hw/m68k: add Nubus macfb video card

This patch adds support for a graphic framebuffer device.
This device can be added as a sysbus device or as a NuBus device.

It is accessed as a framebuffer but the color palette can be set.

Co-developed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20191026164546.30020-9-laurent@vivier.eu>

1 files changed, 64 insertions, 0 deletions

diff --git a/include/hw/display/macfb.h b/include/hw/display/macfb.h
new file mode 100644
index 0000000000..26367ae2c4
--- /dev/null
+++ b/include/hw/display/macfb.h
@@ -0,0 +1,64 @@
+/*
+ * QEMU Motorola 680x0 Macintosh Video Card Emulation
+ *                 Copyright (c) 2012-2018 Laurent Vivier
+ *
+ * some parts from QEMU G364 framebuffer Emulator.
+ *                 Copyright (c) 2007-2011 Herve Poussineau
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef MACFB_H
+#define MACFB_H
+
+#include "qemu/osdep.h"
+#include "exec/memory.h"
+#include "ui/console.h"
+
+typedef struct MacfbState {
+    MemoryRegion mem_vram;
+    MemoryRegion mem_ctrl;
+    QemuConsole *con;
+
+    uint8_t *vram;
+    uint32_t vram_bit_mask;
+    uint32_t palette_current;
+    uint8_t color_palette[256 * 3];
+    uint32_t width, height; /* in pixels */
+    uint8_t depth;
+} MacfbState;
+
+#define TYPE_MACFB "sysbus-macfb"
+#define MACFB(obj) \
+    OBJECT_CHECK(MacfbSysBusState, (obj), TYPE_MACFB)
+
+typedef struct {
+    SysBusDevice busdev;
+
+    MacfbState macfb;
+} MacfbSysBusState;
+
+#define MACFB_NUBUS_DEVICE_CLASS(class) \
+    OBJECT_CLASS_CHECK(MacfbNubusDeviceClass, (class), TYPE_NUBUS_MACFB)
+#define MACFB_NUBUS_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(MacfbNubusDeviceClass, (obj), TYPE_NUBUS_MACFB)
+
+typedef struct MacfbNubusDeviceClass {
+    DeviceClass parent_class;
+
+    DeviceRealize parent_realize;
+} MacfbNubusDeviceClass;
+
+#define TYPE_NUBUS_MACFB "nubus-macfb"
+#define NUBUS_MACFB(obj) \
+    OBJECT_CHECK(MacfbNubusState, (obj), TYPE_NUBUS_MACFB)
+
+typedef struct {
+    NubusDevice busdev;
+
+    MacfbState macfb;
+} MacfbNubusState;
+
+#endif