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      1 /*	$NetBSD: grf_nubus.c,v 1.79 2023/12/20 00:40:43 thorpej 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 1.79 2023/12/20 00:40:43 thorpej 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/mman.h>
     41 #include <sys/proc.h>
     42 #include <sys/systm.h>
     43 
     44 #include <machine/bus.h>
     45 #include <machine/cpu.h>
     46 #include <machine/grfioctl.h>
     47 #include <machine/viareg.h>
     48 
     49 #include <mac68k/nubus/nubus.h>
     50 #include <mac68k/dev/grfvar.h>
     51 
     52 static void	load_image_data(void *, struct image_data *);
     53 
     54 static void	grfmv_intr_generic_write1(void *);
     55 static void	grfmv_intr_generic_write4(void *);
     56 static void	grfmv_intr_generic_or4(void *);
     57 
     58 static void	grfmv_intr_cb264(void *);
     59 static void	grfmv_intr_cb364(void *);
     60 static void	grfmv_intr_cmax(void *);
     61 static void	grfmv_intr_cti(void *);
     62 static void	grfmv_intr_radius(void *);
     63 static void	grfmv_intr_radius24(void *);
     64 static void	grfmv_intr_supermacgfx(void *);
     65 static void	grfmv_intr_lapis(void *);
     66 static void	grfmv_intr_formac(void *);
     67 static void	grfmv_intr_vimage(void *);
     68 static void	grfmv_intr_gvimage(void *);
     69 static void	grfmv_intr_radius_gsc(void *);
     70 static void	grfmv_intr_radius_gx(void *);
     71 static void	grfmv_intr_relax_200(void *);
     72 static void	grfmv_intr_mvc(void *);
     73 static void	grfmv_intr_viltro_340(void *);
     74 
     75 static int	grfmv_mode(struct grf_softc *, int, void *);
     76 static int	grfmv_match(device_t, cfdata_t, void *);
     77 static void	grfmv_attach(device_t, device_t, void *);
     78 
     79 CFATTACH_DECL_NEW(macvid, sizeof(struct grfbus_softc),
     80     grfmv_match, grfmv_attach, NULL, NULL);
     81 
     82 static void
     83 load_image_data(void *	data, struct image_data *image)
     84 {
     85 	char *d = (char*)data;
     86 
     87 	memcpy(&image->size,       d     , 4);
     88 	memcpy(&image->offset,     d +  4, 4);
     89 	memcpy(&image->rowbytes,   d +  8, 2);
     90 	memcpy(&image->top,        d + 10, 2);
     91 	memcpy(&image->left,       d + 12, 2);
     92 	memcpy(&image->bottom,     d + 14, 2);
     93 	memcpy(&image->right,      d + 16, 2);
     94 	memcpy(&image->version,    d + 18, 2);
     95 	memcpy(&image->packType,   d + 20, 2);
     96 	memcpy(&image->packSize,   d + 22, 4);
     97 	memcpy(&image->hRes,       d + 26, 4);
     98 	memcpy(&image->vRes,       d + 30, 4);
     99 	memcpy(&image->pixelType,  d + 34, 2);
    100 	memcpy(&image->pixelSize,  d + 36, 2);
    101 	memcpy(&image->cmpCount,   d + 38, 2);
    102 	memcpy(&image->cmpSize,    d + 40, 2);
    103 	memcpy(&image->planeBytes, d + 42, 4);
    104 }
    105 
    106 
    107 static int
    108 grfmv_match(device_t parent, cfdata_t cf, void *aux)
    109 {
    110 	struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
    111 
    112 	if (na->category != NUBUS_CATEGORY_DISPLAY)
    113 		return 0;
    114 
    115 	if (na->type != NUBUS_TYPE_VIDEO)
    116 		return 0;
    117 
    118 	if (na->drsw != NUBUS_DRSW_APPLE)
    119 		return 0;
    120 
    121 	/*
    122 	 * If we've gotten this far, then we're dealing with a real-live
    123 	 * Apple QuickDraw-compatible display card resource.  Now, how to
    124 	 * determine that this is an active resource???  Dunno.  But we'll
    125 	 * proceed like it is.
