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qemu-e2k/hw/i386/pc_piix.c
Paolo Bonzini 7839ff593b pc: get rid of builtin pvpanic for "-M pc-1.5" 
This causes two slight backwards-incompatibilities between "-M pc-1.5"
and 1.5's "-M pc":

(1) a fw_cfg file is removed with this patch.  This is only a problem
if migration stops the virtual machine exactly during fw_cfg enumeration.

(2) after migration, a VM created without an explicit "-device pvpanic"
will stop reporting panics to management.

The first problem only occurs if migration is done at a very, very
early point (and I'm not sure it can happen in practice for reasonable-size
VMs, since it will likely take more time to send the RAM to destination,
than it will take for BIOS to scan fw_cfg).

The second problem only occurs if the guest panics _and_ has a guest
driver _and_ management knows to look at the crash event, so it is
mostly theoretical at this point in time.

Thus keep the code simple, and pretend it was never broken.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-11-21 17:38:54 +01:00

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/*
* QEMU PC System Emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <glib.h>
#include "hw/hw.h"
#include "hw/loader.h"
#include "hw/i386/pc.h"
#include "hw/i386/apic.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_ids.h"
#include "hw/usb.h"
#include "net/net.h"
#include "hw/boards.h"
#include "hw/ide.h"
#include "sysemu/kvm.h"
#include "hw/kvm/clock.h"
#include "sysemu/sysemu.h"
#include "hw/sysbus.h"
#include "hw/cpu/icc_bus.h"
#include "sysemu/arch_init.h"
#include "sysemu/blockdev.h"
#include "hw/i2c/smbus.h"
#include "hw/xen/xen.h"
#include "exec/memory.h"
#include "exec/address-spaces.h"
#include "hw/acpi/acpi.h"
#include "cpu.h"
#ifdef CONFIG_XEN
# include <xen/hvm/hvm_info_table.h>
#endif
#define MAX_IDE_BUS 2
static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
static bool has_pci_info;
static bool has_acpi_build = true;
/* PC hardware initialisation */
static void pc_init1(QEMUMachineInitArgs *args,
int pci_enabled,
int kvmclock_enabled)
{
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *system_io = get_system_io();
int i;
ram_addr_t below_4g_mem_size, above_4g_mem_size;
PCIBus *pci_bus;
ISABus *isa_bus;
PCII440FXState *i440fx_state;
int piix3_devfn = -1;
qemu_irq *cpu_irq;
qemu_irq *gsi;
qemu_irq *i8259;
qemu_irq *smi_irq;
GSIState *gsi_state;
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
BusState *idebus[MAX_IDE_BUS];
ISADevice *rtc_state;
ISADevice *floppy;
MemoryRegion *ram_memory;
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
DeviceState *icc_bridge;
FWCfgState *fw_cfg = NULL;
PcGuestInfo *guest_info;
if (xen_enabled() && xen_hvm_init(&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(args->cpu_model, icc_bridge);
if (kvm_enabled() && kvmclock_enabled) {
kvmclock_create();
}
if (args->ram_size >= 0xe0000000) {
above_4g_mem_size = args->ram_size - 0xe0000000;
below_4g_mem_size = 0xe0000000;
} else {
above_4g_mem_size = 0;
below_4g_mem_size = args->ram_size;
}
if (pci_enabled) {
pci_memory = g_new(MemoryRegion, 1);
memory_region_init(pci_memory, NULL, "pci", INT64_MAX);
rom_memory = pci_memory;
} else {
pci_memory = NULL;
rom_memory = system_memory;
}
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
