1 /* 2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator 3 * 4 * Copyright (c) 2004-2007 Fabrice Bellard 5 * Copyright (c) 2007 Jocelyn Mayer 6 * Copyright (c) 2010 David Gibson, IBM Corporation. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 * 26 */ 27 #include "sysemu/sysemu.h" 28 #include "sysemu/numa.h" 29 #include "hw/hw.h" 30 #include "hw/fw-path-provider.h" 31 #include "elf.h" 32 #include "net/net.h" 33 #include "sysemu/device_tree.h" 34 #include "sysemu/block-backend.h" 35 #include "sysemu/cpus.h" 36 #include "sysemu/kvm.h" 37 #include "sysemu/device_tree.h" 38 #include "kvm_ppc.h" 39 #include "migration/migration.h" 40 #include "mmu-hash64.h" 41 #include "qom/cpu.h" 42 43 #include "hw/boards.h" 44 #include "hw/ppc/ppc.h" 45 #include "hw/loader.h" 46 47 #include "hw/ppc/spapr.h" 48 #include "hw/ppc/spapr_vio.h" 49 #include "hw/pci-host/spapr.h" 50 #include "hw/ppc/xics.h" 51 #include "hw/pci/msi.h" 52 53 #include "hw/pci/pci.h" 54 #include "hw/scsi/scsi.h" 55 #include "hw/virtio/virtio-scsi.h" 56 57 #include "exec/address-spaces.h" 58 #include "hw/usb.h" 59 #include "qemu/config-file.h" 60 #include "qemu/error-report.h" 61 #include "trace.h" 62 #include "hw/nmi.h" 63 64 #include "hw/compat.h" 65 #include "qemu-common.h" 66 67 #include <libfdt.h> 68 69 /* SLOF memory layout: 70 * 71 * SLOF raw image loaded at 0, copies its romfs right below the flat 72 * device-tree, then position SLOF itself 31M below that 73 * 74 * So we set FW_OVERHEAD to 40MB which should account for all of that 75 * and more 76 * 77 * We load our kernel at 4M, leaving space for SLOF initial image 78 */ 79 #define FDT_MAX_SIZE 0x100000 80 #define RTAS_MAX_SIZE 0x10000 81 #define RTAS_MAX_ADDR 0x80000000 /* RTAS must stay below that */ 82 #define FW_MAX_SIZE 0x400000 83 #define FW_FILE_NAME "slof.bin" 84 #define FW_OVERHEAD 0x2800000 85 #define KERNEL_LOAD_ADDR FW_MAX_SIZE 86 87 #define MIN_RMA_SLOF 128UL 88 89 #define TIMEBASE_FREQ 512000000ULL 90 91 #define PHANDLE_XICP 0x00001111 92 93 #define HTAB_SIZE(spapr) (1ULL << ((spapr)->htab_shift)) 94 95 static XICSState *try_create_xics(const char *type, int nr_servers, 96 int nr_irqs, Error **errp) 97 { 98 Error *err = NULL; 99 DeviceState *dev; 100 101 dev = qdev_create(NULL, type); 102 qdev_prop_set_uint32(dev, "nr_servers", nr_servers); 103 qdev_prop_set_uint32(dev, "nr_irqs", nr_irqs); 104 object_property_set_bool(OBJECT(dev), true, "realized", &err); 105 if (err) { 106 error_propagate(errp, err); 107 object_unparent(OBJECT(dev)); 108 return NULL; 109 } 110 return XICS_COMMON(dev); 111 } 112 113 static XICSState *xics_system_init(MachineState *machine, 114 int nr_servers, int nr_irqs) 115 { 116 XICSState *icp = NULL; 117 118 if (kvm_enabled()) { 119 Error *err = NULL; 120 121 if (machine_kernel_irqchip_allowed(machine)) { 122 icp = try_create_xics(TYPE_KVM_XICS, nr_servers, nr_irqs, &err); 123 } 124 if (machine_kernel_irqchip_required(machine) && !icp) { 125 error_report("kernel_irqchip requested but unavailable: %s", 126 error_get_pretty(err)); 127 } 128 } 129 130 if (!icp) { 131 icp = try_create_xics(TYPE_XICS, nr_servers, nr_irqs, &error_abort); 132 } 133 134 return icp; 135 } 136 137 static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, 138 int smt_threads) 139 { 140 int i, ret = 0; 141 uint32_t servers_prop[smt_threads]; 142 uint32_t gservers_prop[smt_threads * 2]; 143 int index = ppc_get_vcpu_dt_id(cpu); 144 145 if (cpu->cpu_version) { 146 ret = fdt_setprop_cell(fdt, offset, "cpu-version", cpu->cpu_version); 147 if (ret < 0) { 148 return ret; 149 } 150 } 151 152 /* Build interrupt servers and gservers properties */ 153 for (i = 0; i < smt_threads; i++) { 154 servers_prop[i] = cpu_to_be32(index + i); 155 /* Hack, direct the group queues back to cpu 0 */ 156 gservers_prop[i*2] = cpu_to_be32(index + i); 157 gservers_prop[i*2 + 1] = 0; 158 } 159 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s", 160 servers_prop, sizeof(servers_prop)); 161 if (ret < 0) { 162 return ret; 163 } 164 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s", 165 gservers_prop, sizeof(gservers_prop)); 166 167 return ret; 168 } 169 170 static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, CPUState *cs) 171 { 172 int ret = 0; 173 PowerPCCPU *cpu = POWERPC_CPU(cs); 174 int index = ppc_get_vcpu_dt_id(cpu); 175 uint32_t associativity[] = {cpu_to_be32(0x5), 176 cpu_to_be32(0x0), 177 cpu_to_be32(0x0), 178 cpu_to_be32(0x0), 179 cpu_to_be32(cs->numa_node), 180 cpu_to_be32(index)}; 181 182 /* Advertise NUMA via ibm,associativity */ 183 if (nb_numa_nodes > 1) { 184 ret = fdt_setprop(fdt, offset, "ibm,associativity", associativity, 185 sizeof(associativity)); 186 } 187 188 return ret; 189 } 190 191 static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) 192 { 193 int ret = 0, offset, cpus_offset; 194 CPUState *cs; 195 char cpu_model[32]; 196 int smt = kvmppc_smt_threads(); 197 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 198 199 CPU_FOREACH(cs) { 200 PowerPCCPU *cpu = POWERPC_CPU(cs); 201 DeviceClass *dc = DEVICE_GET_CLASS(cs); 202 int index = ppc_get_vcpu_dt_id(cpu); 203 204 if ((index % smt) != 0) { 205 continue; 206 } 207 208 snprintf(cpu_model, 32, "%s@%x", dc->fw_name, index); 209 210 cpus_offset = fdt_path_offset(fdt, "/cpus"); 211 if (cpus_offset < 0) { 212 cpus_offset = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), 213 "cpus"); 214 if (cpus_offset < 0) { 215 return cpus_offset; 216 } 217 } 218 offset = fdt_subnode_offset(fdt, cpus_offset, cpu_model); 219 if (offset < 0) { 220 offset = fdt_add_subnode(fdt, cpus_offset, cpu_model); 221 if (offset < 0) { 222 return offset; 223 } 224 } 225 226 ret = fdt_setprop(fdt, offset, "ibm,pft-size", 227 pft_size_prop, sizeof(pft_size_prop)); 228 if (ret < 0) { 229 return ret; 230 } 231 232 ret = spapr_fixup_cpu_numa_dt(fdt, offset, cs); 233 if (ret < 0) { 234 return ret; 235 } 236 237 ret = spapr_fixup_cpu_smt_dt(fdt, offset, cpu, 238 ppc_get_compat_smt_threads(cpu)); 239 if (ret < 0) { 240 return ret; 241 } 242 } 243 return ret; 244 } 245 246 247 static size_t create_page_sizes_prop(CPUPPCState *env, uint32_t *prop, 248 size_t maxsize) 249 { 250 size_t maxcells = maxsize / sizeof(uint32_t); 251 int i, j, count; 252 uint32_t *p = prop; 253 254 for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { 255 struct ppc_one_seg_page_size *sps = &env->sps.sps[i]; 256 257 if (!sps->page_shift) { 258 break; 259 } 260 for (count = 0; count < PPC_PAGE_SIZES_MAX_SZ; count++) { 261 if (sps->enc[count].page_shift == 0) { 262 break; 263 } 264 } 265 if ((p - prop) >= (maxcells - 3 - count * 2)) { 266 break; 267 } 268 *(p++) = cpu_to_be32(sps->page_shift); 269 *(p++) = cpu_to_be32(sps->slb_enc); 270 *(p++) = cpu_to_be32(count); 271 for (j = 0; j < count; j++) { 272 *(p++) = cpu_to_be32(sps->enc[j].page_shift); 273 *(p++) = cpu_to_be32(sps->enc[j].pte_enc); 274 } 275 } 276 277 return (p - prop) * sizeof(uint32_t); 278 } 279 280 static hwaddr spapr_node0_size(void) 281 { 282 MachineState *machine = MACHINE(qdev_get_machine()); 283 284 if (nb_numa_nodes) { 285 int i; 286 for (i = 0; i < nb_numa_nodes; ++i) { 287 if (numa_info[i].node_mem) { 288 return MIN(pow2floor(numa_info[i].node_mem), 289 machine->ram_size); 290 } 291 } 292 } 293 return machine->ram_size; 294 } 295 296 #define _FDT(exp) \ 297 do { \ 298 int ret = (exp); \ 299 if (ret < 0) { \ 300 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ 301 #exp, fdt_strerror(ret)); \ 302 exit(1); \ 303 } \ 304 } while (0) 305 306 static void add_str(GString *s, const gchar *s1) 307 { 308 g_string_append_len(s, s1, strlen(s1) + 1); 309 } 310 311 static void *spapr_create_fdt_skel(hwaddr initrd_base, 312 hwaddr initrd_size, 313 hwaddr kernel_size, 314 bool little_endian, 315 const char *kernel_cmdline, 316 uint32_t epow_irq) 317 { 318 void *fdt; 319 uint32_t start_prop = cpu_to_be32(initrd_base); 320 uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size); 321 GString *hypertas = g_string_sized_new(256); 322 GString *qemu_hypertas = g_string_sized_new(256); 323 uint32_t refpoints[] = {cpu_to_be32(0x4), cpu_to_be32(0x4)}; 324 uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(max_cpus)}; 325 unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80}; 326 char *buf; 327 328 add_str(hypertas, "hcall-pft"); 329 add_str(hypertas, "hcall-term"); 330 add_str(hypertas, "hcall-dabr"); 331 add_str(hypertas, "hcall-interrupt"); 332 add_str(hypertas, "hcall-tce"); 333 add_str(hypertas, "hcall-vio"); 334 add_str(hypertas, "hcall-splpar"); 335 add_str(hypertas, "hcall-bulk"); 336 add_str(hypertas, "hcall-set-mode"); 337 add_str(qemu_hypertas, "hcall-memop1"); 338 339 fdt = g_malloc0(FDT_MAX_SIZE); 340 _FDT((fdt_create(fdt, FDT_MAX_SIZE))); 341 342 if (kernel_size) { 343 _FDT((fdt_add_reservemap_entry(fdt, KERNEL_LOAD_ADDR, kernel_size))); 344 } 345 if (initrd_size) { 346 _FDT((fdt_add_reservemap_entry(fdt, initrd_base, initrd_size))); 347 } 348 _FDT((fdt_finish_reservemap(fdt))); 349 350 /* Root node */ 351 _FDT((fdt_begin_node(fdt, ""))); 352 _FDT((fdt_property_string(fdt, "device_type", "chrp"))); 353 _FDT((fdt_property_string(fdt, "model", "IBM pSeries (emulated by qemu)"))); 354 _FDT((fdt_property_string(fdt, "compatible", "qemu,pseries"))); 355 356 /* 357 * Add info to guest to indentify which host is it being run on 358 * and what is the uuid of the guest 359 */ 360 if (kvmppc_get_host_model(&buf)) { 361 _FDT((fdt_property_string(fdt, "host-model", buf))); 362 g_free(buf); 363 } 364 if (kvmppc_get_host_serial(&buf)) { 365 _FDT((fdt_property_string(fdt, "host-serial", buf))); 366 g_free(buf); 367 } 368 369 buf = g_strdup_printf(UUID_FMT, qemu_uuid[0], qemu_uuid[1], 370 qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], 371 qemu_uuid[5], qemu_uuid[6], qemu_uuid[7], 372 qemu_uuid[8], qemu_uuid[9], qemu_uuid[10], 373 qemu_uuid[11], qemu_uuid[12], qemu_uuid[13], 374 qemu_uuid[14], qemu_uuid[15]); 375 376 _FDT((fdt_property_string(fdt, "vm,uuid", buf))); 377 g_free(buf); 378 379 if (qemu_get_vm_name()) { 380 _FDT((fdt_property_string(fdt, "ibm,partition-name", 381 qemu_get_vm_name()))); 382 } 383 384 _FDT((fdt_property_cell(fdt, "#address-cells", 0x2))); 385 _FDT((fdt_property_cell(fdt, "#size-cells", 0x2))); 386 387 /* /chosen */ 388 _FDT((fdt_begin_node(fdt, "chosen"))); 389 390 /* Set Form1_affinity */ 391 _FDT((fdt_property(fdt, "ibm,architecture-vec-5", vec5, sizeof(vec5)))); 392 393 _FDT((fdt_property_string(fdt, "bootargs", kernel_cmdline))); 394 _FDT((fdt_property(fdt, "linux,initrd-start", 395 &start_prop, sizeof(start_prop)))); 396 _FDT((fdt_property(fdt, "linux,initrd-end", 397 &end_prop, sizeof(end_prop)))); 398 if (kernel_size) { 399 uint64_t kprop[2] = { cpu_to_be64(KERNEL_LOAD_ADDR), 400 cpu_to_be64(kernel_size) }; 401 402 _FDT((fdt_property(fdt, "qemu,boot-kernel", &kprop, sizeof(kprop)))); 403 if (little_endian) { 404 _FDT((fdt_property(fdt, "qemu,boot-kernel-le", NULL, 0))); 405 } 406 } 407 if (boot_menu) { 408 _FDT((fdt_property_cell(fdt, "qemu,boot-menu", boot_menu))); 409 } 410 _FDT((fdt_property_cell(fdt, "qemu,graphic-width", graphic_width))); 411 _FDT((fdt_property_cell(fdt, "qemu,graphic-height", graphic_height))); 412 _FDT((fdt_property_cell(fdt, "qemu,graphic-depth", graphic_depth))); 413 414 _FDT((fdt_end_node(fdt))); 415 416 /* RTAS */ 417 _FDT((fdt_begin_node(fdt, "rtas"))); 418 419 if (!kvm_enabled() || kvmppc_spapr_use_multitce()) { 420 add_str(hypertas, "hcall-multi-tce"); 421 } 422 _FDT((fdt_property(fdt, "ibm,hypertas-functions", hypertas->str, 423 hypertas->len))); 424 g_string_free(hypertas, TRUE); 425 _FDT((fdt_property(fdt, "qemu,hypertas-functions", qemu_hypertas->str, 426 qemu_hypertas->len))); 427 g_string_free(qemu_hypertas, TRUE); 428 429 _FDT((fdt_property(fdt, "ibm,associativity-reference-points", 430 refpoints, sizeof(refpoints)))); 431 432 _FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX))); 433 _FDT((fdt_property_cell(fdt, "rtas-event-scan-rate", 434 RTAS_EVENT_SCAN_RATE))); 435 436 if (msi_supported) { 437 _FDT((fdt_property(fdt, "ibm,change-msix-capable", NULL, 0))); 438 } 439 440 /* 441 * According to PAPR, rtas ibm,os-term does not guarantee a return 442 * back to the guest cpu. 443 * 444 * While an additional ibm,extended-os-term property indicates that 445 * rtas call return will always occur. Set this property. 446 */ 447 _FDT((fdt_property(fdt, "ibm,extended-os-term", NULL, 0))); 448 449 _FDT((fdt_end_node(fdt))); 450 451 /* interrupt controller */ 452 _FDT((fdt_begin_node(fdt, "interrupt-controller"))); 453 454 _FDT((fdt_property_string(fdt, "device_type", 455 "PowerPC-External-Interrupt-Presentation"))); 456 _FDT((fdt_property_string(fdt, "compatible", "IBM,ppc-xicp"))); 457 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 458 _FDT((fdt_property(fdt, "ibm,interrupt-server-ranges", 459 interrupt_server_ranges_prop, 460 sizeof(interrupt_server_ranges_prop)))); 461 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 462 _FDT((fdt_property_cell(fdt, "linux,phandle", PHANDLE_XICP))); 463 _FDT((fdt_property_cell(fdt, "phandle", PHANDLE_XICP))); 464 465 _FDT((fdt_end_node(fdt))); 466 467 /* vdevice */ 468 _FDT((fdt_begin_node(fdt, "vdevice"))); 469 470 _FDT((fdt_property_string(fdt, "device_type", "vdevice"))); 471 _FDT((fdt_property_string(fdt, "compatible", "IBM,vdevice"))); 472 _FDT((fdt_property_cell(fdt, "#address-cells", 0x1))); 473 _FDT((fdt_property_cell(fdt, "#size-cells", 0x0))); 474 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 0x2))); 475 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 476 477 _FDT((fdt_end_node(fdt))); 478 479 /* event-sources */ 480 spapr_events_fdt_skel(fdt, epow_irq); 481 482 /* /hypervisor node */ 483 if (kvm_enabled()) { 484 uint8_t hypercall[16]; 485 486 /* indicate KVM hypercall interface */ 487 _FDT((fdt_begin_node(fdt, "hypervisor"))); 488 _FDT((fdt_property_string(fdt, "compatible", "linux,kvm"))); 489 if (kvmppc_has_cap_fixup_hcalls()) { 490 /* 491 * Older KVM versions with older guest kernels were broken with the 492 * magic page, don't allow the guest to map it. 493 */ 494 kvmppc_get_hypercall(first_cpu->env_ptr, hypercall, 495 sizeof(hypercall)); 496 _FDT((fdt_property(fdt, "hcall-instructions", hypercall, 497 sizeof(hypercall)))); 498 } 499 _FDT((fdt_end_node(fdt))); 500 } 501 502 _FDT((fdt_end_node(fdt))); /* close root node */ 503 _FDT((fdt_finish(fdt))); 504 505 return fdt; 506 } 507 508 static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start, 509 hwaddr size) 510 { 511 uint32_t associativity[] = { 512 cpu_to_be32(0x4), /* length */ 513 cpu_to_be32(0x0), cpu_to_be32(0x0), 514 cpu_to_be32(0x0), cpu_to_be32(nodeid) 515 }; 516 char mem_name[32]; 517 uint64_t mem_reg_property[2]; 518 int off; 519 520 mem_reg_property[0] = cpu_to_be64(start); 521 mem_reg_property[1] = cpu_to_be64(size); 522 523 sprintf(mem_name, "memory@" TARGET_FMT_lx, start); 524 off = fdt_add_subnode(fdt, 0, mem_name); 525 _FDT(off); 526 _FDT((fdt_setprop_string(fdt, off, "device_type", "memory"))); 527 _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property, 528 sizeof(mem_reg_property)))); 529 _FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity, 530 sizeof(associativity)))); 531 return off; 532 } 533 534 static int spapr_populate_memory(sPAPRMachineState *spapr, void *fdt) 535 { 536 MachineState *machine = MACHINE(spapr); 537 hwaddr mem_start, node_size; 538 int i, nb_nodes = nb_numa_nodes; 539 NodeInfo *nodes = numa_info; 540 NodeInfo ramnode; 541 542 /* No NUMA nodes, assume there is just one node with whole RAM */ 543 if (!nb_numa_nodes) { 544 nb_nodes = 1; 545 ramnode.node_mem = machine->ram_size; 546 nodes = &ramnode; 547 } 548 549 for (i = 0, mem_start = 0; i < nb_nodes; ++i) { 550 if (!nodes[i].node_mem) { 551 continue; 552 } 553 if (mem_start >= machine->ram_size) { 554 node_size = 0; 555 } else { 556 node_size = nodes[i].node_mem; 557 if (node_size > machine->ram_size - mem_start) { 558 node_size = machine->ram_size - mem_start; 559 } 560 } 561 if (!mem_start) { 562 /* ppc_spapr_init() checks for rma_size <= node0_size already */ 563 spapr_populate_memory_node(fdt, i, 0, spapr->rma_size); 564 mem_start += spapr->rma_size; 565 node_size -= spapr->rma_size; 566 } 567 for ( ; node_size; ) { 568 hwaddr sizetmp = pow2floor(node_size); 569 570 /* mem_start != 0 here */ 571 if (ctzl(mem_start) < ctzl(sizetmp)) { 572 sizetmp = 1ULL << ctzl(mem_start); 573 } 574 575 spapr_populate_memory_node(fdt, i, mem_start, sizetmp); 576 node_size -= sizetmp; 577 mem_start += sizetmp; 578 } 579 } 580 581 return 0; 582 } 583 584 static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, 585 sPAPRMachineState *spapr) 586 { 587 PowerPCCPU *cpu = POWERPC_CPU(cs); 588 CPUPPCState *env = &cpu->env; 589 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); 590 int index = ppc_get_vcpu_dt_id(cpu); 591 uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 592 0xffffffff, 0xffffffff}; 593 uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() : TIMEBASE_FREQ; 594 uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000; 595 uint32_t page_sizes_prop[64]; 596 size_t page_sizes_prop_size; 597 uint32_t vcpus_per_socket = smp_threads * smp_cores; 598 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 599 600 _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); 601 _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); 602 603 _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR]))); 604 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size", 605 env->dcache_line_size))); 606 