grf_nubus.c revision 1.1
1 /* $NetBSD: grf_nubus.c,v 1.1 1995/04/29 20:23:42 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 87 ((char *) (((u_long) (0xf0 | slot)) << 24))[0xa0000] = zero; 88 } 89 90 extern int 91 grfmv_probe(sc, slot) 92 struct grf_softc *sc; 93 nubus_slot *slot; 94 { 95 nubus_dir dir, *dirp, dir2, *dirp2; 96 nubus_dirent dirent, *direntp; 97 nubus_type slottype; 98 99 dirp = &dir; 100 direntp = &dirent; 101 nubus_get_main_dir(slot, dirp); 102 103 /* 104 * Unfortunately, I think we'll have to load this value from 105 * the macos. The alternative is putting in enough hooks to 106 * be able to call the card's PrimaryInit routine which could 107 * call just about any part of the ROM, I think. 108 */ 109 if (nubus_find_rsrc(slot, dirp, 128, direntp) <= 0) { 110 if (nubus_find_rsrc(slot, dirp, 129, direntp) <= 0) { 111 return 0; 112 } 113 } 114 115 dirp2 = (nubus_dir *) &sc->board_dir; 116 nubus_get_dir_from_rsrc(slot, direntp, dirp2); 117 118 if (nubus_find_rsrc(slot, dirp2, NUBUS_RSRC_TYPE, direntp) <= 0) 119 /* Type is a required entry... This should never happen. */ 120 return 0; 121 122 if (nubus_get_ind_data(slot, direntp, 123 (caddr_t) &slottype, sizeof(nubus_type)) <= 0) 124 return 0; 125 126 if (slottype.category != NUBUS_CATEGORY_DISPLAY) 127 return 0; 128 129 if (slottype.type != NUBUS_TYPE_VIDEO) 130 return 0; 131 132 if (slottype.drsw != NUBUS_DRSW_APPLE) 133 return 0; 134 135 /* 136 * If we've gotten this far, then we're dealing with a real-live 137 * Apple QuickDraw-compatible display card resource. Now, how to 138 * determine that this is an active resource??? Dunno. But we'll 139 * proceed like it is. 140 */ 141 142 sc->card_id = slottype.drhw; 143 printf("card id = 0x%x.\n", sc->card_id); 144 145 /* Need to load display info (and driver?), etc... */ 146 147 return 1; 148 } 149 150 extern int 151 grfmv_init(sc) 152 struct grf_softc *sc; 153 { 154 struct image_data image_store, image; 155 nubus_dirent dirent; 156 nubus_dir mode_dir; 157 int mode; 158 u_long base; 159 160 mode = NUBUS_RSRC_FIRSTMODE; 161 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) 162 return 0; 163 164 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 165 166 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) <= 0) 167 return 0; 168 169 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 170 sizeof(struct image_data)) <= 0) 171 return 0; 172 173 load_image_data((caddr_t) &image_store, &image); 174 175 base = NUBUS_SLOT_TO_BASE(sc->sc_slot.slot); 176 177 sc->curr_mode.mode_id = mode; 178 sc->curr_mode.fbbase = (caddr_t) (base + image.offset); 179 sc->curr_mode.rowbytes = image.rowbytes; 180 sc->curr_mode.width = image.right - image.left; 181 sc->curr_mode.height = image.bottom - image.top; 182 sc->curr_mode.fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 183 sc->curr_mode.hres = image.hRes; 184 sc->curr_mode.vres = image.vRes; 185 sc->curr_mode.ptype = image.pixelType; 186 sc->curr_mode.psize = image.pixelSize; 187 188 strncpy(sc->card_name, nubus_get_card_name(&sc->sc_slot), 189 CARD_NAME_LEN); 190 191 sc->card_name[CARD_NAME_LEN-1] = '\0'; 192 193 add_nubus_intr(sc->sc_slot.slot, grfmv_intr, sc); 194 195 return 1; 196 } 197 198 extern int 199 grfmv_mode(gp, cmd, arg) 200 struct grf_softc *gp; 201 int cmd; 202 void *arg; 203 { 204 switch (cmd) { 205 case GM_CURRMODE: 206 break; 207 case GM_NEWMODE: 208 break; 209 case GM_LISTMODES: 210 break; 211 } 212 return EINVAL; 213 } 214
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