grf_nubus.c revision 1.18
1 /* $NetBSD: grf_nubus.c,v 1.18 1997/04/01 05:42:00 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 #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 55 static char zero = 0; 56 static void grfmv_intr_generic __P((void *vsc, int slot)); 57 static void grfmv_intr_cti __P((void *vsc, int slot)); 58 static void grfmv_intr_cb264 __P((void *vsc, int slot)); 59 60 static int grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg)); 61 static caddr_t grfmv_phys __P((struct grf_softc *gp, vm_offset_t addr)); 62 static int grfmv_match __P((struct device *, struct cfdata *, void *)); 63 static void grfmv_attach __P((struct device *, struct device *, void *)); 64 65 struct cfdriver macvid_cd = { 66 NULL, "macvid", DV_DULL 67 }; 68 69 struct cfattach macvid_ca = { 70 sizeof(struct grfbus_softc), grfmv_match, grfmv_attach 71 }; 72 73 static void 74 load_image_data(data, image) 75 caddr_t data; 76 struct image_data *image; 77 { 78 bcopy(data , &image->size, 4); 79 bcopy(data + 4, &image->offset, 4); 80 bcopy(data + 8, &image->rowbytes, 2); 81 bcopy(data + 10, &image->top, 2); 82 bcopy(data + 12, &image->left, 2); 83 bcopy(data + 14, &image->bottom, 2); 84 bcopy(data + 16, &image->right, 2); 85 bcopy(data + 18, &image->version, 2); 86 bcopy(data + 20, &image->packType, 2); 87 bcopy(data + 22, &image->packSize, 4); 88 bcopy(data + 26, &image->hRes, 4); 89 bcopy(data + 30, &image->vRes, 4); 90 bcopy(data + 34, &image->pixelType, 2); 91 bcopy(data + 36, &image->pixelSize, 2); 92 bcopy(data + 38, &image->cmpCount, 2); 93 bcopy(data + 40, &image->cmpSize, 2); 94 bcopy(data + 42, &image->planeBytes, 4); 95 } 96 97 98 static int 99 grfmv_match(parent, cf, aux) 100 struct device *parent; 101 struct cfdata *cf; 102 void *aux; 103 { 104 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 105 106 if (na->category != NUBUS_CATEGORY_DISPLAY) 107 return 0; 108 109 if (na->type != NUBUS_TYPE_VIDEO) 110 return 0; 111 112 if (na->drsw != NUBUS_DRSW_APPLE) 113 return 0; 114 115 /* 116 * If we've gotten this far, then we're dealing with a real-live 117 * Apple QuickDraw-compatible display card resource. Now, how to 118 * determine that this is an active resource??? Dunno. But we'll 119 * proceed like it is. 120 */ 121 122 return 1; 123 } 124 125 static void 126 grfmv_attach(parent, self, aux) 127 struct device *parent, *self; 128 void *aux; 129 { 130 struct grfbus_softc *sc = (struct grfbus_softc *) self; 131 struct nubus_attach_args *na = (struct nubus_attach_args *) aux; 132 struct image_data image_store, image; 133 struct grfmode *gm; 134 char cardname[CARD_NAME_LEN]; 135 nubus_dirent dirent; 136 nubus_dir dir, mode_dir; 137 int mode; 138 139 sc->card_id = na->drhw; 140 141 bcopy(na->fmt, &sc->sc_slot, sizeof(nubus_slot)); 142 143 nubus_get_main_dir(&sc->sc_slot, &dir); 144 145 if (nubus_find_rsrc(&sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) 146 return; 147 148 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir); 149 150 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, 151 NUBUS_RSRC_TYPE, &dirent) <= 0) 152 if ((na->rsrcid != 128) || 153 (nubus_find_rsrc(&sc->sc_slot, &dir, 129, &dirent) <= 0)) 154 return; 155 156 mode = NUBUS_RSRC_FIRSTMODE; 157 if (nubus_find_rsrc(&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) { 158 printf("\n%s: probe failed to get board rsrc.