[Qemu-devel] [PULL 0/4] Vga 20180618 patches

[Qemu-devel] [PULL 0/4] Vga 20180618 patches

[Gerd Hoffmann]

The following changes since commit 2ef2f16781af9dee6ba6517755e9073ba5799fa2:

  Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20180615a' into staging (2018-06-15 18:13:35 +0100)

are available in the git repository at:

  git://git.kraxel.org/qemu tags/vga-20180618-pull-request

for you to fetch changes up to 58d632c7ce66c272868b057491cec7ee5a6a1050:

  Add ramfb MAINTAINERS entry (2018-06-18 11:24:25 +0200)

----------------------------------------------------------------
vga: add ramfb, print virglrenderer version

----------------------------------------------------------------

Gerd Hoffmann (3):
  hw/display: add ramfb, a simple boot framebuffer living in guest ram
  hw/display: add standalone ramfb device
  Add ramfb MAINTAINERS entry

Marc-André Lureau (1):
  configure: print virglrenderer version

 configure                     |  3 +-
 include/hw/display/ramfb.h    | 12 ++++++
 hw/arm/sysbus-fdt.c           |  7 ++++
 hw/arm/virt.c                 |  2 +
 hw/display/ramfb-standalone.c | 62 ++++++++++++++++++++++++++++
 hw/display/ramfb.c            | 95 +++++++++++++++++++++++++++++++++++++++++++
 hw/i386/pc_piix.c             |  2 +
 hw/i386/pc_q35.c              |  2 +
 MAINTAINERS                   |  6 +++
 hw/display/Makefile.objs      |  3 ++
 10 files changed, 193 insertions(+), 1 deletion(-)
 create mode 100644 include/hw/display/ramfb.h
 create mode 100644 hw/display/ramfb-standalone.c
 create mode 100644 hw/display/ramfb.c

-- 
2.9.3

[Qemu-devel] [PULL 1/4] configure: print virglrenderer version

[Gerd Hoffmann]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Message-id: 20180525153609.13187-1-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 configure | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index a8c4094c87..6b2bcb3a0d 100755
--- a/configure
+++ b/configure
@@ -4599,6 +4599,7 @@ int main(void) { virgl_renderer_poll(); return 0; }
 EOF
   virgl_cflags=$($pkg_config --cflags virglrenderer 2>/dev/null)
   virgl_libs=$($pkg_config --libs virglrenderer 2>/dev/null)
+  virgl_version=$($pkg_config --modversion virglrenderer 2>/dev/null)
   if $pkg_config virglrenderer >/dev/null 2>&1 && \
      compile_prog "$virgl_cflags" "$virgl_libs" ; then
     virglrenderer="yes"
@@ -5827,7 +5828,7 @@ echo "nettle            $nettle $(echo_version $nettle $nettle_version)"
 echo "nettle kdf        $nettle_kdf"
 echo "libtasn1          $tasn1"
 echo "curses support    $curses"
-echo "virgl support     $virglrenderer"
+echo "virgl support     $virglrenderer $(echo_version $virglrenderer $virgl_version)"
 echo "curl support      $curl"
 echo "mingw32 support   $mingw32"
 echo "Audio drivers     $audio_drv_list"
-- 
2.9.3

[Qemu-devel] [PULL 2/4] hw/display: add ramfb, a simple boot framebuffer living in guest ram

[Gerd Hoffmann]

The boot framebuffer is expected to be configured by the firmware, so it
uses fw_cfg as interface.  Initialization goes as follows:

  (1) Check whenever etc/ramfb is present.
  (2) Allocate framebuffer from RAM.
  (3) Fill struct RAMFBCfg, write it to etc/ramfb.

Done.  You can write stuff to the framebuffer now, and it should appear
automagically on the screen.

Note that this isn't very efficient because it does a full display
update on each refresh.  No dirty tracking.  Dirty tracking would have
to be active for the whole ram slot, so that wouldn't be very efficient
either.  For a boot display which is active for a short time only this
isn't a big deal.  As permanent guest display something better should be
used (if possible).

