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grf_nubus.c revision 1.72
      1 /*	$NetBSD: grf_nubus.c,v 1.72 2007/03/04 06:00:09 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. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 /*
     29  * Device-specific routines for handling Nubus-based video cards.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: grf_nubus.c,v 1.72 2007/03/04 06:00:09 christos Exp $");
     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 <mac68k/nubus/nubus.h>
     51 #include <mac68k/dev/grfvar.h>
     52 
     53 static void	load_image_data(void *, struct image_data *);
     54 
     55 static void	grfmv_intr_generic_write1(void *);
     56 static void	grfmv_intr_generic_write4(void *);
     57 static void	grfmv_intr_generic_or4(void *);
     58 
     59 static void	grfmv_intr_cb264(void *);
     60 static void	grfmv_intr_cb364(void *);
     61 static void	grfmv_intr_cmax(void *);
     62 static void	grfmv_intr_cti(void *);
     63 static void	grfmv_intr_radius(void *);
     64 static void	grfmv_intr_radius24(void *);
     65 static void	grfmv_intr_supermacgfx(void *);
     66 static void	grfmv_intr_lapis(void *);
     67 static void	grfmv_intr_formac(void *);
     68 static void	grfmv_intr_vimage(void *);
     69 static void	grfmv_intr_gvimage(void *);
     70 static void	grfmv_intr_radius_gsc(void *);
     71 static void	grfmv_intr_radius_gx(void *);
     72 static void	grfmv_intr_relax_200(void *);
     73 static void	grfmv_intr_mvc(void *);
     74 static void	grfmv_intr_viltro_340(void *);
     75 
     76 static int	grfmv_mode(struct grf_softc *, int, void *);
     77 static int	grfmv_match(struct device *, struct cfdata *, void *);
     78 static void	grfmv_attach(struct device *, struct device *, void *);
     79 
     80 CFATTACH_DECL(macvid, sizeof(struct grfbus_softc),
     81     grfmv_match, grfmv_attach, NULL, NULL);
     82 
     83 static void
     84 load_image_data(void *	data, struct image_data *image)
     85 {
     86 	memcpy(&image->size,       data     , 4);
     87 	memcpy(&image->offset,     data +  4, 4);
     88 	memcpy(&image->rowbytes,   data +  8, 2);
     89 	memcpy(&image->top,        data + 10, 2);
     90 	memcpy(&image->left,       data + 12, 2);
     91 	memcpy(&image->bottom,     data + 14, 2);
     92 	memcpy(&image->right,      data + 16, 2);
     93 	memcpy(&image->version,    data + 18, 2);
     94 	memcpy(&image->packType,   data + 20, 2);
     95 	memcpy(&image->packSize,   data + 22, 4);
     96 	memcpy(&image->hRes,       data + 26, 4);
     97 	memcpy(&image->vRes,       data + 30, 4);
     98 	memcpy(&image->pixelType,  data + 34, 2);
     99 	memcpy(&image->pixelSize,  data + 36, 2);
    100 	memcpy(&image->cmpCount,   data + 38, 2);
    101 	memcpy(&image->cmpSize,    data + 40, 2);
    102 	memcpy(&image->planeBytes, data + 42, 4);
    103 }
    104 
    105 
    106 static int
    107 grfmv_match(struct device *parent, struct cfdata *cf, void *aux)
    108 {
    109 	struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
    110 
    111 	if (na->category != NUBUS_CATEGORY_DISPLAY)
    112 		return 0;
    113 
    114 	if (na->type != NUBUS_TYPE_VIDEO)
    115 		return 0;
    116 
    117 	if (na->drsw != NUBUS_DRSW_APPLE)
    118 		return 0;
    119 
    120 	/*
    121 	 * If we've gotten this far, then we're dealing with a real-live
    122 	 * Apple QuickDraw-compatible display card resource.  Now, how to
    123 	 * determine that this is an active resource???  Dunno.  But we'll
    124 	 * proceed like it is.
