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 #include "qemu/osdep.h"
  31 #include "hw/hw.h"
  32 #include "hw/loader.h"
  33 #include "sysemu/arch_init.h"
  34 #include "hw/i2c/smbus.h"
  35 #include "hw/boards.h"
  36 #include "hw/timer/mc146818rtc.h"
  37 #include "hw/xen/xen.h"
  38 #include "sysemu/kvm.h"
  39 #include "hw/kvm/clock.h"
  40 #include "hw/pci-host/q35.h"
  41 #include "exec/address-spaces.h"
  42 #include "hw/i386/pc.h"
  43 #include "hw/i386/ich9.h"
  44 #include "hw/smbios/smbios.h"
  45 #include "hw/ide/pci.h"
  46 #include "hw/ide/ahci.h"
  47 #include "hw/usb.h"
  48 #include "qemu/error-report.h"
  49 #include "migration/migration.h"
  50
  51 /* ICH9 AHCI has 6 ports */
  52 #define MAX_SATA_PORTS     6
  53
  54 /* PC hardware initialisation */
  55 static void pc_q35_init(MachineState *machine)
  56 {
  57     PCMachineState *pcms = PC_MACHINE(machine);
  58     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
  59     Q35PCIHost *q35_host;
  60     PCIHostState *phb;
  61     PCIBus *host_bus;
  62     PCIDevice *lpc;
  63     DeviceState *lpc_dev;
  64     BusState *idebus[MAX_SATA_PORTS];
  65     ISADevice *rtc_state;
  66     MemoryRegion *system_io = get_system_io();
  67     MemoryRegion *pci_memory;
  68     MemoryRegion *rom_memory;
  69     MemoryRegion *ram_memory;
  70     GSIState *gsi_state;
  71     ISABus *isa_bus;
  72     qemu_irq *i8259;
  73     int i;
  74     ICH9LPCState *ich9_lpc;
  75     PCIDevice *ahci;
  76     ram_addr_t lowmem;
  77     DriveInfo *hd[MAX_SATA_PORTS];
  78     MachineClass *mc = MACHINE_GET_CLASS(machine);
  79
  80     /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
  81      * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
  82      * also known as MMCFG).
  83      * If it doesn't, we need to split it in chunks below and above 4G.
  84      * In any case, try to make sure that guest addresses aligned at
  85      * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
  86      */
  87     if (machine->ram_size >= 0xb0000000) {
  88         lowmem = 0x80000000;
  89     } else {
  90         lowmem = 0xb0000000;
  91     }
  92
  93     /* Handle the machine opt max-ram-below-4g.  It is basically doing
  94      * min(qemu limit, user limit).
  95      */
  96     if (!pcms->max_ram_below_4g) {
  97         pcms->max_ram_below_4g = 1ULL << 32; /* default: 4G */;
  98     }
  99     if (lowmem > pcms->max_ram_below_4g) {
 100         lowmem = pcms->max_ram_below_4g;
 101         if (machine->ram_size - lowmem > lowmem &&
 102             lowmem & ((1ULL << 30) - 1)) {
 103             error_report("Warning: Large machine and max_ram_below_4g(%"PRIu64
 104                          ") not a multiple of 1G; possible bad performance.",
 105                          pcms->max_ram_below_4g);
 106         }
 107     }
 108
 109     if (machine->ram_size >= lowmem) {
 110         pcms->above_4g_mem_size = machine->ram_size - lowmem;
 111         pcms->below_4g_mem_size = lowmem;
 112     } else {
 113         pcms->above_4g_mem_size = 0;
 114         pcms->below_4g_mem_size = machine->ram_size;
 115     }
 116
 117     if (xen_enabled()) {
 118         xen_hvm_init(pcms, &ram_memory);
 119     }
 120
 121     pc_cpus_init(pcms);
 122
 123     kvmclock_create();
 124
 125     /* pci enabled */
 126     if (pcmc->pci_enabled) {
 127         pci_memory = g_new(MemoryRegion, 1);
 128         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
 129         rom_memory = pci_memory;
 130     } else {
 131         pci_memory = NULL;
 132         rom_memory = get_system_memory();
 133     }
 134
 135     pc_guest_info_init(pcms);
 136
 137     if (pcmc->smbios_defaults) {
 138         /* These values are guest ABI, do not change */
 139         smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
 140                             mc->name, pcmc->smbios_legacy_mode,
 141                             pcmc->smbios_uuid_encoded,
 142                             SMBIOS_ENTRY_POINT_21);
 143     }
 144
 145     /* allocate ram and load rom/bios */
