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 "qemu/osdep.h" 28 #include "qapi/error.h" 29 #include "qapi/visitor.h" 30 #include "sysemu/sysemu.h" 31 #include "sysemu/numa.h" 32 #include "hw/hw.h" 33 #include "qemu/log.h" 34 #include "hw/fw-path-provider.h" 35 #include "elf.h" 36 #include "net/net.h" 37 #include "sysemu/device_tree.h" 38 #include "sysemu/cpus.h" 39 #include "sysemu/hw_accel.h" 40 #include "kvm_ppc.h" 41 #include "migration/misc.h" 42 #include "migration/global_state.h" 43 #include "migration/register.h" 44 #include "mmu-hash64.h" 45 #include "mmu-book3s-v3.h" 46 #include "cpu-models.h" 47 #include "qom/cpu.h" 48 49 #include "hw/boards.h" 50 #include "hw/ppc/ppc.h" 51 #include "hw/loader.h" 52 53 #include "hw/ppc/fdt.h" 54 #include "hw/ppc/spapr.h" 55 #include "hw/ppc/spapr_vio.h" 56 #include "hw/pci-host/spapr.h" 57 #include "hw/pci/msi.h" 58 59 #include "hw/pci/pci.h" 60 #include "hw/scsi/scsi.h" 61 #include "hw/virtio/virtio-scsi.h" 62 #include "hw/virtio/vhost-scsi-common.h" 63 64 #include "exec/address-spaces.h" 65 #include "exec/ram_addr.h" 66 #include "hw/usb.h" 67 #include "qemu/config-file.h" 68 #include "qemu/error-report.h" 69 #include "trace.h" 70 #include "hw/nmi.h" 71 #include "hw/intc/intc.h" 72 73 #include "hw/compat.h" 74 #include "qemu/cutils.h" 75 #include "hw/ppc/spapr_cpu_core.h" 76 #include "hw/mem/memory-device.h" 77 78 #include <libfdt.h> 79 80 /* SLOF memory layout: 81 * 82 * SLOF raw image loaded at 0, copies its romfs right below the flat 83 * device-tree, then position SLOF itself 31M below that 84 * 85 * So we set FW_OVERHEAD to 40MB which should account for all of that 86 * and more 87 * 88 * We load our kernel at 4M, leaving space for SLOF initial image 89 */ 90 #define FDT_MAX_SIZE 0x100000 91 #define RTAS_MAX_SIZE 0x10000 92 #define RTAS_MAX_ADDR 0x80000000 /* RTAS must stay below that */ 93 #define FW_MAX_SIZE 0x400000 94 #define FW_FILE_NAME "slof.bin" 95 #define FW_OVERHEAD 0x2800000 96 #define KERNEL_LOAD_ADDR FW_MAX_SIZE 97 98 #define MIN_RMA_SLOF 128UL 99 100 #define PHANDLE_XICP 0x00001111 101 102 /* These two functions implement the VCPU id numbering: one to compute them 103 * all and one to identify thread 0 of a VCORE. Any change to the first one 104 * is likely to have an impact on the second one, so let's keep them close. 105 */ 106 static int spapr_vcpu_id(sPAPRMachineState *spapr, int cpu_index) 107 { 108 assert(spapr->vsmt); 109 return 110 (cpu_index / smp_threads) * spapr->vsmt + cpu_index % smp_threads; 111 } 112 static bool spapr_is_thread0_in_vcore(sPAPRMachineState *spapr, 113 PowerPCCPU *cpu) 114 { 115 assert(spapr->vsmt); 116 return spapr_get_vcpu_id(cpu) % spapr->vsmt == 0; 117 } 118 119 static bool pre_2_10_vmstate_dummy_icp_needed(void *opaque) 120 { 121 /* Dummy entries correspond to unused ICPState objects in older QEMUs, 122 * and newer QEMUs don't even have them. In both cases, we don't want 123 * to send anything on the wire. 124 */ 125 return false; 126 } 127 128 static const VMStateDescription pre_2_10_vmstate_dummy_icp = { 129 .name = "icp/server", 130 .version_id = 1, 131 .minimum_version_id = 1, 132 .needed = pre_2_10_vmstate_dummy_icp_needed, 133 .fields = (VMStateField[]) { 134 VMSTATE_UNUSED(4), /* uint32_t xirr */ 135 VMSTATE_UNUSED(1), /* uint8_t pending_priority */ 136 VMSTATE_UNUSED(1), /* uint8_t mfrr */ 137 VMSTATE_END_OF_LIST() 138 }, 139 }; 140 141 static void pre_2_10_vmstate_register_dummy_icp(int i) 142 { 143 vmstate_register(NULL, i, &pre_2_10_vmstate_dummy_icp, 144 (void *)(uintptr_t) i); 145 } 146 147 static void pre_2_10_vmstate_unregister_dummy_icp(int i) 148 { 149 vmstate_unregister(NULL, &pre_2_10_vmstate_dummy_icp, 150 (void *)(uintptr_t) i); 151 } 152 153 static int xics_max_server_number(sPAPRMachineState *spapr) 154 { 155 assert(spapr->vsmt); 156 return DIV_ROUND_UP(max_cpus * spapr->vsmt, smp_threads); 157 } 158 159 static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, 160 int smt_threads) 161 { 162 int i, ret = 0; 163 uint32_t servers_prop[smt_threads]; 164 uint32_t gservers_prop[smt_threads * 2]; 165 int index = spapr_get_vcpu_id(cpu); 166 167 if (cpu->compat_pvr) { 168 ret = fdt_setprop_cell(fdt, offset, "cpu-version", cpu->compat_pvr); 169 if (ret < 0) { 170 return ret; 171 } 172 } 173 174 /* Build interrupt servers and gservers properties */ 175 for (i = 0; i < smt_threads; i++) { 176 servers_prop[i] = cpu_to_be32(index + i); 177 /* Hack, direct the group queues back to cpu 0 */ 178 gservers_prop[i*2] = cpu_to_be32(index + i); 179 gservers_prop[i*2 + 1] = 0; 180 } 181 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s", 182 servers_prop, sizeof(servers_prop)); 183 if (ret < 0) { 184 return ret; 185 } 186 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s", 187 gservers_prop, sizeof(gservers_prop)); 188 189 return ret; 190 } 191 192 static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu) 193 { 194 int index = spapr_get_vcpu_id(cpu); 195 uint32_t associativity[] = {cpu_to_be32(0x5), 196 cpu_to_be32(0x0), 197 cpu_to_be32(0x0), 198 cpu_to_be32(0x0), 199 cpu_to_be32(cpu->node_id), 200 cpu_to_be32(index)}; 201 202 /* Advertise NUMA via ibm,associativity */ 203 return fdt_setprop(fdt, offset, "ibm,associativity", associativity, 204 sizeof(associativity)); 205 } 206 207 /* Populate the "ibm,pa-features" property */ 208 static void spapr_populate_pa_features(sPAPRMachineState *spapr, 209 PowerPCCPU *cpu, 210 void *fdt, int offset, 211 bool legacy_guest) 212 { 213 uint8_t pa_features_206[] = { 6, 0, 214 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; 215 uint8_t pa_features_207[] = { 24, 0, 216 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, 217 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 218 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 219 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }; 220 uint8_t pa_features_300[] = { 66, 0, 221 /* 0: MMU|FPU|SLB|RUN|DABR|NX, 1: fri[nzpm]|DABRX|SPRG3|SLB0|PP110 */ 222 /* 2: VPM|DS205|PPR|DS202|DS206, 3: LSD|URG, SSO, 5: LE|CFAR|EB|LSQ */ 223 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, /* 0 - 5 */ 224 /* 6: DS207 */ 225 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, /* 6 - 11 */ 226 /* 16: Vector */ 227 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, /* 12 - 17 */ 228 /* 18: Vec. Scalar, 20: Vec. XOR, 22: HTM */ 229 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 18 - 23 */ 230 /* 24: Ext. Dec, 26: 64 bit ftrs, 28: PM ftrs */ 231 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 24 - 29 */ 232 /* 30: MMR, 32: LE atomic, 34: EBB + ext EBB */ 233 0x80, 0x00, 0x80, 0x00, 0xC0, 0x00, /* 30 - 35 */ 234 /* 36: SPR SO, 38: Copy/Paste, 40: Radix MMU */ 235 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 36 - 41 */ 236 /* 42: PM, 44: PC RA, 46: SC vec'd */ 237 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 42 - 47 */ 238 /* 48: SIMD, 50: QP BFP, 52: String */ 239 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 - 53 */ 240 /* 54: DecFP, 56: DecI, 58: SHA */ 241 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 54 - 59 */ 242 /* 60: NM atomic, 62: RNG */ 243 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 60 - 65 */ 244 }; 245 uint8_t *pa_features = NULL; 246 size_t pa_size; 247 248 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_06, 0, cpu->compat_pvr)) { 249 pa_features = pa_features_206; 250 pa_size = sizeof(pa_features_206); 251 } 252 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_07, 0, cpu->compat_pvr)) { 253 pa_features = pa_features_207; 254 pa_size = sizeof(pa_features_207); 255 } 256 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0, cpu->compat_pvr)) { 257 pa_features = pa_features_300; 258 pa_size = sizeof(pa_features_300); 259 } 260 if (!pa_features) { 261 return; 262 } 263 264 if (ppc_hash64_has(cpu, PPC_HASH64_CI_LARGEPAGE)) { 265 /* 266 * Note: we keep CI large pages off by default because a 64K capable 267 * guest provisioned with large pages might otherwise try to map a qemu 268 * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages 269 * even if that qemu runs on a 4k host. 270 * We dd this bit back here if we are confident this is not an issue 271 */ 272 pa_features[3] |= 0x20; 273 } 274 if ((spapr_get_cap(spapr, SPAPR_CAP_HTM) != 0) && pa_size > 24) { 275 pa_features[24] |= 0x80; /* Transactional memory support */ 276 } 277 if (legacy_guest && pa_size > 40) { 278 /* Workaround for broken kernels that attempt (guest) radix 279 * mode when they can't handle it, if they see the radix bit set 280 * in pa-features. So hide it from them. */ 281 pa_features[40 + 2] &= ~0x80; /* Radix MMU */ 282 } 283 284 _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); 285 } 286 287 static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) 288 { 289 int ret = 0, offset, cpus_offset; 290 CPUState *cs; 291 char cpu_model[32]; 292 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 293 294 CPU_FOREACH(cs) { 295 PowerPCCPU *cpu = POWERPC_CPU(cs); 296 DeviceClass *dc = DEVICE_GET_CLASS(cs); 297 int index = spapr_get_vcpu_id(cpu); 298 int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); 299 300 if (!spapr_is_thread0_in_vcore(spapr, cpu)) { 301 continue; 302 } 303 304 snprintf(cpu_model, 32, "%s@%x", dc->fw_name, index); 305 306 cpus_offset = fdt_path_offset(fdt, "/cpus"); 307 if (cpus_offset < 0) { 308 cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); 309 if (cpus_offset < 0) { 310 return cpus_offset; 311 } 312 } 313 offset = fdt_subnode_offset(fdt, cpus_offset, cpu_model); 314 if (offset < 0) { 315 offset = fdt_add_subnode(fdt, cpus_offset, cpu_model); 316 if (offset < 0) { 317 return offset; 318 } 319 } 320 321 ret = fdt_setprop(fdt, offset, "ibm,pft-size", 322 pft_size_prop, sizeof(pft_size_prop)); 323 if (ret < 0) { 324 return ret; 325 } 326 327 if (nb_numa_nodes > 1) { 328 ret = spapr_fixup_cpu_numa_dt(fdt, offset, cpu); 329 if (ret < 0) { 330 return ret; 331 } 332 } 333 334 ret = spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt); 335 if (ret < 0) { 336 return ret; 337 } 338 339 spapr_populate_pa_features(spapr, cpu, fdt, offset, 340 spapr->cas_legacy_guest_workaround); 341 } 342 return ret; 343 } 344 345 static hwaddr spapr_node0_size(MachineState *machine) 346 { 347 if (nb_numa_nodes) { 348 int i; 349 for (i = 0; i < nb_numa_nodes; ++i) { 350 if (numa_info[i].node_mem) { 351 return MIN(pow2floor(numa_info[i].node_mem), 352 machine->ram_size); 353 } 354 } 355 } 356 return machine->ram_size; 357 } 358 359 static void add_str(GString *s, const gchar *s1) 360 { 361 g_string_append_len(s, s1, strlen(s1) + 1); 362 } 363 364 static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start, 365 hwaddr size) 366 { 367 uint32_t associativity[] = { 368 cpu_to_be32(0x4), /* length */ 369 cpu_to_be32(0x0), cpu_to_be32(0x0), 370 cpu_to_be32(0x0), cpu_to_be32(nodeid) 371 }; 372 char mem_name[32]; 373 uint64_t mem_reg_property[2]; 374 int off; 375 376 mem_reg_property[0] = cpu_to_be64(start); 377 mem_reg_property[1] = cpu_to_be64(size); 378 379 sprintf(mem_name, "memory@" TARGET_FMT_lx, start); 380 off = fdt_add_subnode(fdt, 0, mem_name); 381 _FDT(off); 382 _FDT((fdt_setprop_string(fdt, off, "device_type", "memory"))); 383 _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property, 384 sizeof(mem_reg_property)))); 385 _FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity, 386 sizeof(associativity)))); 387 return off; 388 } 389 390 static int spapr_populate_memory(sPAPRMachineState *spapr, void *fdt) 391 { 392 MachineState *machine = MACHINE(spapr); 393 hwaddr mem_start, node_size; 394 int i, nb_nodes = nb_numa_nodes; 395 NodeInfo *nodes = numa_info; 396 NodeInfo ramnode; 397 398 /* No NUMA nodes, assume there is just one node with whole RAM */ 399 if (!nb_numa_nodes) { 400 nb_nodes = 1; 401 ramnode.node_mem = machine->ram_size; 402 nodes = &ramnode; 403 } 404 405 for (i = 0, mem_start = 0; i < nb_nodes; ++i) { 406 if (!nodes[i].node_mem) { 407 continue; 408 } 409 if (mem_start >= machine->ram_size) { 410 node_size = 0; 411 } else { 412 node_size = nodes[i].node_mem; 413 if (node_size > machine->ram_size - mem_start) { 414 node_size = machine->ram_size - mem_start; 415 } 416 } 417 if (!mem_start) { 418 /* spapr_machine_init() checks for rma_size <= node0_size 419 * already */ 420 spapr_populate_memory_node(fdt, i, 0, spapr->rma_size); 421 mem_start += spapr->rma_size; 422 node_size -= spapr->rma_size; 423 } 424 for ( ; node_size; ) { 425 hwaddr sizetmp = pow2floor(node_size); 426 427 /* mem_start != 0 here */ 428 if (ctzl(mem_start) < ctzl(sizetmp)) { 429 sizetmp = 1ULL << ctzl(mem_start); 430 } 431 432 spapr_populate_memory_node(fdt, i, mem_start, sizetmp); 433 node_size -= sizetmp; 434 mem_start += sizetmp; 435 } 436 } 437 438 return 0; 439 } 440 441 static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, 442 sPAPRMachineState *spapr) 443 { 444 PowerPCCPU *cpu = POWERPC_CPU(cs); 445 CPUPPCState *env = &cpu->env; 446 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); 447 int index = spapr_get_vcpu_id(cpu); 448 uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 449 0xffffffff, 0xffffffff}; 450 uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() 451 : SPAPR_TIMEBASE_FREQ; 452 uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000; 453 uint32_t page_sizes_prop[64]; 454 size_t page_sizes_prop_size; 455 uint32_t vcpus_per_socket = smp_threads * smp_cores; 456 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 457 int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); 458 sPAPRDRConnector *drc; 459 int drc_index; 460 uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ]; 461 int i; 462 463 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index); 464 if (drc) { 465 drc_index = spapr_drc_index(drc); 466 _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index))); 467 } 468 469 _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); 470 _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); 471 472 _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR]))); 473 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size", 474 env->dcache_line_size))); 475 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size", 476 env->dcache_line_size))); 477 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size", 478 env->icache_line_size))); 479 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size", 480 env->icache_line_size))); 481 482 if (pcc->l1_dcache_size) { 483 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size", 484 pcc->l1_dcache_size))); 485 } else { 486 warn_report("Unknown L1 dcache size for cpu"); 487 } 488 if (pcc->l1_icache_size) { 489 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size", 490 pcc->l1_icache_size))); 491 } else { 492 warn_report("Unknown L1 icache size for cpu"); 493 } 494 495 _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq))); 496 _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq))); 497 _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size))); 498 _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size))); 499 _FDT((fdt_setprop_string(fdt, offset, "status", "okay"))); 500 _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0))); 501 502 if (env->spr_cb[SPR_PURR].oea_read) { 503 _FDT((fdt_setprop(fdt, offset, "ibm,purr", NULL, 0))); 504 } 505 506 if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) { 507 _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes", 508 segs, sizeof(segs)))); 509 } 510 511 /* Advertise VSX (vector extensions) if available 512 * 1 == VMX / Altivec available 513 * 2 == VSX available 514 * 515 * Only CPUs for which we create core types in spapr_cpu_core.c 516 * are possible, and all of those have VMX */ 517 if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) { 518 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2))); 519 } else { 520 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1))); 521 } 522 523 /* Advertise DFP (Decimal Floating Point) if available 524 * 0 / no property == no DFP 525 * 1 == DFP available */ 526 if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) { 527 _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); 528 } 529 530 page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop, 531 sizeof(page_sizes_prop)); 532 if (page_sizes_prop_size) { 533 _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes", 534 page_sizes_prop, page_sizes_prop_size))); 535 } 536 537 spapr_populate_pa_features(spapr, cpu, fdt, offset, false); 538 539 _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", 540 cs->cpu_index / vcpus_per_socket))); 541 542 _FDT((fdt_setprop(fdt, offset, "ibm,pft-size", 543 pft_size_prop, sizeof(pft_size_prop)))); 544 545 if (nb_numa_nodes > 1) { 546 _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu)); 547 } 548 549 _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt)); 550 551 if (pcc->radix_page_info) { 552 for (i = 0; i < pcc->radix_page_info->count; i++) { 553 radix_AP_encodings[i] = 554 cpu_to_be32(pcc->radix_page_info->entries[i]); 555 } 556 _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings", 557 radix_AP_encodings, 558 pcc->radix_page_info->count * 559 sizeof(radix_AP_encodings[0])))); 560 } 561 } 562 563 static void spapr_populate_cpus_dt_node(void *fdt, sPAPRMachineState *spapr) 564 { 565 CPUState **rev; 566 CPUState *cs; 567 int n_cpus; 568 int cpus_offset; 569 char *nodename; 570 int i; 571 572 cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); 573 _FDT(cpus_offset); 574 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1))); 575 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0))); 576 577 /* 578 * We walk the CPUs in reverse order to ensure that CPU DT nodes 579 * created by fdt_add_subnode() end up in the right order in FDT 580 * for the guest kernel the enumerate the CPUs correctly. 