]> Git Repo - qemu.git/blobdiff - hw/i386/pc_piix.c
i.MX: Standardize i.MX serial debug.
[qemu.git] / hw / i386 / pc_piix.c
index 6e7fa424b16d0c12787874b6f73c2e6d590c1a6f..9d4425a5b990806e2d6159354d6c50066a5623b3 100644 (file)
@@ -28,7 +28,7 @@
 #include "hw/loader.h"
 #include "hw/i386/pc.h"
 #include "hw/i386/apic.h"
-#include "hw/i386/smbios.h"
+#include "hw/smbios/smbios.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_ids.h"
 #include "hw/usb.h"
@@ -39,7 +39,6 @@
 #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/block-backend.h"
 #include "hw/i2c/smbus.h"
 #include "cpu.h"
 #include "qemu/error-report.h"
 #ifdef CONFIG_XEN
-#  include <xen/hvm/hvm_info_table.h>
+#include <xen/hvm/hvm_info_table.h>
+#include "hw/xen/xen_pt.h"
 #endif
+#include "migration/migration.h"
 
 #define MAX_IDE_BUS 2
 
@@ -75,31 +76,27 @@ static bool has_reserved_memory = true;
 static bool kvmclock_enabled = true;
 
 /* PC hardware initialisation */
-static void pc_init1(MachineState *machine)
+static void pc_init1(MachineState *machine,
+                     const char *host_type, const char *pci_type)
 {
-    PCMachineState *pc_machine = PC_MACHINE(machine);
+    PCMachineState *pcms = PC_MACHINE(machine);
     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;
+    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;
     ram_addr_t lowmem;
 
@@ -119,35 +116,30 @@ static void pc_init1(MachineState *machine)
     /* Handle the machine opt max-ram-below-4g.  It is basically doing
      * min(qemu limit, user limit).
      */
-    if (lowmem > pc_machine->max_ram_below_4g) {
-        lowmem = pc_machine->max_ram_below_4g;
+    if (lowmem > pcms->max_ram_below_4g) {
+        lowmem = pcms->max_ram_below_4g;
         if (machine->ram_size - lowmem > lowmem &&
             lowmem & ((1ULL << 30) - 1)) {
             error_report("Warning: Large machine and max_ram_below_4g(%"PRIu64
                          ") not a multiple of 1G; possible bad performance.",
-                         pc_machine->max_ram_below_4g);
+                         pcms->max_ram_below_4g);
         }
     }
 
     if (machine->ram_size >= lowmem) {
-        above_4g_mem_size = machine->ram_size - lowmem;
-        below_4g_mem_size = lowmem;
+        pcms->above_4g_mem_size = machine->ram_size - lowmem;
+        pcms->below_4g_mem_size = lowmem;
     } else {
-        above_4g_mem_size = 0;
-        below_4g_mem_size = machine->ram_size;
+        pcms->above_4g_mem_size = 0;
+        pcms->below_4g_mem_size = machine->ram_size;
     }
 
-    if (xen_enabled() && xen_hvm_init(&below_4g_mem_size, &above_4g_mem_size,
-                                      &ram_memory) != 0) {
+    if (xen_enabled() && xen_hvm_init(pcms, &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(machine->cpu_model, icc_bridge);
+    pc_cpus_init(pcms);
 
     if (kvm_enabled() && kvmclock_enabled) {
         kvmclock_create();
@@ -162,7 +154,7 @@ static void pc_init1(MachineState *machine)
         rom_memory = system_memory;
     }
 
-    guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
+    guest_info = pc_guest_info_init(pcms);
 
     guest_info->has_acpi_build = has_acpi_build;
     guest_info->legacy_acpi_table_size = legacy_acpi_table_size;
@@ -175,21 +167,17 @@ static void pc_init1(MachineState *machine)
         MachineClass *mc = MACHINE_GET_CLASS(machine);
         /* These values are guest ABI, do not change */
         smbios_set_defaults("QEMU", "Standard PC (i440FX + PIIX, 1996)",
-                            mc->name, smbios_legacy_mode, smbios_uuid_encoded);
+                            mc->name, smbios_legacy_mode, smbios_uuid_encoded,
+                            SMBIOS_ENTRY_POINT_21);
     }
 
