grf_obio.c revision 1.30
1 /* $NetBSD: grf_obio.c,v 1.30 1998/03/22 23:13:52 scottr 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 #define VALKYRIE_CONTROL_BASE 0x50f2A000 74 75 static int 76 grfiv_match(parent, cf, aux) 77 struct device *parent; 78 struct cfdata *cf; 79 void *aux; 80 { 81 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 82 bus_space_handle_t bsh; 83 int found, sense; 84 u_int base; 85 86 found = 1; 87 88 switch (current_mac_model->class) { 89 case MACH_CLASSQ: 90 /* 91 * Assume DAFB for all of these, unless we can't 92 * access the memory. 93 */ 94 base = QUADRA_DAFB_BASE; 95 96 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) { 97 panic("failed to map space for DAFB regs.\n"); 98 } 99 100 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1C, 4) == 0) { 101 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 102 found = 0; 103 goto nodafb; 104 } 105 106 sense = (bus_space_read_4(oa->oa_tag, bsh, 0x1C) & 7); 107 108 if (sense == 0) 109 found = 0; 110 111 /* Set "Turbo SCSI" configuration to default */ 112 bus_space_write_4(oa->oa_tag, bsh, 0x24, 0x1d1); /* ch0 */ 113 bus_space_write_4(oa->oa_tag, bsh, 0x28, 0x1d1); /* ch1 */ 114 115 /* Disable interrupts */ 116 bus_space_write_4(oa->oa_tag, bsh, 0x104, 0); 117 118 /* Clear any interrupts */ 119 bus_space_write_4(oa->oa_tag, bsh, 0x10C, 0); 120 bus_space_write_4(oa->oa_tag, bsh, 0x110, 0); 121 bus_space_write_4(oa->oa_tag, bsh, 0x114, 0); 122 123 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 124 break; 125 126 case MACH_CLASSAV: 127 base = CIVIC_CONTROL_BASE; 128 129 if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) { 130 panic("failed to map space for CIVIC control regs.\n"); 131 } 132 133 /* Disable interrupts */ 134 bus_space_write_1(oa->oa_tag, bsh, 0x120, 0); 135 136 bus_space_unmap(oa->oa_tag, bsh, 0x1000); 137 break; 138 139 case MACH_CLASSQ2: 140 if (current_mac_model->machineid == MACH_MACQ630) { 141 base = VALKYRIE_CONTROL_BASE; 142 143 if (bus_space_map(oa->oa_tag, base, 0x40, 0, &bsh)) { 144 panic("failed to map space for Valkyrie regs.\n"); 145 } 146 147 /* Disable interrupts */ 148 bus_space_write_1(oa->oa_tag, bsh, 0x18, 0x1); 149 } 150 break; 151 152 default: 153 nodafb: 154 if (mac68k_vidlog == 0) { 155 found = 0; 156 } 157 break; 158 } 159 160 return found; 161 } 162 163 #define R4(sc, o) (bus_space_read_4((sc)->sc_tag, (sc)->sc_regh, o) & 0xfff) 164 165 static void 166 grfiv_attach(parent, self, aux) 167 struct device *parent, *self; 168 void *aux; 169 { 170 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 171 struct grfbus_softc *sc; 172 struct grfmode *gm; 173 u_int base; 174 175 sc = (struct grfbus_softc *)self; 176 177 sc->card_id = 0; 178 179 switch (current_mac_model->class) { 180 case MACH_CLASSQ: 181 base = QUADRA_DAFB_BASE; 182 sc->sc_tag = oa->oa_tag; 183 if (bus_space_map(sc->sc_tag, base, 0x1000, 0, &sc->sc_regh)) { 184 panic("failed to map space for DAFB regs.\n"); 185 } 186 printf(": DAFB: Monitor sense %x.\n", R4(sc,0x1C)&7); 187 bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x1000); 188 break; 189 case MACH_CLASSQ2: 190 case MACH_CLASSAV: 191 default: 192 printf(": Internal Video\n"); 193 break; 194 } 195 196 gm = &(sc->curr_mode); 197 gm->mode_id = 0; 198 gm->psize = videobitdepth; 199 gm->ptype = 0; 200 gm->width = videosize & 0xffff; 201 gm->height = (videosize >> 16) & 0xffff; 202 gm->rowbytes = videorowbytes; 203 gm->hres = 80; /* XXX Hack */ 204 gm->vres = 80; /* XXX Hack */ 205 gm->fbsize = gm->rowbytes * gm->height; 206 gm->fbbase = (caddr_t)m68k_trunc_page(mac68k_vidlog); 207 gm->fboff = mac68k_vidlog & PGOFSET; 208 209 /* Perform common video attachment. */ 210 grf_establish(sc, NULL, grfiv_mode, grfiv_phys); 211 } 212 213 static int 214 grfiv_mode(sc, cmd, arg) 215 struct grf_softc *sc; 216 int cmd; 217 void *arg; 218 { 219 switch (cmd) { 220 case GM_GRFON: 221 case GM_GRFOFF: 222 return 0; 223 case GM_CURRMODE: 224 break; 225 case GM_NEWMODE: 226 break; 227 case GM_LISTMODES: 228 break; 229 } 230 return EINVAL; 231 } 232 233 static caddr_t 234 grfiv_phys(gp) 235 struct grf_softc *gp; 236 { 237 /* 238 * If we're using IIsi or similar, this will be 0. 239 * If we're using IIvx or similar, this will be correct. 240 */ 241 return (caddr_t)mac68k_vidphys; 242 } 243
Indexes created Wed Oct 22 13:09:56 GMT 2025