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 "sysemu/tcg.h" 7 #include "qemu/log.h" 8 #include "qemu/main-loop.h" 9 #include "qemu/module.h" 10 #include "qemu/error-report.h" 11 #include "exec/exec-all.h" 12 #include "exec/tb-flush.h" 13 #include "helper_regs.h" 14 #include "hw/ppc/ppc.h" 15 #include "hw/ppc/spapr.h" 16 #include "hw/ppc/spapr_cpu_core.h" 17 #include "hw/ppc/spapr_nested.h" 18 #include "mmu-hash64.h" 19 #include "cpu-models.h" 20 #include "trace.h" 21 #include "kvm_ppc.h" 22 #include "hw/ppc/fdt.h" 23 #include "hw/ppc/spapr_ovec.h" 24 #include "hw/ppc/spapr_numa.h" 25 #include "mmu-book3s-v3.h" 26 #include "hw/mem/memory-device.h" 27 28 bool is_ram_address(SpaprMachineState *spapr, hwaddr addr) 29 { 30 MachineState *machine = MACHINE(spapr); 31 DeviceMemoryState *dms = machine->device_memory; 32 33 if (addr < machine->ram_size) { 34 return true; 35 } 36 if (dms && (addr >= dms->base) 37 && ((addr - dms->base) < memory_region_size(&dms->mr))) { 38 return true; 39 } 40 41 return false; 42 } 43 44 /* Convert a return code from the KVM ioctl()s implementing resize HPT 45 * into a PAPR hypercall return code */ 46 static target_ulong resize_hpt_convert_rc(int ret) 47 { 48 if (ret >= 100000) { 49 return H_LONG_BUSY_ORDER_100_SEC; 50 } else if (ret >= 10000) { 51 return H_LONG_BUSY_ORDER_10_SEC; 52 } else if (ret >= 1000) { 53 return H_LONG_BUSY_ORDER_1_SEC; 54 } else if (ret >= 100) { 55 return H_LONG_BUSY_ORDER_100_MSEC; 56 } else if (ret >= 10) { 57 return H_LONG_BUSY_ORDER_10_MSEC; 58 } else if (ret > 0) { 59 return H_LONG_BUSY_ORDER_1_MSEC; 60 } 61 62 switch (ret) { 63 case 0: 64 return H_SUCCESS; 65 case -EPERM: 66 return H_AUTHORITY; 67 case -EINVAL: 68 return H_PARAMETER; 69 case -ENXIO: 70 return H_CLOSED; 71 case -ENOSPC: 72 return H_PTEG_FULL; 73 case -EBUSY: 74 return H_BUSY; 75 case -ENOMEM: 76 return H_NO_MEM; 77 default: 78 return H_HARDWARE; 79 } 80 } 81 82 static target_ulong h_resize_hpt_prepare(PowerPCCPU *cpu, 83 SpaprMachineState *spapr, 84 target_ulong opcode, 85 target_ulong *args) 86 { 87 target_ulong flags = args[0]; 88 int shift = args[1]; 89 uint64_t current_ram_size; 90 int rc; 91 92 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { 93 return H_AUTHORITY; 94 } 95 96 if (!spapr->htab_shift) { 97 /* Radix guest, no HPT */ 98 return H_NOT_AVAILABLE; 99 } 100 101 trace_spapr_h_resize_hpt_prepare(flags, shift); 102 103 if (flags != 0) { 104 return H_PARAMETER; 105 } 106 107 if (shift && ((shift < 18) || (shift > 46))) { 108 return H_PARAMETER; 109 } 110 111 current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); 112 113 /* We only allow the guest to allocate an HPT one order above what 114 * we'd normally give them (to stop a small guest claiming a huge 115 * chunk of resources in the HPT */ 116 if (shift > (spapr_hpt_shift_for_ramsize(current_ram_size) + 1)) { 117 return H_RESOURCE; 118 } 119 120 rc = kvmppc_resize_hpt_prepare(cpu, flags, shift); 121 if (rc != -ENOSYS) { 122 return resize_hpt_convert_rc(rc); 123 } 124 125 if (kvm_enabled()) { 126 return H_HARDWARE; 127 } 128 129 return softmmu_resize_hpt_prepare(cpu, spapr, shift); 130 } 131 132 static void do_push_sregs_to_kvm_pr(CPUState *cs, run_on_cpu_data data) 133 { 134 int ret; 135 136 cpu_synchronize_state(cs); 137 138 ret = kvmppc_put_books_sregs(POWERPC_CPU(cs)); 139 if (ret < 0) { 140 error_report("failed to push sregs to KVM: %s", strerror(-ret)); 141 exit(1); 142 } 143 } 144 145 void push_sregs_to_kvm_pr(SpaprMachineState *spapr) 146 { 147 CPUState *cs; 148 149 /* 150 * This is a hack for the benefit of KVM PR - it abuses the SDR1 151 * slot in kvm_sregs to communicate the userspace address of the 152 * HPT 153 */ 154 if (!kvm_enabled() || !spapr->htab) { 155 return; 156 } 157 158 CPU_FOREACH(cs) { 159 run_on_cpu(cs, do_push_sregs_to_kvm_pr, RUN_ON_CPU_NULL); 160 } 161 } 162 163 static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, 164 SpaprMachineState *spapr, 165 target_ulong opcode, 166 target_ulong *args) 167 { 168 target_ulong flags = args[0]; 169 target_ulong shift = args[1]; 170 int rc; 171 172 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { 173 return H_AUTHORITY; 174 } 175 176 if (!spapr->htab_shift) { 177 /* Radix guest, no HPT */ 178 return H_NOT_AVAILABLE; 179 } 180 181 trace_spapr_h_resize_hpt_commit(flags, shift); 182 183 rc = kvmppc_resize_hpt_commit(cpu, flags, shift); 184 if (rc != -ENOSYS) { 185 rc = resize_hpt_convert_rc(rc); 186 if (rc == H_SUCCESS) { 187 /* Need to set the new htab_shift in the machine state */ 188 spapr->htab_shift = shift; 189 } 190 return rc; 191 } 192 193 if (kvm_enabled()) { 194 return H_HARDWARE; 195 } 196 197 return softmmu_resize_hpt_commit(cpu, spapr, flags, shift); 198 } 199 200 201 202 static target_ulong h_set_sprg0(PowerPCCPU *cpu, SpaprMachineState *spapr, 203 target_ulong opcode, target_ulong *args) 204 { 205 cpu_synchronize_state(CPU(cpu)); 206 cpu->env.spr[SPR_SPRG0] = args[0]; 207 208 return H_SUCCESS; 209 } 210 211 static target_ulong h_set_dabr(PowerPCCPU *cpu, SpaprMachineState *spapr, 212 target_ulong opcode, target_ulong *args) 213 { 214 if (!ppc_has_spr(cpu, SPR_DABR)) { 215 return H_HARDWARE; /* DABR register not available */ 216 } 217 cpu_synchronize_state(CPU(cpu)); 218 219 if (ppc_has_spr(cpu, SPR_DABRX)) { 220 cpu->env.spr[SPR_DABRX] = 0x3; /* Use Problem and Privileged state */ 221 } else if (!