spapr_set_all_lpcrs(update_lpcr, LPCR_UPRT | LPCR_HR | LPCR_GTSE); 1003 1004 if (kvm_enabled()) { 1005 return kvmppc_configure_v3_mmu(cpu, flags & FLAG_RADIX, 1006 flags & FLAG_GTSE, cproc); 1007 } 1008 return H_SUCCESS; 1009 } 1010 1011 #define H_SIGNAL_SYS_RESET_ALL -1 1012 #define H_SIGNAL_SYS_RESET_ALLBUTSELF -2 1013 1014 static target_ulong h_signal_sys_reset(PowerPCCPU *cpu, 1015 SpaprMachineState *spapr, 1016 target_ulong opcode, target_ulong *args) 1017 { 1018 target_long target = args[0]; 1019 CPUState *cs; 1020 1021 if (target < 0) { 1022 /* Broadcast */ 1023 if (target < H_SIGNAL_SYS_RESET_ALLBUTSELF) { 1024 return H_PARAMETER; 1025 } 1026 1027 CPU_FOREACH(cs) { 1028 PowerPCCPU *c = POWERPC_CPU(cs); 1029 1030 if (target == H_SIGNAL_SYS_RESET_ALLBUTSELF) { 1031 if (c == cpu) { 1032 continue; 1033 } 1034 } 1035 run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 1036 } 1037 return H_SUCCESS; 1038 1039 } else { 1040 /* Unicast */ 1041 cs = CPU(spapr_find_cpu(target)); 1042 if (cs) { 1043 run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 1044 return H_SUCCESS; 1045 } 1046 return H_PARAMETER; 1047 } 1048 } 1049 1050 /* Returns either a logical PVR or zero if none was found */ 1051 static uint32_t cas_check_pvr(PowerPCCPU *cpu, uint32_t max_compat, 1052 target_ulong *addr, bool *raw_mode_supported) 1053 { 1054 bool explicit_match = false; /* Matched the CPU's real PVR */ 1055 uint32_t best_compat = 0; 1056 int i; 1057 1058 /* 1059 * We scan the supplied table of PVRs looking for two things 1060 * 1. Is our real CPU PVR in the list? 1061 * 2. What's the "best" listed logical PVR 1062 */ 1063 for (i = 0; i < 512; ++i) { 1064 uint32_t pvr, pvr_mask; 1065 1066 pvr_mask = ldl_be_phys(&address_space_memory, *addr); 1067 pvr = ldl_be_phys(&address_space_memory, *addr + 4); 1068 *addr += 8; 1069 1070 if (~pvr_mask & pvr) { 1071 break; /* Terminator record */ 1072 } 1073 1074 if ((cpu->env.spr[SPR_PVR] & pvr_mask) == (pvr & pvr_mask)) { 1075 explicit_match = true; 1076 } else { 1077 if (ppc_check_compat(cpu, pvr, best_compat, max_compat)) { 1078 best_compat = pvr; 1079 } 1080 } 1081 } 1082 1083 *raw_mode_supported = explicit_match; 1084 1085 /* Parsing finished */ 1086 trace_spapr_cas_pvr(cpu->compat_pvr, explicit_match, best_compat); 1087 1088 return best_compat; 1089 } 1090 1091 static 1092 target_ulong do_client_architecture_support(PowerPCCPU *cpu, 1093 SpaprMachineState *spapr, 1094 target_ulong vec, 1095 target_ulong fdt_bufsize) 1096 { 1097 target_ulong ov_table; /* Working address in data buffer */ 1098 uint32_t cas_pvr; 1099 SpaprOptionVector *ov1_guest, *ov5_guest; 1100 bool guest_radix; 1101 bool raw_mode_supported = false; 1102 bool guest_xive; 1103 CPUState *cs; 1104 void *fdt; 1105 uint32_t max_compat = spapr->max_compat_pvr; 1106 1107 /* CAS is supposed to be called early when only the boot vCPU is active. */ 1108 CPU_FOREACH(cs) { 1109 if (cs == CPU(cpu)) { 1110 continue; 1111 } 1112 if (!cs->halted) { 1113 warn_report("guest has multiple active vCPUs at CAS, which is not allowed"); 1114 return H_MULTI_THREADS_ACTIVE; 1115 } 1116 } 1117 1118 cas_pvr = cas_check_pvr(cpu, max_compat, &vec, &raw_mode_supported); 1119 