guest_info->has_acpi_build = has_acpi_build;
guest_info->has_pci_info = has_pci_info;
guest_info->isapc_ram_fw = !pci_enabled;
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
fw_cfg = pc_memory_init(system_memory,
args->kernel_filename, args->kernel_cmdline,
args->initrd_filename,
below_4g_mem_size, above_4g_mem_size,
rom_memory, &ram_memory, guest_info);
}
gsi_state = g_malloc0(sizeof(*gsi_state));
if (kvm_irqchip_in_kernel()) {
kvm_pc_setup_irq_routing(pci_enabled);
gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
GSI_NUM_PINS);
} else {
gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
}
if (pci_enabled) {
pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
system_memory, system_io, args->ram_size,
below_4g_mem_size,
0x100000000ULL - below_4g_mem_size,
above_4g_mem_size,
pci_memory, ram_memory);
} else {
pci_bus = NULL;
i440fx_state = NULL;
isa_bus = isa_bus_new(NULL, system_io);
no_hpet = 1;
}
isa_bus_irqs(isa_bus, gsi);
if (kvm_irqchip_in_kernel()) {
i8259 = kvm_i8259_init(isa_bus);
} else if (xen_enabled()) {
i8259 = xen_interrupt_controller_init();
} else {
cpu_irq = pc_allocate_cpu_irq();
i8259 = i8259_init(isa_bus, cpu_irq[0]);
}
for (i = 0; i < ISA_NUM_IRQS; i++) {
gsi_state->i8259_irq[i] = i8259[i];
}
if (pci_enabled) {
ioapic_init_gsi(gsi_state, "i440fx");
}
qdev_init_nofail(icc_bridge);
pc_register_ferr_irq(gsi[13]);
pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
/* init basic PC hardware */
pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
pc_nic_init(isa_bus, pci_bus);
ide_drive_get(hd, MAX_IDE_BUS);
if (pci_enabled) {
PCIDevice *dev;
if (xen_enabled()) {
dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
} else {
dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
}
idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
} else {
for(i = 0; i < MAX_IDE_BUS; i++) {
ISADevice *dev;
dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
ide_irq[i],
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
idebus[i] = qdev_get_child_bus(DEVICE(dev), "ide.0");
}
}
pc_cmos_init(below_4g_mem_size, above_4g_mem_size, args->boot_order,
floppy, idebus[0], idebus[1], rtc_state);
if (pci_enabled && usb_enabled(false)) {
pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
}
if (pci_enabled && acpi_enabled) {
i2c_bus *smbus;
smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
/* TODO: Populate SPD eeprom data. */
smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
gsi[9], *smi_irq,
kvm_enabled(), fw_cfg);
smbus_eeprom_init(smbus, 8, NULL, 0);
}
if (pci_enabled) {
pc_pci_device_init(pci_bus);
}
}
static void pc_init_pci(QEMUMachineInitArgs *args)
{
pc_init1(args, 1, 1);
}
static void pc_compat_1_6(QEMUMachineInitArgs *args)
{
has_pci_info = false;
rom_file_in_ram = false;
has_acpi_build = false;
}
static void pc_compat_1_5(QEMUMachineInitArgs *args)
{
pc_compat_1_6(args);
}
static void pc_compat_1_4(QEMUMachineInitArgs *args)
{
pc_compat_1_5(args);
x86_cpu_compat_set_features("n270", FEAT_1_ECX, 0, CPUID_EXT_MOVBE);
x86_cpu_compat_set_features("Westmere", FEAT_1_ECX, 0, CPUID_EXT_PCLMULQDQ);
}
static void pc_compat_1_3(QEMUMachineInitArgs *args)
{
pc_compat_1_4(args);
enable_compat_apic_id_mode();
}
/* PC compat function for pc-0.14 to pc-1.2 */
static void pc_compat_1_2(QEMUMachineInitArgs *args)
