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 #include "hw/ppc/spapr_numa.h" 85 86 #include "monitor/monitor.h" 87 88 #include <libfdt.h> 89 90 /* SLOF memory layout: 91 * 92 * SLOF raw image loaded at 0, copies its romfs right below the flat 93 * device-tree, then position SLOF itself 31M below that 94 * 95 * So we set FW_OVERHEAD to 40MB which should account for all of that 96 * and more 97 * 98 * We load our kernel at 4M, leaving space for SLOF initial image 99 */ 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 (128 * MiB) 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 void spapr_dt_pa_features(SpaprMachineState *spapr, 206 PowerPCCPU *cpu, 207 void *fdt, int offset) 208 { 209 uint8_t pa_features_206[] = { 6, 0, 210 0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 }; 211 uint8_t pa_features_207[] = { 24, 0, 212 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, 213 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 214 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 215 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }; 216 uint8_t pa_features_300[] = { 66, 0, 217 /* 0: MMU|FPU|SLB|RUN|DABR|NX, 1: fri[nzpm]|DABRX|SPRG3|SLB0|PP110 */ 218 /* 2: VPM|DS205|PPR|DS202|DS206, 3: LSD|URG, SSO, 5: LE|CFAR|EB|LSQ */ 219 0xf6, 0x1f, 0xc7, 0xc0, 0x80, 0xf0, /* 0 - 5 */ 220 /* 6: DS207 */ 221 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, /* 6 - 11 */ 222 /* 16: Vector */ 223 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, /* 12 - 17 */ 224 /* 18: Vec. Scalar, 20: Vec. XOR, 22: HTM */ 225 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 18 - 23 */ 226 /* 24: Ext. Dec, 26: 64 bit ftrs, 28: PM ftrs */ 227 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 24 - 29 */ 228 /* 30: MMR, 32: LE atomic, 34: EBB + ext EBB */ 229 0x80, 0x00, 0x80, 0x00, 0xC0, 0x00, /* 30 - 35 */ 230 /* 36: SPR SO, 38: Copy/Paste, 40: Radix MMU */ 231 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 36 - 41 */ 232 /* 42: PM, 44: PC RA, 46: SC vec'd */ 233 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 42 - 47 */ 234 /* 48: SIMD, 50: QP BFP, 52: String */ 235 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 - 53 */ 236 /* 54: DecFP, 56: DecI, 58: SHA */ 237 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 54 - 59 */ 238 /* 60: NM atomic, 62: RNG */ 239 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 60 - 65 */ 240 }; 241 uint8_t *pa_features = NULL; 242 size_t pa_size; 243 244 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_06, 0, cpu->compat_pvr)) { 245 pa_features = pa_features_206; 246 pa_size = sizeof(pa_features_206); 247 } 248 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_07, 0, cpu->compat_pvr)) { 249 pa_features = pa_features_207; 250 pa_size = sizeof(pa_features_207); 251 } 252 if (ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0, cpu->compat_pvr)) { 253 pa_features = pa_features_300; 254 pa_size = sizeof(pa_features_300); 255 } 256 if (!pa_features) { 257 return; 258 } 259 260 if (ppc_hash64_has(cpu, PPC_HASH64_CI_LARGEPAGE)) { 261 /* 262 * Note: we keep CI large pages off by default because a 64K capable 263 * guest provisioned with large pages might otherwise try to map a qemu 264 * framebuffer (or other kind of memory mapped PCI BAR) using 64K pages 265 * even if that qemu runs on a 4k host. 266 * We dd this bit back here if we are confident this is not an issue 267 */ 268 pa_features[3] |= 0x20; 269 } 270 if ((spapr_get_cap(spapr, SPAPR_CAP_HTM) != 0) && pa_size > 24) { 271 pa_features[24] |= 0x80; /* Transactional memory support */ 272 } 273 if (spapr->cas_pre_isa3_guest && pa_size > 40) { 274 /* Workaround for broken kernels that attempt (guest) radix 275 * mode when they can't handle it, if they see the radix bit set 276 * in pa-features. So hide it from them. */ 277 pa_features[40 + 2] &= ~0x80; /* Radix MMU */ 278 } 279 280 _FDT((fdt_setprop(fdt, offset, "ibm,pa-features", pa_features, pa_size))); 281 } 282 283 static hwaddr spapr_node0_size(MachineState *machine) 284 { 285 if (machine->numa_state->num_nodes) { 286 int i; 287 for (i = 0; i < machine->numa_state->num_nodes; ++i) { 288 if (machine->numa_state->nodes[i].node_mem) { 289 return MIN(pow2floor(machine->numa_state->nodes[i].node_mem), 290 machine->ram_size); 291 } 292 } 293 } 294 return machine->ram_size; 295 } 296 297 static void add_str(GString *s, const gchar *s1) 298 { 299 g_string_append_len(s, s1, strlen(s1) + 1); 300 } 301 302 static int spapr_dt_memory_node(SpaprMachineState *spapr, void *fdt, int nodeid, 303 hwaddr start, hwaddr size) 304 { 305 char mem_name[32]; 306 uint64_t mem_reg_property[2]; 307 int off; 308 309 mem_reg_property[0] = cpu_to_be64(start); 310 mem_reg_property[1] = cpu_to_be64(size); 311 312 sprintf(mem_name, "memory@%" HWADDR_PRIx, start); 313 off = fdt_add_subnode(fdt, 0, mem_name); 314 _FDT(off); 315 _FDT((fdt_setprop_string(fdt, off, "device_type", "memory"))); 316 _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property, 317 sizeof(mem_reg_property)))); 318 spapr_numa_write_associativity_dt(spapr, fdt, off, nodeid); 319 return off; 320 } 321 322 static uint32_t spapr_pc_dimm_node(MemoryDeviceInfoList *list, ram_addr_t addr) 323 { 324 MemoryDeviceInfoList *info; 325 326 for (info = list; info; info = info->next) { 327 MemoryDeviceInfo *value = info->value; 328 329 if (value && value->type == MEMORY_DEVICE_INFO_KIND_DIMM) { 330 PCDIMMDeviceInfo *pcdimm_info = value->u.dimm.data; 331 332 if (addr >= pcdimm_info->addr && 333 addr < (pcdimm_info->addr + pcdimm_info->size)) { 334 return pcdimm_info->node; 335 } 336 } 337 } 338 339 return -1; 340 } 341 342 struct sPAPRDrconfCellV2 { 343 uint32_t seq_lmbs; 344 uint64_t base_addr; 345 uint32_t drc_index; 346 uint32_t aa_index; 347 uint32_t flags; 348 } QEMU_PACKED; 349 350 typedef struct DrconfCellQueue { 351 struct sPAPRDrconfCellV2 cell; 352 QSIMPLEQ_ENTRY(DrconfCellQueue) entry; 353 } DrconfCellQueue; 354 355 static DrconfCellQueue * 356 spapr_get_drconf_cell(uint32_t seq_lmbs, uint64_t base_addr, 357 uint32_t drc_index, uint32_t aa_index, 358 uint32_t flags) 359 { 360 DrconfCellQueue *elem; 361 362 elem = g_malloc0(sizeof(*elem)); 363 elem->cell.seq_lmbs = cpu_to_be32(seq_lmbs); 364 elem->cell.base_addr = cpu_to_be64(base_addr); 365 elem->cell.drc_index = cpu_to_be32(drc_index); 366 elem->cell.aa_index = cpu_to_be32(aa_index); 367 elem->cell.flags = cpu_to_be32(flags); 368 369 return elem; 370 } 371 372 static int spapr_dt_dynamic_memory_v2(SpaprMachineState *spapr, void *fdt, 373 int offset, MemoryDeviceInfoList *dimms) 374 { 375 MachineState *machine = MACHINE(spapr); 376 uint8_t *int_buf, *cur_index; 377 int ret; 378 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 379 uint64_t addr, cur_addr, size; 380 uint32_t nr_boot_lmbs = (machine->device_memory->base / lmb_size); 381 uint64_t mem_end = machine->device_memory->base + 382 memory_region_size(&machine->device_memory->mr); 383 uint32_t node, buf_len, nr_entries = 0; 384 SpaprDrc *drc; 385 DrconfCellQueue *elem, *next; 386 MemoryDeviceInfoList *info; 387 QSIMPLEQ_HEAD(, DrconfCellQueue) drconf_queue 388 = QSIMPLEQ_HEAD_INITIALIZER(drconf_queue); 389 390 /* Entry to cover RAM and the gap area */ 391 elem = spapr_get_drconf_cell(nr_boot_lmbs, 0, 0, -1, 392 SPAPR_LMB_FLAGS_RESERVED | 393 SPAPR_LMB_FLAGS_DRC_INVALID); 394 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 395 nr_entries++; 396 397 cur_addr = machine->device_memory->base; 398 for (info = dimms; info; info = info->next) { 399 PCDIMMDeviceInfo *di = info->value->u.dimm.data; 400 401 addr = di->addr; 402 size = di->size; 403 node = di->node; 404 405 /* 406 * The NVDIMM area is hotpluggable after the NVDIMM is unplugged. The 407 * area is marked hotpluggable in the next iteration for the bigger 408 * chunk including the NVDIMM occupied area. 409 */ 410 if (info->value->type == MEMORY_DEVICE_INFO_KIND_NVDIMM) 411 continue; 412 413 /* Entry for hot-pluggable area */ 414 if (cur_addr < addr) { 415 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 416 g_assert(drc); 417 elem = spapr_get_drconf_cell((addr - cur_addr) / lmb_size, 418 cur_addr, spapr_drc_index(drc), -1, 0); 419 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 420 nr_entries++; 421 } 422 423 /* Entry for DIMM */ 424 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, addr / lmb_size); 425 g_assert(drc); 426 elem = spapr_get_drconf_cell(size / lmb_size, addr, 427 spapr_drc_index(drc), node, 428 (SPAPR_LMB_FLAGS_ASSIGNED | 429 SPAPR_LMB_FLAGS_HOTREMOVABLE)); 430 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 431 nr_entries++; 432 cur_addr = addr + size; 433 } 434 435 /* Entry for remaining hotpluggable area */ 436 if (cur_addr < mem_end) { 437 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, cur_addr / lmb_size); 438 g_assert(drc); 439 elem = spapr_get_drconf_cell((mem_end - cur_addr) / lmb_size, 440 cur_addr, spapr_drc_index(drc), -1, 0); 441 QSIMPLEQ_INSERT_TAIL(&drconf_queue, elem, entry); 442 nr_entries++; 443 } 444 445 buf_len = nr_entries * sizeof(struct sPAPRDrconfCellV2) + sizeof(uint32_t); 446 int_buf = cur_index = g_malloc0(buf_len); 447 *(uint32_t *)int_buf = cpu_to_be32(nr_entries); 448 cur_index += sizeof(nr_entries); 449 450 QSIMPLEQ_FOREACH_SAFE(elem, &drconf_queue, entry, next) { 451 memcpy(cur_index, &elem->cell, sizeof(elem->cell)); 452 cur_index += sizeof(elem->cell); 453 QSIMPLEQ_REMOVE(&drconf_queue, elem, DrconfCellQueue, entry); 454 g_free(elem); 455 } 456 457 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory-v2", int_buf, buf_len); 458 g_free(int_buf); 459 if (ret < 0) { 460 return -1; 461 } 462 return 0; 463 } 464 465 static int spapr_dt_dynamic_memory(SpaprMachineState *spapr, void *fdt, 466 int offset, MemoryDeviceInfoList *dimms) 467 { 468 MachineState *machine = MACHINE(spapr); 469 int i, ret; 470 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 471 uint32_t device_lmb_start = machine->device_memory->base / lmb_size; 472 uint32_t nr_lmbs = (machine->device_memory->base + 473 memory_region_size(&machine->device_memory->mr)) / 474 lmb_size; 475 uint32_t *int_buf, *cur_index, buf_len; 476 477 /* 478 * Allocate enough buffer size to fit in ibm,dynamic-memory 479 */ 480 buf_len = (nr_lmbs * SPAPR_DR_LMB_LIST_ENTRY_SIZE + 1) * sizeof(uint32_t); 481 cur_index = int_buf = g_malloc0(buf_len); 482 int_buf[0] = cpu_to_be32(nr_lmbs); 483 cur_index++; 484 for (i = 0; i < nr_lmbs; i++) { 485 uint64_t addr = i * lmb_size; 486 uint32_t *dynamic_memory = cur_index; 487 488 if (i >= device_lmb_start) { 489 SpaprDrc *drc; 490 491 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, i); 492 g_assert(drc); 493 494 dynamic_memory[0] = cpu_to_be32(addr >> 32); 495 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 496 dynamic_memory[2] = cpu_to_be32(spapr_drc_index(drc)); 497 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 498 dynamic_memory[4] = cpu_to_be32(spapr_pc_dimm_node(dimms, addr)); 499 if (memory_region_present(get_system_memory(), addr)) { 500 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_ASSIGNED); 501 } else { 502 dynamic_memory[5] = cpu_to_be32(0); 503 } 504 } else { 505 /* 506 * LMB information for RMA, boot time RAM and gap b/n RAM and 507 * device memory region -- all these are marked as reserved 508 * and as having no valid DRC. 509 */ 510 dynamic_memory[0] = cpu_to_be32(addr >> 32); 511 dynamic_memory[1] = cpu_to_be32(addr & 0xffffffff); 512 dynamic_memory[2] = cpu_to_be32(0); 513 dynamic_memory[3] = cpu_to_be32(0); /* reserved */ 514 dynamic_memory[4] = cpu_to_be32(-1); 515 dynamic_memory[5] = cpu_to_be32(SPAPR_LMB_FLAGS_RESERVED | 516 SPAPR_LMB_FLAGS_DRC_INVALID); 517 } 518 519 cur_index += SPAPR_DR_LMB_LIST_ENTRY_SIZE; 520 } 521 ret = fdt_setprop(fdt, offset, "ibm,dynamic-memory", int_buf, buf_len); 522 g_free(int_buf); 523 if (ret < 0) { 524 return -1; 525 } 526 return 0; 527 } 528 529 /* 530 * Adds ibm,dynamic-reconfiguration-memory node. 531 * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation 532 * of this device tree node. 533 */ 534 static int spapr_dt_dynamic_reconfiguration_memory(SpaprMachineState *spapr, 535 void *fdt) 536 { 537 MachineState *machine = MACHINE(spapr); 538 int ret, offset; 539 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 540 uint32_t prop_lmb_size[] = {cpu_to_be32(lmb_size >> 32), 541 cpu_to_be32(lmb_size & 0xffffffff)}; 542 MemoryDeviceInfoList *dimms = NULL; 543 544 /* 545 * Don't create the node if there is no device memory 546 */ 547 if (machine->ram_size == machine->maxram_size) { 548 return 0; 549 } 550 551 offset = fdt_add_subnode(fdt, 0, "ibm,dynamic-reconfiguration-memory"); 552 553 ret = fdt_setprop(fdt, offset, "ibm,lmb-size", prop_lmb_size, 554 sizeof(prop_lmb_size)); 555 if (ret < 0) { 556 return ret; 557 } 558 559 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-flags-mask", 0xff); 560 if (ret < 0) { 561 return ret; 562 } 563 564 ret = fdt_setprop_cell(fdt, offset, "ibm,memory-preservation-time", 0x0); 565 if (ret < 0) { 566 return ret; 567 } 568 569 /* ibm,dynamic-memory or ibm,dynamic-memory-v2 */ 570 dimms = qmp_memory_device_list(); 571 if (spapr_ovec_test(spapr->ov5_cas, OV5_DRMEM_V2)) { 572 ret = spapr_dt_dynamic_memory_v2(spapr, fdt, offset, dimms); 573 } else { 574 ret = spapr_dt_dynamic_memory(spapr, fdt, offset, dimms); 575 } 576 qapi_free_MemoryDeviceInfoList(dimms); 577 578 if (ret < 0) { 579 return ret; 580 } 581 582 ret = spapr_numa_write_assoc_lookup_arrays(spapr, fdt, offset); 583 584 return ret; 585 } 586 587 static int spapr_dt_memory(SpaprMachineState *spapr, void *fdt) 588 { 589 MachineState *machine = MACHINE(spapr); 590 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 591 hwaddr mem_start, node_size; 592 int i, nb_nodes = machine->numa_state->num_nodes; 593 NodeInfo *nodes = machine->numa_state->nodes; 594 595 for (i = 0, mem_start = 0; i < nb_nodes; ++i) { 596 if (!nodes[i].node_mem) { 597 continue; 598 } 599 if (mem_start >= machine->ram_size) { 600 node_size = 0; 601 } else { 602 node_size = nodes[i].node_mem; 603 if (node_size > machine->ram_size - mem_start) { 604 node_size = machine->ram_size - mem_start; 605 } 606 } 607 if (!mem_start) { 608 /* spapr_machine_init() checks for rma_size <= node0_size 609 * already */ 610 spapr_dt_memory_node(spapr, fdt, i, 0, spapr->rma_size); 611 mem_start += spapr->rma_size; 612 node_size -= spapr->rma_size; 613 } 614 for ( ; node_size; ) { 615 hwaddr sizetmp = pow2floor(node_size); 616 617 /* mem_start != 0 here */ 618 if (ctzl(mem_start) < ctzl(sizetmp)) { 619 sizetmp = 1ULL << ctzl(mem_start); 620 } 621 622 spapr_dt_memory_node(spapr, fdt, i, mem_start, sizetmp); 623 node_size -= sizetmp; 624 mem_start += sizetmp; 625 } 626 } 627 628 /* Generate ibm,dynamic-reconfiguration-memory node if required */ 629 if (spapr_ovec_test(spapr->ov5_cas, OV5_DRCONF_MEMORY)) { 630 int ret; 631 632 g_assert(smc->dr_lmb_enabled); 633 ret = spapr_dt_dynamic_reconfiguration_memory(spapr, fdt); 634 if (ret) { 635 return ret; 636 } 637 } 638 639 return 0; 640 } 641 642 static void spapr_dt_cpu(CPUState *cs, void *fdt, int offset, 643 SpaprMachineState *spapr) 644 { 645 MachineState *ms = MACHINE(spapr); 646 PowerPCCPU *cpu = POWERPC_CPU(cs); 647 CPUPPCState *env = &cpu->env; 648 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); 649 int index = spapr_get_vcpu_id(cpu); 650 uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 651 0xffffffff, 0xffffffff}; 652 uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() 653 : SPAPR_TIMEBASE_FREQ; 654 uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000; 655 uint32_t page_sizes_prop[64]; 656 size_t page_sizes_prop_size; 657 unsigned int smp_threads = ms->smp.threads; 658 uint32_t vcpus_per_socket = smp_threads * ms->smp.cores; 659 uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; 660 int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); 661 SpaprDrc *drc; 662 int drc_index; 663 uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ]; 664 int i; 665 666 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index); 667 if (drc) { 668 drc_index = spapr_drc_index(drc); 669 _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index))); 670 } 671 672 _FDT((fdt_setprop_cell(fdt, offset, "reg", index))); 673 _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu"))); 674 675 _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR]))); 676 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size", 677 env->dcache_line_size))); 678 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size", 679 env->dcache_line_size))); 680 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size", 681 env->icache_line_size))); 682 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size", 683 env->icache_line_size))); 684 685 if (pcc->l1_dcache_size) { 686 _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size", 687 pcc->l1_dcache_size))); 688 } else { 689 warn_report("Unknown L1 dcache size for cpu"); 690 } 691 if (pcc->l1_icache_size) { 692 _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size", 693 pcc->l1_icache_size))); 694 } else { 695 warn_report("Unknown L1 icache size for cpu"); 696 } 697 698 _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq))); 699 _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq))); 700 _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size))); 701 _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size))); 702 _FDT((fdt_setprop_string(fdt, offset, "status", "okay"))); 703 _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0))); 704 705 if (env->spr_cb[SPR_PURR].oea_read) { 706 _FDT((fdt_setprop_cell(fdt, offset, "ibm,purr", 1))); 707 } 708 if (env->spr_cb[SPR_SPURR].oea_read) { 709 _FDT((fdt_setprop_cell(fdt, offset, "ibm,spurr", 1))); 710 } 711 712 if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) { 713 _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes", 714 segs, sizeof(segs)))); 715 } 716 717 /* Advertise VSX (vector extensions) if available 718 * 1 == VMX / Altivec available 719 * 2 == VSX available 720 * 721 * Only CPUs for which we create core types in spapr_cpu_core.c 722 * are possible, and all of those have VMX */ 723 if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) { 724 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2))); 725 } else { 726 _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1))); 727 } 728 729 /* Advertise DFP (Decimal Floating Point) if available 730 * 0 / no property == no DFP 731 * 1 == DFP available */ 732 if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) { 733 _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); 734 } 735 736 page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop, 737 sizeof(page_sizes_prop)); 738 if (page_sizes_prop_size) { 739 _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes", 740 page_sizes_prop, page_sizes_prop_size))); 741 } 742 743 spapr_dt_pa_features(spapr, cpu, fdt, offset); 744 745 _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", 746 cs->cpu_index / vcpus_per_socket))); 747 748 _FDT((fdt_setprop(fdt, offset, "ibm,pft-size", 749 pft_size_prop, sizeof(pft_size_prop)))); 750 751 if (ms->numa_state->num_nodes > 1) { 752 _FDT(spapr_numa_fixup_cpu_dt(spapr, fdt, offset, cpu)); 753 } 754 755 _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt)); 756 757 if (pcc->radix_page_info) { 758 for (i = 0; i < pcc->radix_page_info->count; i++) { 759 radix_AP_encodings[i] = 760 cpu_to_be32(pcc->radix_page_info->entries[i]); 761 } 762 _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings", 763 radix_AP_encodings, 764 pcc->radix_page_info->count * 765 sizeof(radix_AP_encodings[0])))); 766 } 767 768 /* 769 * We set this property to let the guest know that it can use the large 770 * decrementer and its width in bits. 771 */ 772 if (spapr_get_cap(spapr, SPAPR_CAP_LARGE_DECREMENTER) != SPAPR_CAP_OFF) 773 _FDT((fdt_setprop_u32(fdt, offset, "ibm,dec-bits", 774 pcc->lrg_decr_bits))); 775 } 776 777 static void spapr_dt_cpus(void *fdt, SpaprMachineState *spapr) 778 { 779 CPUState **rev; 780 CPUState *cs; 781 int n_cpus; 782 int cpus_offset; 783 char *nodename; 784 int i; 785 786 cpus_offset = fdt_add_subnode(fdt, 0, "cpus"); 787 _FDT(cpus_offset); 788 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1))); 789 _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0))); 790 791 /* 792 * We walk the CPUs in reverse order to ensure that CPU DT nodes 793 * created by fdt_add_subnode() end up in the right order in FDT 794 * for the guest kernel the enumerate the CPUs correctly. 