581 * 582 * The CPU list cannot be traversed in reverse order, so we need 583 * to do extra work. 584 */ 585 n_cpus = 0; 586 rev = NULL; 587 CPU_FOREACH(cs) { 588 rev = g_renew(CPUState *, rev, n_cpus + 1); 589 rev[n_cpus++] = cs; 590 } 591 592 for (i = n_cpus - 1; i >= 0; i--) { 593 CPUState *cs = rev[i]; 594 PowerPCCPU *cpu = POWERPC_CPU(cs); 595 int index = spapr_get_vcpu_id(cpu); 596 DeviceClass *dc = DEVICE_GET_CLASS(cs); 597 int offset; 598 599 if (!spapr_is_thread0_in_vcore(spapr, cpu)) { 600 continue; 601 } 602 603 nodename = g_strdup_printf("%s@%x", dc->fw_name, index); 604 offset = fdt_add_subnode(fdt, cpus_offset, nodename); 605 g_free(nodename); 606 _FDT(offset); 607 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 608 } 609 610 g_free(rev); 611 } 612 613 static uint32_t spapr_pc_dimm_node(MemoryDeviceInfoList *list, ram_addr_t addr) 614 { 615 MemoryDeviceInfoList *info; 616 617 for (info = list; info; info = info->next) { 618 MemoryDeviceInfo *value = info->value; 619 620 if (value && value->type == MEMORY_DEVICE_INFO_KIND_DIMM) { 621 PCDIMMDeviceInfo *pcdimm_info = value->u.dimm.data; 622 623 if (addr >= pcdimm_info->addr && 624 addr < (pcdimm_info->addr + pcdimm_info->size)) { 625 return pcdimm_info->node; 626 } 627 } 628 } 629 630 return -1; 631 } 632 633 struct sPAPRDrconfCellV2 { 634 uint32_t seq_lmbs; 635 uint64_t base_addr; 636 uint32_t drc_index; 637 uint32_t aa_index; 638 uint32_t flags; 639 } QEMU_PACKED; 640 641 typedef struct DrconfCellQueue { 642 struct sPAPRDrconfCellV2 cell; 643 QSIMPLEQ_ENTRY(DrconfCellQueue) entry; 644 } DrconfCellQueue; 645 646 static DrconfCellQueue * 647 spapr_get_drconf_cell(uint32_t seq_lmbs, uint64_t base_addr, 648 uint32_t drc_index, uint32_t aa_index, 649 uint32_t flags) 650 { 651 DrconfCellQueue *elem; 652 653 elem = g_malloc0(sizeof(*elem)); 654 elem->cell.seq_lmbs = cpu_to_be32(seq_lmbs); 655 elem->cell.base_addr = cpu_to_be64(base_addr); 656 elem->cell.drc_index = cpu_to_be32(drc_index); 657 elem->cell.aa_index = cpu_to_be32(aa_index); 658 elem->cell.flags = cpu_to_be32(flags); 659 660 return elem; 661 } 662 663 /* ibm,dynamic-memory-v2 */ 664 static int spapr_populate_drmem_v2(sPAPRMachineState *spapr, void *fdt, 665 int offset, MemoryDeviceInfoList *dimms) 666 { 667 MachineState *machine = MACHINE(spapr); 668 uint8_t *int_buf, *cur_index, buf_len; 669 int ret; 670 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 671 uint64_t addr, cur_addr, size; 672 uint32_t nr_boot_lmbs = (machine->device_memory->base / lmb_size); 673 uint64_t mem_end = machine->device_memory->base + 674 memory_region_size(&machine->device_memory->mr); 675 uint32_t node, nr_entries = 0; 676 sPAPRDRConnector *drc; 677 DrconfCellQueue *elem, *next; 678 MemoryDeviceInfoList *info; 679 QSIMPLEQ_HEAD(, DrconfCellQueue) drconf_queue 680 = QSIMPLEQ_HEAD_INITIALIZER(drconf_queue); 681 682 /* Entry to cover RAM and the gap area */ 683 elem = spapr_get_drconf_cell(nr_boot_lmbs, 0, 0, -1, 684 SPAPR_LMB_FLAGS_RESERVED | 685 SPAPR_LMB_FLAGS_DRC_INVALID); 686 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 687 nr_entries++; 688 689 cur_addr = machine->device_memory->base; 690 for (info = dimms; info; info = info->next) { 691 PCDIMMDeviceInfo *di = info->value->u.dimm.data; 692 693 addr = di->addr; 694 size = di->size; 695 node = di->node; 696 697 /* Entry for hot-pluggable area */ 698 if (cur_addr < addr) { 699 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 700 g_assert(drc); 701 elem = spapr_get_drconf_cell((addr - cur_addr) / lmb_size, 702 cur_addr, spapr_drc_index(drc), -1, 0); 703 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 704 nr_entries++; 705 } 706 707 /* Entry for DIMM */ 708 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / lmb_size); 709 g_assert(drc); 710 elem = spapr_get_drconf_cell(size / lmb_size, addr, 711 spapr_drc_index(drc), node, 712 SPAPR_LMB_FLAGS_ASSIGNED); 713 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 714 nr_entries++; 715 cur_addr = addr + size; 716 } 717 718 /* Entry for remaining hotpluggable area */ 719 if (cur_addr < mem_end) { 720 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 721 g_assert(drc); 722 elem = spapr_get_drconf_cell((mem_end - cur_addr) / lmb_size, 723 cur_addr, spapr_drc_index(drc), -1, 0); 724 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 725 nr_entries++; 726 } 727 728 buf_len = nr_entries * sizeof(struct sPAPRDrconfCellV2) + sizeof(uint32_t); 729 int_buf = cur_index = g_malloc0(buf_len); 730 *(uint32_t *)int_buf = cpu_to_be32(nr_entries); 731 cur_index += sizeof(nr_entries); 732 733 QSIMPLEQ_FOREACH_SAFE(elem, &drconf_queue, entry, next) { 734 memcpy(cur_index, &elem->cell, sizeof(elem->cell)); 735 cur_index += sizeof(elem->cell); 736 QSIMPLEQ_REMOVE(&drconf_queue, elem, DrconfCellQueue, entry); 737 g_free(elem); 738 } 739 740 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory-v2", int_buf, buf_len); 741 g_free(int_buf); 742 if (ret < 0) { 743 return -1; 744 } 745 return 0; 746 } 747 748 /* ibm,dynamic-memory */ 749 static int spapr_populate_drmem_v1(sPAPRMachineState *spapr, void *fdt, 750 int offset, MemoryDeviceInfoList *dimms) 751 { 752 MachineState *machine = MACHINE(spapr); 753 int i, ret; 754 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 755 uint32_t device_lmb_start = machine->device_memory->base / lmb_size; 756 uint32_t nr_lmbs = (machine->device_memory->base + 757 memory_region_size(&machine->device_memory->mr)) / 758 lmb_size; 759 uint32_t *int_buf, *cur_index, buf_len; 760 761 /* 762 * Allocate enough buffer size to fit in ibm,dynamic-memory 763 */ 764 buf_len = (nr_lmbs * SPAPR_DR_LMB_LIST_ENTRY_SIZE + 1) * sizeof(uint32_t); 765 cur_index = int_buf = g_malloc0(buf_len); 766 int_buf[0] = cpu_to_be32(nr_lmbs); 767 cur_index++; 768 for (i = 0; i < nr_lmbs; i++) { 769 uint64_t addr = i * lmb_size; 770 uint32_t *dynamic_memory = cur_index; 771 772 if (i >= device_lmb_start) { 773 sPAPRDRConnector *drc; 774 775 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, i); 776 g_assert(drc); 777 778 dynamic_memory[0] = cpu_to_be32(addr >> 32); 779 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 780 dynamic_memory[2] = cpu_to_be32(spapr_drc_index(drc)); 781 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 782 dynamic_memory[4] = cpu_to_be32(spapr_pc_dimm_node(dimms, addr)); 783 if (memory_region_present(get_system_memory(), addr)) { 784 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_ASSIGNED); 785 } else { 786 dynamic_memory[5] = cpu_to_be32(0); 787 } 788 } else { 789 /* 790 * LMB information for RMA, boot time RAM and gap b/n RAM and 791 * device memory region -- all these are marked as reserved 792 * and as having no valid DRC. 793 */ 794 dynamic_memory[0] = cpu_to_be32(addr >> 32); 795 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 796 dynamic_memory[2] = cpu_to_be32(0); 797 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 798 dynamic_memory[4] = cpu_to_be32(-1); 799 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_RESERVED | 800 SPAPR_LMB_FLAGS_DRC_INVALID); 801 } 802 803 cur_index += SPAPR_DR_LMB_LIST_ENTRY_SIZE; 804 } 805 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory", int_buf, buf_len); 806 g_free(int_buf); 807 if (ret < 0) { 808 return -1; 809 } 810 return 0; 811 } 812 813 /* 814 * Adds ibm,dynamic-reconfiguration-memory node. 815 * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation 816 * of this device tree node. 817 */ 818 static int spapr_populate_drconf_memory(sPAPRMachineState *spapr, void *fdt) 819 { 820 MachineState *machine = MACHINE(spapr); 821 int ret, i, offset; 822 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 823 uint32_t prop_lmb_size[] = {0, cpu_to_be32(lmb_size)}; 824 uint32_t *int_buf, *cur_index, buf_len; 825 int nr_nodes = nb_numa_nodes ? nb_numa_nodes : 1; 826 MemoryDeviceInfoList *dimms = NULL; 827 828 /* 829 * Don't create the node if there is no device memory 830 */ 831 if (machine->ram_size == machine->maxram_size) { 832 return 0; 833 } 834 835 offset = fdt_add_subnode(fdt, 0, "ibm,dynamic-reconfiguration-memory"); 836 837 ret = fdt_setprop(fdt, offset, "ibm,lmb-size", prop_lmb_size, 838 sizeof(prop_lmb_size)); 839 if (ret < 0) { 840 return ret; 841 } 842 843 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-flags-mask", 0xff); 844 if (ret < 0) { 845 return ret; 846 } 847 848 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-preservation-time", 0x0); 849 if (ret < 0) { 850 return ret; 851 } 852 853 /* ibm,dynamic-memory or ibm,dynamic-memory-v2 */ 854 dimms = qmp_memory_device_list(); 855 if (spapr_ovec_test(spapr->ov5_cas, OV5_DRMEM_V2)) { 856 ret = spapr_populate_drmem_v2(spapr, fdt, offset, dimms); 857 } else { 858 ret = spapr_populate_drmem_v1(spapr, fdt, offset, dimms); 859 } 860 qapi_free_MemoryDeviceInfoList(dimms); 861 862 if (ret < 0) { 863 return ret; 864 } 865 866 /* ibm,associativity-lookup-arrays */ 867 buf_len = (nr_nodes * 4 + 2) * sizeof(uint32_t); 868 cur_index = int_buf = g_malloc0(buf_len); 869 870 cur_index = int_buf; 871 int_buf[0] = cpu_to_be32(nr_nodes); 872 int_buf[1] = cpu_to_be32(4); /* Number of entries per associativity list */ 873 cur_index += 2; 874 for (i = 0; i < nr_nodes; i++) { 875 uint32_t associativity[] = { 876 cpu_to_be32(0x0), 877 cpu_to_be32(0x0), 878 cpu_to_be32(0x0), 879 cpu_to_be32(i) 880 }; 881 memcpy(cur_index, associativity, sizeof(associativity)); 882 cur_index += 4; 883 } 884 ret = fdt_setprop(fdt, offset, "ibm,associativity-lookup-arrays", int_buf, 885 (cur_index - int_buf) * sizeof(uint32_t)); 886 g_free(int_buf); 887 888 return ret; 889 } 890 891 static int spapr_dt_cas_updates(sPAPRMachineState *spapr, void *fdt, 892 sPAPROptionVector *ov5_updates) 893 { 894 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 895 int ret = 0, offset; 896 897 /* Generate ibm,dynamic-reconfiguration-memory node if required */ 898 if (spapr_ovec_test(ov5_updates, OV5_DRCONF_MEMORY)) { 899 g_assert(smc->dr_lmb_enabled); 900 ret = spapr_populate_drconf_memory(spapr, fdt); 901 if (ret) { 902 goto out; 903 } 904 } 905 906 offset = fdt_path_offset(fdt, "/chosen"); 907 if (offset < 0) { 908 offset = fdt_add_subnode(fdt, 0, "chosen"); 909 if (offset < 0) { 910 return offset; 911 } 912 } 913 ret = spapr_ovec_populate_dt(fdt, offset, spapr->ov5_cas, 914 "ibm,architecture-vec-5"); 915 916 out: 917 return ret; 918 } 919 920 static bool spapr_hotplugged_dev_before_cas(void) 921 { 922 Object *drc_container, *obj; 923 ObjectProperty *prop; 924 ObjectPropertyIterator iter; 925 926 drc_container = container_get(object_get_root(), "/dr-connector"); 927 object_property_iter_init(&iter, drc_container); 928 while ((prop = object_property_iter_next(&iter))) { 929 if (!strstart(prop->type, "link<", NULL)) { 930 continue; 931 } 932 obj = object_property_get_link(drc_container, prop->name, NULL); 933 if (spapr_drc_needed(obj)) { 934 return true; 935 } 936 } 937 return false; 938 } 939 940 int spapr_h_cas_compose_response(sPAPRMachineState *spapr, 941 target_ulong addr, target_ulong size, 942 sPAPROptionVector *ov5_updates) 943 { 944 void *fdt, *fdt_skel; 945 sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 }; 946 947 if (spapr_hotplugged_dev_before_cas()) { 948 return 1; 949 } 950 951 if (size < sizeof(hdr) || size > FW_MAX_SIZE) { 952 error_report("SLOF provided an unexpected CAS buffer size " 953 TARGET_FMT_lu " (min: %zu, max: %u)", 954 size, sizeof(hdr), FW_MAX_SIZE); 955 exit(EXIT_FAILURE); 956 } 957 958 size -= sizeof(hdr); 959 960 /* Create skeleton */ 961 fdt_skel = g_malloc0(size); 962 _FDT((fdt_create(fdt_skel, size))); 963 _FDT((fdt_finish_reservemap(fdt_skel))); 964 _FDT((fdt_begin_node(fdt_skel, ""))); 965 _FDT((fdt_end_node(fdt_skel))); 966 _FDT((fdt_finish(fdt_skel))); 967 fdt = g_malloc0(size); 968 _FDT((fdt_open_into(fdt_skel, fdt, size))); 969 g_free(fdt_skel); 970 971 /* Fixup cpu nodes */ 972 _FDT((spapr_fixup_cpu_dt(fdt, spapr))); 973 974 if (spapr_dt_cas_updates(spapr, fdt, ov5_updates)) { 975 return -1; 976 } 977 978 /* Pack resulting tree */ 979 _FDT((fdt_pack(fdt))); 980 981 if (fdt_totalsize(fdt) + sizeof(hdr) > size) { 982 trace_spapr_cas_failed(size); 983 return -1; 984 } 985 986 cpu_physical_memory_write(addr, &hdr, sizeof(hdr)); 987 cpu_physical_memory_write(addr + sizeof(hdr), fdt, fdt_totalsize(fdt)); 988 trace_spapr_cas_continue(fdt_totalsize(fdt) + sizeof(hdr)); 989 g_free(fdt); 990 991 return 0; 992 } 993 994 static void spapr_dt_rtas(sPAPRMachineState *spapr, void *fdt) 995 { 996 int rtas; 997 GString *hypertas = g_string_sized_new(256); 998 GString *qemu_hypertas = g_string_sized_new(256); 999 uint32_t refpoints[] = { cpu_to_be32(0x4), cpu_to_be32(0x4) }; 1000 uint64_t max_device_addr = MACHINE(spapr)->device_memory->base + 1001 memory_region_size(&MACHINE(spapr)->device_memory->mr); 1002 uint32_t lrdr_capacity[] = { 1003 cpu_to_be32(max_device_addr >> 32), 1004 cpu_to_be32(max_device_addr & 0xffffffff), 1005 0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE), 1006 cpu_to_be32(max_cpus / smp_threads), 1007 }; 1008 uint32_t maxdomains[] = { 1009 cpu_to_be32(4), 1010 cpu_to_be32(0), 1011 cpu_to_be32(0), 1012 cpu_to_be32(0), 1013 cpu_to_be32(nb_numa_nodes ? nb_numa_nodes - 1 : 0), 1014 }; 1015 1016 _FDT(rtas = fdt_add_subnode(fdt, 0, "rtas")); 1017 1018 /* hypertas */ 1019 add_str(hypertas, "hcall-pft"); 1020 add_str(hypertas, "hcall-term"); 1021 add_str(hypertas, "hcall-dabr"); 1022 add_str(hypertas, "hcall-interrupt"); 1023 add_str(hypertas, "hcall-tce"); 1024 add_str(hypertas, "hcall-vio"); 1025 add_str(hypertas, "hcall-splpar"); 1026 add_str(hypertas, "hcall-bulk"); 1027 add_str(hypertas, "hcall-set-mode"); 1028 add_str(hypertas, "hcall-sprg0"); 1029 add_str(hypertas, "hcall-copy"); 1030 add_str(hypertas, "hcall-debug"); 1031 add_str(qemu_hypertas, "hcall-memop1"); 1032 1033 if (!kvm_enabled() || kvmppc_spapr_use_multitce()) { 1034 add_str(hypertas, "hcall-multi-tce"); 1035 } 1036 1037 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 1038 add_str(hypertas, "hcall-hpt-resize"); 1039 } 1040 1041 _FDT(fdt_setprop(fdt, rtas, "ibm,hypertas-functions", 1042 hypertas->str, hypertas->len)); 1043 g_string_free(hypertas, TRUE); 1044 _FDT(fdt_setprop(fdt, rtas, "qemu,hypertas-functions", 1045 qemu_hypertas->str, qemu_hypertas->len)); 1046 g_string_free(qemu_hypertas, TRUE); 1047 1048 _FDT(fdt_setprop(fdt, rtas, "ibm,associativity-reference-points", 1049 refpoints, sizeof(refpoints))); 1050 1051 _FDT(fdt_setprop(fdt, rtas, "ibm,max-associativity-domains", 1052 maxdomains, sizeof(maxdomains))); 1053 1054 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max", 1055 RTAS_ERROR_LOG_MAX)); 1056 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate", 1057 RTAS_EVENT_SCAN_RATE)); 1058 1059 g_assert(msi_nonbroken); 1060 _FDT(fdt_setprop(fdt, rtas, "ibm,change-msix-capable", NULL, 0)); 1061 1062 /* 1063 * According to PAPR, rtas ibm,os-term does not guarantee a return 1064 * back to the guest cpu. 1065 * 1066 * While an additional ibm,extended-os-term property indicates 1067 * that rtas call return will always occur. Set this property. 