1 /* 2 * Q35 chipset based pc system emulator 3 * 4 * Copyright (c) 2003-2004 Fabrice Bellard 5 * Copyright (c) 2009, 2010 6 * Isaku Yamahata <yamahata at valinux co jp> 7 * VA Linux Systems Japan K.K. 8 * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> 9 * 10 * This is based on pc.c, but heavily modified. 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a copy 13 * of this software and associated documentation files (the "Software"), to deal 14 * in the Software without restriction, including without limitation the rights 15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 16 * copies of the Software, and to permit persons to whom the Software is 17 * furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice shall be included in 20 * all copies or substantial portions of the Software. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 28 * THE SOFTWARE. 29 */ 30 #include "hw/hw.h" 31 #include "hw/loader.h" 32 #include "sysemu/arch_init.h" 33 #include "hw/i2c/smbus.h" 34 #include "hw/boards.h" 35 #include "hw/timer/mc146818rtc.h" 36 #include "hw/xen/xen.h" 37 #include "sysemu/kvm.h" 38 #include "hw/kvm/clock.h" 39 #include "hw/pci-host/q35.h" 40 #include "exec/address-spaces.h" 41 #include "hw/i386/ich9.h" 42 #include "hw/smbios/smbios.h" 43 #include "hw/ide/pci.h" 44 #include "hw/ide/ahci.h" 45 #include "hw/usb.h" 46 #include "hw/cpu/icc_bus.h" 47 #include "qemu/error-report.h" 48 #include "migration/migration.h" 49 50 /* ICH9 AHCI has 6 ports */ 51 #define MAX_SATA_PORTS 6 52 53 static bool has_acpi_build = true; 54 static bool rsdp_in_ram = true; 55 static bool smbios_defaults = true; 56 static bool smbios_legacy_mode; 57 static bool smbios_uuid_encoded = true; 58 /* Make sure that guest addresses aligned at 1Gbyte boundaries get mapped to 59 * host addresses aligned at 1Gbyte boundaries. This way we can use 1GByte 60 * pages in the host. 61 */ 62 static bool gigabyte_align = true; 63 static bool has_reserved_memory = true; 64 65 /* PC hardware initialisation */ 66 static void pc_q35_init(MachineState *machine) 67 { 68 PCMachineState *pcms = PC_MACHINE(machine); 69 Q35PCIHost *q35_host; 70 PCIHostState *phb; 71 PCIBus *host_bus; 72 PCIDevice *lpc; 73 BusState *idebus[MAX_SATA_PORTS]; 74 ISADevice *rtc_state; 75 MemoryRegion *pci_memory; 76 MemoryRegion *rom_memory; 77 MemoryRegion *ram_memory; 78 GSIState *gsi_state; 79 ISABus *isa_bus; 80 int pci_enabled = 1; 81 qemu_irq *gsi; 82 qemu_irq *i8259; 83 int i; 84 ICH9LPCState *ich9_lpc; 85 PCIDevice *ahci; 86 DeviceState *icc_bridge; 87 PcGuestInfo *guest_info; 88 ram_addr_t lowmem; 89 DriveInfo *hd[MAX_SATA_PORTS]; 90 MachineClass *mc = MACHINE_GET_CLASS(machine); 91 92 /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory 93 * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping 94 * also known as MMCFG). 95 * If it doesn't, we need to split it in chunks below and above 4G. 96 * In any case, try to make sure that guest addresses aligned at 97 * 1G boundaries get mapped to host addresses aligned at 1G boundaries. 98 * For old machine types, use whatever split we used historically to avoid 99 * breaking migration. 100 */ 101 if (machine->ram_size >= 0xb0000000) { 102 lowmem = gigabyte_align ? 0x80000000 : 0xb0000000; 103 } else { 104 lowmem = 0xb0000000; 105 } 106 107 /* Handle the machine opt max-ram-below-4g. It is basically doing 108 * min(qemu limit, user limit). 