bwtwo_sbus.c revision 1.15
1/* $NetBSD: bwtwo_sbus.c,v 1.15 2004/03/17 17:04:58 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. 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_sbus.c,v 1.15 2004/03/17 17:04:58 pk 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 <machine/eeprom.h> 102 103#include <dev/sbus/sbusvar.h> 104 105#include <dev/sun/fbio.h> 106#include <dev/sun/fbvar.h> 107#include <dev/sun/btreg.h> 108#include <dev/sun/bwtworeg.h> 109#include <dev/sun/bwtwovar.h> 110#include <dev/sun/pfourreg.h> 111 112/* autoconfiguration driver */ 113static void bwtwoattach_sbus (struct device *, struct device *, void *); 114static int bwtwomatch_sbus (struct device *, struct cfdata *, void *); 115 116/* Allocate an `sbusdev' in addition to the bwtwo softc */ 117struct bwtwo_sbus_softc { 118 struct bwtwo_softc bss_softc; 119 struct sbusdev bss_sd; 120}; 121 122CFATTACH_DECL(bwtwo_sbus, sizeof(struct bwtwo_sbus_softc), 123 bwtwomatch_sbus, bwtwoattach_sbus, NULL, NULL); 124 125static int bwtwo_get_video (struct bwtwo_softc *); 126static void bwtwo_set_video (struct bwtwo_softc *, int); 127 128/* 129 * Match a bwtwo. 130 */ 131static int 132bwtwomatch_sbus(parent, cf, aux) 133 struct device *parent; 134 struct cfdata *cf; 135 void *aux; 136{ 137 struct sbus_attach_args *sa = aux; 138 139 return (strcmp(cf->cf_name, sa->sa_name) == 0); 140} 141 142 143/* 144 * Attach a display. We need to notice if it is the console, too. 145 */ 146void 147bwtwoattach_sbus(parent, self, args) 148 struct device *parent, *self; 149 void *args; 150{ 151 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 152 struct sbusdev *sd = &((struct bwtwo_sbus_softc *)self)->bss_sd; 153 struct sbus_attach_args *sa = args; 154 struct fbdevice *fb = &sc->sc_fb; 155 bus_space_handle_t bh; 156 int isconsole, node; 157 char *name; 158 159 node = sa->sa_node; 160 161 /* Remember cookies for bwtwo_mmap() */ 162 sc->sc_bustag = sa->sa_bustag; 163 sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); 164 165 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 166 fb->fb_type.fb_depth = 1; 167 fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node); 168 169 /* 170 * When the ROM has mapped in a bwtwo display, the address 171 * maps only the video RAM, hence we always map the control 172 * registers ourselves. We only need the video RAM if we are 173 * going to print characters via rconsole. 174 */ 175 if (sbus_bus_map(sa->sa_bustag, 176 sa->sa_slot, 177 sa->sa_offset + BWREG_REG, 178 sizeof(struct fbcontrol), 179 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 180 printf("%s: cannot map control registers\n", self->dv_xname); 181 return; 182 } 183 sc->sc_reg = (struct fbcontrol *)bus_space_vaddr(sa->sa_bustag, bh); 184 fb->fb_pfour = NULL; 185 186 sc->sc_pixeloffset = BWREG_MEM; 187 188 isconsole = fb_is_console(node); 189 name = prom_getpropstring(node, "model"); 190 191 /* Assume `bwtwo at sbus' only happens at sun4c's */ 192 sc->sc_get_video = bwtwo_get_video; 193 sc->sc_set_video = bwtwo_set_video; 194 195 if (sa->sa_npromvaddrs != 0) 196 sc->sc_fb.fb_pixels = (caddr_t)(u_long)sa->sa_promvaddrs[0]; 197 if (isconsole && sc->sc_fb.fb_pixels == NULL) { 198 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 199 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 200 sa->sa_offset + sc->sc_pixeloffset, 201 ramsize, 202 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 203 printf("%s: cannot map pixels\n", self->dv_xname); 204 return; 205 } 206 sc->sc_fb.fb_pixels = (char *)bus_space_vaddr(sa->sa_bustag, bh); 207 } 208 209 sbus_establish(sd, &sc->sc_dev); 210 bwtwoattach(sc, name, isconsole); 211} 212 213static void 214bwtwo_set_video(sc, enable) 215 struct bwtwo_softc *sc; 216 int enable; 217{ 218 219 if (enable) 220 /* 221 * If the we're the console the PROM will have taken care 222 * of the FBC_TIMING bit and video control parameters. We 223 * simply turn on FBC_TIMING; in case other video parameters 224 * are necessary, here is a set read from an ELC: 225 * [0xbb,0x2b,0x4,0x14,0xae,0x3,0xa8,0x24,0x1,0x5,0xff,0x1] 226 */ 227 sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING; 228 else 229 sc->sc_reg->fbc_ctrl &= ~FBC_VENAB; 230} 231 232static int 233bwtwo_get_video(sc) 234 struct bwtwo_softc *sc; 235{ 236 237 return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0); 238} 239