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 MemoryRegion *ram = g_new(MemoryRegion, 1); 2656 hwaddr node0_size = spapr_node0_size(machine); 2657 long load_limit, fw_size; 2658 char *filename; 2659 Error *resize_hpt_err = NULL; 2660 2661 msi_nonbroken = true; 2662 2663 QLIST_INIT(&spapr->phbs); 2664 QTAILQ_INIT(&spapr->pending_dimm_unplugs); 2665 2666 /* Determine capabilities to run with */ 2667 spapr_caps_init(spapr); 2668 2669 kvmppc_check_papr_resize_hpt(&resize_hpt_err); 2670 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DEFAULT) { 2671 /* 2672 * If the user explicitly requested a mode we should either 2673 * supply it, or fail completely (which we do below). But if 2674 * it's not set explicitly, we reset our mode to something 2675 * that works 2676 */ 2677 if (resize_hpt_err) { 2678 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 2679 error_free(resize_hpt_err); 2680 resize_hpt_err = NULL; 2681 } else { 2682 spapr->resize_hpt = smc->resize_hpt_default; 2683 } 2684 } 2685 2686 assert(spapr->resize_hpt != SPAPR_RESIZE_HPT_DEFAULT); 2687 2688 if ((spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) && resize_hpt_err) { 2689 /* 2690 * User requested HPT resize, but this host can't supply it. Bail out 2691 */ 2692 error_report_err(resize_hpt_err); 2693 exit(1); 2694 } 2695 2696 spapr->rma_size = node0_size; 2697 2698 /* With KVM, we don't actually know whether KVM supports an 2699 * unbounded RMA (PR KVM) or is limited by the hash table size 2700 * (HV KVM using VRMA), so we always assume the latter 2701 * 2702 * In that case, we also limit the initial allocations for RTAS 2703 * etc... to 256M since we have no way to know what the VRMA size 2704 * is going to be as it depends on the size of the hash table 2705 * which isn't determined yet. 2706 */ 2707 if (kvm_enabled()) { 2708 spapr->vrma_adjust = 1; 2709 spapr->rma_size = MIN(spapr->rma_size, 0x10000000); 2710 } 2711 2712 /* Actually we don't support unbounded RMA anymore since we added 2713 * proper emulation of HV mode. The max we can get is 16G which 2714 * also happens to be what we configure for PAPR mode so make sure 2715 * we don't do anything bigger than that 2716 */ 2717 spapr->rma_size = MIN(spapr->rma_size, 0x400000000ull); 2718 2719 if (spapr->rma_size > node0_size) { 2720 error_report("Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")", 2721 spapr->rma_size); 2722 exit(1); 2723 } 2724 2725 /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ 2726 load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; 2727 2728 /* 2729 * VSMT must be set in order to be able to compute VCPU ids, ie to 2730 * call spapr_max_server_number() or spapr_vcpu_id(). 2731 */ 2732 spapr_set_vsmt_mode(spapr, &error_fatal); 2733 2734 /* Set up Interrupt Controller before we create the VCPUs */ 2735 spapr_irq_init(spapr, &error_fatal); 2736 2737 /* Set up containers for ibm,client-architecture-support negotiated options 2738 */ 2739 spapr->ov5 = spapr_ovec_new(); 2740 spapr->ov5_cas = spapr_ovec_new(); 2741 2742 if (smc->dr_lmb_enabled) { 2743 spapr_ovec_set(spapr->ov5, OV5_DRCONF_MEMORY); 2744 spapr_validate_node_memory(machine, &error_fatal); 2745 } 2746 2747 spapr_ovec_set(spapr->ov5, OV5_FORM1_AFFINITY); 2748 2749 /* advertise support for dedicated HP event source to guests */ 2750 if (spapr->use_hotplug_event_source) { 2751 spapr_ovec_set(spapr->ov5, OV5_HP_EVT); 2752 } 2753 2754 /* advertise support for HPT resizing */ 2755 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 2756 spapr_ovec_set(spapr->ov5, OV5_HPT_RESIZE); 2757 } 2758 2759 /* advertise support for ibm,dyamic-memory-v2 */ 2760 spapr_ovec_set(spapr->ov5, OV5_DRMEM_V2); 2761 2762 /* advertise XIVE on POWER9 machines */ 2763 if (spapr->irq->xive) { 2764 spapr_ovec_set(spapr->ov5, OV5_XIVE_EXPLOIT); 2765 } 2766 2767 /* init CPUs */ 2768 spapr_init_cpus(spapr); 2769 2770 /* 2771 * check we don't have a memory-less/cpu-less NUMA node 2772 * Firmware relies on the existing memory/cpu topology to provide the 2773 * NUMA topology to the kernel. 2774 * And the linux kernel needs to know the NUMA topology at start 2775 * to be able to hotplug CPUs later. 2776 */ 2777 if (machine->numa_state->num_nodes) { 2778 for (i = 0; i < machine->numa_state->num_nodes; ++i) { 2779 /* check for memory-less node */ 2780 if (machine->numa_state->nodes[i].node_mem == 0) { 2781 CPUState *cs; 2782 int found = 0; 2783 /* check for cpu-less node */ 2784 CPU_FOREACH(cs) { 2785 PowerPCCPU *cpu = POWERPC_CPU(cs); 2786 if (cpu->node_id == i) { 2787 found = 1; 2788 break; 2789 } 2790 } 2791 /* memory-less and cpu-less node */ 2792 if (!found) { 2793 error_report( 2794 "Memory-less/cpu-less nodes are not supported (node %d)", 2795 i); 2796 exit(1); 2797 } 2798 } 2799 } 2800 2801 } 2802 2803 /* 2804 * NVLink2-connected GPU RAM needs to be placed on a separate NUMA node. 2805 * We assign a new numa ID per GPU in spapr_pci_collect_nvgpu() which is 2806 * called from vPHB reset handler so we initialize the counter here. 2807 * If no NUMA is configured from the QEMU side, we start from 1 as GPU RAM 2808 * must be equally distant from any other node. 2809 * The final value of spapr->gpu_numa_id is going to be written to 2810 * max-associativity-domains in spapr_build_fdt(). 2811 */ 2812 spapr->gpu_numa_id = MAX(1, machine->numa_state->num_nodes); 2813 2814 if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) && 2815 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 2816 spapr->max_compat_pvr)) { 2817 /* KVM and TCG always allow GTSE with radix... */ 2818 spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_GTSE); 2819 } 2820 /* ... but not with hash (currently). */ 2821 2822 if (kvm_enabled()) { 2823 /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ 2824 kvmppc_enable_logical_ci_hcalls(); 2825 kvmppc_enable_set_mode_hcall(); 2826 2827 /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ 2828 kvmppc_enable_clear_ref_mod_hcalls(); 2829 2830 /* Enable H_PAGE_INIT */ 2831 kvmppc_enable_h_page_init(); 2832 } 2833 2834 /* allocate RAM */ 2835 memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram", 2836 machine->ram_size); 2837 memory_region_add_subregion(sysmem, 0, ram); 2838 2839 /* always allocate the device memory information */ 2840 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 2841 2842 /* initialize hotplug memory address space */ 2843 if (machine->ram_size < machine->maxram_size) { 2844 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 2845 /* 2846 * Limit the number of hotpluggable memory slots to half the number 2847 * slots that KVM supports, leaving the other half for PCI and other 2848 * devices. However ensure that number of slots doesn't drop below 32. 2849 */ 2850 int max_memslots = kvm_enabled() ? kvm_get_max_memslots() / 2 : 2851 SPAPR_MAX_RAM_SLOTS; 2852 2853 if (max_memslots < SPAPR_MAX_RAM_SLOTS) { 2854 max_memslots = SPAPR_MAX_RAM_SLOTS; 2855 } 2856 if (machine->ram_slots > max_memslots) { 2857 error_report("Specified number of memory slots %" 2858 PRIu64" exceeds max supported %d", 2859 machine->ram_slots, max_memslots); 2860 exit(1); 2861 } 2862 2863 machine->device_memory->base = ROUND_UP(machine->ram_size, 2864 SPAPR_DEVICE_MEM_ALIGN); 2865 memory_region_init(&machine->device_memory->mr, OBJECT(spapr), 2866 "device-memory", device_mem_size); 2867 memory_region_add_subregion(sysmem, machine->device_memory->base, 2868 &machine->device_memory->mr); 2869 } 2870 2871 if (smc->dr_lmb_enabled) { 2872 spapr_create_lmb_dr_connectors(spapr); 2873 } 2874 2875 if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_ON) { 2876 /* Create the error string for live migration blocker */ 2877 error_setg(&spapr->fwnmi_migration_blocker, 2878 "A machine check is being handled during migration. The handler" 2879 "may run and log hardware error on the destination"); 2880 } 2881 2882 if (mc->nvdimm_supported) { 2883 spapr_create_nvdimm_dr_connectors(spapr); 2884 } 2885 2886 /* Set up RTAS event infrastructure */ 2887 spapr_events_init(spapr); 2888 2889 /* Set up the RTC RTAS interfaces */ 2890 spapr_rtc_create(spapr); 2891 2892 /* Set up VIO bus */ 2893 spapr->vio_bus = spapr_vio_bus_init(); 2894 2895 for (i = 0; i < serial_max_hds(); i++) { 2896 if (serial_hd(i)) { 2897 spapr_vty_create(spapr->vio_bus, serial_hd(i)); 2898 } 2899 } 2900 2901 /* We always have at least the nvram device on VIO */ 2902 spapr_create_nvram(spapr); 2903 2904 /* 2905 * Setup hotplug / dynamic-reconfiguration connectors. top-level 2906 * connectors (described in root DT node's "ibm,drc-types" property) 2907 * are pre-initialized here. additional child connectors (such as 2908 * connectors for a PHBs PCI slots) are added as needed during their 2909 * parent's realization. 