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NetBSD/sys/arch/mac68k/nubus/grf_nubus.c

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/* $NetBSD: grf_nubus.c,v 1.59 2000/07/30 21:39:16 briggs Exp $ */
/*
* Copyright (c) 1995 Allen Briggs. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Device-specific routines for handling Nubus-based video cards.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/grfioctl.h>
#include <machine/viareg.h>
#include <mac68k/nubus/nubus.h>
#include <mac68k/dev/grfvar.h>
static void load_image_data __P((caddr_t data, struct image_data *image));
static void grfmv_intr_generic_write1 __P((void *vsc));
static void grfmv_intr_generic_write4 __P((void *vsc));
static void grfmv_intr_generic_or4 __P((void *vsc));
static void grfmv_intr_cb264 __P((void *vsc));
static void grfmv_intr_cb364 __P((void *vsc));
static void grfmv_intr_cmax __P((void *vsc));
static void grfmv_intr_cti __P((void *vsc));
static void grfmv_intr_radius __P((void *vsc));
static void grfmv_intr_radius24 __P((void *vsc));
static void grfmv_intr_supermacgfx __P((void *vsc));
static void grfmv_intr_lapis __P((void *vsc));
static void grfmv_intr_formac __P((void *vsc));
static void grfmv_intr_vimage __P((void *vsc));
static void grfmv_intr_gvimage __P((void *vsc));
static void grfmv_intr_radius_gsc __P((void *vsc));
static int grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg));
static int grfmv_match __P((struct device *, struct cfdata *, void *));
static void grfmv_attach __P((struct device *, struct device *, void *));
struct cfattach macvid_ca = {
sizeof(struct grfbus_softc), grfmv_match, grfmv_attach
};
static void
load_image_data(data, image)
caddr_t data;
struct image_data *image;
{
bcopy(data , &image->size, 4);
bcopy(data + 4, &image->offset, 4);
bcopy(data + 8, &image->rowbytes, 2);
bcopy(data + 10, &image->top, 2);
bcopy(data + 12, &image->left, 2);
bcopy(data + 14, &image->bottom, 2);
bcopy(data + 16, &image->right, 2);
bcopy(data + 18, &image->version, 2);
bcopy(data + 20, &image->packType, 2);
bcopy(data + 22, &image->packSize, 4);
bcopy(data + 26, &image->hRes, 4);
bcopy(data + 30, &image->vRes, 4);
bcopy(data + 34, &image->pixelType, 2);
bcopy(data + 36, &image->pixelSize, 2);
bcopy(data + 38, &image->cmpCount, 2);
bcopy(data + 40, &image->cmpSize, 2);
bcopy(data + 42, &image->planeBytes, 4);
}
static int
grfmv_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
if (na->category != NUBUS_CATEGORY_DISPLAY)
return 0;
if (na->type != NUBUS_TYPE_VIDEO)
return 0;
if (na->drsw != NUBUS_DRSW_APPLE)
return 0;
/*
* If we've gotten this far, then we're dealing with a real-live
* Apple QuickDraw-compatible display card resource. Now, how to
* determine that this is an active resource??? Dunno. But we'll
* proceed like it is.
