[Qemu-devel] [PATCH 3/5] pseries: Add support for -vga option

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

From: Ben Herrenschmidt <benh@kernel.crashing.org>

Also instantiate the USB keyboard and mouse when that option is used
(you can still use -device to create individual devices without all
the defaults)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/spapr.c |   50 +++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 49 insertions(+), 1 deletion(-)

diff --git a/hw/spapr.c b/hw/spapr.c
index 740881b..bf38823 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -46,6 +46,7 @@
 #include "kvm_ppc.h"
 #include "pci.h"
 #include "usb.h"
+#include "pc.h"
 
 #include "exec-memory.h"
 
@@ -83,6 +84,7 @@
 #define PHANDLE_XICP            0x00001111
 
 sPAPREnvironment *spapr;
+static bool spapr_has_graphics;
 
 qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num,
                             enum xics_irq_type type)
@@ -258,6 +260,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
         _FDT((fdt_property(fdt, "qemu,boot-kernel", &kprop, sizeof(kprop))));
     }
     _FDT((fdt_property_string(fdt, "qemu,boot-device", boot_device)));
+    _FDT((fdt_property_cell(fdt, "qemu,graphic-width", graphic_width)));
+    _FDT((fdt_property_cell(fdt, "qemu,graphic-height", graphic_height)));
+    _FDT((fdt_property_cell(fdt, "qemu,graphic-depth", graphic_depth)));
 
     _FDT((fdt_end_node(fdt)));
 
@@ -504,7 +509,9 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
         }
     }
 
-    spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
+    if (!spapr_has_graphics) {
+        spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
+    }
 
     _FDT((fdt_pack(fdt)));
 
@@ -557,6 +564,37 @@ static void spapr_cpu_reset(void *opaque)
     cpu_reset(CPU(cpu));
 }
 
+static bool spapr_vga_init(sPAPREnvironment *spapr)
+{
+    PCIBus *pci_bus = QLIST_FIRST(&spapr->phbs)->host_state.bus;
+
+    if (!pci_bus && (vga_interface_type != VGA_NONE)) {
+        fprintf(stderr, "Can't instantiate VGA interface without a PCI bus\n");
+        exit(1);
+    }
+
+    /* Default is nothing */
+#if 0 /* Enable this once we merge a SLOF which works with Cirrus */
+    if (cirrus_vga_enabled) {
+        pci_cirrus_vga_init(pci_bus);
+    } else
+#endif
+    if (vmsvga_enabled) {
+        fprintf(stderr, "Warning: vmware_vga not available,"
+                " using standard VGA instead\n");
+        pci_vga_init(pci_bus);
+#ifdef CONFIG_SPICE
+    } else if (qxl_enabled) {
+        pci_create_simple(pci_bus, -1, "qxl-vga");
+#endif
+    } else if (std_vga_enabled) {
+        pci_vga_init(pci_bus);
+    } else {
+        return false;
+    }
+    return true;
+}
+
 /* pSeries LPAR / sPAPR hardware init */
 static void ppc_spapr_init(ram_addr_t ram_size,
                            const char *boot_device,
@@ -711,10 +749,20 @@ static void ppc_spapr_init(ram_addr_t ram_size,
         spapr_vscsi_create(spapr->vio_bus);
     }
 
+    /* Graphics */
+    if (spapr_vga_init(spapr)) {
+        spapr_has_graphics = true;
+        usb_enabled = 1;
+    }
+
     /* USB */
     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 (rma_size < (MIN_RMA_SLOF << 20)) {
-- 
1.7.10.4