2910 */ 2911 if (smc->dr_phb_enabled) { 2912 for (i = 0; i < SPAPR_MAX_PHBS; i++) { 2913 spapr_dr_connector_new(OBJECT(machine), TYPE_SPAPR_DRC_PHB, i); 2914 } 2915 } 2916 2917 /* Set up PCI */ 2918 spapr_pci_rtas_init(); 2919 2920 phb = spapr_create_default_phb(); 2921 2922 for (i = 0; i < nb_nics; i++) { 2923 NICInfo *nd = &nd_table[i]; 2924 2925 if (!nd->model) { 2926 nd->model = g_strdup("spapr-vlan"); 2927 } 2928 2929 if (g_str_equal(nd->model, "spapr-vlan") || 2930 g_str_equal(nd->model, "ibmveth")) { 2931 spapr_vlan_create(spapr->vio_bus, nd); 2932 } else { 2933 pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); 2934 } 2935 } 2936 2937 for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { 2938 spapr_vscsi_create(spapr->vio_bus); 2939 } 2940 2941 /* Graphics */ 2942 if (spapr_vga_init(phb->bus, &error_fatal)) { 2943 spapr->has_graphics = true; 2944 machine->usb |= defaults_enabled() && !machine->usb_disabled; 2945 } 2946 2947 if (machine->usb) { 2948 if (smc->use_ohci_by_default) { 2949 pci_create_simple(phb->bus, -1, "pci-ohci"); 2950 } else { 2951 pci_create_simple(phb->bus, -1, "nec-usb-xhci"); 2952 } 2953 2954 if (spapr->has_graphics) { 2955 USBBus *usb_bus = usb_bus_find(-1); 2956 2957 usb_create_simple(usb_bus, "usb-kbd"); 2958 usb_create_simple(usb_bus, "usb-mouse"); 2959 } 2960 } 2961 2962 if (spapr->rma_size < (MIN_RMA_SLOF * MiB)) { 2963 error_report( 2964 "pSeries SLOF firmware requires >= %ldM guest RMA (Real Mode Area memory)", 2965 MIN_RMA_SLOF); 2966 exit(1); 2967 } 2968 2969 if (kernel_filename) { 2970 uint64_t lowaddr = 0; 2971 2972 spapr->kernel_size = load_elf(kernel_filename, NULL, 2973 translate_kernel_address, spapr, 2974 NULL, &lowaddr, NULL, NULL, 1, 2975 PPC_ELF_MACHINE, 0, 0); 2976 if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) { 2977 spapr->kernel_size = load_elf(kernel_filename, NULL, 2978 translate_kernel_address, spapr, NULL, 2979 &lowaddr, NULL, NULL, 0, 2980 PPC_ELF_MACHINE, 2981 0, 0); 2982 spapr->kernel_le = spapr->kernel_size > 0; 2983 } 2984 if (spapr->kernel_size < 0) { 2985 error_report("error loading %s: %s", kernel_filename, 2986 load_elf_strerror(spapr->kernel_size)); 2987 exit(1); 2988 } 2989 2990 /* load initrd */ 2991 if (initrd_filename) { 2992 /* Try to locate the initrd in the gap between the kernel 2993 * and the firmware. Add a bit of space just in case 2994 */ 2995 spapr->initrd_base = (spapr->kernel_addr + spapr->kernel_size 2996 + 0x1ffff) & ~0xffff; 2997 spapr->initrd_size = load_image_targphys(initrd_filename, 2998 spapr->initrd_base, 2999 load_limit 3000 - spapr->initrd_base); 3001 if (spapr->initrd_size < 0) { 3002 error_report("could not load initial ram disk '%s'", 3003 initrd_filename); 3004 exit(1); 3005 } 3006 } 3007 } 3008 3009 if (bios_name == NULL) { 3010 bios_name = FW_FILE_NAME; 3011 } 3012 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 3013 if (!filename) { 3014 error_report("Could not find LPAR firmware '%s'", bios_name); 3015 exit(1); 3016 } 3017 fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); 3018 if (fw_size <= 0) { 3019 error_report("Could not load LPAR firmware '%s'", filename); 3020 exit(1); 3021 } 3022 g_free(filename); 3023 3024 /* FIXME: Should register things through the MachineState's qdev 3025 * interface, this is a legacy from the sPAPREnvironment structure 3026 * which predated MachineState but had a similar function */ 3027 vmstate_register(NULL, 0, &vmstate_spapr, spapr); 3028 register_savevm_live("spapr/htab", VMSTATE_INSTANCE_ID_ANY, 1, 3029 &savevm_htab_handlers, spapr); 3030 3031 qbus_set_hotplug_handler(sysbus_get_default(), OBJECT(machine), 3032 &error_fatal); 3033 3034 qemu_register_boot_set(spapr_boot_set, spapr); 3035 3036 /* 3037 * Nothing needs to be done to resume a suspended guest because 3038 * suspending does not change the machine state, so no need for 3039 * a ->wakeup method. 3040 */ 3041 qemu_register_wakeup_support(); 3042 3043 if (kvm_enabled()) { 3044 /* to stop and start vmclock */ 3045 qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, 3046 &spapr->tb); 3047 3048 kvmppc_spapr_enable_inkernel_multitce(); 3049 } 3050 3051 qemu_cond_init(&spapr->mc_delivery_cond); 3052 } 3053 3054 static int spapr_kvm_type(MachineState *machine, const char *vm_type) 3055 { 3056 if (!vm_type) { 3057 return 0; 3058 } 3059 3060 if (!strcmp(vm_type, "HV")) { 3061 return 1; 3062 } 3063 3064 if (!strcmp(vm_type, "PR")) { 3065 return 2; 3066 } 3067 3068 error_report("Unknown kvm-type specified '%s'", vm_type); 3069 exit(1); 3070 } 3071 3072 /* 3073 * Implementation of an interface to adjust firmware path 3074 * for the bootindex property handling. 3075 */ 3076 static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, 3077 DeviceState *dev) 3078 { 3079 #define CAST(type, obj, name) \ 3080 ((type *)object_dynamic_cast(OBJECT(obj), (name))) 3081 SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); 3082 SpaprPhbState *phb = CAST(SpaprPhbState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); 3083 VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON); 3084 3085 if (d) { 3086 void *spapr = CAST(void, bus->parent, "spapr-vscsi"); 3087 VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); 3088 USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); 3089 3090 if (spapr) { 3091 /* 3092 * Replace "channel@0/disk@0,0" with "disk@8000000000000000": 3093 * In the top 16 bits of the 64-bit LUN, we use SRP luns of the form 3094 * 0x8000 | (target << 8) | (bus << 5) | lun 3095 * (see the "Logical unit addressing format" table in SAM5) 3096 */ 3097 unsigned id = 0x8000 | (d->id << 8) | (d->channel << 5) | d->lun; 3098 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3099 (uint64_t)id << 48); 3100 } else if (virtio) { 3101 /* 3102 * We use SRP luns of the form 01000000 | (target << 8) | lun 3103 * in the top 32 bits of the 64-bit LUN 3104 * Note: the quote above is from SLOF and it is wrong, 3105 * the actual binding is: 3106 * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) 3107 */ 3108 unsigned id = 0x1000000 | (d->id << 16) | d->lun; 3109 if (d->lun >= 256) { 3110 /* Use the LUN "flat space addressing method" */ 3111 id |= 0x4000; 3112 } 3113 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3114 (uint64_t)id << 32); 3115 } else if (usb) { 3116 /* 3117 * We use SRP luns of the form 01000000 | (usb-port << 16) | lun 3118 * in the top 32 bits of the 64-bit LUN 3119 */ 3120 unsigned usb_port = atoi(usb->port->path); 3121 unsigned id = 0x1000000 | (usb_port << 16) | d->lun; 3122 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3123 (uint64_t)id << 32); 3124 } 3125 } 3126 3127 /* 3128 * SLOF probes the USB devices, and if it recognizes that the device is a 3129 * storage device, it changes its name to "storage" instead of "usb-host", 3130 * and additionally adds a child node for the SCSI LUN, so the correct 3131 * boot path in SLOF is something like .../storage@1/disk@xxx" instead. 3132 */ 3133 if (strcmp("usb-host", qdev_fw_name(dev)) == 0) { 3134 USBDevice *usbdev = CAST(USBDevice, dev, TYPE_USB_DEVICE); 3135 if (usb_host_dev_is_scsi_storage(usbdev)) { 3136 return g_strdup_printf("storage@%s/disk", usbdev->port->path); 3137 } 3138 } 3139 3140 if (phb) { 3141 /* Replace "pci" with "pci@800000020000000" */ 3142 return g_strdup_printf("pci@%"PRIX64, phb->buid); 3143 } 3144 3145 if (vsc) { 3146 /* Same logic as virtio above */ 3147 unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun; 3148 return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32); 3149 } 3150 3151 if (g_str_equal("pci-bridge", qdev_fw_name(dev))) { 3152 /* SLOF uses "pci" instead of "pci-bridge" for PCI bridges */ 3153 PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE); 3154 return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn)); 3155 } 3156 3157 return NULL; 3158 } 3159 3160 static char *spapr_get_kvm_type(Object *obj, Error **errp) 3161 { 3162 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3163 3164 return g_strdup(spapr->kvm_type); 3165 } 3166 3167 static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) 3168 { 3169 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3170 3171 g_free(spapr->kvm_type); 3172 spapr->kvm_type = g_strdup(value); 3173 } 3174 3175 static bool spapr_get_modern_hotplug_events(Object *obj, Error **errp) 3176 { 3177 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3178 3179 return spapr->use_hotplug_event_source; 3180 } 3181 3182 static void spapr_set_modern_hotplug_events(Object *obj, bool value, 3183 Error **errp) 3184 { 3185 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3186 3187 spapr->use_hotplug_event_source = value; 3188 } 3189 3190 static bool spapr_get_msix_emulation(Object *obj, Error **errp) 3191 { 3192 return true; 3193 } 3194 3195 static char *spapr_get_resize_hpt(Object *obj, Error **errp) 3196 { 3197 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3198 3199 switch (spapr->resize_hpt) { 3200 case SPAPR_RESIZE_HPT_DEFAULT: 3201 return g_strdup("default"); 3202 case SPAPR_RESIZE_HPT_DISABLED: 3203 return g_strdup("disabled"); 3204 case SPAPR_RESIZE_HPT_ENABLED: 3205 return g_strdup("enabled"); 3206 case SPAPR_RESIZE_HPT_REQUIRED: 3207 return g_strdup("required"); 3208 } 3209 g_assert_not_reached(); 3210 } 3211 3212 static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) 3213 { 3214 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3215 3216 if (strcmp(value, "default") == 0) { 3217 spapr->resize_hpt = SPAPR_RESIZE_HPT_DEFAULT; 3218 } else if (strcmp(value, "disabled") == 0) { 3219 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 3220 } else if (strcmp(value, "enabled") == 0) { 3221 spapr->resize_hpt = SPAPR_RESIZE_HPT_ENABLED; 3222 } else if (strcmp(value, "required") == 0) { 3223 spapr->resize_hpt = SPAPR_RESIZE_HPT_REQUIRED; 3224 } else { 3225 error_setg(errp, "Bad value for \"resize-hpt\" property"); 3226 } 3227 } 3228 3229 static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name, 3230 void *opaque, Error **errp) 3231 { 3232 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3233 } 3234 3235 static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name, 3236 void *opaque, Error **errp) 3237 { 3238 