pfour_subr.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: pfour_subr.c,v 1.1.2.2 2000/11/20 11:43:11 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 bouyer * by Paul Kranenburg. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by the NetBSD 21 1.1.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.1.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.1.2.2 bouyer * from this software without specific prior written permission. 25 1.1.2.2 bouyer * 26 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 bouyer */ 38 1.1.2.2 bouyer 39 1.1.2.2 bouyer /* 40 1.1.2.2 bouyer * Support routines for pfour framebuffers. 41 1.1.2.2 bouyer */ 42 1.1.2.2 bouyer 43 1.1.2.2 bouyer 44 1.1.2.2 bouyer #include <sys/param.h> 45 1.1.2.2 bouyer #include <sys/systm.h> 46 1.1.2.2 bouyer #include <sys/device.h> 47 1.1.2.2 bouyer 48 1.1.2.2 bouyer #include <dev/sun/pfourreg.h> 49 1.1.2.2 bouyer #include <dev/sun/fbio.h> 50 1.1.2.2 bouyer #include <dev/sun/fbvar.h> 51 1.1.2.2 bouyer 52 1.1.2.2 bouyer void 53 1.1.2.2 bouyer fb_setsize_pfour(fb) 54 1.1.2.2 bouyer struct fbdevice *fb; 55 1.1.2.2 bouyer { 56 1.1.2.2 bouyer #if defined(SUN4) 57 1.1.2.2 bouyer volatile u_int32_t pfour; 58 1.1.2.2 bouyer int width, height; 59 1.1.2.2 bouyer 60 1.1.2.2 bouyer /* 61 1.1.2.2 bouyer * Some pfour framebuffers, e.g. the 62 1.1.2.2 bouyer * cgsix, don't encode resolution the 63 1.1.2.2 bouyer * same, so the driver handles that. 64 1.1.2.2 bouyer * The driver can let us know that it 65 1.1.2.2 bouyer * needs to do this by not mapping in 66 1.1.2.2 bouyer * the pfour register by the time this 67 1.1.2.2 bouyer * routine is called. 68 1.1.2.2 bouyer */ 69 1.1.2.2 bouyer if (fb->fb_pfour == NULL) 70 1.1.2.2 bouyer return; 71 1.1.2.2 bouyer 72 1.1.2.2 bouyer pfour = *fb->fb_pfour; 73 1.1.2.2 bouyer 74 1.1.2.2 bouyer /* 75 1.1.2.2 bouyer * Use the pfour register to determine 76 1.1.2.2 bouyer * the size. Note that the cgsix and 77 1.1.2.2 bouyer * cgeight don't use this size encoding. 78 1.1.2.2 bouyer * In this case, we have to settle 79 1.1.2.2 bouyer * for the defaults we were provided 80 1.1.2.2 bouyer * with. 81 1.1.2.2 bouyer */ 82 1.1.2.2 bouyer if ((PFOUR_ID(pfour) == PFOUR_ID_COLOR24) || 83 1.1.2.2 bouyer (PFOUR_ID(pfour) == PFOUR_ID_FASTCOLOR)) 84 1.1.2.2 bouyer return; 85 1.1.2.2 bouyer 86 1.1.2.2 bouyer switch (PFOUR_SIZE(pfour)) { 87 1.1.2.2 bouyer case PFOUR_SIZE_1152X900: 88 1.1.2.2 bouyer width = 1152; 89 1.1.2.2 bouyer height = 900; 90 1.1.2.2 bouyer break; 91 1.1.2.2 bouyer 92 1.1.2.2 bouyer case PFOUR_SIZE_1024X1024: 93 1.1.2.2 bouyer width = 1024; 94 1.1.2.2 bouyer height = 1024; 95 1.1.2.2 bouyer break; 96 1.1.2.2 bouyer 97 1.1.2.2 bouyer case PFOUR_SIZE_1280X1024: 98 1.1.2.2 bouyer width = 1280; 99 1.1.2.2 bouyer height = 1024; 100 1.1.2.2 bouyer break; 101 1.1.2.2 bouyer 102 1.1.2.2 bouyer case PFOUR_SIZE_1600X1280: 103 1.1.2.2 bouyer width = 1600; 104 1.1.2.2 bouyer height = 1280; 105 1.1.2.2 bouyer break; 106 1.1.2.2 bouyer 107 1.1.2.2 bouyer case PFOUR_SIZE_1440X1440: 108 1.1.2.2 bouyer width = 1440; 109 1.1.2.2 bouyer height = 1440; 110 1.1.2.2 bouyer break; 111 1.1.2.2 bouyer 112 1.1.2.2 bouyer case PFOUR_SIZE_640X480: 113 1.1.2.2 bouyer width = 640; 114 1.1.2.2 bouyer height = 480; 115 1.1.2.2 bouyer break; 116 1.1.2.2 bouyer 117 1.1.2.2 bouyer default: 118 1.1.2.2 bouyer /* 119 1.1.2.2 bouyer * XXX: Do nothing, I guess. 