1/* -*-C++-*- $NetBSD: framebuffer.cpp,v 1.11 2006/03/05 04:05:39 uwe Exp $ */ 2 3/*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <hpcmenu.h> 33#include <machine/bootinfo.h> 34#include <machine/platid.h> 35#include <machine/platid_mask.h> 36 37#include <framebuffer.h> 38 39// 40// framebuffer configuration table can be found in machine_config.cpp 41// 42 43FrameBufferInfo::FrameBufferInfo(uint32_t cpu, uint32_t machine) 44{ 45 struct framebuffer_info *tab = _table; 46 platid_mask_t target, entry; 47 framebuffer_info *alt = 0; 48 49 // get current bpp. 50 HDC hdc = GetDC(0); 51 int bpp = GetDeviceCaps(hdc, BITSPIXEL); 52 ReleaseDC(0, hdc); 53 54 target.dw.dw0 = cpu; 55 target.dw.dw1 = machine; 56 // search apriori setting if any. 57 for (; tab->cpu; tab++) { 58 entry.dw.dw0 = tab->cpu; 59 entry.dw.dw1 = tab->machine; 60 if (platid_match(&target, &entry)) { 61 if (tab->bpp == bpp) { 62 _fb = tab; 63 return; 64 } else { 65 alt = tab; 66 } 67 } 68 } 69 70 // use alternative framebuffer setting, if any. 71 if (alt) { 72 _fb = alt; 73 return; 74 } 75 76 // no apriori setting. fill default. 77 memset(&_default, 0, sizeof(struct framebuffer_info)); 78 79 _default.cpu = cpu; 80 _default.machine = machine; 81 hdc = GetDC(0); 82 _default.bpp = bpp; 83 _default.width = GetDeviceCaps(hdc, HORZRES); 84 _default.height = GetDeviceCaps(hdc, VERTRES); 85 ReleaseDC(0, hdc); 86 _fb = &_default; 87} 88 89FrameBufferInfo::~FrameBufferInfo() 90{ 91 /* NO-OP */ 92} 93 94int 95FrameBufferInfo::type() 96{ 97 BOOL reverse = HPC_PREFERENCE.reverse_video; 98 int type; 99 100 switch(_fb->bpp) { 101 default: 102 // FALLTHROUGH 103 case 2: 104 type = reverse ? BIFB_D2_M2L_3 : BIFB_D2_M2L_0; 105 break; 106 case 4: 107 type = reverse ? BIFB_D4_M2L_F : BIFB_D4_M2L_0; 108 break; 109 case 8: 110 type = reverse ? BIFB_D8_FF : BIFB_D8_00; 111 break; 112 case 16: 113 type = reverse ? BIFB_D16_FFFF : BIFB_D16_0000; 114 break; 115 } 116 117 return type; 118} 119