795 * 796 * The CPU list cannot be traversed in reverse order, so we need 797 * to do extra work. 798 */ 799 n_cpus = 0; 800 rev = NULL; 801 CPU_FOREACH(cs) { 802 rev = g_renew(CPUState *, rev, n_cpus + 1); 803 rev[n_cpus++] = cs; 804 } 805 806 for (i = n_cpus - 1; i >= 0; i--) { 807 CPUState *cs = rev[i]; 808 PowerPCCPU *cpu = POWERPC_CPU(cs); 809 int index = spapr_get_vcpu_id(cpu); 810 DeviceClass *dc = DEVICE_GET_CLASS(cs); 811 int offset; 812 813 if (!spapr_is_thread0_in_vcore(spapr, cpu)) { 814 continue; 815 } 816 817 nodename = g_strdup_printf("%s@%x", dc->fw_name, index); 818 offset = fdt_add_subnode(fdt, cpus_offset, nodename); 819 g_free(nodename); 820 _FDT(offset); 821 spapr_dt_cpu(cs, fdt, offset, spapr); 822 } 823 824 g_free(rev); 825 } 826 827 static int spapr_dt_rng(void *fdt) 828 { 829 int node; 830 int ret; 831 832 node = qemu_fdt_add_subnode(fdt, "/ibm,platform-facilities"); 833 if (node <= 0) { 834 return -1; 835 } 836 ret = fdt_setprop_string(fdt, node, "device_type", 837 "ibm,platform-facilities"); 838 ret |= fdt_setprop_cell(fdt, node, "#address-cells", 0x1); 839 ret |= fdt_setprop_cell(fdt, node, "#size-cells", 0x0); 840 841 node = fdt_add_subnode(fdt, node, "ibm,random-v1"); 842 if (node <= 0) { 843 return -1; 844 } 845 ret |= fdt_setprop_string(fdt, node, "compatible", "ibm,random"); 846 847 return ret ? -1 : 0; 848 } 849 850 static void spapr_dt_rtas(SpaprMachineState *spapr, void *fdt) 851 { 852 MachineState *ms = MACHINE(spapr); 853 int rtas; 854 GString *hypertas = g_string_sized_new(256); 855 GString *qemu_hypertas = g_string_sized_new(256); 856 uint64_t max_device_addr = MACHINE(spapr)->device_memory->base + 857 memory_region_size(&MACHINE(spapr)->device_memory->mr); 858 uint32_t lrdr_capacity[] = { 859 cpu_to_be32(max_device_addr >> 32), 860 cpu_to_be32(max_device_addr & 0xffffffff), 861 cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE >> 32), 862 cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE & 0xffffffff), 863 cpu_to_be32(ms->smp.max_cpus / ms->smp.threads), 864 }; 865 866 _FDT(rtas = fdt_add_subnode(fdt, 0, "rtas")); 867 868 /* hypertas */ 869 add_str(hypertas, "hcall-pft"); 870 add_str(hypertas, "hcall-term"); 871 add_str(hypertas, "hcall-dabr"); 872 add_str(hypertas, "hcall-interrupt"); 873 add_str(hypertas, "hcall-tce"); 874 add_str(hypertas, "hcall-vio"); 875 add_str(hypertas, "hcall-splpar"); 876 add_str(hypertas, "hcall-join"); 877 add_str(hypertas, "hcall-bulk"); 878 add_str(hypertas, "hcall-set-mode"); 879 add_str(hypertas, "hcall-sprg0"); 880 add_str(hypertas, "hcall-copy"); 881 add_str(hypertas, "hcall-debug"); 882 add_str(hypertas, "hcall-vphn"); 883 add_str(qemu_hypertas, "hcall-memop1"); 884 885 if (!kvm_enabled() || kvmppc_spapr_use_multitce()) { 886 add_str(hypertas, "hcall-multi-tce"); 887 } 888 889 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 890 add_str(hypertas, "hcall-hpt-resize"); 891 } 892 893 _FDT(fdt_setprop(fdt, rtas, "ibm,hypertas-functions", 894 hypertas->str, hypertas->len)); 895 g_string_free(hypertas, TRUE); 896 _FDT(fdt_setprop(fdt, rtas, "qemu,hypertas-functions", 897 qemu_hypertas->str, qemu_hypertas->len)); 898 g_string_free(qemu_hypertas, TRUE); 899 900 spapr_numa_write_rtas_dt(spapr, fdt, rtas); 901 902 /* 903 * FWNMI reserves RTAS_ERROR_LOG_MAX for the machine check error log, 904 * and 16 bytes per CPU for system reset error log plus an extra 8 bytes. 905 * 906 * The system reset requirements are driven by existing Linux and PowerVM 907 * implementation which (contrary to PAPR) saves r3 in the error log 908 * structure like machine check, so Linux expects to find the saved r3 909 * value at the address in r3 upon FWNMI-enabled sreset interrupt (and 910 * does not look at the error value). 911 * 912 * System reset interrupts are not subject to interlock like machine 913 * check, so this memory area could be corrupted if the sreset is 914 * interrupted by a machine check (or vice versa) if it was shared. To 915 * prevent this, system reset uses per-CPU areas for the sreset save 916 * area. A system reset that interrupts a system reset handler could 917 * still overwrite this area, but Linux doesn't try to recover in that 918 * case anyway. 919 * 920 * The extra 8 bytes is required because Linux's FWNMI error log check 921 * is off-by-one. 922 */ 923 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-size", RTAS_ERROR_LOG_MAX + 924 ms->smp.max_cpus * sizeof(uint64_t)*2 + sizeof(uint64_t))); 925 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max", 926 RTAS_ERROR_LOG_MAX)); 927 _FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate", 928 RTAS_EVENT_SCAN_RATE)); 929 930 g_assert(msi_nonbroken); 931 _FDT(fdt_setprop(fdt, rtas, "ibm,change-msix-capable", NULL, 0)); 932 933 /* 934 * According to PAPR, rtas ibm,os-term does not guarantee a return 935 * back to the guest cpu. 936 * 937 * While an additional ibm,extended-os-term property indicates 938 * that rtas call return will always occur. Set this property. 939 */ 940 _FDT(fdt_setprop(fdt, rtas, "ibm,extended-os-term", NULL, 0)); 941 942 _FDT(fdt_setprop(fdt, rtas, "ibm,lrdr-capacity", 943 lrdr_capacity, sizeof(lrdr_capacity))); 944 945 spapr_dt_rtas_tokens(fdt, rtas); 946 } 947 948 /* 949 * Prepare ibm,arch-vec-5-platform-support, which indicates the MMU 950 * and the XIVE features that the guest may request and thus the valid 951 * values for bytes 23..26 of option vector 5: 952 */ 953 static void spapr_dt_ov5_platform_support(SpaprMachineState *spapr, void *fdt, 954 int chosen) 955 { 956 PowerPCCPU *first_ppc_cpu = POWERPC_CPU(first_cpu); 957 958 char val[2 * 4] = { 959 23, 0x00, /* XICS / XIVE mode */ 960 24, 0x00, /* Hash/Radix, filled in below. */ 961 25, 0x00, /* Hash options: Segment Tables == no, GTSE == no. */ 962 26, 0x40, /* Radix options: GTSE == yes. */ 963 }; 964 965 if (spapr->irq->xics && spapr->irq->xive) { 966 val[1] = SPAPR_OV5_XIVE_BOTH; 967 } else if (spapr->irq->xive) { 968 val[1] = SPAPR_OV5_XIVE_EXPLOIT; 969 } else { 970 assert(spapr->irq->xics); 971 val[1] = SPAPR_OV5_XIVE_LEGACY; 972 } 973 974 if (!ppc_check_compat(first_ppc_cpu, CPU_POWERPC_LOGICAL_3_00, 0, 975 first_ppc_cpu->compat_pvr)) { 976 /* 977 * If we're in a pre POWER9 compat mode then the guest should 978 * do hash and use the legacy interrupt mode 979 */ 980 val[1] = SPAPR_OV5_XIVE_LEGACY; /* XICS */ 981 val[3] = 0x00; /* Hash */ 982 } else if (kvm_enabled()) { 983 if (kvmppc_has_cap_mmu_radix() && kvmppc_has_cap_mmu_hash_v3()) { 984 val[3] = 0x80; /* OV5_MMU_BOTH */ 985 } else if (kvmppc_has_cap_mmu_radix()) { 986 val[3] = 0x40; /* OV5_MMU_RADIX_300 */ 987 } else { 988 val[3] = 0x00; /* Hash */ 989 } 990 } else { 991 /* V3 MMU supports both hash and radix in tcg (with dynamic switching) */ 992 val[3] = 0xC0; 993 } 994 _FDT(fdt_setprop(fdt, chosen, "ibm,arch-vec-5-platform-support", 995 val, sizeof(val))); 996 } 997 998 static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt, bool reset) 999 { 1000 MachineState *machine = MACHINE(spapr); 1001 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1002 int chosen; 1003 1004 _FDT(chosen = fdt_add_subnode(fdt, 0, "chosen")); 1005 1006 if (reset) { 1007 const char *boot_device = machine->boot_order; 1008 char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus); 1009 size_t cb = 0; 1010 char *bootlist = get_boot_devices_list(&cb); 1011 1012 if (machine->kernel_cmdline && machine->kernel_cmdline[0]) { 1013 _FDT(fdt_setprop_string(fdt, chosen, "bootargs", 1014 machine->kernel_cmdline)); 1015 } 1016 1017 if (spapr->initrd_size) { 1018 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start", 1019 spapr->initrd_base)); 1020 _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end", 1021 spapr->initrd_base + spapr->initrd_size)); 1022 } 1023 1024 if (spapr->kernel_size) { 1025 uint64_t kprop[2] = { cpu_to_be64(spapr->kernel_addr), 1026 cpu_to_be64(spapr->kernel_size) }; 1027 1028 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel", 1029 &kprop, sizeof(kprop))); 1030 if (spapr->kernel_le) { 1031 _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0)); 1032 } 1033 } 1034 if (boot_menu) { 1035 _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu))); 1036 } 1037 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width)); 1038 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height)); 1039 _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth)); 1040 1041 if (cb && bootlist) { 1042 int i; 1043 1044 for (i = 0; i < cb; i++) { 1045 if (bootlist[i] == '\n') { 1046 bootlist[i] = ' '; 1047 } 1048 } 1049 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist)); 1050 } 1051 1052 if (boot_device && strlen(boot_device)) { 1053 _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device)); 1054 } 1055 1056 if (!spapr->has_graphics && stdout_path) { 1057 /* 1058 * "linux,stdout-path" and "stdout" properties are 1059 * deprecated by linux kernel. New platforms should only 1060 * use the "stdout-path" property. Set the new property 1061 * and continue using older property to remain compatible 1062 * with the existing firmware. 1063 */ 1064 _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path)); 1065 _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path)); 1066 } 1067 1068 /* 1069 * We can deal with BAR reallocation just fine, advertise it 1070 * to the guest 1071 */ 1072 if (smc->linux_pci_probe) { 1073 _FDT(fdt_setprop_cell(fdt, chosen, "linux,pci-probe-only", 0)); 1074 } 1075 1076 spapr_dt_ov5_platform_support(spapr, fdt, chosen); 1077 1078 g_free(stdout_path); 1079 g_free(bootlist); 1080 } 1081 1082 _FDT(spapr_dt_ovec(fdt, chosen, spapr->ov5_cas, "ibm,architecture-vec-5")); 1083 } 1084 1085 static void spapr_dt_hypervisor(SpaprMachineState *spapr, void *fdt) 1086 { 1087 /* The /hypervisor node isn't in PAPR - this is a hack to allow PR 1088 * KVM to work under pHyp with some guest co-operation */ 1089 int hypervisor; 1090 uint8_t hypercall[16]; 1091 1092 _FDT(hypervisor = fdt_add_subnode(fdt, 0, "hypervisor")); 1093 /* indicate KVM hypercall interface */ 1094 _FDT(fdt_setprop_string(fdt, hypervisor, "compatible", "linux,kvm")); 1095 if (kvmppc_has_cap_fixup_hcalls()) { 1096 /* 1097 * Older KVM versions with older guest kernels were broken 1098 * with the magic page, don't allow the guest to map it. 1099 */ 1100 if (!kvmppc_get_hypercall(first_cpu->env_ptr, hypercall, 1101 sizeof(hypercall))) { 1102 _FDT(fdt_setprop(fdt, hypervisor, "hcall-instructions", 1103 hypercall, sizeof(hypercall))); 1104 } 1105 } 1106 } 1107 1108 void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space) 1109 { 1110 MachineState *machine = MACHINE(spapr); 1111 MachineClass *mc = MACHINE_GET_CLASS(machine); 1112 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 1113 int ret; 1114 void *fdt; 1115 SpaprPhbState *phb; 1116 char *buf; 1117 1118 fdt = g_malloc0(space); 1119 _FDT((fdt_create_empty_tree(fdt, space))); 1120 1121 /* Root node */ 1122 _FDT(fdt_setprop_string(fdt, 0, "device_type", "chrp")); 1123 _FDT(fdt_setprop_string(fdt, 0, "model", "IBM pSeries (emulated by qemu)")); 1124 _FDT(fdt_setprop_string(fdt, 0, "compatible", "qemu,pseries")); 1125 1126 /* Guest UUID & Name*/ 1127 buf = qemu_uuid_unparse_strdup(&qemu_uuid); 1128 _FDT(fdt_setprop_string(fdt, 0, "vm,uuid", buf)); 1129 if (qemu_uuid_set) { 1130 _FDT(fdt_setprop_string(fdt, 0, "system-id", buf)); 1131 } 1132 g_free(buf); 1133 1134 if (qemu_get_vm_name()) { 1135 _FDT(fdt_setprop_string(fdt, 0, "ibm,partition-name", 1136 qemu_get_vm_name())); 1137 } 1138 1139 /* Host Model & Serial Number */ 1140 if (spapr->host_model) { 1141 _FDT(fdt_setprop_string(fdt, 0, "host-model", spapr->host_model)); 1142 } else if (smc->broken_host_serial_model && kvmppc_get_host_model(&buf)) { 1143 _FDT(fdt_setprop_string(fdt, 0, "host-model", buf)); 1144 g_free(buf); 1145 } 1146 1147 if (spapr->host_serial) { 1148 _FDT(fdt_setprop_string(fdt, 0, "host-serial", spapr->host_serial)); 1149 } else if (smc->broken_host_serial_model && kvmppc_get_host_serial(&buf)) { 1150 _FDT(fdt_setprop_string(fdt, 0, "host-serial", buf)); 1151 g_free(buf); 1152 } 1153 1154 _FDT(fdt_setprop_cell(fdt, 0, "#address-cells", 2)); 1155 _FDT(fdt_setprop_cell(fdt, 0, "#size-cells", 2)); 1156 1157 /* /interrupt controller */ 1158 spapr_irq_dt(spapr, spapr_max_server_number(spapr), fdt, PHANDLE_INTC); 1159 1160 ret = spapr_dt_memory(spapr, fdt); 1161 if (ret < 0) { 1162 error_report("couldn't setup memory nodes in fdt"); 1163 exit(1); 1164 } 1165 1166 /* /vdevice */ 1167 spapr_dt_vdevice(spapr->vio_bus, fdt); 1168 1169 if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) { 1170 ret = spapr_dt_rng(fdt); 1171 if (ret < 0) { 1172 error_report("could not set up rng device in the fdt"); 1173 exit(1); 1174 } 1175 } 1176 1177 QLIST_FOREACH(phb, &spapr->phbs, list) { 1178 ret = spapr_dt_phb(spapr, phb, PHANDLE_INTC, fdt, NULL); 1179 if (ret < 0) { 1180 error_report("couldn't setup PCI devices in fdt"); 1181 exit(1); 1182 } 1183 } 1184 1185 spapr_dt_cpus(fdt, spapr); 1186 1187 if (smc->dr_lmb_enabled) { 1188 _FDT(spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB)); 1189 } 1190 1191 if (mc->has_hotpluggable_cpus) { 1192 int offset = fdt_path_offset(fdt, "/cpus"); 1193 ret = spapr_dt_drc(fdt, offset, NULL, SPAPR_DR_CONNECTOR_TYPE_CPU); 1194 if (ret < 0) { 1195 error_report("Couldn't set up CPU DR device tree properties"); 1196 exit(1); 1197 } 1198 } 1199 1200 /* /event-sources */ 1201 spapr_dt_events(spapr, fdt); 1202 1203 /* /rtas */ 1204 spapr_dt_rtas(spapr, fdt); 1205 1206 /* /chosen */ 1207 spapr_dt_chosen(spapr, fdt, reset); 1208 1209 /* /hypervisor */ 1210 if (kvm_enabled()) { 1211 spapr_dt_hypervisor(spapr, fdt); 1212 } 1213 1214 /* Build memory reserve map */ 1215 if (reset) { 1216 if (spapr->kernel_size) { 1217 _FDT((fdt_add_mem_rsv(fdt, spapr->kernel_addr, 1218 spapr->kernel_size))); 1219 } 1220 if (spapr->initrd_size) { 1221 _FDT((fdt_add_mem_rsv(fdt, spapr->initrd_base, 1222 spapr->initrd_size))); 1223 } 1224 } 1225 1226 if (smc->dr_phb_enabled) { 1227 ret = spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_PHB); 1228 if (ret < 0) { 1229 error_report("Couldn't set up PHB DR device tree properties"); 1230 exit(1); 1231 } 1232 } 1233 1234 /* NVDIMM devices */ 1235 if (mc->nvdimm_supported) { 1236 spapr_dt_persistent_memory(spapr, fdt); 1237 } 1238 1239 return fdt; 1240 } 1241 1242 static uint64_t translate_kernel_address(void *opaque, uint64_t addr) 1243 { 1244 SpaprMachineState *spapr = opaque; 1245 1246 return (addr & 0x0fffffff) + spapr->kernel_addr; 1247 } 1248 1249 static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp, 1250 PowerPCCPU *cpu) 1251 { 1252 CPUPPCState *env = &cpu->env; 1253 1254 /* The TCG path should also be holding the BQL at this point */ 1255 g_assert(qemu_mutex_iothread_locked()); 1256 1257 if (msr_pr) { 1258 hcall_dprintf("Hypercall made with MSR[PR]=1\n"); 1259 env->gpr[3] = H_PRIVILEGE; 1260 } else { 1261 env->gpr[3] = spapr_hypercall(cpu, env->gpr[3], &env->gpr[4]); 1262 } 1263 } 1264 1265 struct LPCRSyncState { 1266 target_ulong value; 1267 target_ulong mask; 1268 }; 1269 1270 static void do_lpcr_sync(CPUState *cs, run_on_cpu_data arg) 1271 { 1272 struct LPCRSyncState *s = arg.host_ptr; 1273 PowerPCCPU *cpu = POWERPC_CPU(cs); 1274 CPUPPCState *env = &cpu->env; 1275 target_ulong lpcr; 1276 1277 cpu_synchronize_state(cs); 1278 lpcr = env->spr[SPR_LPCR]; 1279 lpcr &= ~s->mask; 1280 lpcr |= s->value; 1281 ppc_store_lpcr(cpu, lpcr); 1282 } 1283 1284 void spapr_set_all_lpcrs(target_ulong value, target_ulong mask) 1285 { 1286 CPUState *cs; 1287 struct LPCRSyncState s = { 1288 .value = value, 1289 .mask = mask 1290 }; 1291 CPU_FOREACH(cs) { 1292 run_on_cpu(cs, do_lpcr_sync, RUN_ON_CPU_HOST_PTR(&s)); 1293 } 1294 } 1295 1296 static void spapr_get_pate(PPCVirtualHypervisor *vhyp, ppc_v3_pate_t *entry) 1297 { 1298 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1299 1300 /* Copy PATE1:GR into PATE0:HR */ 1301 entry->dw0 = spapr->patb_entry & PATE0_HR; 1302 entry->dw1 = spapr->patb_entry; 1303 } 1304 1305 #define HPTE(_table, _i) (void *)(((uint64_t *)(_table)) + ((_i) * 2)) 1306 #define HPTE_VALID(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_VALID) 1307 #define HPTE_DIRTY(_hpte) (tswap64(*((uint64_t *)(_hpte))) & HPTE64_V_HPTE_DIRTY) 1308 #define CLEAN_HPTE(_hpte) ((*(uint64_t *)(_hpte)) &= tswap64(~HPTE64_V_HPTE_DIRTY)) 1309 #define DIRTY_HPTE(_hpte) ((*(uint64_t *)(_hpte)) |= tswap64(HPTE64_V_HPTE_DIRTY)) 1310 1311 /* 1312 * Get the fd to access the kernel htab, re-opening it if necessary 1313 */ 1314 static int get_htab_fd(SpaprMachineState *spapr) 1315 { 1316 Error *local_err = NULL; 1317 1318 if (spapr->htab_fd >= 0) { 1319 return spapr->htab_fd; 1320 } 1321 1322 spapr->htab_fd = kvmppc_get_htab_fd(false, 0, &local_err); 1323 if (spapr->htab_fd < 0) { 1324 error_report_err(local_err); 1325 } 1326 1327 return spapr->htab_fd; 1328 } 1329 1330 void close_htab_fd(SpaprMachineState *spapr) 1331 { 1332 if (spapr->htab_fd >= 0) { 