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 "qemu-common.h" 29 #include "qapi/error.h" 30 #include "qapi/visitor.h" 31 #include "sysemu/sysemu.h" 32 #include "sysemu/hostmem.h" 33 #include "sysemu/numa.h" 34 #include "sysemu/qtest.h" 35 #include "sysemu/reset.h" 36 #include "sysemu/runstate.h" 37 #include "qemu/log.h" 38 #include "hw/fw-path-provider.h" 39 #include "elf.h" 40 #include "net/net.h" 41 #include "sysemu/device_tree.h" 42 #include "sysemu/cpus.h" 43 #include "sysemu/hw_accel.h" 44 #include "kvm_ppc.h" 45 #include "migration/misc.h" 46 #include "migration/qemu-file-types.h" 47 #include "migration/global_state.h" 48 #include "migration/register.h" 49 #include "migration/blocker.h" 50 #include "mmu-hash64.h" 51 #include "mmu-book3s-v3.h" 52 #include "cpu-models.h" 53 #include "hw/core/cpu.h" 54 55 #include "hw/boards.h" 56 #include "hw/ppc/ppc.h" 57 #include "hw/loader.h" 58 59 #include "hw/ppc/fdt.h" 60 #include "hw/ppc/spapr.h" 61 #include "hw/ppc/spapr_vio.h" 62 #include "hw/qdev-properties.h" 63 #include "hw/pci-host/spapr.h" 64 #include "hw/pci/msi.h" 65 66 #include "hw/pci/pci.h" 67 #include "hw/scsi/scsi.h" 68 #include "hw/virtio/virtio-scsi.h" 69 #include "hw/virtio/vhost-scsi-common.h" 70 71 #include "exec/address-spaces.h" 72 #include "exec/ram_addr.h" 73 #include "hw/usb.h" 74 #include "qemu/config-file.h" 75 #include "qemu/error-report.h" 76 #include "trace.h" 77 #include "hw/nmi.h" 78 #include "hw/intc/intc.h" 79 80 #include "hw/ppc/spapr_cpu_core.h" 81 #include "hw/mem/memory-device.h" 82 #include "hw/ppc/spapr_tpm_proxy.h" 83 #include "hw/ppc/spapr_nvdimm.h" 84 85 #include "monitor/monitor.h" 86 87 #include <libfdt.h> 88 89 /* SLOF memory layout: 90 * 91 * SLOF raw image loaded at 0, copies its romfs right below the flat 92 * device-tree, then position SLOF itself 31M below that 93 * 94 * So we set FW_OVERHEAD to 40MB which should account for all of that 95 * and more 96 * 97 * We load our kernel at 4M, leaving space for SLOF initial image 98 */ 99 #define FDT_MAX_SIZE 0x100000 100 #define RTAS_MAX_ADDR 0x80000000 /* RTAS must stay below that */ 101 #define FW_MAX_SIZE 0x400000 102 #define FW_FILE_NAME "slof.bin" 103 #define FW_OVERHEAD 0x2800000 104 #define KERNEL_LOAD_ADDR FW_MAX_SIZE 105 106 #define MIN_RMA_SLOF 128UL 107 108 #define PHANDLE_INTC 0x00001111 109 110 /* These two functions implement the VCPU id numbering: one to compute them 111 * all and one to identify thread 0 of a VCORE. Any change to the first one 112 * is likely to have an impact on the second one, so let's keep them close. 113 */ 114 static int spapr_vcpu_id(SpaprMachineState *spapr, int cpu_index) 115 { 116 MachineState *ms = MACHINE(spapr); 117 unsigned int smp_threads = ms->smp.threads; 118 119 assert(spapr->vsmt); 120 return 121 (cpu_index / smp_threads) * spapr->vsmt + cpu_index % smp_threads; 122 } 123 static bool spapr_is_thread0_in_vcore(SpaprMachineState *spapr, 124 PowerPCCPU *cpu) 125 { 126 assert(spapr->vsmt); 127 return spapr_get_vcpu_id(cpu) % spapr->vsmt == 0; 128 } 129 130 static bool pre_2_10_vmstate_dummy_icp_needed(void *opaque) 131 { 132 /* Dummy entries correspond to unused ICPState objects in older QEMUs, 133 * and newer QEMUs don't even have them. In both cases, we don't want 134 * to send anything on the wire. 135 */ 136 return false; 137 } 138 139 static const VMStateDescription pre_2_10_vmstate_dummy_icp = { 140 .name = "icp/server", 141 .version_id = 1, 142 .minimum_version_id = 1, 143 .needed = pre_2_10_vmstate_dummy_icp_needed, 144 .fields = (VMStateField[]) { 145 VMSTATE_UNUSED(4), /* uint32_t xirr */ 146 VMSTATE_UNUSED(1), /* uint8_t pending_priority */ 147 VMSTATE_UNUSED(1), /* uint8_t mfrr */ 148 VMSTATE_END_OF_LIST() 149 }, 150 }; 151 152 static void pre_2_10_vmstate_register_dummy_icp(int i) 153 { 154 vmstate_register(NULL, i, &pre_2_10_vmstate_dummy_icp, 155 (void *)(uintptr_t) i); 156 } 157 158 static void pre_2_10_vmstate_unregister_dummy_icp(int i) 159 { 160 vmstate_unregister(NULL, &pre_2_10_vmstate_dummy_icp, 161 (void *)(uintptr_t) i); 162 } 163 164 int spapr_max_server_number(SpaprMachineState *spapr) 165 { 166 MachineState *ms = MACHINE(spapr); 167 168 assert(spapr->vsmt); 169 return DIV_ROUND_UP(ms->smp.max_cpus * spapr->vsmt, ms->smp.threads); 170 } 171 172 static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, 173 int smt_threads) 174 { 175 int i, ret = 0; 176 uint32_t servers_prop[smt_threads]; 177 uint32_t gservers_prop[smt_threads * 2]; 178 int index = spapr_get_vcpu_id(cpu); 179 180 if (cpu->compat_pvr) { 181 ret = fdt_setprop_cell(fdt, offset, "cpu-version", cpu->compat_pvr); 182 if (ret < 0) { 183 return ret; 184 } 185 } 186 187 /* Build interrupt servers and gservers properties */ 188 for (i = 0; i < smt_threads; i++) { 189 servers_prop[i] = cpu_to_be32(index + i); 190 /* Hack, direct the group queues back to cpu 0 */ 191 gservers_prop[i*2] = cpu_to_be32(index + i); 192 gservers_prop[i*2 + 1] = 0; 193 } 194 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s", 195 servers_prop, sizeof(servers_prop)); 196 if (ret < 0) { 197 return ret; 198 } 199 ret = fdt_setprop(fdt, offset, "ibm,ppc-interrupt-gserver#s", 200 gservers_prop, sizeof(gservers_prop)); 201 202 return ret; 203 } 204 205 static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu) 206 { 207 int index = spapr_get_vcpu_id(cpu); 208 uint32_t associativity[] = {cpu_to_be32(0x5), 209 cpu_to_be32(0x0), 210 cpu_to_be32(0x0), 211 cpu_to_be32(0x0), 212 cpu_to_be32(cpu->node_id), 213 cpu_to_be32(index)}; 214 215 /* Advertise NUMA via ibm,associativity */ 216 return fdt_setprop(fdt, offset, "ibm,associativity", associativity, 217 sizeof(associativity)); 218 } 219 220 /* Populate the "ibm,pa-features" property */ 221 static void spapr_populate_pa_features(SpaprMachineState *spapr, 222 PowerPCCPU *cpu, 223 void *fdt, int offset) 224 { 225 uint8_t pa_features_206[] = { 6, 0, 226 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; 227 uint8_t pa_features_207[] = { 24, 0, 228 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, 229 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 230 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 231 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }; 232 uint8_t pa_features_300[] = { 66, 0, 233 /* 0: MMU|FPU|SLB|RUN|DABR|NX, 1: fri[nzpm]|DABRX|SPRG3|SLB0|PP110 */ 234 /* 2: VPM|DS205|PPR|DS202|DS206, 3: LSD|URG, SSO, 5: LE|CFAR|EB|LSQ */ 235 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, /* 0 - 5 */ 236 /* 6: DS207 */ 237 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, /* 6 - 11 */ 238 /* 16: Vector */ 239 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, /* 12 - 17 */ 240 /* 18: Vec. Scalar, 20: Vec. XOR, 22: HTM */ 241 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 18 - 23 */ 242 /* 24: Ext. Dec, 26: 64 bit ftrs, 28: PM ftrs */ 243 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 24 - 29 */ 244 /* 30: MMR, 32: LE atomic, 34: EBB + ext EBB */ 245 0x80, 0x00, 0x80, 0x00, 0xC0, 0x00, /* 30 - 35 */ 246 /* 36: SPR SO, 38: Copy/Paste, 40: Radix MMU */ 247 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 36 - 41 */ 248 /* 42: PM, 44: PC RA, 46: SC vec'd */ 249 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 42 - 47 */ 250 /* 48: SIMD, 50: QP BFP, 52: String */ 251 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 - 53 */ 252 /* 54: DecFP, 56: DecI, 58: SHA */ 253 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 54 - 59 */ 254 /* 60: NM atomic, 62: RNG */ 255 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 60 - 65 */ 256 }; 257 uint8_t *pa_features = NULL; 258 size_t pa_size; 259 260 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_06, 0, cpu->compat_pvr)) { 261 pa_features = pa_features_206; 262 pa_size = sizeof(pa_features_206); 263 } 264 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_07, 0, cpu->compat_pvr)) { 265 pa_features = pa_features_207; 266 pa_size = sizeof(pa_features_207); 267 } 268 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0, cpu->compat_pvr)) { 269 pa_features = pa_features_300; 270 pa_size = sizeof(pa_features_300); 271 } 272 if (!pa_features) { 273 return; 274 } 275 276 if (ppc_hash64_has(cpu, PPC_HASH64_CI_LARGEPAGE)) { 277 /* 278 * Note: we keep CI large pages off by default because a 64K capable 279 * guest provisioned with large pages might otherwise try to map a qemu 280 * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages 281 * even if that qemu runs on a 4k host. 282 * We dd this bit back here if we are confident this is not an issue 283 */ 284 pa_features[3] |= 0x20; 285 } 286 if ((spapr_get_cap(spapr, SPAPR_CAP_HTM) != 0) && pa_size > 24) { 287 pa_features[24] |= 0x80; /* Transactional memory support */ 288 } 289 if (spapr->cas_pre_isa3_guest && pa_size > 40) { 290 /* Workaround for broken kernels that attempt (guest) radix 291 * mode when they can't handle it, if they see the radix bit set 292 * in pa-features. So hide it from them. */ 293 pa_features[40 + 2] &= ~0x80; /* Radix MMU */ 294 } 295 296 _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); 297 } 298 299 static hwaddr spapr_node0_size(MachineState *machine) 300 { 301 if (machine->numa_state->num_nodes) { 302 int i; 303 for (i = 0; i < machine->numa_state->num_nodes; ++i) { 304 if (machine->numa_state->nodes[i].node_mem) { 305 return MIN(pow2floor(machine->numa_state->nodes[i].node_mem), 306 machine->ram_size); 307 } 308 } 309 } 310 return machine->ram_size; 311 } 312 313 static void add_str(GString *s, const gchar *s1) 314 { 315 g_string_append_len(s, s1, strlen(s1) + 1); 316 } 317 318 static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start, 319 hwaddr size) 320 { 321 uint32_t associativity[] = { 322 cpu_to_be32(0x4), /* length */ 323 cpu_to_be32(0x0), cpu_to_be32(0x0), 324 cpu_to_be32(0x0), cpu_to_be32(nodeid) 325 }; 326 char mem_name[32]; 327 uint64_t mem_reg_property[2]; 328 int off; 329 330 mem_reg_property[0] = cpu_to_be64(start); 331 mem_reg_property[1] = cpu_to_be64(size); 332 333 sprintf(mem_name, "memory@%" HWADDR_PRIx, start); 334 off = fdt_add_subnode(fdt, 0, mem_name); 335 _FDT(off); 336 _FDT((fdt_setprop_string(fdt, off, "device_type", "memory"))); 337 _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property, 338 sizeof(mem_reg_property)))); 339 _FDT((fdt_setprop(fdt, off, "ibm,associativity", associativity, 340 sizeof(associativity)))); 341 return off; 342 } 343 344 static int spapr_populate_memory(SpaprMachineState *spapr, void *fdt) 345 { 346 MachineState *machine = MACHINE(spapr); 347 hwaddr mem_start, node_size; 348 int i, nb_nodes = machine->numa_state->num_nodes; 349 NodeInfo *nodes = machine->numa_state->nodes; 350 351 for (i = 0, mem_start = 0; i < nb_nodes; ++i) { 352 if (!nodes[i].node_mem) { 353 continue; 354 } 355 if (mem_start >= machine->ram_size) { 356 node_size = 0; 357 } else { 358 node_size = nodes[i].node_mem; 359 if (node_size > machine->ram_size - mem_start) { 360 node_size = machine->ram_size - mem_start; 361 } 362 } 363 if (!mem_start) { 364 /* spapr_machine_init() checks for rma_size <= node0_size 365 * already */ 366 spapr_populate_memory_node(fdt, i, 0, spapr->rma_size); 367 mem_start += spapr->rma_size; 368 node_size -= spapr->rma_size; 369 } 370 for ( ; node_size; ) { 371 hwaddr sizetmp = pow2floor(node_size); 372 373 /* mem_start != 0 here */ 374 if (ctzl(mem_start) < ctzl(sizetmp)) { 375 sizetmp = 1ULL << ctzl(mem_start); 376 } 377 378 spapr_populate_memory_node(fdt, i, mem_start, sizetmp); 379 node_size -= sizetmp; 380 mem_start += sizetmp; 381 } 382 } 383 384 return 0; 385 } 386 387 static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, 388 SpaprMachineState *spapr) 389 { 390 MachineState *ms = MACHINE(spapr); 391 PowerPCCPU *cpu = POWERPC_CPU(cs); 392 CPUPPCState *env = &cpu->env; 393 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); 394 int index = spapr_get_vcpu_id(cpu); 395 uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 396 0xffffffff, 0xffffffff}; 397 uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() 398 : SPAPR_TIMEBASE_FREQ; 399 uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000; 400 uint32_t page_sizes_prop[64]; 401 size_t page_sizes_prop_size; 402 unsigned int smp_threads = ms->smp.threads; 403 uint32_t vcpus_per_socket = smp_threads * ms->smp.cores; 404 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 405 int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); 406 SpaprDrc *drc; 407 int drc_index; 408 uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ]; 409 int i; 410 411 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index); 412 if (drc) { 413 drc_index = spapr_drc_index(drc); 414 _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index))); 415 } 416 417 _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); 418 _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); 419 420 _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR]))); 421 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size", 422 env->dcache_line_size))); 423 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size", 424 env->dcache_line_size))); 425 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size", 426 env->icache_line_size))); 427 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size", 428 env->icache_line_size))); 429 430 if (pcc->l1_dcache_size) { 431 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size", 432 pcc->l1_dcache_size))); 433 } else { 434 warn_report("Unknown L1 dcache size for cpu"); 435 } 436 if (pcc->l1_icache_size) { 437 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size", 438 pcc->l1_icache_size))); 439 } else { 440 warn_report("Unknown L1 icache size for cpu"); 441 } 442 443 _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq))); 444 _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq))); 445 _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size))); 446 _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size))); 447 _FDT((fdt_setprop_string(fdt, offset, "status", "okay"))); 448 _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0))); 449 450 if (env->spr_cb[SPR_PURR].oea_read) { 451 _FDT((fdt_setprop_cell(fdt, offset, "ibm,purr", 1))); 452 } 453 if (env->spr_cb[SPR_SPURR].oea_read) { 454 _FDT((fdt_setprop_cell(fdt, offset, "ibm,spurr", 1))); 455 } 456 457 if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) { 458 _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes", 459 segs, sizeof(segs)))); 460 } 461 462 /* Advertise VSX (vector extensions) if available 463 * 1 == VMX / Altivec available 464 * 2 == VSX available 465 * 466 * Only CPUs for which we create core types in spapr_cpu_core.c 467 * are possible, and all of those have VMX */ 468 if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) { 469 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2))); 470 } else { 471 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1))); 472 } 473 474 /* Advertise DFP (Decimal Floating Point) if available 475 * 0 / no property == no DFP 476 * 1 == DFP available */ 477 if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) { 478 _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); 479 } 480 481 page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop, 482 sizeof(page_sizes_prop)); 483 if (page_sizes_prop_size) { 484 _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes", 485 page_sizes_prop, page_sizes_prop_size))); 486 } 487 488 spapr_populate_pa_features(spapr, cpu, fdt, offset); 489 490 _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", 491 cs->cpu_index / vcpus_per_socket))); 492 493 _FDT((fdt_setprop(fdt, offset, "ibm,pft-size", 494 pft_size_prop, sizeof(pft_size_prop)))); 495 496 if (ms->numa_state->num_nodes > 1) { 497 _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu)); 498 } 499 500 _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt)); 501 502 if (pcc->radix_page_info) { 503 for (i = 0; i < pcc->radix_page_info->count; i++) { 504 radix_AP_encodings[i] = 505 cpu_to_be32(pcc->radix_page_info->entries[i]); 506 } 507 _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings", 508 radix_AP_encodings, 509 pcc->radix_page_info->count * 510 sizeof(radix_AP_encodings[0])))); 511 } 512 513 /* 514 * We set this property to let the guest know that it can use the large 515 * decrementer and its width in bits. 516 */ 517 if (spapr_get_cap(spapr, SPAPR_CAP_LARGE_DECREMENTER) != SPAPR_CAP_OFF) 518 _FDT((fdt_setprop_u32(fdt, offset, "ibm,dec-bits", 519 pcc->lrg_decr_bits))); 520 } 521 522 static void spapr_populate_cpus_dt_node(void *fdt, SpaprMachineState *spapr) 523 { 524 CPUState **rev; 525 CPUState *cs; 526 int n_cpus; 527 int cpus_offset; 528 char *nodename; 529 int i; 530 531 cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); 532 _FDT(cpus_offset); 533 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1))); 534 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0))); 535 536 /* 537 * We walk the CPUs in reverse order to ensure that CPU DT nodes 538 * created by fdt_add_subnode() end up in the right order in FDT 539 * for the guest kernel the enumerate the CPUs correctly. 