hw/pc_piix.c

   1 /*
   2  * QEMU PC System Emulator
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include <glib.h>
  26
  27 #include "hw.h"
  28 #include "pc.h"
  29 #include "apic.h"
  30 #include "pci.h"
  31 #include "pci_ids.h"
  32 #include "net.h"
  33 #include "boards.h"
  34 #include "ide.h"
  35 #include "kvm.h"
  36 #include "kvm/clock.h"
  37 #include "sysemu.h"
  38 #include "sysbus.h"
  39 #include "arch_init.h"
  40 #include "blockdev.h"
  41 #include "smbus.h"
  42 #include "xen.h"
  43 #include "memory.h"
  44 #include "exec-memory.h"
  45 #ifdef CONFIG_XEN
  46 #  include <xen/hvm/hvm_info_table.h>
  47 #endif
  48
  49 #define MAX_IDE_BUS 2
  50
  51 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
  52 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
  53 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
  54
  55 static void kvm_piix3_setup_irq_routing(bool pci_enabled)
  56 {
  57 #ifdef CONFIG_KVM
  58     KVMState *s = kvm_state;
  59     int ret, i;
  60
  61     if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
  62         for (i = 0; i < 8; ++i) {
  63             if (i == 2) {
  64                 continue;
  65             }
  66             kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
  67         }
  68         for (i = 8; i < 16; ++i) {
  69             kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
  70         }
  71         if (pci_enabled) {
  72             for (i = 0; i < 24; ++i) {
  73                 if (i == 0) {
  74                     kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
  75                 } else if (i != 2) {
  76                     kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, i);
  77                 }
  78             }
  79         }
  80         ret = kvm_irqchip_commit_routes(s);
  81         if (ret < 0) {
  82             hw_error("KVM IRQ routing setup failed");
  83         }
  84     }
  85 #endif /* CONFIG_KVM */
  86 }
  87
  88 static void kvm_piix3_gsi_handler(void *opaque, int n, int level)
  89 {
  90     GSIState *s = opaque;
  91
  92     if (n < ISA_NUM_IRQS) {
  93         /* Kernel will forward to both PIC and IOAPIC */
  94         qemu_set_irq(s->i8259_irq[n], level);
  95     } else {
  96         qemu_set_irq(s->ioapic_irq[n], level);
  97     }
  98 }
  99
 100 static void ioapic_init(GSIState *gsi_state)
 101 {
 102     DeviceState *dev;
 103     SysBusDevice *d;
 104     unsigned int i;
 105
 106     if (kvm_irqchip_in_kernel()) {
 107         dev = qdev_create(NULL, "kvm-ioapic");
 108     } else {
 109         dev = qdev_create(NULL, "ioapic");
 110     }
 111     /* FIXME: this should be under the piix3.  */
 112     object_property_add_child(object_resolve_path("i440fx", NULL),
 113                               "ioapic", OBJECT(dev), NULL);
 114     qdev_init_nofail(dev);
 115     d = sysbus_from_qdev(dev);
 116     sysbus_mmio_map(d, 0, 0xfec00000);
 117
 118     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
 119         gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i);
 120     }
 121 }
 122
 123 /* PC hardware initialisation */
 124 static void pc_init1(MemoryRegion *system_memory,
 125                      MemoryRegion *system_io,
 126                      ram_addr_t ram_size,
 127                      const char *boot_device,
 128                      const char *kernel_filename,
 129                      const char *kernel_cmdline,
 130                      const char *initrd_filename,
 131                      const char *cpu_model,
 132                      int pci_enabled,
 133                      int kvmclock_enabled)
 134 {
 135     int i;
 136     ram_addr_t below_4g_mem_size, above_4g_mem_size;
 137     PCIBus *pci_bus;
 138     ISABus *isa_bus;
 139     PCII440FXState *i440fx_state;
 140     int piix3_devfn = -1;
 141     qemu_irq *cpu_irq;
 142     qemu_irq *gsi;
 143     qemu_irq *i8259;
 144     qemu_irq *smi_irq;
 145     GSIState *gsi_state;