if (!cas_pvr && (!raw_mode_supported || max_compat)) { 1120 /* 1121 * We couldn't find a suitable compatibility mode, and either 1122 * the guest doesn't support "raw" mode for this CPU, or "raw" 1123 * mode is disabled because a maximum compat mode is set. 1124 */ 1125 error_report("Couldn't negotiate a suitable PVR during CAS"); 1126 return H_HARDWARE; 1127 } 1128 1129 /* Update CPUs */ 1130 if (cpu->compat_pvr != cas_pvr) { 1131 Error *local_err = NULL; 1132 1133 if (ppc_set_compat_all(cas_pvr, &local_err) < 0) { 1134 /* We fail to set compat mode (likely because running with KVM PR), 1135 * but maybe we can fallback to raw mode if the guest supports it. 1136 */ 1137 if (!raw_mode_supported) { 1138 error_report_err(local_err); 1139 return H_HARDWARE; 1140 } 1141 error_free(local_err); 1142 } 1143 } 1144 1145 /* For the future use: here @ov_table points to the first option vector */ 1146 ov_table = vec; 1147 1148 ov1_guest = spapr_ovec_parse_vector(ov_table, 1); 1149 if (!ov1_guest) { 1150 warn_report("guest didn't provide option vector 1"); 1151 return H_PARAMETER; 1152 } 1153 ov5_guest = spapr_ovec_parse_vector(ov_table, 5); 1154 if (!ov5_guest) { 1155 spapr_ovec_cleanup(ov1_guest); 1156 warn_report("guest didn't provide option vector 5"); 1157 return H_PARAMETER; 1158 } 1159 if (spapr_ovec_test(ov5_guest, OV5_MMU_BOTH)) { 1160 error_report("guest requested hash and radix MMU, which is invalid."); 1161 exit(EXIT_FAILURE); 1162 } 1163 if (spapr_ovec_test(ov5_guest, OV5_XIVE_BOTH)) { 1164 error_report("guest requested an invalid interrupt mode"); 1165 exit(EXIT_FAILURE); 1166 } 1167 1168 guest_radix = spapr_ovec_test(ov5_guest, OV5_MMU_RADIX_300); 1169 1170 guest_xive = spapr_ovec_test(ov5_guest, OV5_XIVE_EXPLOIT); 1171 1172 /* 1173 * HPT resizing is a bit of a special case, because when enabled 1174 * we assume an HPT guest will support it until it says it 1175 * doesn't, instead of assuming it won't support it until it says 1176 * it does. Strictly speaking that approach could break for 1177 * guests which don't make a CAS call, but those are so old we 1178 * don't care about them. Without that assumption we'd have to 1179 * make at least a temporary allocation of an HPT sized for max 1180 * memory, which could be impossibly difficult under KVM HV if 1181 * maxram is large. 1182 */ 1183 if (!guest_radix && !spapr_ovec_test(ov5_guest, OV5_HPT_RESIZE)) { 1184 int maxshift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); 1185 1186 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_REQUIRED) { 1187 error_report( 1188 "h_client_architecture_support: Guest doesn't support HPT resizing, but resize-hpt=required"); 1189 exit(1); 1190 } 1191 1192 if (spapr->htab_shift < maxshift) { 1193 /* Guest doesn't know about HPT resizing, so we 1194 * pre-emptively resize for the maximum permitted RAM. At 1195 * the point this is called, nothing should have been 1196 * entered into the existing HPT */ 1197 spapr_reallocate_hpt(spapr, maxshift, &error_fatal); 1198 push_sregs_to_kvm_pr(spapr); 1199 } 1200 } 1201 1202 /* NOTE: there are actually a number of ov5 bits where input from the 1203 * guest is always zero, and the platform/QEMU enables