[PATCH v5 33/47] hw/arm/xlnx-versal: reconnect the CRL to the other devices

[Luc Michel <luc.michel@amd.com>]

The CRL connects to various devices through link properties to be able
to reset them. The connections were dropped during the SoC refactoring.
Reintroduce them now.

Rely on the QOM tree to retrieve the devices to connect. The component
parts of the device names are chosen to match the properties on the CRL.

Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
---
 hw/arm/xlnx-versal.c | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
index 940233aad06..02119d13533 100644
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -1474,21 +1474,50 @@ static void versal_create_cfu(Versal *s, const struct VersalCfuMap *map)
     sysbus_realize_and_unref(sbd, &error_fatal);
     memory_region_add_subregion(&s->mr_ps, map->cfu_sfr,
                                 sysbus_mmio_get_region(sbd, 0));
 }
 
+static inline void crl_connect_dev(Object *crl, Object *dev)
+{
+    const char *prop = object_get_canonical_path_component(dev);
+
+    /* The component part of the device path matches the CRL property name */
+    object_property_set_link(crl, prop, dev, &error_abort);
+}
+
+static inline void crl_connect_dev_by_name(Versal *s, Object *crl,
+                                           const char *name, size_t num)
+{
+    size_t i;
+
+    for (i = 0; i < num; i++) {
+        Object *dev = versal_get_child_idx(s, name, i);
+
+        crl_connect_dev(crl, dev);
+    }
+}
+
 static inline void versal_create_crl(Versal *s)
 {
     const VersalMap *map;
     const char *crl_class;
     DeviceState *dev;
+    Object *obj;
 
     map = versal_get_map(s);
 
     crl_class = TYPE_XLNX_VERSAL_CRL;
     dev = qdev_new(crl_class);
-    object_property_add_child(OBJECT(s), "crl", OBJECT(dev));
+    obj = OBJECT(dev);
+    object_property_add_child(OBJECT(s), "crl", obj);
+
+    crl_connect_dev_by_name(s, obj, "rpu-cluster/rpu",
+                            map->rpu.num_cluster * map->rpu.num_core);
+    crl_connect_dev_by_name(s, obj, map->zdma[0].name, map->zdma[0].num_chan);
+    crl_connect_dev_by_name(s, obj, "uart", map->num_uart);
+    crl_connect_dev_by_name(s, obj, "gem", map->num_gem);
+    crl_connect_dev_by_name(s, obj, "usb", map->num_usb);
 
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_abort);
 
     memory_region_add_subregion(&s->mr_ps, map->crl.addr,
                                 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
-- 
2.50.1