(args[0] & 0x4)) { /* Breakpoint Translation set? */ 222 return H_RESERVED_DABR; 223 } 224 225 cpu->env.spr[SPR_DABR] = args[0]; 226 return H_SUCCESS; 227 } 228 229 static target_ulong h_set_xdabr(PowerPCCPU *cpu, SpaprMachineState *spapr, 230 target_ulong opcode, target_ulong *args) 231 { 232 target_ulong dabrx = args[1]; 233 234 if (!ppc_has_spr(cpu, SPR_DABR) || !ppc_has_spr(cpu, SPR_DABRX)) { 235 return H_HARDWARE; 236 } 237 238 if ((dabrx & ~0xfULL) != 0 || (dabrx & H_DABRX_HYPERVISOR) != 0 239 || (dabrx & (H_DABRX_KERNEL | H_DABRX_USER)) == 0) { 240 return H_PARAMETER; 241 } 242 243 cpu_synchronize_state(CPU(cpu)); 244 cpu->env.spr[SPR_DABRX] = dabrx; 245 cpu->env.spr[SPR_DABR] = args[0]; 246 247 return H_SUCCESS; 248 } 249 250 static target_ulong h_page_init(PowerPCCPU *cpu, SpaprMachineState *spapr, 251 target_ulong opcode, target_ulong *args) 252 { 253 target_ulong flags = args[0]; 254 hwaddr dst = args[1]; 255 hwaddr src = args[2]; 256 hwaddr len = TARGET_PAGE_SIZE; 257 uint8_t *pdst, *psrc; 258 target_long ret = H_SUCCESS; 259 260 if (flags & ~(H_ICACHE_SYNCHRONIZE | H_ICACHE_INVALIDATE 261 | H_COPY_PAGE | H_ZERO_PAGE)) { 262 qemu_log_mask(LOG_UNIMP, "h_page_init: Bad flags (" TARGET_FMT_lx "\n", 263 flags); 264 return H_PARAMETER; 265 } 266 267 /* Map-in destination */ 268 if (!is_ram_address(spapr, dst) || (dst & ~TARGET_PAGE_MASK) != 0) { 269 return H_PARAMETER; 270 } 271 pdst = cpu_physical_memory_map(dst, &len, true); 272 if (!pdst || len != TARGET_PAGE_SIZE) { 273 return H_PARAMETER; 274 } 275 276 if (flags & H_COPY_PAGE) { 277 /* Map-in source, copy to destination, and unmap source again */ 278 if (!is_ram_address(spapr, src) || (src & ~TARGET_PAGE_MASK) != 0) { 279 ret = H_PARAMETER; 280 goto unmap_out; 281 } 282 psrc = cpu_physical_memory_map(src, &len, false); 283 if (!psrc || len != TARGET_PAGE_SIZE) { 284 ret = H_PARAMETER; 285 goto unmap_out; 286 } 287 memcpy(pdst, psrc, len); 288 cpu_physical_memory_unmap(psrc, len, 0, len); 289 } else if (flags & H_ZERO_PAGE) { 290 memset(pdst, 0, len); /* Just clear the destination page */ 291 } 292 293 if (kvm_enabled() && (flags & H_ICACHE_SYNCHRONIZE) != 0) { 294 kvmppc_dcbst_range(cpu, pdst, len); 295 } 296 if (flags & (H_ICACHE_SYNCHRONIZE | H_ICACHE_INVALIDATE)) { 297 if (kvm_enabled()) { 298 kvmppc_icbi_range(cpu, pdst, len); 299 } else { 300 tb_flush(CPU(cpu)); 301 } 302 } 303 304 unmap_out: 305 cpu_physical_memory_unmap(pdst, TARGET_PAGE_SIZE, 1, len); 306 return ret; 307 } 308 309 #define FLAGS_REGISTER_VPA 0x0000200000000000ULL 310 #define FLAGS_REGISTER_DTL 0x0000400000000000ULL 311 #define FLAGS_REGISTER_SLBSHADOW 0x0000600000000000ULL 312 #define FLAGS_DEREGISTER_VPA 0x0000a00000000000ULL 313 #define FLAGS_DEREGISTER_DTL 0x0000c00000000000ULL 314 #define FLAGS_DEREGISTER_SLBSHADOW 0x0000e00000000000ULL 315 316 static target_ulong register_vpa(PowerPCCPU *cpu, target_ulong vpa) 317 { 318 CPUState *cs = CPU(cpu); 319 CPUPPCState *env = &cpu->env; 320 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 321 uint16_t size; 322 uint8_t tmp; 323 324 if (vpa == 0) { 325 hcall_dprintf("Can't cope with registering a VPA at logical 0\n"); 326 return H_HARDWARE; 327 } 328 329 if (vpa % env->dcache_line_size) { 330 return H_PARAMETER; 331 } 332 /* FIXME: bounds check the address */ 333 334 size = lduw_be_phys(cs->as, vpa + 0x4); 335 336 if (size < VPA_MIN_SIZE) { 337 return H_PARAMETER; 338 } 339 340 /* VPA is not allowed to cross a page boundary */ 341 if ((vpa / 4096) != ((vpa + size - 1) / 4096)) { 342 return H_PARAMETER; 343 } 344 345 spapr_cpu->vpa_addr = vpa; 346 347 tmp = ldub_phys(cs->as, spapr_cpu->vpa_addr + VPA_SHARED_PROC_OFFSET); 348 tmp |= VPA_SHARED_PROC_VAL; 349 stb_phys(cs->as, spapr_cpu->vpa_addr + VPA_SHARED_PROC_OFFSET, tmp); 350 351 return H_SUCCESS; 352 } 353 354 static target_ulong deregister_vpa(PowerPCCPU *cpu, target_ulong vpa) 355 { 356 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 357 358 if (spapr_cpu->slb_shadow_addr) { 359 return H_RESOURCE; 360 } 361 362 if (spapr_cpu->dtl_addr) { 363 return H_RESOURCE; 364 } 365 366 spapr_cpu->vpa_addr = 0; 367 return H_SUCCESS; 368 } 369 370 static target_ulong register_slb_shadow(PowerPCCPU *cpu, target_ulong addr) 371 { 372 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 373 uint32_t size; 374 375 if (addr == 0) { 376 hcall_dprintf("Can't cope with SLB shadow at logical 0\n"); 377 return H_HARDWARE; 378 } 379 380 size = ldl_be_phys(CPU(cpu)->as, addr + 0x4); 381 if (size < 0x8) { 382 return H_PARAMETER; 383 } 384 385 if ((addr / 4096) != ((addr + size - 1) / 4096)) { 386 return H_PARAMETER; 387 } 388 389 if (!spapr_cpu->vpa_addr) { 390 return H_RESOURCE; 391 } 392 393 spapr_cpu->slb_shadow_addr = addr; 394 spapr_cpu->slb_shadow_size = size; 395 396 return H_SUCCESS; 397 } 398 399 static target_ulong deregister_slb_shadow(PowerPCCPU *cpu, target_ulong addr) 400 { 401 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 402 403 spapr_cpu->slb_shadow_addr = 0; 404 spapr_cpu->slb_shadow_size = 0; 405 return H_SUCCESS; 406 } 407 408 static target_ulong register_dtl(PowerPCCPU *cpu, target_ulong addr) 409 { 410 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 411 uint32_t size; 412 413 if (addr == 0) { 414 hcall_dprintf("Can't cope with DTL at logical 0\n"); 415 return H_HARDWARE; 416 } 417 418 size = ldl_be_phys(CPU(cpu)->as, addr + 0x4); 419 420 if (size < 48) { 421 return H_PARAMETER; 422 } 423 424 if (!spapr_cpu->vpa_addr) { 425 return H_RESOURCE; 426 } 427 428 spapr_cpu->dtl_addr = addr; 429 spapr_cpu->dtl_size = size; 430 431 return H_SUCCESS; 432 } 433 434 static target_ulong deregister_dtl(PowerPCCPU *cpu, target_ulong addr) 435 { 436 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 437 438 spapr_cpu->dtl_addr = 0; 439 spapr_cpu->dtl_size = 0; 440 441 return H_SUCCESS; 442 } 443 444 static target_ulong h_register_vpa(PowerPCCPU *cpu, SpaprMachineState *spapr, 445 target_ulong opcode, target_ulong *args) 446 { 447 target_ulong flags = args[0]; 448 target_ulong procno = args[1]; 449 target_ulong vpa = args[2]; 450 target_ulong ret = H_PARAMETER; 451 PowerPCCPU *tcpu; 452 453 tcpu = spapr_find_cpu(procno); 454 if (!tcpu) { 455 return H_PARAMETER; 456 } 457 458 switch (flags) { 459 case FLAGS_REGISTER_VPA: 460 ret = register_vpa(tcpu, vpa); 461 break; 462 463 case FLAGS_DEREGISTER_VPA: 464 ret = deregister_vpa(tcpu, vpa); 465 break; 466 467 case FLAGS_REGISTER_SLBSHADOW: 468 ret = register_slb_shadow(tcpu, vpa); 469 break; 470 471 case FLAGS_DEREGISTER_SLBSHADOW: 472 ret = deregister_slb_shadow(tcpu, vpa); 473 break; 474 475 case FLAGS_REGISTER_DTL: 476 ret = register_dtl(tcpu, vpa); 477 break; 478 479 case FLAGS_DEREGISTER_DTL: 480 ret = deregister_dtl(tcpu, vpa); 481 break; 482 } 483 484 return ret; 485 } 486 487 static target_ulong h_cede(PowerPCCPU *cpu, SpaprMachineState *spapr, 488 target_ulong opcode, target_ulong *args) 489 { 490 CPUPPCState *env = &cpu->env; 491 CPUState *cs = CPU(cpu); 492 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 493 494 env->msr |= (1ULL << MSR_EE); 495 hreg_compute_hflags(env); 496 ppc_maybe_interrupt(env); 497 498 if (spapr_cpu->prod) { 499 spapr_cpu->prod = false; 500 return H_SUCCESS; 501 } 502 503 if (!cpu_has_work(cs)) { 504 cs->halted = 1; 505 cs->exception_index = EXCP_HLT; 506 cs->exit_request = 1; 507 ppc_maybe_interrupt(env); 508 } 509 510 return H_SUCCESS; 511 } 512 513 /* 514 * Confer to self, aka join. Cede could use the same pattern as well, if 515 * EXCP_HLT can be changed to ECXP_HALTED. 516 */ 517 static target_ulong h_confer_self(PowerPCCPU *cpu) 518 { 519 CPUState *cs = CPU(cpu); 520 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 521 522 if (spapr_cpu->prod) { 523 spapr_cpu->prod = false; 524 return H_SUCCESS; 525 } 526 cs->halted = 1; 527 cs->exception_index = EXCP_HALTED; 528 cs->exit_request = 1; 529 ppc_maybe_interrupt(&cpu->env); 530 531 return H_SUCCESS; 532 } 533 534 static target_ulong h_join(PowerPCCPU *cpu, SpaprMachineState *spapr, 535 target_ulong opcode, target_ulong *args) 536 { 537 CPUPPCState *env = &cpu->env; 538 CPUState *cs; 539 bool last_unjoined = true; 540 541 if (env->msr & (1ULL << MSR_EE)) { 542 return H_BAD_MODE; 543 } 544 545 /* 546 * Must not join the last CPU running. Interestingly, no such restriction 547 * for H_CONFER-to-self, but that is probably not intended to be used 548 * when H_JOIN is available. 549 */ 550 CPU_FOREACH(cs) { 551 PowerPCCPU *c = POWERPC_CPU(cs); 552 CPUPPCState *e = &c->env; 553 if (c == cpu) { 554 continue; 555 } 556 557 /* Don't have a way to indicate joined, so use halted && MSR[EE]=0 */ 558 if (!cs->halted || (e->msr & (1ULL << MSR_EE))) { 559 last_unjoined = false; 560 break; 561 } 562 } 563 if (last_unjoined) { 564 return H_CONTINUE; 565 } 566 567 return h_confer_self(cpu); 568 } 569 570 static target_ulong h_confer(PowerPCCPU *cpu, SpaprMachineState *spapr, 571 target_ulong opcode, target_ulong *args) 572 { 573 target_long target = args[0]; 574 uint32_t dispatch = args[1]; 575 CPUState *cs = CPU(cpu); 576 SpaprCpuState *spapr_cpu; 577 578 /* 579 * -1 means confer to all other CPUs without dispatch counter check, 580 * otherwise it's a targeted confer. 581 */ 582 if (target != -1) { 583 PowerPCCPU *target_cpu = spapr_find_cpu(target); 584 uint32_t target_dispatch; 585 586 if (!target_cpu) { 587 return H_PARAMETER; 588 } 589 590 /* 591 * target == self is a special case, we wait until prodded, without 592 * dispatch counter check. 593 */ 594 if (cpu == target_cpu) { 595 return h_confer_self(cpu); 596 } 597 598 spapr_cpu = spapr_cpu_state(target_cpu); 599 if (!spapr_cpu->vpa_addr || ((dispatch & 1) == 0)) { 600 return H_SUCCESS; 601 } 602 603 target_dispatch = ldl_be_phys(cs->as, 604 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 605 if (target_dispatch != dispatch) { 606 return H_SUCCESS; 607 } 608 609 /* 610 * The targeted confer does not do anything special beyond yielding 611 * the current vCPU, but even this should be better than nothing. 612 * At least for single-threaded tcg, it gives the target a chance to 613 * run before we run again. Multi-threaded tcg does not really do 614 * anything with EXCP_YIELD yet. 615 */ 616 } 617 618 cs->exception_index = EXCP_YIELD; 619 cs->exit_request = 1; 620 cpu_loop_exit(cs); 621 622 return H_SUCCESS; 623 } 624 625 static target_ulong h_prod(PowerPCCPU *cpu, SpaprMachineState *spapr, 626 target_ulong opcode, target_ulong *args) 627 { 628 target_long target = args[0]; 629 PowerPCCPU *tcpu; 630 CPUState *cs; 631 SpaprCpuState *spapr_cpu; 632 633 tcpu = spapr_find_cpu(target); 634 cs = CPU(tcpu); 635 if (!cs) { 636 return H_PARAMETER; 637 } 638 639 spapr_cpu = spapr_cpu_state(tcpu); 640 spapr_cpu->prod = true; 641 cs->halted = 0; 642 ppc_maybe_interrupt(&cpu->env); 643 qemu_cpu_kick(cs); 644 645 return H_SUCCESS; 646 } 647 648 static target_ulong h_rtas(PowerPCCPU *cpu, SpaprMachineState *spapr, 649 target_ulong opcode, target_ulong *args) 650 { 651 target_ulong rtas_r3 = args[0]; 652 uint32_t token = rtas_ld(rtas_r3, 0); 653 uint32_t nargs = rtas_ld(rtas_r3, 1); 654 uint32_t nret = rtas_ld(rtas_r3, 2); 655 656 return spapr_rtas_call(cpu, spapr, token, nargs, rtas_r3 + 12, 657 nret, rtas_r3 + 12 + 4*nargs); 658 } 659 660 static target_ulong h_logical_load(PowerPCCPU *cpu, SpaprMachineState *spapr, 661 target_ulong opcode, target_ulong *args) 662 { 663 CPUState *cs = CPU(cpu); 664 target_ulong size = args[0]; 665 target_ulong addr = args[1]; 666 667 switch (size) { 668 case 1: 669 args[0] = ldub_phys(cs->as, addr); 670 return H_SUCCESS; 671 case 2: 672 args[0] = lduw_phys(cs->as, addr); 673 return H_SUCCESS; 674 case 4: 675 args[0] = ldl_phys(cs->as, addr); 676 return H_SUCCESS; 677 case 8: 678 args[0] = ldq_phys(cs->as, addr); 679 return H_SUCCESS; 680 } 681 return H_PARAMETER; 682 } 683 684 static target_ulong h_logical_store(PowerPCCPU *cpu, SpaprMachineState *spapr, 685 target_ulong opcode, target_ulong *args) 686 { 687 CPUState *cs = CPU(cpu); 688 689 target_ulong size = args[0]; 690 target_ulong addr = args[1]; 691 target_ulong val = args[2]; 692 693 switch (size) { 694 case 