visit_type_uint32(v, name, (uint32_t *)opaque, errp); 3239 } 3240 3241 static void spapr_get_kernel_addr(Object *obj, Visitor *v, const char *name, 3242 void *opaque, Error **errp) 3243 { 3244 visit_type_uint64(v, name, (uint64_t *)opaque, errp); 3245 } 3246 3247 static void spapr_set_kernel_addr(Object *obj, Visitor *v, const char *name, 3248 void *opaque, Error **errp) 3249 { 3250 visit_type_uint64(v, name, (uint64_t *)opaque, errp); 3251 } 3252 3253 static char *spapr_get_ic_mode(Object *obj, Error **errp) 3254 { 3255 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3256 3257 if (spapr->irq == &spapr_irq_xics_legacy) { 3258 return g_strdup("legacy"); 3259 } else if (spapr->irq == &spapr_irq_xics) { 3260 return g_strdup("xics"); 3261 } else if (spapr->irq == &spapr_irq_xive) { 3262 return g_strdup("xive"); 3263 } else if (spapr->irq == &spapr_irq_dual) { 3264 return g_strdup("dual"); 3265 } 3266 g_assert_not_reached(); 3267 } 3268 3269 static void spapr_set_ic_mode(Object *obj, const char *value, Error **errp) 3270 { 3271 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3272 3273 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 3274 error_setg(errp, "This machine only uses the legacy XICS backend, don't pass ic-mode"); 3275 return; 3276 } 3277 3278 /* The legacy IRQ backend can not be set */ 3279 if (strcmp(value, "xics") == 0) { 3280 spapr->irq = &spapr_irq_xics; 3281 } else if (strcmp(value, "xive") == 0) { 3282 spapr->irq = &spapr_irq_xive; 3283 } else if (strcmp(value, "dual") == 0) { 3284 spapr->irq = &spapr_irq_dual; 3285 } else { 3286 error_setg(errp, "Bad value for \"ic-mode\" property"); 3287 } 3288 } 3289 3290 static char *spapr_get_host_model(Object *obj, Error **errp) 3291 { 3292 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3293 3294 return g_strdup(spapr->host_model); 3295 } 3296 3297 static void spapr_set_host_model(Object *obj, const char *value, Error **errp) 3298 { 3299 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3300 3301 g_free(spapr->host_model); 3302 spapr->host_model = g_strdup(value); 3303 } 3304 3305 static char *spapr_get_host_serial(Object *obj, Error **errp) 3306 { 3307 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3308 3309 return g_strdup(spapr->host_serial); 3310 } 3311 3312 static void spapr_set_host_serial(Object *obj, const char *value, Error **errp) 3313 { 3314 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3315 3316 g_free(spapr->host_serial); 3317 spapr->host_serial = g_strdup(value); 3318 } 3319 3320 static void spapr_instance_init(Object *obj) 3321 { 3322 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3323 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3324 3325 spapr->htab_fd = -1; 3326 spapr->use_hotplug_event_source = true; 3327 object_property_add_str(obj, "kvm-type", 3328 spapr_get_kvm_type, spapr_set_kvm_type, NULL); 3329 object_property_set_description(obj, "kvm-type", 3330 "Specifies the KVM virtualization mode (HV, PR)", 3331 NULL); 3332 object_property_add_bool(obj, "modern-hotplug-events", 3333 spapr_get_modern_hotplug_events, 3334 spapr_set_modern_hotplug_events, 3335 NULL); 3336 object_property_set_description(obj, "modern-hotplug-events", 3337 "Use dedicated hotplug event mechanism in" 3338 " place of standard EPOW events when possible" 3339 " (required for memory hot-unplug support)", 3340 NULL); 3341 ppc_compat_add_property(obj, "max-cpu-compat", &spapr->max_compat_pvr, 3342 "Maximum permitted CPU compatibility mode", 3343 &error_fatal); 3344 3345 object_property_add_str(obj, "resize-hpt", 3346 spapr_get_resize_hpt, spapr_set_resize_hpt, NULL); 3347 object_property_set_description(obj, "resize-hpt", 3348 "Resizing of the Hash Page Table (enabled, disabled, required)", 3349 NULL); 3350 object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt, 3351 spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort); 3352 object_property_set_description(obj, "vsmt", 3353 "Virtual SMT: KVM behaves as if this were" 3354 " the host's SMT mode", &error_abort); 3355 object_property_add_bool(obj, "vfio-no-msix-emulation", 3356 spapr_get_msix_emulation, NULL, NULL); 3357 3358 object_property_add(obj, "kernel-addr", "uint64", spapr_get_kernel_addr, 3359 spapr_set_kernel_addr, NULL, &spapr->kernel_addr, 3360 &error_abort); 3361 object_property_set_description(obj, "kernel-addr", 3362 stringify(KERNEL_LOAD_ADDR) 3363 " for -kernel is the default", 3364 NULL); 3365 spapr->kernel_addr = KERNEL_LOAD_ADDR; 3366 /* The machine class defines the default interrupt controller mode */ 3367 spapr->irq = smc->irq; 3368 object_property_add_str(obj, "ic-mode", spapr_get_ic_mode, 3369 spapr_set_ic_mode, NULL); 3370 object_property_set_description(obj, "ic-mode", 3371 "Specifies the interrupt controller mode (xics, xive, dual)", 3372 NULL); 3373 3374 object_property_add_str(obj, "host-model", 3375 spapr_get_host_model, spapr_set_host_model, 3376 &error_abort); 3377 object_property_set_description(obj, "host-model", 3378 "Host model to advertise in guest device tree", &error_abort); 3379 object_property_add_str(obj, "host-serial", 3380 spapr_get_host_serial, spapr_set_host_serial, 3381 &error_abort); 3382 object_property_set_description(obj, "host-serial", 3383 "Host serial number to advertise in guest device tree", &error_abort); 3384 } 3385 3386 static void spapr_machine_finalizefn(Object *obj) 3387 { 3388 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3389 3390 g_free(spapr->kvm_type); 3391 } 3392 3393 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg) 3394 { 3395 cpu_synchronize_state(cs); 3396 ppc_cpu_do_system_reset(cs); 3397 } 3398 3399 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) 3400 { 3401 CPUState *cs; 3402 3403 CPU_FOREACH(cs) { 3404 async_run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 3405 } 3406 } 3407 3408 int spapr_lmb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3409 void *fdt, int *fdt_start_offset, Error **errp) 3410 { 3411 uint64_t addr; 3412 uint32_t node; 3413 3414 addr = spapr_drc_index(drc) * SPAPR_MEMORY_BLOCK_SIZE; 3415 node = object_property_get_uint(OBJECT(drc->dev), PC_DIMM_NODE_PROP, 3416 &error_abort); 3417 *fdt_start_offset = spapr_populate_memory_node(fdt, node, addr, 3418 SPAPR_MEMORY_BLOCK_SIZE); 3419 return 0; 3420 } 3421 3422 static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, 3423 bool dedicated_hp_event_source, Error **errp) 3424 { 3425 SpaprDrc *drc; 3426 uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; 3427 int i; 3428 uint64_t addr = addr_start; 3429 bool hotplugged = spapr_drc_hotplugged(dev); 3430 Error *local_err = NULL; 3431 3432 for (i = 0; i < nr_lmbs; i++) { 3433 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3434 addr / SPAPR_MEMORY_BLOCK_SIZE); 3435 g_assert(drc); 3436 3437 spapr_drc_attach(drc, dev, &local_err); 3438 if (local_err) { 3439 while (addr > addr_start) { 3440 addr -= SPAPR_MEMORY_BLOCK_SIZE; 3441 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3442 addr / SPAPR_MEMORY_BLOCK_SIZE); 3443 spapr_drc_detach(drc); 3444 } 3445 error_propagate(errp, local_err); 3446 return; 3447 } 3448 if (!hotplugged) { 3449 spapr_drc_reset(drc); 3450 } 3451 addr += SPAPR_MEMORY_BLOCK_SIZE; 3452 } 3453 /* send hotplug notification to the 3454 * guest only in case of hotplugged memory 3455 */ 3456 if (hotplugged) { 3457 if (dedicated_hp_event_source) { 3458 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3459 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3460 spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3461 nr_lmbs, 3462 spapr_drc_index(drc)); 3463 } else { 3464 spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, 3465 nr_lmbs); 3466 } 3467 } 3468 } 3469 3470 static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3471 Error **errp) 3472 { 3473 Error *local_err = NULL; 3474 SpaprMachineState *ms = SPAPR_MACHINE(hotplug_dev); 3475 PCDIMMDevice *dimm = PC_DIMM(dev); 3476 uint64_t size, addr, slot; 3477 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3478 3479 size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort); 3480 3481 pc_dimm_plug(dimm, MACHINE(ms), &local_err); 3482 if (local_err) { 3483 goto out; 3484 } 3485 3486 if (!is_nvdimm) { 3487 addr = object_property_get_uint(OBJECT(dimm), 3488 PC_DIMM_ADDR_PROP, &local_err); 3489 if (local_err) { 3490 goto out_unplug; 3491 } 3492 spapr_add_lmbs(dev, addr, size, 3493 spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), 3494 &local_err); 3495 } else { 3496 slot = object_property_get_uint(OBJECT(dimm), 3497 PC_DIMM_SLOT_PROP, &local_err); 3498 if (local_err) { 3499 goto out_unplug; 3500 } 3501 spapr_add_nvdimm(dev, slot, &local_err); 3502 } 3503 3504 if (local_err) { 3505 goto out_unplug; 3506 } 3507 3508 return; 3509 3510 out_unplug: 3511 pc_dimm_unplug(dimm, MACHINE(ms)); 3512 out: 3513 error_propagate(errp, local_err); 3514 } 3515 3516 static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3517 Error **errp) 3518 { 3519 const SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(hotplug_dev); 3520 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3521 const MachineClass *mc = MACHINE_CLASS(smc); 3522 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3523 PCDIMMDevice *dimm = PC_DIMM(dev); 3524 Error *local_err = NULL; 3525 uint64_t size; 3526 Object *memdev; 3527 hwaddr pagesize; 3528 3529 if (!smc->dr_lmb_enabled) { 3530 error_setg(errp, "Memory hotplug not supported for this machine"); 3531 return; 3532 } 3533 3534 