    126 	 */
    127 
    128 	return 1;
    129 }
    130 
    131 static void
    132 grfmv_attach(device_t parent, device_t self, void *aux)
    133 {
    134 	struct grfbus_softc *sc = device_private(self);
    135 	struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
    136 	struct image_data image_store, image;
    137 	struct grfmode *gm;
    138 	char cardname[CARD_NAME_LEN];
    139 	nubus_dirent dirent;
    140 	nubus_dir dir, mode_dir;
    141 	int mode;
    142 
    143 	memcpy(&sc->sc_slot, na->fmt, sizeof(nubus_slot));
    144 
    145 	sc->sc_dev = self;
    146 	sc->sc_tag = na->na_tag;
    147 	sc->card_id = na->drhw;
    148 	sc->sc_basepa = (bus_addr_t)NUBUS_SLOT2PA(na->slot);
    149 	sc->sc_fbofs = 0;
    150 
    151 	if (bus_space_map(sc->sc_tag, sc->sc_basepa, NBMEMSIZE,
    152 	    0, &sc->sc_handle)) {
    153 		printf(": grfmv_attach: failed to map slot %d\n", na->slot);
    154 		return;
    155 	}
    156 
    157 	nubus_get_main_dir(&sc->sc_slot, &dir);
    158 
    159 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    160 	    &sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) {
    161 bad:
    162 		bus_space_unmap(sc->sc_tag, sc->sc_handle, NBMEMSIZE);
    163 		return;
    164 	}
    165 
    166 	nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir);
    167 
    168 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    169 	    &sc->sc_slot, &sc->board_dir, NUBUS_RSRC_TYPE, &dirent) <= 0)
    170 		if ((na->rsrcid != 128) ||
    171 		    (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    172 		    &sc->sc_slot, &dir, 129, &dirent) <= 0))
    173 			goto bad;
    174 
    175 	mode = NUBUS_RSRC_FIRSTMODE;
    176 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    177 	    &sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) {
    178 		printf(": probe failed to get board rsrc.\n");
    179 		goto bad;
    180 	}
    181 
    182 	nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir);
    183 
    184 	if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
    185 	    &sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) <= 0) {
    186 		printf(": probe failed to get mode dir.\n");
    187 		goto bad;
    188 	}
    189 
    190 	if (nubus_get_ind_data(sc->sc_tag, sc->sc_handle, &sc->sc_slot,
    191 	    &dirent, (void *)&image_store, sizeof(struct image_data)) <= 0) {
    192 		printf(": probe failed to get indirect mode data.\n");
    193 		goto bad;
    194 	}
    195 
    196 	/* Need to load display info (and driver?), etc... (?) */
    197 
    198 	load_image_data((void *)&image_store, &image);
    199 
    200 	gm = &sc->curr_mode;
    201 	gm->mode_id = mode;
    202 	gm->ptype = image.pixelType;
    203 	gm->psize = image.pixelSize;
    204 	gm->width = image.right - image.left;
    205 	gm->height = image.bottom - image.top;
    206 	gm->rowbytes = image.rowbytes;
    207 	gm->hres = image.hRes;
    208 	gm->vres = image.vRes;
    209 	gm->fbsize = gm->height * gm->rowbytes;
    210 	gm->fbbase = (void *)(sc->sc_handle.base);	/* XXX evil hack */
    211 	gm->fboff = image.offset;
    212 
    213 	strncpy(cardname, nubus_get_card_name(sc->sc_tag, sc->sc_handle,
    214 	    &sc->sc_slot), CARD_NAME_LEN);
    215 	cardname[CARD_NAME_LEN-1] = '\0';
    216 	printf(": %s\n", cardname);
    217 
    218 	if (sc->card_id == NUBUS_DRHW_TFB) {
    219 		/*
    220 		 * This is the Toby card, but apparently some manufacturers
    221 		 * (like Cornerstone) didn't bother to get/use their own
    222 		 * value here, even though the cards are different, so we
    223 		 * try to differentiate here.
