[Qemu-devel] [PATCH] pseries: Instantiate USB interface when required

[David Gibson <david@gibson.dropbear.id.au>]

The pseries machine already supports the -vga std option, creating a
graphics adapter.  However, this is not very useful without being able to
add a keyboard and mouse as well.  This patch addresses this by adding
a USB interface when requested, and automatically adding a USB keyboard
and mouse when VGA is enabled.

This is a stop gap measure to get usable graphics mode on pseries while
waiting for Li Zhang's rework of USB options to go in after 1.2.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/spapr.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/spapr.c b/hw/spapr.c
index 5c8d524..5a25f6c 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -47,6 +47,7 @@
 #include "kvm_ppc.h"
 #include "pci.h"
 #include "vga-pci.h"
+#include "usb.h"
 
 #include "exec-memory.h"
 
@@ -826,6 +827,15 @@ static void ppc_spapr_init(ram_addr_t ram_size,
         spapr->has_graphics = true;
     }
 
+    if (usb_enabled) {
+        pci_create_simple(QLIST_FIRST(&spapr->phbs)->host_state.bus,
+                          -1, "pci-ohci");
+        if (spapr->has_graphics) {
+            usbdevice_create("keyboard");
+            usbdevice_create("mouse");
+        }
+    }
+
     if (spapr->rma_size < (MIN_RMA_SLOF << 20)) {
         fprintf(stderr, "qemu: pSeries SLOF firmware requires >= "
                 "%ldM guest RMA (Real Mode Area memory)\n", MIN_RMA_SLOF);
-- 
1.7.10.4