hw/i386/pc_q35.c

   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
  31 #include "qemu/osdep.h"
  32 #include "qemu/units.h"
  33 #include "hw/hw.h"
  34 #include "hw/loader.h"
  35 #include "sysemu/arch_init.h"
  36 #include "hw/i2c/smbus.h"
  37 #include "hw/boards.h"
  38 #include "hw/timer/mc146818rtc.h"
  39 #include "hw/xen/xen.h"
  40 #include "sysemu/kvm.h"
  41 #include "kvm_i386.h"
  42 #include "hw/kvm/clock.h"
  43 #include "hw/pci-host/q35.h"
  44 #include "exec/address-spaces.h"
  45 #include "hw/i386/pc.h"
  46 #include "hw/i386/ich9.h"
  47 #include "hw/i386/amd_iommu.h"
  48 #include "hw/i386/intel_iommu.h"
  49 #include "hw/display/ramfb.h"
  50 #include "hw/smbios/smbios.h"
  51 #include "hw/ide/pci.h"
  52 #include "hw/ide/ahci.h"
  53 #include "hw/usb.h"
  54 #include "qapi/error.h"
  55 #include "qemu/error-report.h"
  56 #include "sysemu/numa.h"
  57
  58 /* ICH9 AHCI has 6 ports */
  59 #define MAX_SATA_PORTS     6
  60
  61 /* PC hardware initialisation */
  62 static void pc_q35_init(MachineState *machine)
  63 {
  64     PCMachineState *pcms = PC_MACHINE(machine);
  65     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
  66     Q35PCIHost *q35_host;
  67     PCIHostState *phb;
  68     PCIBus *host_bus;
  69     PCIDevice *lpc;
  70     DeviceState *lpc_dev;
  71     BusState *idebus[MAX_SATA_PORTS];
  72     ISADevice *rtc_state;
  73     MemoryRegion *system_io = get_system_io();
  74     MemoryRegion *pci_memory;
  75     MemoryRegion *rom_memory;
  76     MemoryRegion *ram_memory;
  77     GSIState *gsi_state;
  78     ISABus *isa_bus;
  79     qemu_irq *i8259;
  80     int i;
  81     ICH9LPCState *ich9_lpc;
  82     PCIDevice *ahci;
  83     ram_addr_t lowmem;
  84     DriveInfo *hd[MAX_SATA_PORTS];
  85     MachineClass *mc = MACHINE_GET_CLASS(machine);
  86
  87     /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
  88      * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
  89      * also known as MMCFG).
  90      * If it doesn't, we need to split it in chunks below and above 4G.
  91      * In any case, try to make sure that guest addresses aligned at
  92      * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
  93      */
  94     if (machine->ram_size >= 0xb0000000) {
  95         lowmem = 0x80000000;
  96     } else {
  97         lowmem = 0xb0000000;
  98     }
  99
 100     /* Handle the machine opt max-ram-below-4g.  It is basically doing
 101      * min(qemu limit, user limit).