\n", 159 sc->sc_dev.dv_xname); 160 return; 161 } 162 163 nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir); 164 165 if (nubus_find_rsrc(&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) 166 <= 0) { 167 printf("\n%s: probe failed to get mode dir.\n", 168 sc->sc_dev.dv_xname); 169 return; 170 } 171 172 if (nubus_get_ind_data(&sc->sc_slot, &dirent, (caddr_t) &image_store, 173 sizeof(struct image_data)) <= 0) { 174 printf("\n%s: probe failed to get indirect mode data.\n", 175 sc->sc_dev.dv_xname); 176 return; 177 } 178 179 /* Need to load display info (and driver?), etc... (?) */ 180 181 load_image_data((caddr_t) &image_store, &image); 182 183 gm = &sc->curr_mode; 184 gm->mode_id = mode; 185 gm->fbbase = (caddr_t) (sc->sc_slot.virtual_base + image.offset); 186 gm->fboff = image.offset; 187 gm->rowbytes = image.rowbytes; 188 gm->width = image.right - image.left; 189 gm->height = image.bottom - image.top; 190 gm->fbsize = sc->curr_mode.height * sc->curr_mode.rowbytes; 191 gm->hres = image.hRes; 192 gm->vres = image.vRes; 193 gm->ptype = image.pixelType; 194 gm->psize = image.pixelSize; 195 196 strncpy(cardname, nubus_get_card_name(&sc->sc_slot), 197 CARD_NAME_LEN); 198 cardname[CARD_NAME_LEN-1] = '\0'; 199 200 if (sc->card_id == NUBUS_DRHW_TFB) { 201 /* 202 * This is the Toby card, but apparently some manufacturers 203 * (like Cornerstone) didn't bother to get/use their own 204 * value here, even though the cards are different, so we 205 * so we try to differentiate here. 206 */ 207 if (strncmp(cardname, "Samsung 768", 11) == 0) { 208 sc->card_id = NUBUS_DRHW_SAM768; 209 } else if (strncmp(cardname, "Toby frame", 10) == 0) { 210 /* Do nothing. */ 211 } else { 212 printf("This display card pretends to be a TFB!"); 213 } 214 } 215 216 printf(": %s\n", cardname); 217 218 switch (sc->card_id) { 219 case NUBUS_DRHW_M2HRVC: 220 case NUBUS_DRHW_TFB: 221 sc->cli_offset = 0xa0000; 222 add_nubus_intr(sc->sc_slot.slot, grfmv_intr_generic, sc); 223 break; 224 case NUBUS_DRHW_WVC: 225 sc->cli_offset = 0xa00000; 226 add_nubus_intr(sc->sc_slot.slot, grfmv_intr_generic, sc); 227 break; 228 case NUBUS_DRHW_SAM768: 229 add_nubus_intr(sc->sc_slot.slot, grfmv_intr_cti, sc); 230 break; 231 case NUBUS_DRHW_MICRON: 232 /* What do we know about this one? */ 233 default: 234 printf(" Unknown video card ID 0x%x--", sc->card_id); 235 printf("Not installing interrupt routine.