1068 */ 1069 _FDT(fdt_setprop(fdt, rtas, "ibm,extended-os-term", NULL, 0)); 1070 1071 _FDT(fdt_setprop(fdt, rtas, "ibm,lrdr-capacity", 1072 lrdr_capacity, sizeof(lrdr_capacity))); 1073 1074 spapr_dt_rtas_tokens(fdt, rtas); 1075 } 1076 1077 /* Prepare ibm,arch-vec-5-platform-support, which indicates the MMU features 1078 * that the guest may request and thus the valid values for bytes 24..26 of 1079 * option vector 5: */ 1080 static void spapr_dt_ov5_platform_support(void *fdt, int chosen) 1081 { 1082 PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu); 1083 1084 char val[2 * 4] = { 1085 23, 0x00, /* Xive mode, filled in below. */ 1086 24, 0x00, /* Hash/Radix, filled in below. */ 1087 25, 0x00, /* Hash options: Segment Tables == no, GTSE == no. */ 1088 26, 0x40, /* Radix options: GTSE == yes. */ 1089 }; 1090 1091 if (!ppc_check_compat(first_ppc_cpu, CPU_POWERPC_LOGICAL_3_00, 0, 1092 first_ppc_cpu->compat_pvr)) { 1093 /* If we're in a pre POWER9 compat mode then the guest should do hash */ 1094 val[3] = 0x00; /* Hash */ 1095 } else if (kvm_enabled()) { 1096 if (kvmppc_has_cap_mmu_radix() && kvmppc_has_cap_mmu_hash_v3()) { 1097 val[3] = 0x80; /* OV5_MMU_BOTH */ 1098 } else if (kvmppc_has_cap_mmu_radix()) { 1099 val[3] = 0x40; /* OV5_MMU_RADIX_300 */ 1100 } else { 1101 val[3] = 0x00; /* Hash */ 1102 } 1103 } else { 1104 /* V3 MMU supports both hash and radix in tcg (with dynamic switching) */ 1105 val[3] = 0xC0; 1106 } 1107 _FDT(fdt_setprop(fdt, chosen, "ibm,arch-vec-5-platform-support", 1108 val, sizeof(val))); 1109 } 1110 1111 static void spapr_dt_chosen(sPAPRMachineState *spapr, void *fdt) 1112 { 1113 MachineState *machine = MACHINE(spapr); 1114 int chosen; 1115 const char *boot_device = machine->boot_order; 1116 char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus); 1117 size_t cb = 0; 1118 char *bootlist = get_boot_devices_list(&cb); 1119 1120 _FDT(chosen = fdt_add_subnode(fdt, 0, "chosen")); 1121 1122 _FDT(fdt_setprop_string(fdt, chosen, "bootargs", machine->kernel_cmdline)); 1123 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start", 1124 spapr->initrd_base)); 1125 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end", 1126 spapr->initrd_base + spapr->initrd_size)); 1127 1128 if (spapr->kernel_size) { 1129 uint64_t kprop[2] = { cpu_to_be64(KERNEL_LOAD_ADDR), 1130 cpu_to_be64(spapr->kernel_size) }; 1131 1132 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel", 1133 &kprop, sizeof(kprop))); 1134 if (spapr->kernel_le) { 1135 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0)); 1136 } 1137 } 1138 if (boot_menu) { 1139 _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu))); 1140 } 1141 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width)); 1142 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height)); 1143 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth)); 1144 1145 if (cb && bootlist) { 1146 int i; 1147 1148 for (i = 0; i < cb; i++) { 1149 if (bootlist[i] == '\n') { 1150 bootlist[i] = ' '; 1151 } 1152 } 1153 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist)); 1154 } 1155 1156 if (boot_device && strlen(boot_device)) { 1157 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device)); 1158 } 1159 1160 if (!spapr->has_graphics && stdout_path) { 1161 /* 1162 * "linux,stdout-path" and "stdout" properties are deprecated by linux 1163 * kernel. New platforms should only use the "stdout-path" property. Set 1164 * the new property and continue using older property to remain 1165 * compatible with the existing firmware. 1166 */ 1167 _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path)); 1168 _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path)); 1169 } 1170 1171 spapr_dt_ov5_platform_support(fdt, chosen); 1172 1173 g_free(stdout_path); 1174 g_free(bootlist); 1175 } 1176 1177 static void spapr_dt_hypervisor(sPAPRMachineState *spapr, void *fdt) 1178 { 1179 /* The /hypervisor node isn't in PAPR - this is a hack to allow PR 1180 * KVM to work under pHyp with some guest co-operation */ 1181 int hypervisor; 1182 uint8_t hypercall[16]; 1183 1184 _FDT(hypervisor = fdt_add_subnode(fdt, 0, "hypervisor")); 1185 /* indicate KVM hypercall interface */ 1186 _FDT(fdt_setprop_string(fdt, hypervisor, "compatible", "linux,kvm")); 1187 if (kvmppc_has_cap_fixup_hcalls()) { 1188 /* 1189 * Older KVM versions with older guest kernels were broken 1190 * with the magic page, don't allow the guest to map it. 1191 */ 1192 if (!kvmppc_get_hypercall(first_cpu->env_ptr, hypercall, 1193 sizeof(hypercall))) { 1194 _FDT(fdt_setprop(fdt, hypervisor, "hcall-instructions", 1195 hypercall, sizeof(hypercall))); 1196 } 1197 } 1198 } 1199 1200 static void *spapr_build_fdt(sPAPRMachineState *spapr, 1201 hwaddr rtas_addr, 1202 hwaddr rtas_size) 1203 { 1204 MachineState *machine = MACHINE(spapr); 1205 MachineClass *mc = MACHINE_GET_CLASS(machine); 1206 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1207 int ret; 1208 void *fdt; 1209 sPAPRPHBState *phb; 1210 char *buf; 1211 1212 fdt = g_malloc0(FDT_MAX_SIZE); 1213 _FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE))); 1214 1215 /* Root node */ 1216 _FDT(fdt_setprop_string(fdt, 0, "device_type", "chrp")); 1217 _FDT(fdt_setprop_string(fdt, 0, "model", "IBM pSeries (emulated by qemu)")); 1218 _FDT(fdt_setprop_string(fdt, 0, "compatible", "qemu,pseries")); 1219 1220 /* 1221 * Add info to guest to indentify which host is it being run on 1222 * and what is the uuid of the guest 1223 */ 1224 if (kvmppc_get_host_model(&buf)) { 1225 _FDT(fdt_setprop_string(fdt, 0, "host-model", buf)); 1226 g_free(buf); 1227 } 1228 if (kvmppc_get_host_serial(&buf)) { 1229 _FDT(fdt_setprop_string(fdt, 0, "host-serial", buf)); 1230 g_free(buf); 1231 } 1232 1233 buf = qemu_uuid_unparse_strdup(&qemu_uuid); 1234 1235 _FDT(fdt_setprop_string(fdt, 0, "vm,uuid", buf)); 1236 if (qemu_uuid_set) { 1237 _FDT(fdt_setprop_string(fdt, 0, "system-id", buf)); 1238 } 1239 g_free(buf); 1240 1241 if (qemu_get_vm_name()) { 1242 _FDT(fdt_setprop_string(fdt, 0, "ibm,partition-name", 1243 qemu_get_vm_name())); 1244 } 1245 1246 _FDT(fdt_setprop_cell(fdt, 0, "#address-cells", 2)); 1247 _FDT(fdt_setprop_cell(fdt, 0, "#size-cells", 2)); 1248 1249 /* /interrupt controller */ 1250 spapr_dt_xics(xics_max_server_number(spapr), fdt, PHANDLE_XICP); 1251 1252 ret = spapr_populate_memory(spapr, fdt); 1253 if (ret < 0) { 1254 error_report("couldn't setup memory nodes in fdt"); 1255 exit(1); 1256 } 1257 1258 /* /vdevice */ 1259 spapr_dt_vdevice(spapr->vio_bus, fdt); 1260 1261 if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) { 1262 ret = spapr_rng_populate_dt(fdt); 1263 if (ret < 0) { 1264 error_report("could not set up rng device in the fdt"); 1265 exit(1); 1266 } 1267 } 1268 1269 QLIST_FOREACH(phb, &spapr->phbs, list) { 1270 ret = spapr_populate_pci_dt(phb, PHANDLE_XICP, fdt); 1271 if (ret < 0) { 1272 error_report("couldn't setup PCI devices in fdt"); 1273 exit(1); 1274 } 1275 } 1276 1277 /* cpus */ 1278 spapr_populate_cpus_dt_node(fdt, spapr); 1279 1280 if (smc->dr_lmb_enabled) { 1281 _FDT(spapr_drc_populate_dt(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB)); 1282 } 1283 1284 if (mc->has_hotpluggable_cpus) { 1285 int offset = fdt_path_offset(fdt, "/cpus"); 1286 ret = spapr_drc_populate_dt(fdt, offset, NULL, 1287 SPAPR_DR_CONNECTOR_TYPE_CPU); 1288 if (ret < 0) { 1289 error_report("Couldn't set up CPU DR device tree properties"); 1290 exit(1); 1291 } 1292 } 1293 1294 /* /event-sources */ 1295 spapr_dt_events(spapr, fdt); 1296 1297 /* /rtas */ 1298 spapr_dt_rtas(spapr, fdt); 1299 1300 /* /chosen */ 1301 spapr_dt_chosen(spapr, fdt); 1302 1303 /* /hypervisor */ 1304 if (kvm_enabled()) { 1305 spapr_dt_hypervisor(spapr, fdt); 1306 } 1307 1308 /* Build memory reserve map */ 1309 if (spapr->kernel_size) { 1310 _FDT((fdt_add_mem_rsv(fdt, KERNEL_LOAD_ADDR, spapr->kernel_size))); 1311 } 1312 if (spapr->initrd_size) { 1313 _FDT((fdt_add_mem_rsv(fdt, spapr->initrd_base, spapr->initrd_size))); 1314 } 1315 1316 /* ibm,client-architecture-support updates */ 1317 ret = spapr_dt_cas_updates(spapr, fdt, spapr->ov5_cas); 1318 if (ret < 0) { 1319 error_report("couldn't setup CAS properties fdt"); 1320 exit(1); 1321 } 1322 1323 return fdt; 1324 } 1325 1326 static uint64_t translate_kernel_address(void *opaque, uint64_t addr) 1327 { 1328 return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR; 1329 } 1330 1331 static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp, 1332 PowerPCCPU *cpu) 1333 { 1334 CPUPPCState *env = &cpu->env; 1335 1336 /* The TCG path should also be holding the BQL at this point */ 1337 g_assert(qemu_mutex_iothread_locked()); 1338 1339 if (msr_pr) { 1340 hcall_dprintf("Hypercall made with MSR[PR]=1\n"); 1341 env->gpr[3] = H_PRIVILEGE; 1342 } else { 1343 env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]); 1344 } 1345 } 1346 1347 static uint64_t spapr_get_patbe(PPCVirtualHypervisor *vhyp) 1348 { 1349 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1350 1351 return spapr->patb_entry; 1352 } 1353 1354 #define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2)) 1355 #define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID) 1356 #define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY) 1357 #define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY)) 1358 #define DIRTY_HPTE(_hpte) ((*(uint64_t *)(_hpte)) |= tswap64(HPTE64_V_HPTE_DIRTY)) 1359 1360 /* 1361 * Get the fd to access the kernel htab, re-opening it if necessary 1362 */ 1363 static int get_htab_fd(sPAPRMachineState *spapr) 1364 { 1365 Error *local_err = NULL; 1366 1367 if (spapr->htab_fd >= 0) { 1368 return spapr->htab_fd; 1369 } 1370 1371 spapr->htab_fd = kvmppc_get_htab_fd(false, 0, &local_err); 1372 if (spapr->htab_fd < 0) { 1373 error_report_err(local_err); 1374 } 1375 1376 return spapr->htab_fd; 1377 } 1378 1379 void close_htab_fd(sPAPRMachineState *spapr) 1380 { 1381 if (spapr->htab_fd >= 0) { 1382 close(spapr->htab_fd); 1383 } 1384 spapr->htab_fd = -1; 1385 } 1386 1387 static hwaddr spapr_hpt_mask(PPCVirtualHypervisor *vhyp) 1388 { 1389 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1390 1391 return HTAB_SIZE(spapr) / HASH_PTEG_SIZE_64 - 1; 1392 } 1393 1394 static target_ulong spapr_encode_hpt_for_kvm_pr(PPCVirtualHypervisor *vhyp) 1395 { 1396 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1397 1398 assert(kvm_enabled()); 1399 1400 if (!spapr->htab) { 1401 return 0; 1402 } 1403 1404 return (target_ulong)(uintptr_t)spapr->htab | (spapr->htab_shift - 18); 1405 } 1406 1407 static const ppc_hash_pte64_t *spapr_map_hptes(PPCVirtualHypervisor *vhyp, 1408 hwaddr ptex, int n) 1409 { 1410 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1411 hwaddr pte_offset = ptex * HASH_PTE_SIZE_64; 1412 1413 if (!spapr->htab) { 1414 /* 1415 * HTAB is controlled by KVM. Fetch into temporary buffer 1416 */ 1417 ppc_hash_pte64_t *hptes = g_malloc(n * HASH_PTE_SIZE_64); 1418 kvmppc_read_hptes(hptes, ptex, n); 1419 return hptes; 1420 } 1421 1422 /* 1423 * HTAB is controlled by QEMU. Just point to the internally 1424 * accessible PTEG. 1425 */ 1426 return (const ppc_hash_pte64_t *)(spapr->htab + pte_offset); 1427 } 1428 1429 static void spapr_unmap_hptes(PPCVirtualHypervisor *vhyp, 1430 const ppc_hash_pte64_t *hptes, 1431 hwaddr ptex, int n) 1432 { 1433 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1434 1435 if (!spapr->htab) { 1436 g_free((void *)hptes); 1437 } 1438 1439 /* Nothing to do for qemu managed HPT */ 1440 } 1441 1442 static void spapr_store_hpte(PPCVirtualHypervisor *vhyp, hwaddr ptex, 1443 uint64_t pte0, uint64_t pte1) 1444 { 1445 sPAPRMachineState *spapr = SPAPR_MACHINE(vhyp); 1446 hwaddr offset = ptex * HASH_PTE_SIZE_64; 1447 1448 if (!spapr->htab) { 1449 kvmppc_write_hpte(ptex, pte0, pte1); 1450 } else { 1451 stq_p(spapr->htab + offset, pte0); 1452 stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); 1453 } 1454 } 1455 1456 int spapr_hpt_shift_for_ramsize(uint64_t ramsize) 1457 { 1458 int shift; 1459 1460 /* We aim for a hash table of size 1/128 the size of RAM (rounded 1461 * up). The PAPR recommendation is actually 1/64 of RAM size, but 1462 * that's much more than is needed for Linux guests */ 1463 shift = ctz64(pow2ceil(ramsize)) - 7; 1464 shift = MAX(shift, 18); /* Minimum architected size */ 1465 shift = MIN(shift, 46); /* Maximum architected size */ 1466 return shift; 1467 } 1468 1469 void spapr_free_hpt(sPAPRMachineState *spapr) 1470 { 1471 g_free(spapr->htab); 1472 spapr->htab = NULL; 1473 spapr->htab_shift = 0; 1474 close_htab_fd(spapr); 1475 } 1476 1477 void spapr_reallocate_hpt(sPAPRMachineState *spapr, int shift, 1478 Error **errp) 1479 { 1480 long rc; 1481 1482 /* Clean up any HPT info from a previous boot */ 1483 spapr_free_hpt(spapr); 1484 1485 rc = kvmppc_reset_htab(shift); 1486 if (rc < 0) { 1487 /* kernel-side HPT needed, but couldn't allocate one */ 1488 error_setg_errno(errp, errno, 1489 "Failed to allocate KVM HPT of order %d (try smaller maxmem?)", 1490 shift); 1491 /* This is almost certainly fatal, but if the caller really 1492 * wants to carry on with shift == 0, it's welcome to try */ 1493 } else if (rc > 0) { 1494 /* kernel-side HPT allocated */ 1495 if (rc != shift) { 1496 error_setg(errp, 1497 "Requested order %d HPT, but kernel allocated order %ld (try smaller maxmem?)", 1498 shift, rc); 1499 } 1500 1501 spapr->htab_shift = shift; 1502 spapr->htab = NULL; 1503 } else { 1504 /* kernel-side HPT not needed, allocate in userspace instead */ 1505 size_t size = 1ULL << shift; 1506 int i; 1507 1508 spapr->htab = qemu_memalign(size, size); 1509 if (!spapr->htab) { 1510 error_setg_errno(errp, errno, 1511 "Could not allocate HPT of order %d", shift); 1512 return; 1513 } 1514 1515 memset(spapr->htab, 0, size); 1516 spapr->htab_shift = shift; 1517 1518 for (i = 0; i < size / HASH_PTE_SIZE_64; i++) { 1519 DIRTY_HPTE(HPTE(spapr->htab, i)); 1520 } 1521 } 1522 /* We're setting up a hash table, so that means we're not radix */ 1523 spapr->patb_entry = 0; 1524 } 1525 1526 void spapr_setup_hpt_and_vrma(sPAPRMachineState *spapr) 1527 { 1528 int hpt_shift; 1529 1530 if ((spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) 1531 || (spapr->cas_reboot 1532 && !spapr_ovec_test(spapr->ov5_cas, OV5_HPT_RESIZE))) { 1533 hpt_shift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); 1534 } else { 1535 uint64_t current_ram_size; 1536 1537 current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); 1538 hpt_shift = spapr_hpt_shift_for_ramsize(current_ram_size); 1539 } 1540 spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal); 1541 1542 if (spapr->vrma_adjust) { 1543 spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)), 1544 spapr->htab_shift); 1545 } 1546 } 1547 1548 static int spapr_reset_drcs(Object *child, void *opaque) 1549 { 1550 sPAPRDRConnector *drc = 1551 (sPAPRDRConnector *) object_dynamic_cast(child, 1552 TYPE_SPAPR_DR_CONNECTOR); 1553 1554 if (drc) { 1555 spapr_drc_reset(drc); 1556 } 1557 1558 return 0; 1559 } 1560 1561 static void spapr_machine_reset(void) 1562 { 1563 MachineState *machine = MACHINE(qdev_get_machine()); 1564 sPAPRMachineState *spapr = SPAPR_MACHINE(machine); 1565 PowerPCCPU *first_ppc_cpu; 1566 uint32_t rtas_limit; 1567 hwaddr rtas_addr, fdt_addr; 1568 void *fdt; 1569 int rc; 1570 1571 spapr_caps_apply(spapr); 1572 1573 first_ppc_cpu = POWERPC_CPU(first_cpu); 1574 if (kvm_enabled() && kvmppc_has_cap_mmu_radix() && 1575 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 1576 spapr->max_compat_pvr)) { 1577 /* If using KVM with radix mode available, VCPUs can be started 1578 * without a HPT because KVM will start them in radix mode. 1579 * Set the GR bit in PATB so that we know there is no HPT. */ 1580 spapr->patb_entry = PATBE1_GR; 1581 } else { 1582 spapr_setup_hpt_and_vrma(spapr); 1583 } 1584 1585 /* if this reset wasn't generated by CAS, we should reset our 1586 * negotiated options and start from scratch */ 1587 if (!spapr->cas_reboot) { 1588 spapr_ovec_cleanup(spapr->ov5_cas); 1589 spapr->ov5_cas = spapr_ovec_new(); 1590 1591 ppc_set_compat(first_ppc_cpu, spapr->max_compat_pvr, &error_fatal); 1592 } 1593 1594 if (!SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1595 spapr_irq_msi_reset(spapr); 1596 } 1597 1598 qemu_devices_reset(); 1599 1600 /* DRC reset may cause a device to be unplugged. This will cause troubles 1601 * if this device is used by another device (eg, a running vhost backend 1602 * will crash QEMU if the DIMM holding the vring goes away). To avoid such 1603 * situations, we reset DRCs after all devices have been reset. 1604 */ 1605 object_child_foreach_recursive(object_get_root(), spapr_reset_drcs, NULL); 1606 1607 spapr_clear_pending_events(spapr); 1608 1609 /* 1610 * We place the device tree and RTAS just below either the top of the RMA, 1611 * or just below 2GB, whichever is lowere, so that it can be 1612 * processed with 32-bit real mode code if necessary 1613 */ 1614 rtas_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR); 1615 rtas_addr = rtas_limit - RTAS_MAX_SIZE; 1616 fdt_addr = rtas_addr - FDT_MAX_SIZE; 1617 1618 fdt = spapr_build_fdt(spapr, rtas_addr, spapr->rtas_size); 1619 1620 spapr_load_rtas(spapr, fdt, rtas_addr); 1621 1622 rc = fdt_pack(fdt); 1623 1624 /* Should only fail if we've built a corrupted tree */ 1625 assert(rc == 0); 1626 1627 if (fdt_totalsize(fdt) > FDT_MAX_SIZE) { 1628 error_report("FDT too big ! 