1 /* $NetBSD: bwtwo_any.c,v 1.16 2008/04/28 20:23:37 martin 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@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 1.16 2008/04/28 20:23:37 martin 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/malloc.h> 89 #include <sys/mman.h> 90 #include <sys/tty.h> 91 #include <sys/conf.h> 92 93 #include <machine/autoconf.h> 94 #include <sun2/sun2/control.h> 95 96 #include <dev/sun/fbio.h> 97 #include <dev/sun/fbvar.h> 98 #include <dev/sun/btreg.h> 99 #include <sun2/dev/bwtworeg.h> 100 #include <dev/sun/bwtwovar.h> 101 102 /* autoconfiguration driver */ 103 static void bwtwoattach_any (struct device *, struct device *, void *); 104 static int bwtwomatch_any (struct device *, struct cfdata *, void *); 105 106 struct bwtwosun2_softc { 107 struct bwtwo_softc sc; 108 bus_space_handle_t bh; 109 }; 110 111 CFATTACH_DECL(bwtwo_obio, sizeof(struct bwtwosun2_softc), 112 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 113 114 CFATTACH_DECL(bwtwo_obmem, sizeof(struct bwtwosun2_softc), 115 bwtwomatch_any, bwtwoattach_any, NULL, NULL); 116 117 static int bwtwo_get_video_sun2(struct bwtwo_softc *); 118 static void bwtwo_set_video_sun2(struct bwtwo_softc *, int); 119 120 extern int fbnode; 121 122 static int 123 bwtwomatch_any(struct device *parent, struct cfdata *cf, void *aux) 124 { 125 struct mainbus_attach_args *ma = aux; 126 bus_space_handle_t bh; 127 int matched; 128 129 /* Make sure there is something there... */ 130 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 131 sizeof(struct bwtworeg), 0, &bh)) 132 return (0); 133 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 134 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct bwtworeg)); 135 return (matched); 136 } 137 138 static void 139 bwtwoattach_any(struct device *parent, struct device *self, void *aux) 140 { 141 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)self; 142 struct bwtwo_softc *sc = &scsun2->sc; 143 struct mainbus_attach_args *ma = aux; 144 struct fbdevice *fb = &sc->sc_fb; 145 bus_space_handle_t bh; 146 int isconsole; 147 const char *name; 148 149 /* Remember cookies for bwtwo_mmap() */ 150 sc->sc_bustag = ma->ma_bustag; 151 sc->sc_paddr = ma->ma_paddr; 152 153 fb->fb_flags = device_cfdata(&sc->sc_dev)->cf_flags; 154 fb->fb_type.fb_depth = 1; 155 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 156 157 isconsole = fb_is_console(0); 158 159 /* A plain bwtwo */ 160 sc->sc_reg = NULL; 161 fb->fb_pfour = NULL; 162 name = "bwtwo"; 163 sc->sc_pixeloffset = BWREG_MEM; 164 sc->sc_get_video = bwtwo_get_video_sun2; 165 sc->sc_set_video = bwtwo_set_video_sun2; 166 167 /* Map the registers. */ 168 if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG, 169 sizeof(struct bwtworeg), 0, &scsun2->bh)) { 170 printf("%s: cannot map regs\n", self->dv_xname); 171 return; 172 } 173 174 if (isconsole) { 175 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 176 if (bus_space_map(ma->ma_bustag, 177 ma->ma_paddr + sc->sc_pixeloffset, 178 ramsize, 179 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 180 printf("%s: cannot map pixels\n", self->dv_xname); 181 return; 182 } 183 sc->sc_fb.fb_pixels = (char *)bh; 184 } 185 186 bwtwoattach(sc, name, isconsole); 187 } 188 189 static void 190 bwtwo_set_video_sun2(struct bwtwo_softc *sc, int enable) 191 { 192 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 193 unsigned char cr; 194 195 cr = bus_space_read_1(sc->sc_bustag, scsun2->bh, 0); 196 bus_space_write_1(sc->sc_bustag, scsun2->bh, 0, 197 (enable ? 198 (cr | BW2_CR_ENABLE_VIDEO) : 199 (cr & ~BW2_CR_ENABLE_VIDEO))); 200 return; 201 } 202 203 static int 204 bwtwo_get_video_sun2(struct bwtwo_softc *sc) 205 { 206 struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc; 207 208 return ((bus_space_read_1(sc->sc_bustag, scsun2->bh, 0) & 209 BW2_CR_ENABLE_VIDEO) != 0); 210 } 211