     /* allocate ram and load rom/bios */
     if (!xen_enabled()) {
-        fw_cfg = pc_memory_init(machine, system_memory,
-                                below_4g_mem_size, above_4g_mem_size,
-                                rom_memory, &ram_memory, guest_info);
+        pc_memory_init(pcms, system_memory,
+                       rom_memory, &ram_memory, guest_info);
     } else if (machine->kernel_filename != NULL) {
         /* For xen HVM direct kernel boot, load linux here */
-        fw_cfg = xen_load_linux(machine->kernel_filename,
-                                machine->kernel_cmdline,
-                                machine->initrd_filename,
-                                below_4g_mem_size,
-                                guest_info);
+        xen_load_linux(pcms, guest_info);
     }
 
     gsi_state = g_malloc0(sizeof(*gsi_state));
@@ -202,10 +190,12 @@ static void pc_init1(MachineState *machine)
     }
 
     if (pci_enabled) {
-        pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
+        pci_bus = i440fx_init(host_type,
+                              pci_type,
+                              &i440fx_state, &piix3_devfn, &isa_bus, gsi,
                               system_memory, system_io, machine->ram_size,
-                              below_4g_mem_size,
-                              above_4g_mem_size,
+                              pcms->below_4g_mem_size,
+                              pcms->above_4g_mem_size,
                               pci_memory, ram_memory);
     } else {
         pci_bus = NULL;
@@ -220,30 +210,29 @@ static void pc_init1(MachineState *machine)
     } else if (xen_enabled()) {
         i8259 = xen_interrupt_controller_init();
     } else {
-        cpu_irq = pc_allocate_cpu_irq();
-        i8259 = i8259_init(isa_bus, cpu_irq[0]);
+        i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq());
     }
 
     for (i = 0; i < ISA_NUM_IRQS; i++) {
         gsi_state->i8259_irq[i] = i8259[i];
     }
+    g_free(i8259);
     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);
 
-    assert(pc_machine->vmport != ON_OFF_AUTO_MAX);
-    if (pc_machine->vmport == ON_OFF_AUTO_AUTO) {
-        pc_machine->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
+    assert(pcms->vmport != ON_OFF_AUTO_MAX);
+    if (pcms->vmport == ON_OFF_AUTO_AUTO) {
+        pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
     }
 
     /* init basic PC hardware */
-    pc_basic_device_init(isa_bus, gsi, &rtc_state, true, &floppy,
-                         (pc_machine->vmport != ON_OFF_AUTO_ON), 0x4);
+    pc_basic_device_init(isa_bus, gsi, &rtc_state, true,
+                         (pcms->vmport != ON_OFF_AUTO_ON), 0x4);
 
     pc_nic_init(isa_bus, pci_bus);
 
@@ -273,8 +262,7 @@ static void pc_init1(MachineState *machine)
         }
     }
 
-    pc_cmos_init(below_4g_mem_size, above_4g_mem_size, machine->boot_order,
-                 machine, floppy, idebus[0], idebus[1], rtc_state);
+    pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
 
     if (pci_enabled && usb_enabled()) {
         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
@@ -284,16 +272,17 @@ static void pc_init1(MachineState *machine)
         DeviceState *piix4_pm;
         I2CBus *smbus;
 
-        smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
+        smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);
         /* TODO: Populate SPD eeprom data.  */
         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
-                              gsi[9], *smi_irq,
-                              kvm_enabled(), fw_cfg, &piix4_pm);
+                              gsi[9], smi_irq,
+                              pc_machine_is_smm_enabled(pcms),
+                              &piix4_pm);
         smbus_eeprom_init(smbus, 8, NULL, 0);
 
         object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
                                  TYPE_HOTPLUG_HANDLER,
-                                 (Object **)&pc_machine->acpi_dev,
+                                 (Object **)&pcms->acpi_dev,
                                  object_property_allow_set_link,
                                  OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort);
         object_property_set_link(OBJECT(machine), OBJECT(piix4_pm),
@@ -305,32 +294,28 @@ static void pc_init1(MachineState *machine)
     }
 }
 
+/* Looking for a pc_compat_2_4() function? It doesn't exist.
+ * pc_compat_*() functions that run on machine-init time and
+ * change global QEMU state are deprecated. Please don't create
+ * one, and implement any pc-*-2.4 (and newer) compat code in
+ * HW_COMPAT_*, PC_COMPAT_*, or * pc_*_machine_options().
+ */
+
 static void pc_compat_2_3(MachineState *machine)
 {
+    PCMachineState *pcms = PC_MACHINE(machine);
+    savevm_skip_section_footers();
+    if (kvm_enabled()) {
+        pcms->smm = ON_OFF_AUTO_OFF;
+    }
+    global_state_set_optional();
+    savevm_skip_configuration();
 }
 
 static void pc_compat_2_2(MachineState *machine)
 {
     pc_compat_2_3(machine);
     rsdp_in_ram = false;
-    x86_cpu_compat_set_features("kvm64", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("kvm32", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Conroe", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Penryn", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Nehalem", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Westmere", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("SandyBridge", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Haswell", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Broadwell", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Opteron_G1", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Opteron_G2", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Opteron_G3", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Opteron_G4", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Opteron_G5", FEAT_1_EDX, 0, CPUID_VME);
-    x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
-    x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
-    x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
-    x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
     machine->suppress_vmdesc = true;
 }
 