0x%x bytes (max is 0x%x)", 1629 fdt_totalsize(fdt), FDT_MAX_SIZE); 1630 exit(1); 1631 } 1632 1633 /* Load the fdt */ 1634 qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); 1635 cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); 1636 g_free(fdt); 1637 1638 /* Set up the entry state */ 1639 spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, fdt_addr); 1640 first_ppc_cpu->env.gpr[5] = 0; 1641 1642 spapr->cas_reboot = false; 1643 } 1644 1645 static void spapr_create_nvram(sPAPRMachineState *spapr) 1646 { 1647 DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram"); 1648 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 1649 1650 if (dinfo) { 1651 qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo), 1652 &error_fatal); 1653 } 1654 1655 qdev_init_nofail(dev); 1656 1657 spapr->nvram = (struct sPAPRNVRAM *)dev; 1658 } 1659 1660 static void spapr_rtc_create(sPAPRMachineState *spapr) 1661 { 1662 object_initialize(&spapr->rtc, sizeof(spapr->rtc), TYPE_SPAPR_RTC); 1663 object_property_add_child(OBJECT(spapr), "rtc", OBJECT(&spapr->rtc), 1664 &error_fatal); 1665 object_property_set_bool(OBJECT(&spapr->rtc), true, "realized", 1666 &error_fatal); 1667 object_property_add_alias(OBJECT(spapr), "rtc-time", OBJECT(&spapr->rtc), 1668 "date", &error_fatal); 1669 } 1670 1671 /* Returns whether we want to use VGA or not */ 1672 static bool spapr_vga_init(PCIBus *pci_bus, Error **errp) 1673 { 1674 switch (vga_interface_type) { 1675 case VGA_NONE: 1676 return false; 1677 case VGA_DEVICE: 1678 return true; 1679 case VGA_STD: 1680 case VGA_VIRTIO: 1681 return pci_vga_init(pci_bus) != NULL; 1682 default: 1683 error_setg(errp, 1684 "Unsupported VGA mode, only -vga std or -vga virtio is supported"); 1685 return false; 1686 } 1687 } 1688 1689 static int spapr_pre_load(void *opaque) 1690 { 1691 int rc; 1692 1693 rc = spapr_caps_pre_load(opaque); 1694 if (rc) { 1695 return rc; 1696 } 1697 1698 return 0; 1699 } 1700 1701 static int spapr_post_load(void *opaque, int version_id) 1702 { 1703 sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; 1704 int err = 0; 1705 1706 err = spapr_caps_post_migration(spapr); 1707 if (err) { 1708 return err; 1709 } 1710 1711 if (!object_dynamic_cast(OBJECT(spapr->ics), TYPE_ICS_KVM)) { 1712 CPUState *cs; 1713 CPU_FOREACH(cs) { 1714 PowerPCCPU *cpu = POWERPC_CPU(cs); 1715 icp_resend(ICP(cpu->intc)); 1716 } 1717 } 1718 1719 /* In earlier versions, there was no separate qdev for the PAPR 1720 * RTC, so the RTC offset was stored directly in sPAPREnvironment. 1721 * So when migrating from those versions, poke the incoming offset 1722 * value into the RTC device */ 1723 if (version_id < 3) { 1724 err = spapr_rtc_import_offset(&spapr->rtc, spapr->rtc_offset); 1725 } 1726 1727 if (kvm_enabled() && spapr->patb_entry) { 1728 PowerPCCPU *cpu = POWERPC_CPU(first_cpu); 1729 bool radix = !!(spapr->patb_entry & PATBE1_GR); 1730 bool gtse = !!(cpu->env.spr[SPR_LPCR] & LPCR_GTSE); 1731 1732 err = kvmppc_configure_v3_mmu(cpu, radix, gtse, spapr->patb_entry); 1733 if (err) { 1734 error_report("Process table config unsupported by the host"); 1735 return -EINVAL; 1736 } 1737 } 1738 1739 return err; 1740 } 1741 1742 static int spapr_pre_save(void *opaque) 1743 { 1744 int rc; 1745 1746 rc = spapr_caps_pre_save(opaque); 1747 if (rc) { 1748 return rc; 1749 } 1750 1751 return 0; 1752 } 1753 1754 static bool version_before_3(void *opaque, int version_id) 1755 { 1756 return version_id < 3; 1757 } 1758 1759 static bool spapr_pending_events_needed(void *opaque) 1760 { 1761 sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; 1762 return !QTAILQ_EMPTY(&spapr->pending_events); 1763 } 1764 1765 static const VMStateDescription vmstate_spapr_event_entry = { 1766 .name = "spapr_event_log_entry", 1767 .version_id = 1, 1768 .minimum_version_id = 1, 1769 .fields = (VMStateField[]) { 1770 VMSTATE_UINT32(summary, sPAPREventLogEntry), 1771 VMSTATE_UINT32(extended_length, sPAPREventLogEntry), 1772 VMSTATE_VBUFFER_ALLOC_UINT32(extended_log, sPAPREventLogEntry, 0, 1773 NULL, extended_length), 1774 VMSTATE_END_OF_LIST() 1775 }, 1776 }; 1777 1778 static const VMStateDescription vmstate_spapr_pending_events = { 1779 .name = "spapr_pending_events", 1780 .version_id = 1, 1781 .minimum_version_id = 1, 1782 .needed = spapr_pending_events_needed, 1783 .fields = (VMStateField[]) { 1784 VMSTATE_QTAILQ_V(pending_events, sPAPRMachineState, 1, 1785 vmstate_spapr_event_entry, sPAPREventLogEntry, next), 1786 VMSTATE_END_OF_LIST() 1787 }, 1788 }; 1789 1790 static bool spapr_ov5_cas_needed(void *opaque) 1791 { 1792 sPAPRMachineState *spapr = opaque; 1793 sPAPROptionVector *ov5_mask = spapr_ovec_new(); 1794 sPAPROptionVector *ov5_legacy = spapr_ovec_new(); 1795 sPAPROptionVector *ov5_removed = spapr_ovec_new(); 1796 bool cas_needed; 1797 1798 /* Prior to the introduction of sPAPROptionVector, we had two option 1799 * vectors we dealt with: OV5_FORM1_AFFINITY, and OV5_DRCONF_MEMORY. 1800 * Both of these options encode machine topology into the device-tree 1801 * in such a way that the now-booted OS should still be able to interact 1802 * appropriately with QEMU regardless of what options were actually 1803 * negotiatied on the source side. 1804 * 1805 * As such, we can avoid migrating the CAS-negotiated options if these 1806 * are the only options available on the current machine/platform. 1807 * Since these are the only options available for pseries-2.7 and 1808 * earlier, this allows us to maintain old->new/new->old migration 1809 * compatibility. 1810 * 1811 * For QEMU 2.8+, there are additional CAS-negotiatable options available 1812 * via default pseries-2.8 machines and explicit command-line parameters. 1813 * Some of these options, like OV5_HP_EVT, *do* require QEMU to be aware 1814 * of the actual CAS-negotiated values to continue working properly. For 1815 * example, availability of memory unplug depends on knowing whether 1816 * OV5_HP_EVT was negotiated via CAS. 1817 * 1818 * Thus, for any cases where the set of available CAS-negotiatable 1819 * options extends beyond OV5_FORM1_AFFINITY and OV5_DRCONF_MEMORY, we 1820 * include the CAS-negotiated options in the migration stream, unless 1821 * if they affect boot time behaviour only. 1822 */ 1823 spapr_ovec_set(ov5_mask, OV5_FORM1_AFFINITY); 1824 spapr_ovec_set(ov5_mask, OV5_DRCONF_MEMORY); 1825 spapr_ovec_set(ov5_mask, OV5_DRMEM_V2); 1826 1827 /* spapr_ovec_diff returns true if bits were removed. we avoid using 1828 * the mask itself since in the future it's possible "legacy" bits may be 1829 * removed via machine options, which could generate a false positive 1830 * that breaks migration. 1831 */ 1832 spapr_ovec_intersect(ov5_legacy, spapr->ov5, ov5_mask); 1833 cas_needed = spapr_ovec_diff(ov5_removed, spapr->ov5, ov5_legacy); 1834 1835 spapr_ovec_cleanup(ov5_mask); 1836 spapr_ovec_cleanup(ov5_legacy); 1837 spapr_ovec_cleanup(ov5_removed); 1838 1839 return cas_needed; 1840 } 1841 1842 static const VMStateDescription vmstate_spapr_ov5_cas = { 1843 .name = "spapr_option_vector_ov5_cas", 1844 .version_id = 1, 1845 .minimum_version_id = 1, 1846 .needed = spapr_ov5_cas_needed, 1847 .fields = (VMStateField[]) { 1848 VMSTATE_STRUCT_POINTER_V(ov5_cas, sPAPRMachineState, 1, 1849 vmstate_spapr_ovec, sPAPROptionVector), 1850 VMSTATE_END_OF_LIST() 1851 }, 1852 }; 1853 1854 static bool spapr_patb_entry_needed(void *opaque) 1855 { 1856 sPAPRMachineState *spapr = opaque; 1857 1858 return !!spapr->patb_entry; 1859 } 1860 1861 static const VMStateDescription vmstate_spapr_patb_entry = { 1862 .name = "spapr_patb_entry", 1863 .version_id = 1, 1864 .minimum_version_id = 1, 1865 .needed = spapr_patb_entry_needed, 1866 .fields = (VMStateField[]) { 1867 VMSTATE_UINT64(patb_entry, sPAPRMachineState), 1868 VMSTATE_END_OF_LIST() 1869 }, 1870 }; 1871 1872 static bool spapr_irq_map_needed(void *opaque) 1873 { 1874 sPAPRMachineState *spapr = opaque; 1875 1876 return spapr->irq_map && !bitmap_empty(spapr->irq_map, spapr->irq_map_nr); 1877 } 1878 1879 static const VMStateDescription vmstate_spapr_irq_map = { 1880 .name = "spapr_irq_map", 1881 .version_id = 1, 1882 .minimum_version_id = 1, 1883 .needed = spapr_irq_map_needed, 1884 .fields = (VMStateField[]) { 1885 VMSTATE_BITMAP(irq_map, sPAPRMachineState, 0, irq_map_nr), 1886 VMSTATE_END_OF_LIST() 1887 }, 1888 }; 1889 1890 static const VMStateDescription vmstate_spapr = { 1891 .name = "spapr", 1892 .version_id = 3, 1893 .minimum_version_id = 1, 1894 .pre_load = spapr_pre_load, 1895 .post_load = spapr_post_load, 1896 .pre_save = spapr_pre_save, 1897 .fields = (VMStateField[]) { 1898 /* used to be @next_irq */ 1899 VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), 1900 1901 /* RTC offset */ 1902 VMSTATE_UINT64_TEST(rtc_offset, sPAPRMachineState, version_before_3), 1903 1904 VMSTATE_PPC_TIMEBASE_V(tb, sPAPRMachineState, 2), 1905 VMSTATE_END_OF_LIST() 1906 }, 1907 .subsections = (const VMStateDescription*[]) { 1908 &vmstate_spapr_ov5_cas, 1909 &vmstate_spapr_patb_entry, 1910 &vmstate_spapr_pending_events, 1911 &vmstate_spapr_cap_htm, 1912 &vmstate_spapr_cap_vsx, 1913 &vmstate_spapr_cap_dfp, 1914 &vmstate_spapr_cap_cfpc, 1915 &vmstate_spapr_cap_sbbc, 1916 &vmstate_spapr_cap_ibs, 1917 &vmstate_spapr_irq_map, 1918 NULL 1919 } 1920 }; 1921 1922 static int htab_save_setup(QEMUFile *f, void *opaque) 1923 { 1924 sPAPRMachineState *spapr = opaque; 1925 1926 /* "Iteration" header */ 1927 if (!spapr->htab_shift) { 1928 qemu_put_be32(f, -1); 1929 } else { 1930 qemu_put_be32(f, spapr->htab_shift); 1931 } 1932 1933 if (spapr->htab) { 1934 spapr->htab_save_index = 0; 1935 spapr->htab_first_pass = true; 1936 } else { 1937 if (spapr->htab_shift) { 1938 assert(kvm_enabled()); 1939 } 1940 } 1941 1942 1943 return 0; 1944 } 1945 1946 static void htab_save_chunk(QEMUFile *f, sPAPRMachineState *spapr, 1947 int chunkstart, int n_valid, int n_invalid) 1948 { 1949 qemu_put_be32(f, chunkstart); 1950 qemu_put_be16(f, n_valid); 1951 qemu_put_be16(f, n_invalid); 1952 qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), 1953 HASH_PTE_SIZE_64 * n_valid); 1954 } 1955 1956 static void htab_save_end_marker(QEMUFile *f) 1957 { 1958 qemu_put_be32(f, 0); 1959 qemu_put_be16(f, 0); 1960 qemu_put_be16(f, 0); 1961 } 1962 1963 static void htab_save_first_pass(QEMUFile *f, sPAPRMachineState *spapr, 1964 int64_t max_ns) 1965 { 1966 bool has_timeout = max_ns != -1; 1967 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 1968 int index = spapr->htab_save_index; 1969 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 1970 1971 assert(spapr->htab_first_pass); 1972 1973 do { 1974 int chunkstart; 1975 1976 /* Consume invalid HPTEs */ 1977 while ((index < htabslots) 1978 && !HPTE_VALID(HPTE(spapr->htab, index))) { 1979 CLEAN_HPTE(HPTE(spapr->htab, index)); 1980 index++; 1981 } 1982 1983 /* Consume valid HPTEs */ 1984 chunkstart = index; 1985 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 1986 && HPTE_VALID(HPTE(spapr->htab, index))) { 1987 CLEAN_HPTE(HPTE(spapr->htab, index)); 1988 index++; 1989 } 1990 1991 if (index > chunkstart) { 1992 int n_valid = index - chunkstart; 1993 1994 htab_save_chunk(f, spapr, chunkstart, n_valid, 0); 1995 1996 if (has_timeout && 1997 (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 1998 break; 1999 } 2000 } 2001 } while ((index < htabslots) && !qemu_file_rate_limit(f)); 2002 2003 if (index >= htabslots) { 2004 assert(index == htabslots); 2005 index = 0; 2006 spapr->htab_first_pass = false; 2007 } 2008 spapr->htab_save_index = index; 2009 } 2010 2011 static int htab_save_later_pass(QEMUFile *f, sPAPRMachineState *spapr, 2012 int64_t max_ns) 2013 { 2014 bool final = max_ns < 0; 2015 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 2016 int examined = 0, sent = 0; 2017 int index = spapr->htab_save_index; 2018 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 2019 2020 assert(!spapr->htab_first_pass); 2021 2022 do { 2023 int chunkstart, invalidstart; 2024 2025 /* Consume non-dirty HPTEs */ 2026 while ((index < htabslots) 2027 && !HPTE_DIRTY(HPTE(spapr->htab, index))) { 2028 index++; 2029 examined++; 2030 } 2031 2032 chunkstart = index; 2033 /* Consume valid dirty HPTEs */ 2034 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 2035 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2036 && HPTE_VALID(HPTE(spapr->htab, index))) { 2037 CLEAN_HPTE(HPTE(spapr->htab, index)); 2038 index++; 2039 examined++; 2040 } 2041 2042 invalidstart = index; 2043 /* Consume invalid dirty HPTEs */ 2044 while ((index < htabslots) && (index - invalidstart < USHRT_MAX) 2045 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2046 && !HPTE_VALID(HPTE(spapr->htab, index))) { 2047 CLEAN_HPTE(HPTE(spapr->htab, index)); 2048 index++; 2049 examined++; 2050 } 2051 2052 if (index > chunkstart) { 2053 int n_valid = invalidstart - chunkstart; 2054 int n_invalid = index - invalidstart; 2055 2056 htab_save_chunk(f, spapr, chunkstart, n_valid, n_invalid); 2057 sent += index - chunkstart; 2058 2059 if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 2060 break; 2061 } 2062 } 2063 2064 if (examined >= htabslots) { 2065 break; 2066 } 2067 2068 if (index >= htabslots) { 2069 assert(index == htabslots); 2070 index = 0; 2071 } 2072 } while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final)); 2073 2074 if (index >= htabslots) { 2075 assert(index == htabslots); 2076 index = 0; 2077 } 2078 2079 spapr->htab_save_index = index; 2080 2081 return (examined >= htabslots) && (sent == 0) ? 1 : 0; 2082 } 2083 2084 #define MAX_ITERATION_NS 5000000 /* 5 ms */ 2085 #define MAX_KVM_BUF_SIZE 2048 2086 2087 static int htab_save_iterate(QEMUFile *f, void *opaque) 2088 { 2089 sPAPRMachineState *spapr = opaque; 2090 int fd; 2091 int rc = 0; 2092 2093 /* Iteration header */ 2094 if (!spapr->htab_shift) { 2095 qemu_put_be32(f, -1); 2096 return 1; 2097 } else { 2098 qemu_put_be32(f, 0); 2099 } 2100 2101 if (!spapr->htab) { 2102 assert(kvm_enabled()); 2103 2104 fd = get_htab_fd(spapr); 2105 if (fd < 0) { 2106 return fd; 2107 } 2108 2109 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, MAX_ITERATION_NS); 2110 if (rc < 0) { 2111 return rc; 2112 } 2113 } else if (spapr->htab_first_pass) { 2114 htab_save_first_pass(f, spapr, MAX_ITERATION_NS); 2115 } else { 2116 rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS); 2117 } 2118 2119 htab_save_end_marker(f); 2120 2121 return rc; 2122 } 2123 2124 static int htab_save_complete(QEMUFile *f, void *opaque) 2125 { 2126 sPAPRMachineState *spapr = opaque; 2127 int fd; 2128 2129 /* Iteration header */ 2130 if (!spapr->htab_shift) { 2131 qemu_put_be32(f, -1); 2132 return 0; 2133 } else { 2134 qemu_put_be32(f, 0); 2135 } 2136 2137 if (!spapr->htab) { 2138 int rc; 2139 2140 assert(kvm_enabled()); 2141 2142 fd = get_htab_fd(spapr); 2143 if (fd < 0) { 2144 return fd; 2145 } 2146 2147 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, -1); 2148 if (rc < 0) { 2149 return rc; 2150 } 2151 } else { 2152 if (spapr->htab_first_pass) { 2153 htab_save_first_pass(f, spapr, -1); 2154 } 2155 htab_save_later_pass(f, spapr, -1); 2156 } 2157 2158 /* End marker */ 2159 htab_save_end_marker(f); 2160 2161 return 0; 2162 } 2163 2164 static int htab_load(QEMUFile *f, void *opaque, int version_id) 2165 { 2166 sPAPRMachineState *spapr = opaque; 2167 uint32_t section_hdr; 2168 int fd = -1; 2169 Error *local_err = NULL; 2170 2171 if (version_id < 1 || version_id > 1) { 2172 error_report("htab_load() bad version"); 2173 return -EINVAL; 2174 } 2175 2176 section_hdr = qemu_get_be32(f); 2177 2178 if (section_hdr == -1) { 2179 spapr_free_hpt(spapr); 2180 return 0; 2181 } 2182 2183 if (section_hdr) { 2184 /* First section gives the htab size */ 2185 spapr_reallocate_hpt(spapr, section_hdr, &local_err); 2186 if (local_err) { 2187 error_report_err(local_err); 2188 return -EINVAL; 2189 } 2190 return 0; 2191 } 2192 2193 if (!spapr->htab) { 2194 assert(kvm_enabled()); 2195 2196 fd = kvmppc_get_htab_fd(true, 0, &local_err); 2197 if (fd < 0) { 2198 error_report_err(local_err); 2199 return fd; 2200 } 2201 } 2202 2203 while (true) { 2204 uint32_t index; 2205 uint16_t n_valid, n_invalid; 2206 2207 index = qemu_get_be32(f); 2208 n_valid = qemu_get_be16(f); 2209 n_invalid = qemu_get_be16(f); 2210 2211 if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { 2212 /* End of Stream */ 2213 break; 2214 } 2215 2216 if ((index + n_valid + n_invalid) > 2217 (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { 2218 /* Bad index in stream */ 2219 error_report( 2220 "htab_load() bad index %d (%hd+%hd entries) in htab stream (htab_shift=%d)", 2221 index, n_valid, n_invalid, spapr->htab_shift); 2222 return -EINVAL; 2223 } 2224 2225 if (spapr->htab) { 2226 if (n_valid) { 2227 qemu_get_buffer(f, HPTE(spapr->htab, index), 2228 HASH_PTE_SIZE_64 * n_valid); 2229 } 2230 if (n_invalid) { 2231 memset(HPTE(spapr->htab, index + n_valid), 0, 2232 HASH_PTE_SIZE_64 * n_invalid); 2233 } 2234 } else { 2235 int rc; 2236 2237 assert(fd >= 0); 2238 2239 rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); 2240 if (rc < 0) { 2241 return rc; 2242 } 2243 } 2244 } 2245 2246 if (!spapr->htab) { 2247 assert(fd >= 0); 2248 close(fd); 2249 } 2250 2251 return 0; 2252 } 2253 2254 static void htab_save_cleanup(void *opaque) 2255 { 2256 sPAPRMachineState *spapr = opaque; 2257 2258 close_htab_fd(spapr); 2259 } 2260 2261 static SaveVMHandlers savevm_htab_handlers = { 2262 .save_setup = htab_save_setup, 2263 .save_live_iterate = htab_save_iterate, 2264 .save_live_complete_precopy = htab_save_complete, 2265 .save_cleanup = htab_save_cleanup, 2266 .load_state = htab_load, 2267 }; 2268 2269 static void spapr_boot_set(void *opaque, const char *boot_device, 2270 Error **errp) 2271 { 2272 MachineState *machine = MACHINE(opaque); 2273 machine->boot_order = g_strdup(boot_device); 2274 } 2275 2276 static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr) 2277 { 2278 MachineState *machine = MACHINE(spapr); 2279 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 2280 uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; 2281 int i; 2282 2283 for (i = 0; i < nr_lmbs; i++) { 2284 uint64_t addr; 2285 2286 addr = i * lmb_size + machine->device_memory->base; 2287 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, 2288 addr / lmb_size); 2289 } 2290 } 2291 2292 /* 2293 * If RAM size, maxmem size and individual node mem sizes aren't aligned 2294 * to SPAPR_MEMORY_BLOCK_SIZE(256MB), then refuse to start the guest 2295 * since we can't support such unaligned sizes with DRCONF_MEMORY. 