| /* |
| * 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) |