    224 		 */
    225 		if (strncmp(cardname, "Samsung 768", 11) == 0)
    226 			sc->card_id = NUBUS_DRHW_SAM768;
    227 		else if (strncmp(cardname, "Toby frame", 10) != 0)
    228 			printf("%s: This display card pretends to be a TFB!\n",
    229 			    device_xname(self));
    230 	}
    231 
    232 	switch (sc->card_id) {
    233 	case NUBUS_DRHW_TFB:
    234 	case NUBUS_DRHW_M2HRVC:
    235 	case NUBUS_DRHW_PVC:
    236 		sc->cli_offset = 0xa0000;
    237 		sc->cli_value = 0;
    238 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    239 		break;
    240 	case NUBUS_DRHW_WVC:
    241 		sc->cli_offset = 0xa00000;
    242 		sc->cli_value = 0;
    243 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    244 		break;
    245 	case NUBUS_DRHW_COLORMAX:
    246 		add_nubus_intr(na->slot, grfmv_intr_cmax, sc);
    247 		break;
    248 	case NUBUS_DRHW_SE30:
    249 		/* Do nothing--SE/30 interrupts are disabled */
    250 		break;
    251 	case NUBUS_DRHW_MDC:
    252 		sc->cli_offset = 0x200148;
    253 		sc->cli_value = 1;
    254 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    255 
    256 		/* Enable interrupts; to disable, write 0x7 to this location */
    257 		bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x20013C, 5);
    258 		break;
    259 	case NUBUS_DRHW_CB264:
    260 		add_nubus_intr(na->slot, grfmv_intr_cb264, sc);
    261 		break;
    262 	case NUBUS_DRHW_CB364:
    263 		add_nubus_intr(na->slot, grfmv_intr_cb364, sc);
    264 		break;
    265 	case NUBUS_DRHW_RPC8:
    266 		sc->cli_offset = 0xfdff8f;
    267 		sc->cli_value = 0xff;
    268 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    269 		break;
    270 	case NUBUS_DRHW_RPC8XJ:
    271 		sc->cli_value = 0x66;
    272 		add_nubus_intr(na->slot, grfmv_intr_radius, sc);
    273 		break;
    274 	case NUBUS_DRHW_RPC24X:
    275 	case NUBUS_DRHW_BOOGIE:
    276 		sc->cli_value = 0x64;
    277 		add_nubus_intr(na->slot, grfmv_intr_radius, sc);
    278 		break;
    279 	case NUBUS_DRHW_RPC24XP:
    280 		add_nubus_intr(na->slot, grfmv_intr_radius24, sc);
    281 		break;
    282 	case NUBUS_DRHW_RADGSC:
    283 		add_nubus_intr(na->slot, grfmv_intr_radius_gsc, sc);
    284 		break;
    285 	case NUBUS_DRHW_RDCGX:
    286 		add_nubus_intr(na->slot, grfmv_intr_radius_gx, sc);
    287 		break;
    288 	case NUBUS_DRHW_FIILX:
    289 	case NUBUS_DRHW_FIISXDSP:
    290 	case NUBUS_DRHW_FUTURASX:
    291 		sc->cli_offset = 0xf05000;
    292 		sc->cli_value = 0x80;
    293 		add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
    294 		break;
    295 	case NUBUS_DRHW_SAM768:
    296 		add_nubus_intr(na->slot, grfmv_intr_cti, sc);
    297 		break;
    298 	case NUBUS_DRHW_SUPRGFX:
    299 		add_nubus_intr(na->slot, grfmv_intr_supermacgfx, sc);
    300 		break;
    301 	case NUBUS_DRHW_SPECTRM8:
    302 		sc->cli_offset = 0x0de178;
    303 		sc->cli_value = 0x80;
    304 		add_nubus_intr(na->slot, grfmv_intr_generic_or4, sc);
    305 		break;
    306 	case NUBUS_DRHW_LAPIS:
    307 		add_nubus_intr(na->slot, grfmv_intr_lapis, sc);
    308 		break;
    309 	case NUBUS_DRHW_RELAX200:
    310 		add_nubus_intr(na->slot, grfmv_intr_relax_200, sc);
    311 		break;
    312 	case NUBUS_DRHW_BAER:
    313 	case NUBUS_DRHW_FORMAC:
    314 		add_nubus_intr(na->slot, grfmv_intr_formac, sc);
    315 		break;
    316 	case NUBUS_DRHW_ROPS24LXI:
    317 	case NUBUS_DRHW_ROPS24XLTV:
    318 	case NUBUS_DRHW_ROPS24MXTV:
    319 		sc->cli_offset = 0xfb0010;
    320 		sc->cli_value = 0x00;
    321 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    322 		break;
    323 	case NUBUS_DRHW_ROPSPPGT:
    324 		sc->cli_offset = 0xf50010;
    325 		sc->cli_value = 0x02;
    326 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    327 		break;