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size", 607 env->dcache_line_size))); 608 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size", 609 env->icache_line_size))); 610 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size", 611 env->icache_line_size))); 612 613 if (pcc->l1_dcache_size) { 614 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size", 615 pcc->l1_dcache_size))); 616 } else { 617 fprintf(stderr, "Warning: Unknown L1 dcache size for cpu\n"); 618 } 619 if (pcc->l1_icache_size) { 620 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size", 621 pcc->l1_icache_size))); 622 } else { 623 fprintf(stderr, "Warning: Unknown L1 icache size for cpu\n"); 624 } 625 626 _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq))); 627 _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq))); 628 _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", env->slb_nr))); 629 _FDT((fdt_setprop_string(fdt, offset, "status", "okay"))); 630 _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0))); 631 632 if (env->spr_cb[SPR_PURR].oea_read) { 633 _FDT((fdt_setprop(fdt, offset, "ibm,purr", NULL, 0))); 634 } 635 636 if (env->mmu_model & POWERPC_MMU_1TSEG) { 637 _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes", 638 segs, sizeof(segs)))); 639 } 640 641 /* Advertise VMX/VSX (vector extensions) if available 642 * 0 / no property == no vector extensions 643 * 1 == VMX / Altivec available 644 * 2 == VSX available */ 645 if (env->insns_flags & PPC_ALTIVEC) { 646 uint32_t vmx = (env->insns_flags2 & PPC2_VSX) ? 2 : 1; 647 648 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", vmx))); 649 } 650 651 /* Advertise DFP (Decimal Floating Point) if available 652 * 0 / no property == no DFP 653 * 1 == DFP available */ 654 if (env->insns_flags2 & PPC2_DFP) { 655 _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); 656 } 657 658 page_sizes_prop_size = create_page_sizes_prop(env, page_sizes_prop, 659 sizeof(page_sizes_prop)); 660 if (page_sizes_prop_size) { 661 _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes", 662 page_sizes_prop, page_sizes_prop_size))); 663 } 664 665 _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", 666 cs->cpu_index / vcpus_per_socket))); 667 668 _FDT((fdt_setprop(fdt, offset, "ibm,pft-size", 669 pft_size_prop, sizeof(pft_size_prop)))); 670 671 _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cs)); 672 673 _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, 674 ppc_get_compat_smt_threads(cpu))); 675 } 676 677 static void spapr_populate_cpus_dt_node(void *fdt, sPAPRMachineState *spapr) 678 { 679 CPUState *cs; 680 int cpus_offset; 681 char *nodename; 682 int smt = kvmppc_smt_threads(); 683 684 cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); 685 _FDT(cpus_offset); 686 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1))); 687 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0))); 688 689 /* 690 * We walk the CPUs in reverse order to ensure that CPU DT nodes 691 * created by fdt_add_subnode() end up in the right order in FDT 692 * for the guest kernel the enumerate the CPUs correctly. 693 */ 694 CPU_FOREACH_REVERSE(cs) { 695 PowerPCCPU *cpu = POWERPC_CPU(cs); 696 int index = ppc_get_vcpu_dt_id(cpu); 697 DeviceClass *dc = DEVICE_GET_CLASS(cs); 698 int offset; 699 700 if ((index % smt) != 0) { 701 continue; 702 } 703 704 nodename = g_strdup_printf("%s@%x", dc->fw_name, index); 705 offset = fdt_add_subnode(fdt, cpus_offset, nodename); 706 g_free(nodename); 707 _FDT(offset); 708 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 709 } 710 711 } 712 713 /* 714 * Adds ibm,dynamic-reconfiguration-memory node. 715 * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation 716 * of this device tree node. 717 */ 718 static int spapr_populate_drconf_memory(sPAPRMachineState *spapr, void *fdt) 719 { 720 MachineState *machine = MACHINE(spapr); 721 int ret, i, offset; 722 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 723 uint32_t prop_lmb_size[] = {0, cpu_to_be32(lmb_size)}; 724 uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; 725 uint32_t *int_buf, *cur_index, buf_len; 726 int nr_nodes = nb_numa_nodes ? nb_numa_nodes : 1; 727 728 /* 729 * Allocate enough buffer size to fit in ibm,dynamic-memory 730 * or ibm,associativity-lookup-arrays 731 */ 732 buf_len = MAX(nr_lmbs * SPAPR_DR_LMB_LIST_ENTRY_SIZE + 1, nr_nodes * 4 + 2) 733 * sizeof(uint32_t); 734 cur_index = int_buf = g_malloc0(buf_len); 735 736 offset = fdt_add_subnode(fdt, 0, "ibm,dynamic-reconfiguration-memory"); 737 738 ret = fdt_setprop(fdt, offset, "ibm,lmb-size", prop_lmb_size, 739 sizeof(prop_lmb_size)); 740 if (ret < 0) { 741 goto out; 742 } 743 744 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-flags-mask", 0xff); 745 if (ret < 0) { 746 goto out; 747 } 748 749 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-preservation-time", 0x0); 750 if (ret < 0) { 751 goto out; 752 } 753 754 /* ibm,dynamic-memory */ 755 int_buf[0] = cpu_to_be32(nr_lmbs); 756 cur_index++; 757 for (i = 0; i < nr_lmbs; i++) { 758 sPAPRDRConnector *drc; 759 sPAPRDRConnectorClass *drck; 760 uint64_t addr = i * lmb_size + spapr->hotplug_memory.base;; 761 uint32_t *dynamic_memory = cur_index; 762 763 drc = spapr_dr_connector_by_id(SPAPR_DR_CONNECTOR_TYPE_LMB, 764 addr/lmb_size); 765 g_assert(drc); 766 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 767 768 dynamic_memory[0] = cpu_to_be32(addr >> 32); 769 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 770 dynamic_memory[2] = cpu_to_be32(drck->get_index(drc)); 771 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 772 dynamic_memory[4] = cpu_to_be32(numa_get_node(addr, NULL)); 773 if (addr < machine->ram_size || 774 memory_region_present(get_system_memory(), addr)) { 775 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_ASSIGNED); 776 } else { 777 dynamic_memory[5] = cpu_to_be32(0); 778 } 779 780 cur_index += SPAPR_DR_LMB_LIST_ENTRY_SIZE; 781 } 782 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory", int_buf, buf_len); 783 if (ret < 0) { 784 goto out; 785 } 786 787 /* ibm,associativity-lookup-arrays */ 788 cur_index = int_buf; 789 int_buf[0] = cpu_to_be32(nr_nodes); 790 int_buf[1] = cpu_to_be32(4); /* Number of entries per associativity list */ 791 cur_index += 2; 792 for (i = 0; i < nr_nodes; i++) { 793 uint32_t associativity[] = { 794 cpu_to_be32(0x0), 795 cpu_to_be32(0x0), 796 cpu_to_be32(0x0), 797 cpu_to_be32(i) 798 }; 799 memcpy(cur_index, associativity, sizeof(associativity)); 800 cur_index += 4; 801 } 802 ret = fdt_setprop(fdt, offset, "ibm,associativity-lookup-arrays", int_buf, 803 (cur_index - int_buf) * sizeof(uint32_t)); 804 out: 805 g_free(int_buf); 806 return ret; 807 } 808 809 int spapr_h_cas_compose_response(sPAPRMachineState *spapr, 810 target_ulong addr, target_ulong size, 811 bool cpu_update, bool memory_update) 812 { 813 void *fdt, *fdt_skel; 814 sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 }; 815 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine()); 816 817 size -= sizeof(hdr); 818 819 /* Create sceleton */ 820 fdt_skel = g_malloc0(size); 821 _FDT((fdt_create(fdt_skel, size))); 822 _FDT((fdt_begin_node(fdt_skel, ""))); 823 _FDT((fdt_end_node(fdt_skel))); 824 _FDT((fdt_finish(fdt_skel))); 825 fdt = g_malloc0(size); 826 _FDT((fdt_open_into(fdt_skel, fdt, size))); 827 g_free(fdt_skel); 828 829 /* Fixup cpu nodes */ 830 if (cpu_update) { 831 _FDT((spapr_fixup_cpu_dt(fdt, spapr))); 832 } 833 834 /* Generate memory nodes or ibm,dynamic-reconfiguration-memory node */ 835 if (memory_update && smc->dr_lmb_enabled) { 836 _FDT((spapr_populate_drconf_memory(spapr, fdt))); 837 } 838 839 /* Pack resulting tree */ 840 _FDT((fdt_pack(fdt))); 841 842 if (fdt_totalsize(fdt) + sizeof(hdr) > size) { 843 trace_spapr_cas_failed(size); 844 return -1; 845 } 846 847 cpu_physical_memory_write(addr, &hdr, sizeof(hdr)); 848 cpu_physical_memory_write(addr + sizeof(hdr), fdt, fdt_totalsize(fdt)); 849 trace_spapr_cas_continue(fdt_totalsize(fdt) + sizeof(hdr)); 850 g_free(fdt); 851 852 return 0; 853 } 854 855 static void spapr_finalize_fdt(sPAPRMachineState *spapr, 856 hwaddr fdt_addr, 857 hwaddr rtas_addr, 858 hwaddr rtas_size) 859 { 860 MachineState *machine = MACHINE(qdev_get_machine()); 861 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 862 const char *boot_device = machine->boot_order; 863 int ret, i; 864 size_t cb = 0; 865 char *bootlist; 866 void *fdt; 867 sPAPRPHBState *phb; 868 869 fdt = g_malloc(FDT_MAX_SIZE); 870 871 /* open out the base tree into a temp buffer for the final tweaks */ 872 _FDT((fdt_open_into(spapr->fdt_skel, fdt, FDT_MAX_SIZE))); 873 874 ret = spapr_populate_memory(spapr, fdt); 875 if (ret < 0) { 876 fprintf(stderr, "couldn't setup memory nodes in fdt\n"); 877 exit(1); 878 } 879 880 ret = spapr_populate_vdevice(spapr->vio_bus, fdt); 881 if (ret < 0) { 882 fprintf(stderr, "couldn't setup vio devices in fdt\n"); 883 exit(1); 884 } 885 886 if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) { 887 ret = spapr_rng_populate_dt(fdt); 888 if (ret < 0) { 889 fprintf(stderr, "could not set up rng device in the fdt\n"); 890 exit(1); 891 } 892 } 893 894 QLIST_FOREACH(phb, &spapr->phbs, list) { 895 ret = spapr_populate_pci_dt(phb, PHANDLE_XICP, fdt); 896 } 897 898 if (ret < 0) { 899 fprintf(stderr, "couldn't setup PCI devices in fdt\n"); 900 exit(1); 901 } 902 903 /* RTAS */ 904 ret = spapr_rtas_device_tree_setup(fdt, rtas_addr, rtas_size); 905 if (ret < 0) { 906 fprintf(stderr, "Couldn't set up RTAS device tree properties\n"); 907 } 908 909 /* cpus */ 910 spapr_populate_cpus_dt_node(fdt, spapr); 911 912 bootlist = get_boot_devices_list(&cb, true); 913 if (cb && bootlist) { 914 int offset = fdt_path_offset(fdt, "/chosen"); 915 if (offset < 0) { 916 exit(1); 917 } 918 for (i = 0; i < cb; i++) { 919 if (bootlist[i] == '\n') { 920 bootlist[i] = ' '; 921 } 922 923 } 924 ret = fdt_setprop_string(fdt, offset, "qemu,boot-list", bootlist); 925 } 926 927 if (boot_device && strlen(boot_device)) { 928 int offset = fdt_path_offset(fdt, "/chosen"); 929 930 if (offset < 0) { 931 exit(1); 932 } 933 fdt_setprop_string(fdt, offset, "qemu,boot-device", boot_device); 934 } 935 936 if (!spapr->has_graphics) { 937 spapr_populate_chosen_stdout(fdt, spapr->vio_bus); 938 } 939 940 if (smc->dr_lmb_enabled) { 941 _FDT(spapr_drc_populate_dt(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB)); 942 } 943 944 _FDT((fdt_pack(fdt))); 945 946 if (fdt_totalsize(fdt) > FDT_MAX_SIZE) { 947 error_report("FDT too big ! 0x%x bytes (max is 0x%x)", 948 fdt_totalsize(fdt), FDT_MAX_SIZE); 949 exit(1); 950 } 951 952 qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); 953 cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); 954 955 g_free(bootlist); 956 g_free(fdt); 957 } 958 959 static uint64_t translate_kernel_address(void *opaque, uint64_t addr) 960 { 961 return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR; 962 } 963 964 static void emulate_spapr_hypercall(PowerPCCPU *cpu) 965 { 966 CPUPPCState *env = &cpu->env; 967 968 if (msr_pr) { 969 hcall_dprintf("Hypercall made with MSR[PR]=1\n"); 970 env->gpr[3] = H_PRIVILEGE; 971 } else { 972 env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]); 973 } 974 } 975 976 #define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2)) 977 #define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID) 978 #define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY) 979 #define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY)) 980 #define DIRTY_HPTE(_hpte) ((*(uint64_t *)(_hpte)) |= tswap64(HPTE64_V_HPTE_DIRTY)) 981 982 static void spapr_reset_htab(sPAPRMachineState *spapr) 983 { 984 long shift; 985 int index; 986 987 /* allocate hash page table. For now we always make this 16mb, 988 * later we should probably make it scale to the size of guest 989 * RAM */ 990 991 shift = kvmppc_reset_htab(spapr->htab_shift); 992 993 if (shift > 0) { 994 /* Kernel handles htab, we don't need to allocate one */ 995 spapr->htab_shift = shift; 996 kvmppc_kern_htab = true; 997 998 /* Tell readers to update their file descriptor */ 999 if (spapr->htab_fd >= 0) { 1000 spapr->htab_fd_stale = true; 1001 } 1002 } else { 1003 if (!spapr->htab) { 1004 /* Allocate an htab if we don't yet have one */ 1005 spapr->htab = qemu_memalign(HTAB_SIZE(spapr), HTAB_SIZE(spapr)); 1006 } 1007 1008 /* And clear it */ 1009 memset(spapr->htab, 0, HTAB_SIZE(spapr)); 1010 1011 for (index = 0; index < HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; index++) { 1012 DIRTY_HPTE(HPTE(spapr->htab, index)); 1013 } 1014 } 1015 1016 /* Update the RMA size if necessary */ 1017 if (spapr->vrma_adjust) { 1018 spapr->rma_size = kvmppc_rma_size(spapr_node0_size(), 1019 spapr->htab_shift); 1020 } 1021 } 1022 1023 static int find_unknown_sysbus_device(SysBusDevice *sbdev, void *opaque) 1024 { 1025 bool matched = false; 1026 1027 if (object_dynamic_cast(OBJECT(sbdev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 1028 matched = true; 1029 } 1030 1031 if (!matched) { 1032 error_report("Device %s is not supported by this machine yet.", 1033 qdev_fw_name(DEVICE(sbdev))); 1034 exit(1); 1035 } 1036 1037 return 0; 1038 } 1039 1040 /* 1041 * A guest reset will cause spapr->htab_fd to become stale if being used. 1042 * Reopen the file descriptor to make sure the whole HTAB is properly read. 1043 */ 1044 static int spapr_check_htab_fd(sPAPRMachineState *spapr) 1045 { 1046 int rc = 0; 1047 1048 if (spapr->htab_fd_stale) { 1049 close(spapr->htab_fd); 1050 spapr->htab_fd = kvmppc_get_htab_fd(false); 1051 if (spapr->htab_fd < 0) { 1052 error_report("Unable to open fd for reading hash table from KVM: " 1053 "%s", strerror(errno)); 1054 rc = -1; 1055 } 1056 spapr->htab_fd_stale = false; 1057 } 1058 1059 return rc; 1060 } 1061 1062 static void ppc_spapr_reset(void) 1063 { 1064 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 1065 PowerPCCPU *first_ppc_cpu; 1066 uint32_t rtas_limit; 1067 1068 /* Check for unknown sysbus devices */ 1069 foreach_dynamic_sysbus_device(find_unknown_sysbus_device, NULL); 1070 1071 /* Reset the hash table & recalc the RMA */ 1072 spapr_reset_htab(spapr); 1073 1074 qemu_devices_reset(); 1075 1076 /* 1077 * We place the device tree and RTAS just below either the top of the RMA, 1078 * or just below 2GB, whichever is lowere, so that it can be 1079 * processed with 32-bit real mode code if necessary 1080 */ 1081 rtas_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR); 1082 spapr->rtas_addr = rtas_limit - RTAS_MAX_SIZE; 1083 spapr->fdt_addr = spapr->rtas_addr - FDT_MAX_SIZE; 1084 1085 /* Load the fdt */ 1086 spapr_finalize_fdt(spapr, spapr->fdt_addr, spapr->rtas_addr, 1087 spapr->rtas_size); 1088 1089 /* Copy RTAS over */ 1090 cpu_physical_memory_write(spapr->rtas_addr, spapr->rtas_blob, 1091 spapr->rtas_size); 1092 1093 /* Set up the entry state */ 1094 first_ppc_cpu = POWERPC_CPU(first_cpu); 1095 first_ppc_cpu->env.gpr[3] = spapr->fdt_addr; 1096 first_ppc_cpu->env.gpr[5] = 0; 1097 first_cpu->halted = 0; 1098 first_ppc_cpu->env.nip = SPAPR_ENTRY_POINT; 1099 1100 } 1101 1102 static void spapr_cpu_reset(void *opaque) 1103 { 1104 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 1105 PowerPCCPU *cpu = opaque; 1106 CPUState *cs = CPU(cpu); 1107 CPUPPCState *env = &cpu->env; 1108 1109 cpu_reset(cs); 1110 1111 /* All CPUs start halted. CPU0 is unhalted from the machine level 1112 * reset code and the rest are explicitly started up by the guest 1113 * using an RTAS call */ 1114 cs->halted = 1; 1115 1116 env->spr[SPR_HIOR] = 0; 1117 1118 env->external_htab = (uint8_t *)spapr->htab; 1119 if (kvm_enabled() && !env->external_htab) { 1120 /* 1121 * HV KVM, set external_htab to 1 so our ppc_hash64_load_hpte* 1122 * functions do the right thing. 1123 */ 1124 env->external_htab = (void *)1; 1125 } 1126 env->htab_base = -1; 1127 /* 1128 * htab_mask is the mask used to normalize hash value to PTEG index. 1129 * htab_shift is log2 of hash table size. 1130 * We have 8 hpte per group, and each hpte is 16 bytes. 1131 * ie have 128 bytes per hpte entry. 1132 */ 1133 env->htab_mask = (1ULL << (spapr->htab_shift - 7)) - 1; 1134 env->spr[SPR_SDR1] = (target_ulong)(uintptr_t)spapr->htab | 1135 (spapr->htab_shift - 18); 1136 } 1137 1138 static void spapr_create_nvram(sPAPRMachineState *spapr) 1139 { 1140 DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram"); 1141 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 1142 1143 if (dinfo) { 1144 qdev_prop_set_drive_nofail(dev, "drive", blk_by_legacy_dinfo(dinfo)); 1145 } 1146 1147 qdev_init_nofail(dev); 1148 1149 spapr->nvram = (struct sPAPRNVRAM *)dev; 1150 } 1151 1152 static void spapr_rtc_create(sPAPRMachineState *spapr) 1153 { 1154 DeviceState *dev = qdev_create(NULL, TYPE_SPAPR_RTC); 1155 1156 qdev_init_nofail(dev); 1157 spapr->rtc = dev; 1158 1159 object_property_add_alias(qdev_get_machine(), "rtc-time", 1160 OBJECT(spapr->rtc), "date", NULL); 1161 } 1162 1163 /* Returns whether we want to use VGA or not */ 1164 static int spapr_vga_init(PCIBus *pci_bus) 1165 { 1166 switch (vga_interface_type) { 1167 case VGA_NONE: 1168 return false; 1169 case VGA_DEVICE: 1170 return true; 1171 case VGA_STD: 1172 return pci_vga_init(pci_bus) != NULL; 1173 default: 1174 fprintf(stderr, "This vga model is not supported," 1175 "currently it only supports -vga std\n"); 1176 exit(0); 1177 } 1178 } 1179 1180 static int spapr_post_load(void *opaque, int version_id) 1181 { 1182 sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; 1183 int err = 0; 1184 1185 /* In earlier versions, there was no separate qdev for the PAPR 1186 * RTC, so the RTC offset was stored directly in sPAPREnvironment. 