*/
return 1;
}
static void
grfmv_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct grfbus_softc *sc = (struct grfbus_softc *)self;
struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
struct image_data image_store, image;
struct grfmode *gm;
char cardname[CARD_NAME_LEN];
nubus_dirent dirent;
nubus_dir dir, mode_dir;
int mode;
bcopy(na->fmt, &sc->sc_slot, sizeof(nubus_slot));
sc->sc_tag = na->na_tag;
sc->card_id = na->drhw;
sc->sc_basepa = (bus_addr_t)NUBUS_SLOT2PA(na->slot);
sc->sc_fbofs = 0;
if (bus_space_map(sc->sc_tag, sc->sc_basepa, NBMEMSIZE,
0, &sc->sc_handle)) {
printf(": grfmv_attach: failed to map slot %d\n", na->slot);
return;
}
nubus_get_main_dir(&sc->sc_slot, &dir);
if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
&sc->sc_slot, &dir, na->rsrcid, &dirent) <= 0) {
bad:
bus_space_unmap(sc->sc_tag, sc->sc_handle, NBMEMSIZE);
return;
}
nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &sc->board_dir);
if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
&sc->sc_slot, &sc->board_dir, NUBUS_RSRC_TYPE, &dirent) <= 0)
if ((na->rsrcid != 128) ||
(nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
&sc->sc_slot, &dir, 129, &dirent) <= 0))
goto bad;
mode = NUBUS_RSRC_FIRSTMODE;
if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
&sc->sc_slot, &sc->board_dir, mode, &dirent) <= 0) {
printf(": probe failed to get board rsrc.\n");
goto bad;
}
nubus_get_dir_from_rsrc(&sc->sc_slot, &dirent, &mode_dir);
if (nubus_find_rsrc(sc->sc_tag, sc->sc_handle,
&sc->sc_slot, &mode_dir, VID_PARAMS, &dirent) <= 0) {
printf(": probe failed to get mode dir.\n");
goto bad;
}
if (nubus_get_ind_data(sc->sc_tag, sc->sc_handle, &sc->sc_slot,
&dirent, (caddr_t)&image_store, sizeof(struct image_data)) <= 0) {
printf(": probe failed to get indirect mode data.\n");
goto bad;
}
/* Need to load display info (and driver?), etc... (?) */
load_image_data((caddr_t)&image_store, &image);
gm = &sc->curr_mode;
gm->mode_id = mode;
gm->ptype = image.pixelType;
gm->psize = image.pixelSize;
gm->width = image.right - image.left;
gm->height = image.bottom - image.top;
gm->rowbytes = image.rowbytes;
gm->hres = image.hRes;
gm->vres = image.vRes;
gm->fbsize = gm->height * gm->rowbytes;
gm->fbbase = (caddr_t)(sc->sc_handle.base); /* XXX evil hack */
gm->fboff = image.offset;
strncpy(cardname, nubus_get_card_name(sc->sc_tag, sc->sc_handle,
&sc->sc_slot), CARD_NAME_LEN);
cardname[CARD_NAME_LEN-1] = '\0';
printf(": %s\n", cardname);
if (sc->card_id == NUBUS_DRHW_TFB) {
/*
* This is the Toby card, but apparently some manufacturers
* (like Cornerstone) didn't bother to get/use their own
* value here, even though the cards are different, so we
* so we try to differentiate here.
*/
if (strncmp(cardname, "Samsung 768", 11) == 0)
sc->card_id = NUBUS_DRHW_SAM768;
else if (strncmp(cardname, "Toby frame", 10) != 0)
printf("%s: This display card pretends to be a TFB!\n",
sc->sc_dev.dv_xname);
}
switch (sc->card_id) {
case NUBUS_DRHW_TFB:
case NUBUS_DRHW_M2HRVC:
case NUBUS_DRHW_PVC:
sc->cli_offset = 0xa0000;
sc->cli_value = 0;
add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
break;
case NUBUS_DRHW_WVC:
sc->cli_offset = 0xa00000;
sc->cli_value = 0;
add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
break;
case NUBUS_DRHW_COLORMAX:
add_nubus_intr(na->slot, grfmv_intr_cmax, sc);
break;
case NUBUS_DRHW_SE30:
/* Do nothing--SE/30 interrupts are disabled */
break;
case NUBUS_DRHW_MDC:
sc->cli_offset = 0x200148;
sc->cli_value = 1;