    328 	case NUBUS_DRHW_VIMAGE:
    329 		add_nubus_intr(na->slot, grfmv_intr_vimage, sc);
    330 		break;
    331 	case NUBUS_DRHW_GVIMAGE:
    332 		add_nubus_intr(na->slot, grfmv_intr_gvimage, sc);
    333 		break;
    334 	case NUBUS_DRHW_MC2124NB:
    335 		sc->cli_offset = 0xfd1000;
    336 		sc->cli_value = 0x00;
    337 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    338 		break;
    339 	case NUBUS_DRHW_MICRON:
    340 		sc->cli_offset = 0xa00014;
    341 		sc->cli_value = 0;
    342 		add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
    343 		break;
    344 	case NUBUS_DRHW_MVC:
    345 		add_nubus_intr(na->slot, grfmv_intr_mvc, sc);
    346 		break;
    347 	case NUBUS_DRHW_VILTRO340:
    348 		add_nubus_intr(na->slot, grfmv_intr_viltro_340, sc);
    349 		break;
    350 	default:
    351 		printf("%s: Unknown video card ID 0x%x --",
    352 		    device_xname(self), sc->card_id);
    353 		printf(" Not installing interrupt routine.\n");
    354 		break;
    355 	}
    356 
    357 	/* Perform common video attachment. */
    358 	grf_establish(sc, &sc->sc_slot, grfmv_mode);
    359 }
    360 
    361 static int
    362 grfmv_mode(struct grf_softc *gp, int cmd, void *arg)
    363 {
    364 	switch (cmd) {
    365 	case GM_GRFON:
    366 	case GM_GRFOFF:
    367 		return 0;
    368 	case GM_CURRMODE:
    369 		break;
    370 	case GM_NEWMODE:
    371 		break;
    372 	case GM_LISTMODES:
    373 		break;
    374 	}
    375 	return EINVAL;
    376 }
    377 
    378 /* Interrupt handlers... */
    379 /*
    380  * Generic routine to clear interrupts for cards where it simply takes
    381  * a MOV.B to clear the interrupt.  The offset and value of this byte
    382  * varies between cards.
    383  */
    384 /*ARGSUSED*/
    385 static void
    386 grfmv_intr_generic_write1(void *vsc)
    387 {
    388 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    389 
    390 	bus_space_write_1(sc->sc_tag, sc->sc_handle,
    391 	    sc->cli_offset, (u_int8_t)sc->cli_value);
    392 }
    393 
    394 /*
    395  * Generic routine to clear interrupts for cards where it simply takes
    396  * a MOV.L to clear the interrupt.  The offset and value of this byte
    397  * varies between cards.
    398  */
    399 /*ARGSUSED*/
    400 static void
    401 grfmv_intr_generic_write4(void *vsc)
    402 {
    403 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    404 
    405 	bus_space_write_4(sc->sc_tag, sc->sc_handle,
    406 	    sc->cli_offset, sc->cli_value);
    407 }
    408 
    409 /*
    410  * Generic routine to clear interrupts for cards where it simply takes
    411  * an OR.L to clear the interrupt.  The offset and value of this byte
    412  * varies between cards.
    413  */
    414 /*ARGSUSED*/
    415 static void
    416 grfmv_intr_generic_or4(void *vsc)
    417 {
    418 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    419 	unsigned long	scratch;
    420 
    421 	scratch = bus_space_read_4(sc->sc_tag, sc->sc_handle, sc->cli_offset);
    422 	scratch |= 0x80;
    423 	bus_space_write_4(sc->sc_tag, sc->sc_handle, sc->cli_offset, scratch);
    424 }
    425 
    426 /*
    427  * Routine to clear interrupts for the Radius PrecisionColor 8xj card.
    428  */
    429 /*ARGSUSED*/
    430 static void
    431 grfmv_intr_radius(void *vsc)
    432 {
    433 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    434 	u_int8_t c;
    435 
    436 	c = sc->cli_value;
    437 
    438 	c |= 0x80;
    439 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    440 	c &= 0x7f;
    441 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    442 }
    443 
    444 /*
    445  * Routine to clear interrupts for the Radius PrecisionColor 24Xp card.