2296 */ 2297 static void spapr_validate_node_memory(MachineState *machine, Error **errp) 2298 { 2299 int i; 2300 2301 if (machine->ram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2302 error_setg(errp, "Memory size 0x" RAM_ADDR_FMT 2303 " is not aligned to %" PRIu64 " MiB", 2304 machine->ram_size, 2305 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2306 return; 2307 } 2308 2309 if (machine->maxram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2310 error_setg(errp, "Maximum memory size 0x" RAM_ADDR_FMT 2311 " is not aligned to %" PRIu64 " MiB", 2312 machine->ram_size, 2313 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2314 return; 2315 } 2316 2317 for (i = 0; i < nb_numa_nodes; i++) { 2318 if (numa_info[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) { 2319 error_setg(errp, 2320 "Node %d memory size 0x%" PRIx64 2321 " is not aligned to %" PRIu64 " MiB", 2322 i, numa_info[i].node_mem, 2323 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2324 return; 2325 } 2326 } 2327 } 2328 2329 /* find cpu slot in machine->possible_cpus by core_id */ 2330 static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int *idx) 2331 { 2332 int index = id / smp_threads; 2333 2334 if (index >= ms->possible_cpus->len) { 2335 return NULL; 2336 } 2337 if (idx) { 2338 *idx = index; 2339 } 2340 return &ms->possible_cpus->cpus[index]; 2341 } 2342 2343 static void spapr_set_vsmt_mode(sPAPRMachineState *spapr, Error **errp) 2344 { 2345 Error *local_err = NULL; 2346 bool vsmt_user = !!spapr->vsmt; 2347 int kvm_smt = kvmppc_smt_threads(); 2348 int ret; 2349 2350 if (!kvm_enabled() && (smp_threads > 1)) { 2351 error_setg(&local_err, "TCG cannot support more than 1 thread/core " 2352 "on a pseries machine"); 2353 goto out; 2354 } 2355 if (!is_power_of_2(smp_threads)) { 2356 error_setg(&local_err, "Cannot support %d threads/core on a pseries " 2357 "machine because it must be a power of 2", smp_threads); 2358 goto out; 2359 } 2360 2361 /* Detemine the VSMT mode to use: */ 2362 if (vsmt_user) { 2363 if (spapr->vsmt < smp_threads) { 2364 error_setg(&local_err, "Cannot support VSMT mode %d" 2365 " because it must be >= threads/core (%d)", 2366 spapr->vsmt, smp_threads); 2367 goto out; 2368 } 2369 /* In this case, spapr->vsmt has been set by the command line */ 2370 } else { 2371 /* 2372 * Default VSMT value is tricky, because we need it to be as 2373 * consistent as possible (for migration), but this requires 2374 * changing it for at least some existing cases. We pick 8 as 2375 * the value that we'd get with KVM on POWER8, the 2376 * overwhelmingly common case in production systems. 2377 */ 2378 spapr->vsmt = MAX(8, smp_threads); 2379 } 2380 2381 /* KVM: If necessary, set the SMT mode: */ 2382 if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { 2383 ret = kvmppc_set_smt_threads(spapr->vsmt); 2384 if (ret) { 2385 /* Looks like KVM isn't able to change VSMT mode */ 2386 error_setg(&local_err, 2387 "Failed to set KVM's VSMT mode to %d (errno %d)", 2388 spapr->vsmt, ret); 2389 /* We can live with that if the default one is big enough 2390 * for the number of threads, and a submultiple of the one 2391 * we want. In this case we'll waste some vcpu ids, but 2392 * behaviour will be correct */ 2393 if ((kvm_smt >= smp_threads) && ((spapr->vsmt % kvm_smt) == 0)) { 2394 warn_report_err(local_err); 2395 local_err = NULL; 2396 goto out; 2397 } else { 2398 if (!vsmt_user) { 2399 error_append_hint(&local_err, 2400 "On PPC, a VM with %d threads/core" 2401 " on a host with %d threads/core" 2402 " requires the use of VSMT mode %d.\n", 2403 smp_threads, kvm_smt, spapr->vsmt); 2404 } 2405 kvmppc_hint_smt_possible(&local_err); 2406 goto out; 2407 } 2408 } 2409 } 2410 /* else TCG: nothing to do currently */ 2411 out: 2412 error_propagate(errp, local_err); 2413 } 2414 2415 static void spapr_init_cpus(sPAPRMachineState *spapr) 2416 { 2417 MachineState *machine = MACHINE(spapr); 2418 MachineClass *mc = MACHINE_GET_CLASS(machine); 2419 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2420 const char *type = spapr_get_cpu_core_type(machine->cpu_type); 2421 const CPUArchIdList *possible_cpus; 2422 int boot_cores_nr = smp_cpus / smp_threads; 2423 int i; 2424 2425 possible_cpus = mc->possible_cpu_arch_ids(machine); 2426 if (mc->has_hotpluggable_cpus) { 2427 if (smp_cpus % smp_threads) { 2428 error_report("smp_cpus (%u) must be multiple of threads (%u)", 2429 smp_cpus, smp_threads); 2430 exit(1); 2431 } 2432 if (max_cpus % smp_threads) { 2433 error_report("max_cpus (%u) must be multiple of threads (%u)", 2434 max_cpus, smp_threads); 2435 exit(1); 2436 } 2437 } else { 2438 if (max_cpus != smp_cpus) { 2439 error_report("This machine version does not support CPU hotplug"); 2440 exit(1); 2441 } 2442 boot_cores_nr = possible_cpus->len; 2443 } 2444 2445 /* VSMT must be set in order to be able to compute VCPU ids, ie to 2446 * call xics_max_server_number() or spapr_vcpu_id(). 2447 */ 2448 spapr_set_vsmt_mode(spapr, &error_fatal); 2449 2450 if (smc->pre_2_10_has_unused_icps) { 2451 int i; 2452 2453 for (i = 0; i < xics_max_server_number(spapr); i++) { 2454 /* Dummy entries get deregistered when real ICPState objects 2455 * are registered during CPU core hotplug. 2456 */ 2457 pre_2_10_vmstate_register_dummy_icp(i); 2458 } 2459 } 2460 2461 for (i = 0; i < possible_cpus->len; i++) { 2462 int core_id = i * smp_threads; 2463 2464 if (mc->has_hotpluggable_cpus) { 2465 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, 2466 spapr_vcpu_id(spapr, core_id)); 2467 } 2468 2469 if (i < boot_cores_nr) { 2470 Object *core = object_new(type); 2471 int nr_threads = smp_threads; 2472 2473 /* Handle the partially filled core for older machine types */ 2474 if ((i + 1) * smp_threads >= smp_cpus) { 2475 nr_threads = smp_cpus - i * smp_threads; 2476 } 2477 2478 object_property_set_int(core, nr_threads, "nr-threads", 2479 &error_fatal); 2480 object_property_set_int(core, core_id, CPU_CORE_PROP_CORE_ID, 2481 &error_fatal); 2482 object_property_set_bool(core, true, "realized", &error_fatal); 2483 } 2484 } 2485 } 2486 2487 /* pSeries LPAR / sPAPR hardware init */ 2488 static void spapr_machine_init(MachineState *machine) 2489 { 2490 sPAPRMachineState *spapr = SPAPR_MACHINE(machine); 2491 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2492 const char *kernel_filename = machine->kernel_filename; 2493 const char *initrd_filename = machine->initrd_filename; 2494 PCIHostState *phb; 2495 int i; 2496 MemoryRegion *sysmem = get_system_memory(); 2497 MemoryRegion *ram = g_new(MemoryRegion, 1); 2498 hwaddr node0_size = spapr_node0_size(machine); 2499 long load_limit, fw_size; 2500 char *filename; 2501 Error *resize_hpt_err = NULL; 2502 2503 msi_nonbroken = true; 2504 2505 QLIST_INIT(&spapr->phbs); 2506 QTAILQ_INIT(&spapr->pending_dimm_unplugs); 2507 2508 /* Determine capabilities to run with */ 2509 spapr_caps_init(spapr); 2510 2511 kvmppc_check_papr_resize_hpt(&resize_hpt_err); 2512 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DEFAULT) { 2513 /* 2514 * If the user explicitly requested a mode we should either 2515 * supply it, or fail completely (which we do below). But if 2516 * it's not set explicitly, we reset our mode to something 2517 * that works 2518 */ 2519 if (resize_hpt_err) { 2520 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 2521 error_free(resize_hpt_err); 2522 resize_hpt_err = NULL; 2523 } else { 2524 spapr->resize_hpt = smc->resize_hpt_default; 2525 } 2526 } 2527 2528 assert(spapr->resize_hpt != SPAPR_RESIZE_HPT_DEFAULT); 2529 2530 if ((spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) && resize_hpt_err) { 2531 /* 2532 * User requested HPT resize, but this host can't supply it. Bail out 2533 */ 2534 error_report_err(resize_hpt_err); 2535 exit(1); 2536 } 2537 2538 spapr->rma_size = node0_size; 2539 2540 /* With KVM, we don't actually know whether KVM supports an 2541 * unbounded RMA (PR KVM) or is limited by the hash table size 2542 * (HV KVM using VRMA), so we always assume the latter 2543 * 2544 * In that case, we also limit the initial allocations for RTAS 2545 * etc... to 256M since we have no way to know what the VRMA size 2546 * is going to be as it depends on the size of the hash table 2547 * which isn't determined yet. 2548 */ 2549 if (kvm_enabled()) { 2550 spapr->vrma_adjust = 1; 2551 spapr->rma_size = MIN(spapr->rma_size, 0x10000000); 2552 } 2553 2554 /* Actually we don't support unbounded RMA anymore since we added 2555 * proper emulation of HV mode. The max we can get is 16G which 2556 * also happens to be what we configure for PAPR mode so make sure 2557 * we don't do anything bigger than that 2558 */ 2559 spapr->rma_size = MIN(spapr->rma_size, 0x400000000ull); 2560 2561 if (spapr->rma_size > node0_size) { 2562 error_report("Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")", 2563 spapr->rma_size); 2564 exit(1); 2565 } 2566 2567 /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ 2568 load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; 2569 2570 /* Set up Interrupt Controller before we create the VCPUs */ 2571 smc->irq->init(spapr, &error_fatal); 2572 2573 /* Set up containers for ibm,client-architecture-support negotiated options 2574 */ 2575 spapr->ov5 = spapr_ovec_new(); 2576 spapr->ov5_cas = spapr_ovec_new(); 2577 2578 if (smc->dr_lmb_enabled) { 2579 spapr_ovec_set(spapr->ov5, OV5_DRCONF_MEMORY); 2580 spapr_validate_node_memory(machine, &error_fatal); 2581 } 2582 2583 spapr_ovec_set(spapr->ov5, OV5_FORM1_AFFINITY); 2584 2585 /* advertise support for dedicated HP event source to guests */ 2586 if (spapr->use_hotplug_event_source) { 2587 spapr_ovec_set(spapr->ov5, OV5_HP_EVT); 2588 } 2589 2590 /* advertise support for HPT resizing */ 2591 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 2592 spapr_ovec_set(spapr->ov5, OV5_HPT_RESIZE); 2593 } 2594 2595 /* advertise support for ibm,dyamic-memory-v2 */ 2596 spapr_ovec_set(spapr->ov5, OV5_DRMEM_V2); 2597 2598 /* init CPUs */ 2599 spapr_init_cpus(spapr); 2600 2601 if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) && 2602 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 2603 spapr->max_compat_pvr)) { 2604 /* KVM and TCG always allow GTSE with radix... */ 2605 spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_GTSE); 2606 } 2607 /* ... but not with hash (currently). */ 2608 2609 if (kvm_enabled()) { 2610 /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ 2611 kvmppc_enable_logical_ci_hcalls(); 2612 kvmppc_enable_set_mode_hcall(); 2613 2614 /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ 2615 kvmppc_enable_clear_ref_mod_hcalls(); 2616 } 2617 2618 /* allocate RAM */ 2619 memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram", 2620 machine->ram_size); 2621 memory_region_add_subregion(sysmem, 0, ram); 2622 2623 /* always allocate the device memory information */ 2624 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 2625 2626 /* initialize hotplug memory address space */ 2627 if (machine->ram_size < machine->maxram_size) { 2628 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 2629 /* 2630 * Limit the number of hotpluggable memory slots to half the number 2631 * slots that KVM supports, leaving the other half for PCI and other 2632 * devices. However ensure that number of slots doesn't drop below 32. 2633 */ 2634 int max_memslots = kvm_enabled() ? kvm_get_max_memslots() / 2 : 2635 SPAPR_MAX_RAM_SLOTS; 2636 2637 if (max_memslots < SPAPR_MAX_RAM_SLOTS) { 2638 max_memslots = SPAPR_MAX_RAM_SLOTS; 2639 } 2640 if (machine->ram_slots > max_memslots) { 2641 error_report("Specified number of memory slots %" 2642 PRIu64" exceeds max supported %d", 2643 machine->ram_slots, max_memslots); 2644 exit(1); 2645 } 2646 2647 machine->device_memory->base = ROUND_UP(machine->ram_size, 2648 SPAPR_DEVICE_MEM_ALIGN); 2649 memory_region_init(&machine->device_memory->mr, OBJECT(spapr), 2650 "device-memory", device_mem_size); 2651 memory_region_add_subregion(sysmem, machine->device_memory->base, 2652 &machine->device_memory->mr); 2653 } 2654 2655 if (smc->dr_lmb_enabled) { 2656 spapr_create_lmb_dr_connectors(spapr); 2657 } 2658 2659 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin"); 2660 if (!filename) { 2661 error_report("Could not find LPAR rtas '%s'", "spapr-rtas.bin"); 2662 exit(1); 2663 } 2664 spapr->rtas_size = get_image_size(filename); 2665 if (spapr->rtas_size < 0) { 2666 error_report("Could not get size of LPAR rtas '%s'", filename); 2667 exit(1); 2668 } 2669 spapr->rtas_blob = g_malloc(spapr->rtas_size); 2670 if (load_image_size(filename, spapr->rtas_blob, spapr->rtas_size) < 0) { 2671 error_report("Could not load LPAR rtas '%s'", filename); 2672 exit(1); 2673 } 2674 if (spapr->rtas_size > RTAS_MAX_SIZE) { 2675 error_report("RTAS too big ! 0x%zx bytes (max is 0x%x)", 2676 (size_t)spapr->rtas_size, RTAS_MAX_SIZE); 2677 exit(1); 2678 } 2679 g_free(filename); 2680 2681 /* Set up RTAS event infrastructure */ 2682 spapr_events_init(spapr); 2683 2684 /* Set up the RTC RTAS interfaces */ 2685 spapr_rtc_create(spapr); 2686 2687 /* Set up VIO bus */ 2688 spapr->vio_bus = spapr_vio_bus_init(); 2689 2690 for (i = 0; i < serial_max_hds(); i++) { 2691 if (serial_hd(i)) { 2692 spapr_vty_create(spapr->vio_bus, serial_hd(i)); 2693 } 2694 } 2695 2696 /* We always have at least the nvram device on VIO */ 2697 spapr_create_nvram(spapr); 2698 2699 /* Set up PCI */ 2700 spapr_pci_rtas_init(); 2701 2702 phb = spapr_create_phb(spapr, 0); 2703 2704 for (i = 0; i < nb_nics; i++) { 2705 NICInfo *nd = &nd_table[i]; 2706 2707 if (!nd->model) { 2708 nd->model = g_strdup("spapr-vlan"); 2709 } 2710 2711 if (g_str_equal(nd->model, "spapr-vlan") || 2712 g_str_equal(nd->model, "ibmveth")) { 2713 spapr_vlan_create(spapr->vio_bus, nd); 2714 } else { 2715 pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); 2716 } 2717 } 2718 2719 for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { 2720 spapr_vscsi_create(spapr->vio_bus); 2721 } 2722 2723 /* Graphics */ 2724 if (spapr_vga_init(phb->bus, &error_fatal)) { 2725 spapr->has_graphics = true; 2726 machine->usb |= defaults_enabled() && !machine->usb_disabled; 2727 } 2728 2729 if (machine->usb) { 2730 if (smc->use_ohci_by_default) { 2731 pci_create_simple(phb->bus, -1, "pci-ohci"); 2732 } else { 2733 pci_create_simple(phb->bus, -1, "nec-usb-xhci"); 2734 } 2735 2736 if (spapr->has_graphics) { 2737 USBBus *usb_bus = usb_bus_find(-1); 2738 2739 usb_create_simple(usb_bus, "usb-kbd"); 2740 usb_create_simple(usb_bus, "usb-mouse"); 2741 } 2742 } 2743 2744 if (spapr->rma_size < (MIN_RMA_SLOF * MiB)) { 2745 error_report( 2746 "pSeries SLOF firmware requires >= %ldM guest RMA (Real Mode Area memory)", 2747 MIN_RMA_SLOF); 2748 exit(1); 2749 } 2750 2751 if (kernel_filename) { 2752 uint64_t lowaddr = 0; 2753 2754 spapr->kernel_size = load_elf(kernel_filename, translate_kernel_address, 2755 NULL, NULL, &lowaddr, NULL, 1, 2756 PPC_ELF_MACHINE, 0, 0); 2757 if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) { 2758 spapr->kernel_size = load_elf(kernel_filename, 2759 translate_kernel_address, NULL, NULL, 2760 &lowaddr, NULL, 0, PPC_ELF_MACHINE, 2761 0, 0); 2762 spapr->kernel_le = spapr->kernel_size > 0; 2763 } 2764 if (spapr->kernel_size < 0) { 2765 error_report("error loading %s: %s", kernel_filename, 2766 load_elf_strerror(spapr->kernel_size)); 2767 exit(1); 2768 } 2769 2770 /* load initrd */ 2771 if (initrd_filename) { 2772 /* Try to locate the initrd in the gap between the kernel 2773 * and the firmware. Add a bit of space just in case 2774 */ 2775 spapr->initrd_base = (KERNEL_LOAD_ADDR + spapr->kernel_size 2776 + 0x1ffff) & ~0xffff; 2777 spapr->initrd_size = load_image_targphys(initrd_filename, 2778 spapr->initrd_base, 2779 load_limit 2780 - spapr->initrd_base); 2781 if (spapr->initrd_size < 0) { 2782 error_report("could not load initial ram disk '%s'", 2783 initrd_filename); 2784 exit(1); 2785 } 2786 } 2787 } 2788 2789 if (bios_name == NULL) { 2790 bios_name = FW_FILE_NAME; 2791 } 2792 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 2793 if (!filename) { 2794 error_report("Could not find LPAR firmware '%s'", bios_name); 2795 exit(1); 2796 } 2797 fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); 2798 if (fw_size <= 0) { 2799 error_report("Could not load LPAR firmware '%s'", filename); 2800 exit(1); 2801 } 2802 g_free(filename); 2803 2804 /* FIXME: Should register things through the MachineState's qdev 2805 * interface, this is a legacy from the sPAPREnvironment structure 2806 * which predated MachineState but had a similar function */ 2807 vmstate_register(NULL, 0, &vmstate_spapr, spapr); 2808 register_savevm_live(NULL, "spapr/htab", -1, 1, 2809 &savevm_htab_handlers, spapr); 2810 2811 qemu_register_boot_set(spapr_boot_set, spapr); 2812 2813 if (kvm_enabled()) { 2814 /* to stop and start vmclock */ 2815 qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, 2816 &spapr->tb); 2817 2818 kvmppc_spapr_enable_inkernel_multitce(); 2819 } 2820 } 2821 2822 static int spapr_kvm_type(const char *vm_type) 2823 { 2824 if (!vm_type) { 2825 return 0; 2826 } 2827 2828 if (!strcmp(vm_type, "HV")) { 2829 return 1; 2830 } 2831 2832 if (!strcmp(vm_type, "PR")) { 2833 return 2; 2834 } 2835 2836 error_report("Unknown kvm-type specified '%s'", vm_type); 2837 exit(1); 2838 } 2839 2840 /* 2841 * Implementation of an interface to adjust firmware path 2842 * for the bootindex property handling. 