1187 * So when migrating from those versions, poke the incoming offset 1188 * value into the RTC device */ 1189 if (version_id < 3) { 1190 err = spapr_rtc_import_offset(spapr->rtc, spapr->rtc_offset); 1191 } 1192 1193 return err; 1194 } 1195 1196 static bool version_before_3(void *opaque, int version_id) 1197 { 1198 return version_id < 3; 1199 } 1200 1201 static const VMStateDescription vmstate_spapr = { 1202 .name = "spapr", 1203 .version_id = 3, 1204 .minimum_version_id = 1, 1205 .post_load = spapr_post_load, 1206 .fields = (VMStateField[]) { 1207 /* used to be @next_irq */ 1208 VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), 1209 1210 /* RTC offset */ 1211 VMSTATE_UINT64_TEST(rtc_offset, sPAPRMachineState, version_before_3), 1212 1213 VMSTATE_PPC_TIMEBASE_V(tb, sPAPRMachineState, 2), 1214 VMSTATE_END_OF_LIST() 1215 }, 1216 }; 1217 1218 static int htab_save_setup(QEMUFile *f, void *opaque) 1219 { 1220 sPAPRMachineState *spapr = opaque; 1221 1222 /* "Iteration" header */ 1223 qemu_put_be32(f, spapr->htab_shift); 1224 1225 if (spapr->htab) { 1226 spapr->htab_save_index = 0; 1227 spapr->htab_first_pass = true; 1228 } else { 1229 assert(kvm_enabled()); 1230 1231 spapr->htab_fd = kvmppc_get_htab_fd(false); 1232 spapr->htab_fd_stale = false; 1233 if (spapr->htab_fd < 0) { 1234 fprintf(stderr, "Unable to open fd for reading hash table from KVM: %s\n", 1235 strerror(errno)); 1236 return -1; 1237 } 1238 } 1239 1240 1241 return 0; 1242 } 1243 1244 static void htab_save_first_pass(QEMUFile *f, sPAPRMachineState *spapr, 1245 int64_t max_ns) 1246 { 1247 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 1248 int index = spapr->htab_save_index; 1249 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 1250 1251 assert(spapr->htab_first_pass); 1252 1253 do { 1254 int chunkstart; 1255 1256 /* Consume invalid HPTEs */ 1257 while ((index < htabslots) 1258 && !HPTE_VALID(HPTE(spapr->htab, index))) { 1259 index++; 1260 CLEAN_HPTE(HPTE(spapr->htab, index)); 1261 } 1262 1263 /* Consume valid HPTEs */ 1264 chunkstart = index; 1265 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 1266 && HPTE_VALID(HPTE(spapr->htab, index))) { 1267 index++; 1268 CLEAN_HPTE(HPTE(spapr->htab, index)); 1269 } 1270 1271 if (index > chunkstart) { 1272 int n_valid = index - chunkstart; 1273 1274 qemu_put_be32(f, chunkstart); 1275 qemu_put_be16(f, n_valid); 1276 qemu_put_be16(f, 0); 1277 qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), 1278 HASH_PTE_SIZE_64 * n_valid); 1279 1280 if ((qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 1281 break; 1282 } 1283 } 1284 } while ((index < htabslots) && !qemu_file_rate_limit(f)); 1285 1286 if (index >= htabslots) { 1287 assert(index == htabslots); 1288 index = 0; 1289 spapr->htab_first_pass = false; 1290 } 1291 spapr->htab_save_index = index; 1292 } 1293 1294 static int htab_save_later_pass(QEMUFile *f, sPAPRMachineState *spapr, 1295 int64_t max_ns) 1296 { 1297 bool final = max_ns < 0; 1298 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 1299 int examined = 0, sent = 0; 1300 int index = spapr->htab_save_index; 1301 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 1302 1303 assert(!spapr->htab_first_pass); 1304 1305 do { 1306 int chunkstart, invalidstart; 1307 1308 /* Consume non-dirty HPTEs */ 1309 while ((index < htabslots) 1310 && !HPTE_DIRTY(HPTE(spapr->htab, index))) { 1311 index++; 1312 examined++; 1313 } 1314 1315 chunkstart = index; 1316 /* Consume valid dirty HPTEs */ 1317 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 1318 && HPTE_DIRTY(HPTE(spapr->htab, index)) 1319 && HPTE_VALID(HPTE(spapr->htab, index))) { 1320 CLEAN_HPTE(HPTE(spapr->htab, index)); 1321 index++; 1322 examined++; 1323 } 1324 1325 invalidstart = index; 1326 /* Consume invalid dirty HPTEs */ 1327 while ((index < htabslots) && (index - invalidstart < USHRT_MAX) 1328 && HPTE_DIRTY(HPTE(spapr->htab, index)) 1329 && !HPTE_VALID(HPTE(spapr->htab, index))) { 1330 CLEAN_HPTE(HPTE(spapr->htab, index)); 1331 index++; 1332 examined++; 1333 } 1334 1335 if (index > chunkstart) { 1336 int n_valid = invalidstart - chunkstart; 1337 int n_invalid = index - invalidstart; 1338 1339 qemu_put_be32(f, chunkstart); 1340 qemu_put_be16(f, n_valid); 1341 qemu_put_be16(f, n_invalid); 1342 qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), 1343 HASH_PTE_SIZE_64 * n_valid); 1344 sent += index - chunkstart; 1345 1346 if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 1347 break; 1348 } 1349 } 1350 1351 if (examined >= htabslots) { 1352 break; 1353 } 1354 1355 if (index >= htabslots) { 1356 assert(index == htabslots); 1357 index = 0; 1358 } 1359 } while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final)); 1360 1361 if (index >= htabslots) { 1362 assert(index == htabslots); 1363 index = 0; 1364 } 1365 1366 spapr->htab_save_index = index; 1367 1368 return (examined >= htabslots) && (sent == 0) ? 1 : 0; 1369 } 1370 1371 #define MAX_ITERATION_NS 5000000 /* 5 ms */ 1372 #define MAX_KVM_BUF_SIZE 2048 1373 1374 static int htab_save_iterate(QEMUFile *f, void *opaque) 1375 { 1376 sPAPRMachineState *spapr = opaque; 1377 int rc = 0; 1378 1379 /* Iteration header */ 1380 qemu_put_be32(f, 0); 1381 1382 if (!spapr->htab) { 1383 assert(kvm_enabled()); 1384 1385 rc = spapr_check_htab_fd(spapr); 1386 if (rc < 0) { 1387 return rc; 1388 } 1389 1390 rc = kvmppc_save_htab(f, spapr->htab_fd, 1391 MAX_KVM_BUF_SIZE, MAX_ITERATION_NS); 1392 if (rc < 0) { 1393 return rc; 1394 } 1395 } else if (spapr->htab_first_pass) { 1396 htab_save_first_pass(f, spapr, MAX_ITERATION_NS); 1397 } else { 1398 rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS); 1399 } 1400 1401 /* End marker */ 1402 qemu_put_be32(f, 0); 1403 qemu_put_be16(f, 0); 1404 qemu_put_be16(f, 0); 1405 1406 return rc; 1407 } 1408 1409 static int htab_save_complete(QEMUFile *f, void *opaque) 1410 { 1411 sPAPRMachineState *spapr = opaque; 1412 1413 /* Iteration header */ 1414 qemu_put_be32(f, 0); 1415 1416 if (!spapr->htab) { 1417 int rc; 1418 1419 assert(kvm_enabled()); 1420 1421 rc = spapr_check_htab_fd(spapr); 1422 if (rc < 0) { 1423 return rc; 1424 } 1425 1426 rc = kvmppc_save_htab(f, spapr->htab_fd, MAX_KVM_BUF_SIZE, -1); 1427 if (rc < 0) { 1428 return rc; 1429 } 1430 close(spapr->htab_fd); 1431 spapr->htab_fd = -1; 1432 } else { 1433 htab_save_later_pass(f, spapr, -1); 1434 } 1435 1436 /* End marker */ 1437 qemu_put_be32(f, 0); 1438 qemu_put_be16(f, 0); 1439 qemu_put_be16(f, 0); 1440 1441 return 0; 1442 } 1443 1444 static int htab_load(QEMUFile *f, void *opaque, int version_id) 1445 { 1446 sPAPRMachineState *spapr = opaque; 1447 uint32_t section_hdr; 1448 int fd = -1; 1449 1450 if (version_id < 1 || version_id > 1) { 1451 fprintf(stderr, "htab_load() bad version\n"); 1452 return -EINVAL; 1453 } 1454 1455 section_hdr = qemu_get_be32(f); 1456 1457 if (section_hdr) { 1458 /* First section, just the hash shift */ 1459 if (spapr->htab_shift != section_hdr) { 1460 error_report("htab_shift mismatch: source %d target %d", 1461 section_hdr, spapr->htab_shift); 1462 return -EINVAL; 1463 } 1464 return 0; 1465 } 1466 1467 if (!spapr->htab) { 1468 assert(kvm_enabled()); 1469 1470 fd = kvmppc_get_htab_fd(true); 1471 if (fd < 0) { 1472 fprintf(stderr, "Unable to open fd to restore KVM hash table: %s\n", 1473 strerror(errno)); 1474 } 1475 } 1476 1477 while (true) { 1478 uint32_t index; 1479 uint16_t n_valid, n_invalid; 1480 1481 index = qemu_get_be32(f); 1482 n_valid = qemu_get_be16(f); 1483 n_invalid = qemu_get_be16(f); 1484 1485 if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { 1486 /* End of Stream */ 1487 break; 1488 } 1489 1490 if ((index + n_valid + n_invalid) > 1491 (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { 1492 /* Bad index in stream */ 1493 fprintf(stderr, "htab_load() bad index %d (%hd+%hd entries) " 1494 "in htab stream (htab_shift=%d)\n", index, n_valid, n_invalid, 1495 spapr->htab_shift); 1496 return -EINVAL; 1497 } 1498 1499 if (spapr->htab) { 1500 if (n_valid) { 1501 qemu_get_buffer(f, HPTE(spapr->htab, index), 1502 HASH_PTE_SIZE_64 * n_valid); 1503 } 1504 if (n_invalid) { 1505 memset(HPTE(spapr->htab, index + n_valid), 0, 1506 HASH_PTE_SIZE_64 * n_invalid); 1507 } 1508 } else { 1509 int rc; 1510 1511 assert(fd >= 0); 1512 1513 rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); 1514 if (rc < 0) { 1515 return rc; 1516 } 1517 } 1518 } 1519 1520 if (!spapr->htab) { 1521 assert(fd >= 0); 1522 close(fd); 1523 } 1524 1525 return 0; 1526 } 1527 1528 static SaveVMHandlers savevm_htab_handlers = { 1529 .save_live_setup = htab_save_setup, 1530 .save_live_iterate = htab_save_iterate, 1531 .save_live_complete = htab_save_complete, 1532 .load_state = htab_load, 1533 }; 1534 1535 static void spapr_boot_set(void *opaque, const char *boot_device, 1536 Error **errp) 1537 { 1538 MachineState *machine = MACHINE(qdev_get_machine()); 1539 machine->boot_order = g_strdup(boot_device); 1540 } 1541 1542 static void spapr_cpu_init(sPAPRMachineState *spapr, PowerPCCPU *cpu) 1543 { 1544 CPUPPCState *env = &cpu->env; 1545 1546 /* Set time-base frequency to 512 MHz */ 1547 cpu_ppc_tb_init(env, TIMEBASE_FREQ); 1548 1549 /* PAPR always has exception vectors in RAM not ROM. To ensure this, 1550 * MSR[IP] should never be set. 1551 */ 1552 env->msr_mask &= ~(1 << 6); 1553 1554 /* Tell KVM that we're in PAPR mode */ 1555 if (kvm_enabled()) { 1556 kvmppc_set_papr(cpu); 1557 } 1558 1559 if (cpu->max_compat) { 1560 if (ppc_set_compat(cpu, cpu->max_compat) < 0) { 1561 exit(1); 1562 } 1563 } 1564 1565 xics_cpu_setup(spapr->icp, cpu); 1566 1567 qemu_register_reset(spapr_cpu_reset, cpu); 1568 } 1569 1570 /* 1571 * Reset routine for LMB DR devices. 