    125 	 */
    126 
    127 	return 1;
    128 }
    129 
    130 static void
    131 grfmv_attach(struct device *parent, struct device *self, void *aux)
    132 {
    133 	struct grfbus_softc *sc = (struct grfbus_softc *)self;
    134 	struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
    135 	struct image_data image_store, image;
    136 	struct grfmode *gm;
    137 	char cardname[CARD_NAME_LEN];
    138 	nubus_dirent dirent;
    139 	nubus_dir dir, mode_dir;
    140 	int mode;
    141 
    142 	memcpy(&sc->sc_slot, na->fmt, sizeof(nubus_slot));
    143 
    144 	sc->sc_tag = na->na_tag;
    145 	sc->card_id = na->drhw;
    146 	sc->sc_basepa = (bus_addr_t)NUBUS_SLOT2PA(na->slot);
    147 	sc->sc_fbofs = 0;
    148 
    149 	if (bus_space_map(sc->sc_tag, sc->sc_basepa, NBMEMSIZE,
    150 	    0, &sc->sc_handle)) {
    151 		printf(": grfmv_attach: failed to map slot %d\n", na->slot);
    152 		return;
    153 	}
    154 
    155 	nubus_get_main_dir(&sc->sc_slot, &dir);
    156 
    157 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    158 	    &sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) {
    159 bad:
    160 		bus_space_unmap(sc->sc_tag, sc->sc_handle, NBMEMSIZE);
    161 		return;
    162 	}
    163 
    164 	nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir);
    165 
    166 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    167 	    &sc->sc_slot, &sc->board_dir, NUBUS_RSRC_TYPE, &dirent) <= 0)
    168 		if ((na->rsrcid != 128) ||
    169 		    (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    170 		    &sc->sc_slot, &dir, 129, &dirent) <= 0))
    171 			goto bad;
    172 
    173 	mode = NUBUS_RSRC_FIRSTMODE;
    174 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    175 	    &sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) {
    176 		printf(": probe failed to get board rsrc.\n");
    177 		goto bad;
    178 	}
    179 
    180 	nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir);
    181 
    182 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    183 	    &sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) <= 0) {
    184 		printf(": probe failed to get mode dir.\n");
    185 		goto bad;
    186 	}
    187 
    188 	if (nubus_get_ind_data(sc->sc_tag, sc->sc_handle, &sc->sc_slot,
    189 	    &dirent, (void *)&image_store, sizeof(struct image_data)) <= 0) {
    190 		printf(": probe failed to get indirect mode data.\n");
    191 		goto bad;
    192 	}
    193 
    194 	/* Need to load display info (and driver?), etc... (?) */
    195 
    196 	load_image_data((void *)&image_store, &image);
    197 
    198 	gm = &sc->curr_mode;
    199 	gm->mode_id = mode;
    200 	gm->ptype = image.pixelType;
    201 	gm->psize = image.pixelSize;
    202 	gm->width = image.right - image.left;
    203 	gm->height = image.bottom - image.top;
    204 	gm->rowbytes = image.rowbytes;
    205 	gm->hres = image.hRes;
    206 	gm->vres = image.vRes;
    207 	gm->fbsize = gm->height * gm->rowbytes;
    208 	gm->fbbase = (void *)(sc->sc_handle.base);	/* XXX evil hack */
    209 	gm->fboff = image.offset;
    210 
    211 	strncpy(cardname, nubus_get_card_name(sc->sc_tag, sc->sc_handle,
    212 	    &sc->sc_slot), CARD_NAME_LEN);
    213 	cardname[CARD_NAME_LEN-1] = '\0';
    214 	printf(": %s\n", cardname);
    215 
    216 	if (sc->card_id == NUBUS_DRHW_TFB) {
    217 		/*
    218 		 * This is the Toby card, but apparently some manufacturers
    219 		 * (like Cornerstone) didn't bother to get/use their own
    220 		 * value here, even though the cards are different, so we
    221 		 * so we try to differentiate here.