1: 695 stb_phys(cs->as, addr, val); 696 return H_SUCCESS; 697 case 2: 698 stw_phys(cs->as, addr, val); 699 return H_SUCCESS; 700 case 4: 701 stl_phys(cs->as, addr, val); 702 return H_SUCCESS; 703 case 8: 704 stq_phys(cs->as, addr, val); 705 return H_SUCCESS; 706 } 707 return H_PARAMETER; 708 } 709 710 static target_ulong h_logical_memop(PowerPCCPU *cpu, SpaprMachineState *spapr, 711 target_ulong opcode, target_ulong *args) 712 { 713 CPUState *cs = CPU(cpu); 714 715 target_ulong dst = args[0]; /* Destination address */ 716 target_ulong src = args[1]; /* Source address */ 717 target_ulong esize = args[2]; /* Element size (0=1,1=2,2=4,3=8) */ 718 target_ulong count = args[3]; /* Element count */ 719 target_ulong op = args[4]; /* 0 = copy, 1 = invert */ 720 uint64_t tmp; 721 unsigned int mask = (1 << esize) - 1; 722 int step = 1 << esize; 723 724 if (count > 0x80000000) { 725 return H_PARAMETER; 726 } 727 728 if ((dst & mask) || (src & mask) || (op > 1)) { 729 return H_PARAMETER; 730 } 731 732 if (dst >= src && dst < (src + (count << esize))) { 733 dst = dst + ((count - 1) << esize); 734 src = src + ((count - 1) << esize); 735 step = -step; 736 } 737 738 while (count--) { 739 switch (esize) { 740 case 0: 741 tmp = ldub_phys(cs->as, src); 742 break; 743 case 1: 744 tmp = lduw_phys(cs->as, src); 745 break; 746 case 2: 747 tmp = ldl_phys(cs->as, src); 748 break; 749 case 3: 750 tmp = ldq_phys(cs->as, src); 751 break; 752 default: 753 return H_PARAMETER; 754 } 755 if (op == 1) { 756 tmp = ~tmp; 757 } 758 switch (esize) { 759 case 0: 760 stb_phys(cs->as, dst, tmp); 761 break; 762 case 1: 763 stw_phys(cs->as, dst, tmp); 764 break; 765 case 2: 766 stl_phys(cs->as, dst, tmp); 767 break; 768 case 3: 769 stq_phys(cs->as, dst, tmp); 770 break; 771 } 772 dst = dst + step; 773 src = src + step; 774 } 775 776 return H_SUCCESS; 777 } 778 779 static target_ulong h_logical_icbi(PowerPCCPU *cpu, SpaprMachineState *spapr, 780 target_ulong opcode, target_ulong *args) 781 { 782 /* Nothing to do on emulation, KVM will trap this in the kernel */ 783 return H_SUCCESS; 784 } 785 786 static target_ulong h_logical_dcbf(PowerPCCPU *cpu, SpaprMachineState *spapr, 787 target_ulong opcode, target_ulong *args) 788 { 789 /* Nothing to do on emulation, KVM will trap this in the kernel */ 790 return H_SUCCESS; 791 } 792 793 static target_ulong h_set_mode_resource_set_ciabr(PowerPCCPU *cpu, 794 SpaprMachineState *spapr, 795 target_ulong mflags, 796 target_ulong value1, 797 target_ulong value2) 798 { 799 CPUPPCState *env = &cpu->env; 800 801 assert(tcg_enabled()); /* KVM will have handled this */ 802 803 if (mflags) { 804 return H_UNSUPPORTED_FLAG; 805 } 806 if (value2) { 807 return H_P4; 808 } 809 if ((value1 & PPC_BITMASK(62, 63)) == 0x3) { 810 return H_P3; 811 } 812 813 ppc_store_ciabr(env, value1); 814 815 return H_SUCCESS; 816 } 817 818 static target_ulong h_set_mode_resource_set_dawr0(PowerPCCPU *cpu, 819 SpaprMachineState *spapr, 820 target_ulong mflags, 821 target_ulong value1, 822 target_ulong value2) 823 { 824 CPUPPCState *env = &cpu->env; 825 826 assert(tcg_enabled()); /* KVM will have handled this */ 827 828 if (mflags) { 829 return H_UNSUPPORTED_FLAG; 830 } 831 if (value2 & PPC_BIT(61)) { 832 return H_P4; 833 } 834 835 ppc_store_dawr0(env, value1); 836 ppc_store_dawrx0(env, value2); 837 838 return H_SUCCESS; 839 } 840 841 static target_ulong h_set_mode_resource_le(PowerPCCPU *cpu, 842 SpaprMachineState *spapr, 843 target_ulong mflags, 844 target_ulong value1, 845 target_ulong value2) 846 { 847 if (value1) { 848 return H_P3; 849 } 850 if (value2) { 851 return H_P4; 852 } 853 854 switch (mflags) { 855 case H_SET_MODE_ENDIAN_BIG: 856 spapr_set_all_lpcrs(0, LPCR_ILE); 857 spapr_pci_switch_vga(spapr, true); 858 return H_SUCCESS; 859 860 case H_SET_MODE_ENDIAN_LITTLE: 861 spapr_set_all_lpcrs(LPCR_ILE, LPCR_ILE); 862 spapr_pci_switch_vga(spapr, false); 863 return H_SUCCESS; 864 } 865 866 return H_UNSUPPORTED_FLAG; 867 } 868 869 static target_ulong h_set_mode_resource_addr_trans_mode(PowerPCCPU *cpu, 870 SpaprMachineState *spapr, 871 target_ulong mflags, 872 target_ulong value1, 873 target_ulong value2) 874 { 875 if (value1) { 876 return H_P3; 877 } 878 879 if (value2) { 880 return H_P4; 881 } 882 883 /* 884 * AIL-1 is not architected, and AIL-2 is not supported by QEMU spapr. 885 * It is supported for faithful emulation of bare metal systems, but for 886 * compatibility concerns we leave it out of the pseries machine. 887 */ 888 if (mflags != 0 && mflags != 3) { 889 return H_UNSUPPORTED_FLAG; 890 } 891 892 if (mflags == 3) { 893 if (!spapr_get_cap(spapr, SPAPR_CAP_AIL_MODE_3)) { 894 return H_UNSUPPORTED_FLAG; 895 } 896 } 897 898 spapr_set_all_lpcrs(mflags << LPCR_AIL_SHIFT, LPCR_AIL); 899 900 return H_SUCCESS; 901 } 902 903 static target_ulong h_set_mode(PowerPCCPU *cpu, SpaprMachineState *spapr, 904 target_ulong opcode, target_ulong *args) 905 { 906 target_ulong resource = args[1]; 907 target_ulong ret = H_P2; 908 909 switch (resource) { 910 case H_SET_MODE_RESOURCE_SET_CIABR: 911 ret = h_set_mode_resource_set_ciabr(cpu, spapr, args[0], args[2], 912 args[3]); 913 break; 914 case H_SET_MODE_RESOURCE_SET_DAWR0: 915 ret = h_set_mode_resource_set_dawr0(cpu, spapr, args[0], args[2], 916 args[3]); 917 break; 918 case H_SET_MODE_RESOURCE_LE: 919 ret = h_set_mode_resource_le(cpu, spapr, args[0], args[2], args[3]); 920 break; 921 case H_SET_MODE_RESOURCE_ADDR_TRANS_MODE: 922 ret = h_set_mode_resource_addr_trans_mode(cpu, spapr, args[0], 923 args[2], args[3]); 924 break; 925 } 926 927 return ret; 928 } 929 930 static target_ulong h_clean_slb(PowerPCCPU *cpu, SpaprMachineState *spapr, 931 target_ulong opcode, target_ulong *args) 932 { 933 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x"TARGET_FMT_lx"%s\n", 934 opcode, " (H_CLEAN_SLB)"); 935 return H_FUNCTION; 936 } 937 