grf_obio.c revision 1.28
1 /* $NetBSD: grf_obio.c,v 1.28 1998/01/12 19:22:05 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Allen Briggs. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Allen Briggs. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /* 32 * Graphics display driver for the Macintosh internal video for machines 33 * that don't map it into a fake nubus card. 34 */ 35 36 #include <sys/param.h> 37 38 #include <sys/device.h> 39 #include <sys/ioctl.h> 40 #include <sys/file.h> 41 #include <sys/malloc.h> 42 #include <sys/mman.h> 43 #include <sys/proc.h> 44 #include <sys/systm.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/bus.h> 48 #include <machine/cpu.h> 49 #include <machine/grfioctl.h> 50 #include <machine/viareg.h> 51 52 #include <mac68k/dev/nubus.h> 53 #include <mac68k/dev/obiovar.h> 54 #include <mac68k/dev/grfvar.h> 55 56 extern u_int32_t mac68k_vidlog; 57 extern u_int32_t mac68k_vidphys; 58 extern long videorowbytes; 59 extern long videobitdepth; 60 extern u_long videosize; 61 62 static int grfiv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 63 static caddr_t grfiv_phys __P((struct grf_softc *gp)); 64 static int grfiv_match __P((struct device *, struct cfdata *, void *)); 65 static void grfiv_attach __P((struct device *, struct device *, void *)); 66 67 struct cfattach intvid_ca = { 68 sizeof(struct grfbus_softc), grfiv_match, grfiv_attach 69 }; 70 71 #define QUADRA_DAFB_BASE 0xF9800000 72 #define CIVIC_CONTROL_BASE 0x50036000 73 74 static int 75 grfiv_match(parent, cf, aux) 76 struct device *parent; 77 struct cfdata *cf; 78 void *aux; 79 { 80 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 81 bus_space_handle_t bsh; 82 int found, sense; 83 u_int base; 84 85 found = 1; 86 87 switch (current_mac_model->class) { 88 case MACH_CLASSQ: 89 /* 90 * Assume DAFB for all of these, unless we can't 91 * access the memory. 92 */ 93 base = QUADRA_DAFB_BASE; 94 95 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) { 96 panic("failed to map space for DAFB regs.\n"); 97 } 98 99 if (bus_probe(oa->oa_tag, bsh, 0x1C, 4) == 0) { 100 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 101 found = 0; 102 goto nodafb; 103 } 104 105 sense = (bus_space_read_4(oa->oa_tag, bsh, 0x1C) & 7); 106 107 if (sense == 0) 108 found = 0; 109 110 /* Set "Turbo SCSI" configuration to default */ 111 bus_space_write_4(oa->oa_tag, bsh, 0x24, 0x1d1); /* ch0 */ 112 bus_space_write_4(oa->oa_tag, bsh, 0x28, 0x1d1); /* ch1 */ 113 114 /* Disable interrupts */ 115 bus_space_write_4(oa->oa_tag, bsh, 0x104, 0); 116 117 /* Clear any interrupts */ 118 bus_space_write_4(oa->oa_tag, bsh, 0x10C, 0); 119 bus_space_write_4(oa->oa_tag, bsh, 0x110, 0); 120 bus_space_write_4(oa->oa_tag, bsh, 0x114, 0); 121 122 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 123 break; 124 125 case MACH_CLASSAV: 126 base = CIVIC_CONTROL_BASE; 127 128 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) { 129 panic("failed to map space for CIVIC control regs.\n"); 130 } 131 132 /* Disable interrupts */ 133 bus_space_write_1(oa->oa_tag, bsh, 0x120, 0); 134 135 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 136 break; 137 138 case MACH_CLASSQ2: 139 break; 140 141 default: 142 nodafb: 143 if (mac68k_vidlog == 0) { 144 found = 0; 145 } 146 break; 147 } 148 149 return found; 150 } 151 152 #define R4(sc, o) (bus_space_read_4((sc)->sc_tag, (sc)->sc_regh, o) & 0xfff) 153 154 static void 155 grfiv_attach(parent, self, aux) 156 struct device *parent, *self; 157 void *aux; 158 { 159 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 160 struct grfbus_softc *sc; 161 struct grfmode *gm; 162 u_int base; 163 164 sc = (struct grfbus_softc *)self; 165 166 sc->card_id = 0; 167 168 switch (current_mac_model->class) { 169 case MACH_CLASSQ: 170 base = QUADRA_DAFB_BASE; 171 sc->sc_tag = oa->oa_tag; 172 if (bus_space_map(sc->sc_tag, base, 0x1000, 0, &sc->sc_regh)) { 173 panic("failed to map space for DAFB regs.\n"); 174 } 175 printf(": DAFB: Monitor sense %x.\n", R4(sc,0x1C)&7); 176 bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x1000); 177 break; 178 case MACH_CLASSQ2: 179 case MACH_CLASSAV: 180 default: 181 printf(": Internal Video\n"); 182 break; 183 } 184 185 gm = &(sc->curr_mode); 186 gm->mode_id = 0; 187 gm->psize = videobitdepth; 188 gm->ptype = 0; 189 gm->width = videosize & 0xffff; 190 gm->height = (videosize >> 16) & 0xffff; 191 gm->rowbytes = videorowbytes; 192 gm->hres = 80; /* XXX Hack */ 193 gm->vres = 80; /* XXX Hack */ 194 gm->fbsize = gm->rowbytes * gm->height; 195 gm->fbbase = (caddr_t)m68k_trunc_page(mac68k_vidlog); 196 gm->fboff = mac68k_vidlog & PGOFSET; 197 198 /* Perform common video attachment. */ 199 grf_establish(sc, NULL, grfiv_mode, grfiv_phys); 200 } 201 202 static int 203 grfiv_mode(sc, cmd, arg) 204 struct grf_softc *sc; 205 int cmd; 206 void *arg; 207 { 208 switch (cmd) { 209 case GM_GRFON: 210 case GM_GRFOFF: 211 return 0; 212 case GM_CURRMODE: 213 break; 214 case GM_NEWMODE: 215 break; 216 case GM_LISTMODES: 217 break; 218 } 219 return EINVAL; 220 } 221 222 static caddr_t 223 grfiv_phys(gp) 224 struct grf_softc *gp; 225 { 226 /* 227 * If we're using IIsi or similar, this will be 0. 228 * If we're using IIvx or similar, this will be correct. 229 */ 230 return (caddr_t)mac68k_vidphys; 231 } 232
Indexes created Mon Oct 20 05:10:11 GMT 2025