1333 close(spapr->htab_fd); 1334 } 1335 spapr->htab_fd = -1; 1336 } 1337 1338 static hwaddr spapr_hpt_mask(PPCVirtualHypervisor *vhyp) 1339 { 1340 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1341 1342 return HTAB_SIZE(spapr) / HASH_PTEG_SIZE_64 - 1; 1343 } 1344 1345 static target_ulong spapr_encode_hpt_for_kvm_pr(PPCVirtualHypervisor *vhyp) 1346 { 1347 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1348 1349 assert(kvm_enabled()); 1350 1351 if (!spapr->htab) { 1352 return 0; 1353 } 1354 1355 return (target_ulong)(uintptr_t)spapr->htab | (spapr->htab_shift - 18); 1356 } 1357 1358 static const ppc_hash_pte64_t *spapr_map_hptes(PPCVirtualHypervisor *vhyp, 1359 hwaddr ptex, int n) 1360 { 1361 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1362 hwaddr pte_offset = ptex * HASH_PTE_SIZE_64; 1363 1364 if (!spapr->htab) { 1365 /* 1366 * HTAB is controlled by KVM. Fetch into temporary buffer 1367 */ 1368 ppc_hash_pte64_t *hptes = g_malloc(n * HASH_PTE_SIZE_64); 1369 kvmppc_read_hptes(hptes, ptex, n); 1370 return hptes; 1371 } 1372 1373 /* 1374 * HTAB is controlled by QEMU. Just point to the internally 1375 * accessible PTEG. 1376 */ 1377 return (const ppc_hash_pte64_t *)(spapr->htab + pte_offset); 1378 } 1379 1380 static void spapr_unmap_hptes(PPCVirtualHypervisor *vhyp, 1381 const ppc_hash_pte64_t *hptes, 1382 hwaddr ptex, int n) 1383 { 1384 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1385 1386 if (!spapr->htab) { 1387 g_free((void *)hptes); 1388 } 1389 1390 /* Nothing to do for qemu managed HPT */ 1391 } 1392 1393 void spapr_store_hpte(PowerPCCPU *cpu, hwaddr ptex, 1394 uint64_t pte0, uint64_t pte1) 1395 { 1396 SpaprMachineState *spapr = SPAPR_MACHINE(cpu->vhyp); 1397 hwaddr offset = ptex * HASH_PTE_SIZE_64; 1398 1399 if (!spapr->htab) { 1400 kvmppc_write_hpte(ptex, pte0, pte1); 1401 } else { 1402 if (pte0 & HPTE64_V_VALID) { 1403 stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); 1404 /* 1405 * When setting valid, we write PTE1 first. This ensures 1406 * proper synchronization with the reading code in 1407 * ppc_hash64_pteg_search() 1408 */ 1409 smp_wmb(); 1410 stq_p(spapr->htab + offset, pte0); 1411 } else { 1412 stq_p(spapr->htab + offset, pte0); 1413 /* 1414 * When clearing it we set PTE0 first. This ensures proper 1415 * synchronization with the reading code in 1416 * ppc_hash64_pteg_search() 1417 */ 1418 smp_wmb(); 1419 stq_p(spapr->htab + offset + HASH_PTE_SIZE_64 / 2, pte1); 1420 } 1421 } 1422 } 1423 1424 static void spapr_hpte_set_c(PPCVirtualHypervisor *vhyp, hwaddr ptex, 1425 uint64_t pte1) 1426 { 1427 hwaddr offset = ptex * HASH_PTE_SIZE_64 + 15; 1428 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1429 1430 if (!spapr->htab) { 1431 /* There should always be a hash table when this is called */ 1432 error_report("spapr_hpte_set_c called with no hash table !"); 1433 return; 1434 } 1435 1436 /* The HW performs a non-atomic byte update */ 1437 stb_p(spapr->htab + offset, (pte1 & 0xff) | 0x80); 1438 } 1439 1440 static void spapr_hpte_set_r(PPCVirtualHypervisor *vhyp, hwaddr ptex, 1441 uint64_t pte1) 1442 { 1443 hwaddr offset = ptex * HASH_PTE_SIZE_64 + 14; 1444 SpaprMachineState *spapr = SPAPR_MACHINE(vhyp); 1445 1446 if (!spapr->htab) { 1447 /* There should always be a hash table when this is called */ 1448 error_report("spapr_hpte_set_r called with no hash table !"); 1449 return; 1450 } 1451 1452 /* The HW performs a non-atomic byte update */ 1453 stb_p(spapr->htab + offset, ((pte1 >> 8) & 0xff) | 0x01); 1454 } 1455 1456 int spapr_hpt_shift_for_ramsize(uint64_t ramsize) 1457 { 1458 int shift; 1459 1460 /* We aim for a hash table of size 1/128 the size of RAM (rounded 1461 * up). The PAPR recommendation is actually 1/64 of RAM size, but 1462 * that's much more than is needed for Linux guests */ 1463 shift = ctz64(pow2ceil(ramsize)) - 7; 1464 shift = MAX(shift, 18); /* Minimum architected size */ 1465 shift = MIN(shift, 46); /* Maximum architected size */ 1466 return shift; 1467 } 1468 1469 void spapr_free_hpt(SpaprMachineState *spapr) 1470 { 1471 g_free(spapr->htab); 1472 spapr->htab = NULL; 1473 spapr->htab_shift = 0; 1474 close_htab_fd(spapr); 1475 } 1476 1477 void spapr_reallocate_hpt(SpaprMachineState *spapr, int shift, 1478 Error **errp) 1479 { 1480 long rc; 1481 1482 /* Clean up any HPT info from a previous boot */ 1483 spapr_free_hpt(spapr); 1484 1485 rc = kvmppc_reset_htab(shift); 1486 1487 if (rc == -EOPNOTSUPP) { 1488 error_setg(errp, "HPT not supported in nested guests"); 1489 return; 1490 } 1491 1492 if (rc < 0) { 1493 /* kernel-side HPT needed, but couldn't allocate one */ 1494 error_setg_errno(errp, errno, 1495 "Failed to allocate KVM HPT of order %d (try smaller maxmem?)", 1496 shift); 1497 /* This is almost certainly fatal, but if the caller really 1498 * wants to carry on with shift == 0, it's welcome to try */ 1499 } else if (rc > 0) { 1500 /* kernel-side HPT allocated */ 1501 if (rc != shift) { 1502 error_setg(errp, 1503 "Requested order %d HPT, but kernel allocated order %ld (try smaller maxmem?)", 1504 shift, rc); 1505 } 1506 1507 spapr->htab_shift = shift; 1508 spapr->htab = NULL; 1509 } else { 1510 /* kernel-side HPT not needed, allocate in userspace instead */ 1511 size_t size = 1ULL << shift; 1512 int i; 1513 1514 spapr->htab = qemu_memalign(size, size); 1515 if (!spapr->htab) { 1516 error_setg_errno(errp, errno, 1517 "Could not allocate HPT of order %d", shift); 1518 return; 1519 } 1520 1521 memset(spapr->htab, 0, size); 1522 spapr->htab_shift = shift; 1523 1524 for (i = 0; i < size / HASH_PTE_SIZE_64; i++) { 1525 DIRTY_HPTE(HPTE(spapr->htab, i)); 1526 } 1527 } 1528 /* We're setting up a hash table, so that means we're not radix */ 1529 spapr->patb_entry = 0; 1530 spapr_set_all_lpcrs(0, LPCR_HR | LPCR_UPRT); 1531 } 1532 1533 void spapr_setup_hpt(SpaprMachineState *spapr) 1534 { 1535 int hpt_shift; 1536 1537 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DISABLED) { 1538 hpt_shift = spapr_hpt_shift_for_ramsize(MACHINE(spapr)->maxram_size); 1539 } else { 1540 uint64_t current_ram_size; 1541 1542 current_ram_size = MACHINE(spapr)->ram_size + get_plugged_memory_size(); 1543 hpt_shift = spapr_hpt_shift_for_ramsize(current_ram_size); 1544 } 1545 spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal); 1546 1547 if (kvm_enabled()) { 1548 hwaddr vrma_limit = kvmppc_vrma_limit(spapr->htab_shift); 1549 1550 /* Check our RMA fits in the possible VRMA */ 1551 if (vrma_limit < spapr->rma_size) { 1552 error_report("Unable to create %" HWADDR_PRIu 1553 "MiB RMA (VRMA only allows %" HWADDR_PRIu "MiB", 1554 spapr->rma_size / MiB, vrma_limit / MiB); 1555 exit(EXIT_FAILURE); 1556 } 1557 } 1558 } 1559 1560 static int spapr_reset_drcs(Object *child, void *opaque) 1561 { 1562 SpaprDrc *drc = 1563 (SpaprDrc *) object_dynamic_cast(child, 1564 TYPE_SPAPR_DR_CONNECTOR); 1565 1566 if (drc) { 1567 spapr_drc_reset(drc); 1568 } 1569 1570 return 0; 1571 } 1572 1573 static void spapr_machine_reset(MachineState *machine) 1574 { 1575 SpaprMachineState *spapr = SPAPR_MACHINE(machine); 1576 PowerPCCPU *first_ppc_cpu; 1577 hwaddr fdt_addr; 1578 void *fdt; 1579 int rc; 1580 1581 kvmppc_svm_off(&error_fatal); 1582 spapr_caps_apply(spapr); 1583 1584 first_ppc_cpu = POWERPC_CPU(first_cpu); 1585 if (kvm_enabled() && kvmppc_has_cap_mmu_radix() && 1586 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 1587 spapr->max_compat_pvr)) { 1588 /* 1589 * If using KVM with radix mode available, VCPUs can be started 1590 * without a HPT because KVM will start them in radix mode. 1591 * Set the GR bit in PATE so that we know there is no HPT. 1592 */ 1593 spapr->patb_entry = PATE1_GR; 1594 spapr_set_all_lpcrs(LPCR_HR | LPCR_UPRT, LPCR_HR | LPCR_UPRT); 1595 } else { 1596 spapr_setup_hpt(spapr); 1597 } 1598 1599 qemu_devices_reset(); 1600 1601 spapr_ovec_cleanup(spapr->ov5_cas); 1602 spapr->ov5_cas = spapr_ovec_new(); 1603 1604 ppc_set_compat_all(spapr->max_compat_pvr, &error_fatal); 1605 1606 /* 1607 * This is fixing some of the default configuration of the XIVE 1608 * devices. To be called after the reset of the machine devices. 1609 */ 1610 spapr_irq_reset(spapr, &error_fatal); 1611 1612 /* 1613 * There is no CAS under qtest. Simulate one to please the code that 1614 * depends on spapr->ov5_cas. This is especially needed to test device 1615 * unplug, so we do that before resetting the DRCs. 1616 */ 1617 if (qtest_enabled()) { 1618 spapr_ovec_cleanup(spapr->ov5_cas); 1619 spapr->ov5_cas = spapr_ovec_clone(spapr->ov5); 1620 } 1621 1622 /* DRC reset may cause a device to be unplugged. This will cause troubles 1623 * if this device is used by another device (eg, a running vhost backend 1624 * will crash QEMU if the DIMM holding the vring goes away). To avoid such 1625 * situations, we reset DRCs after all devices have been reset. 1626 */ 1627 object_child_foreach_recursive(object_get_root(), spapr_reset_drcs, NULL); 1628 1629 spapr_clear_pending_events(spapr); 1630 1631 /* 1632 * We place the device tree and RTAS just below either the top of the RMA, 1633 * or just below 2GB, whichever is lower, so that it can be 1634 * processed with 32-bit real mode code if necessary 1635 */ 1636 fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE; 1637 1638 fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE); 1639 1640 rc = fdt_pack(fdt); 1641 1642 /* Should only fail if we've built a corrupted tree */ 1643 assert(rc == 0); 1644 1645 /* Load the fdt */ 1646 qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); 1647 cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt)); 1648 g_free(spapr->fdt_blob); 1649 spapr->fdt_size = fdt_totalsize(fdt); 1650 spapr->fdt_initial_size = spapr->fdt_size; 1651 spapr->fdt_blob = fdt; 1652 1653 /* Set up the entry state */ 1654 spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, 0, fdt_addr, 0); 1655 first_ppc_cpu->env.gpr[5] = 0; 1656 1657 spapr->fwnmi_system_reset_addr = -1; 1658 spapr->fwnmi_machine_check_addr = -1; 1659 spapr->fwnmi_machine_check_interlock = -1; 1660 1661 /* Signal all vCPUs waiting on this condition */ 1662 qemu_cond_broadcast(&spapr->fwnmi_machine_check_interlock_cond); 1663 1664 migrate_del_blocker(spapr->fwnmi_migration_blocker); 1665 } 1666 1667 static void spapr_create_nvram(SpaprMachineState *spapr) 1668 { 1669 DeviceState *dev = qdev_new("spapr-nvram"); 1670 DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0); 1671 1672 if (dinfo) { 1673 qdev_prop_set_drive_err(dev, "drive", blk_by_legacy_dinfo(dinfo), 1674 &error_fatal); 1675 } 1676 1677 qdev_realize_and_unref(dev, &spapr->vio_bus->bus, &error_fatal); 1678 1679 spapr->nvram = (struct SpaprNvram *)dev; 1680 } 1681 1682 static void spapr_rtc_create(SpaprMachineState *spapr) 1683 { 1684 object_initialize_child_with_props(OBJECT(spapr), "rtc", &spapr->rtc, 1685 sizeof(spapr->rtc), TYPE_SPAPR_RTC, 1686 &error_fatal, NULL); 1687 qdev_realize(DEVICE(&spapr->rtc), NULL, &error_fatal); 1688 object_property_add_alias(OBJECT(spapr), "rtc-time", OBJECT(&spapr->rtc), 1689 "date"); 1690 } 1691 1692 /* Returns whether we want to use VGA or not */ 1693 static bool spapr_vga_init(PCIBus *pci_bus, Error **errp) 1694 { 1695 switch (vga_interface_type) { 1696 case VGA_NONE: 1697 return false; 1698 case VGA_DEVICE: 1699 return true; 1700 case VGA_STD: 1701 case VGA_VIRTIO: 1702 case VGA_CIRRUS: 1703 return pci_vga_init(pci_bus) != NULL; 1704 default: 1705 error_setg(errp, 1706 "Unsupported VGA mode, only -vga std or -vga virtio is supported"); 1707 return false; 1708 } 1709 } 1710 1711 static int spapr_pre_load(void *opaque) 1712 { 1713 int rc; 1714 1715 rc = spapr_caps_pre_load(opaque); 1716 if (rc) { 1717 return rc; 1718 } 1719 1720 return 0; 1721 } 1722 1723 static int spapr_post_load(void *opaque, int version_id) 1724 { 1725 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1726 int err = 0; 1727 1728 err = spapr_caps_post_migration(spapr); 1729 if (err) { 1730 return err; 1731 } 1732 1733 /* 1734 * In earlier versions, there was no separate qdev for the PAPR 1735 * RTC, so the RTC offset was stored directly in sPAPREnvironment. 1736 * So when migrating from those versions, poke the incoming offset 1737 * value into the RTC device 1738 */ 1739 if (version_id < 3) { 1740 err = spapr_rtc_import_offset(&spapr->rtc, spapr->rtc_offset); 1741 if (err) { 1742 return err; 1743 } 1744 } 1745 1746 if (kvm_enabled() && spapr->patb_entry) { 1747 PowerPCCPU *cpu = POWERPC_CPU(first_cpu); 1748 bool radix = !!(spapr->patb_entry & PATE1_GR); 1749 bool gtse = !!(cpu->env.spr[SPR_LPCR] & LPCR_GTSE); 1750 1751 /* 1752 * Update LPCR:HR and UPRT as they may not be set properly in 1753 * the stream 1754 */ 1755 spapr_set_all_lpcrs(radix ? (LPCR_HR | LPCR_UPRT) : 0, 1756 LPCR_HR | LPCR_UPRT); 1757 1758 err = kvmppc_configure_v3_mmu(cpu, radix, gtse, spapr->patb_entry); 1759 if (err) { 1760 error_report("Process table config unsupported by the host"); 1761 return -EINVAL; 1762 } 1763 } 1764 1765 err = spapr_irq_post_load(spapr, version_id); 1766 if (err) { 1767 return err; 1768 } 1769 1770 return err; 1771 } 1772 1773 static int spapr_pre_save(void *opaque) 1774 { 1775 int rc; 1776 1777 rc = spapr_caps_pre_save(opaque); 1778 if (rc) { 1779 return rc; 1780 } 1781 1782 return 0; 1783 } 1784 1785 static bool version_before_3(void *opaque, int version_id) 1786 { 1787 return version_id < 3; 1788 } 1789 1790 static bool spapr_pending_events_needed(void *opaque) 1791 { 1792 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1793 return !QTAILQ_EMPTY(&spapr->pending_events); 1794 } 1795 1796 static const VMStateDescription vmstate_spapr_event_entry = { 1797 .name = "spapr_event_log_entry", 1798 .version_id = 1, 1799 .minimum_version_id = 1, 1800 .fields = (VMStateField[]) { 1801 VMSTATE_UINT32(summary, SpaprEventLogEntry), 1802 VMSTATE_UINT32(extended_length, SpaprEventLogEntry), 1803 VMSTATE_VBUFFER_ALLOC_UINT32(extended_log, SpaprEventLogEntry, 0, 1804 NULL, extended_length), 1805 VMSTATE_END_OF_LIST() 1806 }, 1807 }; 1808 1809 static const VMStateDescription vmstate_spapr_pending_events = { 1810 .name = "spapr_pending_events", 1811 .version_id = 1, 1812 .minimum_version_id = 1, 1813 .needed = spapr_pending_events_needed, 1814 .fields = (VMStateField[]) { 1815 VMSTATE_QTAILQ_V(pending_events, SpaprMachineState, 1, 1816 vmstate_spapr_event_entry, SpaprEventLogEntry, next), 1817 VMSTATE_END_OF_LIST() 1818 }, 1819 }; 1820 1821 static bool spapr_ov5_cas_needed(void *opaque) 1822 { 1823 SpaprMachineState *spapr = opaque; 1824 SpaprOptionVector *ov5_mask = spapr_ovec_new(); 1825 bool cas_needed; 1826 1827 /* Prior to the introduction of SpaprOptionVector, we had two option 1828 * vectors we dealt with: OV5_FORM1_AFFINITY, and OV5_DRCONF_MEMORY. 1829 * Both of these options encode machine topology into the device-tree 1830 * in such a way that the now-booted OS should still be able to interact 1831 * appropriately with QEMU regardless of what options were actually 1832 * negotiatied on the source side. 1833 * 1834 * As such, we can avoid migrating the CAS-negotiated options if these 1835 * are the only options available on the current machine/platform. 1836 * Since these are the only options available for pseries-2.7 and 1837 * earlier, this allows us to maintain old->new/new->old migration 1838 * compatibility. 1839 * 1840 * For QEMU 2.8+, there are additional CAS-negotiatable options available 1841 * via default pseries-2.8 machines and explicit command-line parameters. 1842 * Some of these options, like OV5_HP_EVT, *do* require QEMU to be aware 1843 * of the actual CAS-negotiated values to continue working properly. For 1844 * example, availability of memory unplug depends on knowing whether 1845 * OV5_HP_EVT was negotiated via CAS. 1846 * 1847 * Thus, for any cases where the set of available CAS-negotiatable 1848 * options extends beyond OV5_FORM1_AFFINITY and OV5_DRCONF_MEMORY, we 1849 * include the CAS-negotiated options in the migration stream, unless 1850 * if they affect boot time behaviour only. 1851 */ 1852 spapr_ovec_set(ov5_mask, OV5_FORM1_AFFINITY); 1853 spapr_ovec_set(ov5_mask, OV5_DRCONF_MEMORY); 1854 spapr_ovec_set(ov5_mask, OV5_DRMEM_V2); 1855 1856 /* We need extra information if we have any bits outside the mask 1857 * defined above */ 1858 cas_needed = !spapr_ovec_subset(spapr->ov5, ov5_mask); 1859 1860 spapr_ovec_cleanup(ov5_mask); 1861 1862 return cas_needed; 1863 } 1864 1865 static const VMStateDescription vmstate_spapr_ov5_cas = { 1866 .name = "spapr_option_vector_ov5_cas", 1867 .version_id = 1, 1868 .minimum_version_id = 1, 1869 .needed = spapr_ov5_cas_needed, 1870 .fields = (VMStateField[]) { 1871 VMSTATE_STRUCT_POINTER_V(ov5_cas, SpaprMachineState, 1, 1872 vmstate_spapr_ovec, SpaprOptionVector), 1873 VMSTATE_END_OF_LIST() 1874 }, 1875 }; 1876 1877 static bool spapr_patb_entry_needed(void *opaque) 1878 { 1879 SpaprMachineState *spapr = opaque; 1880 1881 return !!spapr->patb_entry; 1882 } 1883 1884 static const VMStateDescription vmstate_spapr_patb_entry = { 1885 .name = "spapr_patb_entry", 1886 .version_id = 1, 1887 .minimum_version_id = 1, 1888 .needed = spapr_patb_entry_needed, 1889 .fields = (VMStateField[]) { 1890 VMSTATE_UINT64(patb_entry, SpaprMachineState), 1891 VMSTATE_END_OF_LIST() 1892 }, 1893 }; 1894 1895 static bool spapr_irq_map_needed(void *opaque) 1896 { 1897 SpaprMachineState *spapr = opaque; 1898 1899 return spapr->irq_map && !bitmap_empty(spapr->irq_map, spapr->irq_map_nr); 1900 } 1901 1902 static const VMStateDescription vmstate_spapr_irq_map = { 1903 .name = "spapr_irq_map", 1904 .version_id = 1, 1905 .minimum_version_id = 1, 1906 .needed = spapr_irq_map_needed, 1907 .fields = (VMStateField[]) { 1908 VMSTATE_BITMAP(irq_map, SpaprMachineState, 0, irq_map_nr), 1909 VMSTATE_END_OF_LIST() 1910 }, 1911 }; 1912 1913 static bool spapr_dtb_needed(void *opaque) 1914 { 1915 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(opaque); 1916 1917 return smc->update_dt_enabled; 1918 } 1919 1920 static int spapr_dtb_pre_load(void *opaque) 1921 { 1922 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1923 1924 g_free(spapr->fdt_blob); 1925 spapr->fdt_blob = NULL; 1926 spapr->fdt_size = 0; 1927 1928 return 0; 1929 } 1930 1931 static const VMStateDescription vmstate_spapr_dtb = { 1932 .name = "spapr_dtb", 1933 .version_id = 1, 1934 .minimum_version_id = 1, 1935 .needed = spapr_dtb_needed, 1936 .pre_load = spapr_dtb_pre_load, 1937 .fields = (VMStateField[]) { 1938 VMSTATE_UINT32(fdt_initial_size, SpaprMachineState), 1939 VMSTATE_UINT32(fdt_size, SpaprMachineState), 1940 VMSTATE_VBUFFER_ALLOC_UINT32(fdt_blob, SpaprMachineState, 0, NULL, 1941 fdt_size), 1942 VMSTATE_END_OF_LIST() 1943 }, 1944 }; 1945 1946 static bool spapr_fwnmi_needed(void *opaque) 1947 { 1948 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1949 1950 return spapr->fwnmi_machine_check_addr != -1; 1951 } 1952 1953 static int spapr_fwnmi_pre_save(void *opaque) 1954 { 1955 SpaprMachineState *spapr = (SpaprMachineState *)opaque; 1956 1957 /* 1958 * Check if machine check handling is in progress and print a 1959 * warning message. 