938 static target_ulong h_invalidate_pid(PowerPCCPU *cpu, SpaprMachineState *spapr, 939 target_ulong opcode, target_ulong *args) 940 { 941 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x"TARGET_FMT_lx"%s\n", 942 opcode, " (H_INVALIDATE_PID)"); 943 return H_FUNCTION; 944 } 945 946 static void spapr_check_setup_free_hpt(SpaprMachineState *spapr, 947 uint64_t patbe_old, uint64_t patbe_new) 948 { 949 /* 950 * We have 4 Options: 951 * HASH->HASH || RADIX->RADIX || NOTHING->RADIX : Do Nothing 952 * HASH->RADIX : Free HPT 953 * RADIX->HASH : Allocate HPT 954 * NOTHING->HASH : Allocate HPT 955 * Note: NOTHING implies the case where we said the guest could choose 956 * later and so assumed radix and now it's called H_REG_PROC_TBL 957 */ 958 959 if ((patbe_old & PATE1_GR) == (patbe_new & PATE1_GR)) { 960 /* We assume RADIX, so this catches all the "Do Nothing" cases */ 961 } else if (!(patbe_old & PATE1_GR)) { 962 /* HASH->RADIX : Free HPT */ 963 spapr_free_hpt(spapr); 964 } else if (!(patbe_new & PATE1_GR)) { 965 /* RADIX->HASH || NOTHING->HASH : Allocate HPT */ 966 spapr_setup_hpt(spapr); 967 } 968 return; 969 } 970 971 #define FLAGS_MASK 0x01FULL 972 #define FLAG_MODIFY 0x10 973 #define FLAG_REGISTER 0x08 974 #define FLAG_RADIX 0x04 975 #define FLAG_HASH_PROC_TBL 0x02 976 #define FLAG_GTSE 0x01 977 978 static target_ulong h_register_process_table(PowerPCCPU *cpu, 979 SpaprMachineState *spapr, 980 target_ulong opcode, 981 target_ulong *args) 982 { 983 target_ulong flags = args[0]; 984 target_ulong proc_tbl = args[1]; 985 target_ulong page_size = args[2]; 986 target_ulong table_size = args[3]; 987 target_ulong update_lpcr = 0; 988 target_ulong table_byte_size; 989 uint64_t cproc; 990 991 if (flags & ~FLAGS_MASK) { /* Check no reserved bits are set */ 992 return H_PARAMETER; 993 } 994 if (flags & FLAG_MODIFY) { 995 if (flags & FLAG_REGISTER) { 996 /* Check process table alignment */ 997 table_byte_size = 1ULL << (table_size + 12); 998 if (proc_tbl & (table_byte_size - 1)) { 999 qemu_log_mask(LOG_GUEST_ERROR, 1000 "%s: process table not properly aligned: proc_tbl 0x" 1001 TARGET_FMT_lx" proc_tbl_size 0x"TARGET_FMT_lx"\n", 1002 __func__, proc_tbl, table_byte_size); 1003 } 1004 if (flags & FLAG_RADIX) { /* Register new RADIX process table */ 1005 if (proc_tbl & 0xfff || proc_tbl >> 60) { 1006 return H_P2; 1007 } else if (page_size) { 1008 return H_P3; 1009 } else if (table_size > 24) { 1010 return H_P4; 1011 } 1012 cproc = PATE1_GR | proc_tbl | table_size; 1013 } else { /* Register new HPT process table */ 1014 if (flags & FLAG_HASH_PROC_TBL) { /* Hash with Segment Tables */ 1015 /* TODO - Not Supported */ 1016 /* Technically caused by flag bits => H_PARAMETER */ 1017 return H_PARAMETER; 1018 } else { /* Hash with SLB */ 1019 if (proc_tbl >> 38) { 1020 return H_P2; 1021 } else if (page_size & ~0x7) { 1022 return H_P3; 1023 } else if (table_size > 24) { 1024 return H_P4; 1025 } 1026 } 1027 cproc = (proc_tbl << 25) | page_size << 5 | table_size; 1028 } 1029 1030 } else { /* Deregister current process table */ 1031 /* 1032 * Set to benign value: (current GR) | 0. This allows 1033 * deregistration in KVM to succeed even if the radix bit 1034 * in flags doesn't match the radix bit in the old PATE. 1035 */ 1036 cproc = spapr->patb_entry & PATE1_GR; 1037 } 1038 } else { /* Maintain current registration */ 1039 if (!(flags & FLAG_RADIX) != !(spapr->patb_entry & PATE1_GR)) { 1040 /* Technically caused by flag bits => H_PARAMETER */ 1041 return H_PARAMETER; /* Existing Process Table Mismatch */ 1042 } 1043 cproc = spapr->patb_entry; 1044 } 1045 1046 /* Check if we need to setup OR free the hpt */ 1047 spapr_check_setup_free_hpt(spapr, spapr->patb_entry, cproc); 1048 1049 spapr->patb_entry = cproc; /* Save new process table */ 1050 1051 /* Update the UPRT, HR and GTSE bits in the LPCR for all cpus */ 1052 if (flags & FLAG_RADIX) /* Radix must use process tables, also set HR */ 1053 update_lpcr |= (LPCR_UPRT | LPCR_HR); 1054 else if (flags & FLAG_HASH_PROC_TBL) /* Hash with process tables */ 1055 update_lpcr |= LPCR_UPRT; 1056 if (flags & FLAG_GTSE) /* Guest translation shootdown enable */ 1057 update_lpcr |= LPCR_GTSE; 1058 1059 spapr_set_all_lpcrs(update_lpcr, LPCR_UPRT | LPCR_HR | LPCR_GTSE); 1060 1061 if (kvm_enabled()) { 1062 return kvmppc_configure_v3_mmu(cpu, flags & FLAG_RADIX, 1063 flags & FLAG_GTSE, cproc); 1064 } 1065 return H_SUCCESS; 1066 } 1067 1068 #define H_SIGNAL_SYS_RESET_ALL -1 1069 #define H_SIGNAL_SYS_RESET_ALLBUTSELF -2 1070 1071 static target_ulong h_signal_sys_reset(PowerPCCPU *cpu, 1072 SpaprMachineState *spapr, 1073 target_ulong opcode, target_ulong *args) 1074 { 1075 target_long target = args[0]; 1076 CPUState *cs; 1077 1078 if (target < 0) { 1079 /* Broadcast */ 1080 if (target < H_SIGNAL_SYS_RESET_ALLBUTSELF) { 1081 return H_PARAMETER; 1082 } 1083 1084 CPU_FOREACH(cs) { 1085 PowerPCCPU *c = POWERPC_CPU(cs); 1086 1087 if (target == H_SIGNAL_SYS_RESET_ALLBUTSELF) { 1088 if (c == cpu) { 1089 continue; 1090 } 1091 } 1092 run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 1093 } 1094 return H_SUCCESS; 1095 1096 } else { 1097 /* Unicast */ 1098 cs = CPU(spapr_find_cpu(target)); 1099 if (cs) { 1100 run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 1101 return H_SUCCESS; 1102 } 1103 return H_PARAMETER; 1104 } 1105 } 1106 1107 /* Returns either a logical PVR or zero if none was found */ 1108 static uint32_t cas_check_pvr(PowerPCCPU *cpu, uint32_t max_compat, 1109 target_ulong *addr, bool *raw_mode_supported) 1110 { 1111 bool explicit_match = false; /* Matched the CPU's real PVR */ 1112 uint32_t best_compat = 0; 1113 int i; 1114 1115 /* 1116 * We scan the supplied table of PVRs looking for two things 1117 * 1. Is our real CPU PVR in the list? 1118 * 2. What's the "best" listed logical PVR 1119 */ 1120 for (i = 0; i < 