109 */ 110 if (lowmem > pcms->max_ram_below_4g) { 111 lowmem = pcms->max_ram_below_4g; 112 if (machine->ram_size - lowmem > lowmem && 113 lowmem & ((1ULL << 30) - 1)) { 114 error_report("Warning: Large machine and max_ram_below_4g(%"PRIu64 115 ") not a multiple of 1G; possible bad performance.", 116 pcms->max_ram_below_4g); 117 } 118 } 119 120 if (machine->ram_size >= lowmem) { 121 pcms->above_4g_mem_size = machine->ram_size - lowmem; 122 pcms->below_4g_mem_size = lowmem; 123 } else { 124 pcms->above_4g_mem_size = 0; 125 pcms->below_4g_mem_size = machine->ram_size; 126 } 127 128 if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) { 129 fprintf(stderr, "xen hardware virtual machine initialisation failed\n"); 130 exit(1); 131 } 132 133 icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE); 134 object_property_add_child(qdev_get_machine(), "icc-bridge", 135 OBJECT(icc_bridge), NULL); 136 137 pc_cpus_init(machine->cpu_model, icc_bridge); 138 pc_acpi_init("q35-acpi-dsdt.aml"); 139 140 kvmclock_create(); 141 142 /* pci enabled */ 143 if (pci_enabled) { 144 pci_memory = g_new(MemoryRegion, 1); 145 memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); 146 rom_memory = pci_memory; 147 } else { 148 pci_memory = NULL; 149 rom_memory = get_system_memory(); 150 } 151 152 guest_info = pc_guest_info_init(pcms); 153 guest_info->isapc_ram_fw = false; 154 guest_info->has_acpi_build = has_acpi_build; 155 guest_info->has_reserved_memory = has_reserved_memory; 156 guest_info->rsdp_in_ram = rsdp_in_ram; 157 158 /* Migration was not supported in 2.0 for Q35, so do not bother 159 * with this hack (see hw/i386/acpi-build.c). 160 */ 161 guest_info->legacy_acpi_table_size = 0; 162 163 if (smbios_defaults) { 164 /* These values are guest ABI, do not change */ 165 smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)", 166 mc->name, smbios_legacy_mode, smbios_uuid_encoded, 167 SMBIOS_ENTRY_POINT_21); 168 } 169 170 /* allocate ram and load rom/bios */ 171 if (!xen_enabled()) { 172 pc_memory_init(pcms, get_system_memory(), 173 rom_memory, &ram_memory, guest_info); 174 } 175 176 /* irq lines */ 177 gsi_state = g_malloc0(sizeof(*gsi_state)); 178 if (kvm_irqchip_in_kernel()) { 179 kvm_pc_setup_irq_routing(pci_enabled); 180 gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state, 181 GSI_NUM_PINS); 182 } else { 183 gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS); 184 } 185 186 /* create pci host bus */ 187 q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE)); 188 189 object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host), NULL); 190 q35_host->mch.ram_memory = ram_memory; 191 q35_host->mch.pci_address_space = pci_memory; 192 q35_host->mch.system_memory = get_system_memory(); 193 q35_host->mch.address_space_io = get_system_io(); 194 q35_host->mch.below_4g_mem_size = pcms->below_4g_mem_size; 195 q35_host->mch.above_4g_mem_size = pcms->above_4g_mem_size; 196 q35_host->mch.guest_info = guest_info; 197 /* pci */ 198 qdev_init_nofail(DEVICE(q35_host)); 199 phb = PCI_HOST_BRIDGE(q35_host); 200 host_bus = phb->bus; 201 /* create ISA bus */ 202 lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV, 203 ICH9_LPC_FUNC), true, 204 TYPE_ICH9_LPC_DEVICE); 205 206 object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP, 207 TYPE_HOTPLUG_HANDLER, 208 (Object **)&pcms->acpi_dev, 209 object_property_allow_set_link, 210 OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort); 211 object_property_set_link(OBJECT(machine), OBJECT(lpc), 212 PC_MACHINE_ACPI_DEVICE_PROP, &error_abort); 213 214 ich9_lpc = ICH9_LPC_DEVICE(lpc); 215 