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/hw.h" 28 #include "hw/boards.h" 29 #include "hw/loader.h" 30 #include "framebuffer.h" 31 #include "ui/pixel_ops.h" 32 #include "hw/m68k/next-cube.h" 33 #include "qom/object.h" 34 35 typedef struct NeXTFbState NeXTFbState; 36 DECLARE_INSTANCE_CHECKER(NeXTFbState, NEXTFB, 37 TYPE_NEXTFB) 38 39 struct NeXTFbState { 40 SysBusDevice parent_obj; 41 42 MemoryRegion fb_mr; 43 MemoryRegionSection fbsection; 44 QemuConsole *con; 45 46 uint32_t cols; 47 uint32_t rows; 48 int invalidate; 49 }; 50 51 static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s, 52 int width, int pitch) 53 { 54 NeXTFbState *nfbstate = NEXTFB(opaque); 55 static const uint32_t pal[4] = { 56 0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000 57 }; 58 uint32_t *buf = (uint32_t *)d; 59 int i = 0; 60 61 for (i = 0; i < nfbstate->cols / 4; i++) { 62 int j = i * 4; 63 uint8_t src = s[i]; 64 buf[j + 3] = pal[src & 0x3]; 65 src >>= 2; 66 buf[j + 2] = pal[src & 0x3]; 67 src >>= 2; 68 buf[j + 1] = pal[src & 0x3]; 69 src >>= 2; 70 buf[j + 0] = pal[src & 0x3]; 71 } 72 } 73 74 static void nextfb_update(void *opaque) 75 { 76 NeXTFbState *s = NEXTFB(opaque); 77 int dest_width = 4; 78 int src_width; 79 int first = 0; 80 int last = 0; 81 DisplaySurface *surface = qemu_console_surface(s->con); 82 83 src_width = s->cols / 4 + 8; 84 dest_width = s->cols * 4; 85 86 if (s->invalidate) { 87 framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0, 88 s->cols, src_width); 89 s->invalidate = 0; 90 } 91 92 framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows, 93 src_width, dest_width, 0, 1, nextfb_draw_line, 94 s, &first, &last); 95 96 dpy_gfx_update(s->con, 0, 0, s->cols, s->rows); 97 } 98 99 static void nextfb_invalidate(void *opaque) 100 { 101 NeXTFbState *s = NEXTFB(opaque); 102 s->invalidate = 1; 103 } 104 105 static const GraphicHwOps nextfb_ops = { 106 .invalidate = nextfb_invalidate, 107 .gfx_update = nextfb_update, 108 }; 109 110 static void nextfb_realize(DeviceState *dev, Error **errp) 111 { 112 NeXTFbState *s = NEXTFB(dev); 113 114 memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100, 115 &error_fatal); 116 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr); 117 118 s->invalidate = 1; 119 s->cols = 1120; 120 s->rows = 832; 121 122 s->con = graphic_console_init(dev, 0, &nextfb_ops, s); 123 qemu_console_resize(s->con, s->cols, s->rows); 124 } 125 126 static void nextfb_class_init(ObjectClass *oc, void *data) 127 { 128 DeviceClass *dc = DEVICE_CLASS(oc); 129 130 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 131 dc->realize = nextfb_realize; 132 133 /* Note: This device does not any state that we have to reset or migrate */ 134 } 135 136 static const TypeInfo nextfb_info = { 137 .name = TYPE_NEXTFB, 138 .parent = TYPE_SYS_BUS_DEVICE, 139 .instance_size = sizeof(NeXTFbState), 140 .class_init = nextfb_class_init, 141 }; 142 143 static void nextfb_register_types(void) 144 { 145 type_register_static(&nextfb_info); 146 } 147 148 type_init(nextfb_register_types) 149