 146     if (!xen_enabled()) {
 147         pc_memory_init(pcms, get_system_memory(),
 148                        rom_memory, &ram_memory);
 149     }
 150
 151     /* irq lines */
 152     gsi_state = g_malloc0(sizeof(*gsi_state));
 153     if (kvm_ioapic_in_kernel()) {
 154         kvm_pc_setup_irq_routing(pcmc->pci_enabled);
 155         pcms->gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
 156                                        GSI_NUM_PINS);
 157     } else {
 158         pcms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 159     }
 160
 161     /* create pci host bus */
 162     q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE));
 163
 164     object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host), NULL);
 165     object_property_set_link(OBJECT(q35_host), OBJECT(ram_memory),
 166                              MCH_HOST_PROP_RAM_MEM, NULL);
 167     object_property_set_link(OBJECT(q35_host), OBJECT(pci_memory),
 168                              MCH_HOST_PROP_PCI_MEM, NULL);
 169     object_property_set_link(OBJECT(q35_host), OBJECT(get_system_memory()),
 170                              MCH_HOST_PROP_SYSTEM_MEM, NULL);
 171     object_property_set_link(OBJECT(q35_host), OBJECT(system_io),
 172                              MCH_HOST_PROP_IO_MEM, NULL);
 173     object_property_set_int(OBJECT(q35_host), pcms->below_4g_mem_size,
 174                             PCI_HOST_BELOW_4G_MEM_SIZE, NULL);
 175     object_property_set_int(OBJECT(q35_host), pcms->above_4g_mem_size,
 176                             PCI_HOST_ABOVE_4G_MEM_SIZE, NULL);
 177     /* pci */
 178     qdev_init_nofail(DEVICE(q35_host));
 179     phb = PCI_HOST_BRIDGE(q35_host);
 180     host_bus = phb->bus;
 181     /* create ISA bus */
 182     lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
 183                                           ICH9_LPC_FUNC), true,
 184                                           TYPE_ICH9_LPC_DEVICE);
 185
 186     object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
 187                              TYPE_HOTPLUG_HANDLER,
 188                              (Object **)&pcms->acpi_dev,
 189                              object_property_allow_set_link,
 190                              OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort);
 191     object_property_set_link(OBJECT(machine), OBJECT(lpc),
 192                              PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
 193
 194     ich9_lpc = ICH9_LPC_DEVICE(lpc);
 195     lpc_dev = DEVICE(lpc);
 196     for (i = 0; i < GSI_NUM_PINS; i++) {
 197         qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, pcms->gsi[i]);
 198     }
 199     pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
 200                  ICH9_LPC_NB_PIRQS);
 201     pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
 202     isa_bus = ich9_lpc->isa_bus;
 203
 204     if (kvm_pic_in_kernel()) {
 205         i8259 = kvm_i8259_init(isa_bus);
 206     } else if (xen_enabled()) {
 207         i8259 = xen_interrupt_controller_init();
 208     } else {
 209         i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq());
 210     }
 211
 212     for (i = 0; i < ISA_NUM_IRQS; i++) {
 213         gsi_state->i8259_irq[i] = i8259[i];
 214     }
 215     g_free(i8259);
 216
 217     if (pcmc->pci_enabled) {
 218         ioapic_init_gsi(gsi_state, "q35");
 219     }
 220
 221     pc_register_ferr_irq(pcms->gsi[13]);
 222
 223     assert(pcms->vmport != ON_OFF_AUTO__MAX);
 224     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
 225         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
 226     }
 227
 228     /* init basic PC hardware */
 229     pc_basic_device_init(isa_bus, pcms->gsi, &rtc_state, !mc->no_floppy,
 230                          (pcms->vmport != ON_OFF_AUTO_ON), 0xff0104);
 231
 232     /* connect pm stuff to lpc */
 233     ich9_lpc_pm_init(lpc, pc_machine_is_smm_enabled(pcms));
 234
 235     /* ahci and SATA device, for q35 1 ahci controller is built-in */
 236     ahci = pci_create_simple_multifunction(host_bus,