add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
/* Enable interrupts; to disable, write 0x7 to this location */
bus_space_write_4(sc->sc_tag, sc->sc_handle, 0x20013C, 5);
break;
case NUBUS_DRHW_CB264:
add_nubus_intr(na->slot, grfmv_intr_cb264, sc);
break;
case NUBUS_DRHW_CB364:
add_nubus_intr(na->slot, grfmv_intr_cb364, sc);
break;
case NUBUS_DRHW_RPC8:
sc->cli_offset = 0xfdff8f;
sc->cli_value = 0xff;
add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
break;
case NUBUS_DRHW_RPC8XJ:
sc->cli_value = 0x66;
add_nubus_intr(na->slot, grfmv_intr_radius, sc);
break;
case NUBUS_DRHW_RPC24X:
sc->cli_value = 0x64;
add_nubus_intr(na->slot, grfmv_intr_radius, sc);
break;
case NUBUS_DRHW_RPC24XP:
add_nubus_intr(na->slot, grfmv_intr_radius24, sc);
break;
case NUBUS_DRHW_RADGSC:
add_nubus_intr(na->slot, grfmv_intr_radius_gsc, sc);
break;
case NUBUS_DRHW_FIILX:
case NUBUS_DRHW_FIISXDSP:
case NUBUS_DRHW_FUTURASX:
sc->cli_offset = 0xf05000;
sc->cli_value = 0x80;
add_nubus_intr(na->slot, grfmv_intr_generic_write1, sc);
break;
case NUBUS_DRHW_SAM768:
add_nubus_intr(na->slot, grfmv_intr_cti, sc);
break;
case NUBUS_DRHW_SUPRGFX:
add_nubus_intr(na->slot, grfmv_intr_supermacgfx, sc);
break;
case NUBUS_DRHW_SPECTRM8:
sc->cli_offset = 0x0de178;
sc->cli_value = 0x80;
add_nubus_intr(na->slot, grfmv_intr_generic_or4, sc);
break;
case NUBUS_DRHW_LAPIS:
add_nubus_intr(na->slot, grfmv_intr_lapis, sc);
break;
case NUBUS_DRHW_FORMAC:
add_nubus_intr(na->slot, grfmv_intr_formac, sc);
break;
case NUBUS_DRHW_ROPS24LXI:
case NUBUS_DRHW_ROPS24XLTV:
case NUBUS_DRHW_ROPS24MXTV:
sc->cli_offset = 0xfb0010;
sc->cli_value = 0x00;
add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
break;
case NUBUS_DRHW_VIMAGE:
add_nubus_intr(na->slot, grfmv_intr_vimage, sc);
break;
case NUBUS_DRHW_GVIMAGE:
add_nubus_intr(na->slot, grfmv_intr_gvimage, sc);
break;
case NUBUS_DRHW_MC2124NB:
sc->cli_offset = 0xfd1000;
sc->cli_value = 0x00;
add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
break;
case NUBUS_DRHW_MICRON:
sc->cli_offset = 0xa00014;
sc->cli_value = 0;
add_nubus_intr(na->slot, grfmv_intr_generic_write4, sc);
break;
default:
printf("%s: Unknown video card ID 0x%x --",
sc->sc_dev.dv_xname, sc->card_id);
printf(" Not installing interrupt routine.\n");
break;
}
/* Perform common video attachment. */
grf_establish(sc, &sc->sc_slot, grfmv_mode);
}
static int
grfmv_mode(gp, cmd, arg)
struct grf_softc *gp;
int cmd;
void *arg;
{
switch (cmd) {
case GM_GRFON:
case GM_GRFOFF:
return 0;
case GM_CURRMODE:
break;
case GM_NEWMODE:
break;
case GM_LISTMODES:
break;
}
return EINVAL;
}
/* Interrupt handlers... */
/*
* Generic routine to clear interrupts for cards where it simply takes
* a MOV.B to clear the interrupt. The offset and value of this byte
* varies between cards.
*/
/*ARGSUSED*/
static void
grfmv_intr_generic_write1(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
bus_space_write_1(sc->sc_tag, sc->sc_handle,
sc->cli_offset, (u_int8_t)sc->cli_value);
}
/*
* Generic routine to clear interrupts for cards where it simply takes
* a MOV.L to clear the interrupt. The offset and value of this byte
* varies between cards.
*/
/*ARGSUSED*/
static void
grfmv_intr_generic_write4(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
bus_space_write_4(sc->sc_tag, sc->sc_handle,
sc->cli_offset, sc->cli_value);
}
/*
* Generic routine to clear interrupts for cards where it simply takes
* an OR.L to clear the interrupt. The offset and value of this byte
* varies between cards.
