From fdfb7f2cdb2d0ed364a8c8c538d0ece8c464b534 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Tue, 1 Jul 2014 23:30:06 +0200
Subject: [PATCH] e500: Add support for eTSEC in device tree

This patch adds support to expose eTSEC devices in the dynamically created
guest facing device tree. This allows us to expose eTSEC devices into guests
without changes in the machine file.

Because we can now tell the guest about eTSEC devices this patch allows the
user to specify eTSEC devices via -device at all.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 hw/ppc/e500.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 123379dd65..2832fc0da4 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -38,6 +38,7 @@
 #include "hw/pci-host/ppce500.h"
 #include "qemu/error-report.h"
 #include "hw/platform-bus.h"
+#include "hw/net/fsl_etsec/etsec.h"
 
 #define EPAPR_MAGIC                (0x45504150)
 #define BINARY_DEVICE_TREE_FILE    "mpc8544ds.dtb"
@@ -162,11 +163,53 @@ typedef struct PlatformDevtreeData {
     PlatformBusDevice *pbus;
 } PlatformDevtreeData;
 
+static int create_devtree_etsec(SysBusDevice *sbdev, PlatformDevtreeData *data)
+{
+    eTSEC *etsec = ETSEC_COMMON(sbdev);
+    PlatformBusDevice *pbus = data->pbus;
+    hwaddr mmio0 = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+    int irq0 = platform_bus_get_irqn(pbus, sbdev, 0);
+    int irq1 = platform_bus_get_irqn(pbus, sbdev, 1);
+    int irq2 = platform_bus_get_irqn(pbus, sbdev, 2);
+    gchar *node = g_strdup_printf("/platform/ethernet@%"PRIx64, mmio0);
+    gchar *group = g_strdup_printf("%s/queue-group", node);
+    void *fdt = data->fdt;
+
+    assert((int64_t)mmio0 >= 0);
+    assert(irq0 >= 0);
+    assert(irq1 >= 0);
+    assert(irq2 >= 0);
+
+    qemu_fdt_add_subnode(fdt, node);
+    qemu_fdt_setprop_string(fdt, node, "device_type", "network");
+    qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,etsec2");
+    qemu_fdt_setprop_string(fdt, node, "model", "eTSEC");
+    qemu_fdt_setprop(fdt, node, "local-mac-address", etsec->conf.macaddr.a, 6);
+    qemu_fdt_setprop_cells(fdt, node, "fixed-link", 0, 1, 1000, 0, 0);
+
+    qemu_fdt_add_subnode(fdt, group);
+    qemu_fdt_setprop_cells(fdt, group, "reg", mmio0, 0x1000);
+    qemu_fdt_setprop_cells(fdt, group, "interrupts",
+        data->irq_start + irq0, 0x2,
+        data->irq_start + irq1, 0x2,
+        data->irq_start + irq2, 0x2);
+
+    g_free(node);
+    g_free(group);
+
+    return 0;
+}
+
 static int sysbus_device_create_devtree(SysBusDevice *sbdev, void *opaque)
 {
     PlatformDevtreeData *data = opaque;
     bool matched = false;
 
+    if (object_dynamic_cast(OBJECT(sbdev), TYPE_ETSEC_COMMON)) {
+        create_devtree_etsec(sbdev, data);
+        matched = true;
+    }
+
     if (!matched) {
         error_report("Device %s is not supported by this machine yet.",
                      qdev_fw_name(DEVICE(sbdev)));