them independently 1204 * of guest input. To model these properly we'd want some sort of mask, 1205 * but since they only currently apply to memory migration as defined 1206 * by LoPAPR 1.1, 14.5.4.8, which QEMU doesn't implement, we don't need 1207 * to worry about this for now. 1208 */ 1209 1210 /* full range of negotiated ov5 capabilities */ 1211 spapr_ovec_intersect(spapr->ov5_cas, spapr->ov5, ov5_guest); 1212 spapr_ovec_cleanup(ov5_guest); 1213 1214 spapr_check_mmu_mode(guest_radix); 1215 1216 spapr->cas_pre_isa3_guest = !spapr_ovec_test(ov1_guest, OV1_PPC_3_00); 1217 spapr_ovec_cleanup(ov1_guest); 1218 1219 /* 1220 * Check for NUMA affinity conditions now that we know which NUMA 1221 * affinity the guest will use. 1222 */ 1223 spapr_numa_associativity_check(spapr); 1224 1225 /* 1226 * Ensure the guest asks for an interrupt mode we support; 1227 * otherwise terminate the boot. 1228 */ 1229 if (guest_xive) { 1230 if (!spapr->irq->xive) { 1231 error_report( 1232 "Guest requested unavailable interrupt mode (XIVE), try the ic-mode=xive or ic-mode=dual machine property"); 1233 exit(EXIT_FAILURE); 1234 } 1235 } else { 1236 if (!spapr->irq->xics) { 1237 error_report( 1238 "Guest requested unavailable interrupt mode (XICS), either don't set the ic-mode machine property or try ic-mode=xics or ic-mode=dual"); 1239 exit(EXIT_FAILURE); 1240 } 1241 } 1242 1243 spapr_irq_update_active_intc(spapr); 1244 1245 /* 1246 * Process all pending hot-plug/unplug requests now. An updated full 1247 * rendered FDT will be returned to the guest. 1248 */ 1249 spapr_drc_reset_all(spapr); 1250 spapr_clear_pending_hotplug_events(spapr); 1251 1252 /* 1253 * If spapr_machine_reset() did not set up a HPT but one is necessary 1254 * (because the guest isn't going to use radix) then set it up here. 1255 */ 1256 if ((spapr->patb_entry & PATE1_GR) && !guest_radix) { 1257 /* legacy hash or new hash: */ 1258 spapr_setup_hpt(spapr); 1259 } 1260 1261 fdt = spapr_build_fdt(spapr, spapr->vof != NULL, fdt_bufsize); 1262 g_free(spapr->fdt_blob); 1263 spapr->fdt_size = fdt_totalsize(fdt); 1264 spapr->fdt_initial_size = spapr->fdt_size; 1265 spapr->fdt_blob = fdt; 1266 1267 /* 1268 * Set the machine->fdt pointer again since we just freed 1269 * it above (by freeing spapr->fdt_blob). We set this 1270 * pointer to enable support for the 'dumpdtb' QMP/HMP 1271 * command. 1272 */ 1273 MACHINE(spapr)->fdt = fdt; 1274 1275 return H_SUCCESS; 1276 } 1277 1278 static target_ulong h_client_architecture_support(PowerPCCPU *cpu, 1279 SpaprMachineState *spapr, 1280 target_ulong opcode, 1281 target_ulong *args) 1282 { 1283 target_ulong vec = ppc64_phys_to_real(args[0]); 1284 target_ulong fdt_buf = args[1]; 1285 target_ulong fdt_bufsize = args[2]; 1286 target_ulong ret; 1287 SpaprDeviceTreeUpdateHeader hdr = { .version_id = 1 }; 1288 1289 if (fdt_bufsize < sizeof(hdr)) { 1290 error_report("SLOF provided insufficient CAS buffer " 1291 TARGET_FMT_lu " (min: %zu)", fdt_bufsize, sizeof(hdr)); 1292 exit(EXIT_FAILURE); 1293 } 1294 1295 fdt_bufsize -= sizeof(hdr); 1296 1297 ret = do_client_architecture_support(cpu, spapr, vec, fdt_bufsize); 1298 if (ret == H_SUCCESS) { 1299 _FDT((fdt_pack(spapr->fdt_blob))); 