1 /* $NetBSD: bwtwo_sbus.c,v 1.6 2002/03/11 16:00:55 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/cdefs.h> 93 __KERNEL_RCSID(0, "$NetBSD: bwtwo_sbus.c,v 1.6 2002/03/11 16:00:55 pk Exp $"); 94 95 #include <sys/param.h> 96 #include <sys/systm.h> 97 #include <sys/device.h> 98 #include <sys/ioctl.h> 99 #include <sys/malloc.h> 100 #include <sys/mman.h> 101 #include <sys/tty.h> 102 #include <sys/conf.h> 103 104 #include <machine/autoconf.h> 105 #include <machine/eeprom.h> 106 #include <machine/conf.h> 107 108 #include <dev/sbus/sbusvar.h> 109 110 #include <dev/sun/fbio.h> 111 #include <dev/sun/fbvar.h> 112 #include <dev/sun/btreg.h> 113 #include <dev/sun/bwtworeg.h> 114 #include <dev/sun/bwtwovar.h> 115 #include <dev/sun/pfourreg.h> 116 117 /* autoconfiguration driver */ 118 static void bwtwoattach_sbus (struct device *, struct device *, void *); 119 static int bwtwomatch_sbus (struct device *, struct cfdata *, void *); 120 121 /* Allocate an `sbusdev' in addition to the bwtwo softc */ 122 struct bwtwo_sbus_softc { 123 struct bwtwo_softc bss_softc; 124 struct sbusdev bss_sd; 125 }; 126 127 struct cfattach bwtwo_sbus_ca = { 128 sizeof(struct bwtwo_sbus_softc), bwtwomatch_sbus, bwtwoattach_sbus 129 }; 130 131 static int bwtwo_get_video (struct bwtwo_softc *); 132 static void bwtwo_set_video (struct bwtwo_softc *, int); 133 134 /* 135 * Match a bwtwo. 136 */ 137 static int 138 bwtwomatch_sbus(parent, cf, aux) 139 struct device *parent; 140 struct cfdata *cf; 141 void *aux; 142 { 143 struct sbus_attach_args *sa = aux; 144 145 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 146 } 147 148 149 /* 150 * Attach a display. We need to notice if it is the console, too. 151 */ 152 void 153 bwtwoattach_sbus(parent, self, args) 154 struct device *parent, *self; 155 void *args; 156 { 157 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 158 struct sbusdev *sd = &((struct bwtwo_sbus_softc *)self)->bss_sd; 159 struct sbus_attach_args *sa = args; 160 struct fbdevice *fb = &sc->sc_fb; 161 bus_space_handle_t bh; 162 int isconsole, node; 163 char *name; 164 165 node = sa->sa_node; 166 167 /* Remember cookies for bwtwo_mmap() */ 168 sc->sc_bustag = sa->sa_bustag; 169 sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); 170 171 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 172 fb->fb_type.fb_depth = 1; 173 fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node); 174 175 /* 176 * When the ROM has mapped in a bwtwo display, the address 177 * maps only the video RAM, hence we always map the control 178 * registers ourselves. We only need the video RAM if we are 179 * going to print characters via rconsole. 180 */ 181 if (sbus_bus_map(sa->sa_bustag, 182 sa->sa_slot, 183 sa->sa_offset + BWREG_REG, 184 sizeof(struct fbcontrol), 185 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 186 printf("%s: cannot map control registers\n", self->dv_xname); 187 return; 188 } 189 sc->sc_reg = (struct fbcontrol *)bh; 190 fb->fb_pfour = NULL; 191 192 sc->sc_pixeloffset = BWREG_MEM; 193 194 isconsole = fb_is_console(node); 195 name = PROM_getpropstring(node, "model"); 196 197 /* Assume `bwtwo at sbus' only happens at sun4c's */ 198 sc->sc_get_video = bwtwo_get_video; 199 sc->sc_set_video = bwtwo_set_video; 200 201 if (sa->sa_npromvaddrs != 0) 202 sc->sc_fb.fb_pixels = (caddr_t)(u_long)sa->sa_promvaddrs[0]; 203 if (isconsole && sc->sc_fb.fb_pixels == NULL) { 204 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 205 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 206 sa->sa_offset + sc->sc_pixeloffset, 207 ramsize, 208 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 209 printf("%s: cannot map pixels\n", self->dv_xname); 210 return; 211 } 212 sc->sc_fb.fb_pixels = (char *)bh; 213 } 214 215 sbus_establish(sd, &sc->sc_dev); 216 bwtwoattach(sc, name, isconsole); 217 } 218 219 static void 220 bwtwo_set_video(sc, enable) 221 struct bwtwo_softc *sc; 222 int enable; 223 { 224 225 if (enable) 226 /* 227 * If the we're the console the PROM will have taken care 228 * of the FBC_TIMING bit and video control parameters. We 229 * simply turn on FBC_TIMING; in case other video parameters 230 * are necessary, here is a set read from an ELC: 231 * [0xbb,0x2b,0x4,0x14,0xae,0x3,0xa8,0x24,0x1,0x5,0xff,0x1] 232 */ 233 sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING; 234 else 235 sc->sc_reg->fbc_ctrl &= ~FBC_VENAB; 236 } 237 238 static int 239 bwtwo_get_video(sc) 240 struct bwtwo_softc *sc; 241 { 242 243 return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0); 244 } 245