\n"); 236 break; 237 } 238 239 /* Perform common video attachment. */ 240 grf_establish(sc, &sc->sc_slot, grfmv_mode, grfmv_phys); 241 } 242 243 static int 244 grfmv_mode(gp, cmd, arg) 245 struct grf_softc *gp; 246 int cmd; 247 void *arg; 248 { 249 switch (cmd) { 250 case GM_GRFON: 251 case GM_GRFOFF: 252 return 0; 253 case GM_CURRMODE: 254 break; 255 case GM_NEWMODE: 256 break; 257 case GM_LISTMODES: 258 break; 259 } 260 return EINVAL; 261 } 262 263 static caddr_t 264 grfmv_phys(gp, addr) 265 struct grf_softc *gp; 266 vm_offset_t addr; 267 { 268 return (caddr_t) (NUBUS_SLOT2PA(gp->sc_slot->slot) + 269 (addr - gp->sc_slot->virtual_base)); 270 } 271 272 /* Interrupt handlers... */ 273 /* 274 * Generic routine to clear interrupts for cards where it simply takes 275 * a CLR.B to clear the interrupt. The offset of this byte varies between 276 * cards. 277 */ 278 /*ARGSUSED*/ 279 static void 280 grfmv_intr_generic(vsc, slot) 281 void *vsc; 282 int slot; 283 { 284 caddr_t slotbase; 285 struct grfbus_softc *sc; 286 287 sc = (struct grfbus_softc *) vsc; 288 slotbase = (caddr_t) sc->sc_slot.virtual_base; 289 slotbase[sc->cli_offset] = zero; 290 } 291 292 /* 293 * Routine to clear interrupts on Samsung 768x1006 video controller. 294 * This controller was manufactured by Cornerstone Technology, Inc., 295 * now known as Cornerstone Imaging. 296 * 297 * To clear this interrupt, we apparently have to set, then clear, 298 * bit 2 at byte offset 0x80000 from the card's base. 299 * Information for this provided by Brad Salai <bsalai (at) servtech.com> 300 */ 301 /*ARGSUSED*/ 302 static void 303 grfmv_intr_cti(vsc, slot) 304 void *vsc; 305 int slot; 306 { 307 volatile char *slotbase; 308 struct grfbus_softc *sc; 309 310 sc = (struct grfbus_softc *) vsc; 311 slotbase = ((volatile char *) sc->sc_slot.virtual_base) + 0x00080000; 312 *slotbase = (*slotbase | 0x02); 313 *slotbase = (*slotbase & 0xFD); 314 } 315 316 /*ARGSUSED*/ 317 static void 318 grfmv_intr_cb264(vsc, slot) 319 void *vsc; 320 int slot; 321 { 322 struct grfbus_softc *sc; 323 caddr_t slotbase; 324 325 sc = (struct grfbus_softc *) vsc; 326 slotbase = (caddr_t) sc->sc_slot.virtual_base; 327 asm volatile(" movl %0,a0 328 movl a0@(0xff6028),d0 329 andl #0x2,d0 330 beq _mv_intr0 331 movql #0x3,d0 332 _mv_intr0: 333 movl a0@(0xff600c),d1 334 andl #0x3,d1 335 cmpl d1,d0 336 beq _mv_intr_fin 337 movl d0,a0@(0xff600c) 338 nop 339 tstb d0 340 beq _mv_intr1 341 movl #0x0002,a0@(0xff6040) 342 movl #0x0102,a0@(0xff6044) 343 movl #0x0105,a0@(0xff6048) 344 movl #0x000e,a0@(0xff604c) 345 movl #0x001c,a0@(0xff6050) 346 movl #0x00bc,a0@(0xff6054) 347 movl #0x00c3,a0@(0xff6058) 348 movl #0x0061,a0@(0xff605c) 349 movl #0x0012,a0@(0xff6060) 350 bra _mv_intr_fin 351 _mv_intr1: 352 movl #0x0002,a0@(0xff6040) 353 movl #0x0209,a0@(0xff6044) 354 movl #0x020c,a0@(0xff6048) 355 movl #0x000f,a0@(0xff604c) 356 movl #0x0027,a0@(0xff6050) 357 movl #0x00c7,a0@(0xff6054) 358 movl #0x00d7,a0@(0xff6058) 359 movl #0x006b,a0@(0xff605c) 360 movl #0x0029,a0@(0xff6060) 361 _mv_intr_fin: 362 movl #0x1,a0@(0xff6014)" 363 : : "g" (slotbase) : "a0","d0","d1"); 364 } 365
Indexes created Tue Sep 30 20:09:53 GMT 2025