2843 */ 2844 static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, 2845 DeviceState *dev) 2846 { 2847 #define CAST(type, obj, name) \ 2848 ((type *)object_dynamic_cast(OBJECT(obj), (name))) 2849 SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); 2850 sPAPRPHBState *phb = CAST(sPAPRPHBState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); 2851 VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON); 2852 2853 if (d) { 2854 void *spapr = CAST(void, bus->parent, "spapr-vscsi"); 2855 VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); 2856 USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); 2857 2858 if (spapr) { 2859 /* 2860 * Replace "channel@0/disk@0,0" with "disk@8000000000000000": 2861 * We use SRP luns of the form 8000 | (bus << 8) | (id << 5) | lun 2862 * in the top 16 bits of the 64-bit LUN 2863 */ 2864 unsigned id = 0x8000 | (d->id << 8) | d->lun; 2865 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 2866 (uint64_t)id << 48); 2867 } else if (virtio) { 2868 /* 2869 * We use SRP luns of the form 01000000 | (target << 8) | lun 2870 * in the top 32 bits of the 64-bit LUN 2871 * Note: the quote above is from SLOF and it is wrong, 2872 * the actual binding is: 2873 * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) 2874 */ 2875 unsigned id = 0x1000000 | (d->id << 16) | d->lun; 2876 if (d->lun >= 256) { 2877 /* Use the LUN "flat space addressing method" */ 2878 id |= 0x4000; 2879 } 2880 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 2881 (uint64_t)id << 32); 2882 } else if (usb) { 2883 /* 2884 * We use SRP luns of the form 01000000 | (usb-port << 16) | lun 2885 * in the top 32 bits of the 64-bit LUN 2886 */ 2887 unsigned usb_port = atoi(usb->port->path); 2888 unsigned id = 0x1000000 | (usb_port << 16) | d->lun; 2889 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 2890 (uint64_t)id << 32); 2891 } 2892 } 2893 2894 /* 2895 * SLOF probes the USB devices, and if it recognizes that the device is a 2896 * storage device, it changes its name to "storage" instead of "usb-host", 2897 * and additionally adds a child node for the SCSI LUN, so the correct 2898 * boot path in SLOF is something like .../storage@1/disk@xxx" instead. 2899 */ 2900 if (strcmp("usb-host", qdev_fw_name(dev)) == 0) { 2901 USBDevice *usbdev = CAST(USBDevice, dev, TYPE_USB_DEVICE); 2902 if (usb_host_dev_is_scsi_storage(usbdev)) { 2903 return g_strdup_printf("storage@%s/disk", usbdev->port->path); 2904 } 2905 } 2906 2907 if (phb) { 2908 /* Replace "pci" with "pci@800000020000000" */ 2909 return g_strdup_printf("pci@%"PRIX64, phb->buid); 2910 } 2911 2912 if (vsc) { 2913 /* Same logic as virtio above */ 2914 unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun; 2915 return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32); 2916 } 2917 2918 if (g_str_equal("pci-bridge", qdev_fw_name(dev))) { 2919 /* SLOF uses "pci" instead of "pci-bridge" for PCI bridges */ 2920 PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE); 2921 return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn)); 2922 } 2923 2924 return NULL; 2925 } 2926 2927 static char *spapr_get_kvm_type(Object *obj, Error **errp) 2928 { 2929 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2930 2931 return g_strdup(spapr->kvm_type); 2932 } 2933 2934 static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) 2935 { 2936 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2937 2938 g_free(spapr->kvm_type); 2939 spapr->kvm_type = g_strdup(value); 2940 } 2941 2942 static bool spapr_get_modern_hotplug_events(Object *obj, Error **errp) 2943 { 2944 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2945 2946 return spapr->use_hotplug_event_source; 2947 } 2948 2949 static void spapr_set_modern_hotplug_events(Object *obj, bool value, 2950 Error **errp) 2951 { 2952 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2953 2954 spapr->use_hotplug_event_source = value; 2955 } 2956 2957 static bool spapr_get_msix_emulation(Object *obj, Error **errp) 2958 { 2959 return true; 2960 } 2961 2962 static char *spapr_get_resize_hpt(Object *obj, Error **errp) 2963 { 2964 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2965 2966 switch (spapr->resize_hpt) { 2967 case SPAPR_RESIZE_HPT_DEFAULT: 2968 return g_strdup("default"); 2969 case SPAPR_RESIZE_HPT_DISABLED: 2970 return g_strdup("disabled"); 2971 case SPAPR_RESIZE_HPT_ENABLED: 2972 return g_strdup("enabled"); 2973 case SPAPR_RESIZE_HPT_REQUIRED: 2974 return g_strdup("required"); 2975 } 2976 g_assert_not_reached(); 2977 } 2978 2979 static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) 2980 { 2981 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 2982 2983 if (strcmp(value, "default") == 0) { 2984 spapr->resize_hpt = SPAPR_RESIZE_HPT_DEFAULT; 2985 } else if (strcmp(value, "disabled") == 0) { 2986 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 2987 } else if (strcmp(value, "enabled") == 0) { 2988 spapr->resize_hpt = SPAPR_RESIZE_HPT_ENABLED; 2989 } else if (strcmp(value, "required") == 0) { 2990 spapr->resize_hpt = SPAPR_RESIZE_HPT_REQUIRED; 2991 } else { 2992 error_setg(errp, "Bad value for \"resize-hpt\" property"); 2993 } 2994 } 2995 2996 static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name, 2997 void *opaque, Error **errp) 2998 { 2999 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3000 } 3001 3002 static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name, 3003 void *opaque, Error **errp) 3004 { 3005 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3006 } 3007 3008 static void spapr_instance_init(Object *obj) 3009 { 3010 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 3011 3012 spapr->htab_fd = -1; 3013 spapr->use_hotplug_event_source = true; 3014 object_property_add_str(obj, "kvm-type", 3015 spapr_get_kvm_type, spapr_set_kvm_type, NULL); 3016 object_property_set_description(obj, "kvm-type", 3017 "Specifies the KVM virtualization mode (HV, PR)", 3018 NULL); 3019 object_property_add_bool(obj, "modern-hotplug-events", 3020 spapr_get_modern_hotplug_events, 3021 spapr_set_modern_hotplug_events, 3022 NULL); 3023 object_property_set_description(obj, "modern-hotplug-events", 3024 "Use dedicated hotplug event mechanism in" 3025 " place of standard EPOW events when possible" 3026 " (required for memory hot-unplug support)", 3027 NULL); 3028 ppc_compat_add_property(obj, "max-cpu-compat", &spapr->max_compat_pvr, 3029 "Maximum permitted CPU compatibility mode", 3030 &error_fatal); 3031 3032 object_property_add_str(obj, "resize-hpt", 3033 spapr_get_resize_hpt, spapr_set_resize_hpt, NULL); 3034 object_property_set_description(obj, "resize-hpt", 3035 "Resizing of the Hash Page Table (enabled, disabled, required)", 3036 NULL); 3037 object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt, 3038 spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort); 3039 object_property_set_description(obj, "vsmt", 3040 "Virtual SMT: KVM behaves as if this were" 3041 " the host's SMT mode", &error_abort); 3042 object_property_add_bool(obj, "vfio-no-msix-emulation", 3043 spapr_get_msix_emulation, NULL, NULL); 3044 } 3045 3046 static void spapr_machine_finalizefn(Object *obj) 3047 { 3048 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 3049 3050 g_free(spapr->kvm_type); 3051 } 3052 3053 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg) 3054 { 3055 cpu_synchronize_state(cs); 3056 ppc_cpu_do_system_reset(cs); 3057 } 3058 3059 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) 3060 { 3061 CPUState *cs; 3062 3063 CPU_FOREACH(cs) { 3064 async_run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 3065 } 3066 } 3067 3068 static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, 3069 uint32_t node, bool dedicated_hp_event_source, 3070 Error **errp) 3071 { 3072 sPAPRDRConnector *drc; 3073 uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; 3074 int i, fdt_offset, fdt_size; 3075 void *fdt; 3076 uint64_t addr = addr_start; 3077 bool hotplugged = spapr_drc_hotplugged(dev); 3078 Error *local_err = NULL; 3079 3080 for (i = 0; i < nr_lmbs; i++) { 3081 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3082 addr / SPAPR_MEMORY_BLOCK_SIZE); 3083 g_assert(drc); 3084 3085 fdt = create_device_tree(&fdt_size); 3086 fdt_offset = spapr_populate_memory_node(fdt, node, addr, 3087 SPAPR_MEMORY_BLOCK_SIZE); 3088 3089 spapr_drc_attach(drc, dev, fdt, fdt_offset, &local_err); 3090 if (local_err) { 3091 while (addr > addr_start) { 3092 addr -= SPAPR_MEMORY_BLOCK_SIZE; 3093 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3094 addr / SPAPR_MEMORY_BLOCK_SIZE); 3095 spapr_drc_detach(drc); 3096 } 3097 g_free(fdt); 3098 error_propagate(errp, local_err); 3099 return; 3100 } 3101 if (!hotplugged) { 3102 spapr_drc_reset(drc); 3103 } 3104 addr += SPAPR_MEMORY_BLOCK_SIZE; 3105 } 3106 /* send hotplug notification to the 3107 * guest only in case of hotplugged memory 3108 */ 3109 if (hotplugged) { 3110 if (dedicated_hp_event_source) { 3111 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3112 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3113 spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3114 nr_lmbs, 3115 spapr_drc_index(drc)); 3116 } else { 3117 spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, 3118 nr_lmbs); 3119 } 3120 } 3121 } 3122 3123 static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3124 Error **errp) 3125 { 3126 Error *local_err = NULL; 3127 sPAPRMachineState *ms = SPAPR_MACHINE(hotplug_dev); 3128 PCDIMMDevice *dimm = PC_DIMM(dev); 3129 PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); 3130 MemoryRegion *mr = ddc->get_memory_region(dimm, &error_abort); 3131 uint64_t size, addr; 3132 uint32_t node; 3133 3134 size = memory_region_size(mr); 3135 3136 pc_dimm_plug(dev, MACHINE(ms), &local_err); 3137 if (local_err) { 3138 goto out; 3139 } 3140 3141 addr = object_property_get_uint(OBJECT(dimm), 3142 PC_DIMM_ADDR_PROP, &local_err); 3143 if (local_err) { 3144 goto out_unplug; 3145 } 3146 3147 node = object_property_get_uint(OBJECT(dev), PC_DIMM_NODE_PROP, 3148 &error_abort); 3149 spapr_add_lmbs(dev, addr, size, node, 3150 spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), 3151 &local_err); 3152 if (local_err) { 3153 goto out_unplug; 3154 } 3155 3156 return; 3157 3158 out_unplug: 3159 pc_dimm_unplug(dev, MACHINE(ms)); 3160 out: 3161 error_propagate(errp, local_err); 3162 } 3163 3164 static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3165 Error **errp) 3166 { 3167 const sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(hotplug_dev); 3168 sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3169 PCDIMMDevice *dimm = PC_DIMM(dev); 3170 PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); 3171 Error *local_err = NULL; 3172 MemoryRegion *mr; 3173 uint64_t size; 3174 Object *memdev; 3175 hwaddr pagesize; 3176 3177 if (!smc->dr_lmb_enabled) { 3178 error_setg(errp, "Memory hotplug not supported for this machine"); 3179 return; 3180 } 3181 3182 mr = ddc->get_memory_region(dimm, errp); 3183 if (!mr) { 3184 return; 3185 } 3186 size = memory_region_size(mr); 3187 3188 if (size % SPAPR_MEMORY_BLOCK_SIZE) { 3189 error_setg(errp, "Hotplugged memory size must be a multiple of " 3190 "%" PRIu64 " MB", SPAPR_MEMORY_BLOCK_SIZE / MiB); 3191 return; 3192 } 3193 3194 memdev = object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, 3195 &error_abort); 3196 pagesize = host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); 3197 spapr_check_pagesize(spapr, pagesize, &local_err); 3198 if (local_err) { 3199 error_propagate(errp, local_err); 3200 return; 3201 } 3202 3203 pc_dimm_pre_plug(dev, MACHINE(hotplug_dev), NULL, errp); 3204 } 3205 3206 struct sPAPRDIMMState { 3207 PCDIMMDevice *dimm; 3208 uint32_t nr_lmbs; 3209 QTAILQ_ENTRY(sPAPRDIMMState) next; 3210 }; 3211 3212 static sPAPRDIMMState *spapr_pending_dimm_unplugs_find(sPAPRMachineState *s, 3213 PCDIMMDevice *dimm) 3214 { 3215 sPAPRDIMMState *dimm_state = NULL; 3216 3217 QTAILQ_FOREACH(dimm_state, &s->pending_dimm_unplugs, next) { 3218 if (dimm_state->dimm == dimm) { 3219 break; 3220 } 3221 } 3222 return dimm_state; 3223 } 3224 3225 static sPAPRDIMMState *spapr_pending_dimm_unplugs_add(sPAPRMachineState *spapr, 3226 uint32_t nr_lmbs, 3227 PCDIMMDevice *dimm) 3228 { 3229 sPAPRDIMMState *ds = NULL; 3230 3231 /* 3232 * If this request is for a DIMM whose removal had failed earlier 3233 * (due to guest's refusal to remove the LMBs), we would have this 3234 * dimm already in the pending_dimm_unplugs list. In that 3235 * case don't add again. 3236 */ 3237 ds = spapr_pending_dimm_unplugs_find(spapr, dimm); 3238 if (!ds) { 3239 ds = g_malloc0(sizeof(sPAPRDIMMState)); 3240 ds->nr_lmbs = nr_lmbs; 3241 ds->dimm = dimm; 3242 QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next); 3243 } 3244 return ds; 3245 } 3246 3247 static void spapr_pending_dimm_unplugs_remove(sPAPRMachineState *spapr, 3248 sPAPRDIMMState *dimm_state) 3249 { 3250 QTAILQ_REMOVE(&spapr->pending_dimm_unplugs, dimm_state, next); 3251 g_free(dimm_state); 3252 } 3253 3254 static sPAPRDIMMState *spapr_recover_pending_dimm_state(sPAPRMachineState *ms, 3255 PCDIMMDevice *dimm) 3256 { 3257 sPAPRDRConnector *drc; 3258 PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); 3259 MemoryRegion *mr = ddc->get_memory_region(dimm, &error_abort); 3260 uint64_t size = memory_region_size(mr); 3261 uint32_t nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3262 uint32_t avail_lmbs = 0; 3263 uint64_t addr_start, addr; 3264 int i; 3265 3266 addr_start = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3267 &error_abort); 3268 3269 addr = addr_start; 3270 for (i = 0; i < nr_lmbs; i++) { 3271 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3272 addr / SPAPR_MEMORY_BLOCK_SIZE); 3273 g_assert(drc); 3274 if (drc->dev) { 3275 avail_lmbs++; 3276 } 3277 addr += SPAPR_MEMORY_BLOCK_SIZE; 3278 } 3279 3280 return spapr_pending_dimm_unplugs_add(ms, avail_lmbs, dimm); 3281 } 3282 3283 /* Callback to be called during DRC release. */ 3284 void spapr_lmb_release(DeviceState *dev) 3285 { 3286 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3287 sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); 3288 sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3289 3290 /* This information will get lost if a migration occurs 3291 * during the unplug process. In this case recover it. */ 3292 if (ds == NULL) { 3293 ds = spapr_recover_pending_dimm_state(spapr, PC_DIMM(dev)); 3294 g_assert(ds); 3295 /* The DRC being examined by the caller at least must be counted */ 3296 g_assert(ds->nr_lmbs); 3297 } 3298 3299 if (--ds->nr_lmbs) { 3300 return; 3301 } 3302 3303 /* 3304 * Now that all the LMBs have been removed by the guest, call the 3305 * unplug handler chain. This can never fail. 3306 */ 3307 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3308 } 3309 3310 static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3311 { 3312 sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3313 sPAPRDIMMState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3314 3315 pc_dimm_unplug(dev, MACHINE(hotplug_dev)); 3316 object_unparent(OBJECT(dev)); 3317 spapr_pending_dimm_unplugs_remove(spapr, ds); 3318 } 3319 3320 static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev, 3321 DeviceState *dev, Error **errp) 3322 { 3323 sPAPRMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3324 Error *local_err = NULL; 3325 PCDIMMDevice *dimm = PC_DIMM(dev); 3326 PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); 3327 MemoryRegion *mr = ddc->get_memory_region(dimm, &error_abort); 3328 uint32_t nr_lmbs; 3329 uint64_t size, addr_start, addr; 3330 int i; 3331 sPAPRDRConnector *drc; 3332 3333 size = memory_region_size(mr); 3334 nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3335 3336 addr_start = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3337 &local_err); 3338 if (local_err) { 3339 goto out; 3340 } 3341 3342 /* 3343 * An existing pending dimm state for this DIMM means that there is an 3344 * unplug operation in progress, waiting for the spapr_lmb_release 3345 * callback to complete the job (BQL can't cover that far). In this case, 3346 * bail out to avoid detaching DRCs that were already released. 