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