{
pc_compat_1_3(args);
disable_kvm_pv_eoi();
}
static void pc_init_pci_1_6(QEMUMachineInitArgs *args)
{
pc_compat_1_6(args);
pc_init_pci(args);
}
static void pc_init_pci_1_5(QEMUMachineInitArgs *args)
{
pc_compat_1_5(args);
pc_init_pci(args);
}
static void pc_init_pci_1_4(QEMUMachineInitArgs *args)
{
pc_compat_1_4(args);
pc_init_pci(args);
}
static void pc_init_pci_1_3(QEMUMachineInitArgs *args)
{
pc_compat_1_3(args);
pc_init_pci(args);
}
/* PC machine init function for pc-0.14 to pc-1.2 */
static void pc_init_pci_1_2(QEMUMachineInitArgs *args)
{
pc_compat_1_2(args);
pc_init_pci(args);
}
/* PC init function for pc-0.10 to pc-0.13, and reused by xenfv */
static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
{
has_pci_info = false;
has_acpi_build = false;
disable_kvm_pv_eoi();
enable_compat_apic_id_mode();
pc_init1(args, 1, 0);
}
static void pc_init_isa(QEMUMachineInitArgs *args)
{
has_pci_info = false;
has_acpi_build = false;
if (!args->cpu_model) {
args->cpu_model = "486";
}
disable_kvm_pv_eoi();
enable_compat_apic_id_mode();
pc_init1(args, 0, 1);
}
#ifdef CONFIG_XEN
static void pc_xen_hvm_init(QEMUMachineInitArgs *args)
{
PCIBus *bus;
pc_init_pci(args);
bus = pci_find_primary_bus();
if (bus != NULL) {
pci_create_simple(bus, -1, "xen-platform");
}
}
#endif
#define PC_I440FX_MACHINE_OPTIONS \
PC_DEFAULT_MACHINE_OPTIONS, \
.desc = "Standard PC (i440FX + PIIX, 1996)", \
.hot_add_cpu = pc_hot_add_cpu
#define PC_I440FX_1_7_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS
static QEMUMachine pc_i440fx_machine_v1_7 = {
PC_I440FX_1_7_MACHINE_OPTIONS,
.name = "pc-i440fx-1.7",
.alias = "pc",
.init = pc_init_pci,
.is_default = 1,
};
#define PC_I440FX_1_6_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS
static QEMUMachine pc_i440fx_machine_v1_6 = {
PC_I440FX_1_6_MACHINE_OPTIONS,
.name = "pc-i440fx-1.6",
.init = pc_init_pci_1_6,
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_6,
{ /* end of list */ }
},
};
static QEMUMachine pc_i440fx_machine_v1_5 = {
PC_I440FX_1_6_MACHINE_OPTIONS,
.name = "pc-i440fx-1.5",
.init = pc_init_pci_1_5,
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_5,
{ /* end of list */ }
},
};
#define PC_I440FX_1_4_MACHINE_OPTIONS \
PC_I440FX_1_6_MACHINE_OPTIONS, \
.hot_add_cpu = NULL
static QEMUMachine pc_i440fx_machine_v1_4 = {
PC_I440FX_1_4_MACHINE_OPTIONS,
.name = "pc-i440fx-1.4",
.init = pc_init_pci_1_4,
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_4,
{ /* end of list */ }
},
};
#define PC_COMPAT_1_3 \
PC_COMPAT_1_4, \
{\
.driver = "usb-tablet",\
.property = "usb_version",\
.value = stringify(1),\
},{\
.driver = "virtio-net-pci",\
.property = "ctrl_mac_addr",\
.value = "off", \
},{ \
.driver = "virtio-net-pci", \
.property = "mq", \
.value = "off", \
}, {\
.driver = "e1000",\
.property = "autonegotiation",\
.value = "off",\
}
static QEMUMachine pc_machine_v1_3 = {
PC_I440FX_1_4_MACHINE_OPTIONS,
.name = "pc-1.3",
.init = pc_init_pci_1_3,
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_3,
{ /* end of list */ }
},
};
#define PC_COMPAT_1_2 \
PC_COMPAT_1_3,\
{\
.driver = "nec-usb-xhci",\
.property = "msi",\
.value = "off",\
},{\
.driver = "nec-usb-xhci",\
.property = "msix",\
.value = "off",\
},{\
.driver = "ivshmem",\
.property = "use64",\
.value = "0",\
},{\
.driver = "qxl",\
