ohci: Allow sysbus version to be used as a companion

Some PPC SoCs have an EHCI with OHCI companion USB controller. To
emulate this allow the sysbus version of OHCI to be used as a companion.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

hw/usb/hcd-ohci.c

@@ -1999,7 +1999,9 @@ typedef struct {
     /*< public >*/
 
     OHCIState ohci;
+    char *masterbus;
     uint32_t num_ports;
+    uint32_t firstport;
     dma_addr_t dma_offset;
 } OHCISysBusState;
 
@@ -2007,10 +2009,15 @@ static void ohci_realize_pxa(DeviceState *dev, Error **errp)
 {
     OHCISysBusState *s = SYSBUS_OHCI(dev);
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    Error *err = NULL;
 
-    /* Cannot fail as we pass NULL for masterbus */
-    usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset, NULL, 0,
-                  &address_space_memory, &error_abort);
+    usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset,
+                  s->masterbus, s->firstport,
+                  &address_space_memory, &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
     sysbus_init_irq(sbd, &s->ohci.irq);
     sysbus_init_mmio(sbd, &s->ohci.mem);
 }
@@ -2142,7 +2149,9 @@ static const TypeInfo ohci_pci_info = {
 };
 
 static Property ohci_sysbus_properties[] = {
+    DEFINE_PROP_STRING("masterbus", OHCISysBusState, masterbus),
     DEFINE_PROP_UINT32("num-ports", OHCISysBusState, num_ports, 3),
+    DEFINE_PROP_UINT32("firstport", OHCISysBusState, firstport, 0),
     DEFINE_PROP_DMAADDR("dma-offset", OHCISysBusState, dma_offset, 0),
     DEFINE_PROP_END_OF_LIST(),
 };