1960 */ 1961 if (spapr->fwnmi_machine_check_interlock != -1) { 1962 warn_report("A machine check is being handled during migration. The" 1963 "handler may run and log hardware error on the destination"); 1964 } 1965 1966 return 0; 1967 } 1968 1969 static const VMStateDescription vmstate_spapr_fwnmi = { 1970 .name = "spapr_fwnmi", 1971 .version_id = 1, 1972 .minimum_version_id = 1, 1973 .needed = spapr_fwnmi_needed, 1974 .pre_save = spapr_fwnmi_pre_save, 1975 .fields = (VMStateField[]) { 1976 VMSTATE_UINT64(fwnmi_system_reset_addr, SpaprMachineState), 1977 VMSTATE_UINT64(fwnmi_machine_check_addr, SpaprMachineState), 1978 VMSTATE_INT32(fwnmi_machine_check_interlock, SpaprMachineState), 1979 VMSTATE_END_OF_LIST() 1980 }, 1981 }; 1982 1983 static const VMStateDescription vmstate_spapr = { 1984 .name = "spapr", 1985 .version_id = 3, 1986 .minimum_version_id = 1, 1987 .pre_load = spapr_pre_load, 1988 .post_load = spapr_post_load, 1989 .pre_save = spapr_pre_save, 1990 .fields = (VMStateField[]) { 1991 /* used to be @next_irq */ 1992 VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), 1993 1994 /* RTC offset */ 1995 VMSTATE_UINT64_TEST(rtc_offset, SpaprMachineState, version_before_3), 1996 1997 VMSTATE_PPC_TIMEBASE_V(tb, SpaprMachineState, 2), 1998 VMSTATE_END_OF_LIST() 1999 }, 2000 .subsections = (const VMStateDescription*[]) { 2001 &vmstate_spapr_ov5_cas, 2002 &vmstate_spapr_patb_entry, 2003 &vmstate_spapr_pending_events, 2004 &vmstate_spapr_cap_htm, 2005 &vmstate_spapr_cap_vsx, 2006 &vmstate_spapr_cap_dfp, 2007 &vmstate_spapr_cap_cfpc, 2008 &vmstate_spapr_cap_sbbc, 2009 &vmstate_spapr_cap_ibs, 2010 &vmstate_spapr_cap_hpt_maxpagesize, 2011 &vmstate_spapr_irq_map, 2012 &vmstate_spapr_cap_nested_kvm_hv, 2013 &vmstate_spapr_dtb, 2014 &vmstate_spapr_cap_large_decr, 2015 &vmstate_spapr_cap_ccf_assist, 2016 &vmstate_spapr_cap_fwnmi, 2017 &vmstate_spapr_fwnmi, 2018 NULL 2019 } 2020 }; 2021 2022 static int htab_save_setup(QEMUFile *f, void *opaque) 2023 { 2024 SpaprMachineState *spapr = opaque; 2025 2026 /* "Iteration" header */ 2027 if (!spapr->htab_shift) { 2028 qemu_put_be32(f, -1); 2029 } else { 2030 qemu_put_be32(f, spapr->htab_shift); 2031 } 2032 2033 if (spapr->htab) { 2034 spapr->htab_save_index = 0; 2035 spapr->htab_first_pass = true; 2036 } else { 2037 if (spapr->htab_shift) { 2038 assert(kvm_enabled()); 2039 } 2040 } 2041 2042 2043 return 0; 2044 } 2045 2046 static void htab_save_chunk(QEMUFile *f, SpaprMachineState *spapr, 2047 int chunkstart, int n_valid, int n_invalid) 2048 { 2049 qemu_put_be32(f, chunkstart); 2050 qemu_put_be16(f, n_valid); 2051 qemu_put_be16(f, n_invalid); 2052 qemu_put_buffer(f, HPTE(spapr->htab, chunkstart), 2053 HASH_PTE_SIZE_64 * n_valid); 2054 } 2055 2056 static void htab_save_end_marker(QEMUFile *f) 2057 { 2058 qemu_put_be32(f, 0); 2059 qemu_put_be16(f, 0); 2060 qemu_put_be16(f, 0); 2061 } 2062 2063 static void htab_save_first_pass(QEMUFile *f, SpaprMachineState *spapr, 2064 int64_t max_ns) 2065 { 2066 bool has_timeout = max_ns != -1; 2067 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 2068 int index = spapr->htab_save_index; 2069 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 2070 2071 assert(spapr->htab_first_pass); 2072 2073 do { 2074 int chunkstart; 2075 2076 /* Consume invalid HPTEs */ 2077 while ((index < htabslots) 2078 && !HPTE_VALID(HPTE(spapr->htab, index))) { 2079 CLEAN_HPTE(HPTE(spapr->htab, index)); 2080 index++; 2081 } 2082 2083 /* Consume valid HPTEs */ 2084 chunkstart = index; 2085 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 2086 && HPTE_VALID(HPTE(spapr->htab, index))) { 2087 CLEAN_HPTE(HPTE(spapr->htab, index)); 2088 index++; 2089 } 2090 2091 if (index > chunkstart) { 2092 int n_valid = index - chunkstart; 2093 2094 htab_save_chunk(f, spapr, chunkstart, n_valid, 0); 2095 2096 if (has_timeout && 2097 (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 2098 break; 2099 } 2100 } 2101 } while ((index < htabslots) && !qemu_file_rate_limit(f)); 2102 2103 if (index >= htabslots) { 2104 assert(index == htabslots); 2105 index = 0; 2106 spapr->htab_first_pass = false; 2107 } 2108 spapr->htab_save_index = index; 2109 } 2110 2111 static int htab_save_later_pass(QEMUFile *f, SpaprMachineState *spapr, 2112 int64_t max_ns) 2113 { 2114 bool final = max_ns < 0; 2115 int htabslots = HTAB_SIZE(spapr) / HASH_PTE_SIZE_64; 2116 int examined = 0, sent = 0; 2117 int index = spapr->htab_save_index; 2118 int64_t starttime = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); 2119 2120 assert(!spapr->htab_first_pass); 2121 2122 do { 2123 int chunkstart, invalidstart; 2124 2125 /* Consume non-dirty HPTEs */ 2126 while ((index < htabslots) 2127 && !HPTE_DIRTY(HPTE(spapr->htab, index))) { 2128 index++; 2129 examined++; 2130 } 2131 2132 chunkstart = index; 2133 /* Consume valid dirty HPTEs */ 2134 while ((index < htabslots) && (index - chunkstart < USHRT_MAX) 2135 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2136 && HPTE_VALID(HPTE(spapr->htab, index))) { 2137 CLEAN_HPTE(HPTE(spapr->htab, index)); 2138 index++; 2139 examined++; 2140 } 2141 2142 invalidstart = index; 2143 /* Consume invalid dirty HPTEs */ 2144 while ((index < htabslots) && (index - invalidstart < USHRT_MAX) 2145 && HPTE_DIRTY(HPTE(spapr->htab, index)) 2146 && !HPTE_VALID(HPTE(spapr->htab, index))) { 2147 CLEAN_HPTE(HPTE(spapr->htab, index)); 2148 index++; 2149 examined++; 2150 } 2151 2152 if (index > chunkstart) { 2153 int n_valid = invalidstart - chunkstart; 2154 int n_invalid = index - invalidstart; 2155 2156 htab_save_chunk(f, spapr, chunkstart, n_valid, n_invalid); 2157 sent += index - chunkstart; 2158 2159 if (!final && (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - starttime) > max_ns) { 2160 break; 2161 } 2162 } 2163 2164 if (examined >= htabslots) { 2165 break; 2166 } 2167 2168 if (index >= htabslots) { 2169 assert(index == htabslots); 2170 index = 0; 2171 } 2172 } while ((examined < htabslots) && (!qemu_file_rate_limit(f) || final)); 2173 2174 if (index >= htabslots) { 2175 assert(index == htabslots); 2176 index = 0; 2177 } 2178 2179 spapr->htab_save_index = index; 2180 2181 return (examined >= htabslots) && (sent == 0) ? 1 : 0; 2182 } 2183 2184 #define MAX_ITERATION_NS 5000000 /* 5 ms */ 2185 #define MAX_KVM_BUF_SIZE 2048 2186 2187 static int htab_save_iterate(QEMUFile *f, void *opaque) 2188 { 2189 SpaprMachineState *spapr = opaque; 2190 int fd; 2191 int rc = 0; 2192 2193 /* Iteration header */ 2194 if (!spapr->htab_shift) { 2195 qemu_put_be32(f, -1); 2196 return 1; 2197 } else { 2198 qemu_put_be32(f, 0); 2199 } 2200 2201 if (!spapr->htab) { 2202 assert(kvm_enabled()); 2203 2204 fd = get_htab_fd(spapr); 2205 if (fd < 0) { 2206 return fd; 2207 } 2208 2209 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, MAX_ITERATION_NS); 2210 if (rc < 0) { 2211 return rc; 2212 } 2213 } else if (spapr->htab_first_pass) { 2214 htab_save_first_pass(f, spapr, MAX_ITERATION_NS); 2215 } else { 2216 rc = htab_save_later_pass(f, spapr, MAX_ITERATION_NS); 2217 } 2218 2219 htab_save_end_marker(f); 2220 2221 return rc; 2222 } 2223 2224 static int htab_save_complete(QEMUFile *f, void *opaque) 2225 { 2226 SpaprMachineState *spapr = opaque; 2227 int fd; 2228 2229 /* Iteration header */ 2230 if (!spapr->htab_shift) { 2231 qemu_put_be32(f, -1); 2232 return 0; 2233 } else { 2234 qemu_put_be32(f, 0); 2235 } 2236 2237 if (!spapr->htab) { 2238 int rc; 2239 2240 assert(kvm_enabled()); 2241 2242 fd = get_htab_fd(spapr); 2243 if (fd < 0) { 2244 return fd; 2245 } 2246 2247 rc = kvmppc_save_htab(f, fd, MAX_KVM_BUF_SIZE, -1); 2248 if (rc < 0) { 2249 return rc; 2250 } 2251 } else { 2252 if (spapr->htab_first_pass) { 2253 htab_save_first_pass(f, spapr, -1); 2254 } 2255 htab_save_later_pass(f, spapr, -1); 2256 } 2257 2258 /* End marker */ 2259 htab_save_end_marker(f); 2260 2261 return 0; 2262 } 2263 2264 static int htab_load(QEMUFile *f, void *opaque, int version_id) 2265 { 2266 SpaprMachineState *spapr = opaque; 2267 uint32_t section_hdr; 2268 int fd = -1; 2269 Error *local_err = NULL; 2270 2271 if (version_id < 1 || version_id > 1) { 2272 error_report("htab_load() bad version"); 2273 return -EINVAL; 2274 } 2275 2276 section_hdr = qemu_get_be32(f); 2277 2278 if (section_hdr == -1) { 2279 spapr_free_hpt(spapr); 2280 return 0; 2281 } 2282 2283 if (section_hdr) { 2284 /* First section gives the htab size */ 2285 spapr_reallocate_hpt(spapr, section_hdr, &local_err); 2286 if (local_err) { 2287 error_report_err(local_err); 2288 return -EINVAL; 2289 } 2290 return 0; 2291 } 2292 2293 if (!spapr->htab) { 2294 assert(kvm_enabled()); 2295 2296 fd = kvmppc_get_htab_fd(true, 0, &local_err); 2297 if (fd < 0) { 2298 error_report_err(local_err); 2299 return fd; 2300 } 2301 } 2302 2303 while (true) { 2304 uint32_t index; 2305 uint16_t n_valid, n_invalid; 2306 2307 index = qemu_get_be32(f); 2308 n_valid = qemu_get_be16(f); 2309 n_invalid = qemu_get_be16(f); 2310 2311 if ((index == 0) && (n_valid == 0) && (n_invalid == 0)) { 2312 /* End of Stream */ 2313 break; 2314 } 2315 2316 if ((index + n_valid + n_invalid) > 2317 (HTAB_SIZE(spapr) / HASH_PTE_SIZE_64)) { 2318 /* Bad index in stream */ 2319 error_report( 2320 "htab_load() bad index %d (%hd+%hd entries) in htab stream (htab_shift=%d)", 2321 index, n_valid, n_invalid, spapr->htab_shift); 2322 return -EINVAL; 2323 } 2324 2325 if (spapr->htab) { 2326 if (n_valid) { 2327 qemu_get_buffer(f, HPTE(spapr->htab, index), 2328 HASH_PTE_SIZE_64 * n_valid); 2329 } 2330 if (n_invalid) { 2331 memset(HPTE(spapr->htab, index + n_valid), 0, 2332 HASH_PTE_SIZE_64 * n_invalid); 2333 } 2334 } else { 2335 int rc; 2336 2337 assert(fd >= 0); 2338 2339 rc = kvmppc_load_htab_chunk(f, fd, index, n_valid, n_invalid); 2340 if (rc < 0) { 2341 return rc; 2342 } 2343 } 2344 } 2345 2346 if (!spapr->htab) { 2347 assert(fd >= 0); 2348 close(fd); 2349 } 2350 2351 return 0; 2352 } 2353 2354 static void htab_save_cleanup(void *opaque) 2355 { 2356 SpaprMachineState *spapr = opaque; 2357 2358 close_htab_fd(spapr); 2359 } 2360 2361 static SaveVMHandlers savevm_htab_handlers = { 2362 .save_setup = htab_save_setup, 2363 .save_live_iterate = htab_save_iterate, 2364 .save_live_complete_precopy = htab_save_complete, 2365 .save_cleanup = htab_save_cleanup, 2366 .load_state = htab_load, 2367 }; 2368 2369 static void spapr_boot_set(void *opaque, const char *boot_device, 2370 Error **errp) 2371 { 2372 MachineState *machine = MACHINE(opaque); 2373 machine->boot_order = g_strdup(boot_device); 2374 } 2375 2376 static void spapr_create_lmb_dr_connectors(SpaprMachineState *spapr) 2377 { 2378 MachineState *machine = MACHINE(spapr); 2379 uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE; 2380 uint32_t nr_lmbs = (machine->maxram_size - machine->ram_size)/lmb_size; 2381 int i; 2382 2383 for (i = 0; i < nr_lmbs; i++) { 2384 uint64_t addr; 2385 2386 addr = i * lmb_size + machine->device_memory->base; 2387 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, 2388 addr / lmb_size); 2389 } 2390 } 2391 2392 /* 2393 * If RAM size, maxmem size and individual node mem sizes aren't aligned 2394 * to SPAPR_MEMORY_BLOCK_SIZE(256MB), then refuse to start the guest 2395 * since we can't support such unaligned sizes with DRCONF_MEMORY. 2396 */ 2397 static void spapr_validate_node_memory(MachineState *machine, Error **errp) 2398 { 2399 int i; 2400 2401 if (machine->ram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2402 error_setg(errp, "Memory size 0x" RAM_ADDR_FMT 2403 " is not aligned to %" PRIu64 " MiB", 2404 machine->ram_size, 2405 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2406 return; 2407 } 2408 2409 if (machine->maxram_size % SPAPR_MEMORY_BLOCK_SIZE) { 2410 error_setg(errp, "Maximum memory size 0x" RAM_ADDR_FMT 2411 " is not aligned to %" PRIu64 " MiB", 2412 machine->ram_size, 2413 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2414 return; 2415 } 2416 2417 for (i = 0; i < machine->numa_state->num_nodes; i++) { 2418 if (machine->numa_state->nodes[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) { 2419 error_setg(errp, 2420 "Node %d memory size 0x%" PRIx64 2421 " is not aligned to %" PRIu64 " MiB", 2422 i, machine->numa_state->nodes[i].node_mem, 2423 SPAPR_MEMORY_BLOCK_SIZE / MiB); 2424 return; 2425 } 2426 } 2427 } 2428 2429 /* find cpu slot in machine->possible_cpus by core_id */ 2430 static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int *idx) 2431 { 2432 int index = id / ms->smp.threads; 2433 2434 if (index >= ms->possible_cpus->len) { 2435 return NULL; 2436 } 2437 if (idx) { 2438 *idx = index; 2439 } 2440 return &ms->possible_cpus->cpus[index]; 2441 } 2442 2443 static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp) 2444 { 2445 MachineState *ms = MACHINE(spapr); 2446 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 2447 Error *local_err = NULL; 2448 bool vsmt_user = !!spapr->vsmt; 2449 int kvm_smt = kvmppc_smt_threads(); 2450 int ret; 2451 unsigned int smp_threads = ms->smp.threads; 2452 2453 if (!kvm_enabled() && (smp_threads > 1)) { 2454 error_setg(errp, "TCG cannot support more than 1 thread/core " 2455 "on a pseries machine"); 2456 return; 2457 } 2458 if (!is_power_of_2(smp_threads)) { 2459 error_setg(errp, "Cannot support %d threads/core on a pseries " 2460 "machine because it must be a power of 2", smp_threads); 2461 return; 2462 } 2463 2464 /* Detemine the VSMT mode to use: */ 2465 if (vsmt_user) { 2466 if (spapr->vsmt < smp_threads) { 2467 error_setg(errp, "Cannot support VSMT mode %d" 2468 " because it must be >= threads/core (%d)", 2469 spapr->vsmt, smp_threads); 2470 return; 2471 } 2472 /* In this case, spapr->vsmt has been set by the command line */ 2473 } else if (!smc->smp_threads_vsmt) { 2474 /* 2475 * Default VSMT value is tricky, because we need it to be as 2476 * consistent as possible (for migration), but this requires 2477 * changing it for at least some existing cases. We pick 8 as 2478 * the value that we'd get with KVM on POWER8, the 2479 * overwhelmingly common case in production systems. 2480 */ 2481 spapr->vsmt = MAX(8, smp_threads); 2482 } else { 2483 spapr->vsmt = smp_threads; 2484 } 2485 2486 /* KVM: If necessary, set the SMT mode: */ 2487 if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { 2488 ret = kvmppc_set_smt_threads(spapr->vsmt); 2489 if (ret) { 2490 /* Looks like KVM isn't able to change VSMT mode */ 2491 error_setg(&local_err, 2492 "Failed to set KVM's VSMT mode to %d (errno %d)", 2493 spapr->vsmt, ret); 2494 /* We can live with that if the default one is big enough 2495 * for the number of threads, and a submultiple of the one 2496 * we want. In this case we'll waste some vcpu ids, but 2497 * behaviour will be correct */ 2498 if ((kvm_smt >= smp_threads) && ((spapr->vsmt % kvm_smt) == 0)) { 2499 warn_report_err(local_err); 2500 } else { 2501 if (!vsmt_user) { 2502 error_append_hint(&local_err, 2503 "On PPC, a VM with %d threads/core" 2504 " on a host with %d threads/core" 2505 " requires the use of VSMT mode %d.\n", 2506 smp_threads, kvm_smt, spapr->vsmt); 2507 } 2508 kvmppc_error_append_smt_possible_hint(&local_err); 2509 error_propagate(errp, local_err); 2510 } 2511 } 2512 } 2513 /* else TCG: nothing to do currently */ 2514 } 2515 2516 static void spapr_init_cpus(SpaprMachineState *spapr) 2517 { 2518 MachineState *machine = MACHINE(spapr); 2519 MachineClass *mc = MACHINE_GET_CLASS(machine); 2520 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2521 const char *type = spapr_get_cpu_core_type(machine->cpu_type); 2522 const CPUArchIdList *possible_cpus; 2523 unsigned int smp_cpus = machine->smp.cpus; 2524 unsigned int smp_threads = machine->smp.threads; 2525 unsigned int max_cpus = machine->smp.max_cpus; 2526 int boot_cores_nr = smp_cpus / smp_threads; 2527 int i; 2528 2529 possible_cpus = mc->possible_cpu_arch_ids(machine); 2530 if (mc->has_hotpluggable_cpus) { 2531 if (smp_cpus % smp_threads) { 2532 error_report("smp_cpus (%u) must be multiple of threads (%u)", 2533 smp_cpus, smp_threads); 2534 exit(1); 2535 } 2536 if (max_cpus % smp_threads) { 2537 error_report("max_cpus (%u) must be multiple of threads (%u)", 2538 max_cpus, smp_threads); 2539 exit(1); 2540 } 2541 } else { 2542 if (max_cpus != smp_cpus) { 2543 error_report("This machine version does not support CPU hotplug"); 2544 exit(1); 2545 } 2546 boot_cores_nr = possible_cpus->len; 2547 } 2548 2549 if (smc->pre_2_10_has_unused_icps) { 2550 int i; 2551 2552 for (i = 0; i < spapr_max_server_number(spapr); i++) { 2553 /* Dummy entries get deregistered when real ICPState objects 2554 * are registered during CPU core hotplug. 2555 */ 2556 pre_2_10_vmstate_register_dummy_icp(i); 2557 } 2558 } 2559 2560 for (i = 0; i < possible_cpus->len; i++) { 2561 int core_id = i * smp_threads; 2562 2563 if (mc->has_hotpluggable_cpus) { 2564 spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, 2565 spapr_vcpu_id(spapr, core_id)); 2566 } 2567 2568 if (i < boot_cores_nr) { 2569 Object *core = object_new(type); 2570 int nr_threads = smp_threads; 2571 2572 /* Handle the partially filled core for older machine types */ 2573 if ((i + 1) * smp_threads >= smp_cpus) { 2574 nr_threads = smp_cpus - i * smp_threads; 2575 } 2576 2577 object_property_set_int(core, "nr-threads", nr_threads, 2578 &error_fatal); 2579 object_property_set_int(core, CPU_CORE_PROP_CORE_ID, core_id, 2580 &error_fatal); 2581 qdev_realize(DEVICE(core), NULL, &error_fatal); 2582 2583 object_unref(core); 2584 } 2585 } 2586 } 2587 2588 static PCIHostState *spapr_create_default_phb(void) 2589 { 2590 DeviceState *dev; 2591 2592 dev = qdev_new(TYPE_SPAPR_PCI_HOST_BRIDGE); 2593 qdev_prop_set_uint32(dev, "index", 0); 2594 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 2595 2596 return PCI_HOST_BRIDGE(dev); 2597 } 2598 2599 static hwaddr spapr_rma_size(SpaprMachineState *spapr, Error **errp) 2600 { 2601 MachineState *machine = MACHINE(spapr); 2602 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 2603 hwaddr rma_size = machine->ram_size; 2604 hwaddr node0_size = spapr_node0_size(machine); 2605 2606 /* RMA has to fit in the first NUMA node */ 2607 rma_size = MIN(rma_size, node0_size); 2608 2609 /* 2610 * VRMA access is via a special 1TiB SLB mapping, so the RMA can 2611 * never exceed that 2612 */ 2613 rma_size = MIN(rma_size, 1 * TiB); 2614 2615 /* 2616 * Clamp the RMA size based on machine type. This is for 2617 * migration compatibility with older qemu versions, which limited 2618 * the RMA size for complicated and mostly bad reasons. 