bwtwo_sbus.c revision 1.1
1/* $NetBSD: bwtwo_sbus.c,v 1.1 2000/08/20 14:33:25 pk 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. 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. All advertising materials mentioning features or use of this software 61 * must display the following acknowledgement: 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 81 */ 82 83/* 84 * black&white display (bwtwo) driver. 85 * 86 * Does not handle interrupts, even though they can occur. 87 * 88 * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.ORG>. 89 * Overlay plane handling hints and ideas provided by Brad Spencer. 90 */ 91 92#include <sys/param.h> 93#include <sys/systm.h> 94#include <sys/device.h> 95#include <sys/ioctl.h> 96#include <sys/malloc.h> 97#include <sys/mman.h> 98#include <sys/tty.h> 99#include <sys/conf.h> 100 101#include <machine/autoconf.h> 102#include <machine/eeprom.h> 103#include <machine/conf.h> 104 105#include <dev/sbus/sbusvar.h> 106 107#include <dev/sun/fbio.h> 108#include <dev/sun/fbvar.h> 109#include <dev/sun/btreg.h> 110#include <dev/sun/bwtworeg.h> 111#include <dev/sun/bwtwovar.h> 112#include <dev/sun/pfourreg.h> 113 114/* autoconfiguration driver */ 115static void bwtwoattach_sbus (struct device *, struct device *, void *); 116static int bwtwomatch_sbus (struct device *, struct cfdata *, void *); 117 118/* Allocate an `sbusdev' in addition to the bwtwo softc */ 119struct bwtwo_sbus_softc { 120 struct bwtwo_softc bss_softc; 121 struct sbusdev bss_sd; 122}; 123 124struct cfattach bwtwo_sbus_ca = { 125 sizeof(struct bwtwo_sbus_softc), bwtwomatch_sbus, bwtwoattach_sbus 126}; 127 128static int bwtwo_get_video (struct bwtwo_softc *); 129static void bwtwo_set_video (struct bwtwo_softc *, int); 130 131/* 132 * Match a bwtwo. 133 */ 134static int 135bwtwomatch_sbus(parent, cf, aux) 136 struct device *parent; 137 struct cfdata *cf; 138 void *aux; 139{ 140 struct sbus_attach_args *sa = aux; 141 142 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 143} 144 145 146/* 147 * Attach a display. We need to notice if it is the console, too. 148 */ 149void 150bwtwoattach_sbus(parent, self, args) 151 struct device *parent, *self; 152 void *args; 153{ 154 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 155 struct sbusdev *sd = &((struct bwtwo_sbus_softc *)self)->bss_sd; 156 struct sbus_attach_args *sa = args; 157 struct fbdevice *fb = &sc->sc_fb; 158 bus_space_handle_t bh; 159 int isconsole, node; 160 char *name; 161 162 node = sa->sa_node; 163 164 /* Remember cookies for bwtwo_mmap() */ 165 sc->sc_bustag = sa->sa_bustag; 166 sc->sc_btype = (bus_type_t)sa->sa_slot; 167 sc->sc_paddr = (bus_addr_t)sa->sa_offset; 168 169 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 170 fb->fb_type.fb_depth = 1; 171 fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node); 172 173 /* 174 * When the ROM has mapped in a bwtwo display, the address 175 * maps only the video RAM, hence we always map the control 176 * registers ourselves. We only need the video RAM if we are 177 * going to print characters via rconsole. 178 */ 179 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 180 sa->sa_offset + BWREG_REG, 181 sizeof(struct fbcontrol), 182 BUS_SPACE_MAP_LINEAR, 183 0, &bh) != 0) { 184 printf("%s: cannot map control registers\n", self->dv_xname); 185 return; 186 } 187 sc->sc_reg = (struct fbcontrol *)bh; 188 fb->fb_pfour = NULL; 189 190 sc->sc_pixeloffset = BWREG_MEM; 191 192 isconsole = fb_is_console(node); 193 name = getpropstring(node, "model"); 194 195 /* Assume `bwtwo at sbus' only happens at sun4c's */ 196 sc->sc_get_video = bwtwo_get_video; 197 sc->sc_set_video = bwtwo_set_video; 198 199 if (sa->sa_npromvaddrs != 0) 200 sc->sc_fb.fb_pixels = (caddr_t)sa->sa_promvaddrs[0]; 201 if (isconsole && sc->sc_fb.fb_pixels == NULL) { 202 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 203 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 204 sa->sa_offset + sc->sc_pixeloffset, 205 ramsize, 206 BUS_SPACE_MAP_LINEAR, 207 0, &bh) != 0) { 208 printf("%s: cannot map pixels\n", self->dv_xname); 209 return; 210 } 211 sc->sc_fb.fb_pixels = (char *)bh; 212 } 213 214 sbus_establish(sd, &sc->sc_dev); 215 bwtwoattach(sc, name, isconsole); 216} 217 218static void 219bwtwo_set_video(sc, enable) 220 struct bwtwo_softc *sc; 221 int enable; 222{ 223 224 if (enable) 225 /* 226 * If the we're the console the PROM will have taken care 227 * of the FBC_TIMING bit and video control parameters. We 228 * simply turn on FBC_TIMING; in case other video parameters 229 * are necessary, here is a set read from an ELC: 230 * [0xbb,0x2b,0x4,0x14,0xae,0x3,0xa8,0x24,0x1,0x5,0xff,0x1] 231 */ 232 sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING; 233 else 234 sc->sc_reg->fbc_ctrl &= ~FBC_VENAB; 235} 236 237static int 238bwtwo_get_video(sc) 239 struct bwtwo_softc *sc; 240{ 241 242 return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0); 243} 244