grf_nubus.c revision 1.14
1 /* $NetBSD: grf_nubus.c,v 1.14 1996/10/13 03:21:19 christos 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 static int get_vrsrcid __P((nubus_slot *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 *, void *, 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 get_vrsrcid(slot) 111 nubus_slot *slot; 112 { 113 extern u_short mac68k_vrsrc_vec[]; 114 int i; 115 116 for (i = 0 ; i < 6 ; i++) 117 if ((mac68k_vrsrc_vec[i] & 0xff) == slot->slot) 118 return ((mac68k_vrsrc_vec[i] >> 8) & 0xff); 119 return 0x80; 120 } 121 122 static int 123 grfmv_match(parent, self, aux) 124 struct device *parent; 125 void *self, *aux; 126 { 127 struct grfbus_softc *sc; 128 nubus_slot *slot = (nubus_slot *) aux; 129 nubus_dir dir, *dirp, *dirp2; 130 nubus_dirent dirent, *direntp; 131 nubus_type slottype; 132 int vrsrc; 133 134 sc = (struct grfbus_softc *) self; /* XXX: indirect brokenness */ 135 dirp = &dir; 136 direntp = &dirent; 137 nubus_get_main_dir(slot, dirp); 138 139 vrsrc = get_vrsrcid(slot); 140 if (nubus_find_rsrc(slot, dirp, vrsrc, direntp) <= 0) { 141 if ( (vrsrc != 128) 142 || (nubus_find_rsrc(slot, dirp, 129, direntp) <= 0)) { 143 return 0; 144 } 145 } 146 147 dirp2 = (nubus_dir *) &sc->board_dir; 148 nubus_get_dir_from_rsrc(slot, direntp, dirp2); 149 150 if (nubus_find_rsrc(slot, dirp2, NUBUS_RSRC_TYPE, direntp) <= 0) 151 /* Type is a required entry... This should never happen. */ 152 return 0; 153 154 if (nubus_get_ind_data(slot, direntp, 155 (caddr_t) &slottype, sizeof(nubus_type)) <= 0) 156 return 0; 157 158 if (slottype.category != NUBUS_CATEGORY_DISPLAY) 159 return 0; 160 161 if (slottype.type != NUBUS_TYPE_VIDEO) 162 return 0; 163 164 if (slottype.drsw != NUBUS_DRSW_APPLE) 165 return 0; 166 167 /* 168 * If we've gotten this far, then we're dealing with a real-live 169 * Apple QuickDraw-compatible display card resource. Now, how to 170 * determine that this is an active resource??? Dunno. But we'll 171 * proceed like it is. 172 */ 173 174 sc->card_id = slottype.drhw; 175 176 sc->sc_slot = *slot; 177 178 /* Need to load display info (and driver?), etc... */ 179 180 return 1; 181 } 182 183 static void 184 grfmv_attach(parent, self, aux) 185 struct device *parent, *self; 186 void *aux; 187 { 188 struct grfbus_softc *sc; 189 struct image_data image_store, image; 190 struct grfmode *gm; 191 char cardname[CARD_NAME_LEN]; 192 nubus_dirent dirent; 193 nubus_dir mode_dir; 194 int mode; 195 196 sc = (struct grfbus_softc *) self; 197 gm = &sc->curr_mode; 198 199 mode = NUBUS_RSRC_FIRSTMODE; 200 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) { 201 printf("\n%s: probe failed to get board rsrc.\n", 202 sc->sc_dev.dv_xname); 203 return; 204 } 205 206 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 207 208 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) 209 <= 0) { 210 printf("\n%s: probe failed to get mode dir.\n", 211 sc->sc_dev.dv_xname); 212 return; 213 } 214 215 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 216 sizeof(struct image_data)) <= 0) { 217 printf("\n%s: probe failed to get indirect mode data.\n", 218 sc->sc_dev.dv_xname); 219 return; 220 } 221 222 load_image_data((caddr_t) &image_store, &image); 223 224 gm->mode_id = mode; 225 gm->fbbase = (caddr_t) (sc->sc_slot.virtual_base + image.offset); 226 gm->fboff = image.offset; 227 gm->rowbytes = image.rowbytes; 228 gm->width = image.right - image.left; 229 gm->height = image.bottom - image.top; 230 gm->fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 231 gm->hres = image.hRes; 232 gm->vres = image.vRes; 233 gm->ptype = image.pixelType; 234 gm->psize = image.pixelSize; 235 236 strncpy(cardname, nubus_get_card_name(&sc->sc_slot), 237 CARD_NAME_LEN); 238 cardname[CARD_NAME_LEN-1] = '\0'; 239 240 printf(": %s\n", cardname); 241 242 add_nubus_intr(sc->sc_slot.slot, grfmv_intr, sc); 243 244 /* Perform common video attachment. */ 245 grf_establish(sc, &sc->sc_slot, grfmv_mode, grfmv_phys); 246 } 247 248 static int 249 grfmv_mode(gp, cmd, arg) 250 struct grf_softc *gp; 251 int cmd; 252 void *arg; 253 { 254 switch (cmd) { 255 case GM_GRFON: 256 case GM_GRFOFF: 257 return 0; 258 case GM_CURRMODE: 259 break; 260 case GM_NEWMODE: 261 break; 262 case GM_LISTMODES: 263 break; 264 } 265 return EINVAL; 266 } 267 268 static caddr_t 269 grfmv_phys(gp, addr) 270 struct grf_softc *gp; 271 vm_offset_t addr; 272 { 273 return (caddr_t) (NUBUS_SLOT_TO_PADDR(gp->sc_slot->slot) + 274 (addr - gp->sc_slot->virtual_base)); 275 } 276
Indexes created Tue Sep 30 20:09:53 GMT 2025