hw/usb/vt82c686-uhci-pci: Use ISA instead of PCI interrupts

This device is part of a superio/ISA bridge chip and IRQs from it are
routed to an ISA interrupt. Use via_isa_set_irq() function to implement
this in a vt82c686-uhci-pci specific irq handler.

This reverts commit 422a6e8075752bc5342afd3eace23a4990dd7d98.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-ID: <ed5cdeaba7cf01eebdaa35f84c63427f4d8876b1.1701035944.git.balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/usb/vt82c686-uhci-pci.c

@@ -1,7 +1,14 @@
 #include "qemu/osdep.h"
+#include "hw/irq.h"
 #include "hw/isa/vt82c686.h"
 #include "hcd-uhci.h"
 
+static void uhci_isa_set_irq(void *opaque, int irq_num, int level)
+{
+    UHCIState *s = opaque;
+    via_isa_set_irq(&s->dev, 0, level);
+}
+
 static void usb_uhci_vt82c686b_realize(PCIDevice *dev, Error **errp)
 {
     UHCIState *s = UHCI(dev);
@@ -15,6 +22,8 @@ static void usb_uhci_vt82c686b_realize(PCIDevice *dev, Error **errp)
     pci_set_long(pci_conf + 0xc0, 0x00002000);
 
     usb_uhci_common_realize(dev, errp);
+    object_unref(s->irq);
+    s->irq = qemu_allocate_irq(uhci_isa_set_irq, s, 0);
 }
 
 static UHCIInfo uhci_info[] = {