@@ -340,9 +325,7 @@ static void pc_compat_2_1(MachineState *machine)
 
     pc_compat_2_2(machine);
     smbios_uuid_encoded = false;
-    x86_cpu_compat_set_features("coreduo", FEAT_1_ECX, CPUID_EXT_VMX, 0);
-    x86_cpu_compat_set_features("core2duo", FEAT_1_ECX, CPUID_EXT_VMX, 0);
-    x86_cpu_compat_kvm_no_autodisable(FEAT_8000_0001_ECX, CPUID_EXT3_SVM);
+    x86_cpu_change_kvm_default("svm", NULL);
     pcms->enforce_aligned_dimm = false;
 }
 
@@ -378,7 +361,7 @@ static void pc_compat_1_7(MachineState *machine)
     gigabyte_align = false;
     option_rom_has_mr = true;
     legacy_acpi_table_size = 6414;
-    x86_cpu_compat_kvm_no_autoenable(FEAT_1_ECX, CPUID_EXT_X2APIC);
+    x86_cpu_change_kvm_default("x2apic", NULL);
 }
 
 static void pc_compat_1_6(MachineState *machine)
@@ -396,8 +379,6 @@ static void pc_compat_1_5(MachineState *machine)
 static void pc_compat_1_4(MachineState *machine)
 {
     pc_compat_1_5(machine);
-    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(MachineState *machine)
@@ -410,7 +391,7 @@ static void pc_compat_1_3(MachineState *machine)
 static void pc_compat_1_2(MachineState *machine)
 {
     pc_compat_1_3(machine);
-    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, 1 << KVM_FEATURE_PV_EOI);
+    x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
 }
 
 /* PC compat function for pc-0.10 to pc-0.13 */
@@ -433,17 +414,32 @@ static void pc_init_isa(MachineState *machine)
     if (!machine->cpu_model) {
         machine->cpu_model = "486";
     }
-    x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, 1 << KVM_FEATURE_PV_EOI);
+    x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
     enable_compat_apic_id_mode();
-    pc_init1(machine);
+    pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
 }
 
 #ifdef CONFIG_XEN
+static void pc_xen_hvm_init_pci(MachineState *machine)
+{
+    const char *pci_type = has_igd_gfx_passthru ?
+                TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
+
+    pc_init1(machine,
+             TYPE_I440FX_PCI_HOST_BRIDGE,
+             pci_type);
+}
+
 static void pc_xen_hvm_init(MachineState *machine)
 {
     PCIBus *bus;
 
-    pc_init1(machine);
+    if (!xen_enabled()) {
+        error_report("xenfv machine requires the xen accelerator");
+        exit(1);
+    }
+
+    pc_xen_hvm_init_pci(machine);
 
     bus = pci_find_primary_bus();
     if (bus != NULL) {
@@ -459,34 +455,49 @@ static void pc_xen_hvm_init(MachineState *machine)
         if (compat) { \
             compat(machine); \
         } \
-        pc_init1(machine); \
+        pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, \
+                 TYPE_I440FX_PCI_DEVICE); \
     } \
     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
 
 static void pc_i440fx_machine_options(MachineClass *m)
 {
-    pc_default_machine_options(m);
     m->family = "pc_piix";
     m->desc = "Standard PC (i440FX + PIIX, 1996)";
     m->hot_add_cpu = pc_hot_add_cpu;
+    m->default_machine_opts = "firmware=bios-256k.bin";
+    m->default_display = "std";
 }
 
-static void pc_i440fx_2_4_machine_options(MachineClass *m)
+static void pc_i440fx_2_5_machine_options(MachineClass *m)
 {
     pc_i440fx_machine_options(m);
-    m->default_machine_opts = "firmware=bios-256k.bin";
-    m->default_display = "std";
     m->alias = "pc";
     m->is_default = 1;
 }
 