if (is_nvdimm && !mc->nvdimm_supported) { 3535 error_setg(errp, "NVDIMM hotplug not supported for this machine"); 3536 return; 3537 } 3538 3539 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &local_err); 3540 if (local_err) { 3541 error_propagate(errp, local_err); 3542 return; 3543 } 3544 3545 if (!is_nvdimm && size % SPAPR_MEMORY_BLOCK_SIZE) { 3546 error_setg(errp, "Hotplugged memory size must be a multiple of " 3547 "%" PRIu64 " MB", SPAPR_MEMORY_BLOCK_SIZE / MiB); 3548 return; 3549 } else if (is_nvdimm) { 3550 spapr_nvdimm_validate_opts(NVDIMM(dev), size, &local_err); 3551 if (local_err) { 3552 error_propagate(errp, local_err); 3553 return; 3554 } 3555 } 3556 3557 memdev = object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, 3558 &error_abort); 3559 pagesize = host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); 3560 spapr_check_pagesize(spapr, pagesize, &local_err); 3561 if (local_err) { 3562 error_propagate(errp, local_err); 3563 return; 3564 } 3565 3566 pc_dimm_pre_plug(dimm, MACHINE(hotplug_dev), NULL, errp); 3567 } 3568 3569 struct SpaprDimmState { 3570 PCDIMMDevice *dimm; 3571 uint32_t nr_lmbs; 3572 QTAILQ_ENTRY(SpaprDimmState) next; 3573 }; 3574 3575 static SpaprDimmState *spapr_pending_dimm_unplugs_find(SpaprMachineState *s, 3576 PCDIMMDevice *dimm) 3577 { 3578 SpaprDimmState *dimm_state = NULL; 3579 3580 QTAILQ_FOREACH(dimm_state, &s->pending_dimm_unplugs, next) { 3581 if (dimm_state->dimm == dimm) { 3582 break; 3583 } 3584 } 3585 return dimm_state; 3586 } 3587 3588 static SpaprDimmState *spapr_pending_dimm_unplugs_add(SpaprMachineState *spapr, 3589 uint32_t nr_lmbs, 3590 PCDIMMDevice *dimm) 3591 { 3592 SpaprDimmState *ds = NULL; 3593 3594 /* 3595 * If this request is for a DIMM whose removal had failed earlier 3596 * (due to guest's refusal to remove the LMBs), we would have this 3597 * dimm already in the pending_dimm_unplugs list. In that 3598 * case don't add again. 3599 */ 3600 ds = spapr_pending_dimm_unplugs_find(spapr, dimm); 3601 if (!ds) { 3602 ds = g_malloc0(sizeof(SpaprDimmState)); 3603 ds->nr_lmbs = nr_lmbs; 3604 ds->dimm = dimm; 3605 QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next); 3606 } 3607 return ds; 3608 } 3609 3610 static void spapr_pending_dimm_unplugs_remove(SpaprMachineState *spapr, 3611 SpaprDimmState *dimm_state) 3612 { 3613 QTAILQ_REMOVE(&spapr->pending_dimm_unplugs, dimm_state, next); 3614 g_free(dimm_state); 3615 } 3616 3617 static SpaprDimmState *spapr_recover_pending_dimm_state(SpaprMachineState *ms, 3618 PCDIMMDevice *dimm) 3619 { 3620 SpaprDrc *drc; 3621 uint64_t size = memory_device_get_region_size(MEMORY_DEVICE(dimm), 3622 &error_abort); 3623 uint32_t nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3624 uint32_t avail_lmbs = 0; 3625 uint64_t addr_start, addr; 3626 int i; 3627 3628 addr_start = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3629 &error_abort); 3630 3631 addr = addr_start; 3632 for (i = 0; i < nr_lmbs; i++) { 3633 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3634 addr / SPAPR_MEMORY_BLOCK_SIZE); 3635 g_assert(drc); 3636 if (drc->dev) { 3637 avail_lmbs++; 3638 } 3639 addr += SPAPR_MEMORY_BLOCK_SIZE; 3640 } 3641 3642 return spapr_pending_dimm_unplugs_add(ms, avail_lmbs, dimm); 3643 } 3644 3645 /* Callback to be called during DRC release. */ 3646 void spapr_lmb_release(DeviceState *dev) 3647 { 3648 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3649 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); 3650 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3651 3652 /* This information will get lost if a migration occurs 3653 * during the unplug process. In this case recover it. */ 3654 if (ds == NULL) { 3655 ds = spapr_recover_pending_dimm_state(spapr, PC_DIMM(dev)); 3656 g_assert(ds); 3657 /* The DRC being examined by the caller at least must be counted */ 3658 g_assert(ds->nr_lmbs); 3659 } 3660 3661 if (--ds->nr_lmbs) { 3662 return; 3663 } 3664 3665 /* 3666 * Now that all the LMBs have been removed by the guest, call the 3667 * unplug handler chain. This can never fail. 3668 */ 3669 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3670 object_unparent(OBJECT(dev)); 3671 } 3672 3673 static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3674 { 3675 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3676 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3677 3678 pc_dimm_unplug(PC_DIMM(dev), MACHINE(hotplug_dev)); 3679 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 3680 spapr_pending_dimm_unplugs_remove(spapr, ds); 3681 } 3682 3683 static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev, 3684 DeviceState *dev, Error **errp) 3685 { 3686 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3687 Error *local_err = NULL; 3688 PCDIMMDevice *dimm = PC_DIMM(dev); 3689 uint32_t nr_lmbs; 3690 uint64_t size, addr_start, addr; 3691 int i; 3692 SpaprDrc *drc; 3693 3694 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { 3695 error_setg(&local_err, 3696 "nvdimm device hot unplug is not supported yet."); 3697 goto out; 3698 } 3699 3700 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &error_abort); 3701 nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3702 3703 addr_start = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3704 &local_err); 3705 if (local_err) { 3706 goto out; 3707 } 3708 3709 /* 3710 * An existing pending dimm state for this DIMM means that there is an 3711 * unplug operation in progress, waiting for the spapr_lmb_release 3712 * callback to complete the job (BQL can't cover that far). In this case, 3713 * bail out to avoid detaching DRCs that were already released. 3714 */ 3715 if (spapr_pending_dimm_unplugs_find(spapr, dimm)) { 3716 error_setg(&local_err, 3717 "Memory unplug already in progress for device %s", 3718 dev->id); 3719 goto out; 3720 } 3721 3722 spapr_pending_dimm_unplugs_add(spapr, nr_lmbs, dimm); 3723 3724 addr = addr_start; 3725 for (i = 0; i < nr_lmbs; i++) { 3726 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3727 addr / SPAPR_MEMORY_BLOCK_SIZE); 3728 g_assert(drc); 3729 3730 spapr_drc_detach(drc); 3731 addr += SPAPR_MEMORY_BLOCK_SIZE; 3732 } 3733 3734 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3735 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3736 spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3737 nr_lmbs, spapr_drc_index(drc)); 3738 out: 3739 error_propagate(errp, local_err); 3740 } 3741 3742 /* Callback to be called during DRC release. */ 3743 void spapr_core_release(DeviceState *dev) 3744 { 3745 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3746 3747 /* Call the unplug handler chain. This can never fail. */ 3748 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3749 object_unparent(OBJECT(dev)); 3750 } 3751 3752 static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3753 { 3754 MachineState *ms = MACHINE(hotplug_dev); 3755 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms); 3756 CPUCore *cc = CPU_CORE(dev); 3757 CPUArchId *core_slot = spapr_find_cpu_slot(ms, cc->core_id, NULL); 3758 3759 if (smc->pre_2_10_has_unused_icps) { 3760 SpaprCpuCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); 3761 int i; 3762 3763 for (i = 0; i < cc->nr_threads; i++) { 3764 CPUState *cs = CPU(sc->threads[i]); 3765 3766 pre_2_10_vmstate_register_dummy_icp(cs->cpu_index); 3767 } 3768 } 3769 3770 assert(core_slot); 3771 core_slot->cpu = NULL; 3772 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 3773 } 3774 3775 static 3776 void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, 3777 Error **errp) 3778 { 3779 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3780 int index; 3781 SpaprDrc *drc; 3782 CPUCore *cc = CPU_CORE(dev); 3783 3784 if (!spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index)) { 3785 error_setg(errp, "Unable to find CPU core with core-id: %d", 3786 cc->core_id); 3787 return; 3788 } 3789 if (index == 0) { 3790 error_setg(errp, "Boot CPU core may not be unplugged"); 3791 return; 3792 } 3793 3794 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3795 spapr_vcpu_id(spapr, cc->core_id)); 3796 g_assert(drc); 3797 3798 if (!spapr_drc_unplug_requested(drc)) { 3799 spapr_drc_detach(drc); 3800 spapr_hotplug_req_remove_by_index(drc); 3801 } 3802 } 3803 3804 int spapr_core_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3805 void *fdt, int *fdt_start_offset, Error **errp) 3806 { 3807 SpaprCpuCore *core = SPAPR_CPU_CORE(drc->dev); 3808 CPUState *cs = CPU(core->threads[0]); 3809 PowerPCCPU *cpu = POWERPC_CPU(cs); 3810 DeviceClass *dc = DEVICE_GET_CLASS(cs); 3811 int id = spapr_get_vcpu_id(cpu); 3812 char *nodename; 3813 int offset; 3814 3815 nodename = g_strdup_printf("%s@%x", dc->fw_name, id); 3816 offset = fdt_add_subnode(fdt, 0, nodename); 3817 g_free(nodename); 3818 3819 spapr_populate_cpu_dt(cs, fdt, offset, spapr); 3820 3821 *fdt_start_offset = offset; 3822 return 0; 3823 } 3824 3825 static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3826 Error **errp) 3827 { 3828 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3829 MachineClass *mc = MACHINE_GET_CLASS(spapr); 3830 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 3831 SpaprCpuCore *core = SPAPR_CPU_CORE(OBJECT(dev)); 3832 CPUCore *cc = CPU_CORE(dev); 3833 CPUState *cs; 3834 SpaprDrc *drc; 3835 Error *local_err = NULL; 3836 CPUArchId *core_slot; 3837 int index; 3838 bool hotplugged = spapr_drc_hotplugged(dev); 3839 int i; 3840 3841 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3842 