exporting patch:
# HG changeset patch
# User Jiuyue Ma <majiuyue@ncic.ac.cn>
# Date 1405642428 -28800
# Node ID c7699d32ece67c116a66335005d67ccd26ea5006
# Parent  698df4b685ddd1433412c56e9bddd6e21520d583
config, x86: add ethernet support for x86 fullsystem

This patch add a IGbE_e1000 ethernet device to x86 fs system, it does
the followings:
1) add IGbE_e1000 to x86_sys.pc.ethernet,
2) connect x86_sys.pc.ethernet.pio/config/dma to x86_sys.iobus,
3) add interrupt assignment for x86_sys.pc.ethernet in MP table.

diff -r 698df4b685dd -r c7699d32ece6 configs/common/FSConfig.py
--- a/configs/common/FSConfig.py	Thu Jul 17 12:05:41 2014 +0800
+++ b/configs/common/FSConfig.py	Fri Jul 18 08:13:48 2014 +0800
@@ -424,6 +424,15 @@
     disk2.childImage(disk('linux-bigswap2.img'))
     self.pc.south_bridge.ide.disks = [disk0, disk2]
 
+    # Ethernet
+    #  - connect to PCI bus (bus_id=0)
+    #  - connect to I/O APIC use INT-A (InterruptPin=1)
+    self.pc.ethernet = IGbE_e1000(pci_bus=0, pci_dev=2, pci_func=0,
+                                  InterruptLine=10, InterruptPin=1)
+    self.pc.ethernet.pio = self.iobus.master
+    self.pc.ethernet.config = self.iobus.master
+    self.pc.ethernet.dma = self.iobus.slave
+
     # Add in a Bios information structure.
     structures = [X86SMBiosBiosInformation()]
     self.smbios_table.structures = structures
@@ -464,6 +473,16 @@
             dest_io_apic_id = io_apic.id,
             dest_io_apic_intin = 16)
     base_entries.append(pci_dev4_inta)
+    # Interrupt assignment for IGbE_e1000 (bus=0,dev=2,fun=0)
+    pci_dev2_inta = X86IntelMPIOIntAssignment(
+            interrupt_type = 'INT',
+            polarity = 'ConformPolarity',
+            trigger = 'ConformTrigger',
+            source_bus_id = 0,
+            source_bus_irq = 0 + (2 << 2),
+            dest_io_apic_id = io_apic.id,
+            dest_io_apic_intin = 10)
+    base_entries.append(pci_dev2_inta)
     def assignISAInt(irq, apicPin):
         assign_8259_to_apic = X86IntelMPIOIntAssignment(
                 interrupt_type = 'ExtInt',