1 /* $NetBSD: bwtwo_obio.c,v 1.18 2023/12/20 05:33:18 thorpej 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 * 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 (at) 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_obio.c,v 1.18 2023/12/20 05:33:18 thorpej 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/mman.h> 89 #include <sys/tty.h> 90 #include <sys/conf.h> 91 92 #include <machine/autoconf.h> 93 #include <machine/eeprom.h> 94 #include <machine/ctlreg.h> 95 #include <sparc/sparc/asm.h> 96 97 #include <dev/sun/fbio.h> 98 #include <dev/sun/fbvar.h> 99 #include <dev/sun/btreg.h> 100 #include <dev/sun/bwtworeg.h> 101 #include <dev/sun/bwtwovar.h> 102 #include <dev/sun/pfourreg.h> 103 104 /* autoconfiguration driver */ 105 static int bwtwomatch_obio(device_t, cfdata_t, void *); 106 static void bwtwoattach_obio(device_t, device_t, void *); 107 108 109 CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwo_softc), 110 bwtwomatch_obio, bwtwoattach_obio, NULL, NULL); 111 112 static int bwtwo_get_video_sun4(struct bwtwo_softc *); 113 static void bwtwo_set_video_sun4(struct bwtwo_softc *, int); 114 115 extern int fbnode; 116 117 static int 118 bwtwomatch_obio(device_t parent, cfdata_t cf, void *aux) 119 { 120 union obio_attach_args *uoba = aux; 121 struct obio4_attach_args *oba; 122 123 if (uoba->uoba_isobio4 == 0) 124 return (0); 125 126 oba = &uoba->uoba_oba4; 127 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 128 4, /* probe size */ 129 0, /* offset */ 130 0, /* flags */ 131 bwtwo_pfour_probe, cf)); 132 } 133 134 static void 135 bwtwoattach_obio(device_t parent, device_t self, void *aux) 136 { 137 struct bwtwo_softc *sc = device_private(self); 138 union obio_attach_args *uoba = aux; 139 struct obio4_attach_args *oba; 140 struct fbdevice *fb = &sc->sc_fb; 141 struct eeprom *eep = (struct eeprom *)eeprom_va; 142 bus_space_handle_t bh; 143 int constype, isconsole; 144 const char *name; 145 146 sc->sc_dev = self; 147 oba = &uoba->uoba_oba4; 148 149 /* Remember cookies for bwtwo_mmap() */ 150 sc->sc_bustag = oba->oba_bustag; 151 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 152 153 fb->fb_flags = device_cfdata(self)->cf_flags; 154 fb->fb_type.fb_depth = 1; 155 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 156 157 constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; 158 if (eep == NULL || eep->eeConsole == constype) 159 isconsole = fb_is_console(0); 160 else 161 isconsole = 0; 162 163 if (fb->fb_flags & FB_PFOUR) { 164 /* 165 * Map the pfour control register. 166 * Set pixel offset to appropriate overlay plane. 167 */ 168 name = "bwtwo/p4"; 169 170 if (bus_space_map(oba->oba_bustag, 171 oba->oba_paddr, 172 sizeof(uint32_t), 173 BUS_SPACE_MAP_LINEAR, 174 &bh) != 0) { 175 printf("%s: cannot map pfour register\n", 176 device_xname(self)); 177 return; 178 } 179 fb->fb_pfour = (uint32_t *)bh; 180 sc->sc_reg = NULL; 181 182 /* 183 * Notice if this is an overlay plane on a color 184 * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY 185 * is the same as PFOUR_BW_OFF, but we use the 186 * different names anyway. 187 */ 188 switch (PFOUR_ID(*fb->fb_pfour)) { 189 case PFOUR_ID_COLOR8P1: 190 sc->sc_ovtype = BWO_CGFOUR; 191 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 192 break; 193 194 case PFOUR_ID_COLOR24: 195 sc->sc_ovtype = BWO_CGEIGHT; 196 sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; 197 break; 198 199 default: 200 sc->sc_ovtype = BWO_NONE; 201 sc->sc_pixeloffset = PFOUR_BW_OFF; 202 break; 203 } 204 205 } else { 206 /* A plain bwtwo */ 207 if (bus_space_map(oba->oba_bustag, 208 oba->oba_paddr + BWREG_REG, 209 sizeof(struct fbcontrol), 210 BUS_SPACE_MAP_LINEAR, 211 &bh) != 0) { 212 printf("%s: cannot map control registers\n", 213 device_xname(self)); 214 return; 215 } 216 sc->sc_reg = (struct fbcontrol *)bh; 217 fb->fb_pfour = NULL; 218 219 name = "bwtwo"; 220 sc->sc_pixeloffset = BWREG_MEM; 221 } 222 sc->sc_get_video = bwtwo_get_video_sun4; 223 sc->sc_set_video = bwtwo_set_video_sun4; 224 225 if (isconsole) { 226 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; 227 if (bus_space_map(oba->oba_bustag, 228 oba->oba_paddr + sc->sc_pixeloffset, 229 ramsize, 230 BUS_SPACE_MAP_LINEAR, 231 &bh) != 0) { 232 printf("%s: cannot map pixels\n", device_xname(self)); 233 return; 234 } 235 sc->sc_fb.fb_pixels = (char *)bh; 236 } 237 238 bwtwoattach(sc, name, isconsole); 239 } 240 241 static void 242 bwtwo_set_video_sun4(struct bwtwo_softc *sc, int enable) 243 { 244 245 if (sc->sc_fb.fb_flags & FB_PFOUR) { 246 /* 247 * This handles the overlay plane case, too. 248 */ 249 fb_pfour_set_video(&sc->sc_fb, enable); 250 return; 251 } 252 if (enable) 253 stba(AC_SYSENABLE, ASI_CONTROL, 254 lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); 255 else 256 stba(AC_SYSENABLE, ASI_CONTROL, 257 lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); 258 259 return; 260 } 261 262 static int 263 bwtwo_get_video_sun4(struct bwtwo_softc *sc) 264 { 265 266 if (sc->sc_fb.fb_flags & FB_PFOUR) { 267 /* 268 * This handles the overlay plane case, too. 269 */ 270 return (fb_pfour_get_video(&sc->sc_fb)); 271 } else 272 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); 273 } 274
Indexes created Sun Sep 21 20:09:37 GMT 2025