diff options
Diffstat (limited to 'hw/display/next-fb.c')
| -rw-r--r-- | hw/display/next-fb.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/hw/display/next-fb.c b/hw/display/next-fb.c new file mode 100644 index 0000000000..2b726a10f8 --- /dev/null +++ b/hw/display/next-fb.c @@ -0,0 +1,146 @@ +/* + * 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) |