540 * 541 * The CPU list cannot be traversed in reverse order, so we need 542 * to do extra work. 543 */ 544 n_cpus = 0; 545 rev = NULL; 546 CPU_FOREACH(cs) { 547 rev = g_renew(CPUState *, rev, n_cpus + 1); 548 rev[n_cpus++] = cs; 549 } 550 551 for (i = n_cpus - 1; i >= 0; i--) { 552 CPUState *cs = rev[i]; 553 PowerPCCPU *cpu = POWERPC_CPU(cs); 554 int index = spapr_get_vcpu_id(cpu); 555 DeviceClass *dc = DEVICE_GET_CLASS(cs); 556 int offset; 557 558 if (!spapr_is_thread0_in_vcore(spapr, cpu)) { 559 continue; 560 } 561 562 nodename = g_strdup_printf("%s@%x", dc->fw_name, index); 563 offset = fdt_add_subnode(fdt, cpus_offset, nodename); 564 g_free(nodename); 565 _FDT(offset); 566 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 567 } 568 569 g_free(rev); 570 } 571 572 static int spapr_rng_populate_dt(void *fdt) 573 { 574 int node; 575 int ret; 576 577 node = qemu_fdt_add_subnode(fdt, "/ibm,platform-facilities"); 578 if (node <= 0) { 579 return -1; 580 } 581 ret = fdt_setprop_string(fdt, node, "device_type", 582 "ibm,platform-facilities"); 583 ret |= fdt_setprop_cell(fdt, node, "#address-cells", 0x1); 584 ret |= fdt_setprop_cell(fdt, node, "#size-cells", 0x0); 585 586 node = fdt_add_subnode(fdt, node, "ibm,random-v1"); 587 if (node <= 0) { 588 return -1; 589 } 590 ret |= fdt_setprop_string(fdt, node, "compatible", "ibm,random"); 591 592 return ret ? -1 : 0; 593 } 594 595 static uint32_t spapr_pc_dimm_node(MemoryDeviceInfoList *list, ram_addr_t addr) 596 { 597 MemoryDeviceInfoList *info; 598 599 for (info = list; info; info = info->next) { 600 MemoryDeviceInfo *value = info->value; 601 602 if (value && value->type == MEMORY_DEVICE_INFO_KIND_DIMM) { 603 PCDIMMDeviceInfo *pcdimm_info = value->u.dimm.data; 604 605 if (addr >= pcdimm_info->addr && 606 addr < (pcdimm_info->addr + pcdimm_info->size)) { 607 return pcdimm_info->node; 608 } 609 } 610 } 611 612 return -1; 613 } 614 615 struct sPAPRDrconfCellV2 { 616 uint32_t seq_lmbs; 617 uint64_t base_addr; 618 uint32_t drc_index; 619 uint32_t aa_index; 620 uint32_t flags; 621 } QEMU_PACKED; 622 623 typedef struct DrconfCellQueue { 624 struct sPAPRDrconfCellV2 cell; 625 QSIMPLEQ_ENTRY(DrconfCellQueue) entry; 626 } DrconfCellQueue; 627 628 static DrconfCellQueue * 629 spapr_get_drconf_cell(uint32_t seq_lmbs, uint64_t base_addr, 630 uint32_t drc_index, uint32_t aa_index, 631 uint32_t flags) 632 { 633 DrconfCellQueue *elem; 634 635 elem = g_malloc0(sizeof(*elem)); 636 elem->cell.seq_lmbs = cpu_to_be32(seq_lmbs); 637 elem->cell.base_addr = cpu_to_be64(base_addr); 638 elem->cell.drc_index = cpu_to_be32(drc_index); 639 elem->cell.aa_index = cpu_to_be32(aa_index); 640 elem->cell.flags = cpu_to_be32(flags); 641 642 return elem; 643 } 644 645 /* ibm,dynamic-memory-v2 */ 646 static int spapr_populate_drmem_v2(SpaprMachineState *spapr, void *fdt, 647 int offset, MemoryDeviceInfoList *dimms) 648 { 649 MachineState *machine = MACHINE(spapr); 650 uint8_t *int_buf, *cur_index; 651 int ret; 652 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 653 uint64_t addr, cur_addr, size; 654 uint32_t nr_boot_lmbs = (machine->device_memory->base / lmb_size); 655 uint64_t mem_end = machine->device_memory->base + 656 memory_region_size(&machine->device_memory->mr); 657 uint32_t node, buf_len, nr_entries = 0; 658 SpaprDrc *drc; 659 DrconfCellQueue *elem, *next; 660 MemoryDeviceInfoList *info; 661 QSIMPLEQ_HEAD(, DrconfCellQueue) drconf_queue 662 = QSIMPLEQ_HEAD_INITIALIZER(drconf_queue); 663 664 /* Entry to cover RAM and the gap area */ 665 elem = spapr_get_drconf_cell(nr_boot_lmbs, 0, 0, -1, 666 SPAPR_LMB_FLAGS_RESERVED | 667 SPAPR_LMB_FLAGS_DRC_INVALID); 668 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 669 nr_entries++; 670 671 cur_addr = machine->device_memory->base; 672 for (info = dimms; info; info = info->next) { 673 PCDIMMDeviceInfo *di = info->value->u.dimm.data; 674 675 addr = di->addr; 676 size = di->size; 677 node = di->node; 678 679 /* 680 * The NVDIMM area is hotpluggable after the NVDIMM is unplugged. The 681 * area is marked hotpluggable in the next iteration for the bigger 682 * chunk including the NVDIMM occupied area. 683 */ 684 if (info->value->type == MEMORY_DEVICE_INFO_KIND_NVDIMM) 685 continue; 686 687 /* Entry for hot-pluggable area */ 688 if (cur_addr < addr) { 689 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 690 g_assert(drc); 691 elem = spapr_get_drconf_cell((addr - cur_addr) / lmb_size, 692 cur_addr, spapr_drc_index(drc), -1, 0); 693 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 694 nr_entries++; 695 } 696 697 /* Entry for DIMM */ 698 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / lmb_size); 699 g_assert(drc); 700 elem = spapr_get_drconf_cell(size / lmb_size, addr, 701 spapr_drc_index(drc), node, 702 SPAPR_LMB_FLAGS_ASSIGNED); 703 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 704 nr_entries++; 705 cur_addr = addr + size; 706 } 707 708 /* Entry for remaining hotpluggable area */ 709 if (cur_addr < mem_end) { 710 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 711 g_assert(drc); 712 elem = spapr_get_drconf_cell((mem_end - cur_addr) / lmb_size, 713 cur_addr, spapr_drc_index(drc), -1, 0); 714 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 715 nr_entries++; 716 } 717 718 buf_len = nr_entries * sizeof(struct sPAPRDrconfCellV2) + sizeof(uint32_t); 719 int_buf = cur_index = g_malloc0(buf_len); 720 *(uint32_t *)int_buf = cpu_to_be32(nr_entries); 721 cur_index += sizeof(nr_entries); 722 723 QSIMPLEQ_FOREACH_SAFE(elem, &drconf_queue, entry, next) { 724 memcpy(cur_index, &elem->cell, sizeof(elem->cell)); 725 cur_index += sizeof(elem->cell); 726 QSIMPLEQ_REMOVE(&drconf_queue, elem, DrconfCellQueue, entry); 727 g_free(elem); 728 } 729 730 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory-v2", int_buf, buf_len); 731 g_free(int_buf); 732 if (ret < 0) { 733 return -1; 734 } 735 return 0; 736 } 737 738 /* ibm,dynamic-memory */ 739 static int spapr_populate_drmem_v1(SpaprMachineState *spapr, void *fdt, 740 int offset, MemoryDeviceInfoList *dimms) 741 { 742 MachineState *machine = MACHINE(spapr); 743 int i, ret; 744 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 745 uint32_t device_lmb_start = machine->device_memory->base / lmb_size; 746 uint32_t nr_lmbs = (machine->device_memory->base + 747 memory_region_size(&machine->device_memory->mr)) / 748 lmb_size; 749 uint32_t *int_buf, *cur_index, buf_len; 750 751 /* 752 * Allocate enough buffer size to fit in ibm,dynamic-memory 753 */ 754 buf_len = (nr_lmbs * SPAPR_DR_LMB_LIST_ENTRY_SIZE + 1) * sizeof(uint32_t); 755 cur_index = int_buf = g_malloc0(buf_len); 756 int_buf[0] = cpu_to_be32(nr_lmbs); 757 cur_index++; 758 for (i = 0; i < nr_lmbs; i++) { 759 uint64_t addr = i * lmb_size; 760 uint32_t *dynamic_memory = cur_index; 761 762 if (i >= device_lmb_start) { 763 SpaprDrc *drc; 764 765 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, i); 766 g_assert(drc); 767 768 dynamic_memory[0] = cpu_to_be32(addr >> 32); 769 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 770 dynamic_memory[2] = cpu_to_be32(spapr_drc_index(drc)); 771 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 772 dynamic_memory[4] = cpu_to_be32(spapr_pc_dimm_node(dimms, addr)); 773 if (memory_region_present(get_system_memory(), addr)) { 774 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_ASSIGNED); 775 } else { 776 dynamic_memory[5] = cpu_to_be32(0); 777 } 778 } else { 779 /* 780 * LMB information for RMA, boot time RAM and gap b/n RAM and 781 * device memory region -- all these are marked as reserved 782 * and as having no valid DRC. 783 */ 784 dynamic_memory[0] = cpu_to_be32(addr >> 32); 785 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 786 dynamic_memory[2] = cpu_to_be32(0); 787 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 788 dynamic_memory[4] = cpu_to_be32(-1); 789 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_RESERVED | 790 SPAPR_LMB_FLAGS_DRC_INVALID); 791 } 792 793 cur_index += SPAPR_DR_LMB_LIST_ENTRY_SIZE; 794 } 795 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory", int_buf, buf_len); 796 g_free(int_buf); 797 if (ret < 0) { 798 return -1; 799 } 800 return 0; 801 } 802 803 /* 804 * Adds ibm,dynamic-reconfiguration-memory node. 805 * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation 806 * of this device tree node. 807 */ 808 static int spapr_populate_drconf_memory(SpaprMachineState *spapr, void *fdt) 809 { 810 MachineState *machine = MACHINE(spapr); 811 int nb_numa_nodes = machine->numa_state->num_nodes; 812 int ret, i, offset; 813 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 814 uint32_t prop_lmb_size[] = {0, cpu_to_be32(lmb_size)}; 815 uint32_t *int_buf, *cur_index, buf_len; 816 int nr_nodes = nb_numa_nodes ? nb_numa_nodes : 1; 817 MemoryDeviceInfoList *dimms = NULL; 818 819 /* 820 * Don't create the node if there is no device memory 821 */ 822 if (machine->ram_size == machine->maxram_size) { 823 return 0; 824 } 825 826 offset = fdt_add_subnode(fdt, 0, "ibm,dynamic-reconfiguration-memory"); 827 828 ret = fdt_setprop(fdt, offset, "ibm,lmb-size", prop_lmb_size, 829 sizeof(prop_lmb_size)); 830 if (ret < 0) { 831 return ret; 832 } 833 834 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-flags-mask", 0xff); 835 if (ret < 0) { 836 return ret; 837 } 838 839 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-preservation-time", 0x0); 840 if (ret < 0) { 841 return ret; 842 } 843 844 /* ibm,dynamic-memory or ibm,dynamic-memory-v2 */ 845 dimms = qmp_memory_device_list(); 846 if (spapr_ovec_test(spapr->ov5_cas, OV5_DRMEM_V2)) { 847 ret = spapr_populate_drmem_v2(spapr, fdt, offset, dimms); 848 } else { 849 ret = spapr_populate_drmem_v1(spapr, fdt, offset, dimms); 850 } 851 qapi_free_MemoryDeviceInfoList(dimms); 852 853 if (ret < 0) { 854 return ret; 855 } 856 857 /* ibm,associativity-lookup-arrays */ 858 buf_len = (nr_nodes * 4 + 2) * sizeof(uint32_t); 859 cur_index = int_buf = g_malloc0(buf_len); 860 int_buf[0] = cpu_to_be32(nr_nodes); 861 int_buf[1] = cpu_to_be32(4); /* Number of entries per associativity list */ 862 cur_index += 2; 863 for (i = 0; i < nr_nodes; i++) { 864 uint32_t associativity[] = { 865 cpu_to_be32(0x0), 866 cpu_to_be32(0x0), 867 cpu_to_be32(0x0), 868 cpu_to_be32(i) 869 }; 870 memcpy(cur_index, associativity, sizeof(associativity)); 871 cur_index += 4; 872 } 873 ret = fdt_setprop(fdt, offset, "ibm,associativity-lookup-arrays", int_buf, 874 (cur_index - int_buf) * sizeof(uint32_t)); 875 g_free(int_buf); 876 877 return ret; 878 } 879 880 static int spapr_dt_cas_updates(SpaprMachineState *spapr, void *fdt, 881 SpaprOptionVector *ov5_updates) 882 { 883 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 884 int ret = 0, offset; 885 886 /* Generate ibm,dynamic-reconfiguration-memory node if required */ 887 if (spapr_ovec_test(ov5_updates, OV5_DRCONF_MEMORY)) { 888 g_assert(smc->dr_lmb_enabled); 889 ret = spapr_populate_drconf_memory(spapr, fdt); 890 if (ret) { 891 return ret; 892 } 893 } 894 895 offset = fdt_path_offset(fdt, "/chosen"); 896 if (offset < 0) { 897 offset = fdt_add_subnode(fdt, 0, "chosen"); 898 if (offset < 0) { 899 return offset; 900 } 901 } 902 return spapr_ovec_populate_dt(fdt, offset, spapr->ov5_cas, 903 "ibm,architecture-vec-5"); 904 } 905 906 static void spapr_dt_rtas(SpaprMachineState *spapr, void *fdt) 907 { 908 MachineState *ms = MACHINE(spapr); 909 int rtas; 910 GString *hypertas = g_string_sized_new(256); 911 GString *qemu_hypertas = g_string_sized_new(256); 912 uint32_t refpoints[] = { cpu_to_be32(0x4), cpu_to_be32(0x4) }; 913 uint64_t max_device_addr = MACHINE(spapr)->device_memory->base + 914 memory_region_size(&MACHINE(spapr)->device_memory->mr); 915 uint32_t lrdr_capacity[] = { 916 cpu_to_be32(max_device_addr >> 32), 917 cpu_to_be32(max_device_addr & 0xffffffff), 918 0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE), 919 cpu_to_be32(ms->smp.max_cpus / ms->smp.threads), 920 }; 921 uint32_t maxdomain = cpu_to_be32(spapr->gpu_numa_id > 1 ? 1 : 0); 922 uint32_t maxdomains[] = { 923 cpu_to_be32(4), 924 maxdomain, 925 maxdomain, 926 maxdomain, 927 cpu_to_be32(spapr->gpu_numa_id), 928 }; 929 930 _FDT(rtas = fdt_add_subnode(fdt, 0, "rtas")); 931 932 /* hypertas */ 933 add_str(hypertas, "hcall-pft"); 934 add_str(hypertas, "hcall-term"); 935 add_str(hypertas, "hcall-dabr"); 936 add_str(hypertas, "hcall-interrupt"); 937 add_str(hypertas, "hcall-tce"); 938 add_str(hypertas, "hcall-vio"); 939 add_str(hypertas, "hcall-splpar"); 940 add_str(hypertas, "hcall-join"); 941 add_str(hypertas, "hcall-bulk"); 942 add_str(hypertas, "hcall-set-mode"); 943 add_str(hypertas, "hcall-sprg0"); 944 add_str(hypertas, "hcall-copy"); 945 add_str(hypertas, "hcall-debug"); 946 add_str(hypertas, "hcall-vphn"); 947 add_str(qemu_hypertas, "hcall-memop1"); 948 949 if (!kvm_enabled() || kvmppc_spapr_use_multitce()) { 950 add_str(hypertas, "hcall-multi-tce"); 951 } 952 953 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 954 add_str(hypertas, "hcall-hpt-resize"); 955 } 956 957 _FDT(fdt_setprop(fdt, rtas, "ibm,hypertas-functions", 958 hypertas->str, hypertas->len)); 959 g_string_free(hypertas, TRUE); 960 _FDT(fdt_setprop(fdt, rtas, "qemu,hypertas-functions", 961 qemu_hypertas->str, qemu_hypertas->len)); 962 g_string_free(qemu_hypertas, TRUE); 963 964 _FDT(fdt_setprop(fdt, rtas, "ibm,associativity-reference-points", 965 refpoints, sizeof(refpoints))); 966 967 _FDT(fdt_setprop(fdt, rtas, "ibm,max-associativity-domains", 968 maxdomains, sizeof(maxdomains))); 969 970 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max", 971 RTAS_ERROR_LOG_MAX)); 972 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate", 973 RTAS_EVENT_SCAN_RATE)); 974 975 g_assert(msi_nonbroken); 976 _FDT(fdt_setprop(fdt, rtas, "ibm,change-msix-capable", NULL, 0)); 977 978 /* 979 * According to PAPR, rtas ibm,os-term does not guarantee a return 980 * back to the guest cpu. 981 * 982 * While an additional ibm,extended-os-term property indicates 983 * that rtas call return will always occur. Set this property. 984 */ 985 _FDT(fdt_setprop(fdt, rtas, "ibm,extended-os-term", NULL, 0)); 986 987 _FDT(fdt_setprop(fdt, rtas, "ibm,lrdr-capacity", 988 lrdr_capacity, sizeof(lrdr_capacity))); 989 990 spapr_dt_rtas_tokens(fdt, rtas); 991 } 992 993 /* 994 * Prepare ibm,arch-vec-5-platform-support, which indicates the MMU 995 * and the XIVE features that the guest may request and thus the valid 996 * values for bytes 23..26 of option vector 5: 997 */ 998 static void spapr_dt_ov5_platform_support(SpaprMachineState *spapr, void *fdt, 999 int chosen) 1000 { 1001 PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu); 1002 1003 char val[2 * 4] = { 1004 23, 0x00, /* XICS / XIVE mode */ 1005 24, 0x00, /* Hash/Radix, filled in below. */ 1006 25, 0x00, /* Hash options: Segment Tables == no, GTSE == no. */ 1007 26, 0x40, /* Radix options: GTSE == yes. */ 1008 }; 1009 1010 if (spapr->irq->xics && spapr->irq->xive) { 1011 val[1] = SPAPR_OV5_XIVE_BOTH; 1012 } else if (spapr->irq->xive) { 1013 val[1] = SPAPR_OV5_XIVE_EXPLOIT; 1014 } else { 1015 assert(spapr->irq->xics); 1016 val[1] = SPAPR_OV5_XIVE_LEGACY; 1017 } 1018 1019 if (!ppc_check_compat(first_ppc_cpu, CPU_POWERPC_LOGICAL_3_00, 0, 1020 first_ppc_cpu->compat_pvr)) { 1021 /* 1022 * If we're in a pre POWER9 compat mode then the guest should 1023 * do hash and use the legacy interrupt mode 1024 */ 1025 val[1] = SPAPR_OV5_XIVE_LEGACY; /* XICS */ 1026 val[3] = 0x00; /* Hash */ 1027 } else if (kvm_enabled()) { 1028 if (kvmppc_has_cap_mmu_radix() && kvmppc_has_cap_mmu_hash_v3()) { 1029 val[3] = 0x80; /* OV5_MMU_BOTH */ 1030 } else if (kvmppc_has_cap_mmu_radix()) { 1031 val[3] = 0x40; /* OV5_MMU_RADIX_300 */ 1032 } else { 1033 val[3] = 0x00; /* Hash */ 1034 } 1035 } else { 1036 /* V3 MMU supports both hash and radix in tcg (with dynamic switching) */ 1037 val[3] = 0xC0; 1038 } 1039 _FDT(fdt_setprop(fdt, chosen, "ibm,arch-vec-5-platform-support", 1040 val, sizeof(val))); 1041 } 1042 1043 static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt) 1044 { 1045 MachineState *machine = MACHINE(spapr); 1046 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1047 int chosen; 1048 const char *boot_device = machine->boot_order; 1049 char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus); 1050 size_t cb = 0; 1051 char *bootlist = get_boot_devices_list(&cb); 1052 1053 _FDT(chosen = fdt_add_subnode(fdt, 0, "chosen")); 1054 1055 if (machine->kernel_cmdline && machine->kernel_cmdline[0]) { 1056 _FDT(fdt_setprop_string(fdt, chosen, "bootargs", 1057 machine->kernel_cmdline)); 1058 } 1059 if (spapr->initrd_size) { 1060 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start", 1061 spapr->initrd_base)); 1062 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end", 1063 spapr->initrd_base + spapr->initrd_size)); 1064 } 1065 1066 if (spapr->kernel_size) { 1067 uint64_t kprop[2] = { cpu_to_be64(spapr->kernel_addr), 1068 cpu_to_be64(spapr->kernel_size) }; 1069 1070 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel", 1071 &kprop, sizeof(kprop))); 1072 if (spapr->kernel_le) { 1073 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0)); 1074 } 1075 } 1076 if (boot_menu) { 1077 _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu))); 1078 } 1079 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width)); 1080 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height)); 1081 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth)); 1082 1083 if (cb && bootlist) { 1084 int i; 1085 1086 for (i = 0; i < cb; i++) { 1087 if (bootlist[i] == '\n') { 1088 bootlist[i] = ' '; 1089 } 1090 } 1091 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist)); 1092 } 1093 1094 if (boot_device && strlen(boot_device)) { 1095 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device)); 1096 } 1097 1098 if (!spapr->has_graphics && stdout_path) { 1099 /* 1100 * "linux,stdout-path" and "stdout" properties are deprecated by linux 1101 * kernel. New platforms should only use the "stdout-path" property. Set 1102 * the new property and continue using older property to remain 1103 * compatible with the existing firmware. 1104 */ 1105 _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path)); 1106 _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path)); 1107 } 1108 1109 /* We can deal with BAR reallocation just fine, advertise it to the guest */ 1110 if (smc->linux_pci_probe) { 1111 _FDT(fdt_setprop_cell(fdt, chosen, "linux,pci-probe-only", 0)); 1112 } 1113 1114 spapr_dt_ov5_platform_support(spapr, fdt, chosen); 1115 1116 g_free(stdout_path); 1117 g_free(bootlist); 1118 } 1119 1120 static void spapr_dt_hypervisor(SpaprMachineState *spapr, void *fdt) 1121 { 1122 /* The /hypervisor node isn't in PAPR - this is a hack to allow PR 1123 * KVM to work under pHyp with some guest co-operation */ 1124 int hypervisor; 1125 uint8_t hypercall[16]; 1126 1127 _FDT(hypervisor = fdt_add_subnode(fdt, 0, "hypervisor")); 1128 /* indicate KVM hypercall interface */ 1129 _FDT(fdt_setprop_string(fdt, hypervisor, "compatible", "linux,kvm")); 1130 if (kvmppc_has_cap_fixup_hcalls()) { 1131 /* 1132 * Older KVM versions with older guest kernels were broken 1133 * with the magic page, don't allow the guest to map it. 1134 */ 1135 if (!kvmppc_get_hypercall(first_cpu->env_ptr, hypercall, 1136 sizeof(hypercall))) { 1137 _FDT(fdt_setprop(fdt, hypervisor, "hcall-instructions", 1138 hypercall, sizeof(hypercall))); 1139 } 1140 } 1141 } 1142 1143 void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space) 1144 { 1145 MachineState *machine = MACHINE(spapr); 1146 MachineClass *mc = MACHINE_GET_CLASS(machine); 1147 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1148 int ret; 1149 void *fdt; 1150 SpaprPhbState *phb; 1151 char *buf; 1152 1153 fdt = g_malloc0(space); 1154 _FDT((fdt_create_empty_tree(fdt, space))); 1155 1156 /* Root node */ 1157 _FDT(fdt_setprop_string(fdt, 0, "device_type", "chrp")); 1158 _FDT(fdt_setprop_string(fdt, 0, "model", "IBM pSeries (emulated by qemu)")); 1159 _FDT(fdt_setprop_string(fdt, 0, "compatible", "qemu,pseries")); 1160 1161 /* Guest UUID & Name*/ 1162 buf = qemu_uuid_unparse_strdup(&qemu_uuid); 1163 _FDT(fdt_setprop_string(fdt, 0, "vm,uuid", buf)); 1164 if (qemu_uuid_set) { 1165 _FDT(fdt_setprop_string(fdt, 0, "system-id", buf)); 1166 } 1167 g_free(buf); 1168 1169 if (qemu_get_vm_name()) { 1170 _FDT(fdt_setprop_string(fdt, 0, "ibm,partition-name", 1171 qemu_get_vm_name())); 1172 } 1173 1174 /* Host Model & Serial Number */ 1175 if (spapr->host_model) { 1176 _FDT(fdt_setprop_string(fdt, 0, "host-model", spapr->host_model)); 1177 } else if (smc->broken_host_serial_model && kvmppc_get_host_model(&buf)) { 1178 _FDT(fdt_setprop_string(fdt, 0, "host-model", buf)); 1179 g_free(buf); 1180 } 1181 1182 if (spapr->host_serial) { 1183 _FDT(fdt_setprop_string(fdt, 0, "host-serial", spapr->host_serial)); 1184 } else if (smc->broken_host_serial_model && kvmppc_get_host_serial(&buf)) { 1185 _FDT(fdt_setprop_string(fdt, 0, "host-serial", buf)); 1186 g_free(buf); 1187 } 1188 1189 _FDT(fdt_setprop_cell(fdt, 0, "#address-cells", 2)); 1190 _FDT(fdt_setprop_cell(fdt, 0, "#size-cells", 2)); 1191 1192 /* /interrupt controller */ 1193 spapr_irq_dt(spapr, spapr_max_server_number(spapr), fdt, PHANDLE_INTC); 1194 1195 ret = spapr_populate_memory(spapr, fdt); 1196 if (ret < 0) { 1197 error_report("couldn't setup memory nodes in fdt"); 1198 exit(1); 1199 } 1200 1201 /* /vdevice */ 1202 spapr_dt_vdevice(spapr->vio_bus, fdt); 1203 1204 if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) { 1205 ret = spapr_rng_populate_dt(fdt); 1206 if (ret < 0) { 1207 error_report("could not set up rng device in the fdt"); 1208 exit(1); 1209 } 1210 } 1211 1212 QLIST_FOREACH(phb, &spapr->phbs, list) { 1213 ret = spapr_dt_phb(spapr, phb, PHANDLE_INTC, fdt, NULL); 1214 if (ret < 0) { 1215 error_report("couldn't setup PCI devices in fdt"); 