*/
/*ARGSUSED*/
static void
grfmv_intr_generic_or4(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
unsigned long scratch;
scratch = bus_space_read_4(sc->sc_tag, sc->sc_handle, sc->cli_offset);
scratch |= 0x80;
bus_space_write_4(sc->sc_tag, sc->sc_handle, sc->cli_offset, scratch);
}
/*
* Routine to clear interrupts for the Radius PrecisionColor 8xj card.
*/
/*ARGSUSED*/
static void
grfmv_intr_radius(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t c;
c = sc->cli_value;
c |= 0x80;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
c &= 0x7f;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
}
/*
* Routine to clear interrupts for the Radius PrecisionColor 24Xp card.
* Is this what the 8xj routine is doing, too?
*/
/*ARGSUSED*/
static void
grfmv_intr_radius24(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t c;
c = 0x80 | bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfffd8);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
c &= 0x7f;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xd00403, c);
}
/*
* Routine to clear interrupts on Samsung 768x1006 video controller.
* This controller was manufactured by Cornerstone Technology, Inc.,
* now known as Cornerstone Imaging.
*
* To clear this interrupt, we apparently have to set, then clear,
* bit 2 at byte offset 0x80000 from the card's base.
* Information for this provided by Brad Salai <bsalai@servtech.com>
*/
/*ARGSUSED*/
static void
grfmv_intr_cti(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t c;
c = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0x80000);
c |= 0x02;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
c &= 0xfd;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80000, c);
}
/*ARGSUSED*/
static void
grfmv_intr_cb264(vsc)
void *vsc;
{
struct grfbus_softc *sc;
volatile char *slotbase;
sc = (struct grfbus_softc *)vsc;
slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
asm volatile(" movl %0,a0
movl a0@(0xff6028),d0
andl #0x2,d0
beq _mv_intr0
movql #0x3,d0
_mv_intr0:
movl a0@(0xff600c),d1
andl #0x3,d1
cmpl d1,d0
beq _mv_intr_fin
movl d0,a0@(0xff600c)
nop
tstb d0
beq _mv_intr1
movl #0x0002,a0@(0xff6040)
movl #0x0102,a0@(0xff6044)
movl #0x0105,a0@(0xff6048)
movl #0x000e,a0@(0xff604c)
movl #0x001c,a0@(0xff6050)
movl #0x00bc,a0@(0xff6054)
movl #0x00c3,a0@(0xff6058)
movl #0x0061,a0@(0xff605c)
movl #0x0012,a0@(0xff6060)
bra _mv_intr_fin
_mv_intr1:
movl #0x0002,a0@(0xff6040)
movl #0x0209,a0@(0xff6044)
movl #0x020c,a0@(0xff6048)
movl #0x000f,a0@(0xff604c)
movl #0x0027,a0@(0xff6050)
movl #0x00c7,a0@(0xff6054)
movl #0x00d7,a0@(0xff6058)
movl #0x006b,a0@(0xff605c)
movl #0x0029,a0@(0xff6060)
_mv_intr_fin:
movl #0x1,a0@(0xff6014)"
: : "g" (slotbase) : "a0","d0","d1");
}
/*
* Support for the Colorboard 364 might be more complex than it needs to
* be. If we can find more information about this card, this might be
* significantly simplified. Contributions welcome... :-)
*/
/*ARGSUSED*/
static void
grfmv_intr_cb364(vsc)
void *vsc;
{
struct grfbus_softc *sc;
volatile char *slotbase;
sc = (struct grfbus_softc *)vsc;
slotbase = (volatile char *)(sc->sc_handle.base); /* XXX evil hack */
asm volatile(" movl %0,a0
movl a0@(0xfe6028),d0
andl #0x2,d0
beq _cb364_intr4
movql #0x3,d0
movl a0@(0xfe6018),d1
movl #0x3,a0@(0xfe6018)
movw a0@(0xfe7010),d2
movl d1,a0@(0xfe6018)