 146     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 147     BusState *idebus[MAX_IDE_BUS];
 148     ISADevice *rtc_state;
 149     ISADevice *floppy;
 150     MemoryRegion *ram_memory;
 151     MemoryRegion *pci_memory;
 152     MemoryRegion *rom_memory;
 153
 154     pc_cpus_init(cpu_model);
 155
 156     if (kvmclock_enabled) {
 157         kvmclock_create();
 158     }
 159
 160     if (ram_size >= 0xe0000000 ) {
 161         above_4g_mem_size = ram_size - 0xe0000000;
 162         below_4g_mem_size = 0xe0000000;
 163     } else {
 164         above_4g_mem_size = 0;
 165         below_4g_mem_size = ram_size;
 166     }
 167
 168     if (pci_enabled) {
 169         pci_memory = g_new(MemoryRegion, 1);
 170         memory_region_init(pci_memory, "pci", INT64_MAX);
 171         rom_memory = pci_memory;
 172     } else {
 173         pci_memory = NULL;
 174         rom_memory = system_memory;
 175     }
 176
 177     /* allocate ram and load rom/bios */
 178     if (!xen_enabled()) {
 179         pc_memory_init(system_memory,
 180                        kernel_filename, kernel_cmdline, initrd_filename,
 181                        below_4g_mem_size, above_4g_mem_size,
 182                        pci_enabled ? rom_memory : system_memory, &ram_memory);
 183     }
 184
 185     gsi_state = g_malloc0(sizeof(*gsi_state));
 186     if (kvm_irqchip_in_kernel()) {
 187         kvm_piix3_setup_irq_routing(pci_enabled);
 188         gsi = qemu_allocate_irqs(kvm_piix3_gsi_handler, gsi_state,
 189                                  GSI_NUM_PINS);
 190     } else {
 191         gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 192     }
 193
 194     if (pci_enabled) {
 195         pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
 196                               system_memory, system_io, ram_size,
 197                               below_4g_mem_size,
 198                               0x100000000ULL - below_4g_mem_size,
 199                               0x100000000ULL + above_4g_mem_size,
 200                               (sizeof(target_phys_addr_t) == 4
 201                                ? 0
 202                                : ((uint64_t)1 << 62)),
 203                               pci_memory, ram_memory);
 204     } else {
 205         pci_bus = NULL;
 206         i440fx_state = NULL;
 207         isa_bus = isa_bus_new(NULL, system_io);
 208         no_hpet = 1;
 209     }
 210     isa_bus_irqs(isa_bus, gsi);
 211
 212     if (kvm_irqchip_in_kernel()) {
 213         i8259 = kvm_i8259_init(isa_bus);
 214     } else if (xen_enabled()) {
 215         i8259 = xen_interrupt_controller_init();
 216     } else {
 217         cpu_irq = pc_allocate_cpu_irq();
 218         i8259 = i8259_init(isa_bus, cpu_irq[0]);
 219     }
 220
 221     for (i = 0; i < ISA_NUM_IRQS; i++) {
 222         gsi_state->i8259_irq[i] = i8259[i];
 223     }
 224     if (pci_enabled) {
 225         ioapic_init(gsi_state);
 226     }
 227
 228     pc_register_ferr_irq(gsi[13]);
 229
 230     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 231     if (xen_enabled()) {
 232         pci_create_simple(pci_bus, -1, "xen-platform");
 233     }
 234
 235     /* init basic PC hardware */
 236     pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
 237
 238     for(i = 0; i < nb_nics; i++) {
 239         NICInfo *nd = &nd_table[i];
 240
 241         if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
 242             pc_init_ne2k_isa(isa_bus, nd);
 243         else
 244             pci_nic_init_nofail(nd, "e1000", NULL);
 245     }
 246
 247     ide_drive_get(hd, MAX_IDE_BUS);
 248     if (pci_enabled) {
 249         PCIDevice *dev;
 250         if (xen_enabled()) {
 251             dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
 252         } else {
 253             dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
 254         }
 255         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
 256         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