512; ++i) { 1121 uint32_t pvr, pvr_mask; 1122 1123 pvr_mask = ldl_be_phys(&address_space_memory, *addr); 1124 pvr = ldl_be_phys(&address_space_memory, *addr + 4); 1125 *addr += 8; 1126 1127 if (~pvr_mask & pvr) { 1128 break; /* Terminator record */ 1129 } 1130 1131 if ((cpu->env.spr[SPR_PVR] & pvr_mask) == (pvr & pvr_mask)) { 1132 explicit_match = true; 1133 } else { 1134 if (ppc_check_compat(cpu, pvr, best_compat, max_compat)) { 1135 best_compat = pvr; 1136 } 1137 } 1138 } 1139 1140 *raw_mode_supported = explicit_match; 1141 1142 /* Parsing finished */ 1143 trace_spapr_cas_pvr(cpu->compat_pvr, explicit_match, best_compat); 1144 1145 return best_compat; 1146 } 1147 1148 static 1149 target_ulong do_client_architecture_support(PowerPCCPU *cpu, 1150 SpaprMachineState *spapr, 1151 target_ulong vec, 1152 target_ulong fdt_bufsize) 1153 { 1154 target_ulong ov_table; /* Working address in data buffer */ 1155 uint32_t cas_pvr; 1156 SpaprOptionVector *ov1_guest, *ov5_guest; 1157 bool guest_radix; 1158 bool raw_mode_supported = false; 1159 bool guest_xive; 1160 CPUState *cs; 1161 void *fdt; 1162 uint32_t max_compat = spapr->max_compat_pvr; 1163 1164 /* CAS is supposed to be called early when only the boot vCPU is active. */ 1165 CPU_FOREACH(cs) { 1166 if (cs == CPU(cpu)) { 1167 continue; 1168 } 1169 if (!cs->halted) { 1170 warn_report("guest has multiple active vCPUs at CAS, which is not allowed"); 1171 return H_MULTI_THREADS_ACTIVE; 1172 } 1173 } 1174 1175 cas_pvr = cas_check_pvr(cpu, max_compat, &vec, &raw_mode_supported); 1176 if (!cas_pvr && (!raw_mode_supported || max_compat)) { 1177 /* 1178 * We couldn't find a suitable compatibility mode, and either 1179 * the guest doesn't support "raw" mode for this CPU, or "raw" 1180 * mode is disabled because a maximum compat mode is set. 1181 */ 1182 error_report("Couldn't negotiate a suitable PVR during CAS"); 1183 return H_HARDWARE; 1184 } 1185 1186 /* Update CPUs */ 1187 if (cpu->compat_pvr != cas_pvr) { 1188 Error *local_err = NULL; 1189 1190 if (ppc_set_compat_all(cas_pvr, &local_err) < 0) { 1191 /* We fail to set compat mode (likely because running with KVM PR), 1192 * but maybe we can fallback to raw mode if the guest supports it. 1193 */ 1194 if (!raw_mode_supported) { 1195 error_report_err(local_err); 1196 return H_HARDWARE; 1197 } 1198 error_free(local_err); 1199 } 1200 } 1201 1202 /* For the future use: here @ov_table points to the first option vector */ 1203 ov_table = vec; 1204 1205 ov1_guest = spapr_ovec_parse_vector(ov_table, 1); 1206 if (!ov1_guest) { 1207 warn_report("guest didn't provide option vector 1"); 1208 return H_PARAMETER; 1209 } 1210 ov5_guest = spapr_ovec_parse_vector(ov_table, 5); 1211 if (!ov5_guest) { 1212 spapr_ovec_cleanup(ov1_guest); 1213 warn_report("guest didn't provide option vector 5"); 1214 return H_PARAMETER; 1215 } 1216 if (spapr_ovec_test(ov5_guest, OV5_MMU_BOTH)) { 1217 error_report("guest requested hash and radix MMU, which is invalid."); 1218 exit(EXIT_FAILURE); 1219 } 1220 if (spapr_ovec_test(ov5_guest, OV5_XIVE_BOTH)) { 1221 error_report("guest requested an invalid interrupt mode"); 1222 exit(EXIT_FAILURE); 1223 } 1224 1225 guest_radix = spapr_ovec_test(ov5_guest, OV5_MMU_RADIX_300); 1226 1227 guest_xive = spapr_ovec_test(ov5_guest, OV5_XIVE_EXPLOIT); 1228 1229 /* 1230 * HPT resizing is a bit of a special case, because when enabled 1231 * we assume an HPT guest will support it until it says it 1232 * doesn't, instead of assuming it won't support it until it says 1233 * it does. Strictly speaking that approach could break for 1234 * guests which don't make a CAS call, but those are so old we 1235 * don't care about them. Without that assumption we'd have to 1236 * make at least a temporary allocation of an HPT sized for max 1237 * memory, which could be impossibly difficult under KVM HV if 1238 * maxram is large. 1239 */ 1240 if (!guest_radix && !spapr_ovec_test(ov5_guest, OV5_HPT_RESIZE)) { 1241 int maxshift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); 1242 1243 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_REQUIRED) { 1244 error_report( 1245 "h_client_architecture_support: Guest doesn't support HPT resizing, but resize-hpt=required"); 1246 exit(1); 1247 } 1248 1249 if (spapr->htab_shift < maxshift) { 1250 /* Guest doesn't know about HPT resizing, so we 1251 * pre-emptively resize for the maximum permitted RAM. At 1252 * the point this is called, nothing should have been 1253 * entered into the existing HPT */ 1254 spapr_reallocate_hpt(spapr, maxshift, &error_fatal); 1255 push_sregs_to_kvm_pr(spapr); 1256 } 1257 } 1258 1259 /* NOTE: there are actually a number of ov5 bits where input from the 1260 * guest is always zero, and the platform/QEMU enables them independently 1261 * of guest input. To model these properly we'd want some sort of mask, 1262 * but since they only currently apply to memory migration as defined 1263 * by LoPAPR 1.1, 14.5.4.8, which QEMU doesn't implement, we don't need 1264 * to worry about this for now. 1265 */ 1266 1267 /* full range of negotiated ov5 capabilities */ 1268 spapr_ovec_intersect(spapr->ov5_cas, spapr->ov5, ov5_guest); 1269 spapr_ovec_cleanup(ov5_guest); 1270 1271 spapr_check_mmu_mode(guest_radix); 1272 1273 spapr->cas_pre_isa3_guest = !spapr_ovec_test(ov1_guest, OV1_PPC_3_00); 1274 spapr_ovec_cleanup(ov1_guest); 1275 1276 /* 1277 * Check for NUMA affinity conditions now that we know which NUMA 1278 * affinity the guest will use. 1279 */ 1280 spapr_numa_associativity_check(spapr); 1281 1282 /* 1283 * Ensure the guest asks for an interrupt mode we support; 1284 * otherwise terminate the boot. 1285 */ 1286 if (guest_xive) { 1287 if (!spapr->irq->xive) { 1288 error_report( 1289 "Guest requested unavailable interrupt mode (XIVE), try the ic-mode=xive or ic-mode=dual machine property"); 1290 exit(EXIT_FAILURE); 1291 } 1292 } else { 1293 if (!spapr->irq->xics) { 1294 error_report( 1295 "Guest requested unavailable interrupt mode (XICS), either don't set the ic-mode machine property or try ic-mode=xics or ic-mode=dual"); 1296 exit(EXIT_FAILURE); 1297 } 1298 } 1299 1300 spapr_irq_update_active_intc(spapr); 1301 1302 /* 1303 * Process all pending hot-plug/unplug requests now. An updated full 1304 * rendered FDT will be returned to the guest. 