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/* $OpenBSD: cgeight.c,v 1.30 2010/06/07 19:43:45 miod Exp $ */
/* $NetBSD: cgeight.c,v 1.13 1997/05/24 20:16:04 pk Exp $ */
/*
* Copyright (c) 2002 Miodrag Vallat. All rights reserved.
* Copyright (c) 1996 Jason R. Thorpe. All rights reserved.
* Copyright (c) 1995 Theo de Raadt
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from @(#)cgthree.c 8.2 (Berkeley) 10/30/93
*/
/*
* color display (cgeight) driver.
*
* For performance reasons, we run the emulation mode in the (monochrome)
* overlay plane, but X11 in the 24-bit color plane.
*
* Does not handle interrupts, even though they can occur.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/eeprom.h>
#include <machine/conf.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <machine/fbvar.h>
#include <sparc/dev/btreg.h>
#include <sparc/dev/btvar.h>
#include <sparc/dev/pfourreg.h>
/* per-display variables */
struct cgeight_softc {
struct sunfb sc_sunfb; /* common base device */
struct rom_reg sc_phys;
volatile struct fbcontrol *sc_fbc; /* Brooktree registers */
volatile u_char *sc_enable; /* enable plane */
};
int cgeight_ioctl(void *, u_long, caddr_t, int, struct proc *);
paddr_t cgeight_mmap(void *, off_t, int);
void cgeight_reset(struct cgeight_softc *, int);
struct wsdisplay_accessops cgeight_accessops = {
cgeight_ioctl,
cgeight_mmap,
NULL, /* alloc_screen */
NULL, /* free_screen */
NULL, /* show_screen */
NULL, /* load_font */
NULL, /* scrollback */
NULL, /* getchar */
fb_pfour_burner,
NULL /* pollc */
};
void cgeightattach(struct device *, struct device *, void *);
int cgeightmatch(struct device *, void *, void *);
struct cfattach cgeight_ca = {
sizeof(struct cgeight_softc), cgeightmatch, cgeightattach
};
struct cfdriver cgeight_cd = {
NULL, "cgeight", DV_DULL
};
int
cgeightmatch(struct device *parent, void *vcf, void *aux)
{
struct cfdata *cf = vcf;
struct confargs *ca = aux;
struct romaux *ra = &ca->ca_ra;
if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
return (0);
if (!CPU_ISSUN4 || ca->ca_bustype != BUS_OBIO)
return (0);
/*
* Make sure there's hardware there.
*/
if (probeget(ra->ra_vaddr, 4) == -1)
return (0);
/*
* Check the pfour register.
*/
if (fb_pfour_id(ra->ra_vaddr) == PFOUR_ID_COLOR24)
return (1);
return (0);
}
void
cgeightattach(struct device *parent, struct device *self, void *args)
{
struct cgeight_softc *sc = (struct cgeight_softc *)self;
struct confargs *ca = args;
int node = 0;
volatile struct bt_regs *bt;
int isconsole = 0;
/* Map the pfour register. */
SET(sc->sc_sunfb.sf_flags, FB_PFOUR);
sc->sc_sunfb.sf_pfour = (volatile u_int32_t *)
mapiodev(ca->ca_ra.ra_reg, 0, sizeof(u_int32_t));
if (cputyp == CPU_SUN4) {
struct eeprom *eep = (struct eeprom *)eeprom_va;
/*
* Assume this is the console if there's no eeprom info
* to be found.
*/
if (eep == NULL || eep->ee_diag.eed_console == EED_CONS_P4)
isconsole = 1;
}
/* Map the Brooktree. */
sc->sc_fbc = (volatile struct fbcontrol *)
mapiodev(ca->ca_ra.ra_reg,
PFOUR_COLOR_OFF_CMAP, sizeof(struct fbcontrol));
sc->sc_phys = ca->ca_ra.ra_reg[0];
/* enable video */
fb_pfour_burner(sc, 1, 0);
bt = &sc->sc_fbc->fbc_dac;
BT_INIT(bt, 0);
fb_setsize(&sc->sc_sunfb, 1, 1152, 900, node, ca->ca_bustype);
sc->sc_sunfb.sf_ro.ri_hw = sc;
/*
* Map the overlay and overlay enable planes.