+DEFINE_I440FX_MACHINE(v2_5, "pc-i440fx-2.5", NULL,
+                      pc_i440fx_2_5_machine_options);
+
+
+static void pc_i440fx_2_4_machine_options(MachineClass *m)
+{
+    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+    pc_i440fx_2_5_machine_options(m);
+    m->alias = NULL;
+    m->is_default = 0;
+    pcmc->broken_reserved_end = true;
+    pcmc->inter_dimm_gap = false;
+    SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
+}
+
 DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4", NULL,
                       pc_i440fx_2_4_machine_options)
 
 
 static void pc_i440fx_2_3_machine_options(MachineClass *m)
 {
-    pc_i440fx_machine_options(m);
+    pc_i440fx_2_4_machine_options(m);
     m->alias = NULL;
     m->is_default = 0;
     SET_MACHINE_COMPAT(m, PC_COMPAT_2_3);
@@ -900,10 +911,121 @@ static void pc_i440fx_0_10_machine_options(MachineClass *m)
 DEFINE_I440FX_MACHINE(v0_10, "pc-0.10", pc_compat_0_13,
                       pc_i440fx_0_10_machine_options);
 
+typedef struct {
+    uint16_t gpu_device_id;
+    uint16_t pch_device_id;
+    uint8_t pch_revision_id;
+} IGDDeviceIDInfo;
+
+/* In real world different GPU should have different PCH. But actually
+ * the different PCH DIDs likely map to different PCH SKUs. We do the
+ * same thing for the GPU. For PCH, the different SKUs are going to be
+ * all the same silicon design and implementation, just different
+ * features turn on and off with fuses. The SW interfaces should be
+ * consistent across all SKUs in a given family (eg LPT). But just same
+ * features may not be supported.
+ *
+ * Most of these different PCH features probably don't matter to the
+ * Gfx driver, but obviously any difference in display port connections
+ * will so it should be fine with any PCH in case of passthrough.
+ *
+ * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
+ * scenarios, 0x9cc3 for BDW(Broadwell).
+ */
+static const IGDDeviceIDInfo igd_combo_id_infos[] = {
+    /* HSW Classic */
+    {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
+    {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
+    {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
+    {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
+    {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
+    /* HSW ULT */
+    {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
+    {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
+    {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
+    {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
+    {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
+    {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
+    /* HSW CRW */
+    {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
+    {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
+    /* HSW Server */
+    {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
+    /* HSW SRVR */
+    {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
+    /* BSW */
+    {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
+    {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
+    {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
+    {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
+    {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
+    {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
+    {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
+    {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
+    {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
+    {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
+    {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
+};
+
+static void isa_bridge_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    dc->desc        = "ISA bridge faked to support IGD PT";
+    k->vendor_id    = PCI_VENDOR_ID_INTEL;
+    k->class_id     = PCI_CLASS_BRIDGE_ISA;
+};
+
+static TypeInfo isa_bridge_info = {
+    .name          = "igd-passthrough-isa-bridge",
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(PCIDevice),
+    .class_init = isa_bridge_class_init,
+};
+
+static void pt_graphics_register_types(void)
+{
+    type_register_static(&isa_bridge_info);
+}
+type_init(pt_graphics_register_types)
+
+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
+{
+    struct PCIDevice *bridge_dev;
+    int i, num;
+    uint16_t pch_dev_id = 0xffff;
+    uint8_t pch_rev_id;
+
+    num = ARRAY_SIZE(igd_combo_id_infos);
+    for (i = 0; i < num; i++) {
+        if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
+            pch_dev_id = igd_combo_id_infos[i].pch_device_id;
+            pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
+        }
+    }
+
+    if (pch_dev_id == 0xffff) {
+        return;
+    }
+
+    /* Currently IGD drivers always need to access PCH by 1f.0. */
+    bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
+                                   "igd-passthrough-isa-bridge");
+
+    /*
+     * Note that vendor id is always PCI_VENDOR_ID_INTEL.
+     */
+    if (!bridge_dev) {
+        fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
+        return;
+    }
+    pci_config_set_device_id(bridge_dev->config, pch_dev_id);
+    pci_config_set_revision(bridge_dev->config, pch_rev_id);
+}
 
 static void isapc_machine_options(MachineClass *m)
 {
-    pc_common_machine_options(m);
     m->desc = "ISA-only PC";
     m->max_cpus = 1;
 }
@@ -915,7 +1037,6 @@ DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
 #ifdef CONFIG_XEN
 static void xenfv_machine_options(MachineClass *m)
 {
-    pc_common_machine_options(m);
     m->desc = "Xen Fully-virtualized PC";
     m->max_cpus = HVM_MAX_VCPUS;
     m->default_machine_opts = "accel=xen";
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