if (!core_slot) { 3843 error_setg(errp, "Unable to find CPU core with core-id: %d", 3844 cc->core_id); 3845 return; 3846 } 3847 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3848 spapr_vcpu_id(spapr, cc->core_id)); 3849 3850 g_assert(drc || !mc->has_hotpluggable_cpus); 3851 3852 if (drc) { 3853 spapr_drc_attach(drc, dev, &local_err); 3854 if (local_err) { 3855 error_propagate(errp, local_err); 3856 return; 3857 } 3858 3859 if (hotplugged) { 3860 /* 3861 * Send hotplug notification interrupt to the guest only 3862 * in case of hotplugged CPUs. 3863 */ 3864 spapr_hotplug_req_add_by_index(drc); 3865 } else { 3866 spapr_drc_reset(drc); 3867 } 3868 } 3869 3870 core_slot->cpu = OBJECT(dev); 3871 3872 if (smc->pre_2_10_has_unused_icps) { 3873 for (i = 0; i < cc->nr_threads; i++) { 3874 cs = CPU(core->threads[i]); 3875 pre_2_10_vmstate_unregister_dummy_icp(cs->cpu_index); 3876 } 3877 } 3878 3879 /* 3880 * Set compatibility mode to match the boot CPU, which was either set 3881 * by the machine reset code or by CAS. 3882 */ 3883 if (hotplugged) { 3884 for (i = 0; i < cc->nr_threads; i++) { 3885 ppc_set_compat(core->threads[i], POWERPC_CPU(first_cpu)->compat_pvr, 3886 &local_err); 3887 if (local_err) { 3888 error_propagate(errp, local_err); 3889 return; 3890 } 3891 } 3892 } 3893 } 3894 3895 static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3896 Error **errp) 3897 { 3898 MachineState *machine = MACHINE(OBJECT(hotplug_dev)); 3899 MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev); 3900 Error *local_err = NULL; 3901 CPUCore *cc = CPU_CORE(dev); 3902 const char *base_core_type = spapr_get_cpu_core_type(machine->cpu_type); 3903 const char *type = object_get_typename(OBJECT(dev)); 3904 CPUArchId *core_slot; 3905 int index; 3906 unsigned int smp_threads = machine->smp.threads; 3907 3908 if (dev->hotplugged && !mc->has_hotpluggable_cpus) { 3909 error_setg(&local_err, "CPU hotplug not supported for this machine"); 3910 goto out; 3911 } 3912 3913 if (strcmp(base_core_type, type)) { 3914 error_setg(&local_err, "CPU core type should be %s", base_core_type); 3915 goto out; 3916 } 3917 3918 if (cc->core_id % smp_threads) { 3919 error_setg(&local_err, "invalid core id %d", cc->core_id); 3920 goto out; 3921 } 3922 3923 /* 3924 * In general we should have homogeneous threads-per-core, but old 3925 * (pre hotplug support) machine types allow the last core to have 3926 * reduced threads as a compatibility hack for when we allowed 3927 * total vcpus not a multiple of threads-per-core. 3928 */ 3929 if (mc->has_hotpluggable_cpus && (cc->nr_threads != smp_threads)) { 3930 error_setg(&local_err, "invalid nr-threads %d, must be %d", 3931 cc->nr_threads, smp_threads); 3932 goto out; 3933 } 3934 3935 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3936 if (!core_slot) { 3937 error_setg(&local_err, "core id %d out of range", cc->core_id); 3938 goto out; 3939 } 3940 3941 if (core_slot->cpu) { 3942 error_setg(&local_err, "core %d already populated", cc->core_id); 3943 goto out; 3944 } 3945 3946 numa_cpu_pre_plug(core_slot, dev, &local_err); 3947 3948 out: 3949 error_propagate(errp, local_err); 3950 } 3951 3952 int spapr_phb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3953 void *fdt, int *fdt_start_offset, Error **errp) 3954 { 3955 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(drc->dev); 3956 int intc_phandle; 3957 3958 intc_phandle = spapr_irq_get_phandle(spapr, spapr->fdt_blob, errp); 3959 if (intc_phandle <= 0) { 3960 return -1; 3961 } 3962 3963 if (spapr_dt_phb(spapr, sphb, intc_phandle, fdt, fdt_start_offset)) { 3964 error_setg(errp, "unable to create FDT node for PHB %d", sphb->index); 3965 return -1; 3966 } 3967 3968 /* generally SLOF creates these, for hotplug it's up to QEMU */ 3969 _FDT(fdt_setprop_string(fdt, *fdt_start_offset, "name", "pci")); 3970 3971 return 0; 3972 } 3973 3974 static void spapr_phb_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3975 Error **errp) 3976 { 3977 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3978 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 3979 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3980 const unsigned windows_supported = spapr_phb_windows_supported(sphb); 3981 3982 if (dev->hotplugged && !smc->dr_phb_enabled) { 3983 error_setg(errp, "PHB hotplug not supported for this machine"); 3984 return; 3985 } 3986 3987 if (sphb->index == (uint32_t)-1) { 3988 error_setg(errp, "\"index\" for PAPR PHB is mandatory"); 3989 return; 3990 } 3991 3992 /* 3993 * This will check that sphb->index doesn't exceed the maximum number of 3994 * PHBs for the current machine type. 3995 */ 3996 smc->phb_placement(spapr, sphb->index, 3997 &sphb->buid, &sphb->io_win_addr, 3998 &sphb->mem_win_addr, &sphb->mem64_win_addr, 3999 windows_supported, sphb->dma_liobn, 4000 &sphb->nv2_gpa_win_addr, &sphb->nv2_atsd_win_addr, 4001 errp); 4002 } 4003 4004 static void spapr_phb_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 4005 Error **errp) 4006 { 4007 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4008 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 4009 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 4010 SpaprDrc *drc; 4011 bool hotplugged = spapr_drc_hotplugged(dev); 4012 Error *local_err = NULL; 4013 4014 if (!smc->dr_phb_enabled) { 4015 return; 4016 } 4017 4018 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 4019 /* hotplug hooks should check it's enabled before getting this far */ 4020 assert(drc); 4021 4022 spapr_drc_attach(drc, DEVICE(dev), &local_err); 4023 if (local_err) { 4024 error_propagate(errp, local_err); 4025 return; 4026 } 4027 4028 if (hotplugged) { 4029 spapr_hotplug_req_add_by_index(drc); 4030 } else { 4031 spapr_drc_reset(drc); 4032 } 4033 } 4034 4035 void spapr_phb_release(DeviceState *dev) 4036 { 4037 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 4038 4039 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 4040 object_unparent(OBJECT(dev)); 4041 } 4042 4043 static void spapr_phb_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 4044 { 4045 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 4046 } 4047 4048 static void spapr_phb_unplug_request(HotplugHandler *hotplug_dev, 4049 DeviceState *dev, Error **errp) 4050 { 4051 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 4052 SpaprDrc *drc; 4053 4054 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 4055 assert(drc); 4056 4057 if (!spapr_drc_unplug_requested(drc)) { 4058 spapr_drc_detach(drc); 4059 spapr_hotplug_req_remove_by_index(drc); 4060 } 4061 } 4062 4063 static void spapr_tpm_proxy_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 4064 Error **errp) 4065 { 4066 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4067 SpaprTpmProxy *tpm_proxy = SPAPR_TPM_PROXY(dev); 4068 4069 if (spapr->tpm_proxy != NULL) { 4070 error_setg(errp, "Only one TPM proxy can be specified for this machine"); 4071 return; 4072 } 4073 4074 spapr->tpm_proxy = tpm_proxy; 4075 } 4076 4077 static void spapr_tpm_proxy_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 4078 { 4079 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4080 4081 object_property_set_bool(OBJECT(dev), false, "realized", NULL); 4082 object_unparent(OBJECT(dev)); 4083 spapr->tpm_proxy = NULL; 4084 } 4085 4086 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, 4087 DeviceState *dev, Error **errp) 4088 { 4089 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4090 spapr_memory_plug(hotplug_dev, dev, errp); 4091 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4092 spapr_core_plug(hotplug_dev, dev, errp); 4093 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4094 spapr_phb_plug(hotplug_dev, dev, errp); 4095 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4096 spapr_tpm_proxy_plug(hotplug_dev, dev, errp); 4097 } 4098 } 4099 4100 static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, 4101 DeviceState *dev, Error **errp) 4102 { 4103 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4104 spapr_memory_unplug(hotplug_dev, dev); 4105 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4106 spapr_core_unplug(hotplug_dev, dev); 4107 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4108 spapr_phb_unplug(hotplug_dev, dev); 4109 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4110 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4111 } 4112 } 4113 4114 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, 4115 DeviceState *dev, Error **errp) 4116 { 4117 SpaprMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4118 MachineClass *mc = MACHINE_GET_CLASS(sms); 4119 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4120 4121 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4122 if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { 4123 spapr_memory_unplug_request(hotplug_dev, dev, errp); 4124 } else { 4125 /* NOTE: this means there is a window after guest reset, prior to 4126 * CAS negotiation, where unplug requests will fail due to the 4127 * capability not being detected yet. This is a bit different than 4128 * the case with PCI unplug, where the events will be queued and 4129 * eventually handled by the guest after boot 4130 */ 4131 error_setg(errp, "Memory hot unplug not supported for this guest"); 4132 } 4133 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4134 if (!mc->has_hotpluggable_cpus) { 4135 error_setg(errp, "CPU hot unplug not supported on this machine"); 4136 return; 4137 } 4138 spapr_core_unplug_request(hotplug_dev, dev, errp); 