*/
sc->sc_enable = (volatile u_char *)mapiodev(ca->ca_ra.ra_reg,
PFOUR_COLOR_OFF_ENABLE, round_page(sc->sc_sunfb.sf_fbsize));
sc->sc_sunfb.sf_ro.ri_bits = mapiodev(ca->ca_ra.ra_reg,
PFOUR_COLOR_OFF_OVERLAY, round_page(sc->sc_sunfb.sf_fbsize));
cgeight_reset(sc, WSDISPLAYIO_MODE_EMUL);
printf(": p4, %dx%d", sc->sc_sunfb.sf_width,
sc->sc_sunfb.sf_height);
fbwscons_init(&sc->sc_sunfb, isconsole);
if (isconsole)
fbwscons_console_init(&sc->sc_sunfb, -1);
fbwscons_attach(&sc->sc_sunfb, &cgeight_accessops, isconsole);
}
void
cgeight_reset(struct cgeight_softc *sc, int mode)
{
volatile struct bt_regs *bt;
union bt_cmap cm;
u_int c;
bt = &sc->sc_fbc->fbc_dac;
/*
* Depending on the mode requested, disable or enable
* the overlay plane.
*/
if (mode == WSDISPLAYIO_MODE_EMUL) {
memset((void *)sc->sc_enable, 0xff,
round_page(sc->sc_sunfb.sf_fbsize));
/* Setup a strict mono colormap */
cm.cm_map[0][0] = cm.cm_map[0][1] = cm.cm_map[0][2] = 0x00;
for (c = 1; c < 256; c++) {
cm.cm_map[c][0] = cm.cm_map[c][1] = cm.cm_map[c][2] =
0xff;
}
} else {
memset((void *)sc->sc_enable, 0x00,
round_page(sc->sc_sunfb.sf_fbsize));
/* Setup a ramp colormap (direct color) */
for (c = 0; c < 256; c++) {
cm.cm_map[c][0] = cm.cm_map[c][1] = cm.cm_map[c][2] = c;
}
}
/* Upload the colormap into the DAC */
bt_loadcmap(&cm, bt, 0, 256, 0);
}
int
cgeight_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p)
{
struct cgeight_softc *sc = v;
struct wsdisplay_fbinfo *wdf;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_SUNCG8;
break;
case WSDISPLAYIO_GINFO:
wdf = (struct wsdisplay_fbinfo *)data;
wdf->height = sc->sc_sunfb.sf_height;
wdf->width = sc->sc_sunfb.sf_width;
wdf->depth = 24;
wdf->cmsize = 0;
break;
case WSDISPLAYIO_SMODE:
cgeight_reset(sc, *(int *)data);
break;
case WSDISPLAYIO_SVIDEO:
case WSDISPLAYIO_GVIDEO:
break;
case WSDISPLAYIO_GETCMAP: /* nothing to do */
case WSDISPLAYIO_PUTCMAP: /* nothing to do */
case WSDISPLAYIO_GCURPOS: /* not supported */
case WSDISPLAYIO_SCURPOS: /* not supported */
case WSDISPLAYIO_GCURMAX: /* not supported */
case WSDISPLAYIO_GCURSOR: /* not supported */
case WSDISPLAYIO_SCURSOR: /* not supported */
default:
return (-1);
}
return (0);
}
paddr_t
cgeight_mmap(void *v, off_t offset, int prot)
{
struct cgeight_softc *sc = v;
if (offset & PGOFSET)
return (-1);
/* Allow mapping of the 24-bit color planes */
if (offset >= 0 && offset < round_page(24 * sc->sc_sunfb.sf_fbsize)) {
return (REG2PHYS(&sc->sc_phys,
offset + PFOUR_COLOR_OFF_COLOR) | PMAP_NC);
}
return (-1);
}
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