1 /* $NetBSD: bwtwo_any.c,v 1.18 2023/12/20 05:13:35 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe and Matthew Fredette. 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 /* 33 * Copyright (c) 1992, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This software was developed by the Computer Systems Engineering group 37 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 38 * contributed to Berkeley. 39 * 40 * All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Lawrence Berkeley Laboratory. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 * 69 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 70 */ 71 72 /* 73 * black&white display (bwtwo) driver. 74 * 75 * Does not handle interrupts, even though they can occur. 76 * 77 * P4 and overlay plane support by Jason R. Thorpe <thorpej (at) NetBSD.org>. 78 * Overlay plane handling hints and ideas provided by Brad Spencer. 79 */ 80 81 #include <sys/cdefs.h> 82 __KERNEL_RCSID(0, "$NetBSD: bwtwo_any.c,v 1.18 2023/12/20 05:13:35 thorpej Exp $"); 83 84 #include <sys/param.h> 85 #include <sys/systm.h> 86 #include <sys/device.h> 87 #include <sys/ioctl.h> 88 #include <sys/mman.h> 89 #include <sys/tty.h> 90 #include <sys/conf.h> 91 92 #include <machine/autoconf.h> 93 #include <sun2/sun2/control.h> 94 95 #include <dev/sun/fbio.h> 96 #include <dev/sun/fbvar.h> 97 #include <dev/sun/btreg.h> 98 #include <sun2/dev/bwtworeg.h> 99 #include <dev/sun/bwtwovar.h> 100 101 /* autoconfiguration driver */ 102 static int bwtwomatch_any(device_t, cfdata_t, void *); 103 static void bwtwoattach_any(device_t, device_t, void *); 104 105 struct bwtwosun2_softc { 106 struct bwtwo_softc sc; 107 bus_space_handle_t bh; 108 }; 109 110 CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwosun2_softc), 111 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 112 113 CFATTACH_DECL_NEW(bwtwo_obmem, sizeof(struct bwtwosun2_softc), 114 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 115 116 static int bwtwo_get_video_sun2(struct bwtwo_softc *); 117 static void bwtwo_set_video_sun2(struct bwtwo_softc *, int); 118 119 extern int fbnode; 120 121 static int 122 bwtwomatch_any(device_t parent, cfdata_t cf, void *aux) 123 { 124 struct mainbus_attach_args *ma = aux; 125 bus_space_handle_t bh; 126 int matched; 127 128 /* Make sure there is something there... */ 129 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 130 sizeof(struct bwtworeg), 0, &bh)) 131 return (0); 132 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 133 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct bwtworeg)); 134 return (matched); 135 } 136 137 static void 138 bwtwoattach_any(device_t parent, device_t self, void *aux) 139 { 140 struct bwtwosun2_softc *scsun2 = device_private(self); 141 struct bwtwo_softc *sc = &scsun2->sc; 142 struct mainbus_attach_args *ma = aux; 143 struct fbdevice *fb = &sc->sc_fb; 144 bus_space_handle_t bh; 145 int isconsole; 146 const char *name; 147 148 sc->sc_dev = self; 149 150 /* Remember cookies for bwtwo_mmap() */ 151 sc->sc_bustag = ma->ma_bustag; 152 sc->sc_paddr = ma->ma_paddr; 153 154 fb->fb_flags = device_cfdata(self)->cf_flags; 155 fb->fb_type.fb_depth = 1; 156 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 157 158 isconsole = fb_is_console(0); 159 160 /* A plain bwtwo */ 161 sc->sc_reg = NULL; 162 fb->fb_pfour = NULL; 163 name = "bwtwo"; 164 sc->sc_pixeloffset = BWREG_MEM; 165 sc->sc_get_video = bwtwo_get_video_sun2; 166 sc->sc_set_video = bwtwo_set_video_sun2; 167 168 /* Map the registers. */ 169 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 170 sizeof(struct bwtworeg), 0, &scsun2->bh)) { 171 printf("%s: cannot map regs\n", device_xname(self)); 172 return; 173 } 174 175 if (isconsole) { 176 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 177 if (bus_space_map(ma->ma_bustag, 178 ma->ma_paddr + sc->sc_pixeloffset, 179 ramsize, 180 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 181 printf("%s: cannot map pixels\n", device_xname(self)); 182 return; 183 } 184 sc->sc_fb.fb_pixels = (char *)bh; 185 } 186 187 bwtwoattach(sc, name, isconsole); 188 } 189 190 static void 191 bwtwo_set_video_sun2(struct bwtwo_softc *sc, int enable) 192 { 193 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 194 unsigned char cr; 195 196 cr = bus_space_read_1(sc->sc_bustag, scsun2->bh, 0); 197 bus_space_write_1(sc->sc_bustag, scsun2->bh, 0, 198 (enable ? 199 (cr | BW2_CR_ENABLE_VIDEO) : 200 (cr & ~BW2_CR_ENABLE_VIDEO))); 201 return; 202 } 203 204 static int 205 bwtwo_get_video_sun2(struct bwtwo_softc *sc) 206 { 207 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 208 209 return ((bus_space_read_1(sc->sc_bustag, scsun2->bh, 0) & 210 BW2_CR_ENABLE_VIDEO) != 0); 211 } 212
Indexes created Thu Oct 23 22:10:10 GMT 2025