1 /* -*-C++-*- $NetBSD: framebuffer.cpp,v 1.8 2001/06/20 17:36:00 uch 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <hpcmenu.h> 40 #include <machine/bootinfo.h> 41 #include <machine/platid.h> 42 #include <machine/platid_mask.h> 43 44 #include <framebuffer.h> 45 46 // 47 // framebuffer configuration table can be found in machine_config.cpp 48 // 49 50 FrameBufferInfo::FrameBufferInfo(u_int32_t cpu, u_int32_t machine) 51 { 52 struct framebuffer_info *tab = _table; 53 platid_mask_t target, entry; 54 framebuffer_info *alt = 0; 55 56 // get current bpp. 57 HDC hdc = GetDC(0); 58 int bpp = GetDeviceCaps(hdc, BITSPIXEL); 59 ReleaseDC(0, hdc); 60 61 target.dw.dw0 = cpu; 62 target.dw.dw1 = machine; 63 // search apriori setting if any. 64 for (; tab->cpu; tab++) { 65 entry.dw.dw0 = tab->cpu; 66 entry.dw.dw1 = tab->machine; 67 if (platid_match(&target, &entry)) { 68 if (tab->bpp == bpp) { 69 _fb = tab; 70 return; 71 } else { 72 alt = tab; 73 } 74 } 75 } 76 77 // use alternative framebuffer setting, if any. 78 if (alt) { 79 _fb = alt; 80 return; 81 } 82 83 // no apriori setting. fill default. 84 memset(&_default, 0, sizeof(struct framebuffer_info)); 85 86 _default.cpu = cpu; 87 _default.machine = machine; 88 hdc = GetDC(0); 89 _default.bpp = bpp; 90 _default.width = GetDeviceCaps(hdc, HORZRES); 91 _default.height = GetDeviceCaps(hdc, VERTRES); 92 ReleaseDC(0, hdc); 93 _fb = &_default; 94 } 95 96 FrameBufferInfo::~FrameBufferInfo() 97 { 98 /* NO-OP */ 99 } 100 101 int 102 FrameBufferInfo::type() 103 { 104 BOOL reverse = HPC_PREFERENCE.reverse_video; 105 int type; 106 107 switch(_fb->bpp) { 108 default: 109 // FALLTHROUGH 110 case 2: 111 type = reverse ? BIFB_D2_M2L_3 : BIFB_D2_M2L_0; 112 break; 113 case 4: 114 type = reverse ? BIFB_D4_M2L_F : BIFB_D4_M2L_0; 115 break; 116 case 8: 117 type = reverse ? BIFB_D8_FF : BIFB_D8_00; 118 break; 119 case 16: 120 type = reverse ? BIFB_D16_FFFF : BIFB_D16_0000; 121 break; 122 } 123 124 return type; 125 } 126