grf_nubus.c revision 1.15
1 /* $NetBSD: grf_nubus.c,v 1.15 1996/12/16 16:17:06 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/cpu.h> 46 #include <machine/grfioctl.h> 47 #include <machine/viareg.h> 48 49 #include "nubus.h" 50 #include "grfvar.h" 51 52 static void load_image_data __P((caddr_t data, struct image_data *image)); 53 static void grfmv_intr __P((void *vsc, int slot)); 54 55 static char zero = 0; 56 57 static int grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 58 static caddr_t grfmv_phys __P((struct grf_softc *gp, vm_offset_t addr)); 59 static int grfmv_match __P((struct device *, struct cfdata *, void *)); 60 static void grfmv_attach __P((struct device *, struct device *, void *)); 61 62 struct cfdriver macvid_cd = { 63 NULL, "macvid", DV_DULL 64 }; 65 66 struct cfattach macvid_ca = { 67 sizeof(struct grfbus_softc), grfmv_match, grfmv_attach 68 }; 69 70 static void 71 load_image_data(data, image) 72 caddr_t data; 73 struct image_data *image; 74 { 75 bcopy(data , &image->size, 4); 76 bcopy(data + 4, &image->offset, 4); 77 bcopy(data + 8, &image->rowbytes, 2); 78 bcopy(data + 10, &image->top, 2); 79 bcopy(data + 12, &image->left, 2); 80 bcopy(data + 14, &image->bottom, 2); 81 bcopy(data + 16, &image->right, 2); 82 bcopy(data + 18, &image->version, 2); 83 bcopy(data + 20, &image->packType, 2); 84 bcopy(data + 22, &image->packSize, 4); 85 bcopy(data + 26, &image->hRes, 4); 86 bcopy(data + 30, &image->vRes, 4); 87 bcopy(data + 34, &image->pixelType, 2); 88 bcopy(data + 36, &image->pixelSize, 2); 89 bcopy(data + 38, &image->cmpCount, 2); 90 bcopy(data + 40, &image->cmpSize, 2); 91 bcopy(data + 42, &image->planeBytes, 4); 92 } 93 94 /*ARGSUSED*/ 95 static void 96 grfmv_intr(vsc, slot) 97 void *vsc; 98 int slot; 99 { 100 caddr_t slotbase; 101 struct grfbus_softc *sc; 102 103 sc = (struct grfbus_softc *) vsc; 104 slotbase = (caddr_t) sc->sc_slot.virtual_base; 105 slotbase[0xa0000] = zero; 106 } 107 108 static int 109 grfmv_match(parent, cf, aux) 110 struct device *parent; 111 struct cfdata *cf; 112 void *aux; 113 { 114 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 115 116 if (na->category != NUBUS_CATEGORY_DISPLAY) 117 return 0; 118 119 if (na->type != NUBUS_TYPE_VIDEO) 120 return 0; 121 122 if (na->drsw != NUBUS_DRSW_APPLE) 123 return 0; 124 125 /* 126 * If we've gotten this far, then we're dealing with a real-live 127 * Apple QuickDraw-compatible display card resource. Now, how to 128 * determine that this is an active resource??? Dunno. But we'll 129 * proceed like it is. 130 */ 131 132 return 1; 133 } 134 135 static void 136 grfmv_attach(parent, self, aux) 137 struct device *parent, *self; 138 void *aux; 139 { 140 struct grfbus_softc *sc = (struct grfbus_softc *) self; 141 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 142 struct image_data image_store, image; 143 struct grfmode *gm; 144 char cardname[CARD_NAME_LEN]; 145 nubus_dirent dirent; 146 nubus_dir dir, mode_dir; 147 int mode; 148 149 sc->card_id = na->drhw; 150 151 bcopy(na->fmt, &sc->sc_slot, sizeof(nubus_slot)); 152 153 nubus_get_main_dir(&sc->sc_slot, &dir); 154 155 if (nubus_find_rsrc(&sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) 156 return; 157 158 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir); 159 160 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, 161 NUBUS_RSRC_TYPE, &dirent) <= 0) 162 if ((na->rsrcid != 128) || 163 (nubus_find_rsrc(&sc->sc_slot, &dir, 129, &dirent) <= 0)) 164 return; 165 166 mode = NUBUS_RSRC_FIRSTMODE; 167 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) { 168 printf("\n%s: probe failed to get board rsrc.\n", 169 sc->sc_dev.dv_xname); 170 return; 171 } 172 173 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 174 175 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) 176 <= 0) { 177 printf("\n%s: probe failed to get mode dir.\n", 178 sc->sc_dev.dv_xname); 179 return; 180 } 181 182 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 183 sizeof(struct image_data)) <= 0) { 184 printf("\n%s: probe failed to get indirect mode data.\n", 185 sc->sc_dev.dv_xname); 186 return; 187 } 188 189 /* Need to load display info (and driver?), etc... (?) */ 190 191 load_image_data((caddr_t) &image_store, &image); 192 193 gm = &sc->curr_mode; 194 gm->mode_id = mode; 195 gm->fbbase = (caddr_t) (sc->sc_slot.virtual_base + image.offset); 196 gm->fboff = image.offset; 197 gm->rowbytes = image.rowbytes; 198 gm->width = image.right - image.left; 199 gm->height = image.bottom - image.top; 200 gm->fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 201 gm->hres = image.hRes; 202 gm->vres = image.vRes; 203 gm->ptype = image.pixelType; 204 gm->psize = image.pixelSize; 205 206 strncpy(cardname, nubus_get_card_name(&sc->sc_slot), 207 CARD_NAME_LEN); 208 cardname[CARD_NAME_LEN-1] = '\0'; 209 210 printf(": %s\n", cardname); 211 212 add_nubus_intr(sc->sc_slot.slot, grfmv_intr, sc); 213 214 /* Perform common video attachment. */ 215 grf_establish(sc, &sc->sc_slot, grfmv_mode, grfmv_phys); 216 } 217 218 static int 219 grfmv_mode(gp, cmd, arg) 220 struct grf_softc *gp; 221 int cmd; 222 void *arg; 223 { 224 switch (cmd) { 225 case GM_GRFON: 226 case GM_GRFOFF: 227 return 0; 228 case GM_CURRMODE: 229 break; 230 case GM_NEWMODE: 231 break; 232 case GM_LISTMODES: 233 break; 234 } 235 return EINVAL; 236 } 237 238 static caddr_t 239 grfmv_phys(gp, addr) 240 struct grf_softc *gp; 241 vm_offset_t addr; 242 { 243 return (caddr_t) (NUBUS_SLOT_TO_PADDR(gp->sc_slot->slot) + 244 (addr - gp->sc_slot->virtual_base)); 245 } 246
Indexes created Tue Sep 30 20:09:53 GMT 2025