1216 exit(1); 1217 } 1218 } 1219 1220 /* cpus */ 1221 spapr_populate_cpus_dt_node(fdt, spapr); 1222 1223 if (smc->dr_lmb_enabled) { 1224 _FDT(spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB)); 1225 } 1226 1227 if (mc->has_hotpluggable_cpus) { 1228 int offset = fdt_path_offset(fdt, "/cpus"); 1229 ret = spapr_dt_drc(fdt, offset, NULL, SPAPR_DR_CONNECTOR_TYPE_CPU); 1230 if (ret < 0) { 1231 error_report("Couldn't set up CPU DR device tree properties"); 1232 exit(1); 1233 } 1234 } 1235 1236 /* /event-sources */ 1237 spapr_dt_events(spapr, fdt); 1238 1239 /* /rtas */ 1240 spapr_dt_rtas(spapr, fdt); 1241 1242 /* /chosen */ 1243 if (reset) { 1244 spapr_dt_chosen(spapr, fdt); 1245 } 1246 1247 /* /hypervisor */ 1248 if (kvm_enabled()) { 1249 spapr_dt_hypervisor(spapr, fdt); 1250 } 1251 1252 /* Build memory reserve map */ 1253 if (reset) { 1254 if (spapr->kernel_size) { 1255 _FDT((fdt_add_mem_rsv(fdt, spapr->kernel_addr, 1256 spapr->kernel_size))); 1257 } 1258 if (spapr->initrd_size) { 1259 _FDT((fdt_add_mem_rsv(fdt, spapr->initrd_base, 1260 spapr->initrd_size))); 1261 } 1262 } 1263 1264 /* ibm,client-architecture-support updates */ 1265 ret = spapr_dt_cas_updates(spapr, fdt, spapr->ov5_cas); 1266 if (ret < 0) { 1267 error_report("couldn't setup CAS properties fdt"); 1268 exit(1); 1269 } 1270 1271 if (smc->dr_phb_enabled) { 1272 ret = spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_PHB); 1273 if (ret < 0) { 1274 error_report("Couldn't set up PHB DR device tree properties"); 1275 exit(1); 1276 } 1277 } 1278 1279 /* NVDIMM devices */ 1280 if (mc->nvdimm_supported) { 1281 spapr_dt_persistent_memory(fdt); 1282 } 1283 1284 return fdt; 1285 } 1286 1287 static uint64_t translate_kernel_address(void *opaque, uint64_t addr) 1288 { 1289 SpaprMachineState *spapr = opaque; 1290 1291 return (addr & 0x0fffffff) + spapr->kernel_addr; 1292 } 1293 1294 static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp, 1295 PowerPCCPU *cpu) 1296 { 1297 CPUPPCState *env = &cpu->env; 1298 1299 /* The TCG path should also be holding the BQL at this point */ 1300 g_assert(qemu_mutex_iothread_locked()); 1301 1302 if (msr_pr) { 1303 hcall_dprintf("Hypercall made with MSR[PR]=1\n"); 1304 env->gpr[3] = H_PRIVILEGE; 1305 } else { 1306 env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]); 1307 } 1308 } 1309 1310 struct LPCRSyncState { 1311 target_ulong value; 1312 target_ulong mask; 1313 }; 1314 1315 static void do_lpcr_sync(CPUState *cs, run_on_cpu_data arg) 1316 { 1317 struct LPCRSyncState *s = arg.host_ptr; 1318 PowerPCCPU *cpu = POWERPC_CPU(cs); 1319 CPUPPCState *env = &cpu->env; 1320 target_ulong lpcr; 1321 1322 cpu_synchronize_state(cs); 1323 lpcr = env->spr[SPR_LPCR]; 1324 lpcr &= ~s->mask; 1325 lpcr |= s->value; 1326 ppc_store_lpcr(cpu, lpcr); 1327 } 1328 1329 void spapr_set_all_lpcrs(target_ulong value, target_ulong mask) 1330 { 1331 CPUState *cs; 1332 struct LPCRSyncState s = { 1333 .value = value, 1334 .mask = mask 1335 }; 1336 CPU_FOREACH(cs) { 1337 run_on_cpu(cs, do_lpcr_sync, RUN_ON_CPU_HOST_PTR(&s)); 1338 } 1339 } 1340 1341 static void spapr_get_pate(PPCVirtualHypervisor *vhyp, ppc_v3_pate_t *entry) 1342 { 1343 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1344 1345 /* Copy PATE1:GR into PATE0:HR */ 1346 entry->dw0 = spapr->patb_entry & PATE0_HR; 1347 entry->dw1 = spapr->patb_entry; 1348 } 1349 1350 #define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2)) 1351 #define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID) 1352 #define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY) 1353 #define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY)) 1354 #define DIRTY_HPTE(_hpte) ((*(uint64_t *)(_hpte)) |= tswap64(HPTE64_V_HPTE_DIRTY)) 1355 1356 /* 1357 * Get the fd to access the kernel htab, re-opening it if necessary 1358 */ 1359 static int get_htab_fd(SpaprMachineState *spapr) 1360 { 1361 Error *local_err = NULL; 1362 1363 if (spapr->htab_fd >= 0) { 1364 return spapr->htab_fd; 1365 } 1366 1367 spapr->htab_fd = kvmppc_get_htab_fd(false, 0, &local_err); 1368 if (spapr->htab_fd < 0) { 1369 error_report_err(local_err); 1370 } 1371 1372 return spapr->htab_fd; 1373 } 1374 1375 void close_htab_fd(SpaprMachineState *spapr) 1376 { 1377 if (spapr->htab_fd >= 0) { 1378 close(spapr->htab_fd); 1379 } 1380 spapr->htab_fd = -1; 1381 } 1382 1383 static hwaddr spapr_hpt_mask(PPCVirtualHypervisor *vhyp) 1384 { 1385 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1386 1387 return HTAB_SIZE(spapr) / HASH_PTEG_SIZE_64 - 1; 1388 } 1389 1390 static target_ulong spapr_encode_hpt_for_kvm_pr(PPCVirtualHypervisor *vhyp) 1391 { 1392 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1393 1394 assert(kvm_enabled()); 1395 1396 if (!spapr->htab) { 1397 return 0; 1398 } 1399 1400 return (target_ulong)(uintptr_t)spapr->htab | (spapr->htab_shift - 18); 1401 } 1402 1403 static const ppc_hash_pte64_t *spapr_map_hptes(PPCVirtualHypervisor *vhyp, 1404 hwaddr ptex, int n) 1405 { 1406 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1407 hwaddr pte_offset = ptex * HASH_PTE_SIZE_64; 1408 1409 if (!spapr->htab) { 1410 /* 1411 * HTAB is controlled by KVM. Fetch into temporary buffer 1412 */ 1413 ppc_hash_pte64_t *hptes = g_malloc(n * HASH_PTE_SIZE_64); 1414 kvmppc_read_hptes(hptes, ptex, n); 1415 return hptes; 1416 } 1417 1418 /* 1419 * HTAB is controlled by QEMU. Just point to the internally 1420 * accessible PTEG. 1421 */ 1422 return (const ppc_hash_pte64_t *)(spapr->htab + pte_offset); 1423 } 1424 1425 static void spapr_unmap_hptes(PPCVirtualHypervisor *vhyp, 1426 const ppc_hash_pte64_t *hptes, 1427 hwaddr ptex, int n) 1428 { 1429 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1430 1431 if (!spapr->htab) { 1432 g_free((void *)hptes); 1433 } 1434 1435 /* Nothing to do for qemu managed HPT */ 1436 } 1437 1438 void spapr_store_hpte(PowerPCCPU *cpu, hwaddr ptex, 1439 uint64_t pte0, uint64_t pte1) 1440 { 1441 SpaprMachineState *spapr = SPAPR_MACHINE(cpu->vhyp); 1442 hwaddr offset = ptex * HASH_PTE_SIZE_64; 1443 1444 if (!spapr->htab) { 1445 kvmppc_write_hpte(ptex, pte0, pte1); 1446 } else { 1447 if (pte0 & HPTE64_V_VALID) { 1448 stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); 1449 /* 1450 * When setting valid, we write PTE1 first. This ensures 1451 * proper synchronization with the reading code in 1452 * ppc_hash64_pteg_search() 1453 */ 1454 smp_wmb(); 1455 stq_p(spapr->htab + offset, pte0); 1456 } else { 1457 stq_p(spapr->htab + offset, pte0); 1458 /* 1459 * When clearing it we set PTE0 first. This ensures proper 1460 * synchronization with the reading code in 1461 * ppc_hash64_pteg_search() 1462 */ 1463 smp_wmb(); 1464 stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); 1465 } 1466 } 1467 } 1468 1469 static void spapr_hpte_set_c(PPCVirtualHypervisor *vhyp, hwaddr ptex, 1470 uint64_t pte1) 1471 { 1472 hwaddr offset = ptex * HASH_PTE_SIZE_64 + 15; 1473 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1474 1475 if (!spapr->htab) { 1476 /* There should always be a hash table when this is called */ 1477 error_report("spapr_hpte_set_c called with no hash table !"); 1478 return; 1479 } 1480 1481 /* The HW performs a non-atomic byte update */ 1482 stb_p(spapr->htab + offset, (pte1 & 0xff) | 0x80); 1483 } 1484 1485 static void spapr_hpte_set_r(PPCVirtualHypervisor *vhyp, hwaddr ptex, 1486 uint64_t pte1) 1487 { 1488 hwaddr offset = ptex * HASH_PTE_SIZE_64 + 14; 1489 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1490 1491 if (!spapr->htab) { 1492 /* There should always be a hash table when this is called */ 1493 error_report("spapr_hpte_set_r called with no hash table !"); 1494 return; 1495 } 1496 1497 /* The HW performs a non-atomic byte update */ 1498 stb_p(spapr->htab + offset, ((pte1 >> 8) & 0xff) | 0x01); 1499 } 1500 1501 int spapr_hpt_shift_for_ramsize(uint64_t ramsize) 1502 { 1503 int shift; 1504 1505 /* We aim for a hash table of size 1/128 the size of RAM (rounded 1506 * up). The PAPR recommendation is actually 1/64 of RAM size, but 1507 * that's much more than is needed for Linux guests */ 1508 shift = ctz64(pow2ceil(ramsize)) - 7; 1509 shift = MAX(shift, 18); /* Minimum architected size */ 1510 shift = MIN(shift, 46); /* Maximum architected size */ 1511 return shift; 1512 } 1513 1514 void spapr_free_hpt(SpaprMachineState *spapr) 1515 { 1516 g_free(spapr->htab); 1517 spapr->htab = NULL; 1518 spapr->htab_shift = 0; 1519 close_htab_fd(spapr); 1520 } 1521 1522 void spapr_reallocate_hpt(SpaprMachineState *spapr, int shift, 1523 Error **errp) 1524 { 1525 long rc; 1526 1527 /* Clean up any HPT info from a previous boot */ 1528 spapr_free_hpt(spapr); 1529 1530 rc = kvmppc_reset_htab(shift); 1531 if (rc < 0) { 1532 /* kernel-side HPT needed, but couldn't allocate one */ 1533 error_setg_errno(errp, errno, 1534 "Failed to allocate KVM HPT of order %d (try smaller maxmem?)", 1535 shift); 1536 /* This is almost certainly fatal, but if the caller really 1537 * wants to carry on with shift == 0, it's welcome to try */ 1538 } else if (rc > 0) { 1539 /* kernel-side HPT allocated */ 1540 if (rc != shift) { 1541 error_setg(errp, 1542 "Requested order %d HPT, but kernel allocated order %ld (try smaller maxmem?)", 1543 shift, rc); 1544 } 1545 1546 spapr->htab_shift = shift; 1547 spapr->htab = NULL; 1548 } else { 1549 /* kernel-side HPT not needed, allocate in userspace instead */ 1550 size_t size = 1ULL << shift; 1551 int i; 1552 1553 spapr->htab = qemu_memalign(size, size); 1554 if (!spapr->htab) { 1555 error_setg_errno(errp, errno, 1556 "Could not allocate HPT of order %d", shift); 1557 return; 1558 } 1559 1560 memset(spapr->htab, 0, size); 1561 spapr->htab_shift = shift; 1562 1563 for (i = 0; i < size / HASH_PTE_SIZE_64; i++) { 1564 DIRTY_HPTE(HPTE(spapr->htab, i)); 1565 } 1566 } 1567 /* We're setting up a hash table, so that means we're not radix */ 1568 spapr->patb_entry = 0; 1569 spapr_set_all_lpcrs(0, LPCR_HR | LPCR_UPRT); 1570 } 1571 1572 void spapr_setup_hpt_and_vrma(SpaprMachineState *spapr) 1573 { 1574 int hpt_shift; 1575 1576 if ((spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) 1577 || (spapr->cas_reboot 1578 && !spapr_ovec_test(spapr->ov5_cas, OV5_HPT_RESIZE))) { 1579 hpt_shift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); 1580 } else { 1581 uint64_t current_ram_size; 1582 1583 current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); 1584 hpt_shift = spapr_hpt_shift_for_ramsize(current_ram_size); 1585 } 1586 spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal); 1587 1588 if (spapr->vrma_adjust) { 1589 spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)), 1590 spapr->htab_shift); 1591 } 1592 } 1593 1594 static int spapr_reset_drcs(Object *child, void *opaque) 1595 { 1596 SpaprDrc *drc = 1597 (SpaprDrc *) object_dynamic_cast(child, 1598 TYPE_SPAPR_DR_CONNECTOR); 1599 1600 if (drc) { 1601 spapr_drc_reset(drc); 1602 } 1603 1604 return 0; 1605 } 1606 1607 static void spapr_machine_reset(MachineState *machine) 1608 { 1609 SpaprMachineState *spapr = SPAPR_MACHINE(machine); 1610 PowerPCCPU *first_ppc_cpu; 1611 hwaddr fdt_addr; 1612 void *fdt; 1613 int rc; 1614 1615 kvmppc_svm_off(&error_fatal); 1616 spapr_caps_apply(spapr); 1617 1618 first_ppc_cpu = POWERPC_CPU(first_cpu); 1619 if (kvm_enabled() && kvmppc_has_cap_mmu_radix() && 1620 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 1621 spapr->max_compat_pvr)) { 1622 /* 1623 * If using KVM with radix mode available, VCPUs can be started 1624 * without a HPT because KVM will start them in radix mode. 1625 * Set the GR bit in PATE so that we know there is no HPT. 1626 */ 1627 spapr->patb_entry = PATE1_GR; 1628 spapr_set_all_lpcrs(LPCR_HR | LPCR_UPRT, LPCR_HR | LPCR_UPRT); 1629 } else { 1630 spapr_setup_hpt_and_vrma(spapr); 1631 } 1632 1633 qemu_devices_reset(); 1634 1635 /* 1636 * If this reset wasn't generated by CAS, we should reset our 1637 * negotiated options and start from scratch 1638 */ 1639 if (!spapr->cas_reboot) { 1640 spapr_ovec_cleanup(spapr->ov5_cas); 1641 spapr->ov5_cas = spapr_ovec_new(); 1642 1643 ppc_set_compat_all(spapr->max_compat_pvr, &error_fatal); 1644 } 1645 1646 /* 1647 * This is fixing some of the default configuration of the XIVE 1648 * devices. To be called after the reset of the machine devices. 1649 */ 1650 spapr_irq_reset(spapr, &error_fatal); 1651 1652 /* 1653 * There is no CAS under qtest. Simulate one to please the code that 1654 * depends on spapr->ov5_cas. This is especially needed to test device 1655 * unplug, so we do that before resetting the DRCs. 1656 */ 1657 if (qtest_enabled()) { 1658 spapr_ovec_cleanup(spapr->ov5_cas); 1659 spapr->ov5_cas = spapr_ovec_clone(spapr->ov5); 1660 } 1661 1662 /* DRC reset may cause a device to be unplugged. This will cause troubles 1663 * if this device is used by another device (eg, a running vhost backend 1664 * will crash QEMU if the DIMM holding the vring goes away). To avoid such 1665 * situations, we reset DRCs after all devices have been reset. 1666 */ 1667 object_child_foreach_recursive(object_get_root(), spapr_reset_drcs, NULL); 1668 1669 spapr_clear_pending_events(spapr); 1670 1671 /* 1672 * We place the device tree and RTAS just below either the top of the RMA, 1673 * or just below 2GB, whichever is lower, so that it can be 1674 * processed with 32-bit real mode code if necessary 1675 */ 1676 fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE; 1677 1678 fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE); 1679 1680 rc = fdt_pack(fdt); 1681 1682 /* Should only fail if we've built a corrupted tree */ 1683 assert(rc == 0); 1684 1685 /* Load the fdt */ 1686 qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); 1687 cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); 1688 g_free(spapr->fdt_blob); 1689 spapr->fdt_size = fdt_totalsize(fdt); 1690 spapr->fdt_initial_size = spapr->fdt_size; 1691 spapr->fdt_blob = fdt; 1692 1693 /* Set up the entry state */ 1694 spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, fdt_addr); 1695 first_ppc_cpu->env.gpr[5] = 0; 1696 1697 spapr->cas_reboot = false; 1698 1699 spapr->mc_status = -1; 1700 spapr->guest_machine_check_addr = -1; 1701 1702 /* Signal all vCPUs waiting on this condition */ 1703 qemu_cond_broadcast(&spapr->mc_delivery_cond); 1704 1705 migrate_del_blocker(spapr->fwnmi_migration_blocker); 1706 } 1707 1708 static void spapr_create_nvram(SpaprMachineState *spapr) 1709 { 1710 DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram"); 1711 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 1712 1713 if (dinfo) { 1714 qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo), 1715 &error_fatal); 1716 } 1717 1718 qdev_init_nofail(dev); 1719 1720 spapr->nvram = (struct SpaprNvram *)dev; 1721 } 1722 1723 static void spapr_rtc_create(SpaprMachineState *spapr) 1724 { 1725 object_initialize_child(OBJECT(spapr), "rtc", 1726 &spapr->rtc, sizeof(spapr->rtc), TYPE_SPAPR_RTC, 1727 &error_fatal, NULL); 1728 object_property_set_bool(OBJECT(&spapr->rtc), true, "realized", 1729 &error_fatal); 1730 object_property_add_alias(OBJECT(spapr), "rtc-time", OBJECT(&spapr->rtc), 1731 "date", &error_fatal); 1732 } 1733 1734 /* Returns whether we want to use VGA or not */ 1735 static bool spapr_vga_init(PCIBus *pci_bus, Error **errp) 1736 { 1737 switch (vga_interface_type) { 1738 case VGA_NONE: 1739 return false; 1740 case VGA_DEVICE: 1741 return true; 1742 case VGA_STD: 1743 case VGA_VIRTIO: 1744 case VGA_CIRRUS: 1745 return pci_vga_init(pci_bus) != NULL; 1746 default: 1747 error_setg(errp, 1748 "Unsupported VGA mode, only -vga std or -vga virtio is supported"); 1749 return false; 1750 } 1751 } 1752 1753 static int spapr_pre_load(void *opaque) 1754 { 1755 int rc; 1756 1757 rc = spapr_caps_pre_load(opaque); 1758 if (rc) { 1759 return rc; 1760 } 1761 1762 return 0; 1763 } 1764 1765 static int spapr_post_load(void *opaque, int version_id) 1766 { 1767 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1768 int err = 0; 1769 1770 err = spapr_caps_post_migration(spapr); 1771 if (err) { 1772 return err; 1773 } 1774 1775 /* 1776 * In earlier versions, there was no separate qdev for the PAPR 1777 * RTC, so the RTC offset was stored directly in sPAPREnvironment. 1778 * So when migrating from those versions, poke the incoming offset 1779 * value into the RTC device 1780 */ 1781 if (version_id < 3) { 1782 err = spapr_rtc_import_offset(&spapr->rtc, spapr->rtc_offset); 1783 if (err) { 1784 return err; 1785 } 1786 } 1787 1788 if (kvm_enabled() && spapr->patb_entry) { 1789 PowerPCCPU *cpu = POWERPC_CPU(first_cpu); 1790 bool radix = !!(spapr->patb_entry & PATE1_GR); 1791 bool gtse = !!(cpu->env.spr[SPR_LPCR] & LPCR_GTSE); 1792 1793 /* 1794 * Update LPCR:HR and UPRT as they may not be set properly in 1795 * the stream 1796 */ 1797 spapr_set_all_lpcrs(radix ? (LPCR_HR | LPCR_UPRT) : 0, 1798 LPCR_HR | LPCR_UPRT); 1799 1800 err = kvmppc_configure_v3_mmu(cpu, radix, gtse, spapr->patb_entry); 1801 if (err) { 1802 error_report("Process table config unsupported by the host"); 1803 return -EINVAL; 1804 } 1805 } 1806 1807 err = spapr_irq_post_load(spapr, version_id); 1808 if (err) { 1809 return err; 1810 } 1811 1812 return err; 1813 } 1814 1815 static int spapr_pre_save(void *opaque) 1816 { 1817 int rc; 1818 1819 rc = spapr_caps_pre_save(opaque); 1820 if (rc) { 1821 return rc; 1822 } 1823 1824 return 0; 1825 } 1826 1827 static bool version_before_3(void *opaque, int version_id) 1828 { 1829 return version_id < 3; 1830 } 1831 1832 static bool spapr_pending_events_needed(void *opaque) 1833 { 1834 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1835 return !QTAILQ_EMPTY(&spapr->pending_events); 1836 } 1837 1838 static const VMStateDescription vmstate_spapr_event_entry = { 1839 .name = "spapr_event_log_entry", 1840 .version_id = 1, 1841 .minimum_version_id = 1, 1842 .fields = (VMStateField[]) { 1843 VMSTATE_UINT32(summary, SpaprEventLogEntry), 1844 VMSTATE_UINT32(extended_length, SpaprEventLogEntry), 1845 VMSTATE_VBUFFER_ALLOC_UINT32(extended_log, SpaprEventLogEntry, 0, 1846 NULL, extended_length), 1847 VMSTATE_END_OF_LIST() 1848 }, 1849 }; 1850 1851 static const VMStateDescription vmstate_spapr_pending_events = { 1852 .name = "spapr_pending_events", 1853 .version_id = 1, 1854 .minimum_version_id = 1, 1855 .needed = spapr_pending_events_needed, 1856 .fields = (VMStateField[]) { 1857 VMSTATE_QTAILQ_V(pending_events, SpaprMachineState, 1, 1858 vmstate_spapr_event_entry, SpaprEventLogEntry, next), 1859 VMSTATE_END_OF_LIST() 1860 }, 1861 }; 1862 1863 static bool spapr_ov5_cas_needed(void *opaque) 1864 { 1865 SpaprMachineState *spapr = opaque; 1866 SpaprOptionVector *ov5_mask = spapr_ovec_new(); 1867 bool cas_needed; 1868 1869 /* Prior to the introduction of SpaprOptionVector, we had two option 1870 * vectors we dealt with: OV5_FORM1_AFFINITY, and OV5_DRCONF_MEMORY. 1871 * Both of these options encode machine topology into the device-tree 1872 * in such a way that the now-booted OS should still be able to interact 1873 * appropriately with QEMU regardless of what options were actually 1874 * negotiatied on the source side. 1875 * 1876 * As such, we can avoid migrating the CAS-negotiated options if these 1877 * are the only options available on the current machine/platform. 1878 * Since these are the only options available for pseries-2.7 and 1879 * earlier, this allows us to maintain old->new/new->old migration 1880 * compatibility. 1881 * 1882 * For QEMU 2.8+, there are additional CAS-negotiatable options available 1883 * via default pseries-2.8 machines and explicit command-line parameters. 