 237                                            PCI_DEVFN(ICH9_SATA1_DEV,
 238                                                      ICH9_SATA1_FUNC),
 239                                            true, "ich9-ahci");
 240     idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
 241     idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
 242     g_assert(MAX_SATA_PORTS == ICH_AHCI(ahci)->ahci.ports);
 243     ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
 244     ahci_ide_create_devs(ahci, hd);
 245
 246     if (machine_usb(machine)) {
 247         /* Should we create 6 UHCI according to ich9 spec? */
 248         ehci_create_ich9_with_companions(host_bus, 0x1d);
 249     }
 250
 251     /* TODO: Populate SPD eeprom data.  */
 252     smbus_eeprom_init(ich9_smb_init(host_bus,
 253                                     PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
 254                                     0xb100),
 255                       8, NULL, 0);
 256
 257     pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
 258
 259     /* the rest devices to which pci devfn is automatically assigned */
 260     pc_vga_init(isa_bus, host_bus);
 261     pc_nic_init(isa_bus, host_bus);
 262     if (pcmc->pci_enabled) {
 263         pc_pci_device_init(host_bus);
 264     }
 265
 266     if (pcms->acpi_nvdimm_state.is_enabled) {
 267         nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
 268                                pcms->fw_cfg, OBJECT(pcms));
 269     }
 270 }
 271
 272 #define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
 273     static void pc_init_##suffix(MachineState *machine) \
 274     { \
 275         void (*compat)(MachineState *m) = (compatfn); \
 276         if (compat) { \
 277             compat(machine); \
 278         } \
 279         pc_q35_init(machine); \
 280     } \
 281     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
 282
 283
 284 static void pc_q35_machine_options(MachineClass *m)
 285 {
 286     m->family = "pc_q35";
 287     m->desc = "Standard PC (Q35 + ICH9, 2009)";
 288     m->hot_add_cpu = pc_hot_add_cpu;
 289     m->units_per_default_bus = 1;
 290     m->default_machine_opts = "firmware=bios-256k.bin";
 291     m->default_display = "std";
 292     m->no_floppy = 1;
 293     m->has_dynamic_sysbus = true;
 294 }
 295
 296 static void pc_q35_2_8_machine_options(MachineClass *m)
 297 {
 298     pc_q35_machine_options(m);
 299     m->alias = "q35";
 300 }
 301
 302 DEFINE_Q35_MACHINE(v2_8, "pc-q35-2.8", NULL,
 303                    pc_q35_2_8_machine_options);
 304
 305 static void pc_q35_2_7_machine_options(MachineClass *m)
 306 {
 307     pc_q35_2_8_machine_options(m);
 308     m->alias = NULL;
 309     SET_MACHINE_COMPAT(m, PC_COMPAT_2_7);
 310 }
 311
 312 DEFINE_Q35_MACHINE(v2_7, "pc-q35-2.7", NULL,
 313                    pc_q35_2_7_machine_options);
 314
 315 static void pc_q35_2_6_machine_options(MachineClass *m)
 316 {
 317     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 318     pc_q35_2_7_machine_options(m);
 319     pcmc->legacy_cpu_hotplug = true;
 320     SET_MACHINE_COMPAT(m, PC_COMPAT_2_6);
 321 }
 322
 323 DEFINE_Q35_MACHINE(v2_6, "pc-q35-2.6", NULL,
 324                    pc_q35_2_6_machine_options);
 325
 326 static void pc_q35_2_5_machine_options(MachineClass *m)
 327 {
 328     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 329     pc_q35_2_6_machine_options(m);
 330     pcmc->save_tsc_khz = false;
 331     m->legacy_fw_cfg_order = 1;
 332     SET_MACHINE_COMPAT(m, PC_COMPAT_2_5);
 333 }
 334
 335 DEFINE_Q35_MACHINE(v2_5, "pc-q35-2.5", NULL,
 336                    pc_q35_2_5_machine_options);
 337
 338 static void pc_q35_2_4_machine_options(MachineClass *m)
 339 {
 340     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 341     pc_q35_2_5_machine_options(m);
 342     m->hw_version = "2.4.0";
 343     pcmc->broken_reserved_end = true;
 344     SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
 345 }
 346
 347 DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
 348                    pc_q35_2_4_machine_options);