grf_nubus.c revision 1.7
1 /* $NetBSD: grf_nubus.c,v 1.7 1995/08/24 04:27:16 briggs 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 44 #include <machine/grfioctl.h> 45 #include <machine/cpu.h> 46 47 #include "nubus.h" 48 #include "grfvar.h" 49 50 extern int grfmv_probe __P((struct grf_softc *gp, nubus_slot *slot)); 51 extern int grfmv_init __P((struct grf_softc *gp)); 52 extern int grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 53 54 static char zero = 0; 55 56 static void 57 load_image_data(data, image) 58 caddr_t data; 59 struct image_data *image; 60 { 61 bcopy(data , &image->size, 4); 62 bcopy(data + 4, &image->offset, 4); 63 bcopy(data + 8, &image->rowbytes, 2); 64 bcopy(data + 10, &image->top, 2); 65 bcopy(data + 12, &image->left, 2); 66 bcopy(data + 14, &image->bottom, 2); 67 bcopy(data + 16, &image->right, 2); 68 bcopy(data + 18, &image->version, 2); 69 bcopy(data + 20, &image->packType, 2); 70 bcopy(data + 22, &image->packSize, 4); 71 bcopy(data + 26, &image->hRes, 4); 72 bcopy(data + 30, &image->vRes, 4); 73 bcopy(data + 34, &image->pixelType, 2); 74 bcopy(data + 36, &image->pixelSize, 2); 75 bcopy(data + 38, &image->cmpCount, 2); 76 bcopy(data + 40, &image->cmpSize, 2); 77 bcopy(data + 42, &image->planeBytes, 4); 78 } 79 80 static void 81 grfmv_intr(sc, slot) 82 struct grf_softc *sc; 83 int slot; 84 { 85 struct grf_softc *gp; 86 caddr_t slotbase; 87 88 slotbase = (caddr_t) NUBUS_SLOT_TO_BASE(slot); 89 slotbase[0xa0000] = zero; 90 } 91 92 static int 93 get_vrsrcid(slot) 94 nubus_slot *slot; 95 { 96 extern u_short mac68k_vrsrc_vec[]; 97 extern int mac68k_vrsrc_cnt; 98 int i; 99 100 for (i = 0 ; i < 6 ; i++) 101 if ((mac68k_vrsrc_vec[i] & 0xff) == slot->slot) 102 return ((mac68k_vrsrc_vec[i] >> 8) & 0xff); 103 return 0x80; 104 } 105 106 extern int 107 grfmv_probe(sc, slot) 108 struct grf_softc *sc; 109 nubus_slot *slot; 110 { 111 nubus_dir dir, *dirp, dir2, *dirp2; 112 nubus_dirent dirent, *direntp; 113 nubus_type slottype; 114 int vrsrc; 115 116 dirp = &dir; 117 direntp = &dirent; 118 nubus_get_main_dir(slot, dirp); 119 120 vrsrc = get_vrsrcid(slot); 121 if (nubus_find_rsrc(slot, dirp, vrsrc, direntp) <= 0) { 122 if ( (vrsrc != 128) 123 || (nubus_find_rsrc(slot, dirp, 129, direntp) <= 0)) { 124 return 0; 125 } 126 } 127 128 dirp2 = (nubus_dir *) &sc->board_dir; 129 nubus_get_dir_from_rsrc(slot, direntp, dirp2); 130 131 if (nubus_find_rsrc(slot, dirp2, NUBUS_RSRC_TYPE, direntp) <= 0) 132 /* Type is a required entry... This should never happen. */ 133 return 0; 134 135 if (nubus_get_ind_data(slot, direntp, 136 (caddr_t) &slottype, sizeof(nubus_type)) <= 0) 137 return 0; 138 139 if (slottype.category != NUBUS_CATEGORY_DISPLAY) 140 return 0; 141 142 if (slottype.type != NUBUS_TYPE_VIDEO) 143 return 0; 144 145 if (slottype.drsw != NUBUS_DRSW_APPLE) 146 return 0; 147 148 /* 149 * If we've gotten this far, then we're dealing with a real-live 150 * Apple QuickDraw-compatible display card resource. Now, how to 151 * determine that this is an active resource??? Dunno. But we'll 152 * proceed like it is. 153 */ 154 155 sc->card_id = slottype.drhw; 156 157 /* Need to load display info (and driver?), etc... */ 158 159 return 1; 160 } 161 162 extern int 163 grfmv_init(sc) 164 struct grf_softc *sc; 165 { 166 struct image_data image_store, image; 167 nubus_dirent dirent; 168 nubus_dir mode_dir; 169 int mode; 170 u_long base; 171 172 mode = NUBUS_RSRC_FIRSTMODE; 173 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) 174 return 0; 175 176 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 177 178 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) <= 0) 179 return 0; 180 181 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 182 sizeof(struct image_data)) <= 0) 183 return 0; 184 185 load_image_data((caddr_t) &image_store, &image); 186 187 base = NUBUS_SLOT_TO_BASE(sc->sc_slot.slot); 188 189 sc->curr_mode.mode_id = mode; 190 sc->curr_mode.fbbase = (caddr_t) (base + image.offset); 191 sc->curr_mode.fboff = image.offset; 192 sc->curr_mode.rowbytes = image.rowbytes; 193 sc->curr_mode.width = image.right - image.left; 194 sc->curr_mode.height = image.bottom - image.top; 195 sc->curr_mode.fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 196 sc->curr_mode.hres = image.hRes; 197 sc->curr_mode.vres = image.vRes; 198 sc->curr_mode.ptype = image.pixelType; 199 sc->curr_mode.psize = image.pixelSize; 200 201 strncpy(sc->card_name, nubus_get_card_name(&sc->sc_slot), 202 CARD_NAME_LEN); 203 204 sc->card_name[CARD_NAME_LEN-1] = '\0'; 205 206 add_nubus_intr(sc->sc_slot.slot, grfmv_intr, sc); 207 208 return 1; 209 } 210 211 extern int 212 grfmv_mode(gp, cmd, arg) 213 struct grf_softc *gp; 214 int cmd; 215 void *arg; 216 { 217 switch (cmd) { 218 case GM_GRFON: 219 case GM_GRFOFF: 220 return 0; 221 case GM_CURRMODE: 222 break; 223 case GM_NEWMODE: 224 break; 225 case GM_LISTMODES: 226 break; 227 } 228 return EINVAL; 229 } 230 231 extern caddr_t 232 grfmv_phys(gp, addr) 233 struct grf_softc *gp; 234 vm_offset_t addr; 235 { 236 return (caddr_t) NUBUS_VIRT_TO_PHYS(addr); 237 } 238
Indexes created Tue Sep 30 20:09:53 GMT 2025