x86: move more x86-generic functions out of PC files

These are needed by microvm too, so move them outside of PC-specific files.
With this patch, microvm.c need not include pc.h anymore.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 6fb01e41e7..80e33be1a2 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -34,6 +34,7 @@
 #include "sysemu/numa.h"
 #include "sysemu/replay.h"
 #include "sysemu/sysemu.h"
+#include "trace.h"
 
 #include "hw/i386/x86.h"
 #include "target/i386/cpu.h"
@@ -42,11 +43,14 @@
 #include "hw/intc/i8259.h"
 
 #include "hw/acpi/cpu_hotplug.h"
+#include "hw/irq.h"
 #include "hw/nmi.h"
 #include "hw/loader.h"
 #include "multiboot.h"
 #include "elf.h"
 #include "standard-headers/asm-x86/bootparam.h"
+#include "config-devices.h"
+#include "kvm_i386.h"
 
 #define BIOS_FILENAME "bios.bin"
 
@@ -221,6 +225,105 @@ static long get_file_size(FILE *f)
     return size;
 }
 
+/* TSC handling */
+uint64_t cpu_get_tsc(CPUX86State *env)
+{
+    return cpu_get_ticks();
+}
+
+/* IRQ handling */
+static void pic_irq_request(void *opaque, int irq, int level)
+{
+    CPUState *cs = first_cpu;
+    X86CPU *cpu = X86_CPU(cs);
+
+    trace_x86_pic_interrupt(irq, level);
+    if (cpu->apic_state && !kvm_irqchip_in_kernel()) {
+        CPU_FOREACH(cs) {
+            cpu = X86_CPU(cs);
+            if (apic_accept_pic_intr(cpu->apic_state)) {
+                apic_deliver_pic_intr(cpu->apic_state, level);
+            }
+        }
+    } else {
+        if (level) {
+            cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+        } else {
+            cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+        }
+    }
+}
+
+qemu_irq x86_allocate_cpu_irq(void)
+{
+    return qemu_allocate_irq(pic_irq_request, NULL, 0);
+}
+
+int cpu_get_pic_interrupt(CPUX86State *env)
+{
+    X86CPU *cpu = env_archcpu(env);
+    int intno;
+
+    if (!kvm_irqchip_in_kernel()) {
+        intno = apic_get_interrupt(cpu->apic_state);
+        if (intno >= 0) {
+            return intno;
+        }
+        /* read the irq from the PIC */
+        if (!apic_accept_pic_intr(cpu->apic_state)) {
+            return -1;
+        }
+    }
+
+    intno = pic_read_irq(isa_pic);
+    return intno;
+}
+
+DeviceState *cpu_get_current_apic(void)
+{
+    if (current_cpu) {
+        X86CPU *cpu = X86_CPU(current_cpu);
+        return cpu->apic_state;
+    } else {
+        return NULL;
+    }
+}
+
+void gsi_handler(void *opaque, int n, int level)
+{
+    GSIState *s = opaque;
+
+    trace_x86_gsi_interrupt(n, level);
+    if (n < ISA_NUM_IRQS) {
+        qemu_set_irq(s->i8259_irq[n], level);
+    }
+    qemu_set_irq(s->ioapic_irq[n], level);
+}
+
+void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name)
+{
+    DeviceState *dev;
+    SysBusDevice *d;
+    unsigned int i;
+
+    if (kvm_ioapic_in_kernel()) {
+        dev = qdev_create(NULL, TYPE_KVM_IOAPIC);
+    } else {
+        dev = qdev_create(NULL, TYPE_IOAPIC);
+    }
+    if (parent_name) {
+        object_property_add_child(object_resolve_path(parent_name, NULL),
+                                  "ioapic", OBJECT(dev), NULL);
+    }
+    qdev_init_nofail(dev);
+    d = SYS_BUS_DEVICE(dev);
+    sysbus_mmio_map(d, 0, IO_APIC_DEFAULT_ADDRESS);
+
+    for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+        gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i);
+    }
+}
+
 struct setup_data {
     uint64_t next;
     uint32_t type;