4139 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4140 if (!smc->dr_phb_enabled) { 4141 error_setg(errp, "PHB hot unplug not supported on this machine"); 4142 return; 4143 } 4144 spapr_phb_unplug_request(hotplug_dev, dev, errp); 4145 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4146 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4147 } 4148 } 4149 4150 static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev, 4151 DeviceState *dev, Error **errp) 4152 { 4153 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4154 spapr_memory_pre_plug(hotplug_dev, dev, errp); 4155 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4156 spapr_core_pre_plug(hotplug_dev, dev, errp); 4157 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4158 spapr_phb_pre_plug(hotplug_dev, dev, errp); 4159 } 4160 } 4161 4162 static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine, 4163 DeviceState *dev) 4164 { 4165 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || 4166 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE) || 4167 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE) || 4168 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4169 return HOTPLUG_HANDLER(machine); 4170 } 4171 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 4172 PCIDevice *pcidev = PCI_DEVICE(dev); 4173 PCIBus *root = pci_device_root_bus(pcidev); 4174 SpaprPhbState *phb = 4175 (SpaprPhbState *)object_dynamic_cast(OBJECT(BUS(root)->parent), 4176 TYPE_SPAPR_PCI_HOST_BRIDGE); 4177 4178 if (phb) { 4179 return HOTPLUG_HANDLER(phb); 4180 } 4181 } 4182 return NULL; 4183 } 4184 4185 static CpuInstanceProperties 4186 spapr_cpu_index_to_props(MachineState *machine, unsigned cpu_index) 4187 { 4188 CPUArchId *core_slot; 4189 MachineClass *mc = MACHINE_GET_CLASS(machine); 4190 4191 /* make sure possible_cpu are intialized */ 4192 mc->possible_cpu_arch_ids(machine); 4193 /* get CPU core slot containing thread that matches cpu_index */ 4194 core_slot = spapr_find_cpu_slot(machine, cpu_index, NULL); 4195 assert(core_slot); 4196 return core_slot->props; 4197 } 4198 4199 static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx) 4200 { 4201 return idx / ms->smp.cores % ms->numa_state->num_nodes; 4202 } 4203 4204 static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine) 4205 { 4206 int i; 4207 unsigned int smp_threads = machine->smp.threads; 4208 unsigned int smp_cpus = machine->smp.cpus; 4209 const char *core_type; 4210 int spapr_max_cores = machine->smp.max_cpus / smp_threads; 4211 MachineClass *mc = MACHINE_GET_CLASS(machine); 4212 4213 if (!mc->has_hotpluggable_cpus) { 4214 spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads; 4215 } 4216 if (machine->possible_cpus) { 4217 assert(machine->possible_cpus->len == spapr_max_cores); 4218 return machine->possible_cpus; 4219 } 4220 4221 core_type = spapr_get_cpu_core_type(machine->cpu_type); 4222 if (!core_type) { 4223 error_report("Unable to find sPAPR CPU Core definition"); 4224 exit(1); 4225 } 4226 4227 machine->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + 4228 sizeof(CPUArchId) * spapr_max_cores); 4229 machine->possible_cpus->len = spapr_max_cores; 4230 for (i = 0; i < machine->possible_cpus->len; i++) { 4231 int core_id = i * smp_threads; 4232 4233 machine->possible_cpus->cpus[i].type = core_type; 4234 machine->possible_cpus->cpus[i].vcpus_count = smp_threads; 4235 machine->possible_cpus->cpus[i].arch_id = core_id; 4236 machine->possible_cpus->cpus[i].props.has_core_id = true; 4237 machine->possible_cpus->cpus[i].props.core_id = core_id; 4238 } 4239 return machine->possible_cpus; 4240 } 4241 4242 static void spapr_phb_placement(SpaprMachineState *spapr, uint32_t index, 4243 uint64_t *buid, hwaddr *pio, 4244 hwaddr *mmio32, hwaddr *mmio64, 4245 unsigned n_dma, uint32_t *liobns, 4246 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4247 { 4248 /* 4249 * New-style PHB window placement. 4250 * 4251 * Goals: Gives large (1TiB), naturally aligned 64-bit MMIO window 4252 * for each PHB, in addition to 2GiB 32-bit MMIO and 64kiB PIO 4253 * windows. 4254 * 4255 * Some guest kernels can't work with MMIO windows above 1<<46 4256 * (64TiB), so we place up to 31 PHBs in the area 32TiB..64TiB 4257 * 4258 * 32TiB..(33TiB+1984kiB) contains the 64kiB PIO windows for each 4259 * PHB stacked together. (32TiB+2GiB)..(32TiB+64GiB) contains the 4260 * 2GiB 32-bit MMIO windows for each PHB. Then 33..64TiB has the 4261 * 1TiB 64-bit MMIO windows for each PHB. 4262 */ 4263 const uint64_t base_buid = 0x800000020000000ULL; 4264 int i; 4265 4266 /* Sanity check natural alignments */ 4267 QEMU_BUILD_BUG_ON((SPAPR_PCI_BASE % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4268 QEMU_BUILD_BUG_ON((SPAPR_PCI_LIMIT % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4269 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM64_WIN_SIZE % SPAPR_PCI_MEM32_WIN_SIZE) != 0); 4270 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM32_WIN_SIZE % SPAPR_PCI_IO_WIN_SIZE) != 0); 4271 /* Sanity check bounds */ 4272 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_IO_WIN_SIZE) > 4273 SPAPR_PCI_MEM32_WIN_SIZE); 4274 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_MEM32_WIN_SIZE) > 4275 SPAPR_PCI_MEM64_WIN_SIZE); 4276 4277 if (index >= SPAPR_MAX_PHBS) { 4278 error_setg(errp, "\"index\" for PAPR PHB is too large (max %llu)", 4279 SPAPR_MAX_PHBS - 1); 4280 return; 4281 } 4282 4283 *buid = base_buid + index; 4284 for (i = 0; i < n_dma; ++i) { 4285 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4286 } 4287 4288 *pio = SPAPR_PCI_BASE + index * SPAPR_PCI_IO_WIN_SIZE; 4289 *mmio32 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM32_WIN_SIZE; 4290 *mmio64 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM64_WIN_SIZE; 4291 4292 *nv2gpa = SPAPR_PCI_NV2RAM64_WIN_BASE + index * SPAPR_PCI_NV2RAM64_WIN_SIZE; 4293 *nv2atsd = SPAPR_PCI_NV2ATSD_WIN_BASE + index * SPAPR_PCI_NV2ATSD_WIN_SIZE; 4294 } 4295 4296 static ICSState *spapr_ics_get(XICSFabric *dev, int irq) 4297 { 4298 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4299 4300 return ics_valid_irq(spapr->ics, irq) ? spapr->ics : NULL; 4301 } 4302 4303 static void spapr_ics_resend(XICSFabric *dev) 4304 { 4305 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4306 4307 ics_resend(spapr->ics); 4308 } 4309 4310 static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) 4311 { 4312 PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); 4313 4314 return cpu ? spapr_cpu_state(cpu)->icp : NULL; 4315 } 4316 4317 static void spapr_pic_print_info(InterruptStatsProvider *obj, 4318 Monitor *mon) 4319 { 4320 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 4321 4322 spapr_irq_print_info(spapr, mon); 4323 monitor_printf(mon, "irqchip: %s\n", 4324 kvm_irqchip_in_kernel() ? "in-kernel" : "emulated"); 4325 } 4326 4327 /* 4328 * This is a XIVE only operation 4329 */ 4330 static int spapr_match_nvt(XiveFabric *xfb, uint8_t format, 4331 uint8_t nvt_blk, uint32_t nvt_idx, 4332 bool cam_ignore, uint8_t priority, 4333 uint32_t logic_serv, XiveTCTXMatch *match) 4334 { 4335 SpaprMachineState *spapr = SPAPR_MACHINE(xfb); 4336 XivePresenter *xptr = XIVE_PRESENTER(spapr->active_intc); 4337 XivePresenterClass *xpc = XIVE_PRESENTER_GET_CLASS(xptr); 4338 int count; 4339 4340 count = xpc->match_nvt(xptr, format, nvt_blk, nvt_idx, cam_ignore, 4341 priority, logic_serv, match); 4342 if (count < 0) { 4343 return count; 4344 } 4345 4346 /* 4347 * When we implement the save and restore of the thread interrupt 4348 * contexts in the enter/exit CPU handlers of the machine and the 4349 * escalations in QEMU, we should be able to handle non dispatched 4350 * vCPUs. 4351 * 4352 * Until this is done, the sPAPR machine should find at least one 4353 * matching context always. 4354 */ 4355 if (count == 0) { 4356 qemu_log_mask(LOG_GUEST_ERROR, "XIVE: NVT %x/%x is not dispatched\n", 4357 nvt_blk, nvt_idx); 4358 } 4359 4360 return count; 4361 } 4362 4363 int spapr_get_vcpu_id(PowerPCCPU *cpu) 4364 { 4365 return cpu->vcpu_id; 4366 } 4367 4368 void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp) 4369 { 4370 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 4371 MachineState *ms = MACHINE(spapr); 4372 int vcpu_id; 4373 4374 vcpu_id = spapr_vcpu_id(spapr, cpu_index); 4375 4376 if (kvm_enabled() && !kvm_vcpu_id_is_valid(vcpu_id)) { 4377 error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id); 4378 error_append_hint(errp, "Adjust the number of cpus to %d " 4379 "or try to raise the number of threads per core\n", 4380 vcpu_id * ms->smp.threads / spapr->vsmt); 4381 return; 4382 } 4383 4384 cpu->vcpu_id = vcpu_id; 4385 } 4386 4387 PowerPCCPU *spapr_find_cpu(int vcpu_id) 4388 { 4389 CPUState *cs; 4390 4391 CPU_FOREACH(cs) { 4392 PowerPCCPU *cpu = POWERPC_CPU(cs); 4393 4394 if (spapr_get_vcpu_id(cpu) == vcpu_id) { 4395 return cpu; 4396 } 4397 } 4398 4399 return NULL; 4400 } 4401 4402 static void spapr_cpu_exec_enter(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4403 { 4404 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4405 4406 /* These are only called by TCG, KVM maintains dispatch state */ 4407 4408 spapr_cpu->prod = false; 4409 if (spapr_cpu->vpa_addr) { 4410 CPUState *cs = CPU(cpu); 4411 uint32_t dispatch; 4412 4413 dispatch = ldl_be_phys(cs->as, 4414 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4415 dispatch++; 4416 if ((dispatch & 1) != 0) { 4417 qemu_log_mask(LOG_GUEST_ERROR, 4418 "VPA: incorrect dispatch counter value for " 4419 "dispatched partition %u, correcting.