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/loader.h" 28 #include "framebuffer.h" 29 #include "ui/pixel_ops.h" 30 #include "hw/m68k/next-cube.h" 31 #include "qom/object.h" 32 33 OBJECT_DECLARE_SIMPLE_TYPE(NeXTFbState, NEXTFB) 34 35 struct NeXTFbState { 36 SysBusDevice parent_obj; 37 38 MemoryRegion fb_mr; 39 MemoryRegionSection fbsection; 40 QemuConsole *con; 41 42 uint32_t cols; 43 uint32_t rows; 44 int invalidate; 45 }; 46 47 static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s, 48 int width, int pitch) 49 { 50 NeXTFbState *nfbstate = NEXTFB(opaque); 51 static const uint32_t pal[4] = { 52 0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000 53 }; 54 uint32_t *buf = (uint32_t *)d; 55 int i = 0; 56 57 for (i = 0; i < nfbstate->cols / 4; i++) { 58 int j = i * 4; 59 uint8_t src = s[i]; 60 buf[j + 3] = pal[src & 0x3]; 61 src >>= 2; 62 buf[j + 2] = pal[src & 0x3]; 63 src >>= 2; 64 buf[j + 1] = pal[src & 0x3]; 65 src >>= 2; 66 buf[j + 0] = pal[src & 0x3]; 67 } 68 } 69 70 static void nextfb_update(void *opaque) 71 { 72 NeXTFbState *s = NEXTFB(opaque); 73 int dest_width = 4; 74 int src_width; 75 int first = 0; 76 int last = 0; 77 DisplaySurface *surface = qemu_console_surface(s->con); 78 79 src_width = s->cols / 4 + 8; 80 dest_width = s->cols * 4; 81 82 if (s->invalidate) { 83 framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0, 84 s->cols, src_width); 85 s->invalidate = 0; 86 } 87 88 framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows, 89 src_width, dest_width, 0, 1, nextfb_draw_line, 90 s, &first, &last); 91 92 dpy_gfx_update(s->con, 0, 0, s->cols, s->rows); 93 } 94 95 static void nextfb_invalidate(void *opaque) 96 { 97 NeXTFbState *s = NEXTFB(opaque); 98 s->invalidate = 1; 99 } 100 101 static const GraphicHwOps nextfb_ops = { 102 .invalidate = nextfb_invalidate, 103 .gfx_update = nextfb_update, 104 }; 105 106 static void nextfb_realize(DeviceState *dev, Error **errp) 107 { 108 NeXTFbState *s = NEXTFB(dev); 109 110 memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100, 111 &error_fatal); 112 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr); 113 114 s->invalidate = 1; 115 s->cols = 1120; 116 s->rows = 832; 117 118 s->con = graphic_console_init(dev, 0, &nextfb_ops, s); 119 qemu_console_resize(s->con, s->cols, s->rows); 120 } 121 122 static void nextfb_class_init(ObjectClass *oc, void *data) 123 { 124 DeviceClass *dc = DEVICE_CLASS(oc); 125 126 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 127 dc->realize = nextfb_realize; 128 129 /* Note: This device does not have any state that we have to reset or migrate */ 130 } 131 132 static const TypeInfo nextfb_info = { 133 .name = TYPE_NEXTFB, 134 .parent = TYPE_SYS_BUS_DEVICE, 135 .instance_size = sizeof(NeXTFbState), 136 .class_init = nextfb_class_init, 137 }; 138 139 static void nextfb_register_types(void) 140 { 141 type_register_static(&nextfb_info); 142 } 143 144 type_init(nextfb_register_types) 145