    222 		 */
    223 		if (strncmp(cardname, "Samsung 768", 11) == 0)
    224 			sc->card_id = NUBUS_DRHW_SAM768;
    225 		else if (strncmp(cardname, "Toby frame", 10) != 0)
    226 			printf("%s: This display card pretends to be a TFB!\n",
    227 			    sc->sc_dev.dv_xname);
    228 	}
    229 
    230 	switch (sc->card_id) {
    231 	case NUBUS_DRHW_TFB:
    232 	case NUBUS_DRHW_M2HRVC:
    233 	case NUBUS_DRHW_PVC:
    234 		sc->cli_offset = 0xa0000;
    235 		sc->cli_value = 0;
    236 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    237 		break;
    238 	case NUBUS_DRHW_WVC:
    239 		sc->cli_offset = 0xa00000;
    240 		sc->cli_value = 0;
    241 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    242 		break;
    243 	case NUBUS_DRHW_COLORMAX:
    244 		add_nubus_intr(na->slot, grfmv_intr_cmax, sc);
    245 		break;
    246 	case NUBUS_DRHW_SE30:
    247 		/* Do nothing--SE/30 interrupts are disabled */
    248 		break;
    249 	case NUBUS_DRHW_MDC:
    250 		sc->cli_offset = 0x200148;
    251 		sc->cli_value = 1;
    252 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    253 
    254 		/* Enable interrupts; to disable, write 0x7 to this location */
    255 		bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x20013C, 5);
    256 		break;
    257 	case NUBUS_DRHW_CB264:
    258 		add_nubus_intr(na->slot, grfmv_intr_cb264, sc);
    259 		break;
    260 	case NUBUS_DRHW_CB364:
    261 		add_nubus_intr(na->slot, grfmv_intr_cb364, sc);
    262 		break;
    263 	case NUBUS_DRHW_RPC8:
    264 		sc->cli_offset = 0xfdff8f;
    265 		sc->cli_value = 0xff;
    266 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    267 		break;
    268 	case NUBUS_DRHW_RPC8XJ:
    269 		sc->cli_value = 0x66;
    270 		add_nubus_intr(na->slot, grfmv_intr_radius, sc);
    271 		break;
    272 	case NUBUS_DRHW_RPC24X:
    273 	case NUBUS_DRHW_BOOGIE:
    274 		sc->cli_value = 0x64;
    275 		add_nubus_intr(na->slot, grfmv_intr_radius, sc);
    276 		break;
    277 	case NUBUS_DRHW_RPC24XP:
    278 		add_nubus_intr(na->slot, grfmv_intr_radius24, sc);
    279 		break;
    280 	case NUBUS_DRHW_RADGSC:
    281 		add_nubus_intr(na->slot, grfmv_intr_radius_gsc, sc);
    282 		break;
    283 	case NUBUS_DRHW_RDCGX:
    284 		add_nubus_intr(na->slot, grfmv_intr_radius_gx, sc);
    285 		break;
    286 	case NUBUS_DRHW_FIILX:
    287 	case NUBUS_DRHW_FIISXDSP:
    288 	case NUBUS_DRHW_FUTURASX:
    289 		sc->cli_offset = 0xf05000;
    290 		sc->cli_value = 0x80;
    291 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    292 		break;
    293 	case NUBUS_DRHW_SAM768:
    294 		add_nubus_intr(na->slot, grfmv_intr_cti, sc);
    295 		break;
    296 	case NUBUS_DRHW_SUPRGFX:
    297 		add_nubus_intr(na->slot, grfmv_intr_supermacgfx, sc);
    298 		break;
    299 	case NUBUS_DRHW_SPECTRM8:
    300 		sc->cli_offset = 0x0de178;
    301 		sc->cli_value = 0x80;
    302 		add_nubus_intr(na->slot, grfmv_intr_generic_or4, sc);
    303 		break;
    304 	case NUBUS_DRHW_LAPIS:
    305 		add_nubus_intr(na->slot, grfmv_intr_lapis, sc);
    306 		break;
    307 	case NUBUS_DRHW_RELAX200:
    308 		add_nubus_intr(na->slot, grfmv_intr_relax_200, sc);
    309 		break;
    310 	case NUBUS_DRHW_BAER:
    311 	case NUBUS_DRHW_FORMAC:
    312 		add_nubus_intr(na->slot, grfmv_intr_formac, sc);
    313 		break;
    314 	case NUBUS_DRHW_ROPS24LXI:
    315 	case NUBUS_DRHW_ROPS24XLTV:
    316 	case NUBUS_DRHW_ROPS24MXTV:
    317 		sc->cli_offset = 0xfb0010;
    318 		sc->cli_value = 0x00;
    319 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    320 		break;
    321 	case NUBUS_DRHW_ROPSPPGT:
    322 		sc->cli_offset = 0xf50010;
    323 		sc->cli_value = 0x02;
    324 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    325 		break;
    326 	case NUBUS_DRHW_VIMAGE:
    327 		add_nubus_intr(na->slot, grfmv_intr_vimage, sc);
    328 		break;
    329 	case NUBUS_DRHW_GVIMAGE:
    330 		add_nubus_intr(na->slot, grfmv_intr_gvimage, sc);
    331 		break;
    332 	case NUBUS_DRHW_MC2124NB:
    333 		sc->cli_offset = 0xfd1000;
    334 		sc->cli_value = 0x00;