2619 */ 2620 if (smc->rma_limit) { 2621 rma_size = MIN(rma_size, smc->rma_limit); 2622 } 2623 2624 if (rma_size < MIN_RMA_SLOF) { 2625 error_setg(errp, 2626 "pSeries SLOF firmware requires >= %" HWADDR_PRIx 2627 "ldMiB guest RMA (Real Mode Area memory)", 2628 MIN_RMA_SLOF / MiB); 2629 return 0; 2630 } 2631 2632 return rma_size; 2633 } 2634 2635 /* pSeries LPAR / sPAPR hardware init */ 2636 static void spapr_machine_init(MachineState *machine) 2637 { 2638 SpaprMachineState *spapr = SPAPR_MACHINE(machine); 2639 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine); 2640 MachineClass *mc = MACHINE_GET_CLASS(machine); 2641 const char *kernel_filename = machine->kernel_filename; 2642 const char *initrd_filename = machine->initrd_filename; 2643 PCIHostState *phb; 2644 int i; 2645 MemoryRegion *sysmem = get_system_memory(); 2646 long load_limit, fw_size; 2647 char *filename; 2648 Error *resize_hpt_err = NULL; 2649 2650 msi_nonbroken = true; 2651 2652 QLIST_INIT(&spapr->phbs); 2653 QTAILQ_INIT(&spapr->pending_dimm_unplugs); 2654 2655 /* Determine capabilities to run with */ 2656 spapr_caps_init(spapr); 2657 2658 kvmppc_check_papr_resize_hpt(&resize_hpt_err); 2659 if (spapr->resize_hpt == SPAPR_RESIZE_HPT_DEFAULT) { 2660 /* 2661 * If the user explicitly requested a mode we should either 2662 * supply it, or fail completely (which we do below). But if 2663 * it's not set explicitly, we reset our mode to something 2664 * that works 2665 */ 2666 if (resize_hpt_err) { 2667 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 2668 error_free(resize_hpt_err); 2669 resize_hpt_err = NULL; 2670 } else { 2671 spapr->resize_hpt = smc->resize_hpt_default; 2672 } 2673 } 2674 2675 assert(spapr->resize_hpt != SPAPR_RESIZE_HPT_DEFAULT); 2676 2677 if ((spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) && resize_hpt_err) { 2678 /* 2679 * User requested HPT resize, but this host can't supply it. Bail out 2680 */ 2681 error_report_err(resize_hpt_err); 2682 exit(1); 2683 } 2684 error_free(resize_hpt_err); 2685 2686 spapr->rma_size = spapr_rma_size(spapr, &error_fatal); 2687 2688 /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */ 2689 load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD; 2690 2691 /* 2692 * VSMT must be set in order to be able to compute VCPU ids, ie to 2693 * call spapr_max_server_number() or spapr_vcpu_id(). 2694 */ 2695 spapr_set_vsmt_mode(spapr, &error_fatal); 2696 2697 /* Set up Interrupt Controller before we create the VCPUs */ 2698 spapr_irq_init(spapr, &error_fatal); 2699 2700 /* Set up containers for ibm,client-architecture-support negotiated options 2701 */ 2702 spapr->ov5 = spapr_ovec_new(); 2703 spapr->ov5_cas = spapr_ovec_new(); 2704 2705 if (smc->dr_lmb_enabled) { 2706 spapr_ovec_set(spapr->ov5, OV5_DRCONF_MEMORY); 2707 spapr_validate_node_memory(machine, &error_fatal); 2708 } 2709 2710 spapr_ovec_set(spapr->ov5, OV5_FORM1_AFFINITY); 2711 2712 /* advertise support for dedicated HP event source to guests */ 2713 if (spapr->use_hotplug_event_source) { 2714 spapr_ovec_set(spapr->ov5, OV5_HP_EVT); 2715 } 2716 2717 /* advertise support for HPT resizing */ 2718 if (spapr->resize_hpt != SPAPR_RESIZE_HPT_DISABLED) { 2719 spapr_ovec_set(spapr->ov5, OV5_HPT_RESIZE); 2720 } 2721 2722 /* advertise support for ibm,dyamic-memory-v2 */ 2723 spapr_ovec_set(spapr->ov5, OV5_DRMEM_V2); 2724 2725 /* advertise XIVE on POWER9 machines */ 2726 if (spapr->irq->xive) { 2727 spapr_ovec_set(spapr->ov5, OV5_XIVE_EXPLOIT); 2728 } 2729 2730 /* init CPUs */ 2731 spapr_init_cpus(spapr); 2732 2733 /* 2734 * check we don't have a memory-less/cpu-less NUMA node 2735 * Firmware relies on the existing memory/cpu topology to provide the 2736 * NUMA topology to the kernel. 2737 * And the linux kernel needs to know the NUMA topology at start 2738 * to be able to hotplug CPUs later. 2739 */ 2740 if (machine->numa_state->num_nodes) { 2741 for (i = 0; i < machine->numa_state->num_nodes; ++i) { 2742 /* check for memory-less node */ 2743 if (machine->numa_state->nodes[i].node_mem == 0) { 2744 CPUState *cs; 2745 int found = 0; 2746 /* check for cpu-less node */ 2747 CPU_FOREACH(cs) { 2748 PowerPCCPU *cpu = POWERPC_CPU(cs); 2749 if (cpu->node_id == i) { 2750 found = 1; 2751 break; 2752 } 2753 } 2754 /* memory-less and cpu-less node */ 2755 if (!found) { 2756 error_report( 2757 "Memory-less/cpu-less nodes are not supported (node %d)", 2758 i); 2759 exit(1); 2760 } 2761 } 2762 } 2763 2764 } 2765 2766 /* 2767 * NVLink2-connected GPU RAM needs to be placed on a separate NUMA node. 2768 * We assign a new numa ID per GPU in spapr_pci_collect_nvgpu() which is 2769 * called from vPHB reset handler so we initialize the counter here. 2770 * If no NUMA is configured from the QEMU side, we start from 1 as GPU RAM 2771 * must be equally distant from any other node. 2772 * The final value of spapr->gpu_numa_id is going to be written to 2773 * max-associativity-domains in spapr_build_fdt(). 2774 */ 2775 spapr->gpu_numa_id = MAX(1, machine->numa_state->num_nodes); 2776 2777 /* Init numa_assoc_array */ 2778 spapr_numa_associativity_init(spapr, machine); 2779 2780 if ((!kvm_enabled() || kvmppc_has_cap_mmu_radix()) && 2781 ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, 2782 spapr->max_compat_pvr)) { 2783 spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_300); 2784 /* KVM and TCG always allow GTSE with radix... */ 2785 spapr_ovec_set(spapr->ov5, OV5_MMU_RADIX_GTSE); 2786 } 2787 /* ... but not with hash (currently). */ 2788 2789 if (kvm_enabled()) { 2790 /* Enable H_LOGICAL_CI_* so SLOF can talk to in-kernel devices */ 2791 kvmppc_enable_logical_ci_hcalls(); 2792 kvmppc_enable_set_mode_hcall(); 2793 2794 /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ 2795 kvmppc_enable_clear_ref_mod_hcalls(); 2796 2797 /* Enable H_PAGE_INIT */ 2798 kvmppc_enable_h_page_init(); 2799 } 2800 2801 /* map RAM */ 2802 memory_region_add_subregion(sysmem, 0, machine->ram); 2803 2804 /* always allocate the device memory information */ 2805 machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); 2806 2807 /* initialize hotplug memory address space */ 2808 if (machine->ram_size < machine->maxram_size) { 2809 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; 2810 /* 2811 * Limit the number of hotpluggable memory slots to half the number 2812 * slots that KVM supports, leaving the other half for PCI and other 2813 * devices. However ensure that number of slots doesn't drop below 32. 2814 */ 2815 int max_memslots = kvm_enabled() ? kvm_get_max_memslots() / 2 : 2816 SPAPR_MAX_RAM_SLOTS; 2817 2818 if (max_memslots < SPAPR_MAX_RAM_SLOTS) { 2819 max_memslots = SPAPR_MAX_RAM_SLOTS; 2820 } 2821 if (machine->ram_slots > max_memslots) { 2822 error_report("Specified number of memory slots %" 2823 PRIu64" exceeds max supported %d", 2824 machine->ram_slots, max_memslots); 2825 exit(1); 2826 } 2827 2828 machine->device_memory->base = ROUND_UP(machine->ram_size, 2829 SPAPR_DEVICE_MEM_ALIGN); 2830 memory_region_init(&machine->device_memory->mr, OBJECT(spapr), 2831 "device-memory", device_mem_size); 2832 memory_region_add_subregion(sysmem, machine->device_memory->base, 2833 &machine->device_memory->mr); 2834 } 2835 2836 if (smc->dr_lmb_enabled) { 2837 spapr_create_lmb_dr_connectors(spapr); 2838 } 2839 2840 if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_ON) { 2841 /* Create the error string for live migration blocker */ 2842 error_setg(&spapr->fwnmi_migration_blocker, 2843 "A machine check is being handled during migration. The handler" 2844 "may run and log hardware error on the destination"); 2845 } 2846 2847 if (mc->nvdimm_supported) { 2848 spapr_create_nvdimm_dr_connectors(spapr); 2849 } 2850 2851 /* Set up RTAS event infrastructure */ 2852 spapr_events_init(spapr); 2853 2854 /* Set up the RTC RTAS interfaces */ 2855 spapr_rtc_create(spapr); 2856 2857 /* Set up VIO bus */ 2858 spapr->vio_bus = spapr_vio_bus_init(); 2859 2860 for (i = 0; i < serial_max_hds(); i++) { 2861 if (serial_hd(i)) { 2862 spapr_vty_create(spapr->vio_bus, serial_hd(i)); 2863 } 2864 } 2865 2866 /* We always have at least the nvram device on VIO */ 2867 spapr_create_nvram(spapr); 2868 2869 /* 2870 * Setup hotplug / dynamic-reconfiguration connectors. top-level 2871 * connectors (described in root DT node's "ibm,drc-types" property) 2872 * are pre-initialized here. additional child connectors (such as 2873 * connectors for a PHBs PCI slots) are added as needed during their 2874 * parent's realization. 2875 */ 2876 if (smc->dr_phb_enabled) { 2877 for (i = 0; i < SPAPR_MAX_PHBS; i++) { 2878 spapr_dr_connector_new(OBJECT(machine), TYPE_SPAPR_DRC_PHB, i); 2879 } 2880 } 2881 2882 /* Set up PCI */ 2883 spapr_pci_rtas_init(); 2884 2885 phb = spapr_create_default_phb(); 2886 2887 for (i = 0; i < nb_nics; i++) { 2888 NICInfo *nd = &nd_table[i]; 2889 2890 if (!nd->model) { 2891 nd->model = g_strdup("spapr-vlan"); 2892 } 2893 2894 if (g_str_equal(nd->model, "spapr-vlan") || 2895 g_str_equal(nd->model, "ibmveth")) { 2896 spapr_vlan_create(spapr->vio_bus, nd); 2897 } else { 2898 pci_nic_init_nofail(&nd_table[i], phb->bus, nd->model, NULL); 2899 } 2900 } 2901 2902 for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) { 2903 spapr_vscsi_create(spapr->vio_bus); 2904 } 2905 2906 /* Graphics */ 2907 if (spapr_vga_init(phb->bus, &error_fatal)) { 2908 spapr->has_graphics = true; 2909 machine->usb |= defaults_enabled() && !machine->usb_disabled; 2910 } 2911 2912 if (machine->usb) { 2913 if (smc->use_ohci_by_default) { 2914 pci_create_simple(phb->bus, -1, "pci-ohci"); 2915 } else { 2916 pci_create_simple(phb->bus, -1, "nec-usb-xhci"); 2917 } 2918 2919 if (spapr->has_graphics) { 2920 USBBus *usb_bus = usb_bus_find(-1); 2921 2922 usb_create_simple(usb_bus, "usb-kbd"); 2923 usb_create_simple(usb_bus, "usb-mouse"); 2924 } 2925 } 2926 2927 if (kernel_filename) { 2928 spapr->kernel_size = load_elf(kernel_filename, NULL, 2929 translate_kernel_address, spapr, 2930 NULL, NULL, NULL, NULL, 1, 2931 PPC_ELF_MACHINE, 0, 0); 2932 if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) { 2933 spapr->kernel_size = load_elf(kernel_filename, NULL, 2934 translate_kernel_address, spapr, 2935 NULL, NULL, NULL, NULL, 0, 2936 PPC_ELF_MACHINE, 0, 0); 2937 spapr->kernel_le = spapr->kernel_size > 0; 2938 } 2939 if (spapr->kernel_size < 0) { 2940 error_report("error loading %s: %s", kernel_filename, 2941 load_elf_strerror(spapr->kernel_size)); 2942 exit(1); 2943 } 2944 2945 /* load initrd */ 2946 if (initrd_filename) { 2947 /* Try to locate the initrd in the gap between the kernel 2948 * and the firmware. Add a bit of space just in case 2949 */ 2950 spapr->initrd_base = (spapr->kernel_addr + spapr->kernel_size 2951 + 0x1ffff) & ~0xffff; 2952 spapr->initrd_size = load_image_targphys(initrd_filename, 2953 spapr->initrd_base, 2954 load_limit 2955 - spapr->initrd_base); 2956 if (spapr->initrd_size < 0) { 2957 error_report("could not load initial ram disk '%s'", 2958 initrd_filename); 2959 exit(1); 2960 } 2961 } 2962 } 2963 2964 if (bios_name == NULL) { 2965 bios_name = FW_FILE_NAME; 2966 } 2967 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 2968 if (!filename) { 2969 error_report("Could not find LPAR firmware '%s'", bios_name); 2970 exit(1); 2971 } 2972 fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE); 2973 if (fw_size <= 0) { 2974 error_report("Could not load LPAR firmware '%s'", filename); 2975 exit(1); 2976 } 2977 g_free(filename); 2978 2979 /* FIXME: Should register things through the MachineState's qdev 2980 * interface, this is a legacy from the sPAPREnvironment structure 2981 * which predated MachineState but had a similar function */ 2982 vmstate_register(NULL, 0, &vmstate_spapr, spapr); 2983 register_savevm_live("spapr/htab", VMSTATE_INSTANCE_ID_ANY, 1, 2984 &savevm_htab_handlers, spapr); 2985 2986 qbus_set_hotplug_handler(sysbus_get_default(), OBJECT(machine)); 2987 2988 qemu_register_boot_set(spapr_boot_set, spapr); 2989 2990 /* 2991 * Nothing needs to be done to resume a suspended guest because 2992 * suspending does not change the machine state, so no need for 2993 * a ->wakeup method. 2994 */ 2995 qemu_register_wakeup_support(); 2996 2997 if (kvm_enabled()) { 2998 /* to stop and start vmclock */ 2999 qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, 3000 &spapr->tb); 3001 3002 kvmppc_spapr_enable_inkernel_multitce(); 3003 } 3004 3005 qemu_cond_init(&spapr->fwnmi_machine_check_interlock_cond); 3006 } 3007 3008 static int spapr_kvm_type(MachineState *machine, const char *vm_type) 3009 { 3010 if (!vm_type) { 3011 return 0; 3012 } 3013 3014 if (!strcmp(vm_type, "HV")) { 3015 return 1; 3016 } 3017 3018 if (!strcmp(vm_type, "PR")) { 3019 return 2; 3020 } 3021 3022 error_report("Unknown kvm-type specified '%s'", vm_type); 3023 exit(1); 3024 } 3025 3026 /* 3027 * Implementation of an interface to adjust firmware path 3028 * for the bootindex property handling. 3029 */ 3030 static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus, 3031 DeviceState *dev) 3032 { 3033 #define CAST(type, obj, name) \ 3034 ((type *)object_dynamic_cast(OBJECT(obj), (name))) 3035 SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE); 3036 SpaprPhbState *phb = CAST(SpaprPhbState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE); 3037 VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON); 3038 3039 if (d) { 3040 void *spapr = CAST(void, bus->parent, "spapr-vscsi"); 3041 VirtIOSCSI *virtio = CAST(VirtIOSCSI, bus->parent, TYPE_VIRTIO_SCSI); 3042 USBDevice *usb = CAST(USBDevice, bus->parent, TYPE_USB_DEVICE); 3043 3044 if (spapr) { 3045 /* 3046 * Replace "channel@0/disk@0,0" with "disk@8000000000000000": 3047 * In the top 16 bits of the 64-bit LUN, we use SRP luns of the form 3048 * 0x8000 | (target << 8) | (bus << 5) | lun 3049 * (see the "Logical unit addressing format" table in SAM5) 3050 */ 3051 unsigned id = 0x8000 | (d->id << 8) | (d->channel << 5) | d->lun; 3052 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3053 (uint64_t)id << 48); 3054 } else if (virtio) { 3055 /* 3056 * We use SRP luns of the form 01000000 | (target << 8) | lun 3057 * in the top 32 bits of the 64-bit LUN 3058 * Note: the quote above is from SLOF and it is wrong, 3059 * the actual binding is: 3060 * swap 0100 or 10 << or 20 << ( target lun-id -- srplun ) 3061 */ 3062 unsigned id = 0x1000000 | (d->id << 16) | d->lun; 3063 if (d->lun >= 256) { 3064 /* Use the LUN "flat space addressing method" */ 3065 id |= 0x4000; 3066 } 3067 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3068 (uint64_t)id << 32); 3069 } else if (usb) { 3070 /* 3071 * We use SRP luns of the form 01000000 | (usb-port << 16) | lun 3072 * in the top 32 bits of the 64-bit LUN 3073 */ 3074 unsigned usb_port = atoi(usb->port->path); 3075 unsigned id = 0x1000000 | (usb_port << 16) | d->lun; 3076 return g_strdup_printf("%s@%"PRIX64, qdev_fw_name(dev), 3077 (uint64_t)id << 32); 3078 } 3079 } 3080 3081 /* 3082 * SLOF probes the USB devices, and if it recognizes that the device is a 3083 * storage device, it changes its name to "storage" instead of "usb-host", 3084 * and additionally adds a child node for the SCSI LUN, so the correct 3085 * boot path in SLOF is something like .../storage@1/disk@xxx" instead. 3086 */ 3087 if (strcmp("usb-host", qdev_fw_name(dev)) == 0) { 3088 USBDevice *usbdev = CAST(USBDevice, dev, TYPE_USB_DEVICE); 3089 if (usb_host_dev_is_scsi_storage(usbdev)) { 3090 return g_strdup_printf("storage@%s/disk", usbdev->port->path); 3091 } 3092 } 3093 3094 if (phb) { 3095 /* Replace "pci" with "pci@800000020000000" */ 3096 return g_strdup_printf("pci@%"PRIX64, phb->buid); 3097 } 3098 3099 if (vsc) { 3100 /* Same logic as virtio above */ 3101 unsigned id = 0x1000000 | (vsc->target << 16) | vsc->lun; 3102 return g_strdup_printf("disk@%"PRIX64, (uint64_t)id << 32); 3103 } 3104 3105 if (g_str_equal("pci-bridge", qdev_fw_name(dev))) { 3106 /* SLOF uses "pci" instead of "pci-bridge" for PCI bridges */ 3107 PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE); 3108 return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn)); 3109 } 3110 3111 return NULL; 3112 } 3113 3114 static char *spapr_get_kvm_type(Object *obj, Error **errp) 3115 { 3116 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3117 3118 return g_strdup(spapr->kvm_type); 3119 } 3120 3121 static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp) 3122 { 3123 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3124 3125 g_free(spapr->kvm_type); 3126 spapr->kvm_type = g_strdup(value); 3127 } 3128 3129 static bool spapr_get_modern_hotplug_events(Object *obj, Error **errp) 3130 { 3131 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3132 3133 return spapr->use_hotplug_event_source; 3134 } 3135 3136 static void spapr_set_modern_hotplug_events(Object *obj, bool value, 3137 Error **errp) 3138 { 3139 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3140 3141 spapr->use_hotplug_event_source = value; 3142 } 3143 3144 static bool spapr_get_msix_emulation(Object *obj, Error **errp) 3145 { 3146 return true; 3147 } 3148 3149 static char *spapr_get_resize_hpt(Object *obj, Error **errp) 3150 { 3151 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3152 3153 switch (spapr->resize_hpt) { 3154 case SPAPR_RESIZE_HPT_DEFAULT: 3155 return g_strdup("default"); 3156 case SPAPR_RESIZE_HPT_DISABLED: 3157 return g_strdup("disabled"); 3158 case SPAPR_RESIZE_HPT_ENABLED: 3159 return g_strdup("enabled"); 3160 case SPAPR_RESIZE_HPT_REQUIRED: 3161 return g_strdup("required"); 3162 } 3163 g_assert_not_reached(); 3164 } 3165 3166 static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) 3167 { 3168 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3169 3170 if (strcmp(value, "default") == 0) { 3171 spapr->resize_hpt = SPAPR_RESIZE_HPT_DEFAULT; 3172 } else if (strcmp(value, "disabled") == 0) { 3173 spapr->resize_hpt = SPAPR_RESIZE_HPT_DISABLED; 3174 } else if (strcmp(value, "enabled") == 0) { 3175 spapr->resize_hpt = SPAPR_RESIZE_HPT_ENABLED; 3176 } else if (strcmp(value, "required") == 0) { 3177 spapr->resize_hpt = SPAPR_RESIZE_HPT_REQUIRED; 3178 } else { 3179 error_setg(errp, "Bad value for \"resize-hpt\" property"); 3180 } 3181 } 3182 3183 static char *spapr_get_ic_mode(Object *obj, Error **errp) 3184 { 3185 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3186 3187 if (spapr->irq == &spapr_irq_xics_legacy) { 3188 return g_strdup("legacy"); 3189 } else if (spapr->irq == &spapr_irq_xics) { 3190 return g_strdup("xics"); 3191 } else if (spapr->irq == &spapr_irq_xive) { 3192 return g_strdup("xive"); 3193 } else if (spapr->irq == &spapr_irq_dual) { 3194 return g_strdup("dual"); 3195 } 3196 g_assert_not_reached(); 3197 } 3198 3199 static void spapr_set_ic_mode(Object *obj, const char *value, Error **errp) 3200 { 3201 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3202 