1572 * 1573 * Unlike PCI DR devices, LMB DR devices explicitly register this reset 1574 * routine. Reset for PCI DR devices will be handled by PHB reset routine 1575 * when it walks all its children devices. LMB devices reset occurs 1576 * as part of spapr_ppc_reset(). 1577 */ 1578 static void spapr_drc_reset(void *opaque) 1579 { 1580 sPAPRDRConnector *drc = opaque; 1581 DeviceState *d = DEVICE(drc); 1582 1583 if (d) { 1584 device_reset(d); 1585 } 1586 } 1587 1588 static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr) 1589 { 1590 MachineState *machine = MACHINE(spapr); 1591 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 1592 uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; 1593 int i; 1594 1595 for (i = 0; i < nr_lmbs; i++) { 1596 sPAPRDRConnector *drc; 1597 uint64_t addr; 1598 1599 addr = i * lmb_size + spapr->hotplug_memory.base; 1600 drc = spapr_dr_connector_new(OBJECT(spapr), SPAPR_DR_CONNECTOR_TYPE_LMB, 1601 addr/lmb_size); 1602 qemu_register_reset(spapr_drc_reset, drc); 1603 } 1604 } 1605 1606 /* 1607 * If RAM size, maxmem size and individual node mem sizes aren't aligned 1608 * to SPAPR_MEMORY_BLOCK_SIZE(256MB), then refuse to start the guest 1609 * since we can't support such unaligned sizes with DRCONF_MEMORY. 1610 */ 1611 static void spapr_validate_node_memory(MachineState *machine) 1612 { 1613 int i; 1614 1615 if (machine->maxram_size % SPAPR_MEMORY_BLOCK_SIZE || 1616 machine->ram_size % SPAPR_MEMORY_BLOCK_SIZE) { 1617 error_report("Can't support memory configuration where RAM size " 1618 "0x" RAM_ADDR_FMT " or maxmem size " 1619 "0x" RAM_ADDR_FMT " isn't aligned to %llu MB", 1620 machine->ram_size, machine->maxram_size, 1621 SPAPR_MEMORY_BLOCK_SIZE/M_BYTE); 1622 exit(EXIT_FAILURE); 1623 } 1624 1625 for (i = 0; i < nb_numa_nodes; i++) { 1626 if (numa_info[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) { 1627 error_report("Can't support memory configuration where memory size" 1628 " %" PRIx64 " of node %d isn't aligned to %llu MB", 1629 numa_info[i].node_mem, i, 1630 SPAPR_MEMORY_BLOCK_SIZE/M_BYTE); 1631 exit(EXIT_FAILURE); 1632 } 1633 } 1634 } 1635 1636 /* pSeries LPAR / sPAPR hardware init */ 1637 static void ppc_spapr_init(MachineState *machine) 1638 { 1639 sPAPRMachineState *spapr = SPAPR_MACHINE(machine); 1640 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1641 const char *kernel_filename = machine->kernel_filename; 1642 const char *kernel_cmdline = machine->kernel_cmdline; 1643 const char *initrd_filename = machine->initrd_filename; 1644 PowerPCCPU *cpu; 1645 PCIHostState *phb; 1646 int i; 1647 MemoryRegion *sysmem = get_system_memory(); 1648 MemoryRegion *ram = g_new(MemoryRegion, 1); 1649 MemoryRegion *rma_region; 1650 void *rma = NULL; 1651 hwaddr rma_alloc_size; 1652 hwaddr node0_size = spapr_node0_size(); 1653 uint32_t initrd_base = 0; 1654 long kernel_size = 0, initrd_size = 0; 1655 long load_limit, fw_size; 1656 bool kernel_le = false; 1657 char *filename; 1658 1659 msi_supported = true; 1660 1661 QLIST_INIT(&spapr->phbs); 1662 1663 cpu_ppc_hypercall = emulate_spapr_hypercall; 1664 1665 /* Allocate RMA if necessary */ 1666 rma_alloc_size = kvmppc_alloc_rma(&rma); 1667 1668 if (rma_alloc_size == -1) { 1669 error_report("Unable to create RMA"); 1670 exit(1); 1671 } 1672 1673 if (rma_alloc_size && (rma_alloc_size < node0_size)) { 1674 spapr->rma_size = rma_alloc_size; 1675 } else { 1676 spapr->rma_size = node0_size; 1677 1678 /* With KVM, we don't actually know whether KVM supports an 1679 * unbounded RMA (PR KVM) or is limited by the hash table size 1680 * (HV KVM using VRMA), so we always assume the latter 1681 * 1682 * In that case, we also limit the initial allocations for RTAS 1683 * etc... to 256M since we have no way to know what the VRMA size 1684 * is going to be as it depends on the size of the hash table 1685 * isn't determined yet. 1686 */ 1687 if (kvm_enabled()) { 1688 spapr->vrma_adjust = 1; 1689 spapr->rma_size = MIN(spapr->rma_size, 0x10000000); 1690 } 1691 } 1692 1693 if (spapr->rma_size > node0_size) { 1694 fprintf(stderr, "Error: Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")\n", 1695 spapr->rma_size); 1696 exit(1); 1697 } 1698 1699 /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ 1700 load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; 1701 1702 /* We aim for a hash table of size 1/128 the size of RAM. The 1703 * normal rule of thumb is 1/64 the size of RAM, but that's much 1704 * more than needed for the Linux guests we support. */ 1705 spapr->htab_shift = 18; /* Minimum architected size */ 1706 while (spapr->htab_shift <= 46) { 1707 if ((1ULL << (spapr->htab_shift + 7)) >= machine->maxram_size) { 1708 break; 1709 } 1710 spapr->htab_shift++; 1711 } 1712 1713 /* Set up Interrupt Controller before we create the VCPUs */ 1714 spapr->icp = xics_system_init(machine, 1715 DIV_ROUND_UP(max_cpus * kvmppc_smt_threads(), 1716 smp_threads), 1717 XICS_IRQS); 1718 1719 if (smc->dr_lmb_enabled) { 1720 spapr_validate_node_memory(machine); 1721 } 1722 1723 /* init CPUs */ 1724 if (machine->cpu_model == NULL) { 1725 machine->cpu_model = kvm_enabled() ? "host" : "POWER7"; 1726 } 1727 for (i = 0; i < smp_cpus; i++) { 1728 cpu = cpu_ppc_init(machine->cpu_model); 1729 if (cpu == NULL) { 1730 fprintf(stderr, "Unable to find PowerPC CPU definition\n"); 1731 exit(1); 1732 } 1733 spapr_cpu_init(spapr, cpu); 1734 } 1735 1736 if (kvm_enabled()) { 1737 /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ 1738 kvmppc_enable_logical_ci_hcalls(); 1739 kvmppc_enable_set_mode_hcall(); 1740 } 1741 1742 /* allocate RAM */ 1743 memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram", 1744 machine->ram_size); 1745 memory_region_add_subregion(sysmem, 0, ram); 1746 1747 if (rma_alloc_size && rma) { 1748 rma_region = g_new(MemoryRegion, 1); 1749 memory_region_init_ram_ptr(rma_region, NULL, "ppc_spapr.rma", 1750 rma_alloc_size, rma); 1751 vmstate_register_ram_global(rma_region); 1752 memory_region_add_subregion(sysmem, 0, rma_region); 1753 } 1754 1755 /* initialize hotplug memory address space */ 1756 if (machine->ram_size < machine->maxram_size) { 1757 ram_addr_t hotplug_mem_size = machine->maxram_size - machine->ram_size; 1758 1759 if (machine->ram_slots > SPAPR_MAX_RAM_SLOTS) { 1760 error_report("Specified number of memory slots %"PRIu64" exceeds max supported %d\n", 1761 machine->ram_slots, SPAPR_MAX_RAM_SLOTS); 1762 exit(EXIT_FAILURE); 1763 } 1764 1765 spapr->hotplug_memory.base = ROUND_UP(machine->ram_size, 1766 SPAPR_HOTPLUG_MEM_ALIGN); 1767 memory_region_init(&spapr->hotplug_memory.mr, OBJECT(spapr), 1768 "hotplug-memory", hotplug_mem_size); 1769 memory_region_add_subregion(sysmem, spapr->hotplug_memory.base, 1770 &spapr->hotplug_memory.mr); 1771 } 1772 1773 if (smc->dr_lmb_enabled) { 1774 spapr_create_lmb_dr_connectors(spapr); 1775 } 1776 1777 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin"); 1778 if (!filename) { 1779 error_report("Could not find LPAR rtas '%s'", "spapr-rtas.bin"); 1780 exit(1); 1781 } 1782 spapr->rtas_size = get_image_size(filename); 1783 spapr->rtas_blob = g_malloc(spapr->rtas_size); 1784 if (load_image_size(filename, spapr->rtas_blob, spapr->rtas_size) < 0) { 1785 error_report("Could not load LPAR rtas '%s'", filename); 1786 exit(1); 1787 } 1788 if (spapr->rtas_size > RTAS_MAX_SIZE) { 1789 error_report("RTAS too big ! 