    335 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    336 		break;
    337 	case NUBUS_DRHW_MICRON:
    338 		sc->cli_offset = 0xa00014;
    339 		sc->cli_value = 0;
    340 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    341 		break;
    342 	case NUBUS_DRHW_MVC:
    343 		add_nubus_intr(na->slot, grfmv_intr_mvc, sc);
    344 		break;
    345 	case NUBUS_DRHW_VILTRO340:
    346 		add_nubus_intr(na->slot, grfmv_intr_viltro_340, sc);
    347 		break;
    348 	default:
    349 		printf("%s: Unknown video card ID 0x%x --",
    350 		    sc->sc_dev.dv_xname, sc->card_id);
    351 		printf(" Not installing interrupt routine.\n");
    352 		break;
    353 	}
    354 
    355 	/* Perform common video attachment. */
    356 	grf_establish(sc, &sc->sc_slot, grfmv_mode);
    357 }
    358 
    359 static int
    360 grfmv_mode(struct grf_softc *gp, int cmd, void *arg)
    361 {
    362 	switch (cmd) {
    363 	case GM_GRFON:
    364 	case GM_GRFOFF:
    365 		return 0;
    366 	case GM_CURRMODE:
    367 		break;
    368 	case GM_NEWMODE:
    369 		break;
    370 	case GM_LISTMODES:
    371 		break;
    372 	}
    373 	return EINVAL;
    374 }
    375 
    376 /* Interrupt handlers... */
    377 /*
    378  * Generic routine to clear interrupts for cards where it simply takes
    379  * a MOV.B to clear the interrupt.  The offset and value of this byte
    380  * varies between cards.
    381  */
    382 /*ARGSUSED*/
    383 static void
    384 grfmv_intr_generic_write1(void *vsc)
    385 {
    386 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    387 
    388 	bus_space_write_1(sc->sc_tag, sc->sc_handle,
    389 	    sc->cli_offset, (u_int8_t)sc->cli_value);
    390 }
    391 
    392 /*
    393  * Generic routine to clear interrupts for cards where it simply takes
    394  * a MOV.L to clear the interrupt.  The offset and value of this byte
    395  * varies between cards.
    396  */
    397 /*ARGSUSED*/
    398 static void
    399 grfmv_intr_generic_write4(void *vsc)
    400 {
    401 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    402 
    403 	bus_space_write_4(sc->sc_tag, sc->sc_handle,
    404 	    sc->cli_offset, sc->cli_value);
    405 }
    406 
    407 /*
    408  * Generic routine to clear interrupts for cards where it simply takes
    409  * an OR.L to clear the interrupt.  The offset and value of this byte
    410  * varies between cards.
    411  */
    412 /*ARGSUSED*/
    413 static void
    414 grfmv_intr_generic_or4(void *vsc)
    415 {
    416 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    417 	unsigned long	scratch;
    418 
    419 	scratch = bus_space_read_4(sc->sc_tag, sc->sc_handle, sc->cli_offset);
    420 	scratch |= 0x80;
    421 	bus_space_write_4(sc->sc_tag, sc->sc_handle, sc->cli_offset, scratch);
    422 }
    423 
    424 /*
    425  * Routine to clear interrupts for the Radius PrecisionColor 8xj card.
    426  */
    427 /*ARGSUSED*/
    428 static void
    429 grfmv_intr_radius(void *vsc)
    430 {
    431 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    432 	u_int8_t c;
    433 
    434 	c = sc->cli_value;
    435 
    436 	c |= 0x80;
    437 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    438 	c &= 0x7f;
    439 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    440 }
    441 
    442 /*
    443  * Routine to clear interrupts for the Radius PrecisionColor 24Xp card.
    444  * Is this what the 8xj routine is doing, too?
    445  */
    446 /*ARGSUSED*/
    447 static void
    448 grfmv_intr_radius24(void *vsc)
    449 {
    450 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    451 	u_int8_t c;
    452 
    453 	c = 0x80 | bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfffd8);
    454 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    455 	c &= 0x7f;
    456 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    457 }
    458 
    459 /*
    460  * Routine to clear interrupts on Samsung 768x1006 video controller.
    461  * This controller was manufactured by Cornerstone Technology, Inc.,
    462  * now known as Cornerstone Imaging.