1300 spapr->fdt_size = fdt_totalsize(spapr->fdt_blob); 1301 spapr->fdt_initial_size = spapr->fdt_size; 1302 1303 cpu_physical_memory_write(fdt_buf, &hdr, sizeof(hdr)); 1304 cpu_physical_memory_write(fdt_buf + sizeof(hdr), spapr->fdt_blob, 1305 spapr->fdt_size); 1306 trace_spapr_cas_continue(spapr->fdt_size + sizeof(hdr)); 1307 } 1308 1309 return ret; 1310 } 1311 1312 target_ulong spapr_vof_client_architecture_support(MachineState *ms, 1313 CPUState *cs, 1314 target_ulong ovec_addr) 1315 { 1316 SpaprMachineState *spapr = SPAPR_MACHINE(ms); 1317 1318 target_ulong ret = do_client_architecture_support(POWERPC_CPU(cs), spapr, 1319 ovec_addr, FDT_MAX_SIZE); 1320 1321 /* 1322 * This adds stdout and generates phandles for boottime and CAS FDTs. 1323 * It is alright to update the FDT here as do_client_architecture_support() 1324 * does not pack it. 1325 */ 1326 spapr_vof_client_dt_finalize(spapr, spapr->fdt_blob); 1327 1328 return ret; 1329 } 1330 1331 static target_ulong h_get_cpu_characteristics(PowerPCCPU *cpu, 1332 SpaprMachineState *spapr, 1333 target_ulong opcode, 1334 target_ulong *args) 1335 { 1336 uint64_t characteristics = H_CPU_CHAR_HON_BRANCH_HINTS & 1337 ~H_CPU_CHAR_THR_RECONF_TRIG; 1338 uint64_t behaviour = H_CPU_BEHAV_FAVOUR_SECURITY; 1339 uint8_t safe_cache = spapr_get_cap(spapr, SPAPR_CAP_CFPC); 1340 uint8_t safe_bounds_check = spapr_get_cap(spapr, SPAPR_CAP_SBBC); 1341 uint8_t safe_indirect_branch = spapr_get_cap(spapr, SPAPR_CAP_IBS); 1342 uint8_t count_cache_flush_assist = spapr_get_cap(spapr, 1343 SPAPR_CAP_CCF_ASSIST); 1344 1345 switch (safe_cache) { 1346 case SPAPR_CAP_WORKAROUND: 1347 characteristics |= H_CPU_CHAR_L1D_FLUSH_ORI30; 1348 characteristics |= H_CPU_CHAR_L1D_FLUSH_TRIG2; 1349 characteristics |= H_CPU_CHAR_L1D_THREAD_PRIV; 1350 behaviour |= H_CPU_BEHAV_L1D_FLUSH_PR; 1351 break; 1352 case SPAPR_CAP_FIXED: 1353 behaviour |= H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY; 1354 behaviour |= H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS; 1355 break; 1356 default: /* broken */ 1357 assert(safe_cache == SPAPR_CAP_BROKEN); 1358 behaviour |= H_CPU_BEHAV_L1D_FLUSH_PR; 1359 break; 1360 } 1361 1362 switch (safe_bounds_check) { 1363 case SPAPR_CAP_WORKAROUND: 1364 characteristics |= H_CPU_CHAR_SPEC_BAR_ORI31; 1365 behaviour |= H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; 1366 break; 1367 case SPAPR_CAP_FIXED: 1368 break; 1369 default: /* broken */ 1370 assert(safe_bounds_check == SPAPR_CAP_BROKEN); 1371 behaviour |= H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; 1372 break; 1373 } 1374 1375 switch (safe_indirect_branch) { 1376 case SPAPR_CAP_FIXED_NA: 1377 break; 1378 case SPAPR_CAP_FIXED_CCD: 1379 characteristics |= H_CPU_CHAR_CACHE_COUNT_DIS; 1380 break; 1381 case SPAPR_CAP_FIXED_IBS: 1382 characteristics |= H_CPU_CHAR_BCCTRL_SERIALISED; 1383 break; 1384 case SPAPR_CAP_WORKAROUND: 1385 behaviour |= H_CPU_BEHAV_FLUSH_COUNT_CACHE; 1386 if (count_cache_flush_assist) { 1387 characteristics |= H_CPU_CHAR_BCCTR_FLUSH_ASSIST; 1388 } 1389 break; 1390 default: /* broken */ 1391 assert(safe_indirect_branch == SPAPR_CAP_BROKEN); 1392 break; 1393 } 1394 1395 args[0] = characteristics; 1396 