1884 * Some of these options, like OV5_HP_EVT, *do* require QEMU to be aware 1885 * of the actual CAS-negotiated values to continue working properly. For 1886 * example, availability of memory unplug depends on knowing whether 1887 * OV5_HP_EVT was negotiated via CAS. 1888 * 1889 * Thus, for any cases where the set of available CAS-negotiatable 1890 * options extends beyond OV5_FORM1_AFFINITY and OV5_DRCONF_MEMORY, we 1891 * include the CAS-negotiated options in the migration stream, unless 1892 * if they affect boot time behaviour only. 1893 */ 1894 spapr_ovec_set(ov5_mask, OV5_FORM1_AFFINITY); 1895 spapr_ovec_set(ov5_mask, OV5_DRCONF_MEMORY); 1896 spapr_ovec_set(ov5_mask, OV5_DRMEM_V2); 1897 1898 /* We need extra information if we have any bits outside the mask 1899 * defined above */ 1900 cas_needed = !spapr_ovec_subset(spapr->ov5, ov5_mask); 1901 1902 spapr_ovec_cleanup(ov5_mask); 1903 1904 return cas_needed; 1905 } 1906 1907 static const VMStateDescription vmstate_spapr_ov5_cas = { 1908 .name = "spapr_option_vector_ov5_cas", 1909 .version_id = 1, 1910 .minimum_version_id = 1, 1911 .needed = spapr_ov5_cas_needed, 1912 .fields = (VMStateField[]) { 1913 VMSTATE_STRUCT_POINTER_V(ov5_cas, SpaprMachineState, 1, 1914 vmstate_spapr_ovec, SpaprOptionVector), 1915 VMSTATE_END_OF_LIST() 1916 }, 1917 }; 1918 1919 static bool spapr_patb_entry_needed(void *opaque) 1920 { 1921 SpaprMachineState *spapr = opaque; 1922 1923 return !!spapr->patb_entry; 1924 } 1925 1926 static const VMStateDescription vmstate_spapr_patb_entry = { 1927 .name = "spapr_patb_entry", 1928 .version_id = 1, 1929 .minimum_version_id = 1, 1930 .needed = spapr_patb_entry_needed, 1931 .fields = (VMStateField[]) { 1932 VMSTATE_UINT64(patb_entry, SpaprMachineState), 1933 VMSTATE_END_OF_LIST() 1934 }, 1935 }; 1936 1937 static bool spapr_irq_map_needed(void *opaque) 1938 { 1939 SpaprMachineState *spapr = opaque; 1940 1941 return spapr->irq_map && !bitmap_empty(spapr->irq_map, spapr->irq_map_nr); 1942 } 1943 1944 static const VMStateDescription vmstate_spapr_irq_map = { 1945 .name = "spapr_irq_map", 1946 .version_id = 1, 1947 .minimum_version_id = 1, 1948 .needed = spapr_irq_map_needed, 1949 .fields = (VMStateField[]) { 1950 VMSTATE_BITMAP(irq_map, SpaprMachineState, 0, irq_map_nr), 1951 VMSTATE_END_OF_LIST() 1952 }, 1953 }; 1954 1955 static bool spapr_dtb_needed(void *opaque) 1956 { 1957 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(opaque); 1958 1959 return smc->update_dt_enabled; 1960 } 1961 1962 static int spapr_dtb_pre_load(void *opaque) 1963 { 1964 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1965 1966 g_free(spapr->fdt_blob); 1967 spapr->fdt_blob = NULL; 1968 spapr->fdt_size = 0; 1969 1970 return 0; 1971 } 1972 1973 static const VMStateDescription vmstate_spapr_dtb = { 1974 .name = "spapr_dtb", 1975 .version_id = 1, 1976 .minimum_version_id = 1, 1977 .needed = spapr_dtb_needed, 1978 .pre_load = spapr_dtb_pre_load, 1979 .fields = (VMStateField[]) { 1980 VMSTATE_UINT32(fdt_initial_size, SpaprMachineState), 1981 VMSTATE_UINT32(fdt_size, SpaprMachineState), 1982 VMSTATE_VBUFFER_ALLOC_UINT32(fdt_blob, SpaprMachineState, 0, NULL, 1983 fdt_size), 1984 VMSTATE_END_OF_LIST() 1985 }, 1986 }; 1987 1988 static bool spapr_fwnmi_needed(void *opaque) 1989 { 1990 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1991 1992 return spapr->guest_machine_check_addr != -1; 1993 } 1994 1995 static int spapr_fwnmi_pre_save(void *opaque) 1996 { 1997 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1998 1999 /* 2000 * Check if machine check handling is in progress and print a 2001 * warning message. 2002 */ 2003 if (spapr->mc_status != -1) { 2004 warn_report("A machine check is being handled during migration. The" 2005 "handler may run and log hardware error on the destination"); 2006 } 2007 2008 return 0; 2009 } 2010 2011 static const VMStateDescription vmstate_spapr_machine_check = { 2012 .name = "spapr_machine_check", 2013 .version_id = 1, 2014 .minimum_version_id = 1, 2015 .needed = spapr_fwnmi_needed, 2016 .pre_save = spapr_fwnmi_pre_save, 2017 .fields = (VMStateField[]) { 2018 VMSTATE_UINT64(guest_machine_check_addr, SpaprMachineState), 2019 VMSTATE_INT32(mc_status, SpaprMachineState), 2020 VMSTATE_END_OF_LIST() 2021 }, 2022 }; 2023 2024 static const VMStateDescription vmstate_spapr = { 2025 .name = "spapr", 2026 .version_id = 3, 2027 .minimum_version_id = 1, 2028 .pre_load = spapr_pre_load, 2029 .post_load = spapr_post_load, 2030 .pre_save = spapr_pre_save, 2031 .fields = (VMStateField[]) { 2032 /* used to be @next_irq */ 2033 VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), 2034 2035 /* RTC offset */ 2036 VMSTATE_UINT64_TEST(rtc_offset, SpaprMachineState, version_before_3), 2037 2038 VMSTATE_PPC_TIMEBASE_V(tb, SpaprMachineState, 2), 2039 VMSTATE_END_OF_LIST() 2040 }, 2041 .subsections = (const VMStateDescription*[]) { 2042 &vmstate_spapr_ov5_cas, 2043 &vmstate_spapr_patb_entry, 2044 &vmstate_spapr_pending_events, 2045 &vmstate_spapr_cap_htm, 2046 &vmstate_spapr_cap_vsx, 2047 &vmstate_spapr_cap_dfp, 2048 &vmstate_spapr_cap_cfpc, 2049 &vmstate_spapr_cap_sbbc, 2050 &vmstate_spapr_cap_ibs, 2051 &vmstate_spapr_cap_hpt_maxpagesize, 2052 &vmstate_spapr_irq_map, 2053 &vmstate_spapr_cap_nested_kvm_hv, 2054 &vmstate_spapr_dtb, 2055 &vmstate_spapr_cap_large_decr, 2056 &vmstate_spapr_cap_ccf_assist, 2057 &vmstate_spapr_cap_fwnmi, 2058 &vmstate_spapr_machine_check, 2059 NULL 2060 } 2061 }; 2062 2063 static int htab_save_setup(QEMUFile *f, void *opaque) 2064 { 2065 SpaprMachineState *spapr = opaque; 2066 2067 /* "Iteration" header */ 2068 if (!spapr->htab_shift) { 2069 qemu_put_be32(f, -1); 2070 } else { 2071 qemu_put_be32(f, spapr->htab_shift); 2072 } 2073 2074 if (spapr->htab) { 2075 spapr->htab_save_index = 0; 2076 spapr->htab_first_pass = true; 2077 } else { 2078 if (spapr->htab_shift) { 2079 assert(kvm_enabled()); 2080 } 2081 } 2082 2083 2084 return 0; 2085 } 2086 2087 static void htab_save_chunk(QEMUFile *f, SpaprMachineState *spapr, 2088 int chunkstart, int n_valid, int n_invalid) 2089 { 2090 qemu_put_be32(f, chunkstart); 2091 qemu_put_be16(f, n_valid); 2092 qemu_put_be16(f, n_invalid); 2093 qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), 2094 HASH_PTE_SIZE_64 * n_valid); 2095 } 2096 2097 static void htab_save_end_marker(QEMUFile *f) 2098 { 2099 qemu_put_be32(f, 0); 2100 qemu_put_be16(f, 0); 2101 qemu_put_be16(f, 0); 2102 } 2103 2104 static void htab_save_first_pass(QEMUFile *f, SpaprMachineState *spapr, 2105 int64_t max_ns) 2106 { 2107 bool has_timeout = max_ns != -1; 2108 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 2109 int index = spapr->htab_save_index; 2110 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 2111 2112 assert(spapr->htab_first_pass); 2113 2114 do { 2115 int chunkstart; 2116 2117 /* Consume invalid HPTEs */ 2118 while ((index < htabslots) 2119 && !HPTE_VALID(HPTE(spapr->htab, index))) { 2120 CLEAN_HPTE(HPTE(spapr->htab, index)); 2121 index++; 2122 } 2123 2124 /* Consume valid HPTEs */ 2125 chunkstart = index; 2126 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 2127 && HPTE_VALID(HPTE(spapr->htab, index))) { 2128 CLEAN_HPTE(HPTE(spapr->htab, index)); 2129 index++; 2130 } 2131 2132 if (index > chunkstart) { 2133 int n_valid = index - chunkstart; 2134 2135 htab_save_chunk(f, spapr, chunkstart, n_valid, 0); 2136 2137 if (has_timeout && 2138 (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 2139 break; 2140 } 2141 } 2142 } while ((index < htabslots) && !qemu_file_rate_limit(f)); 2143 2144 if (index >= htabslots) { 2145 assert(index == htabslots); 2146 index = 0; 2147 spapr->htab_first_pass = false; 2148 } 2149 spapr->htab_save_index = index; 2150 } 2151 2152 static int htab_save_later_pass(QEMUFile *f, SpaprMachineState *spapr, 2153 int64_t max_ns) 2154 { 2155 bool final = max_ns < 0; 2156 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 2157 int examined = 0, sent = 0; 2158 int index = spapr->htab_save_index; 2159 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 2160 2161 assert(!spapr->htab_first_pass); 2162 2163 do { 2164 int chunkstart, invalidstart; 2165 2166 /* Consume non-dirty HPTEs */ 2167 while ((index < htabslots) 2168 && !HPTE_DIRTY(HPTE(spapr->htab, index))) { 2169 index++; 2170 examined++; 2171 } 2172 2173 chunkstart = index; 2174 /* Consume valid dirty HPTEs */ 2175 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 2176 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2177 && HPTE_VALID(HPTE(spapr->htab, index))) { 2178 CLEAN_HPTE(HPTE(spapr->htab, index)); 2179 index++; 2180 examined++; 2181 } 2182 2183 invalidstart = index; 2184 /* Consume invalid dirty HPTEs */ 2185 while ((index < htabslots) && (index - invalidstart < USHRT_MAX) 2186 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2187 && !HPTE_VALID(HPTE(spapr->htab, index))) { 2188 CLEAN_HPTE(HPTE(spapr->htab, index)); 2189 index++; 2190 examined++; 2191 } 2192 2193 if (index > chunkstart) { 2194 int n_valid = invalidstart - chunkstart; 2195 int n_invalid = index - invalidstart; 2196 2197 htab_save_chunk(f, spapr, chunkstart, n_valid, n_invalid); 2198 sent += index - chunkstart; 2199 2200 if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 2201 break; 2202 } 2203 } 2204 2205 if (examined >= htabslots) { 2206 break; 2207 } 2208 2209 if (index >= htabslots) { 2210 assert(index == htabslots); 2211 index = 0; 2212 } 2213 } while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final)); 2214 2215 if (index >= htabslots) { 2216 assert(index == htabslots); 2217 index = 0; 2218 } 2219 2220 spapr->htab_save_index = index; 2221 2222 return (examined >= htabslots) && (sent == 0) ? 1 : 0; 2223 } 2224 2225 #define MAX_ITERATION_NS 5000000 /* 5 ms */ 2226 #define MAX_KVM_BUF_SIZE 2048 2227 2228 static int htab_save_iterate(QEMUFile *f, void *opaque) 2229 { 2230 SpaprMachineState *spapr = opaque; 2231 int fd; 2232 int rc = 0; 2233 2234 /* Iteration header */ 2235 if (!spapr->htab_shift) { 2236 qemu_put_be32(f, -1); 2237 return 1; 2238 } else { 2239 qemu_put_be32(f, 0); 2240 } 2241 2242 if (!spapr->htab) { 2243 assert(kvm_enabled()); 2244 2245 fd = get_htab_fd(spapr); 2246 if (fd < 0) { 2247 return fd; 2248 } 2249 2250 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, MAX_ITERATION_NS); 2251 if (rc < 0) { 2252 return rc; 2253 } 2254 } else if (spapr->htab_first_pass) { 2255 htab_save_first_pass(f, spapr, MAX_ITERATION_NS); 2256 } else { 2257 rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS); 2258 } 2259 2260 htab_save_end_marker(f); 2261 2262 return rc; 2263 } 2264 2265 static int htab_save_complete(QEMUFile *f, void *opaque) 2266 { 2267 SpaprMachineState *spapr = opaque; 2268 int fd; 2269 2270 /* Iteration header */ 2271 if (!spapr->htab_shift) { 2272 qemu_put_be32(f, -1); 2273 return 0; 2274 } else { 2275 qemu_put_be32(f, 0); 2276 } 2277 2278 if (!spapr->htab) { 2279 int rc; 2280 2281 assert(kvm_enabled()); 2282 2283 fd = get_htab_fd(spapr); 2284 if (fd < 0) { 2285 return fd; 2286 } 2287 2288 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, -1); 2289 if (rc < 0) { 2290 return rc; 2291 } 2292 } else { 2293 if (spapr->htab_first_pass) { 2294 htab_save_first_pass(f, spapr, -1); 2295 } 2296 htab_save_later_pass(f, spapr, -1); 2297 } 2298 2299 /* End marker */ 2300 htab_save_end_marker(f); 2301 2302 return 0; 2303 } 2304 2305 static int htab_load(QEMUFile *f, void *opaque, int version_id) 2306 { 2307 SpaprMachineState *spapr = opaque; 2308 uint32_t section_hdr; 2309 int fd = -1; 2310 Error *local_err = NULL; 2311 2312 if (version_id < 1 || version_id > 1) { 2313 error_report("htab_load() bad version"); 2314 return -EINVAL; 2315 } 2316 2317 section_hdr = qemu_get_be32(f); 2318 2319 if (section_hdr == -1) { 2320 spapr_free_hpt(spapr); 2321 return 0; 2322 } 2323 2324 if (section_hdr) { 2325 /* First section gives the htab size */ 2326 spapr_reallocate_hpt(spapr, section_hdr, &local_err); 2327 if (local_err) { 2328 error_report_err(local_err); 2329 return -EINVAL; 2330 } 2331 return 0; 2332 } 2333 2334 if (!spapr->htab) { 2335 assert(kvm_enabled()); 2336 2337 fd = kvmppc_get_htab_fd(true, 0, &local_err); 2338 if (fd < 0) { 2339 error_report_err(local_err); 2340 return fd; 2341 } 2342 } 2343 2344 while (true) { 2345 uint32_t index; 2346 uint16_t n_valid, n_invalid; 2347 2348 index = qemu_get_be32(f); 2349 n_valid = qemu_get_be16(f); 2350 n_invalid = qemu_get_be16(f); 2351 2352 if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { 2353 /* End of Stream */ 2354 break; 2355 } 2356 2357 if ((index + n_valid + n_invalid) > 2358 (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { 2359 /* Bad index in stream */ 2360 error_report( 2361 "htab_load() bad index %d (%hd+%hd entries) in htab stream (htab_shift=%d)", 2362 index, n_valid, n_invalid, spapr->htab_shift); 2363 return -EINVAL; 2364 } 2365 2366 if (spapr->htab) { 2367 if (n_valid) { 2368 qemu_get_buffer(f, HPTE(spapr->htab, index), 2369 HASH_PTE_SIZE_64 * n_valid); 2370 } 2371 if (n_invalid) { 2372 memset(HPTE(spapr->htab, index + n_valid), 0, 2373 HASH_PTE_SIZE_64 * n_invalid); 2374 } 2375 } else { 2376 int rc; 2377 2378 assert(fd >= 0); 2379 2380 rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); 2381 if (rc < 0) { 2382 return rc; 2383 } 2384 } 2385 } 2386 2387 if (!spapr->htab) { 2388 assert(fd >= 0); 2389 close(fd); 2390 } 2391 2392 return 0; 2393 } 2394 2395 static void htab_save_cleanup(void *opaque) 2396 { 2397 SpaprMachineState *spapr = opaque; 2398 2399 close_htab_fd(spapr); 2400 } 2401 2402 static SaveVMHandlers savevm_htab_handlers = { 2403 .save_setup = htab_save_setup, 2404 .save_live_iterate = htab_save_iterate, 2405 .save_live_complete_precopy = htab_save_complete, 2406 .save_cleanup = htab_save_cleanup, 2407 .load_state = htab_load, 2408 }; 2409 2410 static void spapr_boot_set(void *opaque, const char *boot_device, 2411 Error **errp) 2412 { 2413 MachineState *machine = MACHINE(opaque); 2414 machine->boot_order = g_strdup(boot_device); 2415 } 2416 2417 static void spapr_create_lmb_dr_connectors(SpaprMachineState *spapr) 2418 { 2419 MachineState *machine = MACHINE(spapr); 2420 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 2421 uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; 2422 int i; 2423 2424 for (i = 0; i < nr_lmbs; i++) { 2425 uint64_t addr; 2426 2427 addr = i * lmb_size + machine->device_memory->base; 2428 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, 2429 addr / lmb_size); 2430 } 2431 } 2432 2433 /* 2434 * If RAM size, maxmem size and individual node mem sizes aren't aligned 2435 * to SPAPR_MEMORY_BLOCK_SIZE(256MB), then refuse to start the guest 2436 * since we can't support such unaligned sizes with DRCONF_MEMORY. 2437 */ 2438 static void spapr_validate_node_memory(MachineState *machine, Error **errp) 2439 { 2440 int i; 2441 2442 if (machine->ram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2443 error_setg(errp, "Memory size 0x" RAM_ADDR_FMT 2444 " is not aligned to %" PRIu64 " MiB", 2445 machine->ram_size, 2446 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2447 return; 2448 } 2449 2450 if (machine->maxram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2451 error_setg(errp, "Maximum memory size 0x" RAM_ADDR_FMT 2452 " is not aligned to %" PRIu64 " MiB", 2453 machine->ram_size, 2454 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2455 return; 2456 } 2457 2458 for (i = 0; i < machine->numa_state->num_nodes; i++) { 2459 if (machine->numa_state->nodes[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) { 2460 error_setg(errp, 2461 "Node %d memory size 0x%" PRIx64 2462 " is not aligned to %" PRIu64 " MiB", 2463 i, machine->numa_state->nodes[i].node_mem, 2464 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2465 return; 2466 } 2467 } 2468 } 2469 2470 /* find cpu slot in machine->possible_cpus by core_id */ 2471 static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int *idx) 2472 { 2473 int index = id / ms->smp.threads; 2474 2475 if (index >= ms->possible_cpus->len) { 2476 return NULL; 2477 } 2478 if (idx) { 2479 *idx = index; 2480 } 2481 return &ms->possible_cpus->cpus[index]; 2482 } 2483 2484 static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp) 2485 { 2486 MachineState *ms = MACHINE(spapr); 2487 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 2488 Error *local_err = NULL; 2489 bool vsmt_user = !!spapr->vsmt; 2490 int kvm_smt = kvmppc_smt_threads(); 2491 int ret; 2492 unsigned int smp_threads = ms->smp.threads; 2493 2494 if (!kvm_enabled() && (smp_threads > 1)) { 2495 error_setg(&local_err, "TCG cannot support more than 1 thread/core " 2496 "on a pseries machine"); 2497 goto out; 2498 } 2499 if (!is_power_of_2(smp_threads)) { 2500 error_setg(&local_err, "Cannot support %d threads/core on a pseries " 2501 "machine because it must be a power of 2", smp_threads); 2502 goto out; 2503 } 2504 2505 /* Detemine the VSMT mode to use: */ 2506 if (vsmt_user) { 2507 if (spapr->vsmt < smp_threads) { 2508 error_setg(&local_err, "Cannot support VSMT mode %d" 2509 " because it must be >= threads/core (%d)", 2510 spapr->vsmt, smp_threads); 2511 goto out; 2512 } 2513 /* In this case, spapr->vsmt has been set by the command line */ 2514 } else if (!smc->smp_threads_vsmt) { 2515 /* 2516 * Default VSMT value is tricky, because we need it to be as 2517 * consistent as possible (for migration), but this requires 2518 * changing it for at least some existing cases. We pick 8 as 2519 * the value that we'd get with KVM on POWER8, the 2520 * overwhelmingly common case in production systems. 2521 */ 2522 spapr->vsmt = MAX(8, smp_threads); 2523 } else { 2524 spapr->vsmt = smp_threads; 2525 } 2526 2527 /* KVM: If necessary, set the SMT mode: */ 2528 if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { 2529 ret = kvmppc_set_smt_threads(spapr->vsmt); 2530 if (ret) { 2531 /* Looks like KVM isn't able to change VSMT mode */ 2532 error_setg(&local_err, 2533 "Failed to set KVM's VSMT mode to %d (errno %d)", 2534 spapr->vsmt, ret); 2535 /* We can live with that if the default one is big enough 2536 * for the number of threads, and a submultiple of the one 2537 * we want. In this case we'll waste some vcpu ids, but 2538 * behaviour will be correct */ 2539 if ((kvm_smt >= smp_threads) && ((spapr->vsmt % kvm_smt) == 0)) { 2540 warn_report_err(local_err); 2541 local_err = NULL; 2542 goto out; 2543 } else { 2544 if (!vsmt_user) { 2545 error_append_hint(&local_err, 2546 "On PPC, a VM with %d threads/core" 2547 " on a host with %d threads/core" 2548 " requires the use of VSMT mode %d.\n", 2549 smp_threads, kvm_smt, spapr->vsmt); 2550 } 2551 kvmppc_error_append_smt_possible_hint(&local_err); 2552 goto out; 2553 } 2554 } 2555 } 2556 /* else TCG: nothing to do currently */ 2557 out: 2558 error_propagate(errp, local_err); 2559 } 2560 2561 static void spapr_init_cpus(SpaprMachineState *spapr) 2562 { 2563 MachineState *machine = MACHINE(spapr); 2564 MachineClass *mc = MACHINE_GET_CLASS(machine); 2565 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2566 const char *type = spapr_get_cpu_core_type(machine->cpu_type); 2567 const CPUArchIdList *possible_cpus; 2568 unsigned int smp_cpus = machine->smp.cpus; 2569 unsigned int smp_threads = machine->smp.threads; 2570 unsigned int max_cpus = machine->smp.max_cpus; 2571 int boot_cores_nr = smp_cpus / smp_threads; 2572 int i; 2573 2574 possible_cpus = mc->possible_cpu_arch_ids(machine); 2575 if (mc->has_hotpluggable_cpus) { 2576 if (smp_cpus % smp_threads) { 2577 error_report("smp_cpus (%u) must be multiple of threads (%u)", 2578 smp_cpus, smp_threads); 2579 exit(1); 2580 } 2581 if (max_cpus % smp_threads) { 2582 error_report("max_cpus (%u) must be multiple of threads (%u)", 2583 max_cpus, smp_threads); 2584 exit(1); 2585 } 2586 } else { 2587 if (max_cpus != smp_cpus) { 2588 error_report("This machine version does not support CPU hotplug"); 2589 exit(1); 2590 } 2591 boot_cores_nr = possible_cpus->len; 2592 } 2593 2594 if (smc->pre_2_10_has_unused_icps) { 2595 int i; 2596 2597 for (i = 0; i < spapr_max_server_number(spapr); i++) { 2598 /* Dummy entries get deregistered when real ICPState objects 2599 * are registered during CPU core hotplug. 