    463  *
    464  * To clear this interrupt, we apparently have to set, then clear,
    465  * bit 2 at byte offset 0x80000 from the card's base.
    466  *	Information for this provided by Brad Salai <bsalai (at) servtech.com>
    467  */
    468 /*ARGSUSED*/
    469 static void
    470 grfmv_intr_cti(void *vsc)
    471 {
    472 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    473 	u_int8_t c;
    474 
    475 	c = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x80000);
    476 	c |= 0x02;
    477 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
    478 	c &= 0xfd;
    479 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
    480 }
    481 
    482 /*ARGSUSED*/
    483 static void
    484 grfmv_intr_cb264(void *vsc)
    485 {
    486 	struct grfbus_softc *sc;
    487 	volatile char *slotbase;
    488 
    489 	sc = (struct grfbus_softc *)vsc;
    490 	slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
    491 	__asm volatile(
    492 		"	movl	%0,%%a0				\n"
    493 		"	movl	%%a0@(0xff6028),%%d0		\n"
    494 		"	andl	#0x2,%%d0			\n"
    495 		"	beq	_mv_intr0			\n"
    496 		"	movql	#0x3,%%d0			\n"
    497 		"_mv_intr0:					\n"
    498 		"	movl	%%a0@(0xff600c),%%d1		\n"
    499 		"	andl	#0x3,%%d1			\n"
    500 		"	cmpl	%%d1,%%d0			\n"
    501 		"	beq	_mv_intr_fin			\n"
    502 		"	movl	%%d0,%%a0@(0xff600c)		\n"
    503 		"	nop					\n"
    504 		"	tstb	%%d0				\n"
    505 		"	beq	_mv_intr1			\n"
    506 		"	movl	#0x0002,%%a0@(0xff6040)		\n"
    507 		"	movl	#0x0102,%%a0@(0xff6044)		\n"
    508 		"	movl	#0x0105,%%a0@(0xff6048)		\n"
    509 		"	movl	#0x000e,%%a0@(0xff604c)		\n"
    510 		"	movl	#0x001c,%%a0@(0xff6050)		\n"
    511 		"	movl	#0x00bc,%%a0@(0xff6054)		\n"
    512 		"	movl	#0x00c3,%%a0@(0xff6058)		\n"
    513 		"	movl	#0x0061,%%a0@(0xff605c)		\n"
    514 		"	movl	#0x0012,%%a0@(0xff6060)		\n"
    515 		"	bra	_mv_intr_fin			\n"
    516 		"_mv_intr1:					\n"
    517 		"	movl	#0x0002,%%a0@(0xff6040)		\n"
    518 		"	movl	#0x0209,%%a0@(0xff6044)		\n"
    519 		"	movl	#0x020c,%%a0@(0xff6048)		\n"
    520 		"	movl	#0x000f,%%a0@(0xff604c)		\n"
    521 		"	movl	#0x0027,%%a0@(0xff6050)		\n"
    522 		"	movl	#0x00c7,%%a0@(0xff6054)		\n"
    523 		"	movl	#0x00d7,%%a0@(0xff6058)		\n"
    524 		"	movl	#0x006b,%%a0@(0xff605c)		\n"
    525 		"	movl	#0x0029,%%a0@(0xff6060)		\n"
    526 		"_mv_intr_fin:					\n"
    527 		"	movl	#0x1,%%a0@(0xff6014)"
    528 		: : "g" (slotbase) : "a0","d0","d1");
    529 }
    530 
    531 /*
    532  * Support for the Colorboard 364 might be more complex than it needs to
    533  * be.  If we can find more information about this card, this might be
    534  * significantly simplified.  Contributions welcome...  :-)
    535  */
    536 /*ARGSUSED*/
    537 static void
    538 grfmv_intr_cb364(void *vsc)
    539 {
    540 	struct grfbus_softc *sc;
    541 	volatile char *slotbase;
    542 
    543 	sc = (struct grfbus_softc *)vsc;
    544 	slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