3203 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 3204 error_setg(errp, "This machine only uses the legacy XICS backend, don't pass ic-mode"); 3205 return; 3206 } 3207 3208 /* The legacy IRQ backend can not be set */ 3209 if (strcmp(value, "xics") == 0) { 3210 spapr->irq = &spapr_irq_xics; 3211 } else if (strcmp(value, "xive") == 0) { 3212 spapr->irq = &spapr_irq_xive; 3213 } else if (strcmp(value, "dual") == 0) { 3214 spapr->irq = &spapr_irq_dual; 3215 } else { 3216 error_setg(errp, "Bad value for \"ic-mode\" property"); 3217 } 3218 } 3219 3220 static char *spapr_get_host_model(Object *obj, Error **errp) 3221 { 3222 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3223 3224 return g_strdup(spapr->host_model); 3225 } 3226 3227 static void spapr_set_host_model(Object *obj, const char *value, Error **errp) 3228 { 3229 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3230 3231 g_free(spapr->host_model); 3232 spapr->host_model = g_strdup(value); 3233 } 3234 3235 static char *spapr_get_host_serial(Object *obj, Error **errp) 3236 { 3237 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3238 3239 return g_strdup(spapr->host_serial); 3240 } 3241 3242 static void spapr_set_host_serial(Object *obj, const char *value, Error **errp) 3243 { 3244 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3245 3246 g_free(spapr->host_serial); 3247 spapr->host_serial = g_strdup(value); 3248 } 3249 3250 static void spapr_instance_init(Object *obj) 3251 { 3252 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3253 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3254 3255 spapr->htab_fd = -1; 3256 spapr->use_hotplug_event_source = true; 3257 object_property_add_str(obj, "kvm-type", 3258 spapr_get_kvm_type, spapr_set_kvm_type); 3259 object_property_set_description(obj, "kvm-type", 3260 "Specifies the KVM virtualization mode (HV, PR)"); 3261 object_property_add_bool(obj, "modern-hotplug-events", 3262 spapr_get_modern_hotplug_events, 3263 spapr_set_modern_hotplug_events); 3264 object_property_set_description(obj, "modern-hotplug-events", 3265 "Use dedicated hotplug event mechanism in" 3266 " place of standard EPOW events when possible" 3267 " (required for memory hot-unplug support)"); 3268 ppc_compat_add_property(obj, "max-cpu-compat", &spapr->max_compat_pvr, 3269 "Maximum permitted CPU compatibility mode"); 3270 3271 object_property_add_str(obj, "resize-hpt", 3272 spapr_get_resize_hpt, spapr_set_resize_hpt); 3273 object_property_set_description(obj, "resize-hpt", 3274 "Resizing of the Hash Page Table (enabled, disabled, required)"); 3275 object_property_add_uint32_ptr(obj, "vsmt", 3276 &spapr->vsmt, OBJ_PROP_FLAG_READWRITE); 3277 object_property_set_description(obj, "vsmt", 3278 "Virtual SMT: KVM behaves as if this were" 3279 " the host's SMT mode"); 3280 3281 object_property_add_bool(obj, "vfio-no-msix-emulation", 3282 spapr_get_msix_emulation, NULL); 3283 3284 object_property_add_uint64_ptr(obj, "kernel-addr", 3285 &spapr->kernel_addr, OBJ_PROP_FLAG_READWRITE); 3286 object_property_set_description(obj, "kernel-addr", 3287 stringify(KERNEL_LOAD_ADDR) 3288 " for -kernel is the default"); 3289 spapr->kernel_addr = KERNEL_LOAD_ADDR; 3290 /* The machine class defines the default interrupt controller mode */ 3291 spapr->irq = smc->irq; 3292 object_property_add_str(obj, "ic-mode", spapr_get_ic_mode, 3293 spapr_set_ic_mode); 3294 object_property_set_description(obj, "ic-mode", 3295 "Specifies the interrupt controller mode (xics, xive, dual)"); 3296 3297 object_property_add_str(obj, "host-model", 3298 spapr_get_host_model, spapr_set_host_model); 3299 object_property_set_description(obj, "host-model", 3300 "Host model to advertise in guest device tree"); 3301 object_property_add_str(obj, "host-serial", 3302 spapr_get_host_serial, spapr_set_host_serial); 3303 object_property_set_description(obj, "host-serial", 3304 "Host serial number to advertise in guest device tree"); 3305 } 3306 3307 static void spapr_machine_finalizefn(Object *obj) 3308 { 3309 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 3310 3311 g_free(spapr->kvm_type); 3312 } 3313 3314 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg) 3315 { 3316 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 3317 PowerPCCPU *cpu = POWERPC_CPU(cs); 3318 CPUPPCState *env = &cpu->env; 3319 3320 cpu_synchronize_state(cs); 3321 /* If FWNMI is inactive, addr will be -1, which will deliver to 0x100 */ 3322 if (spapr->fwnmi_system_reset_addr != -1) { 3323 uint64_t rtas_addr, addr; 3324 3325 /* get rtas addr from fdt */ 3326 rtas_addr = spapr_get_rtas_addr(); 3327 if (!rtas_addr) { 3328 qemu_system_guest_panicked(NULL); 3329 return; 3330 } 3331 3332 addr = rtas_addr + RTAS_ERROR_LOG_MAX + cs->cpu_index * sizeof(uint64_t)*2; 3333 stq_be_phys(&address_space_memory, addr, env->gpr[3]); 3334 stq_be_phys(&address_space_memory, addr + sizeof(uint64_t), 0); 3335 env->gpr[3] = addr; 3336 } 3337 ppc_cpu_do_system_reset(cs); 3338 if (spapr->fwnmi_system_reset_addr != -1) { 3339 env->nip = spapr->fwnmi_system_reset_addr; 3340 } 3341 } 3342 3343 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp) 3344 { 3345 CPUState *cs; 3346 3347 CPU_FOREACH(cs) { 3348 async_run_on_cpu(cs, spapr_do_system_reset_on_cpu, RUN_ON_CPU_NULL); 3349 } 3350 } 3351 3352 int spapr_lmb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3353 void *fdt, int *fdt_start_offset, Error **errp) 3354 { 3355 uint64_t addr; 3356 uint32_t node; 3357 3358 addr = spapr_drc_index(drc) * SPAPR_MEMORY_BLOCK_SIZE; 3359 node = object_property_get_uint(OBJECT(drc->dev), PC_DIMM_NODE_PROP, 3360 &error_abort); 3361 *fdt_start_offset = spapr_dt_memory_node(spapr, fdt, node, addr, 3362 SPAPR_MEMORY_BLOCK_SIZE); 3363 return 0; 3364 } 3365 3366 static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, 3367 bool dedicated_hp_event_source, Error **errp) 3368 { 3369 SpaprDrc *drc; 3370 uint32_t nr_lmbs = size/SPAPR_MEMORY_BLOCK_SIZE; 3371 int i; 3372 uint64_t addr = addr_start; 3373 bool hotplugged = spapr_drc_hotplugged(dev); 3374 3375 for (i = 0; i < nr_lmbs; i++) { 3376 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3377 addr / SPAPR_MEMORY_BLOCK_SIZE); 3378 g_assert(drc); 3379 3380 if (!spapr_drc_attach(drc, dev, errp)) { 3381 while (addr > addr_start) { 3382 addr -= SPAPR_MEMORY_BLOCK_SIZE; 3383 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3384 addr / SPAPR_MEMORY_BLOCK_SIZE); 3385 spapr_drc_detach(drc); 3386 } 3387 return; 3388 } 3389 if (!hotplugged) { 3390 spapr_drc_reset(drc); 3391 } 3392 addr += SPAPR_MEMORY_BLOCK_SIZE; 3393 } 3394 /* send hotplug notification to the 3395 * guest only in case of hotplugged memory 3396 */ 3397 if (hotplugged) { 3398 if (dedicated_hp_event_source) { 3399 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3400 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3401 spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3402 nr_lmbs, 3403 spapr_drc_index(drc)); 3404 } else { 3405 spapr_hotplug_req_add_by_count(SPAPR_DR_CONNECTOR_TYPE_LMB, 3406 nr_lmbs); 3407 } 3408 } 3409 } 3410 3411 static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3412 Error **errp) 3413 { 3414 Error *local_err = NULL; 3415 SpaprMachineState *ms = SPAPR_MACHINE(hotplug_dev); 3416 PCDIMMDevice *dimm = PC_DIMM(dev); 3417 uint64_t size, addr, slot; 3418 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3419 3420 size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort); 3421 3422 pc_dimm_plug(dimm, MACHINE(ms), &local_err); 3423 if (local_err) { 3424 goto out; 3425 } 3426 3427 if (!is_nvdimm) { 3428 addr = object_property_get_uint(OBJECT(dimm), 3429 PC_DIMM_ADDR_PROP, &local_err); 3430 if (local_err) { 3431 goto out_unplug; 3432 } 3433 spapr_add_lmbs(dev, addr, size, 3434 spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), 3435 &local_err); 3436 } else { 3437 slot = object_property_get_uint(OBJECT(dimm), 3438 PC_DIMM_SLOT_PROP, &local_err); 3439 if (local_err) { 3440 goto out_unplug; 3441 } 3442 spapr_add_nvdimm(dev, slot, &local_err); 3443 } 3444 3445 if (local_err) { 3446 goto out_unplug; 3447 } 3448 3449 return; 3450 3451 out_unplug: 3452 pc_dimm_unplug(dimm, MACHINE(ms)); 3453 out: 3454 error_propagate(errp, local_err); 3455 } 3456 3457 static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3458 Error **errp) 3459 { 3460 const SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(hotplug_dev); 3461 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3462 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); 3463 PCDIMMDevice *dimm = PC_DIMM(dev); 3464 Error *local_err = NULL; 3465 uint64_t size; 3466 Object *memdev; 3467 hwaddr pagesize; 3468 3469 if (!smc->dr_lmb_enabled) { 3470 error_setg(errp, "Memory hotplug not supported for this machine"); 3471 return; 3472 } 3473 3474 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &local_err); 3475 if (local_err) { 3476 error_propagate(errp, local_err); 3477 return; 3478 } 3479 3480 if (is_nvdimm) { 3481 if (!spapr_nvdimm_validate(hotplug_dev, NVDIMM(dev), size, errp)) { 3482 return; 3483 } 3484 } else if (size % SPAPR_MEMORY_BLOCK_SIZE) { 3485 error_setg(errp, "Hotplugged memory size must be a multiple of " 3486 "%" PRIu64 " MB", SPAPR_MEMORY_BLOCK_SIZE / MiB); 3487 return; 3488 } 3489 3490 memdev = object_property_get_link(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, 3491 &error_abort); 3492 pagesize = host_memory_backend_pagesize(MEMORY_BACKEND(memdev)); 3493 if (!spapr_check_pagesize(spapr, pagesize, errp)) { 3494 return; 3495 } 3496 3497 pc_dimm_pre_plug(dimm, MACHINE(hotplug_dev), NULL, errp); 3498 } 3499 3500 struct SpaprDimmState { 3501 PCDIMMDevice *dimm; 3502 uint32_t nr_lmbs; 3503 QTAILQ_ENTRY(SpaprDimmState) next; 3504 }; 3505 3506 static SpaprDimmState *spapr_pending_dimm_unplugs_find(SpaprMachineState *s, 3507 PCDIMMDevice *dimm) 3508 { 3509 SpaprDimmState *dimm_state = NULL; 3510 3511 QTAILQ_FOREACH(dimm_state, &s->pending_dimm_unplugs, next) { 3512 if (dimm_state->dimm == dimm) { 3513 break; 3514 } 3515 } 3516 return dimm_state; 3517 } 3518 3519 static SpaprDimmState *spapr_pending_dimm_unplugs_add(SpaprMachineState *spapr, 3520 uint32_t nr_lmbs, 3521 PCDIMMDevice *dimm) 3522 { 3523 SpaprDimmState *ds = NULL; 3524 3525 /* 3526 * If this request is for a DIMM whose removal had failed earlier 3527 * (due to guest's refusal to remove the LMBs), we would have this 3528 * dimm already in the pending_dimm_unplugs list. In that 3529 * case don't add again. 3530 */ 3531 ds = spapr_pending_dimm_unplugs_find(spapr, dimm); 3532 if (!ds) { 3533 ds = g_malloc0(sizeof(SpaprDimmState)); 3534 ds->nr_lmbs = nr_lmbs; 3535 ds->dimm = dimm; 3536 QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next); 3537 } 3538 return ds; 3539 } 3540 3541 static void spapr_pending_dimm_unplugs_remove(SpaprMachineState *spapr, 3542 SpaprDimmState *dimm_state) 3543 { 3544 QTAILQ_REMOVE(&spapr->pending_dimm_unplugs, dimm_state, next); 3545 g_free(dimm_state); 3546 } 3547 3548 static SpaprDimmState *spapr_recover_pending_dimm_state(SpaprMachineState *ms, 3549 PCDIMMDevice *dimm) 3550 { 3551 SpaprDrc *drc; 3552 uint64_t size = memory_device_get_region_size(MEMORY_DEVICE(dimm), 3553 &error_abort); 3554 uint32_t nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3555 uint32_t avail_lmbs = 0; 3556 uint64_t addr_start, addr; 3557 int i; 3558 3559 addr_start = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3560 &error_abort); 3561 3562 addr = addr_start; 3563 for (i = 0; i < nr_lmbs; i++) { 3564 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3565 addr / SPAPR_MEMORY_BLOCK_SIZE); 3566 g_assert(drc); 3567 if (drc->dev) { 3568 avail_lmbs++; 3569 } 3570 addr += SPAPR_MEMORY_BLOCK_SIZE; 3571 } 3572 3573 return spapr_pending_dimm_unplugs_add(ms, avail_lmbs, dimm); 3574 } 3575 3576 /* Callback to be called during DRC release. */ 3577 void spapr_lmb_release(DeviceState *dev) 3578 { 3579 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3580 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_ctrl); 3581 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3582 3583 /* This information will get lost if a migration occurs 3584 * during the unplug process. In this case recover it. */ 3585 if (ds == NULL) { 3586 ds = spapr_recover_pending_dimm_state(spapr, PC_DIMM(dev)); 3587 g_assert(ds); 3588 /* The DRC being examined by the caller at least must be counted */ 3589 g_assert(ds->nr_lmbs); 3590 } 3591 3592 if (--ds->nr_lmbs) { 3593 return; 3594 } 3595 3596 /* 3597 * Now that all the LMBs have been removed by the guest, call the 3598 * unplug handler chain. This can never fail. 3599 */ 3600 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3601 object_unparent(OBJECT(dev)); 3602 } 3603 3604 static void spapr_memory_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3605 { 3606 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3607 SpaprDimmState *ds = spapr_pending_dimm_unplugs_find(spapr, PC_DIMM(dev)); 3608 3609 pc_dimm_unplug(PC_DIMM(dev), MACHINE(hotplug_dev)); 3610 qdev_unrealize(dev); 3611 spapr_pending_dimm_unplugs_remove(spapr, ds); 3612 } 3613 3614 static void spapr_memory_unplug_request(HotplugHandler *hotplug_dev, 3615 DeviceState *dev, Error **errp) 3616 { 3617 SpaprMachineState *spapr = SPAPR_MACHINE(hotplug_dev); 3618 Error *local_err = NULL; 3619 PCDIMMDevice *dimm = PC_DIMM(dev); 3620 uint32_t nr_lmbs; 3621 uint64_t size, addr_start, addr; 3622 int i; 3623 SpaprDrc *drc; 3624 3625 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) { 3626 error_setg(errp, "nvdimm device hot unplug is not supported yet."); 3627 return; 3628 } 3629 3630 size = memory_device_get_region_size(MEMORY_DEVICE(dimm), &error_abort); 3631 nr_lmbs = size / SPAPR_MEMORY_BLOCK_SIZE; 3632 3633 addr_start = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, 3634 &local_err); 3635 if (local_err) { 3636 error_propagate(errp, local_err); 3637 return; 3638 } 3639 3640 /* 3641 * An existing pending dimm state for this DIMM means that there is an 3642 * unplug operation in progress, waiting for the spapr_lmb_release 3643 * callback to complete the job (BQL can't cover that far). In this case, 3644 * bail out to avoid detaching DRCs that were already released. 3645 */ 3646 if (spapr_pending_dimm_unplugs_find(spapr, dimm)) { 3647 error_setg(errp, "Memory unplug already in progress for device %s", 3648 dev->id); 3649 return; 3650 } 3651 3652 spapr_pending_dimm_unplugs_add(spapr, nr_lmbs, dimm); 3653 3654 addr = addr_start; 3655 for (i = 0; i < nr_lmbs; i++) { 3656 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3657 addr / SPAPR_MEMORY_BLOCK_SIZE); 3658 g_assert(drc); 3659 3660 spapr_drc_detach(drc); 3661 addr += SPAPR_MEMORY_BLOCK_SIZE; 3662 } 3663 3664 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB, 3665 addr_start / SPAPR_MEMORY_BLOCK_SIZE); 3666 spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB, 3667 nr_lmbs, spapr_drc_index(drc)); 3668 } 3669 3670 /* Callback to be called during DRC release. */ 3671 void spapr_core_release(DeviceState *dev) 3672 { 3673 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3674 3675 /* Call the unplug handler chain. This can never fail. */ 3676 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3677 object_unparent(OBJECT(dev)); 3678 } 3679 3680 static void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3681 { 3682 MachineState *ms = MACHINE(hotplug_dev); 3683 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(ms); 3684 CPUCore *cc = CPU_CORE(dev); 3685 CPUArchId *core_slot = spapr_find_cpu_slot(ms, cc->core_id, NULL); 3686 3687 if (smc->pre_2_10_has_unused_icps) { 3688 SpaprCpuCore *sc = SPAPR_CPU_CORE(OBJECT(dev)); 3689 int i; 3690 3691 for (i = 0; i < cc->nr_threads; i++) { 3692 CPUState *cs = CPU(sc->threads[i]); 3693 3694 pre_2_10_vmstate_register_dummy_icp(cs->cpu_index); 3695 } 3696 } 3697 3698 assert(core_slot); 3699 core_slot->cpu = NULL; 3700 qdev_unrealize(dev); 3701 } 3702 3703 static 3704 void spapr_core_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, 3705 Error **errp) 3706 { 3707 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3708 int index; 3709 SpaprDrc *drc; 3710 CPUCore *cc = CPU_CORE(dev); 3711 3712 if (!spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index)) { 3713 error_setg(errp, "Unable to find CPU core with core-id: %d", 3714 cc->core_id); 3715 return; 3716 } 3717 if (index == 0) { 3718 error_setg(errp, "Boot CPU core may not be unplugged"); 3719 return; 3720 } 3721 3722 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3723 spapr_vcpu_id(spapr, cc->core_id)); 3724 g_assert(drc); 3725 3726 if (!spapr_drc_unplug_requested(drc)) { 3727 spapr_drc_detach(drc); 3728 spapr_hotplug_req_remove_by_index(drc); 3729 } 3730 } 3731 3732 int spapr_core_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3733 void *fdt, int *fdt_start_offset, Error **errp) 3734 { 3735 SpaprCpuCore *core = SPAPR_CPU_CORE(drc->dev); 3736 CPUState *cs = CPU(core->threads[0]); 3737 PowerPCCPU *cpu = POWERPC_CPU(cs); 3738 DeviceClass *dc = DEVICE_GET_CLASS(cs); 3739 int id = spapr_get_vcpu_id(cpu); 3740 char *nodename; 3741 int offset; 3742 3743 nodename = g_strdup_printf("%s@%x", dc->fw_name, id); 3744 offset = fdt_add_subnode(fdt, 0, nodename); 3745 g_free(nodename); 3746 3747 spapr_dt_cpu(cs, fdt, offset, spapr); 3748 3749 *fdt_start_offset = offset; 3750 return 0; 3751 } 3752 3753 static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3754 Error **errp) 3755 { 3756 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3757 MachineClass *mc = MACHINE_GET_CLASS(spapr); 3758 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 3759 SpaprCpuCore *core = SPAPR_CPU_CORE(OBJECT(dev)); 3760 CPUCore *cc = CPU_CORE(dev); 3761 CPUState *cs; 3762 SpaprDrc *drc; 3763 CPUArchId *core_slot; 3764 int index; 3765 bool hotplugged = spapr_drc_hotplugged(dev); 3766 int i; 3767 3768 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3769 if (!core_slot) { 3770 error_setg(errp, "Unable to find CPU core with core-id: %d", 3771 cc->core_id); 3772 return; 3773 } 3774 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, 3775 spapr_vcpu_id(spapr, cc->core_id)); 3776 3777 g_assert(drc || !mc->has_hotpluggable_cpus); 3778 3779 if (drc) { 3780 if (!spapr_drc_attach(drc, dev, errp)) { 3781 return; 3782 } 3783 3784 if (hotplugged) { 3785 /* 3786 * Send hotplug notification interrupt to the guest only 3787 * in case of hotplugged CPUs. 3788 */ 3789 spapr_hotplug_req_add_by_index(drc); 3790 } else { 3791 spapr_drc_reset(drc); 3792 } 3793 } 3794 3795 core_slot->cpu = OBJECT(dev); 3796 3797 if (smc->pre_2_10_has_unused_icps) { 3798 for (i = 0; i < cc->nr_threads; i++) { 3799 cs = CPU(core->threads[i]); 3800 pre_2_10_vmstate_unregister_dummy_icp(cs->cpu_index); 3801 } 3802 } 3803 