This is the ramfb core code.  Some windup is needed for display devices
which want have a ramfb boot display.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 20180613122948.18149-2-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 include/hw/display/ramfb.h |  9 +++++
 hw/display/ramfb.c         | 95 ++++++++++++++++++++++++++++++++++++++++++++++
 hw/display/Makefile.objs   |  2 +
 3 files changed, 106 insertions(+)
 create mode 100644 include/hw/display/ramfb.h
 create mode 100644 hw/display/ramfb.c

diff --git a/include/hw/display/ramfb.h b/include/hw/display/ramfb.h
new file mode 100644
index 0000000000..a3d4c79942
--- /dev/null
+++ b/include/hw/display/ramfb.h
@@ -0,0 +1,9 @@
+#ifndef RAMFB_H
+#define RAMFB_H
+
+/* ramfb.c */
+typedef struct RAMFBState RAMFBState;
+void ramfb_display_update(QemuConsole *con, RAMFBState *s);
+RAMFBState *ramfb_setup(Error **errp);
+
+#endif /* RAMFB_H */
diff --git a/hw/display/ramfb.c b/hw/display/ramfb.c
new file mode 100644
index 0000000000..6867bce8ae
--- /dev/null
+++ b/hw/display/ramfb.c
@@ -0,0 +1,95 @@
+/*
+ * early boot framebuffer in guest ram
+ * configured using fw_cfg
+ *
+ * Copyright Red Hat, Inc. 2017
+ *
+ * Author:
+ *     Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/loader.h"
+#include "hw/display/ramfb.h"
+#include "ui/console.h"
+#include "sysemu/sysemu.h"
+
+struct QEMU_PACKED RAMFBCfg {
+    uint64_t addr;
+    uint32_t fourcc;
+    uint32_t flags;
+    uint32_t width;
+    uint32_t height;
+    uint32_t stride;
+};
+
+struct RAMFBState {
+    DisplaySurface *ds;
+    uint32_t width, height;
+    struct RAMFBCfg cfg;
+};
+
+static void ramfb_fw_cfg_write(void *dev, off_t offset, size_t len)
+{
+    RAMFBState *s = dev;
+    void *framebuffer;
+    uint32_t stride, fourcc, format;
+    hwaddr addr, length;
+
+    s->width  = be32_to_cpu(s->cfg.width);
+    s->height = be32_to_cpu(s->cfg.height);
+    stride    = be32_to_cpu(s->cfg.stride);
+    fourcc    = be32_to_cpu(s->cfg.fourcc);
+    addr      = be64_to_cpu(s->cfg.addr);
+    length    = stride * s->height;
+    format    = qemu_drm_format_to_pixman(fourcc);
+
+    fprintf(stderr, "%s: %dx%d @ 0x%" PRIx64 "\n", __func__,
+            s->width, s->height, addr);
+    framebuffer = address_space_map(&address_space_memory,
+                                    addr, &length, false,
+                                    MEMTXATTRS_UNSPECIFIED);
+    if (!framebuffer || length < stride * s->height) {
+        s->width = 0;
+        s->height = 0;
+        return;
+    }
+    s->ds = qemu_create_displaysurface_from(s->width, s->height,
+                                            format, stride, framebuffer);
+}
+
+void ramfb_display_update(QemuConsole *con, RAMFBState *s)
+{
+    if (!s->width || !s->height) {
+        return;
+    }
+
+    if (s->ds) {
+        dpy_gfx_replace_surface(con, s->ds);
+        s->ds = NULL;
+    }
+
+    /* simple full screen update */
+    dpy_gfx_update_full(con);
+}
+
+RAMFBState *ramfb_setup(Error **errp)
+{
+    FWCfgState *fw_cfg = fw_cfg_find();
+    RAMFBState *s;
+
+    if (!fw_cfg || !fw_cfg->dma_enabled) {
+        error_setg(errp, "ramfb device requires fw_cfg with DMA");
+        return NULL;
+    }
+
+    s = g_new0(RAMFBState, 1);
+
+    fw_cfg_add_file_callback(fw_cfg, "etc/ramfb",
+                             NULL, ramfb_fw_cfg_write, s,
+                             &s->cfg, sizeof(s->cfg), false);
+    return s;
+}
diff --git a/hw/display/Makefile.objs b/hw/display/Makefile.objs
index b5d97ab26d..0af04985d2 100644
--- a/hw/display/Makefile.objs
+++ b/hw/display/Makefile.objs
@@ -1,3 +1,5 @@
+common-obj-y += ramfb.o
+
 common-obj-$(CONFIG_ADS7846) += ads7846.o
 common-obj-$(CONFIG_VGA_CIRRUS) += cirrus_vga.o
 common-obj-$(CONFIG_G364FB) += g364fb.o
-- 
2.9.3