    545 	__asm volatile(
    546 		"	movl	%0,%%a0				\n"
    547 		"	movl	%%a0@(0xfe6028),%%d0		\n"
    548 		"	andl	#0x2,%%d0			\n"
    549 		"	beq	_cb364_intr4			\n"
    550 		"	movql	#0x3,%%d0			\n"
    551 		"	movl	%%a0@(0xfe6018),%%d1		\n"
    552 		"	movl	#0x3,%%a0@(0xfe6018)		\n"
    553 		"	movw	%%a0@(0xfe7010),%%d2		\n"
    554 		"	movl	%%d1,%%a0@(0xfe6018)		\n"
    555 		"	movl	%%a0@(0xfe6020),%%d1		\n"
    556 		"	btst	#0x06,%%d2			\n"
    557 		"	beq	_cb364_intr0			\n"
    558 		"	btst	#0x00,%%d1			\n"
    559 		"	beq	_cb364_intr5			\n"
    560 		"	bsr	_cb364_intr1			\n"
    561 		"	bra	_cb364_intr_out			\n"
    562 		"_cb364_intr0:					\n"
    563 		"	btst	#0x00,%%d1			\n"
    564 		"	bne	_cb364_intr5			\n"
    565 		"	bsr	_cb364_intr1			\n"
    566 		"	bra	_cb364_intr_out			\n"
    567 		"_cb364_intr1:					\n"
    568 		"	movl	%%d0,%%a0@(0xfe600c)		\n"
    569 		"	nop					\n"
    570 		"	tstb	%%d0				\n"
    571 		"	beq	_cb364_intr3			\n"
    572 		"	movl	#0x0002,%%a0@(0xfe6040)		\n"
    573 		"	movl	#0x0105,%%a0@(0xfe6048)		\n"
    574 		"	movl	#0x000e,%%a0@(0xfe604c)		\n"
    575 		"	movl	#0x00c3,%%a0@(0xfe6058)		\n"
    576 		"	movl	#0x0061,%%a0@(0xfe605c)		\n"
    577 		"	btst	#0x06,%%d2			\n"
    578 		"	beq	_cb364_intr2			\n"
    579 		"	movl	#0x001c,%%a0@(0xfe6050)		\n"
    580 		"	movl	#0x00bc,%%a0@(0xfe6054)		\n"
    581 		"	movl	#0x0012,%%a0@(0xfe6060)		\n"
    582 		"	movl	#0x000e,%%a0@(0xfe6044)		\n"
    583 		"	movl	#0x00c3,%%a0@(0xfe6064)		\n"
    584 		"	movl	#0x0061,%%a0@(0xfe6020)		\n"
    585 		"	rts					\n"
    586 		"_cb364_intr2:					\n"
    587 		"	movl	#0x0016,%%a0@(0xfe6050)		\n"
    588 		"	movl	#0x00b6,%%a0@(0xfe6054)		\n"
    589 		"	movl	#0x0011,%%a0@(0xfe6060)		\n"
    590 		"	movl	#0x0101,%%a0@(0xfe6044)		\n"
    591 		"	movl	#0x00bf,%%a0@(0xfe6064)		\n"
    592 		"	movl	#0x0001,%%a0@(0xfe6020)		\n"
    593 		"	rts					\n"
    594 		"_cb364_intr3:					\n"
    595 		"	movl	#0x0002,%%a0@(0xfe6040)		\n"
    596 		"	movl	#0x0209,%%a0@(0xfe6044)		\n"
    597 		"	movl	#0x020c,%%a0@(0xfe6048)		\n"
    598 		"	movl	#0x000f,%%a0@(0xfe604c)		\n"
    599 		"	movl	#0x0027,%%a0@(0xfe6050)		\n"
    600 		"	movl	#0x00c7,%%a0@(0xfe6054)		\n"
    601 		"	movl	#0x00d7,%%a0@(0xfe6058)		\n"
    602 		"	movl	#0x006b,%%a0@(0xfe605c)		\n"
    603 		"	movl	#0x0029,%%a0@(0xfe6060)		\n"
    604 		"	oril	#0x0040,%%a0@(0xfe6064)		\n"
    605 		"	movl	#0x0000,%%a0@(0xfe6020)		\n"
    606 		"	rts					\n"
    607 		"_cb364_intr4:					\n"
    608 		"	movq	#0x00,%%d0			\n"
    609 		"_cb364_intr5:					\n"
    610 		"	movl	%%a0@(0xfe600c),%%d1		\n"
    611 		"	andl	#0x3,%%d1			\n"
    612 		"	cmpl	%%d1,%%d0			\n"
    613 		"	beq	_cb364_intr_out			\n"
    614 		"	bsr	_cb364_intr1			\n"
    615 		"_cb364_intr_out:				\n"
    616 		"	movl	#0x1,%%a0@(0xfe6014)		\n"
    617 		"_cb364_intr_quit:"
    618 		: : "g" (slotbase) : "a0","d0","d1","d2");
    619 }
    620 
    621 /*
    622  * Interrupt clearing routine for SuperMac GFX card.