3804 /* 3805 * Set compatibility mode to match the boot CPU, which was either set 3806 * by the machine reset code or by CAS. 3807 */ 3808 if (hotplugged) { 3809 for (i = 0; i < cc->nr_threads; i++) { 3810 if (ppc_set_compat(core->threads[i], 3811 POWERPC_CPU(first_cpu)->compat_pvr, 3812 errp) < 0) { 3813 return; 3814 } 3815 } 3816 } 3817 } 3818 3819 static void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3820 Error **errp) 3821 { 3822 MachineState *machine = MACHINE(OBJECT(hotplug_dev)); 3823 MachineClass *mc = MACHINE_GET_CLASS(hotplug_dev); 3824 CPUCore *cc = CPU_CORE(dev); 3825 const char *base_core_type = spapr_get_cpu_core_type(machine->cpu_type); 3826 const char *type = object_get_typename(OBJECT(dev)); 3827 CPUArchId *core_slot; 3828 int index; 3829 unsigned int smp_threads = machine->smp.threads; 3830 3831 if (dev->hotplugged && !mc->has_hotpluggable_cpus) { 3832 error_setg(errp, "CPU hotplug not supported for this machine"); 3833 return; 3834 } 3835 3836 if (strcmp(base_core_type, type)) { 3837 error_setg(errp, "CPU core type should be %s", base_core_type); 3838 return; 3839 } 3840 3841 if (cc->core_id % smp_threads) { 3842 error_setg(errp, "invalid core id %d", cc->core_id); 3843 return; 3844 } 3845 3846 /* 3847 * In general we should have homogeneous threads-per-core, but old 3848 * (pre hotplug support) machine types allow the last core to have 3849 * reduced threads as a compatibility hack for when we allowed 3850 * total vcpus not a multiple of threads-per-core. 3851 */ 3852 if (mc->has_hotpluggable_cpus && (cc->nr_threads != smp_threads)) { 3853 error_setg(errp, "invalid nr-threads %d, must be %d", cc->nr_threads, 3854 smp_threads); 3855 return; 3856 } 3857 3858 core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); 3859 if (!core_slot) { 3860 error_setg(errp, "core id %d out of range", cc->core_id); 3861 return; 3862 } 3863 3864 if (core_slot->cpu) { 3865 error_setg(errp, "core %d already populated", cc->core_id); 3866 return; 3867 } 3868 3869 numa_cpu_pre_plug(core_slot, dev, errp); 3870 } 3871 3872 int spapr_phb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 3873 void *fdt, int *fdt_start_offset, Error **errp) 3874 { 3875 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(drc->dev); 3876 int intc_phandle; 3877 3878 intc_phandle = spapr_irq_get_phandle(spapr, spapr->fdt_blob, errp); 3879 if (intc_phandle <= 0) { 3880 return -1; 3881 } 3882 3883 if (spapr_dt_phb(spapr, sphb, intc_phandle, fdt, fdt_start_offset)) { 3884 error_setg(errp, "unable to create FDT node for PHB %d", sphb->index); 3885 return -1; 3886 } 3887 3888 /* generally SLOF creates these, for hotplug it's up to QEMU */ 3889 _FDT(fdt_setprop_string(fdt, *fdt_start_offset, "name", "pci")); 3890 3891 return 0; 3892 } 3893 3894 static void spapr_phb_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3895 Error **errp) 3896 { 3897 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3898 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 3899 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3900 const unsigned windows_supported = spapr_phb_windows_supported(sphb); 3901 3902 if (dev->hotplugged && !smc->dr_phb_enabled) { 3903 error_setg(errp, "PHB hotplug not supported for this machine"); 3904 return; 3905 } 3906 3907 if (sphb->index == (uint32_t)-1) { 3908 error_setg(errp, "\"index\" for PAPR PHB is mandatory"); 3909 return; 3910 } 3911 3912 /* 3913 * This will check that sphb->index doesn't exceed the maximum number of 3914 * PHBs for the current machine type. 3915 */ 3916 smc->phb_placement(spapr, sphb->index, 3917 &sphb->buid, &sphb->io_win_addr, 3918 &sphb->mem_win_addr, &sphb->mem64_win_addr, 3919 windows_supported, sphb->dma_liobn, 3920 &sphb->nv2_gpa_win_addr, &sphb->nv2_atsd_win_addr, 3921 errp); 3922 } 3923 3924 static void spapr_phb_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3925 Error **errp) 3926 { 3927 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3928 SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); 3929 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 3930 SpaprDrc *drc; 3931 bool hotplugged = spapr_drc_hotplugged(dev); 3932 3933 if (!smc->dr_phb_enabled) { 3934 return; 3935 } 3936 3937 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 3938 /* hotplug hooks should check it's enabled before getting this far */ 3939 assert(drc); 3940 3941 if (!spapr_drc_attach(drc, dev, errp)) { 3942 return; 3943 } 3944 3945 if (hotplugged) { 3946 spapr_hotplug_req_add_by_index(drc); 3947 } else { 3948 spapr_drc_reset(drc); 3949 } 3950 } 3951 3952 void spapr_phb_release(DeviceState *dev) 3953 { 3954 HotplugHandler *hotplug_ctrl = qdev_get_hotplug_handler(dev); 3955 3956 hotplug_handler_unplug(hotplug_ctrl, dev, &error_abort); 3957 object_unparent(OBJECT(dev)); 3958 } 3959 3960 static void spapr_phb_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3961 { 3962 qdev_unrealize(dev); 3963 } 3964 3965 static void spapr_phb_unplug_request(HotplugHandler *hotplug_dev, 3966 DeviceState *dev, Error **errp) 3967 { 3968 SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(dev); 3969 SpaprDrc *drc; 3970 3971 drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PHB, sphb->index); 3972 assert(drc); 3973 3974 if (!spapr_drc_unplug_requested(drc)) { 3975 spapr_drc_detach(drc); 3976 spapr_hotplug_req_remove_by_index(drc); 3977 } 3978 } 3979 3980 static void spapr_tpm_proxy_plug(HotplugHandler *hotplug_dev, DeviceState *dev, 3981 Error **errp) 3982 { 3983 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3984 SpaprTpmProxy *tpm_proxy = SPAPR_TPM_PROXY(dev); 3985 3986 if (spapr->tpm_proxy != NULL) { 3987 error_setg(errp, "Only one TPM proxy can be specified for this machine"); 3988 return; 3989 } 3990 3991 spapr->tpm_proxy = tpm_proxy; 3992 } 3993 3994 static void spapr_tpm_proxy_unplug(HotplugHandler *hotplug_dev, DeviceState *dev) 3995 { 3996 SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); 3997 3998 qdev_unrealize(dev); 3999 object_unparent(OBJECT(dev)); 4000 spapr->tpm_proxy = NULL; 4001 } 4002 4003 static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, 4004 DeviceState *dev, Error **errp) 4005 { 4006 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4007 spapr_memory_plug(hotplug_dev, dev, errp); 4008 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4009 spapr_core_plug(hotplug_dev, dev, errp); 4010 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4011 spapr_phb_plug(hotplug_dev, dev, errp); 4012 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4013 spapr_tpm_proxy_plug(hotplug_dev, dev, errp); 4014 } 4015 } 4016 4017 static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, 4018 DeviceState *dev, Error **errp) 4019 { 4020 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4021 spapr_memory_unplug(hotplug_dev, dev); 4022 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4023 spapr_core_unplug(hotplug_dev, dev); 4024 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4025 spapr_phb_unplug(hotplug_dev, dev); 4026 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4027 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4028 } 4029 } 4030 4031 static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, 4032 DeviceState *dev, Error **errp) 4033 { 4034 SpaprMachineState *sms = SPAPR_MACHINE(OBJECT(hotplug_dev)); 4035 MachineClass *mc = MACHINE_GET_CLASS(sms); 4036 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4037 4038 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4039 if (spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { 4040 spapr_memory_unplug_request(hotplug_dev, dev, errp); 4041 } else { 4042 /* NOTE: this means there is a window after guest reset, prior to 4043 * CAS negotiation, where unplug requests will fail due to the 4044 * capability not being detected yet. This is a bit different than 4045 * the case with PCI unplug, where the events will be queued and 4046 * eventually handled by the guest after boot 4047 */ 4048 error_setg(errp, "Memory hot unplug not supported for this guest"); 4049 } 4050 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4051 if (!mc->has_hotpluggable_cpus) { 4052 error_setg(errp, "CPU hot unplug not supported on this machine"); 4053 return; 4054 } 4055 spapr_core_unplug_request(hotplug_dev, dev, errp); 4056 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4057 if (!smc->dr_phb_enabled) { 4058 error_setg(errp, "PHB hot unplug not supported on this machine"); 4059 return; 4060 } 4061 spapr_phb_unplug_request(hotplug_dev, dev, errp); 4062 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4063 spapr_tpm_proxy_unplug(hotplug_dev, dev); 4064 } 4065 } 4066 4067 static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev, 4068 DeviceState *dev, Error **errp) 4069 { 4070 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { 4071 spapr_memory_pre_plug(hotplug_dev, dev, errp); 4072 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { 4073 spapr_core_pre_plug(hotplug_dev, dev, errp); 4074 } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { 4075 spapr_phb_pre_plug(hotplug_dev, dev, errp); 4076 } 4077 } 4078 4079 static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine, 4080 DeviceState *dev) 4081 { 4082 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || 4083 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE) || 4084 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE) || 4085 object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { 4086 return HOTPLUG_HANDLER(machine); 4087 } 4088 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { 4089 PCIDevice *pcidev = PCI_DEVICE(dev); 4090 PCIBus *root = pci_device_root_bus(pcidev); 4091 SpaprPhbState *phb = 4092 (SpaprPhbState *)object_dynamic_cast(OBJECT(BUS(root)->parent), 4093 TYPE_SPAPR_PCI_HOST_BRIDGE); 4094 4095 if (phb) { 4096 return HOTPLUG_HANDLER(phb); 4097 } 4098 } 4099 return NULL; 4100 } 4101 4102 static CpuInstanceProperties 4103 spapr_cpu_index_to_props(MachineState *machine, unsigned cpu_index) 4104 { 4105 CPUArchId *core_slot; 4106 MachineClass *mc = MACHINE_GET_CLASS(machine); 4107 4108 /* make sure possible_cpu are intialized */ 4109 mc->possible_cpu_arch_ids(machine); 4110 /* get CPU core slot containing thread that matches cpu_index */ 4111 core_slot = spapr_find_cpu_slot(machine, cpu_index, NULL); 4112 assert(core_slot); 4113 return core_slot->props; 4114 } 4115 4116 static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx) 4117 { 4118 return idx / ms->smp.cores % ms->numa_state->num_nodes; 4119 } 4120 4121 static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState *machine) 4122 { 4123 int i; 4124 unsigned int smp_threads = machine->smp.threads; 4125 unsigned int smp_cpus = machine->smp.cpus; 4126 const char *core_type; 4127 int spapr_max_cores = machine->smp.max_cpus / smp_threads; 4128 MachineClass *mc = MACHINE_GET_CLASS(machine); 4129 4130 if (!mc->has_hotpluggable_cpus) { 4131 spapr_max_cores = QEMU_ALIGN_UP(smp_cpus, smp_threads) / smp_threads; 4132 } 4133 if (machine->possible_cpus) { 4134 assert(machine->possible_cpus->len == spapr_max_cores); 4135 return machine->possible_cpus; 4136 } 4137 4138 core_type = spapr_get_cpu_core_type(machine->cpu_type); 4139 if (!core_type) { 4140 error_report("Unable to find sPAPR CPU Core definition"); 4141 exit(1); 4142 } 4143 4144 machine->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + 4145 sizeof(CPUArchId) * spapr_max_cores); 4146 machine->possible_cpus->len = spapr_max_cores; 4147 for (i = 0; i < machine->possible_cpus->len; i++) { 4148 int core_id = i * smp_threads; 4149 4150 machine->possible_cpus->cpus[i].type = core_type; 4151 machine->possible_cpus->cpus[i].vcpus_count = smp_threads; 4152 machine->possible_cpus->cpus[i].arch_id = core_id; 4153 machine->possible_cpus->cpus[i].props.has_core_id = true; 4154 machine->possible_cpus->cpus[i].props.core_id = core_id; 4155 } 4156 return machine->possible_cpus; 4157 } 4158 4159 static void spapr_phb_placement(SpaprMachineState *spapr, uint32_t index, 4160 uint64_t *buid, hwaddr *pio, 4161 hwaddr *mmio32, hwaddr *mmio64, 4162 unsigned n_dma, uint32_t *liobns, 4163 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4164 { 4165 /* 4166 * New-style PHB window placement. 4167 * 4168 * Goals: Gives large (1TiB), naturally aligned 64-bit MMIO window 4169 * for each PHB, in addition to 2GiB 32-bit MMIO and 64kiB PIO 4170 * windows. 4171 * 4172 * Some guest kernels can't work with MMIO windows above 1<<46 4173 * (64TiB), so we place up to 31 PHBs in the area 32TiB..64TiB 4174 * 4175 * 32TiB..(33TiB+1984kiB) contains the 64kiB PIO windows for each 4176 * PHB stacked together. (32TiB+2GiB)..(32TiB+64GiB) contains the 4177 * 2GiB 32-bit MMIO windows for each PHB. Then 33..64TiB has the 4178 * 1TiB 64-bit MMIO windows for each PHB. 4179 */ 4180 const uint64_t base_buid = 0x800000020000000ULL; 4181 int i; 4182 4183 /* Sanity check natural alignments */ 4184 QEMU_BUILD_BUG_ON((SPAPR_PCI_BASE % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4185 QEMU_BUILD_BUG_ON((SPAPR_PCI_LIMIT % SPAPR_PCI_MEM64_WIN_SIZE) != 0); 4186 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM64_WIN_SIZE % SPAPR_PCI_MEM32_WIN_SIZE) != 0); 4187 QEMU_BUILD_BUG_ON((SPAPR_PCI_MEM32_WIN_SIZE % SPAPR_PCI_IO_WIN_SIZE) != 0); 4188 /* Sanity check bounds */ 4189 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_IO_WIN_SIZE) > 4190 SPAPR_PCI_MEM32_WIN_SIZE); 4191 QEMU_BUILD_BUG_ON((SPAPR_MAX_PHBS * SPAPR_PCI_MEM32_WIN_SIZE) > 4192 SPAPR_PCI_MEM64_WIN_SIZE); 4193 4194 if (index >= SPAPR_MAX_PHBS) { 4195 error_setg(errp, "\"index\" for PAPR PHB is too large (max %llu)", 4196 SPAPR_MAX_PHBS - 1); 4197 return; 4198 } 4199 4200 *buid = base_buid + index; 4201 for (i = 0; i < n_dma; ++i) { 4202 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4203 } 4204 4205 *pio = SPAPR_PCI_BASE + index * SPAPR_PCI_IO_WIN_SIZE; 4206 *mmio32 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM32_WIN_SIZE; 4207 *mmio64 = SPAPR_PCI_BASE + (index + 1) * SPAPR_PCI_MEM64_WIN_SIZE; 4208 4209 *nv2gpa = SPAPR_PCI_NV2RAM64_WIN_BASE + index * SPAPR_PCI_NV2RAM64_WIN_SIZE; 4210 *nv2atsd = SPAPR_PCI_NV2ATSD_WIN_BASE + index * SPAPR_PCI_NV2ATSD_WIN_SIZE; 4211 } 4212 4213 static ICSState *spapr_ics_get(XICSFabric *dev, int irq) 4214 { 4215 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4216 4217 return ics_valid_irq(spapr->ics, irq) ? spapr->ics : NULL; 4218 } 4219 4220 static void spapr_ics_resend(XICSFabric *dev) 4221 { 4222 SpaprMachineState *spapr = SPAPR_MACHINE(dev); 4223 4224 ics_resend(spapr->ics); 4225 } 4226 4227 static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) 4228 { 4229 PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); 4230 4231 return cpu ? spapr_cpu_state(cpu)->icp : NULL; 4232 } 4233 4234 static void spapr_pic_print_info(InterruptStatsProvider *obj, 4235 Monitor *mon) 4236 { 4237 SpaprMachineState *spapr = SPAPR_MACHINE(obj); 4238 4239 spapr_irq_print_info(spapr, mon); 4240 monitor_printf(mon, "irqchip: %s\n", 4241 kvm_irqchip_in_kernel() ? "in-kernel" : "emulated"); 4242 } 4243 4244 /* 4245 * This is a XIVE only operation 4246 */ 4247 static int spapr_match_nvt(XiveFabric *xfb, uint8_t format, 4248 uint8_t nvt_blk, uint32_t nvt_idx, 4249 bool cam_ignore, uint8_t priority, 4250 uint32_t logic_serv, XiveTCTXMatch *match) 4251 { 4252 SpaprMachineState *spapr = SPAPR_MACHINE(xfb); 4253 XivePresenter *xptr = XIVE_PRESENTER(spapr->active_intc); 4254 XivePresenterClass *xpc = XIVE_PRESENTER_GET_CLASS(xptr); 4255 int count; 4256 4257 count = xpc->match_nvt(xptr, format, nvt_blk, nvt_idx, cam_ignore, 4258 priority, logic_serv, match); 4259 if (count < 0) { 4260 return count; 4261 } 4262 4263 /* 4264 * When we implement the save and restore of the thread interrupt 4265 * contexts in the enter/exit CPU handlers of the machine and the 4266 * escalations in QEMU, we should be able to handle non dispatched 4267 * vCPUs. 4268 * 4269 * Until this is done, the sPAPR machine should find at least one 4270 * matching context always. 4271 */ 4272 if (count == 0) { 4273 qemu_log_mask(LOG_GUEST_ERROR, "XIVE: NVT %x/%x is not dispatched\n", 4274 nvt_blk, nvt_idx); 4275 } 4276 4277 return count; 4278 } 4279 4280 int spapr_get_vcpu_id(PowerPCCPU *cpu) 4281 { 4282 return cpu->vcpu_id; 4283 } 4284 4285 bool spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp) 4286 { 4287 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 4288 MachineState *ms = MACHINE(spapr); 4289 int vcpu_id; 4290 4291 vcpu_id = spapr_vcpu_id(spapr, cpu_index); 4292 4293 if (kvm_enabled() && !kvm_vcpu_id_is_valid(vcpu_id)) { 4294 error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id); 4295 error_append_hint(errp, "Adjust the number of cpus to %d " 4296 "or try to raise the number of threads per core\n", 4297 vcpu_id * ms->smp.threads / spapr->vsmt); 4298 return false; 4299 } 4300 4301 cpu->vcpu_id = vcpu_id; 4302 return true; 4303 } 4304 4305 PowerPCCPU *spapr_find_cpu(int vcpu_id) 4306 { 4307 CPUState *cs; 4308 4309 CPU_FOREACH(cs) { 4310 PowerPCCPU *cpu = POWERPC_CPU(cs); 4311 4312 if (spapr_get_vcpu_id(cpu) == vcpu_id) { 4313 return cpu; 4314 } 4315 } 4316 4317 return NULL; 4318 } 4319 4320 static void spapr_cpu_exec_enter(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4321 { 4322 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4323 4324 /* These are only called by TCG, KVM maintains dispatch state */ 4325 4326 spapr_cpu->prod = false; 4327 if (spapr_cpu->vpa_addr) { 4328 CPUState *cs = CPU(cpu); 4329 uint32_t dispatch; 4330 4331 dispatch = ldl_be_phys(cs->as, 4332 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4333 dispatch++; 4334 if ((dispatch & 1) != 0) { 4335 qemu_log_mask(LOG_GUEST_ERROR, 4336 "VPA: incorrect dispatch counter value for " 4337 "dispatched partition %u, correcting.\n", dispatch); 4338 dispatch++; 4339 } 4340 stl_be_phys(cs->as, 4341 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4342 } 4343 } 4344 4345 static void spapr_cpu_exec_exit(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) 4346 { 4347 SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); 4348 4349 if (spapr_cpu->vpa_addr) { 4350 CPUState *cs = CPU(cpu); 4351 uint32_t dispatch; 4352 4353 dispatch = ldl_be_phys(cs->as, 4354 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); 4355 dispatch++; 4356 if ((dispatch & 1) != 1) { 4357 qemu_log_mask(LOG_GUEST_ERROR, 4358 "VPA: incorrect dispatch counter value for " 4359 "preempted partition %u, correcting.