m68k: Add NeXTcube framebuffer device emulation

#

CONFIG_AN5206=y

CONFIG_MCF5208=y

CONFIG_NEXTCUBE=y

common-obj-$(CONFIG_SM501) += sm501.o

common-obj-$(CONFIG_TCX) += tcx.o

common-obj-$(CONFIG_CG3) += cg3.o

common-obj-$(CONFIG_NEXTCUBE) += next-fb.o

obj-$(CONFIG_VGA) += vga.o

/*

 * NeXT Cube/Station Framebuffer Emulation

 *

 * Copyright (c) 2011 Bryce Lanham

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "qemu/osdep.h"

#include "qapi/error.h"

#include "ui/console.h"

#include "hw/hw.h"

#include "hw/boards.h"

#include "hw/loader.h"

#include "hw/display/framebuffer.h"

#include "ui/pixel_ops.h"

#include "hw/m68k/next-cube.h"

#define NEXTFB(obj) OBJECT_CHECK(NeXTFbState, (obj), TYPE_NEXTFB)

struct NeXTFbState {

    SysBusDevice parent_obj;

    MemoryRegion fb_mr;

    MemoryRegionSection fbsection;

    QemuConsole *con;

    uint32_t cols;

    uint32_t rows;

    int invalidate;

};

typedef struct NeXTFbState NeXTFbState;

static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s,

                             int width, int pitch)

{

    NeXTFbState *nfbstate = NEXTFB(opaque);

    static const uint32_t pal[4] = {

        0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000

    };

    uint32_t *buf = (uint32_t *)d;

    int i = 0;

    for (i = 0; i < nfbstate->cols / 4; i++) {

        int j = i * 4;

        uint8_t src = s[i];

        buf[j + 3] = pal[src & 0x3];

        src >>= 2;

        buf[j + 2] = pal[src & 0x3];

        src >>= 2;

        buf[j + 1] = pal[src & 0x3];

        src >>= 2;

        buf[j + 0] = pal[src & 0x3];

    }

}

static void nextfb_update(void *opaque)

{

    NeXTFbState *s = NEXTFB(opaque);

    int dest_width = 4;

    int src_width;

    int first = 0;

    int last  = 0;

    DisplaySurface *surface = qemu_console_surface(s->con);

    src_width = s->cols / 4 + 8;

    dest_width = s->cols * 4;

    if (s->invalidate) {

        framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0,

                                          s->cols, src_width);

        s->invalidate = 0;

    }

    framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows,

                               src_width, dest_width, 0, 1, nextfb_draw_line,

                               s, &first, &last);

    dpy_gfx_update(s->con, 0, 0, s->cols, s->rows);

}

static void nextfb_invalidate(void *opaque)

{

    NeXTFbState *s = NEXTFB(opaque);

    s->invalidate = 1;

}

static const GraphicHwOps nextfb_ops = {

    .invalidate  = nextfb_invalidate,

    .gfx_update  = nextfb_update,

};

static void nextfb_realize(DeviceState *dev, Error **errp)

{

    NeXTFbState *s = NEXTFB(dev);

    memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100,

                           &error_fatal);

    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr);

    s->invalidate = 1;

    s->cols = 1120;

    s->rows = 832;

    s->con = graphic_console_init(dev, 0, &nextfb_ops, s);

    qemu_console_resize(s->con, s->cols, s->rows);

}

static void nextfb_class_init(ObjectClass *oc, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(oc);

    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);

    dc->realize = nextfb_realize;

    /* Note: This device does not any state that we have to reset or migrate */

}

static const TypeInfo nextfb_info = {

    .name          = TYPE_NEXTFB,

    .parent        = TYPE_SYS_BUS_DEVICE,

    .instance_size = sizeof(NeXTFbState),

    .class_init    = nextfb_class_init,

};

static void nextfb_register_types(void)

{

    type_register_static(&nextfb_info);

}

type_init(nextfb_register_types)

    bool

    select COLDFIRE

    select PTIMER

config NEXTCUBE

    bool

    select FRAMEBUFFER

#ifndef NEXT_CUBE_H

#define NEXT_CUBE_H

#define TYPE_NEXTFB "next-fb"

#endif /* NEXT_CUBE_H */