3347 */ 3348 if (spapr_pending_dimm_unplugs_find(spapr, dimm)) { 3349 error_setg(&local_err, 3350 "Memory unplug already in progress for device %s", 3351 dev->id); 3352 goto out; 3353 } 3354 3355 spapr_pending_dimm_unplugs_add(spapr, nr_lmbs, dimm); 3356 3357 addr = addr_start; 3358 for (i = 0; i < nr_lmbs; i++) { 3359 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3360 addr / SPAPR_MEMORY_BLOCK_SIZE); 3361 g_assert(drc); 3362 3363 spapr_drc_detach(drc); 3364 addr += SPAPR_MEMORY_BLOCK_SIZE; 3365 } 3366 3367 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3368 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3369 spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3370 nr_lmbs, spapr_drc_index(drc)); 3371 out: 3372 error_propagate(errp, local_err); 3373 } 3374 3375 static void *spapr_populate_hotplug_cpu_dt(CPUState *cs, int *fdt_offset, 3376 sPAPRMachineState *spapr) 3377 { 3378 PowerPCCPU *cpu = POWERPC_CPU(cs); 3379 DeviceClass *dc = DEVICE_GET_CLASS(cs); 3380 int id = spapr_get_vcpu_id(cpu); 3381 void *fdt; 3382 int offset, fdt_size; 3383 char *nodename; 3384 3385 fdt = create_device_tree(&fdt_size); 3386 nodename = g_strdup_printf("%s@%x", dc->fw_name, id); 3387 offset = fdt_add_subnode(fdt, 0, nodename); 3388 3389 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 3390 g_free(nodename); 3391 3392 *fdt_offset = offset; 3393 return fdt; 3394 } 3395 3396 /* Callback to be called during DRC release. */ 3397 void spapr_core_release(DeviceState *dev) 3398 { 3399 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3400 3401 /* Call the unplug handler chain. This can never fail. */ 3402 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3403 } 3404 3405 static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3406 { 3407 MachineState *ms = MACHINE(hotplug_dev); 3408 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms); 3409 CPUCore *cc = CPU_CORE(dev); 3410 CPUArchId *core_slot = spapr_find_cpu_slot(ms, cc->core_id, NULL); 3411 3412 if (smc->pre_2_10_has_unused_icps) { 3413 sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); 3414 int i; 3415 3416 for (i = 0; i < cc->nr_threads; i++) { 3417 CPUState *cs = CPU(sc->threads[i]); 3418 3419 pre_2_10_vmstate_register_dummy_icp(cs->cpu_index); 3420 } 3421 } 3422 3423 assert(core_slot); 3424 core_slot->cpu = NULL; 3425 object_unparent(OBJECT(dev)); 3426 } 3427 3428 static 3429 void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, 3430 Error **errp) 3431 { 3432 sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3433 int index; 3434 sPAPRDRConnector *drc; 3435 CPUCore *cc = CPU_CORE(dev); 3436 3437 if (!spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index)) { 3438 error_setg(errp, "Unable to find CPU core with core-id: %d", 3439 cc->core_id); 3440 return; 3441 } 3442 if (index == 0) { 3443 error_setg(errp, "Boot CPU core may not be unplugged"); 3444 return; 3445 } 3446 3447 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3448 spapr_vcpu_id(spapr, cc->core_id)); 3449 g_assert(drc); 3450 3451 spapr_drc_detach(drc); 3452 3453 spapr_hotplug_req_remove_by_index(drc); 3454 } 3455 3456 static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3457 Error **errp) 3458 { 3459 sPAPRMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3460 MachineClass *mc = MACHINE_GET_CLASS(spapr); 3461 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 3462 sPAPRCPUCore *core = SPAPR_CPU_CORE(OBJECT(dev)); 3463 CPUCore *cc = CPU_CORE(dev); 3464 CPUState *cs = CPU(core->threads[0]); 3465 sPAPRDRConnector *drc; 3466 Error *local_err = NULL; 3467 CPUArchId *core_slot; 3468 int index; 3469 bool hotplugged = spapr_drc_hotplugged(dev); 3470 3471 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3472 if (!core_slot) { 3473 error_setg(errp, "Unable to find CPU core with core-id: %d", 3474 cc->core_id); 3475 return; 3476 } 3477 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3478 spapr_vcpu_id(spapr, cc->core_id)); 3479 3480 g_assert(drc || !mc->has_hotpluggable_cpus); 3481 3482 if (drc) { 3483 void *fdt; 3484 int fdt_offset; 3485 3486 fdt = spapr_populate_hotplug_cpu_dt(cs, &fdt_offset, spapr); 3487 3488 spapr_drc_attach(drc, dev, fdt, fdt_offset, &local_err); 3489 if (local_err) { 3490 g_free(fdt); 3491 error_propagate(errp, local_err); 3492 return; 3493 } 3494 3495 if (hotplugged) { 3496 /* 3497 * Send hotplug notification interrupt to the guest only 3498 * in case of hotplugged CPUs. 3499 */ 3500 spapr_hotplug_req_add_by_index(drc); 3501 } else { 3502 spapr_drc_reset(drc); 3503 } 3504 } 3505 3506 core_slot->cpu = OBJECT(dev); 3507 3508 if (smc->pre_2_10_has_unused_icps) { 3509 int i; 3510 3511 for (i = 0; i < cc->nr_threads; i++) { 3512 cs = CPU(core->threads[i]); 3513 pre_2_10_vmstate_unregister_dummy_icp(cs->cpu_index); 3514 } 3515 } 3516 } 3517 3518 static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3519 Error **errp) 3520 { 3521 MachineState *machine = MACHINE(OBJECT(hotplug_dev)); 3522 MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev); 3523 Error *local_err = NULL; 3524 CPUCore *cc = CPU_CORE(dev); 3525 const char *base_core_type = spapr_get_cpu_core_type(machine->cpu_type); 3526 const char *type = object_get_typename(OBJECT(dev)); 3527 CPUArchId *core_slot; 3528 int index; 3529 3530 if (dev->hotplugged && !mc->has_hotpluggable_cpus) { 3531 error_setg(&local_err, "CPU hotplug not supported for this machine"); 3532 goto out; 3533 } 3534 3535 if (strcmp(base_core_type, type)) { 3536 error_setg(&local_err, "CPU core type should be %s", base_core_type); 3537 goto out; 3538 } 3539 3540 if (cc->core_id % smp_threads) { 3541 error_setg(&local_err, "invalid core id %d", cc->core_id); 3542 goto out; 3543 } 3544 3545 /* 3546 * In general we should have homogeneous threads-per-core, but old 3547 * (pre hotplug support) machine types allow the last core to have 3548 * reduced threads as a compatibility hack for when we allowed 3549 * total vcpus not a multiple of threads-per-core. 3550 */ 3551 if (mc->has_hotpluggable_cpus && (cc->nr_threads != smp_threads)) { 3552 error_setg(&local_err, "invalid nr-threads %d, must be %d", 3553 cc->nr_threads, smp_threads); 3554 goto out; 3555 } 3556 3557 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3558 if (!core_slot) { 3559 error_setg(&local_err, "core id %d out of range", cc->core_id); 3560 goto out; 3561 } 3562 3563 if (core_slot->cpu) { 3564 error_setg(&local_err, "core %d already populated", cc->core_id); 3565 goto out; 3566 } 3567 3568 numa_cpu_pre_plug(core_slot, dev, &local_err); 3569 3570 out: 3571 error_propagate(errp, local_err); 3572 } 3573 3574 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, 3575 DeviceState *dev, Error **errp) 3576 { 3577 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 3578 spapr_memory_plug(hotplug_dev, dev, errp); 3579 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 3580 spapr_core_plug(hotplug_dev, dev, errp); 3581 } 3582 } 3583 3584 static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, 3585 DeviceState *dev, Error **errp) 3586 { 3587 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 3588 spapr_memory_unplug(hotplug_dev, dev); 3589 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 3590 spapr_core_unplug(hotplug_dev, dev); 3591 } 3592 } 3593 3594 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, 3595 DeviceState *dev, Error **errp) 3596 { 3597 sPAPRMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3598 MachineClass *mc = MACHINE_GET_CLASS(sms); 3599 3600 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 3601 if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { 3602 spapr_memory_unplug_request(hotplug_dev, dev, errp); 3603 } else { 3604 /* NOTE: this means there is a window after guest reset, prior to 3605 * CAS negotiation, where unplug requests will fail due to the 3606 * capability not being detected yet. This is a bit different than 3607 * the case with PCI unplug, where the events will be queued and 3608 * eventually handled by the guest after boot 3609 */ 3610 error_setg(errp, "Memory hot unplug not supported for this guest"); 3611 } 3612 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 3613 if (!mc->has_hotpluggable_cpus) { 3614 error_setg(errp, "CPU hot unplug not supported on this machine"); 3615 return; 3616 } 3617 spapr_core_unplug_request(hotplug_dev, dev, errp); 3618 } 3619 } 3620 3621 static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev, 3622 DeviceState *dev, Error **errp) 3623 { 3624 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 3625 spapr_memory_pre_plug(hotplug_dev, dev, errp); 3626 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 3627 spapr_core_pre_plug(hotplug_dev, dev, errp); 3628 } 3629 } 3630 3631 static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine, 3632 DeviceState *dev) 3633 { 3634 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || 3635 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 3636 return HOTPLUG_HANDLER(machine); 3637 } 3638 return NULL; 3639 } 3640 3641 static CpuInstanceProperties 3642 spapr_cpu_index_to_props(MachineState *machine, unsigned cpu_index) 3643 { 3644 CPUArchId *core_slot; 3645 MachineClass *mc = MACHINE_GET_CLASS(machine); 3646 3647 /* make sure possible_cpu are intialized */ 3648 mc->possible_cpu_arch_ids(machine); 3649 /* get CPU core slot containing thread that matches cpu_index */ 3650 core_slot = spapr_find_cpu_slot(machine, cpu_index, NULL); 3651 assert(core_slot); 3652 return core_slot->props; 3653 } 3654 3655 static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx) 3656 { 3657 return idx / smp_cores % nb_numa_nodes; 3658 } 3659 3660 static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine) 3661 { 3662 int i; 3663 const char *core_type; 3664 int spapr_max_cores = max_cpus / smp_threads; 3665 MachineClass *mc = MACHINE_GET_CLASS(machine); 3666 3667 if (!mc->has_hotpluggable_cpus) { 3668 spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads; 3669 } 3670 if (machine->possible_cpus) { 3671 assert(machine->possible_cpus->len == spapr_max_cores); 3672 return machine->possible_cpus; 3673 } 3674 3675 core_type = spapr_get_cpu_core_type(machine->cpu_type); 3676 if (!core_type) { 3677 error_report("Unable to find sPAPR CPU Core definition"); 3678 exit(1); 3679 } 3680 3681 machine->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + 3682 sizeof(CPUArchId) * spapr_max_cores); 3683 machine->possible_cpus->len = spapr_max_cores; 3684 for (i = 0; i < machine->possible_cpus->len; i++) { 3685 int core_id = i * smp_threads; 3686 3687 machine->possible_cpus->cpus[i].type = core_type; 3688 machine->possible_cpus->cpus[i].vcpus_count = smp_threads; 3689 machine->possible_cpus->cpus[i].arch_id = core_id; 3690 machine->possible_cpus->cpus[i].props.has_core_id = true; 3691 machine->possible_cpus->cpus[i].props.core_id = core_id; 3692 } 3693 return machine->possible_cpus; 3694 } 3695 3696 static void spapr_phb_placement(sPAPRMachineState *spapr, uint32_t index, 3697 uint64_t *buid, hwaddr *pio, 3698 hwaddr *mmio32, hwaddr *mmio64, 3699 unsigned n_dma, uint32_t *liobns, Error **errp) 3700 { 3701 /* 3702 * New-style PHB window placement. 3703 * 3704 * Goals: Gives large (1TiB), naturally aligned 64-bit MMIO window 3705 * for each PHB, in addition to 2GiB 32-bit MMIO and 64kiB PIO 3706 * windows. 3707 * 3708 * Some guest kernels can't work with MMIO windows above 1<<46 3709 * (64TiB), so we place up to 31 PHBs in the area 32TiB..64TiB 3710 * 3711 * 32TiB..(33TiB+1984kiB) contains the 64kiB PIO windows for each 3712 * PHB stacked together. (32TiB+2GiB)..(32TiB+64GiB) contains the 3713 * 2GiB 32-bit MMIO windows for each PHB. Then 33..64TiB has the 3714 * 1TiB 64-bit MMIO windows for each PHB. 3715 */ 3716 const uint64_t base_buid = 0x800000020000000ULL; 3717 #define SPAPR_MAX_PHBS ((SPAPR_PCI_LIMIT - SPAPR_PCI_BASE) / \ 3718 SPAPR_PCI_MEM64_WIN_SIZE - 1) 3719 int i; 3720 3721 /* Sanity check natural alignments */ 3722 QEMU_BUILD_BUG_ON((SPAPR_PCI_BASE % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 3723 QEMU_BUILD_BUG_ON((SPAPR_PCI_LIMIT % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 3724 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM64_WIN_SIZE % SPAPR_PCI_MEM32_WIN_SIZE) != 0); 3725 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM32_WIN_SIZE % SPAPR_PCI_IO_WIN_SIZE) != 0); 3726 /* Sanity check bounds */ 3727 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_IO_WIN_SIZE) > 3728 SPAPR_PCI_MEM32_WIN_SIZE); 3729 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_MEM32_WIN_SIZE) > 3730 SPAPR_PCI_MEM64_WIN_SIZE); 3731 3732 if (index >= SPAPR_MAX_PHBS) { 3733 error_setg(errp, "\"index\" for PAPR PHB is too large (max %llu)", 3734 SPAPR_MAX_PHBS - 1); 3735 return; 3736 } 3737 3738 *buid = base_buid + index; 3739 for (i = 0; i < n_dma; ++i) { 3740 liobns[i] = SPAPR_PCI_LIOBN(index, i); 3741 } 3742 3743 *pio = SPAPR_PCI_BASE + index * SPAPR_PCI_IO_WIN_SIZE; 3744 *mmio32 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM32_WIN_SIZE; 3745 *mmio64 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM64_WIN_SIZE; 3746 } 3747 3748 static ICSState *spapr_ics_get(XICSFabric *dev, int irq) 3749 { 3750 sPAPRMachineState *spapr = SPAPR_MACHINE(dev); 3751 3752 return ics_valid_irq(spapr->ics, irq) ? spapr->ics : NULL; 3753 } 3754 3755 static void spapr_ics_resend(XICSFabric *dev) 3756 { 3757 sPAPRMachineState *spapr = SPAPR_MACHINE(dev); 3758 3759 ics_resend(spapr->ics); 3760 } 3761 3762 static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) 3763 { 3764 PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); 3765 3766 return cpu ? ICP(cpu->intc) : NULL; 3767 } 3768 3769 static void spapr_pic_print_info(InterruptStatsProvider *obj, 3770 Monitor *mon) 3771 { 3772 sPAPRMachineState *spapr = SPAPR_MACHINE(obj); 3773 sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3774 3775 smc->irq->print_info(spapr, mon); 3776 } 3777 3778 int spapr_get_vcpu_id(PowerPCCPU *cpu) 3779 { 3780 return cpu->vcpu_id; 3781 } 3782 3783 void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp) 3784 { 3785 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 3786 int vcpu_id; 3787 3788 vcpu_id = spapr_vcpu_id(spapr, cpu_index); 3789 3790 if (kvm_enabled() && !kvm_vcpu_id_is_valid(vcpu_id)) { 3791 error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id); 3792 error_append_hint(errp, "Adjust the number of cpus to %d " 3793 "or try to raise the number of threads per core\n", 3794 vcpu_id * smp_threads / spapr->vsmt); 3795 return; 3796 } 3797 3798 cpu->vcpu_id = vcpu_id; 3799 } 3800 3801 PowerPCCPU *spapr_find_cpu(int vcpu_id) 3802 { 3803 CPUState *cs; 3804 3805 CPU_FOREACH(cs) { 3806 PowerPCCPU *cpu = POWERPC_CPU(cs); 3807 3808 if (spapr_get_vcpu_id(cpu) == vcpu_id) { 3809 return cpu; 3810 } 3811 } 3812 3813 return NULL; 3814 } 3815 3816 static void spapr_machine_class_init(ObjectClass *oc, void *data) 3817 { 3818 MachineClass *mc = MACHINE_CLASS(oc); 3819 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 3820 FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); 3821 NMIClass *nc = NMI_CLASS(oc); 