    446  * Is this what the 8xj routine is doing, too?
    447  */
    448 /*ARGSUSED*/
    449 static void
    450 grfmv_intr_radius24(void *vsc)
    451 {
    452 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    453 	u_int8_t c;
    454 
    455 	c = 0x80 | bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfffd8);
    456 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    457 	c &= 0x7f;
    458 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
    459 }
    460 
    461 /*
    462  * Routine to clear interrupts on Samsung 768x1006 video controller.
    463  * This controller was manufactured by Cornerstone Technology, Inc.,
    464  * now known as Cornerstone Imaging.
    465  *
    466  * To clear this interrupt, we apparently have to set, then clear,
    467  * bit 2 at byte offset 0x80000 from the card's base.
    468  *	Information for this provided by Brad Salai <bsalai (at) servtech.com>
    469  */
    470 /*ARGSUSED*/
    471 static void
    472 grfmv_intr_cti(void *vsc)
    473 {
    474 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    475 	u_int8_t c;
    476 
    477 	c = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x80000);
    478 	c |= 0x02;
    479 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
    480 	c &= 0xfd;
    481 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
    482 }
    483 
    484 /*ARGSUSED*/
    485 static void
    486 grfmv_intr_cb264(void *vsc)
    487 {
    488 	struct grfbus_softc *sc;
    489 	volatile char *slotbase;
    490 
    491 	sc = (struct grfbus_softc *)vsc;
    492 	slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
    493 	__asm volatile(
    494 		"	movl	%0,%%a0				\n"
    495 		"	movl	%%a0@(0xff6028),%%d0		\n"
    496 		"	andl	#0x2,%%d0			\n"
    497 		"	beq	_mv_intr0			\n"
    498 		"	movql	#0x3,%%d0			\n"
    499 		"_mv_intr0:					\n"
    500 		"	movl	%%a0@(0xff600c),%%d1		\n"
    501 		"	andl	#0x3,%%d1			\n"
    502 		"	cmpl	%%d1,%%d0			\n"
    503 		"	beq	_mv_intr_fin			\n"
    504 		"	movl	%%d0,%%a0@(0xff600c)		\n"
    505 		"	nop					\n"
    506 		"	tstb	%%d0				\n"
    507 		"	beq	_mv_intr1			\n"
    508 		"	movl	#0x0002,%%a0@(0xff6040)		\n"
    509 		"	movl	#0x0102,%%a0@(0xff6044)		\n"
    510 		"	movl	#0x0105,%%a0@(0xff6048)		\n"
    511 		"	movl	#0x000e,%%a0@(0xff604c)		\n"
    512 		"	movl	#0x001c,%%a0@(0xff6050)		\n"
    513 		"	movl	#0x00bc,%%a0@(0xff6054)		\n"
    514 		"	movl	#0x00c3,%%a0@(0xff6058)		\n"
    515 		"	movl	#0x0061,%%a0@(0xff605c)		\n"
    516 		"	movl	#0x0012,%%a0@(0xff6060)		\n"
    517 		"	bra	_mv_intr_fin			\n"
    518 		"_mv_intr1:					\n"
    519 		"	movl	#0x0002,%%a0@(0xff6040)		\n"
    520 		"	movl	#0x0209,%%a0@(0xff6044)		\n"
    521 		"	movl	#0x020c,%%a0@(0xff6048)		\n"
    522 		"	movl	#0x000f,%%a0@(0xff604c)		\n"
    523 		"	movl	#0x0027,%%a0@(0xff6050)		\n"
    524 		"	movl	#0x00c7,%%a0@(0xff6054)		\n"
    525 		"	movl	#0x00d7,%%a0@(0xff6058)		\n"
    526 		"	movl	#0x006b,%%a0@(0xff605c)		\n"
    527 		"	movl	#0x0029,%%a0@(0xff6060)		\n"
    528 		"_mv_intr_fin:					\n"
    529 		"	movl	#0x1,%%a0@(0xff6014)"
    530 		: : "g" (slotbase) : "a0","d0","d1");
    531 }
    532 
    533 /*
    534  * Support for the Colorboard 364 might be more complex than it needs to
    535  * be.  If we can find more information about this card, this might be
