1 /* $NetBSD: bwtwo_any.c,v 1.14 2005/12/11 12:19:16 christos 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 * 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 /* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This software was developed by the Computer Systems Engineering group 44 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 45 * contributed to Berkeley. 46 * 47 * All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Lawrence Berkeley Laboratory. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 77 */ 78 79 /* 80 * black&white display (bwtwo) driver. 81 * 82 * Does not handle interrupts, even though they can occur. 83 * 84 * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.org>. 85 * Overlay plane handling hints and ideas provided by Brad Spencer. 86 */ 87 88 #include <sys/cdefs.h> 89 __KERNEL_RCSID(0, "$NetBSD: bwtwo_any.c,v 1.14 2005/12/11 12:19:16 christos Exp $"); 90 91 #include <sys/param.h> 92 #include <sys/systm.h> 93 #include <sys/device.h> 94 #include <sys/ioctl.h> 95 #include <sys/malloc.h> 96 #include <sys/mman.h> 97 #include <sys/tty.h> 98 #include <sys/conf.h> 99 100 #include <machine/autoconf.h> 101 #include <sun2/sun2/control.h> 102 103 #include <dev/sun/fbio.h> 104 #include <dev/sun/fbvar.h> 105 #include <dev/sun/btreg.h> 106 #include <sun2/dev/bwtworeg.h> 107 #include <dev/sun/bwtwovar.h> 108 109 /* autoconfiguration driver */ 110 static void bwtwoattach_any (struct device *, struct device *, void *); 111 static int bwtwomatch_any (struct device *, struct cfdata *, void *); 112 113 struct bwtwosun2_softc { 114 struct bwtwo_softc sc; 115 bus_space_handle_t bh; 116 }; 117 118 CFATTACH_DECL(bwtwo_obio, sizeof(struct bwtwosun2_softc), 119 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 120 121 CFATTACH_DECL(bwtwo_obmem, sizeof(struct bwtwosun2_softc), 122 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 123 124 static int bwtwo_get_video_sun2(struct bwtwo_softc *); 125 static void bwtwo_set_video_sun2(struct bwtwo_softc *, int); 126 127 extern int fbnode; 128 129 static int 130 bwtwomatch_any(struct device *parent, struct cfdata *cf, void *aux) 131 { 132 struct mainbus_attach_args *ma = aux; 133 bus_space_handle_t bh; 134 int matched; 135 136 /* Make sure there is something there... */ 137 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 138 sizeof(struct bwtworeg), 0, &bh)) 139 return (0); 140 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 141 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct bwtworeg)); 142 return (matched); 143 } 144 145 static void 146 bwtwoattach_any(struct device *parent, struct device *self, void *aux) 147 { 148 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)self; 149 struct bwtwo_softc *sc = &scsun2->sc; 150 struct mainbus_attach_args *ma = aux; 151 struct fbdevice *fb = &sc->sc_fb; 152 bus_space_handle_t bh; 153 int isconsole; 154 const char *name; 155 156 /* Remember cookies for bwtwo_mmap() */ 157 sc->sc_bustag = ma->ma_bustag; 158 sc->sc_paddr = ma->ma_paddr; 159 160 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 161 fb->fb_type.fb_depth = 1; 162 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 163 164 isconsole = fb_is_console(0); 165 166 /* A plain bwtwo */ 167 sc->sc_reg = NULL; 168 fb->fb_pfour = NULL; 169 name = "bwtwo"; 170 sc->sc_pixeloffset = BWREG_MEM; 171 sc->sc_get_video = bwtwo_get_video_sun2; 172 sc->sc_set_video = bwtwo_set_video_sun2; 173 174 /* Map the registers. */ 175 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 176 sizeof(struct bwtworeg), 0, &scsun2->bh)) { 177 printf("%s: cannot map regs\n", self->dv_xname); 178 return; 179 } 180 181 if (isconsole) { 182 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 183 if (bus_space_map(ma->ma_bustag, 184 ma->ma_paddr + sc->sc_pixeloffset, 185 ramsize, 186 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 187 printf("%s: cannot map pixels\n", self->dv_xname); 188 return; 189 } 190 sc->sc_fb.fb_pixels = (char *)bh; 191 } 192 193 bwtwoattach(sc, name, isconsole); 194 } 195 196 static void 197 bwtwo_set_video_sun2(struct bwtwo_softc *sc, int enable) 198 { 199 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 200 unsigned char cr; 201 202 cr = bus_space_read_1(sc->sc_bustag, scsun2->bh, 0); 203 bus_space_write_1(sc->sc_bustag, scsun2->bh, 0, 204 (enable ? 205 (cr | BW2_CR_ENABLE_VIDEO) : 206 (cr & ~BW2_CR_ENABLE_VIDEO))); 207 return; 208 } 209 210 static int 211 bwtwo_get_video_sun2(struct bwtwo_softc *sc) 212 { 213 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 214 215 return ((bus_space_read_1(sc->sc_bustag, scsun2->bh, 0) & 216 BW2_CR_ENABLE_VIDEO) != 0); 217 } 218