    623  */
    624 /*ARGSUSED*/
    625 static void
    626 grfmv_intr_supermacgfx(void *vsc)
    627 {
    628 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    629 	u_int8_t dummy;
    630 
    631 	dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xE70D3);
    632 }
    633 
    634 /*
    635  * Routine to clear interrupts for the Sigma Designs ColorMax card.
    636  */
    637 /*ARGSUSED*/
    638 static void
    639 grfmv_intr_cmax(void *vsc)
    640 {
    641 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    642 	u_int32_t dummy;
    643 
    644 	dummy = bus_space_read_4(sc->sc_tag, sc->sc_handle, 0xf501c);
    645 	dummy = bus_space_read_4(sc->sc_tag, sc->sc_handle, 0xf5018);
    646 }
    647 
    648 /*
    649  * Routine to clear interrupts for the Lapis ProColorServer 8 PDS card
    650  * (for the SE/30).
    651  */
    652 /*ARGSUSED*/
    653 static void
    654 grfmv_intr_lapis(void *vsc)
    655 {
    656 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    657 
    658 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xff7000, 0x08);
    659 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xff7000, 0x0C);
    660 }
    661 
    662 /*
    663  * Routine to clear interrupts for the Formac ProNitron 80.IVb
    664  * and Color Card II
    665  */
    666 /*ARGSUSED*/
    667 static void
    668 grfmv_intr_formac(void *vsc)
    669 {
    670 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    671 	u_int8_t dummy;
    672 
    673 	dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80db);
    674 	dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80d3);
    675 }
    676 
    677 /*
    678  * Routine to clear interrupts for the Vimage by Interware Co., Ltd.
    679  */
    680 /*ARGSUSED*/
    681 static void
    682 grfmv_intr_vimage(void *vsc)
    683 {
    684 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    685 
    686 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0x67);
    687 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0xE7);
    688 }
    689 
    690 /*
    691  * Routine to clear interrupts for the Grand Vimage by Interware Co., Ltd.
    692  */
    693 /*ARGSUSED*/
    694 static void
    695 grfmv_intr_gvimage(void *vsc)
    696 {
    697 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    698 	u_int8_t dummy;
    699 
    700 	dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xf00000);
    701 }
    702 
    703 /*
    704  * Routine to clear interrupts for the Radius GS/C
    705  */
    706 /*ARGSUSED*/
    707 static void
    708 grfmv_intr_radius_gsc(void *vsc)
    709 {
    710 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    711 	u_int8_t dummy;
    712 
    713 	dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfb802);
    714 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xfb802, 0xff);
    715 }
    716 
    717 /*
    718  * Routine to clear interrupts for the Radius GS/C
    719  */
    720 /*ARGSUSED*/
    721 static void
    722 grfmv_intr_radius_gx(void *vsc)
    723 {
    724 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    725 
    726 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x600000, 0x00);
    727 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x600000, 0x20);
    728 }
    729 
    730 /*
    731  * Routine to clear interrupts for the Relax 19" model 200.
    732  */
    733 /*ARGSUSED*/
    734 static void
    735 grfmv_intr_relax_200(void *vsc)
    736 {
    737 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    738 	unsigned long	scratch;
    739 
    740 	/* The board ROM driver code has a tst.l here. */
    741 	scratch = bus_space_read_4(sc->sc_tag, sc->sc_handle, 0x000D0040);
    742 }
    743 
    744 /*
    745  * Routine to clear interrupts for the Apple Mac II Monochrome Video Card.
    746  */
    747 /*ARGSUSED*/
    748 static void
    749 grfmv_intr_mvc(void *vsc)
    750 {
    751 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    752 
    753 	bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x00040000, 0);
    754 	bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x00020000, 0);
    755 }
    756 
    757 /*
    758  * Routine to clear interrupts for the VillageTronic Mac Picasso 340.
    759  */
    760 /*ARGSUSED*/
    761 static void
    762 grfmv_intr_viltro_340(void *vsc)
    763 {
    764 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    765 	u_int8_t scratch;
    766 
    767 	/* Yes, two read accesses to the same spot. */
    768 	scratch = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x0500);
    769 	scratch = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x0500);
    770 }
    771