\n", dispatch); 4360 dispatch++; 4361 } 4362 stl_be_phys(cs->as, 4363 spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); 4364 } 4365 } 4366 4367 static void spapr_machine_class_init(ObjectClass *oc, void *data) 4368 { 4369 MachineClass *mc = MACHINE_CLASS(oc); 4370 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(oc); 4371 FWPathProviderClass *fwc = FW_PATH_PROVIDER_CLASS(oc); 4372 NMIClass *nc = NMI_CLASS(oc); 4373 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 4374 PPCVirtualHypervisorClass *vhc = PPC_VIRTUAL_HYPERVISOR_CLASS(oc); 4375 XICSFabricClass *xic = XICS_FABRIC_CLASS(oc); 4376 InterruptStatsProviderClass *ispc = INTERRUPT_STATS_PROVIDER_CLASS(oc); 4377 XiveFabricClass *xfc = XIVE_FABRIC_CLASS(oc); 4378 4379 mc->desc = "pSeries Logical Partition (PAPR compliant)"; 4380 mc->ignore_boot_device_suffixes = true; 4381 4382 /* 4383 * We set up the default / latest behaviour here. The class_init 4384 * functions for the specific versioned machine types can override 4385 * these details for backwards compatibility 4386 */ 4387 mc->init = spapr_machine_init; 4388 mc->reset = spapr_machine_reset; 4389 mc->block_default_type = IF_SCSI; 4390 mc->max_cpus = 1024; 4391 mc->no_parallel = 1; 4392 mc->default_boot_order = ""; 4393 mc->default_ram_size = 512 * MiB; 4394 mc->default_ram_id = "ppc_spapr.ram"; 4395 mc->default_display = "std"; 4396 mc->kvm_type = spapr_kvm_type; 4397 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE); 4398 mc->pci_allow_0_address = true; 4399 assert(!mc->get_hotplug_handler); 4400 mc->get_hotplug_handler = spapr_get_hotplug_handler; 4401 hc->pre_plug = spapr_machine_device_pre_plug; 4402 hc->plug = spapr_machine_device_plug; 4403 mc->cpu_index_to_instance_props = spapr_cpu_index_to_props; 4404 mc->get_default_cpu_node_id = spapr_get_default_cpu_node_id; 4405 mc->possible_cpu_arch_ids = spapr_possible_cpu_arch_ids; 4406 hc->unplug_request = spapr_machine_device_unplug_request; 4407 hc->unplug = spapr_machine_device_unplug; 4408 4409 smc->dr_lmb_enabled = true; 4410 smc->update_dt_enabled = true; 4411 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power9_v2.0"); 4412 mc->has_hotpluggable_cpus = true; 4413 mc->nvdimm_supported = true; 4414 smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED; 4415 fwc->get_dev_path = spapr_get_fw_dev_path; 4416 nc->nmi_monitor_handler = spapr_nmi; 4417 smc->phb_placement = spapr_phb_placement; 4418 vhc->hypercall = emulate_spapr_hypercall; 4419 vhc->hpt_mask = spapr_hpt_mask; 4420 vhc->map_hptes = spapr_map_hptes; 4421 vhc->unmap_hptes = spapr_unmap_hptes; 4422 vhc->hpte_set_c = spapr_hpte_set_c; 4423 vhc->hpte_set_r = spapr_hpte_set_r; 4424 vhc->get_pate = spapr_get_pate; 4425 vhc->encode_hpt_for_kvm_pr = spapr_encode_hpt_for_kvm_pr; 4426 vhc->cpu_exec_enter = spapr_cpu_exec_enter; 4427 vhc->cpu_exec_exit = spapr_cpu_exec_exit; 4428 xic->ics_get = spapr_ics_get; 4429 xic->ics_resend = spapr_ics_resend; 4430 xic->icp_get = spapr_icp_get; 4431 ispc->print_info = spapr_pic_print_info; 4432 /* Force NUMA node memory size to be a multiple of 4433 * SPAPR_MEMORY_BLOCK_SIZE (256M) since that's the granularity 4434 * in which LMBs are represented and hot-added 4435 */ 4436 mc->numa_mem_align_shift = 28; 4437 mc->auto_enable_numa = true; 4438 4439 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; 4440 smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; 4441 smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; 4442 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4443 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4444 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_WORKAROUND; 4445 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ 4446 smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF; 4447 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_ON; 4448 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_ON; 4449 smc->default_caps.caps[SPAPR_CAP_FWNMI] = SPAPR_CAP_ON; 4450 spapr_caps_add_properties(smc); 4451 smc->irq = &spapr_irq_dual; 4452 smc->dr_phb_enabled = true; 4453 smc->linux_pci_probe = true; 4454 smc->smp_threads_vsmt = true; 4455 smc->nr_xirqs = SPAPR_NR_XIRQS; 4456 xfc->match_nvt = spapr_match_nvt; 4457 } 4458 4459 static const TypeInfo spapr_machine_info = { 4460 .name = TYPE_SPAPR_MACHINE, 4461 .parent = TYPE_MACHINE, 4462 .abstract = true, 4463 .instance_size = sizeof(SpaprMachineState), 4464 .instance_init = spapr_instance_init, 4465 .instance_finalize = spapr_machine_finalizefn, 4466 .class_size = sizeof(SpaprMachineClass), 4467 .class_init = spapr_machine_class_init, 4468 .interfaces = (InterfaceInfo[]) { 4469 { TYPE_FW_PATH_PROVIDER }, 4470 { TYPE_NMI }, 4471 { TYPE_HOTPLUG_HANDLER }, 4472 { TYPE_PPC_VIRTUAL_HYPERVISOR }, 4473 { TYPE_XICS_FABRIC }, 4474 { TYPE_INTERRUPT_STATS_PROVIDER }, 4475 { TYPE_XIVE_FABRIC }, 4476 { } 4477 }, 4478 }; 4479 4480 static void spapr_machine_latest_class_options(MachineClass *mc) 4481 { 4482 mc->alias = "pseries"; 4483 mc->is_default = true; 4484 } 4485 4486 #define DEFINE_SPAPR_MACHINE(suffix, verstr, latest) \ 4487 static void spapr_machine_##suffix##_class_init(ObjectClass *oc, \ 4488 void *data) \ 4489 { \ 4490 MachineClass *mc = MACHINE_CLASS(oc); \ 4491 spapr_machine_##suffix##_class_options(mc); \ 4492 if (latest) { \ 4493 spapr_machine_latest_class_options(mc); \ 4494 } \ 4495 } \ 4496 static const TypeInfo spapr_machine_##suffix##_info = { \ 4497 .name = MACHINE_TYPE_NAME("pseries-" verstr), \ 4498 .parent = TYPE_SPAPR_MACHINE, \ 4499 .class_init = spapr_machine_##suffix##_class_init, \ 4500 }; \ 4501 static void spapr_machine_register_##suffix(void) \ 4502 { \ 4503 type_register(&spapr_machine_##suffix##_info); \ 4504 } \ 4505 type_init(spapr_machine_register_##suffix) 4506 4507 /* 4508 * pseries-5.2 4509 */ 4510 static void spapr_machine_5_2_class_options(MachineClass *mc) 4511 { 4512 /* Defaults for the latest behaviour inherited from the base class */ 4513 } 4514 4515 DEFINE_SPAPR_MACHINE(5_2, "5.2", true); 4516 4517 /* 4518 * pseries-5.1 4519 */ 4520 static void spapr_machine_5_1_class_options(MachineClass *mc) 4521 { 4522 spapr_machine_5_2_class_options(mc); 4523 compat_props_add(mc->compat_props, hw_compat_5_1, hw_compat_5_1_len); 4524 } 4525 4526 DEFINE_SPAPR_MACHINE(5_1, "5.1", false); 4527 4528 /* 4529 * pseries-5.0 4530 */ 4531 static void spapr_machine_5_0_class_options(MachineClass *mc) 4532 { 4533 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4534 static GlobalProperty compat[] = { 4535 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pre-5.1-associativity", "on" }, 4536 }; 4537 4538 spapr_machine_5_1_class_options(mc); 4539 compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len); 4540 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4541 mc->numa_mem_supported = true; 4542 smc->pre_5_1_assoc_refpoints = true; 4543 } 4544 4545 DEFINE_SPAPR_MACHINE(5_0, "5.0", false); 4546 4547 /* 4548 * pseries-4.2 4549 */ 4550 static void spapr_machine_4_2_class_options(MachineClass *mc) 4551 { 4552 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4553 4554 spapr_machine_5_0_class_options(mc); 4555 compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len); 4556 smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_OFF; 4557 smc->default_caps.caps[SPAPR_CAP_FWNMI] = SPAPR_CAP_OFF; 4558 smc->rma_limit = 16 * GiB; 4559 mc->nvdimm_supported = false; 4560 } 4561 4562 DEFINE_SPAPR_MACHINE(4_2, "4.2", false); 4563 4564 /* 4565 * pseries-4.1 4566 */ 4567 static void spapr_machine_4_1_class_options(MachineClass *mc) 4568 { 4569 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4570 static GlobalProperty compat[] = { 4571 /* Only allow 4kiB and 64kiB IOMMU pagesizes */ 4572 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pgsz", "0x11000" }, 4573 }; 4574 4575 spapr_machine_4_2_class_options(mc); 4576 smc->linux_pci_probe = false; 4577 smc->smp_threads_vsmt = false; 4578 compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len); 4579 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4580 } 4581 4582 DEFINE_SPAPR_MACHINE(4_1, "4.1", false); 4583 4584 /* 4585 * pseries-4.0 4586 */ 4587 static void phb_placement_4_0(SpaprMachineState *spapr, uint32_t index, 4588 uint64_t *buid, hwaddr *pio, 4589 hwaddr *mmio32, hwaddr *mmio64, 4590 unsigned n_dma, uint32_t *liobns, 4591 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4592 { 4593 spapr_phb_placement(spapr, index, buid, pio, mmio32, mmio64, n_dma, liobns, 4594 nv2gpa, nv2atsd, errp); 4595 *nv2gpa = 0; 4596 *nv2atsd = 0; 4597 } 4598 4599 static void spapr_machine_4_0_class_options(MachineClass *mc) 4600 { 4601 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4602 4603 spapr_machine_4_1_class_options(mc); 4604 compat_props_add(mc->compat_props, hw_compat_4_0, hw_compat_4_0_len); 4605 smc->phb_placement = phb_placement_4_0; 4606 smc->irq = &spapr_irq_xics; 4607 smc->pre_4_1_migration = true; 4608 } 4609 4610 DEFINE_SPAPR_MACHINE(4_0, "4.0", false); 4611 4612 /* 4613 * pseries-3.1 4614 */ 4615 static void spapr_machine_3_1_class_options(MachineClass *mc) 4616 { 4617 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4618 4619 spapr_machine_4_0_class_options(mc); 4620 compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len); 4621 4622 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); 4623 smc->update_dt_enabled = false; 4624 smc->dr_phb_enabled = false; 4625 smc->broken_host_serial_model = true; 4626 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; 4627 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; 4628 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; 4629 smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_OFF; 4630 } 4631 4632 DEFINE_SPAPR_MACHINE(3_1, "3.1", false); 4633 4634 /* 4635 * pseries-3.0 4636 */ 4637 4638 static void spapr_machine_3_0_class_options(MachineClass *mc) 4639 { 4640 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4641 4642 spapr_machine_3_1_class_options(mc); 4643 compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len); 4644 4645 smc->legacy_irq_allocation = true; 4646 smc->nr_xirqs = 0x400; 4647 smc->irq = &spapr_irq_xics_legacy; 4648 } 4649 4650 DEFINE_SPAPR_MACHINE(3_0, "3.0", false); 4651 4652 /* 4653 * pseries-2.12 4654 */ 4655 static void spapr_machine_2_12_class_options(MachineClass *mc) 4656 { 4657 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4658 static GlobalProperty compat[] = { 4659 { TYPE_POWERPC_CPU, "pre-3.0-migration", "on" }, 4660 { TYPE_SPAPR_CPU_CORE, "pre-3.0-migration", "on" }, 4661 }; 4662 4663 spapr_machine_3_0_class_options(mc); 4664 compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len); 4665 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4666 4667 /* We depend on kvm_enabled() to choose a default value for the 4668 * hpt-max-page-size capability. Of course we can't do it here 4669 * because this is too early and the HW accelerator isn't initialzed 4670 * yet. Postpone this to machine init (see default_caps_with_cpu()). 4671 */ 4672 smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 0; 4673 } 4674 4675 DEFINE_SPAPR_MACHINE(2_12, "2.12", false); 4676 4677 static void spapr_machine_2_12_sxxm_class_options(MachineClass *mc) 4678 { 4679 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4680 4681 spapr_machine_2_12_class_options(mc); 4682 smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; 4683 smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; 4684 smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD; 4685 } 4686 4687 DEFINE_SPAPR_MACHINE(2_12_sxxm, "2.12-sxxm", false); 4688 4689 /* 4690 * pseries-2.11 4691 */ 4692 4693 static void spapr_machine_2_11_class_options(MachineClass *mc) 4694 { 4695 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4696 4697 spapr_machine_2_12_class_options(mc); 4698 smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; 4699 compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len); 4700 } 4701 4702 DEFINE_SPAPR_MACHINE(2_11, "2.11", false); 4703 4704 /* 4705 * pseries-2.10 4706 */ 4707 4708 static void spapr_machine_2_10_class_options(MachineClass *mc) 4709 { 4710 spapr_machine_2_11_class_options(mc); 4711 compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len); 4712 } 4713 4714 DEFINE_SPAPR_MACHINE(2_10, "2.10", false); 4715 4716 /* 4717 * pseries-2.9 4718 */ 4719 4720 static void spapr_machine_2_9_class_options(MachineClass *mc) 4721 { 4722 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4723 static GlobalProperty compat[] = { 4724 { TYPE_POWERPC_CPU, "pre-2.10-migration", "on" }, 4725 }; 4726 4727 spapr_machine_2_10_class_options(mc); 4728 compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len); 4729 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4730 smc->pre_2_10_has_unused_icps = true; 4731 smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED; 4732 } 4733 4734 DEFINE_SPAPR_MACHINE(2_9, "2.9", false); 4735 4736 /* 4737 * pseries-2.8 4738 */ 4739 4740 static void spapr_machine_2_8_class_options(MachineClass *mc) 4741 { 4742 static GlobalProperty compat[] = { 4743 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pcie-extended-configuration-space", "off" }, 4744 }; 4745 4746 spapr_machine_2_9_class_options(mc); 4747 compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len); 4748 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4749 mc->numa_mem_align_shift = 23; 4750 } 4751 4752 DEFINE_SPAPR_MACHINE(2_8, "2.8", false); 4753 4754 /* 4755 * pseries-2.7 4756 */ 4757 4758 static void phb_placement_2_7(SpaprMachineState *spapr, uint32_t index, 4759 uint64_t *buid, hwaddr *pio, 4760 hwaddr *mmio32, hwaddr *mmio64, 4761 unsigned n_dma, uint32_t *liobns, 4762 hwaddr *nv2gpa, hwaddr *nv2atsd, Error **errp) 4763 { 4764 /* Legacy PHB placement for pseries-2.7 and earlier machine types */ 4765 const uint64_t base_buid = 0x800000020000000ULL; 4766 const hwaddr phb_spacing = 0x1000000000ULL; /* 64 GiB */ 4767 const hwaddr mmio_offset = 0xa0000000; /* 2 GiB + 512 MiB */ 4768 const hwaddr pio_offset = 0x80000000; /* 2 GiB */ 4769 const uint32_t max_index = 255; 4770 const hwaddr phb0_alignment = 0x10000000000ULL; /* 1 TiB */ 4771 4772 uint64_t ram_top = MACHINE(spapr)->ram_size; 4773 hwaddr phb0_base, phb_base; 4774 int i; 4775 4776 /* Do we have device memory? */ 4777 if (MACHINE(spapr)->maxram_size > ram_top) { 4778 /* Can't just use maxram_size, because there may be an 4779 * alignment gap between normal and device memory regions 4780 */ 4781 ram_top = MACHINE(spapr)->device_memory->base + 4782 memory_region_size(&MACHINE(spapr)->device_memory->mr); 4783 } 4784 4785 phb0_base = QEMU_ALIGN_UP(ram_top, phb0_alignment); 4786 4787 if (index > max_index) { 4788 error_setg(errp, "\"index\" for PAPR PHB is too large (max %u)", 4789 max_index); 4790 return; 4791 } 4792 4793 *buid = base_buid + index; 4794 for (i = 0; i < n_dma; ++i) { 4795 liobns[i] = SPAPR_PCI_LIOBN(index, i); 4796 } 4797 4798 phb_base = phb0_base + index * phb_spacing; 4799 *pio = phb_base + pio_offset; 4800 *mmio32 = phb_base + mmio_offset; 4801 /* 4802 * We don't set the 64-bit MMIO window, relying on the PHB's 4803 * fallback behaviour of automatically splitting a large "32-bit" 4804 * window into contiguous 32-bit and 64-bit windows 4805 */ 4806 4807 *nv2gpa = 0; 4808 *nv2atsd = 0; 4809 } 4810 4811 static void spapr_machine_2_7_class_options(MachineClass *mc) 4812 { 4813 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4814 static GlobalProperty compat[] = { 4815 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0xf80000000", }, 4816 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem64_win_size", "0", }, 4817 { TYPE_POWERPC_CPU, "pre-2.8-migration", "on", }, 4818 { TYPE_SPAPR_PCI_HOST_BRIDGE, "pre-2.8-migration", "on", }, 4819 }; 4820 4821 spapr_machine_2_8_class_options(mc); 4822 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power7_v2.3"); 4823 mc->default_machine_opts = "modern-hotplug-events=off"; 4824 compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len); 4825 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4826 smc->phb_placement = phb_placement_2_7; 4827 } 4828 4829 DEFINE_SPAPR_MACHINE(2_7, "2.7", false); 4830 4831 /* 4832 * pseries-2.6 4833 */ 4834 4835 static void spapr_machine_2_6_class_options(MachineClass *mc) 4836 { 4837 static GlobalProperty compat[] = { 4838 { TYPE_SPAPR_PCI_HOST_BRIDGE, "ddw", "off" }, 4839 }; 4840 4841 spapr_machine_2_7_class_options(mc); 4842 mc->has_hotpluggable_cpus = false; 4843 compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len); 4844 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4845 } 4846 4847 DEFINE_SPAPR_MACHINE(2_6, "2.6", false); 4848 4849 /* 4850 * pseries-2.5 4851 */ 4852 4853 static void spapr_machine_2_5_class_options(MachineClass *mc) 4854 { 4855 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4856 static GlobalProperty compat[] = { 4857 { "spapr-vlan", "use-rx-buffer-pools", "off" }, 4858 }; 4859 4860 spapr_machine_2_6_class_options(mc); 4861 smc->use_ohci_by_default = true; 4862 compat_props_add(mc->compat_props, hw_compat_2_5, hw_compat_2_5_len); 4863 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4864 } 4865 4866 DEFINE_SPAPR_MACHINE(2_5, "2.5", false); 4867 4868 /* 4869 * pseries-2.4 4870 */ 4871 4872 static void spapr_machine_2_4_class_options(MachineClass *mc) 4873 { 4874 SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); 4875 4876 spapr_machine_2_5_class_options(mc); 4877 smc->dr_lmb_enabled = false; 4878 compat_props_add(mc->compat_props, hw_compat_2_4, hw_compat_2_4_len); 4879 } 4880 4881 DEFINE_SPAPR_MACHINE(2_4, "2.4", false); 4882 4883 /* 4884 * pseries-2.3 4885 */ 4886 4887 static void spapr_machine_2_3_class_options(MachineClass *mc) 4888 { 4889 static GlobalProperty compat[] = { 4890 { "spapr-pci-host-bridge", "dynamic-reconfiguration", "off" }, 4891 }; 4892 spapr_machine_2_4_class_options(mc); 4893 compat_props_add(mc->compat_props, hw_compat_2_3, hw_compat_2_3_len); 4894 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4895 } 4896 DEFINE_SPAPR_MACHINE(2_3, "2.3", false); 4897 4898 /* 4899 * pseries-2.2 4900 */ 4901 4902 static void spapr_machine_2_2_class_options(MachineClass *mc) 4903 { 4904 static GlobalProperty compat[] = { 4905 { TYPE_SPAPR_PCI_HOST_BRIDGE, "mem_win_size", "0x20000000" }, 4906 }; 4907 4908 spapr_machine_2_3_class_options(mc); 4909 compat_props_add(mc->compat_props, hw_compat_2_2, hw_compat_2_2_len); 4910 compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); 4911 mc->default_machine_opts = "modern-hotplug-events=off,suppress-vmdesc=on"; 4912 } 4913 DEFINE_SPAPR_MACHINE(2_2, "2.2", false); 4914 4915 /* 4916 * pseries-2.1 4917 */ 4918 4919 static void spapr_machine_2_1_class_options(MachineClass *mc) 4920 { 4921 spapr_machine_2_2_class_options(mc); 4922 compat_props_add(mc->compat_props, hw_compat_2_1, hw_compat_2_1_len); 4923 } 4924 DEFINE_SPAPR_MACHINE(2_1, "2.1", false); 4925 4926 static void spapr_machine_register_types(void) 4927 { 4928 type_register_static(&spapr_machine_info); 4929 } 4930 4931 type_init(spapr_machine_register_types) 4932