[Qemu-ppc] [PATCH v3 7/7] e500: Add support for eTSEC in device tree

[Alexander Graf]

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 <address@hidden>

---

v1 -> v2:

  - fix device name (base on reg for value after @)
  - use qom properties to fetch mmio and irq props
  - remove useless interrupt-parent
  - make interrupts level triggered

v2 -> v3:

  - use new platform bus APIs
---
 hw/ppc/e500.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index f16bab7..22cfeac 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"
@@ -132,11 +133,53 @@ 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/address@hidden"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)));
-- 
1.8.1.4