0x%zx bytes (max is 0x%x)", 1790 (size_t)spapr->rtas_size, RTAS_MAX_SIZE); 1791 exit(1); 1792 } 1793 g_free(filename); 1794 1795 /* Set up EPOW events infrastructure */ 1796 spapr_events_init(spapr); 1797 1798 /* Set up the RTC RTAS interfaces */ 1799 spapr_rtc_create(spapr); 1800 1801 /* Set up VIO bus */ 1802 spapr->vio_bus = spapr_vio_bus_init(); 1803 1804 for (i = 0; i < MAX_SERIAL_PORTS; i++) { 1805 if (serial_hds[i]) { 1806 spapr_vty_create(spapr->vio_bus, serial_hds[i]); 1807 } 1808 } 1809 1810 /* We always have at least the nvram device on VIO */ 1811 spapr_create_nvram(spapr); 1812 1813 /* Set up PCI */ 1814 spapr_pci_rtas_init(); 1815 1816 phb = spapr_create_phb(spapr, 0); 1817 1818 for (i = 0; i < nb_nics; i++) { 1819 NICInfo *nd = &nd_table[i]; 1820 1821 if (!nd->model) { 1822 nd->model = g_strdup("ibmveth"); 1823 } 1824 1825 if (strcmp(nd->model, "ibmveth") == 0) { 1826 spapr_vlan_create(spapr->vio_bus, nd); 1827 } else { 1828 pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); 1829 } 1830 } 1831 1832 for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { 1833 spapr_vscsi_create(spapr->vio_bus); 1834 } 1835 1836 /* Graphics */ 1837 if (spapr_vga_init(phb->bus)) { 1838 spapr->has_graphics = true; 1839 machine->usb |= defaults_enabled() && !machine->usb_disabled; 1840 } 1841 1842 if (machine->usb) { 1843 pci_create_simple(phb->bus, -1, "pci-ohci"); 1844 1845 if (spapr->has_graphics) { 1846 USBBus *usb_bus = usb_bus_find(-1); 1847 1848 usb_create_simple(usb_bus, "usb-kbd"); 1849 usb_create_simple(usb_bus, "usb-mouse"); 1850 } 1851 } 1852 1853 if (spapr->rma_size < (MIN_RMA_SLOF << 20)) { 1854 fprintf(stderr, "qemu: pSeries SLOF firmware requires >= " 1855 "%ldM guest RMA (Real Mode Area memory)\n", MIN_RMA_SLOF); 1856 exit(1); 1857 } 1858 1859 if (kernel_filename) { 1860 uint64_t lowaddr = 0; 1861 1862 kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL, 1863 NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE, 0); 1864 if (kernel_size == ELF_LOAD_WRONG_ENDIAN) { 1865 kernel_size = load_elf(kernel_filename, 1866 translate_kernel_address, NULL, 1867 NULL, &lowaddr, NULL, 0, PPC_ELF_MACHINE, 0); 1868 kernel_le = kernel_size > 0; 1869 } 1870 if (kernel_size < 0) { 1871 fprintf(stderr, "qemu: error loading %s: %s\n", 1872 kernel_filename, load_elf_strerror(kernel_size)); 1873 exit(1); 1874 } 1875 1876 /* load initrd */ 1877 if (initrd_filename) { 1878 /* Try to locate the initrd in the gap between the kernel 1879 * and the firmware. Add a bit of space just in case 1880 */ 1881 initrd_base = (KERNEL_LOAD_ADDR + kernel_size + 0x1ffff) & ~0xffff; 1882 initrd_size = load_image_targphys(initrd_filename, initrd_base, 1883 load_limit - initrd_base); 1884 if (initrd_size < 0) { 1885 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 1886 initrd_filename); 1887 exit(1); 1888 } 1889 } else { 1890 initrd_base = 0; 1891 initrd_size = 0; 1892 } 1893 } 1894 1895 if (bios_name == NULL) { 1896 bios_name = FW_FILE_NAME; 1897 } 1898 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 1899 if (!filename) { 1900 error_report("Could not find LPAR firmware '%s'", bios_name); 1901 exit(1); 1902 } 1903 fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); 1904 if (fw_size <= 0) { 1905 error_report("Could not load LPAR firmware '%s'", filename); 1906 exit(1); 1907 } 1908 g_free(filename); 1909 1910 /* FIXME: Should register things through the MachineState's qdev 1911 * interface, this is a legacy from the sPAPREnvironment structure 1912 * which predated MachineState but had a similar function */ 1913 vmstate_register(NULL, 0, &vmstate_spapr, spapr); 1914 register_savevm_live(NULL, "spapr/htab", -1, 1, 1915 &savevm_htab_handlers, spapr); 1916 1917 /* Prepare the device tree */ 1918 spapr->fdt_skel = spapr_create_fdt_skel(initrd_base, initrd_size, 1919 kernel_size, kernel_le, 1920 kernel_cmdline, 1921 spapr->check_exception_irq); 1922 assert(spapr->fdt_skel != NULL); 1923 1924 /* used by RTAS */ 1925 QTAILQ_INIT(&spapr->ccs_list); 1926 qemu_register_reset(spapr_ccs_reset_hook, spapr); 1927 1928 qemu_register_boot_set(spapr_boot_set, spapr); 1929 } 1930 1931 static int spapr_kvm_type(const char *vm_type) 1932 { 1933 if (!vm_type) { 1934 return 0; 1935 } 1936 1937 if (!strcmp(vm_type, "HV")) { 1938 return 1; 1939 } 1940 1941 if (!strcmp(vm_type, "PR")) { 1942 return 2; 1943 } 1944 1945 error_report("Unknown kvm-type specified '%s'", vm_type); 1946 exit(1); 1947 } 1948 1949 /* 1950 * Implementation of an interface to adjust firmware path 1951 * for the bootindex property handling. 1952 */ 1953 static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, 1954 DeviceState *dev) 1955 { 1956 #define CAST(type, obj, name) \ 1957 ((type *)object_dynamic_cast(OBJECT(obj), (name))) 1958 SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); 1959 sPAPRPHBState *phb = CAST(sPAPRPHBState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); 1960 1961 if (d) { 1962 void *spapr = CAST(void, bus->parent, "spapr-vscsi"); 1963 VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); 1964 USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); 1965 1966 if (spapr) { 1967 /* 1968 * Replace "channel@0/disk@0,0" with "disk@8000000000000000": 1969 * We use SRP luns of the form 8000 | (bus << 8) | (id << 5) | lun 1970 * in the top 16 bits of the 64-bit LUN 1971 */ 1972 unsigned id = 0x8000 | (d->id << 8) | d->lun; 1973 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 1974 (uint64_t)id << 48); 1975 } else if (virtio) { 1976 /* 1977 * We use SRP luns of the form 01000000 | (target << 8) | lun 1978 * in the top 32 bits of the 64-bit LUN 1979 * Note: the quote above is from SLOF and it is wrong, 1980 * the actual binding is: 1981 * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) 1982 */ 1983 unsigned id = 0x1000000 | (d->id << 16) | d->lun; 1984 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 1985 (uint64_t)id << 32); 1986 } else if (usb) { 1987 /* 1988 * We use SRP luns of the form 01000000 | (usb-port << 16) | lun 1989 * in the top 32 bits of the 64-bit LUN 1990 */ 1991 unsigned usb_port = atoi(usb->port->path); 1992 unsigned id = 0x1000000 | (usb_port << 16) | d->lun; 1993 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 1994 (uint64_t)id << 32); 1995 } 1996 } 1997 1998 if (phb) { 1999 /* Replace "pci" with "pci@800000020000000" */ 2000 return g_strdup_printf("pci@%"PRIX64, phb->buid); 2001 } 2002 2003 return NULL; 2004 } 2005 2006 static char *spapr_get_kvm_type(Object *obj, Error **errp) 2007 { 2008 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2009 2010 return g_strdup(spapr->kvm_type); 2011 } 2012 2013 static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) 2014 { 2015 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2016 2017 g_free(spapr->kvm_type); 2018 spapr->kvm_type = g_strdup(value); 2019 } 2020 2021 static void spapr_machine_initfn(Object *obj) 2022 { 2023 object_property_add_str(obj, "kvm-type", 2024 spapr_get_kvm_type, spapr_set_kvm_type, NULL); 2025 object_property_set_description(obj, "kvm-type", 2026 "Specifies the KVM virtualization mode (HV, PR)", 2027 NULL); 2028 } 2029 2030 static void ppc_cpu_do_nmi_on_cpu(void *arg) 2031 { 2032 CPUState *cs = arg; 2033 2034 cpu_synchronize_state(cs); 2035 ppc_cpu_do_system_reset(cs); 2036 } 2037 2038 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) 2039 { 2040 CPUState *cs; 2041 2042 CPU_FOREACH(cs) { 2043 async_run_on_cpu(cs, ppc_cpu_do_nmi_on_cpu, cs); 2044 } 2045 } 2046 2047 static void spapr_add_lmbs(DeviceState *dev, uint64_t addr, uint64_t size, 2048 uint32_t node, Error **errp) 2049 { 2050 sPAPRDRConnector *drc; 2051 sPAPRDRConnectorClass *drck; 2052 uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; 2053 int i, fdt_offset, fdt_size; 2054 void *fdt; 2055 2056 /* 2057 * Check for DRC connectors and send hotplug notification to the 2058 * guest only in case of hotplugged memory. This allows cold plugged 2059 * memory to be specified at boot time. 2060 */ 2061 if (!dev->hotplugged) { 2062 return; 2063 } 2064 2065 for (i = 0; i < nr_lmbs; i++) { 2066 drc = spapr_dr_connector_by_id(SPAPR_DR_CONNECTOR_TYPE_LMB, 2067 addr/SPAPR_MEMORY_BLOCK_SIZE); 2068 g_assert(drc); 2069 2070 fdt = create_device_tree(&fdt_size); 2071 fdt_offset = spapr_populate_memory_node(fdt, node, addr, 2072 SPAPR_MEMORY_BLOCK_SIZE); 2073 2074 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 2075 drck->attach(drc, dev, fdt, fdt_offset, !dev->hotplugged, errp); 2076 addr += SPAPR_MEMORY_BLOCK_SIZE; 2077 } 2078 spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, nr_lmbs); 2079 } 2080 2081 static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 2082 uint32_t node, Error **errp) 2083 { 2084 Error *local_err = NULL; 2085 sPAPRMachineState *ms = SPAPR_MACHINE(hotplug_dev); 2086 PCDIMMDevice *dimm = PC_DIMM(dev); 2087 PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); 2088 MemoryRegion *mr = ddc->get_memory_region(dimm); 2089 uint64_t align = memory_region_get_alignment(mr); 2090 uint64_t size = memory_region_size(mr); 2091 uint64_t addr; 2092 2093 if (size % SPAPR_MEMORY_BLOCK_SIZE) { 2094 error_setg(&local_err, "Hotplugged memory size must be a multiple of " 2095 "%lld