movl a0@(0xfe6020),d1
btst #0x06,d2
beq _cb364_intr0
btst #0x00,d1
beq _cb364_intr5
bsr _cb364_intr1
bra _cb364_intr_out
_cb364_intr0:
btst #0x00,d1
bne _cb364_intr5
bsr _cb364_intr1
bra _cb364_intr_out
_cb364_intr1:
movl d0,a0@(0xfe600c)
nop
tstb d0
beq _cb364_intr3
movl #0x0002,a0@(0xfe6040)
movl #0x0105,a0@(0xfe6048)
movl #0x000e,a0@(0xfe604c)
movl #0x00c3,a0@(0xfe6058)
movl #0x0061,a0@(0xfe605c)
btst #0x06,d2
beq _cb364_intr2
movl #0x001c,a0@(0xfe6050)
movl #0x00bc,a0@(0xfe6054)
movl #0x0012,a0@(0xfe6060)
movl #0x000e,a0@(0xfe6044)
movl #0x00c3,a0@(0xfe6064)
movl #0x0061,a0@(0xfe6020)
rts
_cb364_intr2:
movl #0x0016,a0@(0xfe6050)
movl #0x00b6,a0@(0xfe6054)
movl #0x0011,a0@(0xfe6060)
movl #0x0101,a0@(0xfe6044)
movl #0x00bf,a0@(0xfe6064)
movl #0x0001,a0@(0xfe6020)
rts
_cb364_intr3:
movl #0x0002,a0@(0xfe6040)
movl #0x0209,a0@(0xfe6044)
movl #0x020c,a0@(0xfe6048)
movl #0x000f,a0@(0xfe604c)
movl #0x0027,a0@(0xfe6050)
movl #0x00c7,a0@(0xfe6054)
movl #0x00d7,a0@(0xfe6058)
movl #0x006b,a0@(0xfe605c)
movl #0x0029,a0@(0xfe6060)
oril #0x0040,a0@(0xfe6064)
movl #0x0000,a0@(0xfe6020)
rts
_cb364_intr4:
movq #0x00,d0
_cb364_intr5:
movl a0@(0xfe600c),d1
andl #0x3,d1
cmpl d1,d0
beq _cb364_intr_out
bsr _cb364_intr1
_cb364_intr_out:
movl #0x1,a0@(0xfe6014)
_cb364_intr_quit:
" : : "g" (slotbase) : "a0","d0","d1","d2");
}
/*
* Interrupt clearing routine for SuperMac GFX card.
*/
/*ARGSUSED*/
static void
grfmv_intr_supermacgfx(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t dummy;
dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xE70D3);
}
/*
* Routine to clear interrupts for the Sigma Designs ColorMax card.
*/
/*ARGSUSED*/
static void
grfmv_intr_cmax(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int32_t dummy;
dummy = bus_space_read_4(sc->sc_tag, sc->sc_handle, 0xf501c);
dummy = bus_space_read_4(sc->sc_tag, sc->sc_handle, 0xf5018);
}
/*
* Routine to clear interrupts for the Lapis ProColorServer 8 PDS card
* (for the SE/30).
*/
/*ARGSUSED*/
static void
grfmv_intr_lapis(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xff7000, 0x08);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xff7000, 0x0C);
}
/*
* Routine to clear interrupts for the Formac Color Card II
*/
/*ARGSUSED*/
static void
grfmv_intr_formac(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t dummy;
dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80db);
dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xde80d3);
}
/*
* Routine to clear interrupts for the Vimage by Interware Co., Ltd.
*/
/*ARGSUSED*/
static void
grfmv_intr_vimage(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0x67);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x800000, 0xE7);
}
/*
* Routine to clear interrupts for the Grand Vimage by Interware Co., Ltd.
*/
/*ARGSUSED*/
static void
grfmv_intr_gvimage(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t dummy;
dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xf00000);
}
/*
* Routine to clear interrupts for the Radius GS/C
*/
/*ARGSUSED*/
static void
grfmv_intr_radius_gsc(vsc)
void *vsc;
{
struct grfbus_softc *sc = (struct grfbus_softc *)vsc;
u_int8_t dummy;
dummy = bus_space_read_1(sc->sc_tag, sc->sc_handle, 0xfb802);
bus_space_write_1(sc->sc_tag, sc->sc_handle, 0xfb802, 0xff);
}
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