.property = "revision",\
.value = stringify(3),\
},{\
.driver = "qxl-vga",\
.property = "revision",\
.value = stringify(3),\
},{\
.driver = "VGA",\
.property = "mmio",\
.value = "off",\
}
#define PC_I440FX_1_2_MACHINE_OPTIONS \
PC_I440FX_1_4_MACHINE_OPTIONS, \
.init = pc_init_pci_1_2
static QEMUMachine pc_machine_v1_2 = {
PC_I440FX_1_2_MACHINE_OPTIONS,
.name = "pc-1.2",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_2,
{ /* end of list */ }
},
};
#define PC_COMPAT_1_1 \
PC_COMPAT_1_2,\
{\
.driver = "virtio-scsi-pci",\
.property = "hotplug",\
.value = "off",\
},{\
.driver = "virtio-scsi-pci",\
.property = "param_change",\
.value = "off",\
},{\
.driver = "VGA",\
.property = "vgamem_mb",\
.value = stringify(8),\
},{\
.driver = "vmware-svga",\
.property = "vgamem_mb",\
.value = stringify(8),\
},{\
.driver = "qxl-vga",\
.property = "vgamem_mb",\
.value = stringify(8),\
},{\
.driver = "qxl",\
.property = "vgamem_mb",\
.value = stringify(8),\
},{\
.driver = "virtio-blk-pci",\
.property = "config-wce",\
.value = "off",\
}
static QEMUMachine pc_machine_v1_1 = {
PC_I440FX_1_2_MACHINE_OPTIONS,
.name = "pc-1.1",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_1,
{ /* end of list */ }
},
};
#define PC_COMPAT_1_0 \
PC_COMPAT_1_1,\
{\
.driver = TYPE_ISA_FDC,\
.property = "check_media_rate",\
.value = "off",\
}, {\
.driver = "virtio-balloon-pci",\
.property = "class",\
.value = stringify(PCI_CLASS_MEMORY_RAM),\
},{\
.driver = "apic",\
.property = "vapic",\
.value = "off",\
},{\
.driver = TYPE_USB_DEVICE,\
.property = "full-path",\
.value = "no",\
}
static QEMUMachine pc_machine_v1_0 = {
PC_I440FX_1_2_MACHINE_OPTIONS,
.name = "pc-1.0",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_1_0,
{ /* end of list */ }
},
.hw_version = "1.0",
};
#define PC_COMPAT_0_15 \
PC_COMPAT_1_0
static QEMUMachine pc_machine_v0_15 = {
PC_I440FX_1_2_MACHINE_OPTIONS,
.name = "pc-0.15",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_15,
{ /* end of list */ }
},
.hw_version = "0.15",
};
#define PC_COMPAT_0_14 \
PC_COMPAT_0_15,\
{\
.driver = "virtio-blk-pci",\
.property = "event_idx",\
.value = "off",\
},{\
.driver = "virtio-serial-pci",\
.property = "event_idx",\
.value = "off",\
},{\
.driver = "virtio-net-pci",\
.property = "event_idx",\
.value = "off",\
},{\
.driver = "virtio-balloon-pci",\
.property = "event_idx",\
.value = "off",\
}
static QEMUMachine pc_machine_v0_14 = {
PC_I440FX_1_2_MACHINE_OPTIONS,
.name = "pc-0.14",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_14,
{
.driver = "qxl",
.property = "revision",
.value = stringify(2),
},{
.driver = "qxl-vga",
.property = "revision",
.value = stringify(2),
},
{ /* end of list */ }
},
.hw_version = "0.14",
};
#define PC_COMPAT_0_13 \
PC_COMPAT_0_14,\
{\
.driver = TYPE_PCI_DEVICE,\
.property = "command_serr_enable",\
.value = "off",\
},{\
.driver = "AC97",\
.property = "use_broken_id",\
.value = stringify(1),\
}
#define PC_I440FX_0_13_MACHINE_OPTIONS \
PC_I440FX_1_2_MACHINE_OPTIONS, \
.init = pc_init_pci_no_kvmclock
static QEMUMachine pc_machine_v0_13 = {
PC_I440FX_0_13_MACHINE_OPTIONS,
.name = "pc-0.13",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_13,
{
.driver = "virtio-9p-pci",
.property = "vectors",
.value = stringify(0),
},{
.driver = "VGA",
.property = "rombar",
.value = stringify(0),
},{