1305 */ 1306 spapr_drc_reset_all(spapr); 1307 spapr_clear_pending_hotplug_events(spapr); 1308 1309 /* 1310 * If spapr_machine_reset() did not set up a HPT but one is necessary 1311 * (because the guest isn't going to use radix) then set it up here. 1312 */ 1313 if ((spapr->patb_entry & PATE1_GR) && !guest_radix) { 1314 /* legacy hash or new hash: */ 1315 spapr_setup_hpt(spapr); 1316 } 1317 1318 fdt = spapr_build_fdt(spapr, spapr->vof != NULL, fdt_bufsize); 1319 g_free(spapr->fdt_blob); 1320 spapr->fdt_size = fdt_totalsize(fdt); 1321 spapr->fdt_initial_size = spapr->fdt_size; 1322 spapr->fdt_blob = fdt; 1323 1324 /* 1325 * Set the machine->fdt pointer again since we just freed 1326 * it above (by freeing spapr->fdt_blob). We set this 1327 * pointer to enable support for the 'dumpdtb' QMP/HMP 1328 * command. 1329 */ 1330 MACHINE(spapr)->fdt = fdt; 1331 1332 return H_SUCCESS; 1333 } 1334 1335 static target_ulong h_client_architecture_support(PowerPCCPU *cpu, 1336 SpaprMachineState *spapr, 1337 target_ulong opcode, 1338 target_ulong *args) 1339 { 1340 target_ulong vec = ppc64_phys_to_real(args[0]); 1341 target_ulong fdt_buf = args[1]; 1342 target_ulong fdt_bufsize = args[2]; 1343 target_ulong ret; 1344 SpaprDeviceTreeUpdateHeader hdr = { .version_id = 1 }; 1345 1346 if (fdt_bufsize < sizeof(hdr)) { 1347 error_report("SLOF provided insufficient CAS buffer " 1348 TARGET_FMT_lu " (min: %zu)", fdt_bufsize, sizeof(hdr)); 1349 exit(EXIT_FAILURE); 1350 } 1351 1352 fdt_bufsize -= sizeof(hdr); 1353 1354 ret = do_client_architecture_support(cpu, spapr, vec, fdt_bufsize); 1355 if (ret == H_SUCCESS) { 1356 _FDT((fdt_pack(spapr->fdt_blob))); 1357 spapr->fdt_size = fdt_totalsize(spapr->fdt_blob); 1358 spapr->fdt_initial_size = spapr->fdt_size; 1359 1360 cpu_physical_memory_write(fdt_buf, &hdr, sizeof(hdr)); 1361 cpu_physical_memory_write(fdt_buf + sizeof(hdr), spapr->fdt_blob, 1362 spapr->fdt_size); 1363 trace_spapr_cas_continue(spapr->fdt_size + sizeof(hdr)); 1364 } 1365 1366 return ret; 1367 } 1368 1369 target_ulong spapr_vof_client_architecture_support(MachineState *ms, 1370 CPUState *cs, 1371 target_ulong ovec_addr) 1372 { 1373 SpaprMachineState *spapr = SPAPR_MACHINE(ms); 1374 1375 target_ulong ret = do_client_architecture_support(POWERPC_CPU(cs), spapr, 1376 ovec_addr, FDT_MAX_SIZE); 1377 1378 /* 1379 * This adds stdout and generates phandles for boottime and CAS FDTs. 1380 * It is alright to update the FDT here as do_client_architecture_support() 1381 * does not pack it. 1382 */ 1383 spapr_vof_client_dt_finalize(spapr, spapr->fdt_blob); 1384 1385 return ret; 1386 } 1387 1388 static target_ulong h_get_cpu_characteristics(PowerPCCPU *cpu, 1389 SpaprMachineState *spapr, 1390 target_ulong opcode, 1391 target_ulong *args) 1392 { 1393 uint64_t characteristics = H_CPU_CHAR_HON_BRANCH_HINTS & 1394 ~H_CPU_CHAR_THR_RECONF_TRIG; 1395 uint64_t behaviour = H_CPU_BEHAV_FAVOUR_SECURITY; 1396 uint8_t safe_cache = spapr_get_cap(spapr, SPAPR_CAP_CFPC); 1397 uint8_t safe_bounds_check = spapr_get_cap(spapr, SPAPR_CAP_SBBC); 1398 uint8_t safe_indirect_branch = spapr_get_cap(spapr, SPAPR_CAP_IBS); 1399 uint8_t count_cache_flush_assist = spapr_get_cap(spapr, 1400 SPAPR_CAP_CCF_ASSIST); 1401 1402 switch (safe_cache) { 1403 case SPAPR_CAP_WORKAROUND: 1404 characteristics |= H_CPU_CHAR_L1D_FLUSH_ORI30; 1405 characteristics |= H_CPU_CHAR_L1D_FLUSH_TRIG2; 1406 characteristics |= H_CPU_CHAR_L1D_THREAD_PRIV; 1407 behaviour |= H_CPU_BEHAV_L1D_FLUSH_PR; 1408 break; 1409 case SPAPR_CAP_FIXED: 1410 behaviour |= H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY; 1411 behaviour |= H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS; 1412 break; 1413 default: /* broken */ 1414 assert(safe_cache == SPAPR_CAP_BROKEN); 1415 behaviour |= H_CPU_BEHAV_L1D_FLUSH_PR; 1416 break; 1417 } 1418 1419 switch (safe_bounds_check) { 1420 case SPAPR_CAP_WORKAROUND: 1421 characteristics |= H_CPU_CHAR_SPEC_BAR_ORI31; 1422 behaviour |= H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; 1423 break; 1424 case SPAPR_CAP_FIXED: 1425 break; 1426 default: /* broken */ 1427 assert(safe_bounds_check == SPAPR_CAP_BROKEN); 1428 behaviour |= H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; 1429 break; 1430 } 1431 1432 switch (safe_indirect_branch) { 1433 case SPAPR_CAP_FIXED_NA: 1434 break; 1435 case SPAPR_CAP_FIXED_CCD: 1436 characteristics |= H_CPU_CHAR_CACHE_COUNT_DIS; 1437 break; 1438 case SPAPR_CAP_FIXED_IBS: 1439 characteristics |= H_CPU_CHAR_BCCTRL_SERIALISED; 1440 break; 1441 case SPAPR_CAP_WORKAROUND: 1442 behaviour |= H_CPU_BEHAV_FLUSH_COUNT_CACHE; 1443 if (count_cache_flush_assist) { 1444 characteristics |= H_CPU_CHAR_BCCTR_FLUSH_ASSIST; 1445 } 1446 break; 1447 default: /* broken */ 1448 assert(safe_indirect_branch == SPAPR_CAP_BROKEN); 1449 break; 1450 } 1451 1452 args[0] = characteristics; 1453 args[1] = behaviour; 1454 return H_SUCCESS; 1455 } 1456 1457 static target_ulong h_update_dt(PowerPCCPU *cpu, SpaprMachineState *spapr, 1458 target_ulong opcode, target_ulong *args) 1459 { 1460 target_ulong dt = ppc64_phys_to_real(args[0]); 1461 struct fdt_header hdr = { 0 }; 1462 unsigned cb; 1463 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 1464 void *fdt; 1465 1466 cpu_physical_memory_read(dt, &hdr, sizeof(hdr)); 1467 cb = fdt32_to_cpu(hdr.totalsize); 1468 1469 if (!smc->update_dt_enabled) { 1470 return H_SUCCESS; 1471 } 1472 1473 /* Check