pc, pc_piix: split out pc nic initialization

Factor out pc nic initialization.
This simplifies the pc initialization and will reduce the code
duplication of q35 pc initialization.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NJason Baron <jbaron@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/pc.c

@@ -1058,6 +1058,21 @@ void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
     *floppy = fdctrl_init_isa(isa_bus, fd);
 }
 
+void pc_nic_init(ISABus *isa_bus, PCIBus *pci_bus)
+{
+    int i;
+
+    for (i = 0; i < nb_nics; i++) {
+        NICInfo *nd = &nd_table[i];
+
+        if (!pci_bus || (nd->model && strcmp(nd->model, "ne2k_isa") == 0)) {
+            pc_init_ne2k_isa(isa_bus, nd);
+        } else {
+            pci_nic_init_nofail(nd, "e1000", NULL);
+        }
+    }
+}
+
 void pc_pci_device_init(PCIBus *pci_bus)
 {
     int max_bus;

hw/pc.h

@@ -98,6 +98,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
                   const char *boot_device,
                   ISADevice *floppy, BusState *ide0, BusState *ide1,
                   ISADevice *s);
+void pc_nic_init(ISABus *isa_bus, PCIBus *pci_bus);
 void pc_pci_device_init(PCIBus *pci_bus);
 
 typedef void (*cpu_set_smm_t)(int smm, void *arg);

hw/pc_piix.c

@@ -234,14 +234,7 @@ static void pc_init1(MemoryRegion *system_memory,
     /* init basic PC hardware */
     pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
 
-    for(i = 0; i < nb_nics; i++) {
-        NICInfo *nd = &nd_table[i];
-
-        if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
-            pc_init_ne2k_isa(isa_bus, nd);
-        else
-            pci_nic_init_nofail(nd, "e1000", NULL);
-    }
+    pc_nic_init(isa_bus, pci_bus);
 
     ide_drive_get(hd, MAX_IDE_BUS);
     if (pci_enabled) {