.driver = "vmware-svga",
.property = "rombar",
.value = stringify(0),
},
{ /* end of list */ }
},
.hw_version = "0.13",
};
#define PC_COMPAT_0_12 \
PC_COMPAT_0_13,\
{\
.driver = "virtio-serial-pci",\
.property = "max_ports",\
.value = stringify(1),\
},{\
.driver = "virtio-serial-pci",\
.property = "vectors",\
.value = stringify(0),\
},{\
.driver = "usb-mouse",\
.property = "serial",\
.value = "1",\
},{\
.driver = "usb-tablet",\
.property = "serial",\
.value = "1",\
},{\
.driver = "usb-kbd",\
.property = "serial",\
.value = "1",\
}
static QEMUMachine pc_machine_v0_12 = {
PC_I440FX_0_13_MACHINE_OPTIONS,
.name = "pc-0.12",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_12,
{
.driver = "VGA",
.property = "rombar",
.value = stringify(0),
},{
.driver = "vmware-svga",
.property = "rombar",
.value = stringify(0),
},
{ /* end of list */ }
},
.hw_version = "0.12",
};
#define PC_COMPAT_0_11 \
PC_COMPAT_0_12,\
{\
.driver = "virtio-blk-pci",\
.property = "vectors",\
.value = stringify(0),\
},{\
.driver = TYPE_PCI_DEVICE,\
.property = "rombar",\
.value = stringify(0),\
}
static QEMUMachine pc_machine_v0_11 = {
PC_I440FX_0_13_MACHINE_OPTIONS,
.name = "pc-0.11",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_11,
{
.driver = "ide-drive",
.property = "ver",
.value = "0.11",
},{
.driver = "scsi-disk",
.property = "ver",
.value = "0.11",
},
{ /* end of list */ }
},
.hw_version = "0.11",
};
static QEMUMachine pc_machine_v0_10 = {
PC_I440FX_0_13_MACHINE_OPTIONS,
.name = "pc-0.10",
.compat_props = (GlobalProperty[]) {
PC_COMPAT_0_11,
{
.driver = "virtio-blk-pci",
.property = "class",
.value = stringify(PCI_CLASS_STORAGE_OTHER),
},{
.driver = "virtio-serial-pci",
.property = "class",
.value = stringify(PCI_CLASS_DISPLAY_OTHER),
},{
.driver = "virtio-net-pci",
.property = "vectors",
.value = stringify(0),
},{
.driver = "ide-drive",
.property = "ver",
.value = "0.10",
},{
.driver = "scsi-disk",
.property = "ver",
.value = "0.10",
},
{ /* end of list */ }
},
.hw_version = "0.10",
};
static QEMUMachine isapc_machine = {
PC_COMMON_MACHINE_OPTIONS,
.name = "isapc",
.desc = "ISA-only PC",
.init = pc_init_isa,
.max_cpus = 1,
.compat_props = (GlobalProperty[]) {
{ /* end of list */ }
},
};
#ifdef CONFIG_XEN
static QEMUMachine xenfv_machine = {
PC_COMMON_MACHINE_OPTIONS,
.name = "xenfv",
.desc = "Xen Fully-virtualized PC",
.init = pc_xen_hvm_init,
.max_cpus = HVM_MAX_VCPUS,
.default_machine_opts = "accel=xen",
.hot_add_cpu = pc_hot_add_cpu,
};
#endif
static void pc_machine_init(void)
{
qemu_register_machine(&pc_i440fx_machine_v1_7);
qemu_register_machine(&pc_i440fx_machine_v1_6);
qemu_register_machine(&pc_i440fx_machine_v1_5);
qemu_register_machine(&pc_i440fx_machine_v1_4);
qemu_register_machine(&pc_machine_v1_3);
qemu_register_machine(&pc_machine_v1_2);
qemu_register_machine(&pc_machine_v1_1);
qemu_register_machine(&pc_machine_v1_0);
qemu_register_machine(&pc_machine_v0_15);
qemu_register_machine(&pc_machine_v0_14);
qemu_register_machine(&pc_machine_v0_13);
qemu_register_machine(&pc_machine_v0_12);
qemu_register_machine(&pc_machine_v0_11);
qemu_register_machine(&pc_machine_v0_10);
qemu_register_machine(&isapc_machine);
#ifdef CONFIG_XEN
qemu_register_machine(&xenfv_machine);
#endif
}
machine_init(pc_machine_init);
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