\n", dispatch); 4420 dispatch++; 4421 } 4422 stl_be_phys(cs->as, 4423 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4424 } 4425 } 4426 4427 static void spapr_cpu_exec_exit(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4428 { 4429 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4430 4431 if (spapr_cpu->vpa_addr) { 4432 CPUState *cs = CPU(cpu); 4433 uint32_t dispatch; 4434 4435 dispatch = ldl_be_phys(cs->as, 4436 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4437 dispatch++; 4438 if ((dispatch & 1) != 1) { 4439 qemu_log_mask(LOG_GUEST_ERROR, 4440 "VPA: incorrect dispatch counter value for " 4441 "preempted partition %u, correcting.\n", dispatch); 4442 dispatch++; 4443 } 4444 stl_be_phys(cs->as, 4445 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4446 } 4447 } 4448 4449 static void spapr_machine_class_init(ObjectClass *oc, void *data) 4450 { 4451 MachineClass *mc = MACHINE_CLASS(oc); 4452 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 4453 FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); 4454 NMIClass *nc = NMI_CLASS(oc); 4455 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 4456 PPCVirtualHypervisorClass *vhc = PPC_VIRTUAL_HYPERVISOR_CLASS(oc); 4457 XICSFabricClass *xic = XICS_FABRIC_CLASS(oc); 4458 InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); 4459 XiveFabricClass *xfc = XIVE_FABRIC_CLASS(oc); 4460 4461 mc->desc = "pSeries Logical Partition (PAPR compliant)"; 4462 mc->ignore_boot_device_suffixes = true; 4463 4464 /* 4465 * We set up the default / latest behaviour here. The class_init 4466 * functions for the specific versioned machine types can override 4467 * these details for backwards compatibility 4468 */ 4469 mc->init = spapr_machine_init; 4470 mc->reset = spapr_machine_reset; 4471 mc->block_default_type = IF_SCSI; 4472 mc->max_cpus = 1024; 4473 mc->no_parallel = 1; 4474 mc->default_boot_order = ""; 4475 mc->default_ram_size = 512 * MiB; 4476 mc->default_display = "std"; 4477 mc->kvm_type = spapr_kvm_type; 4478 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE); 4479 mc->pci_allow_0_address = true; 4480 assert(!mc->get_hotplug_handler); 4481 mc->get_hotplug_handler = spapr_get_hotplug_handler; 4482 hc->pre_plug = spapr_machine_device_pre_plug; 4483 hc->plug = spapr_machine_device_plug; 4484 mc->cpu_index_to_instance_props = spapr_cpu_index_to_props; 4485 mc->get_default_cpu_node_id = spapr_get_default_cpu_node_id; 4486 mc->possible_cpu_arch_ids = spapr_possible_cpu_arch_ids; 4487 hc->unplug_request = spapr_machine_device_unplug_request; 4488 hc->unplug = spapr_machine_device_unplug; 4489 4490 smc->dr_lmb_enabled = true; 4491 smc->update_dt_enabled = true; 4492 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0"); 4493 mc->has_hotpluggable_cpus = true; 4494 mc->nvdimm_supported = true; 4495 smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; 4496 fwc->get_dev_path = spapr_get_fw_dev_path; 4497 nc->nmi_monitor_handler = spapr_nmi; 4498 smc->phb_placement = spapr_phb_placement; 4499 vhc->hypercall = emulate_spapr_hypercall; 4500 vhc->hpt_mask = spapr_hpt_mask; 4501 vhc->map_hptes = spapr_map_hptes; 4502 vhc->unmap_hptes = spapr_unmap_hptes; 4503 vhc->hpte_set_c = spapr_hpte_set_c; 4504 vhc->hpte_set_r = spapr_hpte_set_r; 4505 vhc->get_pate = spapr_get_pate; 4506 vhc->encode_hpt_for_kvm_pr = spapr_encode_hpt_for_kvm_pr; 4507 vhc->cpu_exec_enter = spapr_cpu_exec_enter; 4508 vhc->cpu_exec_exit = spapr_cpu_exec_exit; 4509 xic->ics_get = spapr_ics_get; 4510 xic->ics_resend = spapr_ics_resend; 4511 xic->icp_get = spapr_icp_get; 4512 ispc->print_info = spapr_pic_print_info; 4513 /* Force NUMA node memory size to be a multiple of 4514 * SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the granularity 4515 * in which LMBs are represented and hot-added 4516 */ 4517 mc->numa_mem_align_shift = 28; 4518 mc->numa_mem_supported = true; 4519 mc->auto_enable_numa = true; 4520 4521 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; 4522 smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; 4523 smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; 4524 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4525 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4526 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_WORKAROUND; 4527 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ 4528 smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF; 4529 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_ON; 4530 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_ON; 4531 smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_ON; 4532 spapr_caps_add_properties(smc, &error_abort); 4533 smc->irq = &spapr_irq_dual; 4534 smc->dr_phb_enabled = true; 4535 smc->linux_pci_probe = true; 4536 smc->smp_threads_vsmt = true; 4537 smc->nr_xirqs = SPAPR_NR_XIRQS; 4538 xfc->match_nvt = spapr_match_nvt; 4539 } 4540 4541 static const TypeInfo spapr_machine_info = { 4542 .name = TYPE_SPAPR_MACHINE, 4543 .parent = TYPE_MACHINE, 4544 .abstract = true, 4545 .instance_size = sizeof(SpaprMachineState), 4546 .instance_init = spapr_instance_init, 4547 .instance_finalize = spapr_machine_finalizefn, 4548 .class_size = sizeof(SpaprMachineClass), 4549 .class_init = spapr_machine_class_init, 4550 .interfaces = (InterfaceInfo[]) { 4551 { TYPE_FW_PATH_PROVIDER }, 4552 { TYPE_NMI }, 4553 { TYPE_HOTPLUG_HANDLER }, 4554 { TYPE_PPC_VIRTUAL_HYPERVISOR }, 4555 { TYPE_XICS_FABRIC }, 4556 { TYPE_INTERRUPT_STATS_PROVIDER }, 4557 { TYPE_XIVE_FABRIC }, 4558 { } 4559 }, 4560 }; 4561 4562 static void spapr_machine_latest_class_options(MachineClass *mc) 4563 { 4564 mc->alias = "pseries"; 4565 mc->is_default = 1; 4566 } 4567 4568 #define DEFINE_SPAPR_MACHINE(suffix, verstr, latest) \ 4569 static void spapr_machine_##suffix##_class_init(ObjectClass *oc, \ 4570 void *data) \ 4571 { \ 4572 MachineClass *mc = MACHINE_CLASS(oc); \ 4573 spapr_machine_##suffix##_class_options(mc); \ 4574 if (latest) { \ 4575 spapr_machine_latest_class_options(mc); \ 4576 } \ 4577 } \ 4578 static const TypeInfo spapr_machine_##suffix##_info = { \ 4579 .name = MACHINE_TYPE_NAME("pseries-" verstr), \ 4580 .parent = TYPE_SPAPR_MACHINE, \ 4581 .class_init = spapr_machine_##suffix##_class_init, \ 4582 }; \ 4583 static void spapr_machine_register_##suffix(void) \ 4584 { \ 4585 type_register(&spapr_machine_##suffix##_info); \ 4586 } \ 4587 type_init(spapr_machine_register_##suffix) 4588 4589 /* 4590 * pseries-5.0 4591 */ 4592 static void spapr_machine_5_0_class_options(MachineClass *mc) 4593 { 4594 /* Defaults for the latest behaviour inherited from the base class */ 4595 } 4596 4597 DEFINE_SPAPR_MACHINE(5_0, "5.0", true); 4598 4599 /* 4600 * pseries-4.2 4601 */ 4602 static void spapr_machine_4_2_class_options(MachineClass *mc) 4603 { 4604 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4605 4606 spapr_machine_5_0_class_options(mc); 4607 compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len); 4608 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_OFF; 4609 smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_OFF; 4610 mc->nvdimm_supported = false; 4611 } 4612 4613 DEFINE_SPAPR_MACHINE(4_2, "4.2", false); 4614 4615 /* 4616 * pseries-4.1 4617 */ 4618 static void spapr_machine_4_1_class_options(MachineClass *mc) 4619 { 4620 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4621 static GlobalProperty compat[] = { 4622 /* Only allow 4kiB and 64kiB IOMMU pagesizes */ 4623 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pgsz", "0x11000" }, 4624 }; 4625 4626 spapr_machine_4_2_class_options(mc); 4627 smc->linux_pci_probe = false; 4628 smc->smp_threads_vsmt = false; 4629 compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len); 4630 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4631 } 4632 4633 DEFINE_SPAPR_MACHINE(4_1, "4.1", false); 4634 4635 /* 4636 * pseries-4.0 4637 */ 4638 static void phb_placement_4_0(SpaprMachineState *spapr, uint32_t index, 4639 uint64_t *buid, hwaddr *pio, 4640 hwaddr *mmio32, hwaddr *mmio64, 4641 unsigned n_dma, uint32_t *liobns, 4642 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4643 { 4644 spapr_phb_placement(spapr, index, buid, pio, mmio32, mmio64, n_dma, liobns, 4645 nv2gpa, nv2atsd, errp); 4646 *nv2gpa = 0; 4647 *nv2atsd = 0; 4648 } 4649 4650 static void spapr_machine_4_0_class_options(MachineClass *mc) 4651 { 4652 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4653 4654 spapr_machine_4_1_class_options(mc); 4655 compat_props_add(mc->compat_props, hw_compat_4_0, hw_compat_4_0_len); 4656 smc->phb_placement = phb_placement_4_0; 4657 smc->irq = &spapr_irq_xics; 4658 smc->pre_4_1_migration = true; 4659 } 4660 4661 DEFINE_SPAPR_MACHINE(4_0, "4.0", false); 4662 4663 /* 4664 * pseries-3.1 4665 */ 4666 static void spapr_machine_3_1_class_options(MachineClass *mc) 4667 { 4668 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4669 4670 spapr_machine_4_0_class_options(mc); 4671 compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len); 4672 4673 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); 4674 smc->update_dt_enabled = false; 4675 smc->dr_phb_enabled = false; 4676 smc->broken_host_serial_model = true; 4677 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; 4678 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; 4679 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; 4680 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_OFF; 4681 } 4682 4683 DEFINE_SPAPR_MACHINE(3_1, "3.1", false); 4684 4685 /* 4686 * pseries-3.0 4687 */ 4688 4689 static void spapr_machine_3_0_class_options(MachineClass *mc) 4690 { 4691 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4692 4693 spapr_machine_3_1_class_options(mc); 4694 compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len); 4695 4696 smc->legacy_irq_allocation = true; 4697 smc->nr_xirqs = 0x400; 4698 smc->irq = &spapr_irq_xics_legacy; 4699 } 4700 4701 DEFINE_SPAPR_MACHINE(3_0, "3.0", false); 4702 4703 /* 4704 * pseries-2.12 4705 */ 4706 static void spapr_machine_2_12_class_options(MachineClass *mc) 4707 { 4708 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4709 static GlobalProperty compat[] = { 4710 { TYPE_POWERPC_CPU, "pre-3.0-migration", "on" }, 4711 { TYPE_SPAPR_CPU_CORE, "pre-3.0-migration", "on" }, 4712 }; 4713 4714 spapr_machine_3_0_class_options(mc); 4715 compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len); 4716 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4717 4718 /* We depend on kvm_enabled() to choose a default value for the 4719 * hpt-max-page-size capability. Of course we can't do it here 4720 * because this is too early and the HW accelerator isn't initialzed 4721 * yet. Postpone this to machine init (see default_caps_with_cpu()). 