    536  * significantly simplified.  Contributions welcome...  :-)
    537  */
    538 /*ARGSUSED*/
    539 static void
    540 grfmv_intr_cb364(void *vsc)
    541 {
    542 	struct grfbus_softc *sc;
    543 	volatile char *slotbase;
    544 
    545 	sc = (struct grfbus_softc *)vsc;
    546 	slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
    547 	__asm volatile(
    548 		"	movl	%0,%%a0				\n"
    549 		"	movl	%%a0@(0xfe6028),%%d0		\n"
    550 		"	andl	#0x2,%%d0			\n"
    551 		"	beq	_cb364_intr4			\n"
    552 		"	movql	#0x3,%%d0			\n"
    553 		"	movl	%%a0@(0xfe6018),%%d1		\n"
    554 		"	movl	#0x3,%%a0@(0xfe6018)		\n"
    555 		"	movw	%%a0@(0xfe7010),%%d2		\n"
    556 		"	movl	%%d1,%%a0@(0xfe6018)		\n"
    557 		"	movl	%%a0@(0xfe6020),%%d1		\n"
    558 		"	btst	#0x06,%%d2			\n"
    559 		"	beq	_cb364_intr0			\n"
    560 		"	btst	#0x00,%%d1			\n"
    561 		"	beq	_cb364_intr5			\n"
    562 		"	bsr	_cb364_intr1			\n"
    563 		"	bra	_cb364_intr_out			\n"
    564 		"_cb364_intr0:					\n"
    565 		"	btst	#0x00,%%d1			\n"
    566 		"	bne	_cb364_intr5			\n"
    567 		"	bsr	_cb364_intr1			\n"
    568 		"	bra	_cb364_intr_out			\n"
    569 		"_cb364_intr1:					\n"
    570 		"	movl	%%d0,%%a0@(0xfe600c)		\n"
    571 		"	nop					\n"
    572 		"	tstb	%%d0				\n"
    573 		"	beq	_cb364_intr3			\n"
    574 		"	movl	#0x0002,%%a0@(0xfe6040)		\n"
    575 		"	movl	#0x0105,%%a0@(0xfe6048)		\n"
    576 		"	movl	#0x000e,%%a0@(0xfe604c)		\n"
    577 		"	movl	#0x00c3,%%a0@(0xfe6058)		\n"
    578 		"	movl	#0x0061,%%a0@(0xfe605c)		\n"
    579 		"	btst	#0x06,%%d2			\n"
    580 		"	beq	_cb364_intr2			\n"
    581 		"	movl	#0x001c,%%a0@(0xfe6050)		\n"
    582 		"	movl	#0x00bc,%%a0@(0xfe6054)		\n"
    583 		"	movl	#0x0012,%%a0@(0xfe6060)		\n"
    584 		"	movl	#0x000e,%%a0@(0xfe6044)		\n"
    585 		"	movl	#0x00c3,%%a0@(0xfe6064)		\n"
    586 		"	movl	#0x0061,%%a0@(0xfe6020)		\n"
    587 		"	rts					\n"
    588 		"_cb364_intr2:					\n"
    589 		"	movl	#0x0016,%%a0@(0xfe6050)		\n"
    590 		"	movl	#0x00b6,%%a0@(0xfe6054)		\n"
    591 		"	movl	#0x0011,%%a0@(0xfe6060)		\n"
    592 		"	movl	#0x0101,%%a0@(0xfe6044)		\n"
    593 		"	movl	#0x00bf,%%a0@(0xfe6064)		\n"
    594 		"	movl	#0x0001,%%a0@(0xfe6020)		\n"
    595 		"	rts					\n"
    596 		"_cb364_intr3:					\n"
    597 		"	movl	#0x0002,%%a0@(0xfe6040)		\n"
    598 		"	movl	#0x0209,%%a0@(0xfe6044)		\n"
    599 		"	movl	#0x020c,%%a0@(0xfe6048)		\n"
    600 		"	movl	#0x000f,%%a0@(0xfe604c)		\n"
    601 		"	movl	#0x0027,%%a0@(0xfe6050)		\n"
    602 		"	movl	#0x00c7,%%a0@(0xfe6054)		\n"
    603 		"	movl	#0x00d7,%%a0@(0xfe6058)		\n"
    604 		"	movl	#0x006b,%%a0@(0xfe605c)		\n"
    605 		"	movl	#0x0029,%%a0@(0xfe6060)		\n"
    606 		"	oril	#0x0040,%%a0@(0xfe6064)		\n"
    607 		"	movl	#0x0000,%%a0@(0xfe6020)		\n"
    608 		"	rts					\n"
    609 		"_cb364_intr4:					\n"
    610 		"	movq	#0x00,%%d0			\n"
    611 		"_cb364_intr5:					\n"
    612 		"	movl	%%a0@(0xfe600c),%%d1		\n"
    613 		"	andl	#0x3,%%d1			\n"
    614 		"	cmpl	%%d1,%%d0			\n"
    615 		"	beq	_cb364_intr_out			\n"
    616 		"	bsr	_cb364_intr1			\n"
    617 		"_cb364_intr_out:				\n"
    618 		"	movl	#0x1,%%a0@(0xfe6014)		\n"
    619 		"_cb364_intr_quit:"
    620 		: : "g" (slotbase) : "a0","d0","d1","d2");
    621 }
    622 
    623 /*
    624  * Interrupt clearing routine for SuperMac GFX card.