2600 */ 2601 pre_2_10_vmstate_register_dummy_icp(i); 2602 } 2603 } 2604 2605 for (i = 0; i < possible_cpus->len; i++) { 2606 int core_id = i * smp_threads; 2607 2608 if (mc->has_hotpluggable_cpus) { 2609 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, 2610 spapr_vcpu_id(spapr, core_id)); 2611 } 2612 2613 if (i < boot_cores_nr) { 2614 Object *core = object_new(type); 2615 int nr_threads = smp_threads; 2616 2617 /* Handle the partially filled core for older machine types */ 2618 if ((i + 1) * smp_threads >= smp_cpus) { 2619 nr_threads = smp_cpus - i * smp_threads; 2620 } 2621 2622 object_property_set_int(core, nr_threads, "nr-threads", 2623 &error_fatal); 2624 object_property_set_int(core, core_id, CPU_CORE_PROP_CORE_ID, 2625 &error_fatal); 2626 object_property_set_bool(core, true, "realized", &error_fatal); 2627 2628 object_unref(core); 2629 } 2630 } 2631 } 2632 2633 static PCIHostState *spapr_create_default_phb(void) 2634 { 2635 DeviceState *dev; 2636 2637 dev = qdev_create(NULL, TYPE_SPAPR_PCI_HOST_BRIDGE); 2638 qdev_prop_set_uint32(dev, "index", 0); 2639 qdev_init_nofail(dev); 2640 2641 return PCI_HOST_BRIDGE(dev); 2642 } 2643 2644 /* pSeries LPAR / sPAPR hardware init */ 2645 static void spapr_machine_init(MachineState *machine) 2646 { 2647 SpaprMachineState *spapr = SPAPR_MACHINE(machine); 2648 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2649 MachineClass *mc = MACHINE_GET_CLASS(machine); 2650 const char *kernel_filename = machine->kernel_filename; 2651 const char *initrd_filename = machine->initrd_filename; 2652 PCIHostState *phb; 2653 int i; 2654 MemoryRegion *sysmem = get_system_memory(); 2655 hwaddr node0_size = spapr_node0_size(machine); 2656 long load_limit, fw_size; 2657 char *filename; 2658 Error *resize_hpt_err = NULL; 2659 2660 msi_nonbroken = true; 2661 2662 QLIST_INIT(&spapr->phbs); 2663 QTAILQ_INIT(&spapr->pending_dimm_unplugs); 2664 2665 /* Determine capabilities to run with */ 2666 spapr_caps_init(spapr); 2667 2668 kvmppc_check_papr_resize_hpt(&resize_hpt_err); 2669 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DEFAULT) { 2670 /* 2671 * If the user explicitly requested a mode we should either 2672 * supply it, or fail completely (which we do below). But if 2673 * it's not set explicitly, we reset our mode to something 2674 * that works 2675 */ 2676 if (resize_hpt_err) { 2677 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 2678 error_free(resize_hpt_err); 2679 resize_hpt_err = NULL; 2680 } else { 2681 spapr->resize_hpt = smc->resize_hpt_default; 2682 } 2683 } 2684 2685 assert(spapr->resize_hpt != SPAPR_RESIZE_HPT_DEFAULT); 2686 2687 if ((spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) && resize_hpt_err) { 2688 /* 2689 * User requested HPT resize, but this host can't supply it. Bail out 2690 */ 2691 error_report_err(resize_hpt_err); 2692 exit(1); 2693 } 2694 2695 spapr->rma_size = node0_size; 2696 2697 /* With KVM, we don't actually know whether KVM supports an 2698 * unbounded RMA (PR KVM) or is limited by the hash table size 2699 * (HV KVM using VRMA), so we always assume the latter 2700 * 2701 * In that case, we also limit the initial allocations for RTAS 2702 * etc... to 256M since we have no way to know what the VRMA size 2703 * is going to be as it depends on the size of the hash table 2704 * which isn't determined yet. 2705 */ 2706 if (kvm_enabled()) { 2707 spapr->vrma_adjust = 1; 2708 spapr->rma_size = MIN(spapr->rma_size, 0x10000000); 2709 } 2710 2711 /* Actually we don't support unbounded RMA anymore since we added 2712 * proper emulation of HV mode. The max we can get is 16G which 2713 * also happens to be what we configure for PAPR mode so make sure 2714 * we don't do anything bigger than that 2715 */ 2716 spapr->rma_size = MIN(spapr->rma_size, 0x400000000ull); 2717 2718 if (spapr->rma_size > node0_size) { 2719 error_report("Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")", 2720 spapr->rma_size); 2721 exit(1); 2722 } 2723 2724 /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ 2725 load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; 2726 2727 /* 2728 * VSMT must be set in order to be able to compute VCPU ids, ie to 2729 * call spapr_max_server_number() or spapr_vcpu_id(). 2730 */ 2731 spapr_set_vsmt_mode(spapr, &error_fatal); 2732 2733 /* Set up Interrupt Controller before we create the VCPUs */ 2734 spapr_irq_init(spapr, &error_fatal); 2735 2736 /* Set up containers for ibm,client-architecture-support negotiated options 2737 */ 2738 spapr->ov5 = spapr_ovec_new(); 2739 spapr->ov5_cas = spapr_ovec_new(); 2740 2741 if (smc->dr_lmb_enabled) { 2742 spapr_ovec_set(spapr->ov5, OV5_DRCONF_MEMORY); 2743 spapr_validate_node_memory(machine, &error_fatal); 2744 } 2745 2746 spapr_ovec_set(spapr->ov5, OV5_FORM1_AFFINITY); 2747 2748 /* advertise support for dedicated HP event source to guests */ 2749 if (spapr->use_hotplug_event_source) { 2750 spapr_ovec_set(spapr->ov5, OV5_HP_EVT); 2751 } 2752 2753 /* advertise support for HPT resizing */ 2754 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 2755 spapr_ovec_set(spapr->ov5, OV5_HPT_RESIZE); 2756 } 2757 2758 /* advertise support for ibm,dyamic-memory-v2 */ 2759 spapr_ovec_set(spapr->ov5, OV5_DRMEM_V2); 2760 2761 /* advertise XIVE on POWER9 machines */ 2762 if (spapr->irq->xive) { 2763 spapr_ovec_set(spapr->ov5, OV5_XIVE_EXPLOIT); 2764 } 2765 2766 /* init CPUs */ 2767 spapr_init_cpus(spapr); 2768 2769 /* 2770 * check we don't have a memory-less/cpu-less NUMA node 2771 * Firmware relies on the existing memory/cpu topology to provide the 2772 * NUMA topology to the kernel. 2773 * And the linux kernel needs to know the NUMA topology at start 2774 * to be able to hotplug CPUs later. 2775 */ 2776 if (machine->numa_state->num_nodes) { 2777 for (i = 0; i < machine->numa_state->num_nodes; ++i) { 2778 /* check for memory-less node */ 2779 if (machine->numa_state->nodes[i].node_mem == 0) { 2780 CPUState *cs; 2781 int found = 0; 2782 /* check for cpu-less node */ 2783 CPU_FOREACH(cs) { 2784 PowerPCCPU *cpu = POWERPC_CPU(cs); 2785 if (cpu->node_id == i) { 2786 found = 1; 2787 break; 2788 } 2789 } 2790 /* memory-less and cpu-less node */ 2791 if (!found) { 2792 error_report( 2793 "Memory-less/cpu-less nodes are not supported (node %d)", 2794 i); 2795 exit(1); 2796 } 2797 } 2798 } 2799 2800 } 2801 2802 /* 2803 * NVLink2-connected GPU RAM needs to be placed on a separate NUMA node. 2804 * We assign a new numa ID per GPU in spapr_pci_collect_nvgpu() which is 2805 * called from vPHB reset handler so we initialize the counter here. 2806 * If no NUMA is configured from the QEMU side, we start from 1 as GPU RAM 2807 * must be equally distant from any other node. 2808 * The final value of spapr->gpu_numa_id is going to be written to 2809 * max-associativity-domains in spapr_build_fdt(). 2810 */ 2811 spapr->gpu_numa_id = MAX(1, machine->numa_state->num_nodes); 2812 2813 if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) && 2814 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 2815 spapr->max_compat_pvr)) { 2816 /* KVM and TCG always allow GTSE with radix... */ 2817 spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_GTSE); 2818 } 2819 /* ... but not with hash (currently). */ 2820 2821 if (kvm_enabled()) { 2822 /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ 2823 kvmppc_enable_logical_ci_hcalls(); 2824 kvmppc_enable_set_mode_hcall(); 2825 2826 /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ 2827 kvmppc_enable_clear_ref_mod_hcalls(); 2828 2829 /* Enable H_PAGE_INIT */ 2830 kvmppc_enable_h_page_init(); 2831 } 2832 2833 /* map RAM */ 2834 memory_region_add_subregion(sysmem, 0, machine->ram); 2835 2836 /* always allocate the device memory information */ 2837 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 2838 2839 /* initialize hotplug memory address space */ 2840 if (machine->ram_size < machine->maxram_size) { 2841 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 2842 /* 2843 * Limit the number of hotpluggable memory slots to half the number 2844 * slots that KVM supports, leaving the other half for PCI and other 2845 * devices. However ensure that number of slots doesn't drop below 32. 2846 */ 2847 int max_memslots = kvm_enabled() ? kvm_get_max_memslots() / 2 : 2848 SPAPR_MAX_RAM_SLOTS; 2849 2850 if (max_memslots < SPAPR_MAX_RAM_SLOTS) { 2851 max_memslots = SPAPR_MAX_RAM_SLOTS; 2852 } 2853 if (machine->ram_slots > max_memslots) { 2854 error_report("Specified number of memory slots %" 2855 PRIu64" exceeds max supported %d", 2856 machine->ram_slots, max_memslots); 2857 exit(1); 2858 } 2859 2860 machine->device_memory->base = ROUND_UP(machine->ram_size, 2861 SPAPR_DEVICE_MEM_ALIGN); 2862 memory_region_init(&machine->device_memory->mr, OBJECT(spapr), 2863 "device-memory", device_mem_size); 2864 memory_region_add_subregion(sysmem, machine->device_memory->base, 2865 &machine->device_memory->mr); 2866 } 2867 2868 if (smc->dr_lmb_enabled) { 2869 spapr_create_lmb_dr_connectors(spapr); 2870 } 2871 2872 if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_ON) { 2873 /* Create the error string for live migration blocker */ 2874 error_setg(&spapr->fwnmi_migration_blocker, 2875 "A machine check is being handled during migration. The handler" 2876 "may run and log hardware error on the destination"); 2877 } 2878 2879 if (mc->nvdimm_supported) { 2880 spapr_create_nvdimm_dr_connectors(spapr); 2881 } 2882 2883 /* Set up RTAS event infrastructure */ 2884 spapr_events_init(spapr); 2885 2886 /* Set up the RTC RTAS interfaces */ 2887 spapr_rtc_create(spapr); 2888 2889 /* Set up VIO bus */ 2890 spapr->vio_bus = spapr_vio_bus_init(); 2891 2892 for (i = 0; i < serial_max_hds(); i++) { 2893 if (serial_hd(i)) { 2894 spapr_vty_create(spapr->vio_bus, serial_hd(i)); 2895 } 2896 } 2897 2898 /* We always have at least the nvram device on VIO */ 2899 spapr_create_nvram(spapr); 2900 2901 /* 2902 * Setup hotplug / dynamic-reconfiguration connectors. top-level 2903 * connectors (described in root DT node's "ibm,drc-types" property) 2904 * are pre-initialized here. additional child connectors (such as 2905 * connectors for a PHBs PCI slots) are added as needed during their 2906 * parent's realization. 2907 */ 2908 if (smc->dr_phb_enabled) { 2909 for (i = 0; i < SPAPR_MAX_PHBS; i++) { 2910 spapr_dr_connector_new(OBJECT(machine), TYPE_SPAPR_DRC_PHB, i); 2911 } 2912 } 2913 2914 /* Set up PCI */ 2915 spapr_pci_rtas_init(); 2916 2917 phb = spapr_create_default_phb(); 2918 2919 for (i = 0; i < nb_nics; i++) { 2920 NICInfo *nd = &nd_table[i]; 2921 2922 if (!nd->model) { 2923 nd->model = g_strdup("spapr-vlan"); 2924 } 2925 2926 if (g_str_equal(nd->model, "spapr-vlan") || 2927 g_str_equal(nd->model, "ibmveth")) { 2928 spapr_vlan_create(spapr->vio_bus, nd); 2929 } else { 2930 pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); 2931 } 2932 } 2933 2934 for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { 2935 spapr_vscsi_create(spapr->vio_bus); 2936 } 2937 2938 /* Graphics */ 2939 if (spapr_vga_init(phb->bus, &error_fatal)) { 2940 spapr->has_graphics = true; 2941 machine->usb |= defaults_enabled() && !machine->usb_disabled; 2942 } 2943 2944 if (machine->usb) { 2945 if (smc->use_ohci_by_default) { 2946 pci_create_simple(phb->bus, -1, "pci-ohci"); 2947 } else { 2948 pci_create_simple(phb->bus, -1, "nec-usb-xhci"); 2949 } 2950 2951 if (spapr->has_graphics) { 2952 USBBus *usb_bus = usb_bus_find(-1); 2953 2954 usb_create_simple(usb_bus, "usb-kbd"); 2955 usb_create_simple(usb_bus, "usb-mouse"); 2956 } 2957 } 2958 2959 if (spapr->rma_size < (MIN_RMA_SLOF * MiB)) { 2960 error_report( 2961 "pSeries SLOF firmware requires >= %ldM guest RMA (Real Mode Area memory)", 2962 MIN_RMA_SLOF); 2963 exit(1); 2964 } 2965 2966 if (kernel_filename) { 2967 uint64_t lowaddr = 0; 2968 2969 spapr->kernel_size = load_elf(kernel_filename, NULL, 2970 translate_kernel_address, spapr, 2971 NULL, &lowaddr, NULL, NULL, 1, 2972 PPC_ELF_MACHINE, 0, 0); 2973 if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) { 2974 spapr->kernel_size = load_elf(kernel_filename, NULL, 2975 translate_kernel_address, spapr, NULL, 2976 &lowaddr, NULL, NULL, 0, 2977 PPC_ELF_MACHINE, 2978 0, 0); 2979 spapr->kernel_le = spapr->kernel_size > 0; 2980 } 2981 if (spapr->kernel_size < 0) { 2982 error_report("error loading %s: %s", kernel_filename, 2983 load_elf_strerror(spapr->kernel_size)); 2984 exit(1); 2985 } 2986 2987 /* load initrd */ 2988 if (initrd_filename) { 2989 /* Try to locate the initrd in the gap between the kernel 2990 * and the firmware. Add a bit of space just in case 2991 */ 2992 spapr->initrd_base = (spapr->kernel_addr + spapr->kernel_size 2993 + 0x1ffff) & ~0xffff; 2994 spapr->initrd_size = load_image_targphys(initrd_filename, 2995 spapr->initrd_base, 2996 load_limit 2997 - spapr->initrd_base); 2998 if (spapr->initrd_size < 0) { 2999 error_report("could not load initial ram disk '%s'", 3000 initrd_filename); 3001 exit(1); 3002 } 3003 } 3004 } 3005 3006 if (bios_name == NULL) { 3007 bios_name = FW_FILE_NAME; 3008 } 3009 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 3010 if (!filename) { 3011 error_report("Could not find LPAR firmware '%s'", bios_name); 3012 exit(1); 3013 } 3014 fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); 3015 if (fw_size <= 0) { 3016 error_report("Could not load LPAR firmware '%s'", filename); 3017 exit(1); 3018 } 3019 g_free(filename); 3020 3021 /* FIXME: Should register things through the MachineState's qdev 3022 * interface, this is a legacy from the sPAPREnvironment structure 3023 * which predated MachineState but had a similar function */ 3024 vmstate_register(NULL, 0, &vmstate_spapr, spapr); 3025 register_savevm_live("spapr/htab", VMSTATE_INSTANCE_ID_ANY, 1, 3026 &savevm_htab_handlers, spapr); 3027 3028 qbus_set_hotplug_handler(sysbus_get_default(), OBJECT(machine), 3029 &error_fatal); 3030 3031 qemu_register_boot_set(spapr_boot_set, spapr); 3032 3033 /* 3034 * Nothing needs to be done to resume a suspended guest because 3035 * suspending does not change the machine state, so no need for 3036 * a ->wakeup method. 3037 */ 3038 qemu_register_wakeup_support(); 3039 3040 if (kvm_enabled()) { 3041 /* to stop and start vmclock */ 3042 qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, 3043 &spapr->tb); 3044 3045 kvmppc_spapr_enable_inkernel_multitce(); 3046 } 3047 3048 qemu_cond_init(&spapr->mc_delivery_cond); 3049 } 3050 3051 static int spapr_kvm_type(MachineState *machine, const char *vm_type) 3052 { 3053 if (!vm_type) { 3054 return 0; 3055 } 3056 3057 if (!strcmp(vm_type, "HV")) { 3058 return 1; 3059 } 3060 3061 if (!strcmp(vm_type, "PR")) { 3062 return 2; 3063 } 3064 3065 error_report("Unknown kvm-type specified '%s'", vm_type); 3066 exit(1); 3067 } 3068 3069 /* 3070 * Implementation of an interface to adjust firmware path 3071 * for the bootindex property handling. 3072 */ 3073 static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, 3074 DeviceState *dev) 3075 { 3076 #define CAST(type, obj, name) \ 3077 ((type *)object_dynamic_cast(OBJECT(obj), (name))) 3078 SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); 3079 SpaprPhbState *phb = CAST(SpaprPhbState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); 3080 VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON); 3081 3082 if (d) { 3083 void *spapr = CAST(void, bus->parent, "spapr-vscsi"); 3084 VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); 3085 USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); 3086 3087 if (spapr) { 3088 /* 3089 * Replace "channel@0/disk@0,0" with "disk@8000000000000000": 3090 * In the top 16 bits of the 64-bit LUN, we use SRP luns of the form 3091 * 0x8000 | (target << 8) | (bus << 5) | lun 3092 * (see the "Logical unit addressing format" table in SAM5) 3093 */ 3094 unsigned id = 0x8000 | (d->id << 8) | (d->channel << 5) | d->lun; 3095 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3096 (uint64_t)id << 48); 3097 } else if (virtio) { 3098 /* 3099 * We use SRP luns of the form 01000000 | (target << 8) | lun 3100 * in the top 32 bits of the 64-bit LUN 3101 * Note: the quote above is from SLOF and it is wrong, 3102 * the actual binding is: 3103 * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) 3104 */ 3105 unsigned id = 0x1000000 | (d->id << 16) | d->lun; 3106 if (d->lun >= 256) { 3107 /* Use the LUN "flat space addressing method" */ 3108 id |= 0x4000; 3109 } 3110 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3111 (uint64_t)id << 32); 3112 } else if (usb) { 3113 /* 3114 * We use SRP luns of the form 01000000 | (usb-port << 16) | lun 3115 * in the top 32 bits of the 64-bit LUN 3116 */ 3117 unsigned usb_port = atoi(usb->port->path); 3118 unsigned id = 0x1000000 | (usb_port << 16) | d->lun; 3119 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3120 (uint64_t)id << 32); 3121 } 3122 } 3123 3124 /* 3125 * SLOF probes the USB devices, and if it recognizes that the device is a 3126 * storage device, it changes its name to "storage" instead of "usb-host", 3127 * and additionally adds a child node for the SCSI LUN, so the correct 3128 * boot path in SLOF is something like .../storage@1/disk@xxx" instead. 