MB", SPAPR_MEMORY_BLOCK_SIZE/M_BYTE); 2096 goto out; 2097 } 2098 2099 pc_dimm_memory_plug(dev, &ms->hotplug_memory, mr, align, false, &local_err); 2100 if (local_err) { 2101 goto out; 2102 } 2103 2104 addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); 2105 if (local_err) { 2106 pc_dimm_memory_unplug(dev, &ms->hotplug_memory, mr); 2107 goto out; 2108 } 2109 2110 spapr_add_lmbs(dev, addr, size, node, &error_abort); 2111 2112 out: 2113 error_propagate(errp, local_err); 2114 } 2115 2116 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, 2117 DeviceState *dev, Error **errp) 2118 { 2119 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine()); 2120 2121 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 2122 int node; 2123 2124 if (!smc->dr_lmb_enabled) { 2125 error_setg(errp, "Memory hotplug not supported for this machine"); 2126 return; 2127 } 2128 node = object_property_get_int(OBJECT(dev), PC_DIMM_NODE_PROP, errp); 2129 if (*errp) { 2130 return; 2131 } 2132 2133 /* 2134 * Currently PowerPC kernel doesn't allow hot-adding memory to 2135 * memory-less node, but instead will silently add the memory 2136 * to the first node that has some memory. This causes two 2137 * unexpected behaviours for the user. 2138 * 2139 * - Memory gets hotplugged to a different node than what the user 2140 * specified. 2141 * - Since pc-dimm subsystem in QEMU still thinks that memory belongs 2142 * to memory-less node, a reboot will set things accordingly 2143 * and the previously hotplugged memory now ends in the right node. 2144 * This appears as if some memory moved from one node to another. 2145 * 2146 * So until kernel starts supporting memory hotplug to memory-less 2147 * nodes, just prevent such attempts upfront in QEMU. 2148 */ 2149 if (nb_numa_nodes && !numa_info[node].node_mem) { 2150 error_setg(errp, "Can't hotplug memory to memory-less node %d", 2151 node); 2152 return; 2153 } 2154 2155 spapr_memory_plug(hotplug_dev, dev, node, errp); 2156 } 2157 } 2158 2159 static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, 2160 DeviceState *dev, Error **errp) 2161 { 2162 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 2163 error_setg(errp, "Memory hot unplug not supported by sPAPR"); 2164 } 2165 } 2166 2167 static HotplugHandler *spapr_get_hotpug_handler(MachineState *machine, 2168 DeviceState *dev) 2169 { 2170 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 2171 return HOTPLUG_HANDLER(machine); 2172 } 2173 return NULL; 2174 } 2175 2176 static unsigned spapr_cpu_index_to_socket_id(unsigned cpu_index) 2177 { 2178 /* Allocate to NUMA nodes on a "socket" basis (not that concept of 2179 * socket means much for the paravirtualized PAPR platform) */ 2180 return cpu_index / smp_threads / smp_cores; 2181 } 2182 2183 static void spapr_machine_class_init(ObjectClass *oc, void *data) 2184 { 2185 MachineClass *mc = MACHINE_CLASS(oc); 2186 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 2187 FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); 2188 NMIClass *nc = NMI_CLASS(oc); 2189 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 2190 2191 mc->init = ppc_spapr_init; 2192 mc->reset = ppc_spapr_reset; 2193 mc->block_default_type = IF_SCSI; 2194 mc->max_cpus = MAX_CPUMASK_BITS; 2195 mc->no_parallel = 1; 2196 mc->default_boot_order = ""; 2197 mc->default_ram_size = 512 * M_BYTE; 2198 mc->kvm_type = spapr_kvm_type; 2199 mc->has_dynamic_sysbus = true; 2200 mc->pci_allow_0_address = true; 2201 mc->get_hotplug_handler = spapr_get_hotpug_handler; 2202 hc->plug = spapr_machine_device_plug; 2203 hc->unplug = spapr_machine_device_unplug; 2204 mc->cpu_index_to_socket_id = spapr_cpu_index_to_socket_id; 2205 2206 smc->dr_lmb_enabled = false; 2207 fwc->get_dev_path = spapr_get_fw_dev_path; 2208 nc->nmi_monitor_handler = spapr_nmi; 2209 } 2210 2211 static const TypeInfo spapr_machine_info = { 2212 .name = TYPE_SPAPR_MACHINE, 2213 .parent = TYPE_MACHINE, 2214 .abstract = true, 2215 .instance_size = sizeof(sPAPRMachineState), 2216 .instance_init = spapr_machine_initfn, 2217 .class_size = sizeof(sPAPRMachineClass), 2218 .class_init = spapr_machine_class_init, 2219 .interfaces = (InterfaceInfo[]) { 2220 { TYPE_FW_PATH_PROVIDER }, 2221 { TYPE_NMI }, 2222 { TYPE_HOTPLUG_HANDLER }, 2223 { } 2224 }, 2225 }; 2226 2227 #define SPAPR_COMPAT_2_3 \ 2228 HW_COMPAT_2_3 \ 2229 {\ 2230 .driver = "spapr-pci-host-bridge",\ 2231 .property = "dynamic-reconfiguration",\ 2232 .value = "off",\ 2233 }, 2234 2235 #define SPAPR_COMPAT_2_2 \ 2236 SPAPR_COMPAT_2_3 \ 2237 HW_COMPAT_2_2 \ 2238 {\ 2239 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE,\ 2240 .property = "mem_win_size",\ 2241 .value = "0x20000000",\ 2242 }, 2243 2244 #define SPAPR_COMPAT_2_1 \ 2245 SPAPR_COMPAT_2_2 \ 2246 HW_COMPAT_2_1 2247 2248 static void spapr_compat_2_3(Object *obj) 2249 { 2250 savevm_skip_section_footers(); 2251 global_state_set_optional(); 2252 } 2253 2254 static void spapr_compat_2_2(Object *obj) 2255 { 2256 spapr_compat_2_3(obj); 2257 } 2258 2259 static void spapr_compat_2_1(Object *obj) 2260 { 2261 spapr_compat_2_2(obj); 2262 } 2263 2264 static void spapr_machine_2_3_instance_init(Object *obj) 2265 { 2266 spapr_compat_2_3(obj); 2267 spapr_machine_initfn(obj); 2268 } 2269 2270 static void spapr_machine_2_2_instance_init(Object *obj) 2271 { 2272 spapr_compat_2_2(obj); 2273 spapr_machine_initfn(obj); 2274 } 2275 2276 static void spapr_machine_2_1_instance_init(Object *obj) 2277 { 2278 spapr_compat_2_1(obj); 2279 spapr_machine_initfn(obj); 2280 } 2281 2282 static void spapr_machine_2_1_class_init(ObjectClass *oc, void *data) 2283 { 2284 MachineClass *mc = MACHINE_CLASS(oc); 2285 static GlobalProperty compat_props[] = { 2286 SPAPR_COMPAT_2_1 2287 { /* end of list */ } 2288 }; 2289 2290 mc->desc = "pSeries Logical Partition (PAPR compliant) v2.1"; 2291 mc->compat_props = compat_props; 2292 } 2293 2294 static const TypeInfo spapr_machine_2_1_info = { 2295 .name = MACHINE_TYPE_NAME("pseries-2.1"), 2296 .parent = TYPE_SPAPR_MACHINE, 2297 .class_init = spapr_machine_2_1_class_init, 2298 .instance_init = spapr_machine_2_1_instance_init, 2299 }; 2300 2301 static void spapr_machine_2_2_class_init(ObjectClass *oc, void *data) 2302 { 2303 static GlobalProperty compat_props[] = { 2304 SPAPR_COMPAT_2_2 2305 { /* end of list */ } 2306 }; 2307 MachineClass *mc = MACHINE_CLASS(oc); 2308 2309 mc->desc = "pSeries Logical Partition (PAPR compliant) v2.2"; 2310 mc->compat_props = compat_props; 2311 } 2312 2313 static const TypeInfo spapr_machine_2_2_info = { 2314 .name = MACHINE_TYPE_NAME("pseries-2.2"), 2315 .parent = TYPE_SPAPR_MACHINE, 2316 .class_init = spapr_machine_2_2_class_init, 2317 .instance_init = spapr_machine_2_2_instance_init, 2318 }; 2319 2320 static void spapr_machine_2_3_class_init(ObjectClass *oc, void *data) 2321 { 2322 static GlobalProperty compat_props[] = { 2323 SPAPR_COMPAT_2_3 2324 { /* end of list */ } 2325 }; 2326 MachineClass *mc = MACHINE_CLASS(oc); 2327 2328 mc->desc = "pSeries Logical Partition (PAPR compliant) v2.3"; 2329 mc->compat_props = compat_props; 2330 } 2331 2332 static const TypeInfo spapr_machine_2_3_info = { 2333 .name = MACHINE_TYPE_NAME("pseries-2.3"), 2334 .parent = TYPE_SPAPR_MACHINE, 2335 .class_init = spapr_machine_2_3_class_init, 2336 .instance_init = spapr_machine_2_3_instance_init, 2337 }; 2338 2339 static void spapr_machine_2_4_class_init(ObjectClass *oc, void *data) 2340 { 2341 MachineClass *mc = MACHINE_CLASS(oc); 2342 2343 mc->desc = "pSeries Logical Partition (PAPR compliant) v2.4"; 2344 mc->alias = "pseries"; 2345 mc->is_default = 0; 2346 } 2347 2348 static const TypeInfo spapr_machine_2_4_info = { 2349 .name = MACHINE_TYPE_NAME("pseries-2.4"), 2350 .parent = TYPE_SPAPR_MACHINE, 2351 .class_init = spapr_machine_2_4_class_init, 2352 }; 2353 2354 static void spapr_machine_2_5_class_init(ObjectClass *oc, void *data) 2355 { 2356 MachineClass *mc = MACHINE_CLASS(oc); 2357 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 2358 2359 mc->name = "pseries-2.5"; 2360 mc->desc = "pSeries Logical Partition (PAPR compliant) v2.5"; 2361 mc->alias = "pseries"; 2362 mc->is_default = 1; 2363 smc->dr_lmb_enabled = true; 2364 } 2365 2366 static const TypeInfo spapr_machine_2_5_info = { 2367 .name = MACHINE_TYPE_NAME("pseries-2.5"), 2368 .parent = TYPE_SPAPR_MACHINE, 2369 .class_init = spapr_machine_2_5_class_init, 2370 }; 2371 2372 static void spapr_machine_register_types(void) 2373 { 2374 type_register_static(&spapr_machine_info); 2375 type_register_static(&spapr_machine_2_1_info); 2376 type_register_static(&spapr_machine_2_2_info); 2377 type_register_static(&spapr_machine_2_3_info); 2378 type_register_static(&spapr_machine_2_4_info); 2379 type_register_static(&spapr_machine_2_5_info); 2380 } 2381 2382 type_init(spapr_machine_register_types) 2383