4722 */ 4723 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 0; 4724 } 4725 4726 DEFINE_SPAPR_MACHINE(2_12, "2.12", false); 4727 4728 static void spapr_machine_2_12_sxxm_class_options(MachineClass *mc) 4729 { 4730 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4731 4732 spapr_machine_2_12_class_options(mc); 4733 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4734 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4735 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD; 4736 } 4737 4738 DEFINE_SPAPR_MACHINE(2_12_sxxm, "2.12-sxxm", false); 4739 4740 /* 4741 * pseries-2.11 4742 */ 4743 4744 static void spapr_machine_2_11_class_options(MachineClass *mc) 4745 { 4746 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4747 4748 spapr_machine_2_12_class_options(mc); 4749 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; 4750 compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len); 4751 } 4752 4753 DEFINE_SPAPR_MACHINE(2_11, "2.11", false); 4754 4755 /* 4756 * pseries-2.10 4757 */ 4758 4759 static void spapr_machine_2_10_class_options(MachineClass *mc) 4760 { 4761 spapr_machine_2_11_class_options(mc); 4762 compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len); 4763 } 4764 4765 DEFINE_SPAPR_MACHINE(2_10, "2.10", false); 4766 4767 /* 4768 * pseries-2.9 4769 */ 4770 4771 static void spapr_machine_2_9_class_options(MachineClass *mc) 4772 { 4773 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4774 static GlobalProperty compat[] = { 4775 { TYPE_POWERPC_CPU, "pre-2.10-migration", "on" }, 4776 }; 4777 4778 spapr_machine_2_10_class_options(mc); 4779 compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len); 4780 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4781 mc->numa_auto_assign_ram = numa_legacy_auto_assign_ram; 4782 smc->pre_2_10_has_unused_icps = true; 4783 smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED; 4784 } 4785 4786 DEFINE_SPAPR_MACHINE(2_9, "2.9", false); 4787 4788 /* 4789 * pseries-2.8 4790 */ 4791 4792 static void spapr_machine_2_8_class_options(MachineClass *mc) 4793 { 4794 static GlobalProperty compat[] = { 4795 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pcie-extended-configuration-space", "off" }, 4796 }; 4797 4798 spapr_machine_2_9_class_options(mc); 4799 compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len); 4800 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4801 mc->numa_mem_align_shift = 23; 4802 } 4803 4804 DEFINE_SPAPR_MACHINE(2_8, "2.8", false); 4805 4806 /* 4807 * pseries-2.7 4808 */ 4809 4810 static void phb_placement_2_7(SpaprMachineState *spapr, uint32_t index, 4811 uint64_t *buid, hwaddr *pio, 4812 hwaddr *mmio32, hwaddr *mmio64, 4813 unsigned n_dma, uint32_t *liobns, 4814 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4815 { 4816 /* Legacy PHB placement for pseries-2.7 and earlier machine types */ 4817 const uint64_t base_buid = 0x800000020000000ULL; 4818 const hwaddr phb_spacing = 0x1000000000ULL; /* 64 GiB */ 4819 const hwaddr mmio_offset = 0xa0000000; /* 2 GiB + 512 MiB */ 4820 const hwaddr pio_offset = 0x80000000; /* 2 GiB */ 4821 const uint32_t max_index = 255; 4822 const hwaddr phb0_alignment = 0x10000000000ULL; /* 1 TiB */ 4823 4824 uint64_t ram_top = MACHINE(spapr)->ram_size; 4825 hwaddr phb0_base, phb_base; 4826 int i; 4827 4828 /* Do we have device memory? */ 4829 if (MACHINE(spapr)->maxram_size > ram_top) { 4830 /* Can't just use maxram_size, because there may be an 4831 * alignment gap between normal and device memory regions 4832 */ 4833 ram_top = MACHINE(spapr)->device_memory->base + 4834 memory_region_size(&MACHINE(spapr)->device_memory->mr); 4835 } 4836 4837 phb0_base = QEMU_ALIGN_UP(ram_top, phb0_alignment); 4838 4839 if (index > max_index) { 4840 error_setg(errp, "\"index\" for PAPR PHB is too large (max %u)", 4841 max_index); 4842 return; 4843 } 4844 4845 *buid = base_buid + index; 4846 for (i = 0; i < n_dma; ++i) { 4847 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4848 } 4849 4850 phb_base = phb0_base + index * phb_spacing; 4851 *pio = phb_base + pio_offset; 4852 *mmio32 = phb_base + mmio_offset; 4853 /* 4854 * We don't set the 64-bit MMIO window, relying on the PHB's 4855 * fallback behaviour of automatically splitting a large "32-bit" 4856 * window into contiguous 32-bit and 64-bit windows 4857 */ 4858 4859 *nv2gpa = 0; 4860 *nv2atsd = 0; 4861 } 4862 4863 static void spapr_machine_2_7_class_options(MachineClass *mc) 4864 { 4865 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4866 static GlobalProperty compat[] = { 4867 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0xf80000000", }, 4868 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem64_win_size", "0", }, 4869 { TYPE_POWERPC_CPU, "pre-2.8-migration", "on", }, 4870 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pre-2.8-migration", "on", }, 4871 }; 4872 4873 spapr_machine_2_8_class_options(mc); 4874 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power7_v2.3"); 4875 mc->default_machine_opts = "modern-hotplug-events=off"; 4876 compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len); 4877 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4878 smc->phb_placement = phb_placement_2_7; 4879 } 4880 4881 DEFINE_SPAPR_MACHINE(2_7, "2.7", false); 4882 4883 /* 4884 * pseries-2.6 4885 */ 4886 4887 static void spapr_machine_2_6_class_options(MachineClass *mc) 4888 { 4889 static GlobalProperty compat[] = { 4890 { TYPE_SPAPR_PCI_HOST_BRIDGE, "ddw", "off" }, 4891 }; 4892 4893 spapr_machine_2_7_class_options(mc); 4894 mc->has_hotpluggable_cpus = false; 4895 compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len); 4896 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4897 } 4898 4899 DEFINE_SPAPR_MACHINE(2_6, "2.6", false); 4900 4901 /* 4902 * pseries-2.5 4903 */ 4904 4905 static void spapr_machine_2_5_class_options(MachineClass *mc) 4906 { 4907 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4908 static GlobalProperty compat[] = { 4909 { "spapr-vlan", "use-rx-buffer-pools", "off" }, 4910 }; 4911 4912 spapr_machine_2_6_class_options(mc); 4913 smc->use_ohci_by_default = true; 4914 compat_props_add(mc->compat_props, hw_compat_2_5, hw_compat_2_5_len); 4915 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4916 } 4917 4918 DEFINE_SPAPR_MACHINE(2_5, "2.5", false); 4919 4920 /* 4921 * pseries-2.4 4922 */ 4923 4924 static void spapr_machine_2_4_class_options(MachineClass *mc) 4925 { 4926 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4927 4928 spapr_machine_2_5_class_options(mc); 4929 smc->dr_lmb_enabled = false; 4930 compat_props_add(mc->compat_props, hw_compat_2_4, hw_compat_2_4_len); 4931 } 4932 4933 DEFINE_SPAPR_MACHINE(2_4, "2.4", false); 4934 4935 /* 4936 * pseries-2.3 4937 */ 4938 4939 static void spapr_machine_2_3_class_options(MachineClass *mc) 4940 { 4941 static GlobalProperty compat[] = { 4942 { "spapr-pci-host-bridge", "dynamic-reconfiguration", "off" }, 4943 }; 4944 spapr_machine_2_4_class_options(mc); 4945 compat_props_add(mc->compat_props, hw_compat_2_3, hw_compat_2_3_len); 4946 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4947 } 4948 DEFINE_SPAPR_MACHINE(2_3, "2.3", false); 4949 4950 /* 4951 * pseries-2.2 4952 */ 4953 4954 static void spapr_machine_2_2_class_options(MachineClass *mc) 4955 { 4956 static GlobalProperty compat[] = { 4957 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0x20000000" }, 4958 }; 4959 4960 spapr_machine_2_3_class_options(mc); 4961 compat_props_add(mc->compat_props, hw_compat_2_2, hw_compat_2_2_len); 4962 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4963 mc->default_machine_opts = "modern-hotplug-events=off,suppress-vmdesc=on"; 4964 } 4965 DEFINE_SPAPR_MACHINE(2_2, "2.2", false); 4966 4967 /* 4968 * pseries-2.1 4969 */ 4970 4971 static void spapr_machine_2_1_class_options(MachineClass *mc) 4972 { 4973 spapr_machine_2_2_class_options(mc); 4974 compat_props_add(mc->compat_props, hw_compat_2_1, hw_compat_2_1_len); 4975 } 4976 DEFINE_SPAPR_MACHINE(2_1, "2.1", false); 4977 4978 static void spapr_machine_register_types(void) 4979 { 4980 type_register_static(&spapr_machine_info); 4981 } 4982 4983 type_init(spapr_machine_register_types) 4984