1 /* -*-C++-*- $NetBSD: framebuffer.cpp,v 1.12 2008/04/28 20:23:20 martin 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
FrameBufferInfo(uint32_t cpu,uint32_t machine)43 FrameBufferInfo::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
~FrameBufferInfo()89 FrameBufferInfo::~FrameBufferInfo()
90 {
91 /* NO-OP */
92 }
93
94 int
type()95 FrameBufferInfo::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