 257     } else {
 258         for(i = 0; i < MAX_IDE_BUS; i++) {
 259             ISADevice *dev;
 260             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
 261                                ide_irq[i],
 262                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
 263             idebus[i] = qdev_get_child_bus(&dev->qdev, "ide.0");
 264         }
 265     }
 266
 267     audio_init(isa_bus, pci_enabled ? pci_bus : NULL);
 268
 269     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
 270                  floppy, idebus[0], idebus[1], rtc_state);
 271
 272     if (pci_enabled && usb_enabled) {
 273         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
 274     }
 275
 276     if (pci_enabled && acpi_enabled) {
 277         i2c_bus *smbus;
 278
 279         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
 280         /* TODO: Populate SPD eeprom data.  */
 281         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
 282                               gsi[9], *smi_irq,
 283                               kvm_enabled());
 284         smbus_eeprom_init(smbus, 8, NULL, 0);
 285     }
 286
 287     if (pci_enabled) {
 288         pc_pci_device_init(pci_bus);
 289     }
 290 }
 291
 292 static void pc_init_pci(ram_addr_t ram_size,
 293                         const char *boot_device,
 294                         const char *kernel_filename,
 295                         const char *kernel_cmdline,
 296                         const char *initrd_filename,
 297                         const char *cpu_model)
 298 {
 299     pc_init1(get_system_memory(),
 300              get_system_io(),
 301              ram_size, boot_device,
 302              kernel_filename, kernel_cmdline,
 303              initrd_filename, cpu_model, 1, 1);
 304 }
 305
 306 static void pc_init_pci_no_kvmclock(ram_addr_t ram_size,
 307                                     const char *boot_device,
 308                                     const char *kernel_filename,
 309                                     const char *kernel_cmdline,
 310                                     const char *initrd_filename,
 311                                     const char *cpu_model)
 312 {
 313     pc_init1(get_system_memory(),
 314              get_system_io(),
 315              ram_size, boot_device,
 316              kernel_filename, kernel_cmdline,
 317              initrd_filename, cpu_model, 1, 0);
 318 }
 319
 320 static void pc_init_isa(ram_addr_t ram_size,
 321                         const char *boot_device,
 322                         const char *kernel_filename,
 323                         const char *kernel_cmdline,
 324                         const char *initrd_filename,
 325                         const char *cpu_model)
 326 {
 327     if (cpu_model == NULL)
 328         cpu_model = "486";
 329     pc_init1(get_system_memory(),
 330              get_system_io(),
 331              ram_size, boot_device,
 332              kernel_filename, kernel_cmdline,
 333              initrd_filename, cpu_model, 0, 1);
 334 }
 335
 336 #ifdef CONFIG_XEN
 337 static void pc_xen_hvm_init(ram_addr_t ram_size,
 338                             const char *boot_device,
 339                             const char *kernel_filename,
 340                             const char *kernel_cmdline,
 341                             const char *initrd_filename,
 342                             const char *cpu_model)
 343 {
 344     if (xen_hvm_init() != 0) {
 345         hw_error("xen hardware virtual machine initialisation failed");
 346     }
 347     pc_init_pci_no_kvmclock(ram_size, boot_device,
 348                             kernel_filename, kernel_cmdline,
 349                             initrd_filename, cpu_model);
 350     xen_vcpu_init();
 351 }
 352 #endif
 353
 354 static QEMUMachine pc_machine_v1_1 = {
 355     .name = "pc-1.1",
 356     .alias = "pc",
 357     .desc = "Standard PC",
 358     .init = pc_init_pci,
 359     .max_cpus = 255,
 360     .is_default = 1,