 102      */
 103     if (!pcms->max_ram_below_4g) {
 104         pcms->max_ram_below_4g = 1ULL << 32; /* default: 4G */;
 105     }
 106     if (lowmem > pcms->max_ram_below_4g) {
 107         lowmem = pcms->max_ram_below_4g;
 108         if (machine->ram_size - lowmem > lowmem &&
 109             lowmem & (1 * GiB - 1)) {
 110             warn_report("There is possibly poor performance as the ram size "
 111                         " (0x%" PRIx64 ") is more then twice the size of"
 112                         " max-ram-below-4g (%"PRIu64") and"
 113                         " max-ram-below-4g is not a multiple of 1G.",
 114                         (uint64_t)machine->ram_size, pcms->max_ram_below_4g);
 115         }
 116     }
 117
 118     if (machine->ram_size >= lowmem) {
 119         pcms->above_4g_mem_size = machine->ram_size - lowmem;
 120         pcms->below_4g_mem_size = lowmem;
 121     } else {
 122         pcms->above_4g_mem_size = 0;
 123         pcms->below_4g_mem_size = machine->ram_size;
 124     }
 125
 126     if (xen_enabled()) {
 127         xen_hvm_init(pcms, &ram_memory);
 128     }
 129
 130     pc_cpus_init(pcms);
 131
 132     kvmclock_create();
 133
 134     /* pci enabled */
 135     if (pcmc->pci_enabled) {
 136         pci_memory = g_new(MemoryRegion, 1);
 137         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
 138         rom_memory = pci_memory;
 139     } else {
 140         pci_memory = NULL;
 141         rom_memory = get_system_memory();
 142     }
 143
 144     pc_guest_info_init(pcms);
 145
 146     if (pcmc->smbios_defaults) {
 147         /* These values are guest ABI, do not change */
 148         smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
 149                             mc->name, pcmc->smbios_legacy_mode,
 150                             pcmc->smbios_uuid_encoded,
 151                             SMBIOS_ENTRY_POINT_21);
 152     }
 153
 154     /* allocate ram and load rom/bios */
 155     if (!xen_enabled()) {
 156         pc_memory_init(pcms, get_system_memory(),
 157                        rom_memory, &ram_memory);
 158     }
 159
 160     /* irq lines */
 161     gsi_state = g_malloc0(sizeof(*gsi_state));
 162     if (kvm_ioapic_in_kernel()) {
 163         kvm_pc_setup_irq_routing(pcmc->pci_enabled);
 164         pcms->gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
 165                                        GSI_NUM_PINS);
 166     } else {
 167         pcms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 168     }
 169
 170     /* create pci host bus */
 171     q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE));
 172
 173     object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host), NULL);
 174     object_property_set_link(OBJECT(q35_host), OBJECT(ram_memory),
 175                              MCH_HOST_PROP_RAM_MEM, NULL);
 176     object_property_set_link(OBJECT(q35_host), OBJECT(pci_memory),
 177                              MCH_HOST_PROP_PCI_MEM, NULL);
 178     object_property_set_link(OBJECT(q35_host), OBJECT(get_system_memory()),
 179                              MCH_HOST_PROP_SYSTEM_MEM, NULL);
 180     object_property_set_link(OBJECT(q35_host), OBJECT(system_io),
 181                              MCH_HOST_PROP_IO_MEM, NULL);
 182     object_property_set_int(OBJECT(q35_host), pcms->below_4g_mem_size,
 183                             PCI_HOST_BELOW_4G_MEM_SIZE, NULL);
 184     object_property_set_int(OBJECT(q35_host), pcms->above_4g_mem_size,
 185                             PCI_HOST_ABOVE_4G_MEM_SIZE, NULL);
 186     /* pci */
 187     qdev_init_nofail(DEVICE(q35_host));
 188     phb = PCI_HOST_BRIDGE(q35_host);
 189     host_bus = phb->bus;
 190     /* create ISA bus */
 191     lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
 192                                           ICH9_LPC_FUNC), true,
 193                                           TYPE_ICH9_LPC_DEVICE);
 194
 195     object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
 196                              TYPE_HOTPLUG_HANDLER,
 197                              (Object **)&pcms->acpi_dev,
 198                              object_property_allow_set_link,