args[1] = behaviour; 1397 return H_SUCCESS; 1398 } 1399 1400 static target_ulong h_update_dt(PowerPCCPU *cpu, SpaprMachineState *spapr, 1401 target_ulong opcode, target_ulong *args) 1402 { 1403 target_ulong dt = ppc64_phys_to_real(args[0]); 1404 struct fdt_header hdr = { 0 }; 1405 unsigned cb; 1406 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 1407 void *fdt; 1408 1409 cpu_physical_memory_read(dt, &hdr, sizeof(hdr)); 1410 cb = fdt32_to_cpu(hdr.totalsize); 1411 1412 if (!smc->update_dt_enabled) { 1413 return H_SUCCESS; 1414 } 1415 1416 /* Check that the fdt did not grow out of proportion */ 1417 if (cb > spapr->fdt_initial_size * 2) { 1418 trace_spapr_update_dt_failed_size(spapr->fdt_initial_size, cb, 1419 fdt32_to_cpu(hdr.magic)); 1420 return H_PARAMETER; 1421 } 1422 1423 fdt = g_malloc0(cb); 1424 cpu_physical_memory_read(dt, fdt, cb); 1425 1426 /* Check the fdt consistency */ 1427 if (fdt_check_full(fdt, cb)) { 1428 trace_spapr_update_dt_failed_check(spapr->fdt_initial_size, cb, 1429 fdt32_to_cpu(hdr.magic)); 1430 return H_PARAMETER; 1431 } 1432 1433 g_free(spapr->fdt_blob); 1434 spapr->fdt_size = cb; 1435 spapr->fdt_blob = fdt; 1436 trace_spapr_update_dt(cb); 1437 1438 return H_SUCCESS; 1439 } 1440 1441 static spapr_hcall_fn papr_hypercall_table[(MAX_HCALL_OPCODE / 4) + 1]; 1442 static spapr_hcall_fn kvmppc_hypercall_table[KVMPPC_HCALL_MAX - KVMPPC_HCALL_BASE + 1]; 1443 static spapr_hcall_fn svm_hypercall_table[(SVM_HCALL_MAX - SVM_HCALL_BASE) / 4 + 1]; 1444 1445 void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn) 1446 { 1447 spapr_hcall_fn *slot; 1448 1449 if (opcode <= MAX_HCALL_OPCODE) { 1450 assert((opcode & 0x3) == 0); 1451 1452 slot = &papr_hypercall_table[opcode / 4]; 1453 } else if (opcode >= SVM_HCALL_BASE && opcode <= SVM_HCALL_MAX) { 1454 /* we only have SVM-related hcall numbers assigned in multiples of 4 */ 1455 assert((opcode & 0x3) == 0); 1456 1457 slot = &svm_hypercall_table[(opcode - SVM_HCALL_BASE) / 4]; 1458 } else { 1459 assert((opcode >= KVMPPC_HCALL_BASE) && (opcode <= KVMPPC_HCALL_MAX)); 1460 1461 slot = &kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE]; 1462 } 1463 1464 assert(!(*slot)); 1465 *slot = fn; 1466 } 1467 1468 target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, 1469 target_ulong *args) 1470 { 1471 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 1472 1473 if ((opcode <= MAX_HCALL_OPCODE) 1474 && ((opcode & 0x3) == 0)) { 1475 spapr_hcall_fn fn = papr_hypercall_table[opcode / 4]; 1476 1477 if (fn) { 1478 return fn(cpu, spapr, opcode, args); 1479 } 1480 } else if ((opcode >= SVM_HCALL_BASE) && 1481 (opcode <= SVM_HCALL_MAX)) { 1482 spapr_hcall_fn fn = svm_hypercall_table[(opcode - SVM_HCALL_BASE) / 4]; 1483 1484 if (fn) { 1485 return fn(cpu, spapr, opcode, args); 1486 } 1487 } else if ((opcode >= KVMPPC_HCALL_BASE) && 1488 (opcode <= KVMPPC_HCALL_MAX)) { 1489 spapr_hcall_fn fn = kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE]; 1490 1491 if (fn) { 1492 return fn(cpu, spapr, opcode, args); 1493 } 1494 } 1495 1496 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x" TARGET_FMT_lx "\n", 1497 opcode); 1498 return H_FUNCTION; 1499 } 1500 1501 #ifdef CONFIG_TCG 