grf_nubus.c revision 1.16
1 /* $NetBSD: grf_nubus.c,v 1.16 1997/02/20 00:23:28 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 * Device-specific routines for handling Nubus-based video cards. 33 */ 34 35 #include <sys/param.h> 36 37 #include <sys/device.h> 38 #include <sys/ioctl.h> 39 #include <sys/file.h> 40 #include <sys/malloc.h> 41 #include <sys/mman.h> 42 #include <sys/proc.h> 43 #include <sys/systm.h> 44 45 #include <machine/bus.h> 46 #include <machine/cpu.h> 47 #include <machine/grfioctl.h> 48 #include <machine/viareg.h> 49 50 #include "nubus.h" 51 #include "grfvar.h" 52 53 static void load_image_data __P((caddr_t data, struct image_data *image)); 54 static void grfmv_intr __P((void *vsc, int slot)); 55 56 static char zero = 0; 57 58 static int grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 59 static caddr_t grfmv_phys __P((struct grf_softc *gp, vm_offset_t addr)); 60 static int grfmv_match __P((struct device *, struct cfdata *, void *)); 61 static void grfmv_attach __P((struct device *, struct device *, void *)); 62 63 struct cfdriver macvid_cd = { 64 NULL, "macvid", DV_DULL 65 }; 66 67 struct cfattach macvid_ca = { 68 sizeof(struct grfbus_softc), grfmv_match, grfmv_attach 69 }; 70 71 static void 72 load_image_data(data, image) 73 caddr_t data; 74 struct image_data *image; 75 { 76 bcopy(data , &image->size, 4); 77 bcopy(data + 4, &image->offset, 4); 78 bcopy(data + 8, &image->rowbytes, 2); 79 bcopy(data + 10, &image->top, 2); 80 bcopy(data + 12, &image->left, 2); 81 bcopy(data + 14, &image->bottom, 2); 82 bcopy(data + 16, &image->right, 2); 83 bcopy(data + 18, &image->version, 2); 84 bcopy(data + 20, &image->packType, 2); 85 bcopy(data + 22, &image->packSize, 4); 86 bcopy(data + 26, &image->hRes, 4); 87 bcopy(data + 30, &image->vRes, 4); 88 bcopy(data + 34, &image->pixelType, 2); 89 bcopy(data + 36, &image->pixelSize, 2); 90 bcopy(data + 38, &image->cmpCount, 2); 91 bcopy(data + 40, &image->cmpSize, 2); 92 bcopy(data + 42, &image->planeBytes, 4); 93 } 94 95 /*ARGSUSED*/ 96 static void 97 grfmv_intr(vsc, slot) 98 void *vsc; 99 int slot; 100 { 101 caddr_t slotbase; 102 struct grfbus_softc *sc; 103 104 sc = (struct grfbus_softc *) vsc; 105 slotbase = (caddr_t) sc->sc_slot.virtual_base; 106 slotbase[0xa0000] = zero; 107 } 108 109 static int 110 grfmv_match(parent, cf, aux) 111 struct device *parent; 112 struct cfdata *cf; 113 void *aux; 114 { 115 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 116 117 if (na->category != NUBUS_CATEGORY_DISPLAY) 118 return 0; 119 120 if (na->type != NUBUS_TYPE_VIDEO) 121 return 0; 122 123 if (na->drsw != NUBUS_DRSW_APPLE) 124 return 0; 125 126 /* 127 * If we've gotten this far, then we're dealing with a real-live 128 * Apple QuickDraw-compatible display card resource. Now, how to 129 * determine that this is an active resource??? Dunno. But we'll 130 * proceed like it is. 131 */ 132 133 return 1; 134 } 135 136 static void 137 grfmv_attach(parent, self, aux) 138 struct device *parent, *self; 139 void *aux; 140 { 141 struct grfbus_softc *sc = (struct grfbus_softc *) self; 142 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 143 struct image_data image_store, image; 144 struct grfmode *gm; 145 char cardname[CARD_NAME_LEN]; 146 nubus_dirent dirent; 147 nubus_dir dir, mode_dir; 148 int mode; 149 150 sc->card_id = na->drhw; 151 152 bcopy(na->fmt, &sc->sc_slot, sizeof(nubus_slot)); 153 154 nubus_get_main_dir(&sc->sc_slot, &dir); 155 156 if (nubus_find_rsrc(&sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) 157 return; 158 159 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir); 160 161 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, 162 NUBUS_RSRC_TYPE, &dirent) <= 0) 163 if ((na->rsrcid != 128) || 164 (nubus_find_rsrc(&sc->sc_slot, &dir, 129, &dirent) <= 0)) 165 return; 166 167 mode = NUBUS_RSRC_FIRSTMODE; 168 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) { 169 printf("\n%s: probe failed to get board rsrc.\n", 170 sc->sc_dev.dv_xname); 171 return; 172 } 173 174 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 175 176 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) 177 <= 0) { 178 printf("\n%s: probe failed to get mode dir.\n", 179 sc->sc_dev.dv_xname); 180 return; 181 } 182 183 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 184 sizeof(struct image_data)) <= 0) { 185 printf("\n%s: probe failed to get indirect mode data.\n", 186 sc->sc_dev.dv_xname); 187 return; 188 } 189 190 /* Need to load display info (and driver?), etc... (?) */ 191 192 load_image_data((caddr_t) &image_store, &image); 193 194 gm = &sc->curr_mode; 195 gm->mode_id = mode; 196 gm->fbbase = (caddr_t) (sc->sc_slot.virtual_base + image.offset); 197 gm->fboff = image.offset; 198 gm->rowbytes = image.rowbytes; 199 gm->width = image.right - image.left; 200 gm->height = image.bottom - image.top; 201 gm->fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 202 gm->hres = image.hRes; 203 gm->vres = image.vRes; 204 gm->ptype = image.pixelType; 205 gm->psize = image.pixelSize; 206 207 strncpy(cardname, nubus_get_card_name(&sc->sc_slot), 208 CARD_NAME_LEN); 209 cardname[CARD_NAME_LEN-1] = '\0'; 210 211 printf(": %s\n", cardname); 212 213 add_nubus_intr(sc->sc_slot.slot, grfmv_intr, sc); 214 215 /* Perform common video attachment. */ 216 grf_establish(sc, &sc->sc_slot, grfmv_mode, grfmv_phys); 217 } 218 219 static int 220 grfmv_mode(gp, cmd, arg) 221 struct grf_softc *gp; 222 int cmd; 223 void *arg; 224 { 225 switch (cmd) { 226 case GM_GRFON: 227 case GM_GRFOFF: 228 return 0; 229 case GM_CURRMODE: 230 break; 231 case GM_NEWMODE: 232 break; 233 case GM_LISTMODES: 234 break; 235 } 236 return EINVAL; 237 } 238 239 static caddr_t 240 grfmv_phys(gp, addr) 241 struct grf_softc *gp; 242 vm_offset_t addr; 243 { 244 return (caddr_t) (NUBUS_SLOT_TO_PADDR(gp->sc_slot->slot) + 245 (addr - gp->sc_slot->virtual_base)); 246 } 247
Indexes created Tue Sep 30 20:09:53 GMT 2025