3129 */ 3130 if (strcmp("usb-host", qdev_fw_name(dev)) == 0) { 3131 USBDevice *usbdev = CAST(USBDevice, dev, TYPE_USB_DEVICE); 3132 if (usb_host_dev_is_scsi_storage(usbdev)) { 3133 return g_strdup_printf("storage@%s/disk", usbdev->port->path); 3134 } 3135 } 3136 3137 if (phb) { 3138 /* Replace "pci" with "pci@800000020000000" */ 3139 return g_strdup_printf("pci@%"PRIX64, phb->buid); 3140 } 3141 3142 if (vsc) { 3143 /* Same logic as virtio above */ 3144 unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun; 3145 return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32); 3146 } 3147 3148 if (g_str_equal("pci-bridge", qdev_fw_name(dev))) { 3149 /* SLOF uses "pci" instead of "pci-bridge" for PCI bridges */ 3150 PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE); 3151 return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn)); 3152 } 3153 3154 return NULL; 3155 } 3156 3157 static char *spapr_get_kvm_type(Object *obj, Error **errp) 3158 { 3159 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3160 3161 return g_strdup(spapr->kvm_type); 3162 } 3163 3164 static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) 3165 { 3166 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3167 3168 g_free(spapr->kvm_type); 3169 spapr->kvm_type = g_strdup(value); 3170 } 3171 3172 static bool spapr_get_modern_hotplug_events(Object *obj, Error **errp) 3173 { 3174 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3175 3176 return spapr->use_hotplug_event_source; 3177 } 3178 3179 static void spapr_set_modern_hotplug_events(Object *obj, bool value, 3180 Error **errp) 3181 { 3182 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3183 3184 spapr->use_hotplug_event_source = value; 3185 } 3186 3187 static bool spapr_get_msix_emulation(Object *obj, Error **errp) 3188 { 3189 return true; 3190 } 3191 3192 static char *spapr_get_resize_hpt(Object *obj, Error **errp) 3193 { 3194 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3195 3196 switch (spapr->resize_hpt) { 3197 case SPAPR_RESIZE_HPT_DEFAULT: 3198 return g_strdup("default"); 3199 case SPAPR_RESIZE_HPT_DISABLED: 3200 return g_strdup("disabled"); 3201 case SPAPR_RESIZE_HPT_ENABLED: 3202 return g_strdup("enabled"); 3203 case SPAPR_RESIZE_HPT_REQUIRED: 3204 return g_strdup("required"); 3205 } 3206 g_assert_not_reached(); 3207 } 3208 3209 static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) 3210 { 3211 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3212 3213 if (strcmp(value, "default") == 0) { 3214 spapr->resize_hpt = SPAPR_RESIZE_HPT_DEFAULT; 3215 } else if (strcmp(value, "disabled") == 0) { 3216 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 3217 } else if (strcmp(value, "enabled") == 0) { 3218 spapr->resize_hpt = SPAPR_RESIZE_HPT_ENABLED; 3219 } else if (strcmp(value, "required") == 0) { 3220 spapr->resize_hpt = SPAPR_RESIZE_HPT_REQUIRED; 3221 } else { 3222 error_setg(errp, "Bad value for \"resize-hpt\" property"); 3223 } 3224 } 3225 3226 static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name, 3227 void *opaque, Error **errp) 3228 { 3229 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3230 } 3231 3232 static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name, 3233 void *opaque, Error **errp) 3234 { 3235 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3236 } 3237 3238 static void spapr_get_kernel_addr(Object *obj, Visitor *v, const char *name, 3239 void *opaque, Error **errp) 3240 { 3241 visit_type_uint64(v, name, (uint64_t *)opaque, errp); 3242 } 3243 3244 static void spapr_set_kernel_addr(Object *obj, Visitor *v, const char *name, 3245 void *opaque, Error **errp) 3246 { 3247 visit_type_uint64(v, name, (uint64_t *)opaque, errp); 3248 } 3249 3250 static char *spapr_get_ic_mode(Object *obj, Error **errp) 3251 { 3252 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3253 3254 if (spapr->irq == &spapr_irq_xics_legacy) { 3255 return g_strdup("legacy"); 3256 } else if (spapr->irq == &spapr_irq_xics) { 3257 return g_strdup("xics"); 3258 } else if (spapr->irq == &spapr_irq_xive) { 3259 return g_strdup("xive"); 3260 } else if (spapr->irq == &spapr_irq_dual) { 3261 return g_strdup("dual"); 3262 } 3263 g_assert_not_reached(); 3264 } 3265 3266 static void spapr_set_ic_mode(Object *obj, const char *value, Error **errp) 3267 { 3268 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3269 3270 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 3271 error_setg(errp, "This machine only uses the legacy XICS backend, don't pass ic-mode"); 3272 return; 3273 } 3274 3275 /* The legacy IRQ backend can not be set */ 3276 if (strcmp(value, "xics") == 0) { 3277 spapr->irq = &spapr_irq_xics; 3278 } else if (strcmp(value, "xive") == 0) { 3279 spapr->irq = &spapr_irq_xive; 3280 } else if (strcmp(value, "dual") == 0) { 3281 spapr->irq = &spapr_irq_dual; 3282 } else { 3283 error_setg(errp, "Bad value for \"ic-mode\" property"); 3284 } 3285 } 3286 3287 static char *spapr_get_host_model(Object *obj, Error **errp) 3288 { 3289 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3290 3291 return g_strdup(spapr->host_model); 3292 } 3293 3294 static void spapr_set_host_model(Object *obj, const char *value, Error **errp) 3295 { 3296 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3297 3298 g_free(spapr->host_model); 3299 spapr->host_model = g_strdup(value); 3300 } 3301 3302 static char *spapr_get_host_serial(Object *obj, Error **errp) 3303 { 3304 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3305 3306 return g_strdup(spapr->host_serial); 3307 } 3308 3309 static void spapr_set_host_serial(Object *obj, const char *value, Error **errp) 3310 { 3311 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3312 3313 g_free(spapr->host_serial); 3314 spapr->host_serial = g_strdup(value); 3315 } 3316 3317 static void spapr_instance_init(Object *obj) 3318 { 3319 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3320 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3321 3322 spapr->htab_fd = -1; 3323 spapr->use_hotplug_event_source = true; 3324 object_property_add_str(obj, "kvm-type", 3325 spapr_get_kvm_type, spapr_set_kvm_type, NULL); 3326 object_property_set_description(obj, "kvm-type", 3327 "Specifies the KVM virtualization mode (HV, PR)", 3328 NULL); 3329 object_property_add_bool(obj, "modern-hotplug-events", 3330 spapr_get_modern_hotplug_events, 3331 spapr_set_modern_hotplug_events, 3332 NULL); 3333 object_property_set_description(obj, "modern-hotplug-events", 3334 "Use dedicated hotplug event mechanism in" 3335 " place of standard EPOW events when possible" 3336 " (required for memory hot-unplug support)", 3337 NULL); 3338 ppc_compat_add_property(obj, "max-cpu-compat", &spapr->max_compat_pvr, 3339 "Maximum permitted CPU compatibility mode", 3340 &error_fatal); 3341 3342 object_property_add_str(obj, "resize-hpt", 3343 spapr_get_resize_hpt, spapr_set_resize_hpt, NULL); 3344 object_property_set_description(obj, "resize-hpt", 3345 "Resizing of the Hash Page Table (enabled, disabled, required)", 3346 NULL); 3347 object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt, 3348 spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort); 3349 object_property_set_description(obj, "vsmt", 3350 "Virtual SMT: KVM behaves as if this were" 3351 " the host's SMT mode", &error_abort); 3352 object_property_add_bool(obj, "vfio-no-msix-emulation", 3353 spapr_get_msix_emulation, NULL, NULL); 3354 3355 object_property_add(obj, "kernel-addr", "uint64", spapr_get_kernel_addr, 3356 spapr_set_kernel_addr, NULL, &spapr->kernel_addr, 3357 &error_abort); 3358 object_property_set_description(obj, "kernel-addr", 3359 stringify(KERNEL_LOAD_ADDR) 3360 " for -kernel is the default", 3361 NULL); 3362 spapr->kernel_addr = KERNEL_LOAD_ADDR; 3363 /* The machine class defines the default interrupt controller mode */ 3364 spapr->irq = smc->irq; 3365 object_property_add_str(obj, "ic-mode", spapr_get_ic_mode, 3366 spapr_set_ic_mode, NULL); 3367 object_property_set_description(obj, "ic-mode", 3368 "Specifies the interrupt controller mode (xics, xive, dual)", 3369 NULL); 3370 3371 object_property_add_str(obj, "host-model", 3372 spapr_get_host_model, spapr_set_host_model, 3373 &error_abort); 3374 object_property_set_description(obj, "host-model", 3375 "Host model to advertise in guest device tree", &error_abort); 3376 object_property_add_str(obj, "host-serial", 3377 spapr_get_host_serial, spapr_set_host_serial, 3378 &error_abort); 3379 object_property_set_description(obj, "host-serial", 3380 "Host serial number to advertise in guest device tree", &error_abort); 3381 } 3382 3383 static void spapr_machine_finalizefn(Object *obj) 3384 { 3385 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3386 3387 g_free(spapr->kvm_type); 3388 } 3389 3390 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg) 3391 { 3392 cpu_synchronize_state(cs); 3393 ppc_cpu_do_system_reset(cs); 3394 } 3395 3396 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) 3397 { 3398 CPUState *cs; 3399 3400 CPU_FOREACH(cs) { 3401 async_run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 3402 } 3403 } 3404 3405 int spapr_lmb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3406 void *fdt, int *fdt_start_offset, Error **errp) 3407 { 3408 uint64_t addr; 3409 uint32_t node; 3410 3411 addr = spapr_drc_index(drc) * SPAPR_MEMORY_BLOCK_SIZE; 3412 node = object_property_get_uint(OBJECT(drc->dev), PC_DIMM_NODE_PROP, 3413 &error_abort); 3414 *fdt_start_offset = spapr_populate_memory_node(fdt, node, addr, 3415 SPAPR_MEMORY_BLOCK_SIZE); 3416 return 0; 3417 } 3418 3419 static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, 3420 bool dedicated_hp_event_source, Error **errp) 3421 { 3422 SpaprDrc *drc; 3423 uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; 3424 int i; 3425 uint64_t addr = addr_start; 3426 bool hotplugged = spapr_drc_hotplugged(dev); 3427 Error *local_err = NULL; 3428 3429 for (i = 0; i < nr_lmbs; i++) { 3430 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3431 addr / SPAPR_MEMORY_BLOCK_SIZE); 3432 g_assert(drc); 3433 3434 spapr_drc_attach(drc, dev, &local_err); 3435 if (local_err) { 3436 while (addr > addr_start) { 3437 addr -= SPAPR_MEMORY_BLOCK_SIZE; 3438 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3439 addr / SPAPR_MEMORY_BLOCK_SIZE); 3440 spapr_drc_detach(drc); 3441 } 3442 error_propagate(errp, local_err); 3443 return; 3444 } 3445 if (!hotplugged) { 3446 spapr_drc_reset(drc); 3447 } 3448 addr += SPAPR_MEMORY_BLOCK_SIZE; 3449 } 3450 /* send hotplug notification to the 3451 * guest only in case of hotplugged memory 3452 */ 3453 if (hotplugged) { 3454 if (dedicated_hp_event_source) { 3455 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3456 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3457 spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3458 nr_lmbs, 3459 spapr_drc_index(drc)); 3460 } else { 3461 spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, 3462 nr_lmbs); 3463 } 3464 } 3465 } 3466 3467 static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3468 Error **errp) 3469 { 3470 Error *local_err = NULL; 3471 SpaprMachineState *ms = SPAPR_MACHINE(hotplug_dev); 3472 PCDIMMDevice *dimm = PC_DIMM(dev); 3473 uint64_t size, addr, slot; 3474 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3475 3476 size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort); 3477 3478 pc_dimm_plug(dimm, MACHINE(ms), &local_err); 3479 if (local_err) { 3480 goto out; 3481 } 3482 3483 if (!is_nvdimm) { 3484 addr = object_property_get_uint(OBJECT(dimm), 3485 PC_DIMM_ADDR_PROP, &local_err); 3486 if (local_err) { 3487 goto out_unplug; 3488 } 3489 spapr_add_lmbs(dev, addr, size, 3490 spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), 3491 &local_err); 3492 } else { 3493 slot = object_property_get_uint(OBJECT(dimm), 3494 PC_DIMM_SLOT_PROP, &local_err); 3495 if (local_err) { 3496 goto out_unplug; 3497 } 3498 spapr_add_nvdimm(dev, slot, &local_err); 3499 } 3500 3501 if (local_err) { 3502 goto out_unplug; 3503 } 3504 3505 return; 3506 3507 out_unplug: 3508 pc_dimm_unplug(dimm, MACHINE(ms)); 3509 out: 3510 error_propagate(errp, local_err); 3511 } 3512 3513 static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3514 Error **errp) 3515 { 3516 const SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(hotplug_dev); 3517 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3518 const MachineClass *mc = MACHINE_CLASS(smc); 3519 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3520 PCDIMMDevice *dimm = PC_DIMM(dev); 3521 Error *local_err = NULL; 3522 uint64_t size; 3523 Object *memdev; 3524 hwaddr pagesize; 3525 3526 if (!smc->dr_lmb_enabled) { 3527 error_setg(errp, "Memory hotplug not supported for this machine"); 3528 return; 3529 } 3530 3531 if (is_nvdimm && !mc->nvdimm_supported) { 3532 error_setg(errp, "NVDIMM hotplug not supported for this machine"); 3533 return; 3534 } 3535 3536 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &local_err); 3537 if (local_err) { 3538 error_propagate(errp, local_err); 3539 return; 3540 } 3541 3542 if (!is_nvdimm && size % SPAPR_MEMORY_BLOCK_SIZE) { 3543 error_setg(errp, "Hotplugged memory size must be a multiple of " 3544 "%" PRIu64 " MB", SPAPR_MEMORY_BLOCK_SIZE / MiB); 3545 return; 3546 } else if (is_nvdimm) { 3547 spapr_nvdimm_validate_opts(NVDIMM(dev), size, &local_err); 3548 if (local_err) { 3549 error_propagate(errp, local_err); 3550 return; 3551 } 3552 } 3553 3554 memdev = object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, 3555 &error_abort); 3556 pagesize = host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); 3557 spapr_check_pagesize(spapr, pagesize, &local_err); 3558 if (local_err) { 3559 error_propagate(errp, local_err); 3560 return; 3561 } 3562 3563 pc_dimm_pre_plug(dimm, MACHINE(hotplug_dev), NULL, errp); 3564 } 3565 3566 struct SpaprDimmState { 3567 PCDIMMDevice *dimm; 3568 uint32_t nr_lmbs; 3569 QTAILQ_ENTRY(SpaprDimmState) next; 3570 }; 3571 3572 static SpaprDimmState *spapr_pending_dimm_unplugs_find(SpaprMachineState *s, 3573 PCDIMMDevice *dimm) 3574 { 3575 SpaprDimmState *dimm_state = NULL; 3576 3577 QTAILQ_FOREACH(dimm_state, &s->pending_dimm_unplugs, next) { 3578 if (dimm_state->dimm == dimm) { 3579 break; 3580 } 3581 } 3582 return dimm_state; 3583 } 3584 3585 static SpaprDimmState *spapr_pending_dimm_unplugs_add(SpaprMachineState *spapr, 3586 uint32_t nr_lmbs, 3587 PCDIMMDevice *dimm) 3588 { 3589 SpaprDimmState *ds = NULL; 3590 3591 /* 3592 * If this request is for a DIMM whose removal had failed earlier 3593 * (due to guest's refusal to remove the LMBs), we would have this 3594 * dimm already in the pending_dimm_unplugs list. In that 3595 * case don't add again. 3596 */ 3597 ds = spapr_pending_dimm_unplugs_find(spapr, dimm); 3598 if (!ds) { 3599 ds = g_malloc0(sizeof(SpaprDimmState)); 3600 ds->nr_lmbs = nr_lmbs; 3601 ds->dimm = dimm; 3602 QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next); 3603 } 3604 return ds; 3605 } 3606 3607 static void spapr_pending_dimm_unplugs_remove(SpaprMachineState *spapr, 3608 SpaprDimmState *dimm_state) 3609 { 3610 QTAILQ_REMOVE(&spapr->pending_dimm_unplugs, dimm_state, next); 3611 g_free(dimm_state); 3612 } 3613 3614 static SpaprDimmState *spapr_recover_pending_dimm_state(SpaprMachineState *ms, 3615 PCDIMMDevice *dimm) 3616 { 3617 SpaprDrc *drc; 3618 uint64_t size = memory_device_get_region_size(MEMORY_DEVICE(dimm), 3619 &error_abort); 3620 uint32_t nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3621 uint32_t avail_lmbs = 0; 3622 uint64_t addr_start, addr; 3623 int i; 3624 3625 addr_start = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3626 &error_abort); 3627 3628 addr = addr_start; 3629 for (i = 0; i < nr_lmbs; i++) { 3630 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3631 addr / SPAPR_MEMORY_BLOCK_SIZE); 3632 g_assert(drc); 3633 if (drc->dev) { 3634 avail_lmbs++; 3635 } 3636 addr += SPAPR_MEMORY_BLOCK_SIZE; 3637 } 3638 3639 return spapr_pending_dimm_unplugs_add(ms, avail_lmbs, dimm); 3640 } 3641 3642 /* Callback to be called during DRC release. */ 3643 void spapr_lmb_release(DeviceState *dev) 3644 { 3645 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3646 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); 3647 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3648 3649 /* This information will get lost if a migration occurs 3650 * during the unplug process. In this case recover it. */ 3651 if (ds == NULL) { 3652 ds = spapr_recover_pending_dimm_state(spapr, PC_DIMM(dev)); 3653 g_assert(ds); 3654 /* The DRC being examined by the caller at least must be counted */ 3655 g_assert(ds->nr_lmbs); 3656 } 3657 3658 if (--ds->nr_lmbs) { 3659 return; 3660 } 3661 3662 /* 3663 * Now that all the LMBs have been removed by the guest, call the 3664 * unplug handler chain. This can never fail. 3665 */ 3666 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3667 object_unparent(OBJECT(dev)); 3668 } 3669 3670 static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3671 { 3672 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3673 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3674 3675 pc_dimm_unplug(PC_DIMM(dev), MACHINE(hotplug_dev)); 3676 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 3677 spapr_pending_dimm_unplugs_remove(spapr, ds); 3678 } 3679 3680 static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev, 3681 DeviceState *dev, Error **errp) 3682 { 3683 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3684 Error *local_err = NULL; 3685 PCDIMMDevice *dimm = PC_DIMM(dev); 3686 uint32_t nr_lmbs; 3687 uint64_t size, addr_start, addr; 3688 int i; 3689 SpaprDrc *drc; 3690 3691 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { 3692 error_setg(&local_err, 3693 "nvdimm device hot unplug is not supported yet."); 3694 goto out; 3695 } 3696 3697 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &error_abort); 3698 nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3699 3700 addr_start = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3701 &local_err); 3702 if (local_err) { 3703 goto out; 3704 } 3705 3706 /* 3707 * An existing pending dimm state for this DIMM means that there is an 3708 * unplug operation in progress, waiting for the spapr_lmb_release 3709 * callback to complete the job (BQL can't cover that far). In this case, 3710 * bail out to avoid detaching DRCs that were already released. 