 199                              OBJ_PROP_LINK_STRONG, &error_abort);
 200     object_property_set_link(OBJECT(machine), OBJECT(lpc),
 201                              PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
 202
 203     ich9_lpc = ICH9_LPC_DEVICE(lpc);
 204     lpc_dev = DEVICE(lpc);
 205     for (i = 0; i < GSI_NUM_PINS; i++) {
 206         qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, pcms->gsi[i]);
 207     }
 208     pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
 209                  ICH9_LPC_NB_PIRQS);
 210     pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
 211     isa_bus = ich9_lpc->isa_bus;
 212
 213     if (kvm_pic_in_kernel()) {
 214         i8259 = kvm_i8259_init(isa_bus);
 215     } else if (xen_enabled()) {
 216         i8259 = xen_interrupt_controller_init();
 217     } else {
 218         i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq());
 219     }
 220
 221     for (i = 0; i < ISA_NUM_IRQS; i++) {
 222         gsi_state->i8259_irq[i] = i8259[i];
 223     }
 224     g_free(i8259);
 225
 226     if (pcmc->pci_enabled) {
 227         ioapic_init_gsi(gsi_state, "q35");
 228     }
 229
 230     pc_register_ferr_irq(pcms->gsi[13]);
 231
 232     assert(pcms->vmport != ON_OFF_AUTO__MAX);
 233     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
 234         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
 235     }
 236
 237     /* init basic PC hardware */
 238     pc_basic_device_init(isa_bus, pcms->gsi, &rtc_state, !mc->no_floppy,
 239                          (pcms->vmport != ON_OFF_AUTO_ON), pcms->pit,
 240                          0xff0104);
 241
 242     /* connect pm stuff to lpc */
 243     ich9_lpc_pm_init(lpc, pc_machine_is_smm_enabled(pcms));
 244
 245     if (pcms->sata) {
 246         /* ahci and SATA device, for q35 1 ahci controller is built-in */
 247         ahci = pci_create_simple_multifunction(host_bus,
 248                                                PCI_DEVFN(ICH9_SATA1_DEV,
 249                                                          ICH9_SATA1_FUNC),
 250                                                true, "ich9-ahci");
 251         idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
 252         idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
 253         g_assert(MAX_SATA_PORTS == ahci_get_num_ports(ahci));
 254         ide_drive_get(hd, ahci_get_num_ports(ahci));
 255         ahci_ide_create_devs(ahci, hd);
 256     } else {
 257         idebus[0] = idebus[1] = NULL;
 258     }
 259
 260     if (machine_usb(machine)) {
 261         /* Should we create 6 UHCI according to ich9 spec? */
 262         ehci_create_ich9_with_companions(host_bus, 0x1d);
 263     }
 264
 265     if (pcms->smbus) {
 266         /* TODO: Populate SPD eeprom data.  */
 267         smbus_eeprom_init(ich9_smb_init(host_bus,
 268                                         PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
 269                                         0xb100),
 270                           8, NULL, 0);
 271     }
 272
 273     pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
 274
 275     /* the rest devices to which pci devfn is automatically assigned */
 276     pc_vga_init(isa_bus, host_bus);
 277     pc_nic_init(pcmc, isa_bus, host_bus);
 278
 279     if (pcms->acpi_nvdimm_state.is_enabled) {
 280         nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
 281                                pcms->fw_cfg, OBJECT(pcms));
 282     }
 283 }
 284
 285 #define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
 286     static void pc_init_##suffix(MachineState *machine) \
 287     { \
 288         void (*compat)(MachineState *m) = (compatfn); \
 289         if (compat) { \
 290             compat(machine); \
 291         } \
 292         pc_q35_init(machine); \
 293     } \
 294     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
 295
 296
 297 static void pc_q35_machine_options(MachineClass *m)
 298 {
 299     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 300     pcmc->default_nic_model = "e1000e";
 301
 302     m->family = "pc_q35";
 303     m->desc = "Standard PC (Q35 + ICH9, 2009)";
