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