grf_gv.c revision 1.14
1 /* $NetBSD: grf_gv.c,v 1.14 2009/01/18 02:40:05 isaki Exp $ */ 2 3 /* 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: grf_tc.c 1.20 93/08/13$ 36 * 37 * @(#)grf_tc.c 8.4 (Berkeley) 1/12/94 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: grf_tc.c 1.20 93/08/13$ 75 * 76 * @(#)grf_tc.c 8.4 (Berkeley) 1/12/94 77 */ 78 79 /* 80 * Graphics routines for the X68K native custom chip set. 81 */ 82 83 #include <sys/cdefs.h> 84 __KERNEL_RCSID(0, "$NetBSD: grf_gv.c,v 1.14 2009/01/18 02:40:05 isaki Exp $"); 85 86 #include <sys/param.h> 87 #include <sys/device.h> 88 #include <sys/errno.h> 89 90 #include <machine/cpu.h> 91 #include <machine/grfioctl.h> 92 93 #include <x68k/dev/grfvar.h> 94 #include <x68k/x68k/iodevice.h> 95 96 int gv_init(struct grf_softc *, void *); 97 int gv_mode(struct grf_softc *, u_long, void *); 98 99 /* Initialize hardware. 100 * Must fill in the grfinfo structure in g_softc. 101 * Returns 0 if hardware not present, non-zero ow. 102 */ 103 int 104 gv_init(struct grf_softc *gp, void *addr) 105 { 106 struct grfinfo *gi = &gp->g_display; 107 108 gi->gd_fbwidth = 1024; 109 gi->gd_fbheight = 1024; 110 gi->gd_planes = 4; 111 gi->gd_regaddr = (void *)0x00e80000; 112 gi->gd_regsize = 0x00010000; /* contains system port */ 113 gi->gd_fbaddr = (void *)0x00c00000; 114 gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight * 2; 115 gp->g_regkva = addr; 116 gp->g_fbkva = addr; 117 switch(IODEVbase->io_sram[0x1d]) { 118 case 18: 119 /* 120 * mode 18, 24kHz 121 */ 122 gi->gd_dwidth = 1024; 123 gi->gd_dheight = 848; 124 break; 125 case 19: 126 /* 127 * mode 19, 31kHz VGA mode 128 */ 129 gi->gd_dwidth = 640; 130 gi->gd_dheight = 480; 131 break; 132 default: 133 /* 134 * mode 16, 31kHz (default) 135 */ 136 gi->gd_dwidth = 768; 137 gi->gd_dheight = 512; 138 break; 139 } 140 gi->gd_colors = 16; 141 142 return 1; 143 } 144 145 /* 146 * Change the mode of the display. 147 * Right now all we can do is grfon/grfoff. 148 * Return a UNIX error number or 0 for success. 149 */ 150 /*ARGSUSED*/ 151 int 152 gv_mode(struct grf_softc *gp, u_long cmd, void *data) 153 { 154 int error = 0; 155 156 switch (cmd) { 157 case GM_GRFON: 158 case GM_GRFOFF: 159 break; 160 161 /* 162 * Remember UVA of mapping for GCDESCRIBE. 163 * XXX this should be per-process. 164 */ 165 case GM_MAP: 166 gp->g_data = data; 167 break; 168 169 case GM_UNMAP: 170 gp->g_data = 0; 171 break; 172 173 case GM_GRFSETVMODE: 174 if (*(int *)data == 1) { 175 struct grfinfo *gi = &gp->g_display; 176 volatile struct crtc *crtc = &IODEVbase->io_crtc; 177 /* Reset CRTC, set dwidth and dheight accordingly */ 178 crtc->r20 = (crtc->r20 & 0xFF00) | 0x1a; 179 crtc->r08 = 0x1b; 180 crtc->r07 = 0x19c; 181 crtc->r06 = 0x1c; 182 crtc->r05 = 0x02; 183 crtc->r04 = 0x019f; 184 crtc->r03 = 0x9a; 185 crtc->r02 = 0x1a; 186 crtc->r01 = 0x09; 187 crtc->r00 = 0xa4; 188 gi->gd_dwidth = 1024; 189 gi->gd_dheight = 768; 190 } 191 break; 192 193 default: 194 error = EINVAL; 195 break; 196 } 197 return error; 198 } 199
Indexes created Tue Sep 23 07:09:52 GMT 2025