hw/display: add standalone ramfb device

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 20180613122948.18149-3-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
index e4c492ea44d79a47e30f75f7f4a784b5d48d6072..277ed872e7c58c9f6a5cd19c186b71900928aebc 100644 (file)
--- a/hw/arm/sysbus-fdt.c
+++ b/hw/arm/sysbus-fdt.c
@@ -36,6 +36,7 @@
 #include "hw/vfio/vfio-platform.h"
 #include "hw/vfio/vfio-calxeda-xgmac.h"
 #include "hw/vfio/vfio-amd-xgbe.h"
+#include "hw/display/ramfb.h"
 #include "hw/arm/fdt.h"
 
 /*
@@ -406,12 +407,18 @@ static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void *opaque)
 
 #endif /* CONFIG_LINUX */
 
+static int no_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+    return 0;
+}
+
 /* list of supported dynamic sysbus devices */
 static const NodeCreationPair add_fdt_node_functions[] = {
 #ifdef CONFIG_LINUX
     {TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node},
     {TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node},
 #endif
+    {TYPE_RAMFB_DEVICE, no_fdt_node},
     {"", NULL}, /* last element */
 };
 

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index f0a4fa004cdf9818f519316ebf4899236406f5c3..98b99cf23648e348fa054bbb429ce91093366a03 100644 (file)
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -36,6 +36,7 @@
 #include "hw/arm/virt.h"
 #include "hw/vfio/vfio-calxeda-xgmac.h"
 #include "hw/vfio/vfio-amd-xgbe.h"
+#include "hw/display/ramfb.h"
 #include "hw/devices.h"
 #include "net/net.h"
 #include "sysemu/device_tree.h"
@@ -1659,6 +1660,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = 255;
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_CALXEDA_XGMAC);
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_AMD_XGBE);
+    machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
     mc->block_default_type = IF_VIRTIO;
     mc->no_cdrom = 1;
     mc->pci_allow_0_address = true;

diff --git a/hw/display/Makefile.objs b/hw/display/Makefile.objs
index 0af04985d23732b62c84b38eff7db5b92150269d..fb8408c6d039fa2b4d5fd8fa603d1050cd5aa8d6 100644 (file)
--- a/hw/display/Makefile.objs
+++ b/hw/display/Makefile.objs
@@ -1,4 +1,5 @@
 common-obj-y += ramfb.o
+common-obj-y += ramfb-standalone.o
 
 common-obj-$(CONFIG_ADS7846) += ads7846.o
 common-obj-$(CONFIG_VGA_CIRRUS) += cirrus_vga.o

diff --git a/hw/display/ramfb-standalone.c b/hw/display/ramfb-standalone.c
new file mode 100644 (file)
index 0000000..c0d241b
--- /dev/null
+++ b/hw/display/ramfb-standalone.c
@@ -0,0 +1,62 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/loader.h"
+#include "hw/isa/isa.h"
+#include "hw/display/ramfb.h"
+#include "ui/console.h"
+#include "sysemu/sysemu.h"
+
+#define RAMFB(obj) OBJECT_CHECK(RAMFBStandaloneState, (obj), TYPE_RAMFB_DEVICE)
+
+typedef struct RAMFBStandaloneState {
+    SysBusDevice parent_obj;
+    QemuConsole *con;
+    RAMFBState *state;
+} RAMFBStandaloneState;
+
+static void display_update_wrapper(void *dev)
+{
+    RAMFBStandaloneState *ramfb = RAMFB(dev);
+
+    if (0 /* native driver active */) {
+        /* non-standalone device would run native display update here */;
+    } else {
+        ramfb_display_update(ramfb->con, ramfb->state);
+    }
+}
+
+static const GraphicHwOps wrapper_ops = {
+    .gfx_update = display_update_wrapper,
+};
+
+static void ramfb_realizefn(DeviceState *dev, Error **errp)
+{
+    RAMFBStandaloneState *ramfb = RAMFB(dev);
+
+    ramfb->con = graphic_console_init(dev, 0, &wrapper_ops, dev);
+    ramfb->state = ramfb_setup(errp);
+}
+
+static void ramfb_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
+    dc->realize = ramfb_realizefn;
+    dc->desc = "ram framebuffer standalone device";
+    dc->user_creatable = true;
+}
+
+static const TypeInfo ramfb_info = {
+    .name          = TYPE_RAMFB_DEVICE,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(RAMFBStandaloneState),
+    .class_init    = ramfb_class_initfn,
+};
+
+static void ramfb_register_types(void)
+{
+    type_register_static(&ramfb_info);
+}
+
+type_init(ramfb_register_types)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 3b87f3cedb78736dead4c2d03ab8975df7c3c0f8..e9b6f064fb210bbba717625145334ab9650f72ab 100644 (file)
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -28,6 +28,7 @@
 #include "hw/loader.h"
 #include "hw/i386/pc.h"
 #include "hw/i386/apic.h"
+#include "hw/display/ramfb.h"
 #include "hw/smbios/smbios.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_ids.h"
@@ -423,6 +424,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
     m->desc = "Standard PC (i440FX + PIIX, 1996)";
     m->default_machine_opts = "firmware=bios-256k.bin";
     m->default_display = "std";
+    machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
 }
 
 static void pc_i440fx_3_0_machine_options(MachineClass *m)

diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 087f2630f92c3782823f1b6a49991442fe8b79fe..1a73e1848afb680a20d068e911d12e620de0f4c2 100644 (file)
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -45,6 +45,7 @@
 #include "hw/i386/ich9.h"
 #include "hw/i386/amd_iommu.h"
 #include "hw/i386/intel_iommu.h"
+#include "hw/display/ramfb.h"
 #include "hw/smbios/smbios.h"
 #include "hw/ide/pci.h"
 #include "hw/ide/ahci.h"
@@ -305,6 +306,7 @@ static void pc_q35_machine_options(MachineClass *m)
     m->no_floppy = 1;
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
+    machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
     m->max_cpus = 288;
 }
 

diff --git a/include/hw/display/ramfb.h b/include/hw/display/ramfb.h
index a3d4c799420da4afe1edf7c11c0ce23ca75e77f7..b33a2c467b28824dd4aa392b9e3d76b8cdaa7673 100644 (file)
--- a/include/hw/display/ramfb.h
+++ b/include/hw/display/ramfb.h
@@ -6,4 +6,7 @@ typedef struct RAMFBState RAMFBState;
 void ramfb_display_update(QemuConsole *con, RAMFBState *s);
 RAMFBState *ramfb_setup(Error **errp);
 
+/* ramfb-standalone.c */
+#define TYPE_RAMFB_DEVICE "ramfb"
+
 #endif /* RAMFB_H */