 361 };
 362
 363 #define PC_COMPAT_1_0 \
 364         {\
 365             .driver   = "pc-sysfw",\
 366             .property = "rom_only",\
 367             .value    = stringify(1),\
 368         }, {\
 369             .driver   = "isa-fdc",\
 370             .property = "check_media_rate",\
 371             .value    = "off",\
 372         }, {\
 373             .driver   = "virtio-balloon-pci",\
 374             .property = "class",\
 375             .value    = stringify(PCI_CLASS_MEMORY_RAM),\
 376         },{\
 377             .driver   = "apic",\
 378             .property = "vapic",\
 379             .value    = "off",\
 380         },{\
 381             .driver   = "USB",\
 382             .property = "full-path",\
 383             .value    = "no",\
 384         }
 385
 386 static QEMUMachine pc_machine_v1_0 = {
 387     .name = "pc-1.0",
 388     .desc = "Standard PC",
 389     .init = pc_init_pci,
 390     .max_cpus = 255,
 391     .compat_props = (GlobalProperty[]) {
 392         PC_COMPAT_1_0,
 393         { /* end of list */ }
 394     },
 395 };
 396
 397 #define PC_COMPAT_0_15 \
 398         PC_COMPAT_1_0
 399
 400 static QEMUMachine pc_machine_v0_15 = {
 401     .name = "pc-0.15",
 402     .desc = "Standard PC",
 403     .init = pc_init_pci,
 404     .max_cpus = 255,
 405     .compat_props = (GlobalProperty[]) {
 406         PC_COMPAT_0_15,
 407         { /* end of list */ }
 408     },
 409 };
 410
 411 #define PC_COMPAT_0_14 \
 412         PC_COMPAT_0_15,\
 413         {\
 414             .driver   = "virtio-blk-pci",\
 415             .property = "event_idx",\
 416             .value    = "off",\
 417         },{\
 418             .driver   = "virtio-serial-pci",\
 419             .property = "event_idx",\
 420             .value    = "off",\
 421         },{\
 422             .driver   = "virtio-net-pci",\
 423             .property = "event_idx",\
 424             .value    = "off",\
 425         },{\
 426             .driver   = "virtio-balloon-pci",\
 427             .property = "event_idx",\
 428             .value    = "off",\
 429         }
 430
 431 static QEMUMachine pc_machine_v0_14 = {
 432     .name = "pc-0.14",
 433     .desc = "Standard PC",
 434     .init = pc_init_pci,
 435     .max_cpus = 255,
 436     .compat_props = (GlobalProperty[]) {
 437         PC_COMPAT_0_14,
 438         {
 439             .driver   = "qxl",
 440             .property = "revision",
 441             .value    = stringify(2),
 442         },{
 443             .driver   = "qxl-vga",
 444             .property = "revision",
 445             .value    = stringify(2),
 446         },
 447         { /* end of list */ }
 448     },
 449 };
 450
 451 #define PC_COMPAT_0_13 \
 452         PC_COMPAT_0_14,\
 453         {\
 454             .driver   = "PCI",\
 455             .property = "command_serr_enable",\
 456             .value    = "off",\
 457         },{\
 458             .driver   = "AC97",\
 459             .property = "use_broken_id",\
 460             .value    = stringify(1),\
 461         }
 462
 463 static QEMUMachine pc_machine_v0_13 = {
 464     .name = "pc-0.13",
 465     .desc = "Standard PC",
 466     .init = pc_init_pci_no_kvmclock,
 467     .max_cpus = 255,
 468     .compat_props = (GlobalProperty[]) {
 469         PC_COMPAT_0_13,
 470         {
 471             .driver   = "virtio-9p-pci",
 472             .property = "vectors",
 473             .value    = stringify(0),
 474         },{
 475             .driver   = "VGA",
 476             .property = "rombar",
 477             .value    = stringify(0),
 478         },{
 479             .driver   = "vmware-svga",
 480             .property = "rombar",
 481             .value    = stringify(0),
 482         },
 483         { /* end of list */ }
 484     },
 485 };
 486
 487 #define PC_COMPAT_0_12 \
 488         PC_COMPAT_0_13,\
 489         {\
 490             .driver   = "virtio-serial-pci",\
 491             .property = "max_ports",\
 492             .value    = stringify(1),\