    625  */
    626 /*ARGSUSED*/
    627 static void
    628 grfmv_intr_supermacgfx(void *vsc)
    629 {
    630 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    631 
    632 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xE70D3);
    633 }
    634 
    635 /*
    636  * Routine to clear interrupts for the Sigma Designs ColorMax card.
    637  */
    638 /*ARGSUSED*/
    639 static void
    640 grfmv_intr_cmax(void *vsc)
    641 {
    642 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    643 
    644 	bus_space_read_4(sc->sc_tag, sc->sc_handle, 0xf501c);
    645 	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 
    672 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80db);
    673 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80d3);
    674 }
    675 
    676 /*
    677  * Routine to clear interrupts for the Vimage by Interware Co., Ltd.
    678  */
    679 /*ARGSUSED*/
    680 static void
    681 grfmv_intr_vimage(void *vsc)
    682 {
    683 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    684 
    685 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0x67);
    686 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0xE7);
    687 }
    688 
    689 /*
    690  * Routine to clear interrupts for the Grand Vimage by Interware Co., Ltd.
    691  */
    692 /*ARGSUSED*/
    693 static void
    694 grfmv_intr_gvimage(void *vsc)
    695 {
    696 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    697 
    698 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xf00000);
    699 }
    700 
    701 /*
    702  * Routine to clear interrupts for the Radius GS/C
    703  */
    704 /*ARGSUSED*/
    705 static void
    706 grfmv_intr_radius_gsc(void *vsc)
    707 {
    708 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    709 
    710 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfb802);
    711 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xfb802, 0xff);
    712 }
    713 
    714 /*
    715  * Routine to clear interrupts for the Radius GS/C
    716  */
    717 /*ARGSUSED*/
    718 static void
    719 grfmv_intr_radius_gx(void *vsc)
    720 {
    721 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    722 
    723 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x600000, 0x00);
    724 	bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x600000, 0x20);
    725 }
    726 
    727 /*
    728  * Routine to clear interrupts for the Relax 19" model 200.
    729  */
    730 /*ARGSUSED*/
    731 static void
    732 grfmv_intr_relax_200(void *vsc)
    733 {
    734 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    735 
    736 	/* The board ROM driver code has a tst.l here. */
    737 	bus_space_read_4(sc->sc_tag, sc->sc_handle, 0x000D0040);
    738 }
    739 
    740 /*
    741  * Routine to clear interrupts for the Apple Mac II Monochrome Video Card.
    742  */
    743 /*ARGSUSED*/
    744 static void
    745 grfmv_intr_mvc(void *vsc)
    746 {
    747 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    748 
    749 	bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x00040000, 0);
    750 	bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x00020000, 0);
    751 }
    752 
    753 /*
    754  * Routine to clear interrupts for the VillageTronic Mac Picasso 340.
    755  */
    756 /*ARGSUSED*/
    757 static void
    758 grfmv_intr_viltro_340(void *vsc)
    759 {
    760 	struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
    761 
    762 	/* Yes, two read accesses to the same spot. */
    763 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x0500);
    764 	bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x0500);
    765 }
    766