[Qemu-devel] [RFC PATCH 5/8] hw/arm: sysbus-fdt

[Christian Pinto <c.pinto@virtualopensystems.com>]

Added node creation for dynamically instantiated sysbus IDM device.
Support added for all ARM machines modeling dynamic sysbus devices instantiation.

Signed-off-by: Christian Pinto <c.pinto@virtualopensystems.com>
---
 hw/arm/sysbus-fdt.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
index 9d28797..e5f4321 100644
--- a/hw/arm/sysbus-fdt.c
+++ b/hw/arm/sysbus-fdt.c
@@ -28,6 +28,7 @@
 #include "sysemu/sysemu.h"
 #include "hw/vfio/vfio-platform.h"
 #include "hw/vfio/vfio-calxeda-xgmac.h"
+#include "hw/misc/idm.h"
 #include "hw/arm/fdt.h"
 
 /*
@@ -123,9 +124,68 @@ fail_reg:
     return ret;
 }
 
+/**
+ * add_idm_fdt_node
+ *
+ * Generates a node with following properties:
+ * compatible string, regs, interrupts
+ */
+static int add_idm_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+    PlatformBusFDTData *data = opaque;
+    PlatformBusDevice *pbus = data->pbus;
+    const char idm_compat[] = "idm-ipi";
+    void *fdt = data->fdt;
+    const char *parent_node = data->pbus_node_name;
+    char *nodename;
+    int ret = -1;
+    uint32_t *irq_attr, *reg_attr;
+    uint64_t mmio_base, irq_number;
+
+    mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+    nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
+        TYPE_IDM, mmio_base);
+    qemu_fdt_add_subnode(fdt, nodename);
+
+    qemu_fdt_setprop(fdt, nodename, "compatible", idm_compat,
+        sizeof(idm_compat));
+
+    /**
+     * There is only one MMIO region defined for the IDM device
+     */
+    reg_attr = g_new(uint32_t, 2);
+    reg_attr[0] = cpu_to_be32(mmio_base);
+    reg_attr[1] = cpu_to_be32(IDM_SIZE);
+    ret = qemu_fdt_setprop(fdt, nodename, "reg", reg_attr,
+        2 * sizeof(uint32_t));
+    if (ret) {
+        error_report("could not set reg property of node %s", nodename);
+        goto fail;
+    }
+
+    irq_attr = g_new(uint32_t, 3);
+    irq_number = platform_bus_get_irqn(pbus, sbdev , 0)
+                     + data->irq_start;
+    irq_attr[0] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
+    irq_attr[1] = cpu_to_be32(irq_number);
+    irq_attr[2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
+    ret = qemu_fdt_setprop(fdt, nodename, "interrupts",
+        irq_attr, 3 * sizeof(uint32_t));
+    if (ret) {
+        error_report("could not set interrupts property of node %s",
+                nodename);
+    }
+    g_free(irq_attr);
+fail:
+    g_free(reg_attr);
+    g_free(nodename);
+    return ret;
+}
+
 /* list of supported dynamic sysbus devices */
 static const NodeCreationPair add_fdt_node_functions[] = {
     {TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node},
+    {TYPE_IDM, add_idm_fdt_node},
     {"", NULL}, /* last element */
 };
 
-- 
1.9.1