 493         },{\
 494             .driver   = "virtio-serial-pci",\
 495             .property = "vectors",\
 496             .value    = stringify(0),\
 497         }
 498
 499 static QEMUMachine pc_machine_v0_12 = {
 500     .name = "pc-0.12",
 501     .desc = "Standard PC",
 502     .init = pc_init_pci_no_kvmclock,
 503     .max_cpus = 255,
 504     .compat_props = (GlobalProperty[]) {
 505         PC_COMPAT_0_12,
 506         {
 507             .driver   = "VGA",
 508             .property = "rombar",
 509             .value    = stringify(0),
 510         },{
 511             .driver   = "vmware-svga",
 512             .property = "rombar",
 513             .value    = stringify(0),
 514         },
 515         { /* end of list */ }
 516     }
 517 };
 518
 519 #define PC_COMPAT_0_11 \
 520         PC_COMPAT_0_12,\
 521         {\
 522             .driver   = "virtio-blk-pci",\
 523             .property = "vectors",\
 524             .value    = stringify(0),\
 525         }
 526
 527 static QEMUMachine pc_machine_v0_11 = {
 528     .name = "pc-0.11",
 529     .desc = "Standard PC, qemu 0.11",
 530     .init = pc_init_pci_no_kvmclock,
 531     .max_cpus = 255,
 532     .compat_props = (GlobalProperty[]) {
 533         PC_COMPAT_0_11,
 534         {
 535             .driver   = "ide-drive",
 536             .property = "ver",
 537             .value    = "0.11",
 538         },{
 539             .driver   = "scsi-disk",
 540             .property = "ver",
 541             .value    = "0.11",
 542         },
 543         { /* end of list */ }
 544     }
 545 };
 546
 547 static QEMUMachine pc_machine_v0_10 = {
 548     .name = "pc-0.10",
 549     .desc = "Standard PC, qemu 0.10",
 550     .init = pc_init_pci_no_kvmclock,
 551     .max_cpus = 255,
 552     .compat_props = (GlobalProperty[]) {
 553         PC_COMPAT_0_11,
 554         {
 555             .driver   = "virtio-blk-pci",
 556             .property = "class",
 557             .value    = stringify(PCI_CLASS_STORAGE_OTHER),
 558         },{
 559             .driver   = "virtio-serial-pci",
 560             .property = "class",
 561             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
 562         },{
 563             .driver   = "virtio-net-pci",
 564             .property = "vectors",
 565             .value    = stringify(0),
 566         },{
 567             .driver   = "ide-drive",
 568             .property = "ver",
 569             .value    = "0.10",
 570         },{
 571             .driver   = "scsi-disk",
 572             .property = "ver",
 573             .value    = "0.10",
 574         },
 575         { /* end of list */ }
 576     },
 577 };
 578
 579 static QEMUMachine isapc_machine = {
 580     .name = "isapc",
 581     .desc = "ISA-only PC",
 582     .init = pc_init_isa,
 583     .max_cpus = 1,
 584     .compat_props = (GlobalProperty[]) {
 585         {
 586             .driver   = "pc-sysfw",
 587             .property = "rom_only",
 588             .value    = stringify(1),
 589         },
 590         { /* end of list */ }
 591     },
 592 };
 593
 594 #ifdef CONFIG_XEN
 595 static QEMUMachine xenfv_machine = {
 596     .name = "xenfv",
 597     .desc = "Xen Fully-virtualized PC",
 598     .init = pc_xen_hvm_init,
 599     .max_cpus = HVM_MAX_VCPUS,
 600     .default_machine_opts = "accel=xen",
 601 };
 602 #endif
 603
 604 static void pc_machine_init(void)
 605 {
 606     qemu_register_machine(&pc_machine_v1_1);
 607     qemu_register_machine(&pc_machine_v1_0);
 608     qemu_register_machine(&pc_machine_v0_15);
 609     qemu_register_machine(&pc_machine_v0_14);
 610     qemu_register_machine(&pc_machine_v0_13);
 611     qemu_register_machine(&pc_machine_v0_12);
 612     qemu_register_machine(&pc_machine_v0_11);
 613     qemu_register_machine(&pc_machine_v0_10);
 614     qemu_register_machine(&isapc_machine);
 615 #ifdef CONFIG_XEN
 616     qemu_register_machine(&xenfv_machine);
 617 #endif
 618 }
 619
 620 machine_init(pc_machine_init);