120 1.1.2.2 bouyer * Should we print a warning about 121 1.1.2.2 bouyer * an unknown value? --thorpej 122 1.1.2.2 bouyer */ 123 1.1.2.2 bouyer break; 124 1.1.2.2 bouyer } 125 1.1.2.2 bouyer 126 1.1.2.2 bouyer fb->fb_type.fb_width = width; 127 1.1.2.2 bouyer fb->fb_type.fb_height = height; 128 1.1.2.2 bouyer #endif /* SUN4 */ 129 1.1.2.2 bouyer } 130 1.1.2.2 bouyer 131 1.1.2.2 bouyer 132 1.1.2.2 bouyer /* 133 1.1.2.2 bouyer * Probe for a pfour framebuffer. Return values: 134 1.1.2.2 bouyer * 135 1.1.2.2 bouyer * PFOUR_NOTPFOUR: framebuffer is not a pfour framebuffer 136 1.1.2.2 bouyer * otherwise returns pfour ID 137 1.1.2.2 bouyer */ 138 1.1.2.2 bouyer int 139 1.1.2.2 bouyer fb_pfour_id(va) 140 1.1.2.2 bouyer volatile void *va; 141 1.1.2.2 bouyer { 142 1.1.2.2 bouyer #if defined(SUN4) 143 1.1.2.2 bouyer volatile u_int32_t val, save, *pfour = va; 144 1.1.2.2 bouyer 145 1.1.2.2 bouyer /* Read the pfour register. */ 146 1.1.2.2 bouyer save = *pfour; 147 1.1.2.2 bouyer 148 1.1.2.2 bouyer /* 149 1.1.2.2 bouyer * Try to modify the type code. If it changes, put the 150 1.1.2.2 bouyer * original value back, and notify the caller that it's 151 1.1.2.2 bouyer * not a pfour framebuffer. 152 1.1.2.2 bouyer */ 153 1.1.2.2 bouyer val = save & ~PFOUR_REG_RESET; 154 1.1.2.2 bouyer *pfour = (val ^ PFOUR_FBTYPE_MASK); 155 1.1.2.2 bouyer if ((*pfour ^ val) & PFOUR_FBTYPE_MASK) { 156 1.1.2.2 bouyer *pfour = save; 157 1.1.2.2 bouyer return (PFOUR_NOTPFOUR); 158 1.1.2.2 bouyer } 159 1.1.2.2 bouyer 160 1.1.2.2 bouyer return (PFOUR_ID(val)); 161 1.1.2.2 bouyer #else 162 1.1.2.2 bouyer return (PFOUR_NOTPFOUR); 163 1.1.2.2 bouyer #endif /* SUN4 */ 164 1.1.2.2 bouyer } 165 1.1.2.2 bouyer 166 1.1.2.2 bouyer /* 167 1.1.2.2 bouyer * Return the status of the video enable. 168 1.1.2.2 bouyer */ 169 1.1.2.2 bouyer int 170 1.1.2.2 bouyer fb_pfour_get_video(fb) 171 1.1.2.2 bouyer struct fbdevice *fb; 172 1.1.2.2 bouyer { 173 1.1.2.2 bouyer 174 1.1.2.2 bouyer return ((*fb->fb_pfour & PFOUR_REG_VIDEO) != 0); 175 1.1.2.2 bouyer } 176 1.1.2.2 bouyer 177 1.1.2.2 bouyer /* 178 1.1.2.2 bouyer * Enable or disable the framebuffer. 179 1.1.2.2 bouyer */ 180 1.1.2.2 bouyer void 181 1.1.2.2 bouyer fb_pfour_set_video(fb, enable) 182 1.1.2.2 bouyer struct fbdevice *fb; 183 1.1.2.2 bouyer int enable; 184 1.1.2.2 bouyer { 185 1.1.2.2 bouyer volatile u_int32_t pfour; 186 1.1.2.2 bouyer 187 1.1.2.2 bouyer pfour = *fb->fb_pfour & ~(PFOUR_REG_INTCLR|PFOUR_REG_VIDEO); 188 1.1.2.2 bouyer *fb->fb_pfour = pfour | (enable ? PFOUR_REG_VIDEO : 0); 189 1.1.2.2 bouyer } 190
Indexes created Tue Sep 30 20:09:53 GMT 2025