 304     m->units_per_default_bus = 1;
 305     m->default_machine_opts = "firmware=bios-256k.bin";
 306     m->default_display = "std";
 307     m->no_floppy = 1;
 308     machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
 309     machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
 310     machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
 311     m->max_cpus = 288;
 312 }
 313
 314 static void pc_q35_3_1_machine_options(MachineClass *m)
 315 {
 316     pc_q35_machine_options(m);
 317     m->alias = "q35";
 318 }
 319
 320 DEFINE_Q35_MACHINE(v3_1, "pc-q35-3.1", NULL,
 321                    pc_q35_3_1_machine_options);
 322
 323 static void pc_q35_3_0_machine_options(MachineClass *m)
 324 {
 325     pc_q35_3_1_machine_options(m);
 326     m->alias = NULL;
 327     SET_MACHINE_COMPAT(m, PC_COMPAT_3_0);
 328 }
 329
 330 DEFINE_Q35_MACHINE(v3_0, "pc-q35-3.0", NULL,
 331                     pc_q35_3_0_machine_options);
 332
 333 static void pc_q35_2_12_machine_options(MachineClass *m)
 334 {
 335     pc_q35_3_0_machine_options(m);
 336     SET_MACHINE_COMPAT(m, PC_COMPAT_2_12);
 337 }
 338
 339 DEFINE_Q35_MACHINE(v2_12, "pc-q35-2.12", NULL,
 340                    pc_q35_2_12_machine_options);
 341
 342 static void pc_q35_2_11_machine_options(MachineClass *m)
 343 {
 344     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 345
 346     pc_q35_2_12_machine_options(m);
 347     pcmc->default_nic_model = "e1000";
 348     SET_MACHINE_COMPAT(m, PC_COMPAT_2_11);
 349 }
 350
 351 DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL,
 352                    pc_q35_2_11_machine_options);
 353
 354 static void pc_q35_2_10_machine_options(MachineClass *m)
 355 {
 356     pc_q35_2_11_machine_options(m);
 357     SET_MACHINE_COMPAT(m, PC_COMPAT_2_10);
 358     m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
 359     m->auto_enable_numa_with_memhp = false;
 360 }
 361
 362 DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
 363                    pc_q35_2_10_machine_options);
 364
 365 static void pc_q35_2_9_machine_options(MachineClass *m)
 366 {
 367     pc_q35_2_10_machine_options(m);
 368     SET_MACHINE_COMPAT(m, PC_COMPAT_2_9);
 369 }
 370
 371 DEFINE_Q35_MACHINE(v2_9, "pc-q35-2.9", NULL,
 372                    pc_q35_2_9_machine_options);
 373
 374 static void pc_q35_2_8_machine_options(MachineClass *m)
 375 {
 376     pc_q35_2_9_machine_options(m);
 377     SET_MACHINE_COMPAT(m, PC_COMPAT_2_8);
 378 }
 379
 380 DEFINE_Q35_MACHINE(v2_8, "pc-q35-2.8", NULL,
 381                    pc_q35_2_8_machine_options);
 382
 383 static void pc_q35_2_7_machine_options(MachineClass *m)
 384 {
 385     pc_q35_2_8_machine_options(m);
 386     m->max_cpus = 255;
 387     SET_MACHINE_COMPAT(m, PC_COMPAT_2_7);
 388 }
 389
 390 DEFINE_Q35_MACHINE(v2_7, "pc-q35-2.7", NULL,
 391                    pc_q35_2_7_machine_options);
 392
 393 static void pc_q35_2_6_machine_options(MachineClass *m)
 394 {
 395     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 396     pc_q35_2_7_machine_options(m);
 397     pcmc->legacy_cpu_hotplug = true;
 398     pcmc->linuxboot_dma_enabled = false;
 399     SET_MACHINE_COMPAT(m, PC_COMPAT_2_6);
 400 }
 401
 402 DEFINE_Q35_MACHINE(v2_6, "pc-q35-2.6", NULL,
 403                    pc_q35_2_6_machine_options);
 404
 405 static void pc_q35_2_5_machine_options(MachineClass *m)
 406 {
 407     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 408     pc_q35_2_6_machine_options(m);
 409     pcmc->save_tsc_khz = false;
 410     m->legacy_fw_cfg_order = 1;
 411     SET_MACHINE_COMPAT(m, PC_COMPAT_2_5);
 412 }
 413
 414 DEFINE_Q35_MACHINE(v2_5, "pc-q35-2.5", NULL,
 415                    pc_q35_2_5_machine_options);
 416
 417 static void pc_q35_2_4_machine_options(MachineClass *m)
 418 {
 419     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 420     pc_q35_2_5_machine_options(m);
 421     m->hw_version = "2.4.0";
 422     pcmc->broken_reserved_end = true;
 423     SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
 424 }
 425
 426 DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
 427                    pc_q35_2_4_machine_options);