[Qemu-devel] [PULL 3/4] hw/display: add standalone ramfb device

[Gerd Hoffmann]

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>
---
 include/hw/display/ramfb.h    |  3 +++
 hw/arm/sysbus-fdt.c           |  7 +++++
 hw/arm/virt.c                 |  2 ++
 hw/display/ramfb-standalone.c | 62 +++++++++++++++++++++++++++++++++++++++++++
 hw/i386/pc_piix.c             |  2 ++
 hw/i386/pc_q35.c              |  2 ++
 hw/display/Makefile.objs      |  1 +
 7 files changed, 79 insertions(+)
 create mode 100644 hw/display/ramfb-standalone.c

diff --git a/include/hw/display/ramfb.h b/include/hw/display/ramfb.h
index a3d4c79942..b33a2c467b 100644
--- 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 */
diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
index e4c492ea44..277ed872e7 100644
--- 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 f0a4fa004c..98b99cf236 100644
--- 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/ramfb-standalone.c b/hw/display/ramfb-standalone.c
new file mode 100644
index 0000000000..c0d241ba01
--- /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 3b87f3cedb..e9b6f064fb 100644
--- 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 087f2630f9..1a73e1848a 100644
--- 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/hw/display/Makefile.objs b/hw/display/Makefile.objs
index 0af04985d2..fb8408c6d0 100644
--- 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
-- 
2.9.3

[Qemu-devel] [PULL 4/4] Add ramfb MAINTAINERS entry

[Gerd Hoffmann]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 20180613122948.18149-5-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 MAINTAINERS | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 0fb5f38f9f..da91501c7a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1331,6 +1331,12 @@ F: hw/display/bochs-display.c
 F: include/hw/display/vga.h
 F: include/hw/display/bochs-vbe.h
 
+ramfb
+M: Gerd Hoffmann <kraxel@redhat.com>
+S: Maintained
+F: hw/display/ramfb*.c
+F: include/hw/display/ramfb.h
+
 virtio-gpu
 M: Gerd Hoffmann <kraxel@redhat.com>
 S: Maintained
-- 
2.9.3

Re: [Qemu-devel] [PULL 0/4] Vga 20180618 patches

[Peter Maydell]

On 18 June 2018 at 10:57, Gerd Hoffmann <kraxel@redhat.com> wrote:
> The following changes since commit 2ef2f16781af9dee6ba6517755e9073ba5799fa2:
>
>   Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20180615a' into staging (2018-06-15 18:13:35 +0100)
>
> are available in the git repository at:
>
>   git://git.kraxel.org/qemu tags/vga-20180618-pull-request
>
> for you to fetch changes up to 58d632c7ce66c272868b057491cec7ee5a6a1050:
>
>   Add ramfb MAINTAINERS entry (2018-06-18 11:24:25 +0200)
>
> ----------------------------------------------------------------
> vga: add ramfb, print virglrenderer version
>
> ----------------------------------------------------------------
>

Applied, thanks.

-- PMM