xen_arm: Create virtio-mmio devices during initialization

In order to use virtio backends we need to allocate virtio-mmio
parameters (irq and base) and register corresponding buses.

Use the constants defined in public header arch-arm.h to be
aligned with the toolstack. So the number of current supported
virtio-mmio devices is 10.

For the interrupts triggering use already existing on Arm
device-model hypercall.

The toolstack should then insert the same amount of device nodes
into guest device-tree.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/hw/xen/xen_native.h b/include/hw/xen/xen_native.h
index 4dce905fde..a4b1aa9e5d 100644
--- a/include/hw/xen/xen_native.h
+++ b/include/hw/xen/xen_native.h
@@ -523,4 +523,20 @@ static inline int xen_set_ioreq_server_state(domid_t dom,
                                                  enable);
 }
 
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41500
+static inline int xendevicemodel_set_irq_level(xendevicemodel_handle *dmod,
+                                               domid_t domid, uint32_t irq,
+                                               unsigned int level)
+{
+    return 0;
+}
+#endif
+
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41700
+#define GUEST_VIRTIO_MMIO_BASE   xen_mk_ullong(0x02000000)
+#define GUEST_VIRTIO_MMIO_SIZE   xen_mk_ullong(0x00100000)
+#define GUEST_VIRTIO_MMIO_SPI_FIRST   33
+#define GUEST_VIRTIO_MMIO_SPI_LAST    43
+#endif
+
 #endif /* QEMU_HW_XEN_NATIVE_H */