ich9_lpc->pic = gsi; 216 ich9_lpc->ioapic = gsi_state->ioapic_irq; 217 pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc, 218 ICH9_LPC_NB_PIRQS); 219 pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq); 220 isa_bus = ich9_lpc->isa_bus; 221 222 /*end early*/ 223 isa_bus_irqs(isa_bus, gsi); 224 225 if (kvm_irqchip_in_kernel()) { 226 i8259 = kvm_i8259_init(isa_bus); 227 } else if (xen_enabled()) { 228 i8259 = xen_interrupt_controller_init(); 229 } else { 230 i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq()); 231 } 232 233 for (i = 0; i < ISA_NUM_IRQS; i++) { 234 gsi_state->i8259_irq[i] = i8259[i]; 235 } 236 if (pci_enabled) { 237 ioapic_init_gsi(gsi_state, "q35"); 238 } 239 qdev_init_nofail(icc_bridge); 240 241 pc_register_ferr_irq(gsi[13]); 242 243 assert(pcms->vmport != ON_OFF_AUTO_MAX); 244 if (pcms->vmport == ON_OFF_AUTO_AUTO) { 245 pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON; 246 } 247 248 /* init basic PC hardware */ 249 pc_basic_device_init(isa_bus, gsi, &rtc_state, !mc->no_floppy, 250 (pcms->vmport != ON_OFF_AUTO_ON), 0xff0104); 251 252 /* connect pm stuff to lpc */ 253 ich9_lpc_pm_init(lpc, pc_machine_is_smm_enabled(pcms), !mc->no_tco); 254 255 /* ahci and SATA device, for q35 1 ahci controller is built-in */ 256 ahci = pci_create_simple_multifunction(host_bus, 257 PCI_DEVFN(ICH9_SATA1_DEV, 258 ICH9_SATA1_FUNC), 259 true, "ich9-ahci"); 260 idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0"); 261 idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1"); 262 g_assert(MAX_SATA_PORTS == ICH_AHCI(ahci)->ahci.ports); 263 ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports); 264 ahci_ide_create_devs(ahci, hd); 265 266 if (usb_enabled()) { 267 /* Should we create 6 UHCI according to ich9 spec? */ 268 ehci_create_ich9_with_companions(host_bus, 0x1d); 269 } 270 271 /* TODO: Populate SPD eeprom data. */ 272 smbus_eeprom_init(ich9_smb_init(host_bus, 273 PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC), 274 0xb100), 275 8, NULL, 0); 276 277 pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state); 278 279 /* the rest devices to which pci devfn is automatically assigned */ 280 pc_vga_init(isa_bus, host_bus); 281 pc_nic_init(isa_bus, host_bus); 282 if (pci_enabled) { 283 pc_pci_device_init(host_bus); 284 } 285 } 286 287 static void pc_compat_2_3(MachineState *machine) 288 { 289 PCMachineState *pcms = PC_MACHINE(machine); 290 savevm_skip_section_footers(); 291 if (kvm_enabled()) { 292 pcms->smm = ON_OFF_AUTO_OFF; 293 } 294 global_state_set_optional(); 295 savevm_skip_configuration(); 296 } 297 298 static void pc_compat_2_2(MachineState *machine) 299 { 300 pc_compat_2_3(machine); 301 rsdp_in_ram = false; 302 machine->suppress_vmdesc = true; 303 } 304 305 static void pc_compat_2_1(MachineState *machine) 306 { 307 PCMachineState *pcms = PC_MACHINE(machine); 308 309 pc_compat_2_2(machine); 310 pcms->enforce_aligned_dimm = false; 311 smbios_uuid_encoded = false; 312 x86_cpu_compat_kvm_no_autodisable(FEAT_8000_0001_ECX, CPUID_EXT3_SVM); 313 } 314 315 static void pc_compat_2_0(MachineState *machine) 316 { 317 pc_compat_2_1(machine); 318 smbios_legacy_mode = true; 319 has_reserved_memory = false; 320 pc_set_legacy_acpi_data_size(); 321 } 322 323 static void pc_compat_1_7(MachineState *machine) 324 { 325 pc_compat_2_0(machine); 326 smbios_defaults = false; 327 gigabyte_align = false; 328 option_rom_has_mr = true; 329 x86_cpu_compat_kvm_no_autoenable(FEAT_1_ECX, CPUID_EXT_X2APIC); 330 } 331 332 static