1502 static void hypercall_register_softmmu(void) 1503 { 1504 /* DO NOTHING */ 1505 } 1506 #else 1507 static target_ulong h_softmmu(PowerPCCPU *cpu, SpaprMachineState *spapr, 1508 target_ulong opcode, target_ulong *args) 1509 { 1510 g_assert_not_reached(); 1511 } 1512 1513 static void hypercall_register_softmmu(void) 1514 { 1515 /* hcall-pft */ 1516 spapr_register_hypercall(H_ENTER, h_softmmu); 1517 spapr_register_hypercall(H_REMOVE, h_softmmu); 1518 spapr_register_hypercall(H_PROTECT, h_softmmu); 1519 spapr_register_hypercall(H_READ, h_softmmu); 1520 1521 /* hcall-bulk */ 1522 spapr_register_hypercall(H_BULK_REMOVE, h_softmmu); 1523 } 1524 #endif 1525 1526 static void hypercall_register_types(void) 1527 { 1528 hypercall_register_softmmu(); 1529 1530 /* hcall-hpt-resize */ 1531 spapr_register_hypercall(H_RESIZE_HPT_PREPARE, h_resize_hpt_prepare); 1532 spapr_register_hypercall(H_RESIZE_HPT_COMMIT, h_resize_hpt_commit); 1533 1534 /* hcall-splpar */ 1535 spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); 1536 spapr_register_hypercall(H_CEDE, h_cede); 1537 spapr_register_hypercall(H_CONFER, h_confer); 1538 spapr_register_hypercall(H_PROD, h_prod); 1539 1540 /* hcall-join */ 1541 spapr_register_hypercall(H_JOIN, h_join); 1542 1543 spapr_register_hypercall(H_SIGNAL_SYS_RESET, h_signal_sys_reset); 1544 1545 /* processor register resource access h-calls */ 1546 spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0); 1547 spapr_register_hypercall(H_SET_DABR, h_set_dabr); 1548 spapr_register_hypercall(H_SET_XDABR, h_set_xdabr); 1549 spapr_register_hypercall(H_PAGE_INIT, h_page_init); 1550 spapr_register_hypercall(H_SET_MODE, h_set_mode); 1551 1552 /* In Memory Table MMU h-calls */ 1553 spapr_register_hypercall(H_CLEAN_SLB, h_clean_slb); 1554 spapr_register_hypercall(H_INVALIDATE_PID, h_invalidate_pid); 1555 spapr_register_hypercall(H_REGISTER_PROC_TBL, h_register_process_table); 1556 1557 /* hcall-get-cpu-characteristics */ 1558 spapr_register_hypercall(H_GET_CPU_CHARACTERISTICS, 1559 h_get_cpu_characteristics); 1560 1561 /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate 1562 * here between the "CI" and the "CACHE" variants, they will use whatever 1563 * mapping attributes qemu is using. When using KVM, the kernel will 1564 * enforce the attributes more strongly 1565 */ 1566 spapr_register_hypercall(H_LOGICAL_CI_LOAD, h_logical_load); 1567 spapr_register_hypercall(H_LOGICAL_CI_STORE, h_logical_store); 1568 spapr_register_hypercall(H_LOGICAL_CACHE_LOAD, h_logical_load); 1569 spapr_register_hypercall(H_LOGICAL_CACHE_STORE, h_logical_store); 1570 spapr_register_hypercall(H_LOGICAL_ICBI, h_logical_icbi); 1571 spapr_register_hypercall(H_LOGICAL_DCBF, h_logical_dcbf); 1572 spapr_register_hypercall(KVMPPC_H_LOGICAL_MEMOP, h_logical_memop); 1573 1574 /* qemu/KVM-PPC specific hcalls */ 1575 spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); 1576 1577 /* ibm,client-architecture-support support */ 1578 spapr_register_hypercall(KVMPPC_H_CAS, h_client_architecture_support); 1579 1580 spapr_register_hypercall(KVMPPC_H_UPDATE_DT, h_update_dt); 1581 1582 spapr_register_nested(); 1583 } 1584 1585 type_init(hypercall_register_types) 1586