3711 */ 3712 if (spapr_pending_dimm_unplugs_find(spapr, dimm)) { 3713 error_setg(&local_err, 3714 "Memory unplug already in progress for device %s", 3715 dev->id); 3716 goto out; 3717 } 3718 3719 spapr_pending_dimm_unplugs_add(spapr, nr_lmbs, dimm); 3720 3721 addr = addr_start; 3722 for (i = 0; i < nr_lmbs; i++) { 3723 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3724 addr / SPAPR_MEMORY_BLOCK_SIZE); 3725 g_assert(drc); 3726 3727 spapr_drc_detach(drc); 3728 addr += SPAPR_MEMORY_BLOCK_SIZE; 3729 } 3730 3731 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3732 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3733 spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3734 nr_lmbs, spapr_drc_index(drc)); 3735 out: 3736 error_propagate(errp, local_err); 3737 } 3738 3739 /* Callback to be called during DRC release. */ 3740 void spapr_core_release(DeviceState *dev) 3741 { 3742 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3743 3744 /* Call the unplug handler chain. This can never fail. */ 3745 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3746 object_unparent(OBJECT(dev)); 3747 } 3748 3749 static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3750 { 3751 MachineState *ms = MACHINE(hotplug_dev); 3752 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms); 3753 CPUCore *cc = CPU_CORE(dev); 3754 CPUArchId *core_slot = spapr_find_cpu_slot(ms, cc->core_id, NULL); 3755 3756 if (smc->pre_2_10_has_unused_icps) { 3757 SpaprCpuCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); 3758 int i; 3759 3760 for (i = 0; i < cc->nr_threads; i++) { 3761 CPUState *cs = CPU(sc->threads[i]); 3762 3763 pre_2_10_vmstate_register_dummy_icp(cs->cpu_index); 3764 } 3765 } 3766 3767 assert(core_slot); 3768 core_slot->cpu = NULL; 3769 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 3770 } 3771 3772 static 3773 void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, 3774 Error **errp) 3775 { 3776 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3777 int index; 3778 SpaprDrc *drc; 3779 CPUCore *cc = CPU_CORE(dev); 3780 3781 if (!spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index)) { 3782 error_setg(errp, "Unable to find CPU core with core-id: %d", 3783 cc->core_id); 3784 return; 3785 } 3786 if (index == 0) { 3787 error_setg(errp, "Boot CPU core may not be unplugged"); 3788 return; 3789 } 3790 3791 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3792 spapr_vcpu_id(spapr, cc->core_id)); 3793 g_assert(drc); 3794 3795 if (!spapr_drc_unplug_requested(drc)) { 3796 spapr_drc_detach(drc); 3797 spapr_hotplug_req_remove_by_index(drc); 3798 } 3799 } 3800 3801 int spapr_core_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3802 void *fdt, int *fdt_start_offset, Error **errp) 3803 { 3804 SpaprCpuCore *core = SPAPR_CPU_CORE(drc->dev); 3805 CPUState *cs = CPU(core->threads[0]); 3806 PowerPCCPU *cpu = POWERPC_CPU(cs); 3807 DeviceClass *dc = DEVICE_GET_CLASS(cs); 3808 int id = spapr_get_vcpu_id(cpu); 3809 char *nodename; 3810 int offset; 3811 3812 nodename = g_strdup_printf("%s@%x", dc->fw_name, id); 3813 offset = fdt_add_subnode(fdt, 0, nodename); 3814 g_free(nodename); 3815 3816 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 3817 3818 *fdt_start_offset = offset; 3819 return 0; 3820 } 3821 3822 static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3823 Error **errp) 3824 { 3825 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3826 MachineClass *mc = MACHINE_GET_CLASS(spapr); 3827 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 3828 SpaprCpuCore *core = SPAPR_CPU_CORE(OBJECT(dev)); 3829 CPUCore *cc = CPU_CORE(dev); 3830 CPUState *cs; 3831 SpaprDrc *drc; 3832 Error *local_err = NULL; 3833 CPUArchId *core_slot; 3834 int index; 3835 bool hotplugged = spapr_drc_hotplugged(dev); 3836 int i; 3837 3838 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3839 if (!core_slot) { 3840 error_setg(errp, "Unable to find CPU core with core-id: %d", 3841 cc->core_id); 3842 return; 3843 } 3844 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3845 spapr_vcpu_id(spapr, cc->core_id)); 3846 3847 g_assert(drc || !mc->has_hotpluggable_cpus); 3848 3849 if (drc) { 3850 spapr_drc_attach(drc, dev, &local_err); 3851 if (local_err) { 3852 error_propagate(errp, local_err); 3853 return; 3854 } 3855 3856 if (hotplugged) { 3857 /* 3858 * Send hotplug notification interrupt to the guest only 3859 * in case of hotplugged CPUs. 3860 */ 3861 spapr_hotplug_req_add_by_index(drc); 3862 } else { 3863 spapr_drc_reset(drc); 3864 } 3865 } 3866 3867 core_slot->cpu = OBJECT(dev); 3868 3869 if (smc->pre_2_10_has_unused_icps) { 3870 for (i = 0; i < cc->nr_threads; i++) { 3871 cs = CPU(core->threads[i]); 3872 pre_2_10_vmstate_unregister_dummy_icp(cs->cpu_index); 3873 } 3874 } 3875 3876 /* 3877 * Set compatibility mode to match the boot CPU, which was either set 3878 * by the machine reset code or by CAS. 3879 */ 3880 if (hotplugged) { 3881 for (i = 0; i < cc->nr_threads; i++) { 3882 ppc_set_compat(core->threads[i], POWERPC_CPU(first_cpu)->compat_pvr, 3883 &local_err); 3884 if (local_err) { 3885 error_propagate(errp, local_err); 3886 return; 3887 } 3888 } 3889 } 3890 } 3891 3892 static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3893 Error **errp) 3894 { 3895 MachineState *machine = MACHINE(OBJECT(hotplug_dev)); 3896 MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev); 3897 Error *local_err = NULL; 3898 CPUCore *cc = CPU_CORE(dev); 3899 const char *base_core_type = spapr_get_cpu_core_type(machine->cpu_type); 3900 const char *type = object_get_typename(OBJECT(dev)); 3901 CPUArchId *core_slot; 3902 int index; 3903 unsigned int smp_threads = machine->smp.threads; 3904 3905 if (dev->hotplugged && !mc->has_hotpluggable_cpus) { 3906 error_setg(&local_err, "CPU hotplug not supported for this machine"); 3907 goto out; 3908 } 3909 3910 if (strcmp(base_core_type, type)) { 3911 error_setg(&local_err, "CPU core type should be %s", base_core_type); 3912 goto out; 3913 } 3914 3915 if (cc->core_id % smp_threads) { 3916 error_setg(&local_err, "invalid core id %d", cc->core_id); 3917 goto out; 3918 } 3919 3920 /* 3921 * In general we should have homogeneous threads-per-core, but old 3922 * (pre hotplug support) machine types allow the last core to have 3923 * reduced threads as a compatibility hack for when we allowed 3924 * total vcpus not a multiple of threads-per-core. 3925 */ 3926 if (mc->has_hotpluggable_cpus && (cc->nr_threads != smp_threads)) { 3927 error_setg(&local_err, "invalid nr-threads %d, must be %d", 3928 cc->nr_threads, smp_threads); 3929 goto out; 3930 } 3931 3932 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3933 if (!core_slot) { 3934 error_setg(&local_err, "core id %d out of range", cc->core_id); 3935 goto out; 3936 } 3937 3938 if (core_slot->cpu) { 3939 error_setg(&local_err, "core %d already populated", cc->core_id); 3940 goto out; 3941 } 3942 3943 numa_cpu_pre_plug(core_slot, dev, &local_err); 3944 3945 out: 3946 error_propagate(errp, local_err); 3947 } 3948 3949 int spapr_phb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3950 void *fdt, int *fdt_start_offset, Error **errp) 3951 { 3952 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(drc->dev); 3953 int intc_phandle; 3954 3955 intc_phandle = spapr_irq_get_phandle(spapr, spapr->fdt_blob, errp); 3956 if (intc_phandle <= 0) { 3957 return -1; 3958 } 3959 3960 if (spapr_dt_phb(spapr, sphb, intc_phandle, fdt, fdt_start_offset)) { 3961 error_setg(errp, "unable to create FDT node for PHB %d", sphb->index); 3962 return -1; 3963 } 3964 3965 /* generally SLOF creates these, for hotplug it's up to QEMU */ 3966 _FDT(fdt_setprop_string(fdt, *fdt_start_offset, "name", "pci")); 3967 3968 return 0; 3969 } 3970 3971 static void spapr_phb_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3972 Error **errp) 3973 { 3974 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3975 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 3976 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3977 const unsigned windows_supported = spapr_phb_windows_supported(sphb); 3978 3979 if (dev->hotplugged && !smc->dr_phb_enabled) { 3980 error_setg(errp, "PHB hotplug not supported for this machine"); 3981 return; 3982 } 3983 3984 if (sphb->index == (uint32_t)-1) { 3985 error_setg(errp, "\"index\" for PAPR PHB is mandatory"); 3986 return; 3987 } 3988 3989 /* 3990 * This will check that sphb->index doesn't exceed the maximum number of 3991 * PHBs for the current machine type. 3992 */ 3993 smc->phb_placement(spapr, sphb->index, 3994 &sphb->buid, &sphb->io_win_addr, 3995 &sphb->mem_win_addr, &sphb->mem64_win_addr, 3996 windows_supported, sphb->dma_liobn, 3997 &sphb->nv2_gpa_win_addr, &sphb->nv2_atsd_win_addr, 3998 errp); 3999 } 4000 4001 static void spapr_phb_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 4002 Error **errp) 4003 { 4004 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4005 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 4006 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 4007 SpaprDrc *drc; 4008 bool hotplugged = spapr_drc_hotplugged(dev); 4009 Error *local_err = NULL; 4010 4011 if (!smc->dr_phb_enabled) { 4012 return; 4013 } 4014 4015 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 4016 /* hotplug hooks should check it's enabled before getting this far */ 4017 assert(drc); 4018 4019 spapr_drc_attach(drc, DEVICE(dev), &local_err); 4020 if (local_err) { 4021 error_propagate(errp, local_err); 4022 return; 4023 } 4024 4025 if (hotplugged) { 4026 spapr_hotplug_req_add_by_index(drc); 4027 } else { 4028 spapr_drc_reset(drc); 4029 } 4030 } 4031 4032 void spapr_phb_release(DeviceState *dev) 4033 { 4034 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 4035 4036 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 4037 object_unparent(OBJECT(dev)); 4038 } 4039 4040 static void spapr_phb_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 4041 { 4042 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 4043 } 4044 4045 static void spapr_phb_unplug_request(HotplugHandler *hotplug_dev, 4046 DeviceState *dev, Error **errp) 4047 { 4048 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 4049 SpaprDrc *drc; 4050 4051 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 4052 assert(drc); 4053 4054 if (!spapr_drc_unplug_requested(drc)) { 4055 spapr_drc_detach(drc); 4056 spapr_hotplug_req_remove_by_index(drc); 4057 } 4058 } 4059 4060 static void spapr_tpm_proxy_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 4061 Error **errp) 4062 { 4063 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4064 SpaprTpmProxy *tpm_proxy = SPAPR_TPM_PROXY(dev); 4065 4066 if (spapr->tpm_proxy != NULL) { 4067 error_setg(errp, "Only one TPM proxy can be specified for this machine"); 4068 return; 4069 } 4070 4071 spapr->tpm_proxy = tpm_proxy; 4072 } 4073 4074 static void spapr_tpm_proxy_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 4075 { 4076 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4077 4078 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 4079 object_unparent(OBJECT(dev)); 4080 spapr->tpm_proxy = NULL; 4081 } 4082 4083 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, 4084 DeviceState *dev, Error **errp) 4085 { 4086 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4087 spapr_memory_plug(hotplug_dev, dev, errp); 4088 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4089 spapr_core_plug(hotplug_dev, dev, errp); 4090 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4091 spapr_phb_plug(hotplug_dev, dev, errp); 4092 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4093 spapr_tpm_proxy_plug(hotplug_dev, dev, errp); 4094 } 4095 } 4096 4097 static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, 4098 DeviceState *dev, Error **errp) 4099 { 4100 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4101 spapr_memory_unplug(hotplug_dev, dev); 4102 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4103 spapr_core_unplug(hotplug_dev, dev); 4104 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4105 spapr_phb_unplug(hotplug_dev, dev); 4106 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4107 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4108 } 4109 } 4110 4111 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, 4112 DeviceState *dev, Error **errp) 4113 { 4114 SpaprMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4115 MachineClass *mc = MACHINE_GET_CLASS(sms); 4116 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4117 4118 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4119 if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { 4120 spapr_memory_unplug_request(hotplug_dev, dev, errp); 4121 } else { 4122 /* NOTE: this means there is a window after guest reset, prior to 4123 * CAS negotiation, where unplug requests will fail due to the 4124 * capability not being detected yet. This is a bit different than 4125 * the case with PCI unplug, where the events will be queued and 4126 * eventually handled by the guest after boot 4127 */ 4128 error_setg(errp, "Memory hot unplug not supported for this guest"); 4129 } 4130 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4131 if (!mc->has_hotpluggable_cpus) { 4132 error_setg(errp, "CPU hot unplug not supported on this machine"); 4133 return; 4134 } 4135 spapr_core_unplug_request(hotplug_dev, dev, errp); 4136 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4137 if (!smc->dr_phb_enabled) { 4138 error_setg(errp, "PHB hot unplug not supported on this machine"); 4139 return; 4140 } 4141 spapr_phb_unplug_request(hotplug_dev, dev, errp); 4142 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4143 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4144 } 4145 } 4146 4147 static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev, 4148 DeviceState *dev, Error **errp) 4149 { 4150 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4151 spapr_memory_pre_plug(hotplug_dev, dev, errp); 4152 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4153 spapr_core_pre_plug(hotplug_dev, dev, errp); 4154 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4155 spapr_phb_pre_plug(hotplug_dev, dev, errp); 4156 } 4157 } 4158 4159 static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine, 4160 DeviceState *dev) 4161 { 4162 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || 4163 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE) || 4164 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE) || 4165 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4166 return HOTPLUG_HANDLER(machine); 4167 } 4168 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 4169 PCIDevice *pcidev = PCI_DEVICE(dev); 4170 PCIBus *root = pci_device_root_bus(pcidev); 4171 SpaprPhbState *phb = 4172 (SpaprPhbState *)object_dynamic_cast(OBJECT(BUS(root)->parent), 4173 TYPE_SPAPR_PCI_HOST_BRIDGE); 4174 4175 if (phb) { 4176 return HOTPLUG_HANDLER(phb); 4177 } 4178 } 4179 return NULL; 4180 } 4181 4182 static CpuInstanceProperties 4183 spapr_cpu_index_to_props(MachineState *machine, unsigned cpu_index) 4184 { 4185 CPUArchId *core_slot; 4186 MachineClass *mc = MACHINE_GET_CLASS(machine); 4187 4188 /* make sure possible_cpu are intialized */ 4189 mc->possible_cpu_arch_ids(machine); 4190 /* get CPU core slot containing thread that matches cpu_index */ 4191 core_slot = spapr_find_cpu_slot(machine, cpu_index, NULL); 4192 assert(core_slot); 4193 return core_slot->props; 4194 } 4195 4196 static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx) 4197 { 4198 return idx / ms->smp.cores % ms->numa_state->num_nodes; 4199 } 4200 4201 static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine) 4202 { 4203 int i; 4204 unsigned int smp_threads = machine->smp.threads; 4205 unsigned int smp_cpus = machine->smp.cpus; 4206 const char *core_type; 4207 int spapr_max_cores = machine->smp.max_cpus / smp_threads; 4208 MachineClass *mc = MACHINE_GET_CLASS(machine); 4209 4210 if (!mc->has_hotpluggable_cpus) { 4211 spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads; 4212 } 4213 if (machine->possible_cpus) { 4214 assert(machine->possible_cpus->len == spapr_max_cores); 4215 return machine->possible_cpus; 4216 } 4217 4218 core_type = spapr_get_cpu_core_type(machine->cpu_type); 4219 if (!core_type) { 4220 error_report("Unable to find sPAPR CPU Core definition"); 4221 exit(1); 4222 } 4223 4224 machine->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + 4225 sizeof(CPUArchId) * spapr_max_cores); 4226 machine->possible_cpus->len = spapr_max_cores; 4227 for (i = 0; i < machine->possible_cpus->len; i++) { 4228 int core_id = i * smp_threads; 4229 4230 machine->possible_cpus->cpus[i].type = core_type; 4231 machine->possible_cpus->cpus[i].vcpus_count = smp_threads; 4232 machine->possible_cpus->cpus[i].arch_id = core_id; 4233 machine->possible_cpus->cpus[i].props.has_core_id = true; 4234 machine->possible_cpus->cpus[i].props.core_id = core_id; 4235 } 4236 return machine->possible_cpus; 4237 } 4238 4239 static void spapr_phb_placement(SpaprMachineState *spapr, uint32_t index, 4240 uint64_t *buid, hwaddr *pio, 4241 hwaddr *mmio32, hwaddr *mmio64, 4242 unsigned n_dma, uint32_t *liobns, 4243 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4244 { 4245 /* 4246 * New-style PHB window placement. 4247 * 4248 * Goals: Gives large (1TiB), naturally aligned 64-bit MMIO window 4249 * for each PHB, in addition to 2GiB 32-bit MMIO and 64kiB PIO 4250 * windows. 4251 * 4252 * Some guest kernels can't work with MMIO windows above 1<<46 4253 * (64TiB), so we place up to 31 PHBs in the area 32TiB..64TiB 4254 * 4255 * 32TiB..(33TiB+1984kiB) contains the 64kiB PIO windows for each 4256 * PHB stacked together. (32TiB+2GiB)..(32TiB+64GiB) contains the 4257 * 2GiB 32-bit MMIO windows for each PHB. Then 33..64TiB has the 4258 * 1TiB 64-bit MMIO windows for each PHB. 4259 */ 4260 const uint64_t base_buid = 0x800000020000000ULL; 4261 int i; 4262 4263 /* Sanity check natural alignments */ 4264 QEMU_BUILD_BUG_ON((SPAPR_PCI_BASE % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4265 QEMU_BUILD_BUG_ON((SPAPR_PCI_LIMIT % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4266 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM64_WIN_SIZE % SPAPR_PCI_MEM32_WIN_SIZE) != 0); 4267 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM32_WIN_SIZE % SPAPR_PCI_IO_WIN_SIZE) != 0); 4268 /* Sanity check bounds */ 4269 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_IO_WIN_SIZE) > 4270 SPAPR_PCI_MEM32_WIN_SIZE); 4271 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_MEM32_WIN_SIZE) > 4272 SPAPR_PCI_MEM64_WIN_SIZE); 4273 4274 if (index >= SPAPR_MAX_PHBS) { 4275 error_setg(errp, "\"index\" for PAPR PHB is too large (max %llu)", 4276 SPAPR_MAX_PHBS - 1); 4277 return; 4278 } 4279 4280 *buid = base_buid + index; 4281 for (i = 0; i < n_dma; ++i) { 4282 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4283 } 4284 4285 *pio = SPAPR_PCI_BASE + index * SPAPR_PCI_IO_WIN_SIZE; 4286 *mmio32 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM32_WIN_SIZE; 4287 *mmio64 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM64_WIN_SIZE; 4288 4289 *nv2gpa = SPAPR_PCI_NV2RAM64_WIN_BASE + index * SPAPR_PCI_NV2RAM64_WIN_SIZE; 4290 *nv2atsd = SPAPR_PCI_NV2ATSD_WIN_BASE + index * SPAPR_PCI_NV2ATSD_WIN_SIZE; 4291 } 4292 4293 static ICSState *spapr_ics_get(XICSFabric *dev, int irq) 4294 { 4295 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4296 4297 return ics_valid_irq(spapr->ics, irq) ? spapr->ics : NULL; 4298 } 4299 4300 static void spapr_ics_resend(XICSFabric *dev) 4301 { 4302 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4303 4304 ics_resend(spapr->ics); 4305 } 4306 4307 static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) 4308 { 4309 PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); 4310 4311 return cpu ? spapr_cpu_state(cpu)->icp : NULL; 4312 } 4313 4314 static void spapr_pic_print_info(InterruptStatsProvider *obj, 4315 Monitor *mon) 4316 { 4317 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 4318 4319 spapr_irq_print_info(spapr, mon); 4320 monitor_printf(mon, "irqchip: %s\n", 4321 kvm_irqchip_in_kernel() ? "in-kernel" : "emulated"); 4322 } 4323 4324 /* 4325 * This is a XIVE only operation 4326 */ 4327 static int spapr_match_nvt(XiveFabric *xfb, uint8_t format, 4328 uint8_t nvt_blk, uint32_t nvt_idx, 4329 bool cam_ignore, uint8_t priority, 4330 uint32_t logic_serv, XiveTCTXMatch *match) 4331 { 4332 SpaprMachineState *spapr = SPAPR_MACHINE(xfb); 4333 XivePresenter *xptr = XIVE_PRESENTER(spapr->active_intc); 4334 XivePresenterClass *xpc = XIVE_PRESENTER_GET_CLASS(xptr); 4335 int count; 4336 4337 count = xpc->match_nvt(xptr, format, nvt_blk, nvt_idx, cam_ignore, 4338 priority, logic_serv, match); 4339 if (count < 0) { 4340 return count; 4341 } 4342 4343 /* 4344 * When we implement the save and restore of the thread interrupt 4345 * contexts in the enter/exit CPU handlers of the machine and the 4346 * escalations in QEMU, we should be able to handle non dispatched 4347 * vCPUs. 4348 * 4349 * Until this is done, the sPAPR machine should find at least one 4350 * matching context always. 4351 */ 4352 if (count == 0) { 4353 qemu_log_mask(LOG_GUEST_ERROR, "XIVE: NVT %x/%x is not dispatched\n", 4354 nvt_blk, nvt_idx); 4355 } 4356 4357 return count; 4358 } 4359 4360 int spapr_get_vcpu_id(PowerPCCPU *cpu) 4361 { 4362 return cpu->vcpu_id; 4363 } 4364 4365 void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp) 4366 { 4367 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 4368 MachineState *ms = MACHINE(spapr); 4369 int vcpu_id; 4370 4371 vcpu_id = spapr_vcpu_id(spapr, cpu_index); 4372 4373 if (kvm_enabled() && !kvm_vcpu_id_is_valid(vcpu_id)) { 4374 error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id); 4375 error_append_hint(errp, "Adjust the number of cpus to %d " 4376 "or try to raise the number of threads per core\n", 4377 vcpu_id * ms->smp.threads / spapr->vsmt); 4378 return; 4379 } 4380 4381 cpu->vcpu_id = vcpu_id; 4382 } 4383 4384 PowerPCCPU *spapr_find_cpu(int vcpu_id) 4385 { 4386 CPUState *cs; 4387 4388 CPU_FOREACH(cs) { 4389 PowerPCCPU *cpu = POWERPC_CPU(cs); 4390 4391 if (spapr_get_vcpu_id(cpu) == vcpu_id) { 4392 return cpu; 4393 } 4394 } 4395 4396 return NULL; 4397 } 4398 4399 static void spapr_cpu_exec_enter(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4400 { 4401 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4402 4403 /* These are only called by TCG, KVM maintains dispatch state */ 4404 4405 spapr_cpu->prod = false; 4406 if (spapr_cpu->vpa_addr) { 4407 CPUState *cs = CPU(cpu); 4408 uint32_t dispatch; 4409 4410 dispatch = ldl_be_phys(cs->as, 4411 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4412 dispatch++; 4413 if ((dispatch & 1) != 0) { 4414 qemu_log_mask(LOG_GUEST_ERROR, 4415 "VPA: incorrect dispatch counter value for " 4416 "dispatched partition %u, correcting.