1 /* 2 * NeXT Cube/Station Framebuffer Emulation 3 * 4 * Copyright (c) 2011 Bryce Lanham 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 #include "qemu/osdep.h" 25 #include "qapi/error.h" 26 #include "ui/console.h" 27 #include "hw/boards.h" 28 #include "hw/loader.h" 29 #include "framebuffer.h" 30 #include "ui/pixel_ops.h" 31 #include "hw/m68k/next-cube.h" 32 #include "qom/object.h" 33 34 OBJECT_DECLARE_SIMPLE_TYPE(NeXTFbState, NEXTFB) 35 36 struct NeXTFbState { 37 SysBusDevice parent_obj; 38 39 MemoryRegion fb_mr; 40 MemoryRegionSection fbsection; 41 QemuConsole *con; 42 43 uint32_t cols; 44 uint32_t rows; 45 int invalidate; 46 }; 47 48 static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s, 49 int width, int pitch) 50 { 51 NeXTFbState *nfbstate = NEXTFB(opaque); 52 static const uint32_t pal[4] = { 53 0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000 54 }; 55 uint32_t *buf = (uint32_t *)d; 56 int i = 0; 57 58 for (i = 0; i < nfbstate->cols / 4; i++) { 59 int j = i * 4; 60 uint8_t src = s[i]; 61 buf[j + 3] = pal[src & 0x3]; 62 src >>= 2; 63 buf[j + 2] = pal[src & 0x3]; 64 src >>= 2; 65 buf[j + 1] = pal[src & 0x3]; 66 src >>= 2; 67 buf[j + 0] = pal[src & 0x3]; 68 } 69 } 70 71 static void nextfb_update(void *opaque) 72 { 73 NeXTFbState *s = NEXTFB(opaque); 74 int dest_width = 4; 75 int src_width; 76 int first = 0; 77 int last = 0; 78 DisplaySurface *surface = qemu_console_surface(s->con); 79 80 src_width = s->cols / 4 + 8; 81 dest_width = s->cols * 4; 82 83 if (s->invalidate) { 84 framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0, 85 s->cols, src_width); 86 s->invalidate = 0; 87 } 88 89 framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows, 90 src_width, dest_width, 0, 1, nextfb_draw_line, 91 s, &first, &last); 92 93 dpy_gfx_update(s->con, 0, 0, s->cols, s->rows); 94 } 95 96 static void nextfb_invalidate(void *opaque) 97 { 98 NeXTFbState *s = NEXTFB(opaque); 99 s->invalidate = 1; 100 } 101 102 static const GraphicHwOps nextfb_ops = { 103 .invalidate = nextfb_invalidate, 104 .gfx_update = nextfb_update, 105 }; 106 107 static void nextfb_realize(DeviceState *dev, Error **errp) 108 { 109 NeXTFbState *s = NEXTFB(dev); 110 111 memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100, 112 &error_fatal); 113 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr); 114 115 s->invalidate = 1; 116 s->cols = 1120; 117 s->rows = 832; 118 119 s->con = graphic_console_init(dev, 0, &nextfb_ops, s); 120 qemu_console_resize(s->con, s->cols, s->rows); 121 } 122 123 static void nextfb_class_init(ObjectClass *oc, void *data) 124 { 125 DeviceClass *dc = DEVICE_CLASS(oc); 126 127 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 128 dc->realize = nextfb_realize; 129 130 /* Note: This device does not any state that we have to reset or migrate */ 131 } 132 133 static const TypeInfo nextfb_info = { 134 .name = TYPE_NEXTFB, 135 .parent = TYPE_SYS_BUS_DEVICE, 136 .instance_size = sizeof(NeXTFbState), 137 .class_init = nextfb_class_init, 138 }; 139 140 static void nextfb_register_types(void) 141 { 142 type_register_static(&nextfb_info); 143 } 144 145 type_init(nextfb_register_types) 146