3822 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 3823 PPCVirtualHypervisorClass *vhc = PPC_VIRTUAL_HYPERVISOR_CLASS(oc); 3824 XICSFabricClass *xic = XICS_FABRIC_CLASS(oc); 3825 InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); 3826 3827 mc->desc = "pSeries Logical Partition (PAPR compliant)"; 3828 mc->ignore_boot_device_suffixes = true; 3829 3830 /* 3831 * We set up the default / latest behaviour here. The class_init 3832 * functions for the specific versioned machine types can override 3833 * these details for backwards compatibility 3834 */ 3835 mc->init = spapr_machine_init; 3836 mc->reset = spapr_machine_reset; 3837 mc->block_default_type = IF_SCSI; 3838 mc->max_cpus = 1024; 3839 mc->no_parallel = 1; 3840 mc->default_boot_order = ""; 3841 mc->default_ram_size = 512 * MiB; 3842 mc->default_display = "std"; 3843 mc->kvm_type = spapr_kvm_type; 3844 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE); 3845 mc->pci_allow_0_address = true; 3846 assert(!mc->get_hotplug_handler); 3847 mc->get_hotplug_handler = spapr_get_hotplug_handler; 3848 hc->pre_plug = spapr_machine_device_pre_plug; 3849 hc->plug = spapr_machine_device_plug; 3850 mc->cpu_index_to_instance_props = spapr_cpu_index_to_props; 3851 mc->get_default_cpu_node_id = spapr_get_default_cpu_node_id; 3852 mc->possible_cpu_arch_ids = spapr_possible_cpu_arch_ids; 3853 hc->unplug_request = spapr_machine_device_unplug_request; 3854 hc->unplug = spapr_machine_device_unplug; 3855 3856 smc->dr_lmb_enabled = true; 3857 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); 3858 mc->has_hotpluggable_cpus = true; 3859 smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; 3860 fwc->get_dev_path = spapr_get_fw_dev_path; 3861 nc->nmi_monitor_handler = spapr_nmi; 3862 smc->phb_placement = spapr_phb_placement; 3863 vhc->hypercall = emulate_spapr_hypercall; 3864 vhc->hpt_mask = spapr_hpt_mask; 3865 vhc->map_hptes = spapr_map_hptes; 3866 vhc->unmap_hptes = spapr_unmap_hptes; 3867 vhc->store_hpte = spapr_store_hpte; 3868 vhc->get_patbe = spapr_get_patbe; 3869 vhc->encode_hpt_for_kvm_pr = spapr_encode_hpt_for_kvm_pr; 3870 xic->ics_get = spapr_ics_get; 3871 xic->ics_resend = spapr_ics_resend; 3872 xic->icp_get = spapr_icp_get; 3873 ispc->print_info = spapr_pic_print_info; 3874 /* Force NUMA node memory size to be a multiple of 3875 * SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the granularity 3876 * in which LMBs are represented and hot-added 3877 */ 3878 mc->numa_mem_align_shift = 28; 3879 3880 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; 3881 smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; 3882 smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; 3883 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; 3884 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; 3885 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; 3886 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ 3887 spapr_caps_add_properties(smc, &error_abort); 3888 smc->irq = &spapr_irq_xics; 3889 } 3890 3891 static const TypeInfo spapr_machine_info = { 3892 .name = TYPE_SPAPR_MACHINE, 3893 .parent = TYPE_MACHINE, 3894 .abstract = true, 3895 .instance_size = sizeof(sPAPRMachineState), 3896 .instance_init = spapr_instance_init, 3897 .instance_finalize = spapr_machine_finalizefn, 3898 .class_size = sizeof(sPAPRMachineClass), 3899 .class_init = spapr_machine_class_init, 3900 .interfaces = (InterfaceInfo[]) { 3901 { TYPE_FW_PATH_PROVIDER }, 3902 { TYPE_NMI }, 3903 { TYPE_HOTPLUG_HANDLER }, 3904 { TYPE_PPC_VIRTUAL_HYPERVISOR }, 3905 { TYPE_XICS_FABRIC }, 3906 { TYPE_INTERRUPT_STATS_PROVIDER }, 3907 { } 3908 }, 3909 }; 3910 3911 #define DEFINE_SPAPR_MACHINE(suffix, verstr, latest) \ 3912 static void spapr_machine_##suffix##_class_init(ObjectClass *oc, \ 3913 void *data) \ 3914 { \ 3915 MachineClass *mc = MACHINE_CLASS(oc); \ 3916 spapr_machine_##suffix##_class_options(mc); \ 3917 if (latest) { \ 3918 mc->alias = "pseries"; \ 3919 mc->is_default = 1; \ 3920 } \ 3921 } \ 3922 static void spapr_machine_##suffix##_instance_init(Object *obj) \ 3923 { \ 3924 MachineState *machine = MACHINE(obj); \ 3925 spapr_machine_##suffix##_instance_options(machine); \ 3926 } \ 3927 static const TypeInfo spapr_machine_##suffix##_info = { \ 3928 .name = MACHINE_TYPE_NAME("pseries-" verstr), \ 3929 .parent = TYPE_SPAPR_MACHINE, \ 3930 .class_init = spapr_machine_##suffix##_class_init, \ 3931 .instance_init = spapr_machine_##suffix##_instance_init, \ 3932 }; \ 3933 static void spapr_machine_register_##suffix(void) \ 3934 { \ 3935 type_register(&spapr_machine_##suffix##_info); \ 3936 } \ 3937 type_init(spapr_machine_register_##suffix) 3938 3939 /* 3940 * pseries-3.1 3941 */ 3942 static void spapr_machine_3_1_instance_options(MachineState *machine) 3943 { 3944 } 3945 3946 static void spapr_machine_3_1_class_options(MachineClass *mc) 3947 { 3948 /* Defaults for the latest behaviour inherited from the base class */ 3949 } 3950 3951 DEFINE_SPAPR_MACHINE(3_1, "3.1", true); 3952 3953 /* 3954 * pseries-3.0 3955 */ 3956 #define SPAPR_COMPAT_3_0 \ 3957 HW_COMPAT_3_0 3958 3959 static void spapr_machine_3_0_instance_options(MachineState *machine) 3960 { 3961 spapr_machine_3_1_instance_options(machine); 3962 } 3963 3964 static void spapr_machine_3_0_class_options(MachineClass *mc) 3965 { 3966 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 3967 3968 spapr_machine_3_1_class_options(mc); 3969 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_3_0); 3970 3971 smc->legacy_irq_allocation = true; 3972 } 3973 3974 DEFINE_SPAPR_MACHINE(3_0, "3.0", false); 3975 3976 /* 3977 * pseries-2.12 3978 */ 3979 #define SPAPR_COMPAT_2_12 \ 3980 HW_COMPAT_2_12 \ 3981 { \ 3982 .driver = TYPE_POWERPC_CPU, \ 3983 .property = "pre-3.0-migration", \ 3984 .value = "on", \ 3985 }, \ 3986 { \ 3987 .driver = TYPE_SPAPR_CPU_CORE, \ 3988 .property = "pre-3.0-migration", \ 3989 .value = "on", \ 3990 }, 3991 3992 static void spapr_machine_2_12_instance_options(MachineState *machine) 3993 { 3994 spapr_machine_3_0_instance_options(machine); 3995 } 3996 3997 static void spapr_machine_2_12_class_options(MachineClass *mc) 3998 { 3999 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4000 4001 spapr_machine_3_0_class_options(mc); 4002 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_12); 4003 4004 /* We depend on kvm_enabled() to choose a default value for the 4005 * hpt-max-page-size capability. Of course we can't do it here 4006 * because this is too early and the HW accelerator isn't initialzed 4007 * yet. Postpone this to machine init (see default_caps_with_cpu()). 4008 */ 4009 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 0; 4010 } 4011 4012 DEFINE_SPAPR_MACHINE(2_12, "2.12", false); 4013 4014 static void spapr_machine_2_12_sxxm_instance_options(MachineState *machine) 4015 { 4016 spapr_machine_2_12_instance_options(machine); 4017 } 4018 4019 static void spapr_machine_2_12_sxxm_class_options(MachineClass *mc) 4020 { 4021 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4022 4023 spapr_machine_2_12_class_options(mc); 4024 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4025 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4026 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD; 4027 } 4028 4029 DEFINE_SPAPR_MACHINE(2_12_sxxm, "2.12-sxxm", false); 4030 4031 /* 4032 * pseries-2.11 4033 */ 4034 #define SPAPR_COMPAT_2_11 \ 4035 HW_COMPAT_2_11 4036 4037 static void spapr_machine_2_11_instance_options(MachineState *machine) 4038 { 4039 spapr_machine_2_12_instance_options(machine); 4040 } 4041 4042 static void spapr_machine_2_11_class_options(MachineClass *mc) 4043 { 4044 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4045 4046 spapr_machine_2_12_class_options(mc); 4047 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; 4048 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_11); 4049 } 4050 4051 DEFINE_SPAPR_MACHINE(2_11, "2.11", false); 4052 4053 /* 4054 * pseries-2.10 4055 */ 4056 #define SPAPR_COMPAT_2_10 \ 4057 HW_COMPAT_2_10 4058 4059 static void spapr_machine_2_10_instance_options(MachineState *machine) 4060 { 4061 spapr_machine_2_11_instance_options(machine); 4062 } 4063 4064 static void spapr_machine_2_10_class_options(MachineClass *mc) 4065 { 4066 spapr_machine_2_11_class_options(mc); 4067 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_10); 4068 } 4069 4070 DEFINE_SPAPR_MACHINE(2_10, "2.10", false); 4071 4072 /* 4073 * pseries-2.9 4074 */ 4075 #define SPAPR_COMPAT_2_9 \ 4076 HW_COMPAT_2_9 \ 4077 { \ 4078 .driver = TYPE_POWERPC_CPU, \ 4079 .property = "pre-2.10-migration", \ 4080 .value = "on", \ 4081 }, \ 4082 4083 static void spapr_machine_2_9_instance_options(MachineState *machine) 4084 { 4085 spapr_machine_2_10_instance_options(machine); 4086 } 4087 4088 static void spapr_machine_2_9_class_options(MachineClass *mc) 4089 { 4090 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4091 4092 spapr_machine_2_10_class_options(mc); 4093 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_9); 4094 mc->numa_auto_assign_ram = numa_legacy_auto_assign_ram; 4095 smc->pre_2_10_has_unused_icps = true; 4096 smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED; 4097 } 4098 4099 DEFINE_SPAPR_MACHINE(2_9, "2.9", false); 4100 4101 /* 4102 * pseries-2.8 4103 */ 4104 #define SPAPR_COMPAT_2_8 \ 4105 HW_COMPAT_2_8 \ 4106 { \ 4107 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \ 4108 .property = "pcie-extended-configuration-space", \ 4109 .value = "off", \ 4110 }, 4111 4112 static void spapr_machine_2_8_instance_options(MachineState *machine) 4113 { 4114 spapr_machine_2_9_instance_options(machine); 4115 } 4116 4117 static void spapr_machine_2_8_class_options(MachineClass *mc) 4118 { 4119 spapr_machine_2_9_class_options(mc); 4120 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_8); 4121 mc->numa_mem_align_shift = 23; 4122 } 4123 4124 DEFINE_SPAPR_MACHINE(2_8, "2.8", false); 4125 4126 /* 4127 * pseries-2.7 4128 */ 4129 #define SPAPR_COMPAT_2_7 \ 4130 HW_COMPAT_2_7 \ 4131 { \ 4132 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \ 4133 .property = "mem_win_size", \ 4134 .value = stringify(SPAPR_PCI_2_7_MMIO_WIN_SIZE),\ 4135 }, \ 4136 { \ 4137 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \ 4138 .property = "mem64_win_size", \ 4139 .value = "0", \ 4140 }, \ 4141 { \ 4142 .driver = TYPE_POWERPC_CPU, \ 4143 .property = "pre-2.8-migration", \ 4144 .value = "on", \ 4145 }, \ 4146 { \ 4147 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \ 4148 .property = "pre-2.8-migration", \ 4149 .value = "on", \ 4150 }, 4151 4152 static void phb_placement_2_7(sPAPRMachineState *spapr, uint32_t index, 4153 uint64_t *buid, hwaddr *pio, 4154 hwaddr *mmio32, hwaddr *mmio64, 4155 unsigned n_dma, uint32_t *liobns, Error **errp) 4156 { 4157 /* Legacy PHB placement for pseries-2.7 and earlier machine types */ 4158 const uint64_t base_buid = 0x800000020000000ULL; 4159 const hwaddr phb_spacing = 0x1000000000ULL; /* 64 GiB */ 4160 const hwaddr mmio_offset = 0xa0000000; /* 2 GiB + 512 MiB */ 4161 const hwaddr pio_offset = 0x80000000; /* 2 GiB */ 4162 const uint32_t max_index = 255; 4163 const hwaddr phb0_alignment = 0x10000000000ULL; /* 1 TiB */ 4164 4165 uint64_t ram_top = MACHINE(spapr)->ram_size; 4166 hwaddr phb0_base, phb_base; 4167 int i; 4168 4169 /* Do we have device memory? */ 4170 if (MACHINE(spapr)->maxram_size > ram_top) { 4171 /* Can't just use maxram_size, because there may be an 4172 * alignment gap between normal and device memory regions 4173 */ 4174 ram_top = MACHINE(spapr)->device_memory->base + 4175 memory_region_size(&MACHINE(spapr)->device_memory->mr); 4176 } 4177 4178 phb0_base = QEMU_ALIGN_UP(ram_top, phb0_alignment); 4179 4180 if (index > max_index) { 4181 error_setg(errp, "\"index\" for PAPR PHB is too large (max %u)", 4182 max_index); 4183 return; 4184 } 4185 4186 *buid = base_buid + index; 4187 for (i = 0; i < n_dma; ++i) { 4188 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4189 } 4190 4191 phb_base = phb0_base + index * phb_spacing; 4192 *pio = phb_base + pio_offset; 4193 *mmio32 = phb_base + mmio_offset; 4194 /* 4195 * We don't set the 64-bit MMIO window, relying on the PHB's 4196 * fallback behaviour of automatically splitting a large "32-bit" 4197 * window into contiguous 32-bit and 64-bit windows 4198 */ 4199 } 4200 4201 static void spapr_machine_2_7_instance_options(MachineState *machine) 4202 { 4203 sPAPRMachineState *spapr = SPAPR_MACHINE(machine); 4204 4205 spapr_machine_2_8_instance_options(machine); 4206 spapr->use_hotplug_event_source = false; 4207 } 4208 4209 static void spapr_machine_2_7_class_options(MachineClass *mc) 4210 { 4211 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4212 4213 spapr_machine_2_8_class_options(mc); 4214 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power7_v2.3"); 4215 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_7); 4216 smc->phb_placement = phb_placement_2_7; 4217 } 4218 4219 DEFINE_SPAPR_MACHINE(2_7, "2.7", false); 4220 4221 /* 4222 * pseries-2.6 4223 */ 4224 #define SPAPR_COMPAT_2_6 \ 4225 HW_COMPAT_2_6 \ 4226 { \ 4227 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE,\ 4228 .property = "ddw",\ 4229 .value = stringify(off),\ 4230 }, 4231 4232 static void spapr_machine_2_6_instance_options(MachineState *machine) 4233 { 4234 spapr_machine_2_7_instance_options(machine); 4235 } 4236 4237 static void spapr_machine_2_6_class_options(MachineClass *mc) 4238 { 4239 spapr_machine_2_7_class_options(mc); 4240 mc->has_hotpluggable_cpus = false; 4241 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_6); 4242 } 4243 4244 DEFINE_SPAPR_MACHINE(2_6, "2.6", false); 4245 4246 /* 4247 * pseries-2.5 4248 */ 4249 #define SPAPR_COMPAT_2_5 \ 4250 HW_COMPAT_2_5 \ 4251 { \ 4252 .driver = "spapr-vlan", \ 4253 .property = "use-rx-buffer-pools", \ 4254 .value = "off", \ 4255 }, 4256 4257 static void spapr_machine_2_5_instance_options(MachineState *machine) 4258 { 4259 spapr_machine_2_6_instance_options(machine); 4260 } 4261 4262 static void spapr_machine_2_5_class_options(MachineClass *mc) 4263 { 4264 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4265 4266 spapr_machine_2_6_class_options(mc); 4267 smc->use_ohci_by_default = true; 4268 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_5); 4269 } 4270 4271 DEFINE_SPAPR_MACHINE(2_5, "2.5", false); 4272 4273 /* 4274 * pseries-2.4 4275 */ 4276 #define SPAPR_COMPAT_2_4 \ 4277 HW_COMPAT_2_4 4278 4279 static void spapr_machine_2_4_instance_options(MachineState *machine) 4280 { 4281 spapr_machine_2_5_instance_options(machine); 4282 } 4283 4284 static void spapr_machine_2_4_class_options(MachineClass *mc) 4285 { 4286 sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4287 4288 spapr_machine_2_5_class_options(mc); 4289 smc->dr_lmb_enabled = false; 4290 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_4); 4291 } 4292 4293 DEFINE_SPAPR_MACHINE(2_4, "2.4", false); 4294 4295 /* 4296 * pseries-2.3 4297 */ 4298 #define SPAPR_COMPAT_2_3 \ 4299 HW_COMPAT_2_3 \ 4300 {\ 4301 .driver = "spapr-pci-host-bridge",\ 4302 .property = "dynamic-reconfiguration",\ 4303 .value = "off",\ 4304 }, 4305 4306 static void spapr_machine_2_3_instance_options(MachineState *machine) 4307 { 4308 spapr_machine_2_4_instance_options(machine); 4309 } 4310 4311 static void spapr_machine_2_3_class_options(MachineClass *mc) 4312 { 4313 spapr_machine_2_4_class_options(mc); 4314 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_3); 4315 } 4316 DEFINE_SPAPR_MACHINE(2_3, "2.3", false); 4317 4318 /* 4319 * pseries-2.2 4320 */ 4321 4322 #define SPAPR_COMPAT_2_2 \ 4323 HW_COMPAT_2_2 \ 4324 {\ 4325 .driver = TYPE_SPAPR_PCI_HOST_BRIDGE,\ 4326 .property = "mem_win_size",\ 4327 .value = "0x20000000",\ 4328 }, 4329 4330 static void spapr_machine_2_2_instance_options(MachineState *machine) 4331 { 4332 spapr_machine_2_3_instance_options(machine); 4333 machine->suppress_vmdesc = true; 4334 } 4335 4336 static void spapr_machine_2_2_class_options(MachineClass *mc) 4337 { 4338 spapr_machine_2_3_class_options(mc); 4339 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_2); 4340 } 4341 DEFINE_SPAPR_MACHINE(2_2, "2.2", false); 4342 4343 /* 4344 * pseries-2.1 4345 */ 4346 #define SPAPR_COMPAT_2_1 \ 4347 HW_COMPAT_2_1 4348 4349 static void spapr_machine_2_1_instance_options(MachineState *machine) 4350 { 4351 spapr_machine_2_2_instance_options(machine); 4352 } 4353 4354 static void spapr_machine_2_1_class_options(MachineClass *mc) 4355 { 4356 spapr_machine_2_2_class_options(mc); 4357 SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_1); 4358 } 4359 DEFINE_SPAPR_MACHINE(2_1, "2.1", false); 4360 4361 static void spapr_machine_register_types(void) 4362 { 4363 type_register_static(&spapr_machine_info); 4364 } 4365 4366 type_init(spapr_machine_register_types) 4367