From 5ecb77ec9f6f1cfb02b23cdb9a1eb2eca905b12e Mon Sep 17 00:00:00 2001
From: tjin <address@hidden>
Date: Tue, 2 Apr 2019 14:48:25 +0800
Subject: [PATCH] adds a virtio_net netcard for mips boston board

Adds a network card for boston to make it convenient for users who are verifying network related functionalities on this board.
As the linux kernel has already supported virtio_net, now add a virtio netcard for boston, to make virtio work properly, please:
1. set virtio net options in linux kernel, saying CONFIG_VIRTIO && CONFIG_VIRTIO_PCI && CONFIG_VIRTIO_NET
2. specify model=virtio when you start boston in qemu.

Signed-off-by: tjin <address@hidden>
---
 hw/mips/boston.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/hw/mips/boston.c b/hw/mips/boston.c
index e5bab3c..97c1728 100644
--- a/hw/mips/boston.c
+++ b/hw/mips/boston.c
@@ -32,6 +32,7 @@
 #include "hw/mips/cps.h"
 #include "hw/mips/cpudevs.h"
 #include "hw/pci-host/xilinx-pcie.h"
+#include "hw/virtio/virtio-pci.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "qemu/log.h"
@@ -422,6 +423,23 @@ xilinx_pcie_init(MemoryRegion *sys_mem, uint32_t bus_nr,
     return XILINX_PCIE_HOST(dev);
 }
 
+/* Plug network card  in pcie slot.*/
+static void network_init(PCIBus *bus)
+{
+    NICInfo *nd = &nd_table[0];
+    PCIDevice *eth;
+
+    /* Please set CONFIG_VIRTIO && CONFIG_VIRTIO_PCI && CONFIG_VIRTIO_NET */
+    /* of Linux kernel. */
+    if (nd->model && strcmp(nd->model, "virtio") == 0) {
+        eth = pci_create(bus,
+                        PCI_DEVFN(0, 1), "virtio-net-pci");
+
+        qdev_set_nic_properties(&eth->qdev, &nd_table[0]);
+        qdev_init_nofail(&eth->qdev);
+    }
+}
+
 static void boston_mach_init(MachineState *machine)
 {
     DeviceState *dev;
@@ -545,6 +563,9 @@ static void boston_mach_init(MachineState *machine)
         error_printf("Please provide either a -kernel or -bios argument\n");
         exit(1);
     }
+
+    /* Network card */
+    network_init(&PCI_BRIDGE(&pcie2->root)->sec_bus);
 }
 
 static void boston_mach_class_init(MachineClass *mc)
-- 
2.7.4