void pc_compat_1_6(MachineState *machine) 333 { 334 pc_compat_1_7(machine); 335 rom_file_has_mr = false; 336 has_acpi_build = false; 337 } 338 339 static void pc_compat_1_5(MachineState *machine) 340 { 341 pc_compat_1_6(machine); 342 } 343 344 static void pc_compat_1_4(MachineState *machine) 345 { 346 pc_compat_1_5(machine); 347 } 348 349 #define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \ 350 static void pc_init_##suffix(MachineState *machine) \ 351 { \ 352 void (*compat)(MachineState *m) = (compatfn); \ 353 if (compat) { \ 354 compat(machine); \ 355 } \ 356 pc_q35_init(machine); \ 357 } \ 358 DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn) 359 360 361 static void pc_q35_machine_options(MachineClass *m) 362 { 363 m->family = "pc_q35"; 364 m->desc = "Standard PC (Q35 + ICH9, 2009)"; 365 m->hot_add_cpu = pc_hot_add_cpu; 366 m->units_per_default_bus = 1; 367 } 368 369 static void pc_q35_2_4_machine_options(MachineClass *m) 370 { 371 PCMachineClass *pcmc = PC_MACHINE_CLASS(m); 372 pc_q35_machine_options(m); 373 pcmc->broken_reserved_end = true; 374 m->default_machine_opts = "firmware=bios-256k.bin"; 375 m->default_display = "std"; 376 m->no_floppy = 1; 377 m->no_tco = 0; 378 m->alias = "q35"; 379 } 380 381 DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL, 382 pc_q35_2_4_machine_options); 383 384 385 static void pc_q35_2_3_machine_options(MachineClass *m) 386 { 387 pc_q35_2_4_machine_options(m); 388 m->no_floppy = 0; 389 m->no_tco = 1; 390 m->alias = NULL; 391 SET_MACHINE_COMPAT(m, PC_COMPAT_2_3); 392 } 393 394 DEFINE_Q35_MACHINE(v2_3, "pc-q35-2.3", pc_compat_2_3, 395 pc_q35_2_3_machine_options); 396 397 398 static void pc_q35_2_2_machine_options(MachineClass *m) 399 { 400 pc_q35_2_3_machine_options(m); 401 SET_MACHINE_COMPAT(m, PC_COMPAT_2_2); 402 } 403 404 DEFINE_Q35_MACHINE(v2_2, "pc-q35-2.2", pc_compat_2_2, 405 pc_q35_2_2_machine_options); 406 407 408 static void pc_q35_2_1_machine_options(MachineClass *m) 409 { 410 pc_q35_2_2_machine_options(m); 411 m->default_display = NULL; 412 SET_MACHINE_COMPAT(m, PC_COMPAT_2_1); 413 } 414 415 DEFINE_Q35_MACHINE(v2_1, "pc-q35-2.1", pc_compat_2_1, 416 pc_q35_2_1_machine_options); 417 418 419 static void pc_q35_2_0_machine_options(MachineClass *m) 420 { 421 pc_q35_2_1_machine_options(m); 422 SET_MACHINE_COMPAT(m, PC_COMPAT_2_0); 423 } 424 425 DEFINE_Q35_MACHINE(v2_0, "pc-q35-2.0", pc_compat_2_0, 426 pc_q35_2_0_machine_options); 427 428 429 static void pc_q35_1_7_machine_options(MachineClass *m) 430 { 431 pc_q35_2_0_machine_options(m); 432 m->default_machine_opts = NULL; 433 SET_MACHINE_COMPAT(m, PC_COMPAT_1_7); 434 } 435 436 DEFINE_Q35_MACHINE(v1_7, "pc-q35-1.7", pc_compat_1_7, 437 pc_q35_1_7_machine_options); 438 439 440 static void pc_q35_1_6_machine_options(MachineClass *m) 441 { 442 pc_q35_machine_options(m); 443 SET_MACHINE_COMPAT(m, PC_COMPAT_1_6); 444 } 445 446 DEFINE_Q35_MACHINE(v1_6, "pc-q35-1.6", pc_compat_1_6, 447 pc_q35_1_6_machine_options); 448 449 450 static void pc_q35_1_5_machine_options(MachineClass *m) 451 { 452 pc_q35_1_6_machine_options(m); 453 SET_MACHINE_COMPAT(m, PC_COMPAT_1_5); 454 } 455 456 DEFINE_Q35_MACHINE(v1_5, "pc-q35-1.5", pc_compat_1_5, 457 pc_q35_1_5_machine_options); 458 459 460 static void pc_q35_1_4_machine_options(MachineClass *m) 461 { 462 pc_q35_1_5_machine_options(m); 463 m->hot_add_cpu = NULL; 464 SET_MACHINE_COMPAT(m, PC_COMPAT_1_4); 465 } 466 467 DEFINE_Q35_MACHINE(v1_4, "pc-q35-1.4", pc_compat_1_4, 468 pc_q35_1_4_machine_options); 469