that the fdt did not grow out of proportion */ 1474 if (cb > spapr->fdt_initial_size * 2) { 1475 trace_spapr_update_dt_failed_size(spapr->fdt_initial_size, cb, 1476 fdt32_to_cpu(hdr.magic)); 1477 return H_PARAMETER; 1478 } 1479 1480 fdt = g_malloc0(cb); 1481 cpu_physical_memory_read(dt, fdt, cb); 1482 1483 /* Check the fdt consistency */ 1484 if (fdt_check_full(fdt, cb)) { 1485 trace_spapr_update_dt_failed_check(spapr->fdt_initial_size, cb, 1486 fdt32_to_cpu(hdr.magic)); 1487 return H_PARAMETER; 1488 } 1489 1490 g_free(spapr->fdt_blob); 1491 spapr->fdt_size = cb; 1492 spapr->fdt_blob = fdt; 1493 trace_spapr_update_dt(cb); 1494 1495 return H_SUCCESS; 1496 } 1497 1498 static spapr_hcall_fn papr_hypercall_table[(MAX_HCALL_OPCODE / 4) + 1]; 1499 static spapr_hcall_fn kvmppc_hypercall_table[KVMPPC_HCALL_MAX - KVMPPC_HCALL_BASE + 1]; 1500 static spapr_hcall_fn svm_hypercall_table[(SVM_HCALL_MAX - SVM_HCALL_BASE) / 4 + 1]; 1501 1502 void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn) 1503 { 1504 spapr_hcall_fn *slot; 1505 1506 if (opcode <= MAX_HCALL_OPCODE) { 1507 assert((opcode & 0x3) == 0); 1508 1509 slot = &papr_hypercall_table[opcode / 4]; 1510 } else if (opcode >= SVM_HCALL_BASE && opcode <= SVM_HCALL_MAX) { 1511 /* we only have SVM-related hcall numbers assigned in multiples of 4 */ 1512 assert((opcode & 0x3) == 0); 1513 1514 slot = &svm_hypercall_table[(opcode - SVM_HCALL_BASE) / 4]; 1515 } else { 1516 assert((opcode >= KVMPPC_HCALL_BASE) && (opcode <= KVMPPC_HCALL_MAX)); 1517 1518 slot = &kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE]; 1519 } 1520 1521 assert(!(*slot)); 1522 *slot = fn; 1523 } 1524 1525 target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, 1526 target_ulong *args) 1527 { 1528 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 1529 1530 if ((opcode <= MAX_HCALL_OPCODE) 1531 && ((opcode & 0x3) == 0)) { 1532 spapr_hcall_fn fn = papr_hypercall_table[opcode / 4]; 1533 1534 if (fn) { 1535 return fn(cpu, spapr, opcode, args); 1536 } 1537 } else if ((opcode >= SVM_HCALL_BASE) && 1538 (opcode <= SVM_HCALL_MAX)) { 1539 spapr_hcall_fn fn = svm_hypercall_table[(opcode - SVM_HCALL_BASE) / 4]; 1540 1541 if (fn) { 1542 return fn(cpu, spapr, opcode, args); 1543 } 1544 } else if ((opcode >= KVMPPC_HCALL_BASE) && 1545 (opcode <= KVMPPC_HCALL_MAX)) { 1546 spapr_hcall_fn fn = kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE]; 1547 1548 if (fn) { 1549 return fn(cpu, spapr, opcode, args); 1550 } 1551 } 1552 1553 qemu_log_mask(LOG_UNIMP, "Unimplemented SPAPR hcall 0x" TARGET_FMT_lx "\n", 1554 opcode); 1555 return H_FUNCTION; 1556 } 1557 1558 #ifdef CONFIG_TCG 1559 static void hypercall_register_softmmu(void) 1560 { 1561 /* DO NOTHING */ 1562 } 1563 #else 1564 static target_ulong h_softmmu(PowerPCCPU *cpu, SpaprMachineState *spapr, 1565 target_ulong opcode, target_ulong *args) 1566 { 1567 g_assert_not_reached(); 1568 } 1569 1570 static void hypercall_register_softmmu(void) 1571 { 1572 /* hcall-pft */ 1573 spapr_register_hypercall(H_ENTER, h_softmmu); 1574 spapr_register_hypercall(H_REMOVE, h_softmmu); 1575 spapr_register_hypercall(H_PROTECT, h_softmmu); 1576 spapr_register_hypercall(H_READ, h_softmmu); 1577 1578 /* hcall-bulk */ 1579 spapr_register_hypercall(H_BULK_REMOVE, h_softmmu); 1580 } 1581 #endif 1582 1583 static void hypercall_register_types(void) 1584 { 1585 hypercall_register_softmmu(); 1586 1587 /* hcall-hpt-resize */ 1588 spapr_register_hypercall(H_RESIZE_HPT_PREPARE, h_resize_hpt_prepare); 1589 spapr_register_hypercall(H_RESIZE_HPT_COMMIT, h_resize_hpt_commit); 1590 1591 /* hcall-splpar */ 1592 spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); 1593 spapr_register_hypercall(H_CEDE, h_cede); 1594 spapr_register_hypercall(H_CONFER, h_confer); 1595 spapr_register_hypercall(H_PROD, h_prod); 1596 1597 /* hcall-join */ 1598 spapr_register_hypercall(H_JOIN, h_join); 1599 1600 spapr_register_hypercall(H_SIGNAL_SYS_RESET, h_signal_sys_reset); 1601 1602 /* processor register resource access h-calls */ 1603 spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0); 1604 spapr_register_hypercall(H_SET_DABR, h_set_dabr); 1605 spapr_register_hypercall(H_SET_XDABR, h_set_xdabr); 1606 spapr_register_hypercall(H_PAGE_INIT, h_page_init); 1607 spapr_register_hypercall(H_SET_MODE, h_set_mode); 1608 1609 /* In Memory Table MMU h-calls */ 1610 spapr_register_hypercall(H_CLEAN_SLB, h_clean_slb); 1611 spapr_register_hypercall(H_INVALIDATE_PID, h_invalidate_pid); 1612 spapr_register_hypercall(H_REGISTER_PROC_TBL, h_register_process_table); 1613 1614 /* hcall-get-cpu-characteristics */ 1615 spapr_register_hypercall(H_GET_CPU_CHARACTERISTICS, 1616 h_get_cpu_characteristics); 1617 1618 /* "debugger" hcalls (also used by SLOF). Note: We do -not- differentiate 1619 * here between the "CI" and the "CACHE" variants, they will use whatever 1620 * mapping attributes qemu is using. When using KVM, the kernel will 1621 * enforce the attributes more strongly 1622 */ 1623 spapr_register_hypercall(H_LOGICAL_CI_LOAD, h_logical_load); 1624 spapr_register_hypercall(H_LOGICAL_CI_STORE, h_logical_store); 1625 spapr_register_hypercall(H_LOGICAL_CACHE_LOAD, h_logical_load); 1626 spapr_register_hypercall(H_LOGICAL_CACHE_STORE, h_logical_store); 1627 spapr_register_hypercall(H_LOGICAL_ICBI, h_logical_icbi); 1628 spapr_register_hypercall(H_LOGICAL_DCBF, h_logical_dcbf); 1629 spapr_register_hypercall(KVMPPC_H_LOGICAL_MEMOP, h_logical_memop); 1630 1631 /* qemu/KVM-PPC specific hcalls */ 1632 spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); 1633 1634 /* ibm,client-architecture-support support */ 1635 spapr_register_hypercall(KVMPPC_H_CAS, h_client_architecture_support); 1636 1637 spapr_register_hypercall(KVMPPC_H_UPDATE_DT, h_update_dt); 1638 1639 spapr_register_nested(); 1640 } 1641 1642 type_init(hypercall_register_types) 1643