\n", dispatch); 4417 dispatch++; 4418 } 4419 stl_be_phys(cs->as, 4420 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4421 } 4422 } 4423 4424 static void spapr_cpu_exec_exit(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4425 { 4426 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4427 4428 if (spapr_cpu->vpa_addr) { 4429 CPUState *cs = CPU(cpu); 4430 uint32_t dispatch; 4431 4432 dispatch = ldl_be_phys(cs->as, 4433 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4434 dispatch++; 4435 if ((dispatch & 1) != 1) { 4436 qemu_log_mask(LOG_GUEST_ERROR, 4437 "VPA: incorrect dispatch counter value for " 4438 "preempted partition %u, correcting.\n", dispatch); 4439 dispatch++; 4440 } 4441 stl_be_phys(cs->as, 4442 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4443 } 4444 } 4445 4446 static void spapr_machine_class_init(ObjectClass *oc, void *data) 4447 { 4448 MachineClass *mc = MACHINE_CLASS(oc); 4449 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 4450 FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); 4451 NMIClass *nc = NMI_CLASS(oc); 4452 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 4453 PPCVirtualHypervisorClass *vhc = PPC_VIRTUAL_HYPERVISOR_CLASS(oc); 4454 XICSFabricClass *xic = XICS_FABRIC_CLASS(oc); 4455 InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); 4456 XiveFabricClass *xfc = XIVE_FABRIC_CLASS(oc); 4457 4458 mc->desc = "pSeries Logical Partition (PAPR compliant)"; 4459 mc->ignore_boot_device_suffixes = true; 4460 4461 /* 4462 * We set up the default / latest behaviour here. The class_init 4463 * functions for the specific versioned machine types can override 4464 * these details for backwards compatibility 4465 */ 4466 mc->init = spapr_machine_init; 4467 mc->reset = spapr_machine_reset; 4468 mc->block_default_type = IF_SCSI; 4469 mc->max_cpus = 1024; 4470 mc->no_parallel = 1; 4471 mc->default_boot_order = ""; 4472 mc->default_ram_size = 512 * MiB; 4473 mc->default_ram_id = "ppc_spapr.ram"; 4474 mc->default_display = "std"; 4475 mc->kvm_type = spapr_kvm_type; 4476 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE); 4477 mc->pci_allow_0_address = true; 4478 assert(!mc->get_hotplug_handler); 4479 mc->get_hotplug_handler = spapr_get_hotplug_handler; 4480 hc->pre_plug = spapr_machine_device_pre_plug; 4481 hc->plug = spapr_machine_device_plug; 4482 mc->cpu_index_to_instance_props = spapr_cpu_index_to_props; 4483 mc->get_default_cpu_node_id = spapr_get_default_cpu_node_id; 4484 mc->possible_cpu_arch_ids = spapr_possible_cpu_arch_ids; 4485 hc->unplug_request = spapr_machine_device_unplug_request; 4486 hc->unplug = spapr_machine_device_unplug; 4487 4488 smc->dr_lmb_enabled = true; 4489 smc->update_dt_enabled = true; 4490 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0"); 4491 mc->has_hotpluggable_cpus = true; 4492 mc->nvdimm_supported = true; 4493 smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; 4494 fwc->get_dev_path = spapr_get_fw_dev_path; 4495 nc->nmi_monitor_handler = spapr_nmi; 4496 smc->phb_placement = spapr_phb_placement; 4497 vhc->hypercall = emulate_spapr_hypercall; 4498 vhc->hpt_mask = spapr_hpt_mask; 4499 vhc->map_hptes = spapr_map_hptes; 4500 vhc->unmap_hptes = spapr_unmap_hptes; 4501 vhc->hpte_set_c = spapr_hpte_set_c; 4502 vhc->hpte_set_r = spapr_hpte_set_r; 4503 vhc->get_pate = spapr_get_pate; 4504 vhc->encode_hpt_for_kvm_pr = spapr_encode_hpt_for_kvm_pr; 4505 vhc->cpu_exec_enter = spapr_cpu_exec_enter; 4506 vhc->cpu_exec_exit = spapr_cpu_exec_exit; 4507 xic->ics_get = spapr_ics_get; 4508 xic->ics_resend = spapr_ics_resend; 4509 xic->icp_get = spapr_icp_get; 4510 ispc->print_info = spapr_pic_print_info; 4511 /* Force NUMA node memory size to be a multiple of 4512 * SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the granularity 4513 * in which LMBs are represented and hot-added 4514 */ 4515 mc->numa_mem_align_shift = 28; 4516 mc->numa_mem_supported = true; 4517 mc->auto_enable_numa = true; 4518 4519 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; 4520 smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; 4521 smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; 4522 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4523 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4524 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_WORKAROUND; 4525 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ 4526 smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF; 4527 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_ON; 4528 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_ON; 4529 smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_ON; 4530 spapr_caps_add_properties(smc, &error_abort); 4531 smc->irq = &spapr_irq_dual; 4532 smc->dr_phb_enabled = true; 4533 smc->linux_pci_probe = true; 4534 smc->smp_threads_vsmt = true; 4535 smc->nr_xirqs = SPAPR_NR_XIRQS; 4536 xfc->match_nvt = spapr_match_nvt; 4537 } 4538 4539 static const TypeInfo spapr_machine_info = { 4540 .name = TYPE_SPAPR_MACHINE, 4541 .parent = TYPE_MACHINE, 4542 .abstract = true, 4543 .instance_size = sizeof(SpaprMachineState), 4544 .instance_init = spapr_instance_init, 4545 .instance_finalize = spapr_machine_finalizefn, 4546 .class_size = sizeof(SpaprMachineClass), 4547 .class_init = spapr_machine_class_init, 4548 .interfaces = (InterfaceInfo[]) { 4549 { TYPE_FW_PATH_PROVIDER }, 4550 { TYPE_NMI }, 4551 { TYPE_HOTPLUG_HANDLER }, 4552 { TYPE_PPC_VIRTUAL_HYPERVISOR }, 4553 { TYPE_XICS_FABRIC }, 4554 { TYPE_INTERRUPT_STATS_PROVIDER }, 4555 { TYPE_XIVE_FABRIC }, 4556 { } 4557 }, 4558 }; 4559 4560 static void spapr_machine_latest_class_options(MachineClass *mc) 4561 { 4562 mc->alias = "pseries"; 4563 mc->is_default = true; 4564 } 4565 4566 #define DEFINE_SPAPR_MACHINE(suffix, verstr, latest) \ 4567 static void spapr_machine_##suffix##_class_init(ObjectClass *oc, \ 4568 void *data) \ 4569 { \ 4570 MachineClass *mc = MACHINE_CLASS(oc); \ 4571 spapr_machine_##suffix##_class_options(mc); \ 4572 if (latest) { \ 4573 spapr_machine_latest_class_options(mc); \ 4574 } \ 4575 } \ 4576 static const TypeInfo spapr_machine_##suffix##_info = { \ 4577 .name = MACHINE_TYPE_NAME("pseries-" verstr), \ 4578 .parent = TYPE_SPAPR_MACHINE, \ 4579 .class_init = spapr_machine_##suffix##_class_init, \ 4580 }; \ 4581 static void spapr_machine_register_##suffix(void) \ 4582 { \ 4583 type_register(&spapr_machine_##suffix##_info); \ 4584 } \ 4585 type_init(spapr_machine_register_##suffix) 4586 4587 /* 4588 * pseries-5.0 4589 */ 4590 static void spapr_machine_5_0_class_options(MachineClass *mc) 4591 { 4592 /* Defaults for the latest behaviour inherited from the base class */ 4593 } 4594 4595 DEFINE_SPAPR_MACHINE(5_0, "5.0", true); 4596 4597 /* 4598 * pseries-4.2 4599 */ 4600 static void spapr_machine_4_2_class_options(MachineClass *mc) 4601 { 4602 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4603 4604 spapr_machine_5_0_class_options(mc); 4605 compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len); 4606 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_OFF; 4607 smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_OFF; 4608 mc->nvdimm_supported = false; 4609 } 4610 4611 DEFINE_SPAPR_MACHINE(4_2, "4.2", false); 4612 4613 /* 4614 * pseries-4.1 4615 */ 4616 static void spapr_machine_4_1_class_options(MachineClass *mc) 4617 { 4618 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4619 static GlobalProperty compat[] = { 4620 /* Only allow 4kiB and 64kiB IOMMU pagesizes */ 4621 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pgsz", "0x11000" }, 4622 }; 4623 4624 spapr_machine_4_2_class_options(mc); 4625 smc->linux_pci_probe = false; 4626 smc->smp_threads_vsmt = false; 4627 compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len); 4628 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4629 } 4630 4631 DEFINE_SPAPR_MACHINE(4_1, "4.1", false); 4632 4633 /* 4634 * pseries-4.0 4635 */ 4636 static void phb_placement_4_0(SpaprMachineState *spapr, uint32_t index, 4637 uint64_t *buid, hwaddr *pio, 4638 hwaddr *mmio32, hwaddr *mmio64, 4639 unsigned n_dma, uint32_t *liobns, 4640 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4641 { 4642 spapr_phb_placement(spapr, index, buid, pio, mmio32, mmio64, n_dma, liobns, 4643 nv2gpa, nv2atsd, errp); 4644 *nv2gpa = 0; 4645 *nv2atsd = 0; 4646 } 4647 4648 static void spapr_machine_4_0_class_options(MachineClass *mc) 4649 { 4650 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4651 4652 spapr_machine_4_1_class_options(mc); 4653 compat_props_add(mc->compat_props, hw_compat_4_0, hw_compat_4_0_len); 4654 smc->phb_placement = phb_placement_4_0; 4655 smc->irq = &spapr_irq_xics; 4656 smc->pre_4_1_migration = true; 4657 } 4658 4659 DEFINE_SPAPR_MACHINE(4_0, "4.0", false); 4660 4661 /* 4662 * pseries-3.1 4663 */ 4664 static void spapr_machine_3_1_class_options(MachineClass *mc) 4665 { 4666 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4667 4668 spapr_machine_4_0_class_options(mc); 4669 compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len); 4670 4671 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); 4672 smc->update_dt_enabled = false; 4673 smc->dr_phb_enabled = false; 4674 smc->broken_host_serial_model = true; 4675 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; 4676 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; 4677 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; 4678 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_OFF; 4679 } 4680 4681 DEFINE_SPAPR_MACHINE(3_1, "3.1", false); 4682 4683 /* 4684 * pseries-3.0 4685 */ 4686 4687 static void spapr_machine_3_0_class_options(MachineClass *mc) 4688 { 4689 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4690 4691 spapr_machine_3_1_class_options(mc); 4692 compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len); 4693 4694 smc->legacy_irq_allocation = true; 4695 smc->nr_xirqs = 0x400; 4696 smc->irq = &spapr_irq_xics_legacy; 4697 } 4698 4699 DEFINE_SPAPR_MACHINE(3_0, "3.0", false); 4700 4701 /* 4702 * pseries-2.12 4703 */ 4704 static void spapr_machine_2_12_class_options(MachineClass *mc) 4705 { 4706 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4707 static GlobalProperty compat[] = { 4708 { TYPE_POWERPC_CPU, "pre-3.0-migration", "on" }, 4709 { TYPE_SPAPR_CPU_CORE, "pre-3.0-migration", "on" }, 4710 }; 4711 4712 spapr_machine_3_0_class_options(mc); 4713 compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len); 4714 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4715 4716 /* We depend on kvm_enabled() to choose a default value for the 4717 * hpt-max-page-size capability. Of course we can't do it here 4718 * because this is too early and the HW accelerator isn't initialzed 4719 * yet. Postpone this to machine init (see default_caps_with_cpu()). 4720 */ 4721 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 0; 4722 } 4723 4724 DEFINE_SPAPR_MACHINE(2_12, "2.12", false); 4725 4726 static void spapr_machine_2_12_sxxm_class_options(MachineClass *mc) 4727 { 4728 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4729 4730 spapr_machine_2_12_class_options(mc); 4731 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4732 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4733 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD; 4734 } 4735 4736 DEFINE_SPAPR_MACHINE(2_12_sxxm, "2.12-sxxm", false); 4737 4738 /* 4739 * pseries-2.11 4740 */ 4741 4742 static void spapr_machine_2_11_class_options(MachineClass *mc) 4743 { 4744 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4745 4746 spapr_machine_2_12_class_options(mc); 4747 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; 4748 compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len); 4749 } 4750 4751 DEFINE_SPAPR_MACHINE(2_11, "2.11", false); 4752 4753 /* 4754 * pseries-2.10 4755 */ 4756 4757 static void spapr_machine_2_10_class_options(MachineClass *mc) 4758 { 4759 spapr_machine_2_11_class_options(mc); 4760 compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len); 4761 } 4762 4763 DEFINE_SPAPR_MACHINE(2_10, "2.10", false); 4764 4765 /* 4766 * pseries-2.9 4767 */ 4768 4769 static void spapr_machine_2_9_class_options(MachineClass *mc) 4770 { 4771 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4772 static GlobalProperty compat[] = { 4773 { TYPE_POWERPC_CPU, "pre-2.10-migration", "on" }, 4774 }; 4775 4776 spapr_machine_2_10_class_options(mc); 4777 compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len); 4778 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4779 mc->numa_auto_assign_ram = numa_legacy_auto_assign_ram; 4780 smc->pre_2_10_has_unused_icps = true; 4781 smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED; 4782 } 4783 4784 DEFINE_SPAPR_MACHINE(2_9, "2.9", false); 4785 4786 /* 4787 * pseries-2.8 4788 */ 4789 4790 static void spapr_machine_2_8_class_options(MachineClass *mc) 4791 { 4792 static GlobalProperty compat[] = { 4793 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pcie-extended-configuration-space", "off" }, 4794 }; 4795 4796 spapr_machine_2_9_class_options(mc); 4797 compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len); 4798 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4799 mc->numa_mem_align_shift = 23; 4800 } 4801 4802 DEFINE_SPAPR_MACHINE(2_8, "2.8", false); 4803 4804 /* 4805 * pseries-2.7 4806 */ 4807 4808 static void phb_placement_2_7(SpaprMachineState *spapr, uint32_t index, 4809 uint64_t *buid, hwaddr *pio, 4810 hwaddr *mmio32, hwaddr *mmio64, 4811 unsigned n_dma, uint32_t *liobns, 4812 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4813 { 4814 /* Legacy PHB placement for pseries-2.7 and earlier machine types */ 4815 const uint64_t base_buid = 0x800000020000000ULL; 4816 const hwaddr phb_spacing = 0x1000000000ULL; /* 64 GiB */ 4817 const hwaddr mmio_offset = 0xa0000000; /* 2 GiB + 512 MiB */ 4818 const hwaddr pio_offset = 0x80000000; /* 2 GiB */ 4819 const uint32_t max_index = 255; 4820 const hwaddr phb0_alignment = 0x10000000000ULL; /* 1 TiB */ 4821 4822 uint64_t ram_top = MACHINE(spapr)->ram_size; 4823 hwaddr phb0_base, phb_base; 4824 int i; 4825 4826 /* Do we have device memory? */ 4827 if (MACHINE(spapr)->maxram_size > ram_top) { 4828 /* Can't just use maxram_size, because there may be an 4829 * alignment gap between normal and device memory regions 4830 */ 4831 ram_top = MACHINE(spapr)->device_memory->base + 4832 memory_region_size(&MACHINE(spapr)->device_memory->mr); 4833 } 4834 4835 phb0_base = QEMU_ALIGN_UP(ram_top, phb0_alignment); 4836 4837 if (index > max_index) { 4838 error_setg(errp, "\"index\" for PAPR PHB is too large (max %u)", 4839 max_index); 4840 return; 4841 } 4842 4843 *buid = base_buid + index; 4844 for (i = 0; i < n_dma; ++i) { 4845 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4846 } 4847 4848 phb_base = phb0_base + index * phb_spacing; 4849 *pio = phb_base + pio_offset; 4850 *mmio32 = phb_base + mmio_offset; 4851 /* 4852 * We don't set the 64-bit MMIO window, relying on the PHB's 4853 * fallback behaviour of automatically splitting a large "32-bit" 4854 * window into contiguous 32-bit and 64-bit windows 4855 */ 4856 4857 *nv2gpa = 0; 4858 *nv2atsd = 0; 4859 } 4860 4861 static void spapr_machine_2_7_class_options(MachineClass *mc) 4862 { 4863 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4864 static GlobalProperty compat[] = { 4865 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0xf80000000", }, 4866 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem64_win_size", "0", }, 4867 { TYPE_POWERPC_CPU, "pre-2.8-migration", "on", }, 4868 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pre-2.8-migration", "on", }, 4869 }; 4870 4871 spapr_machine_2_8_class_options(mc); 4872 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power7_v2.3"); 4873 mc->default_machine_opts = "modern-hotplug-events=off"; 4874 compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len); 4875 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4876 smc->phb_placement = phb_placement_2_7; 4877 } 4878 4879 DEFINE_SPAPR_MACHINE(2_7, "2.7", false); 4880 4881 /* 4882 * pseries-2.6 4883 */ 4884 4885 static void spapr_machine_2_6_class_options(MachineClass *mc) 4886 { 4887 static GlobalProperty compat[] = { 4888 { TYPE_SPAPR_PCI_HOST_BRIDGE, "ddw", "off" }, 4889 }; 4890 4891 spapr_machine_2_7_class_options(mc); 4892 mc->has_hotpluggable_cpus = false; 4893 compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len); 4894 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4895 } 4896 4897 DEFINE_SPAPR_MACHINE(2_6, "2.6", false); 4898 4899 /* 4900 * pseries-2.5 4901 */ 4902 4903 static void spapr_machine_2_5_class_options(MachineClass *mc) 4904 { 4905 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4906 static GlobalProperty compat[] = { 4907 { "spapr-vlan", "use-rx-buffer-pools", "off" }, 4908 }; 4909 4910 spapr_machine_2_6_class_options(mc); 4911 smc->use_ohci_by_default = true; 4912 compat_props_add(mc->compat_props, hw_compat_2_5, hw_compat_2_5_len); 4913 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4914 } 4915 4916 DEFINE_SPAPR_MACHINE(2_5, "2.5", false); 4917 4918 /* 4919 * pseries-2.4 4920 */ 4921 4922 static void spapr_machine_2_4_class_options(MachineClass *mc) 4923 { 4924 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4925 4926 spapr_machine_2_5_class_options(mc); 4927 smc->dr_lmb_enabled = false; 4928 compat_props_add(mc->compat_props, hw_compat_2_4, hw_compat_2_4_len); 4929 } 4930 4931 DEFINE_SPAPR_MACHINE(2_4, "2.4", false); 4932 4933 /* 4934 * pseries-2.3 4935 */ 4936 4937 static void spapr_machine_2_3_class_options(MachineClass *mc) 4938 { 4939 static GlobalProperty compat[] = { 4940 { "spapr-pci-host-bridge", "dynamic-reconfiguration", "off" }, 4941 }; 4942 spapr_machine_2_4_class_options(mc); 4943 compat_props_add(mc->compat_props, hw_compat_2_3, hw_compat_2_3_len); 4944 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4945 } 4946 DEFINE_SPAPR_MACHINE(2_3, "2.3", false); 4947 4948 /* 4949 * pseries-2.2 4950 */ 4951 4952 static void spapr_machine_2_2_class_options(MachineClass *mc) 4953 { 4954 static GlobalProperty compat[] = { 4955 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0x20000000" }, 4956 }; 4957 4958 spapr_machine_2_3_class_options(mc); 4959 compat_props_add(mc->compat_props, hw_compat_2_2, hw_compat_2_2_len); 4960 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4961 mc->default_machine_opts = "modern-hotplug-events=off,suppress-vmdesc=on"; 4962 } 4963 DEFINE_SPAPR_MACHINE(2_2, "2.2", false); 4964 4965 /* 4966 * pseries-2.1 4967 */ 4968 4969 static void spapr_machine_2_1_class_options(MachineClass *mc) 4970 { 4971 spapr_machine_2_2_class_options(mc); 4972 compat_props_add(mc->compat_props, hw_compat_2_1, hw_compat_2_1_len); 4973 } 4974 DEFINE_SPAPR_MACHINE(2_1, "2.1", false); 4975 4976 static void spapr_machine_register_types(void) 4977 { 4978 type_register_static(&spapr_machine_info); 4979 } 4980 4981 type_init(spapr_machine_register_types) 4982