NetBSD/sys/arch/sparc/dev/cgthree.c

589 lines
16 KiB
C

/* $NetBSD: cgthree.c,v 1.37 1998/04/07 20:18:18 pk Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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. 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, Berkeley and its contributors.
* 4. 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.
*
* @(#)cgthree.c 8.2 (Berkeley) 10/30/93
*/
/*
* color display (cgthree) driver.
*
* Does not handle interrupts, even though they can occur.
*
* XXX should defer colormap updates to vertical retrace interrupts
*/
#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 <vm/vm.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/fbio.h>
#include <machine/pmap.h>
#include <machine/fbvar.h>
#include <machine/cpu.h>
#include <machine/conf.h>
#include <sparc/dev/btreg.h>
#include <sparc/dev/btvar.h>
#include <sparc/dev/cgthreereg.h>
#include <sparc/dev/sbusvar.h>
/* per-display variables */
struct cgthree_softc {
struct device sc_dev; /* base device */
struct sbusdev sc_sd; /* sbus device */
struct fbdevice sc_fb; /* frame buffer device */
bus_space_tag_t sc_bustag;
bus_type_t sc_btype; /* phys address description */
bus_addr_t sc_paddr; /* for device mmap() */
volatile struct fbcontrol *sc_fbc; /* Brooktree registers */
union bt_cmap sc_cmap; /* Brooktree color map */
};
/* autoconfiguration driver */
static int cgthreematch_sbus(struct device *, struct cfdata *, void *);
static int cgthreematch_obio(struct device *, struct cfdata *, void *);
static void cgthreeattach_sbus(struct device *, struct device *, void *);
static void cgthreeattach_obio(struct device *, struct device *, void *);
static void cgthreeunblank(struct device *);
static void cgthreeattach __P((struct cgthree_softc *, char *, int, int));
/* cdevsw prototypes */
cdev_decl(cgthree);
struct cfattach cgthree_sbus_ca = {
sizeof(struct cgthree_softc), cgthreematch_sbus, cgthreeattach_sbus
};
struct cfattach cgthree_obio_ca = {
sizeof(struct cgthree_softc), cgthreematch_obio, cgthreeattach_obio
};
extern struct cfdriver cgthree_cd;
/* frame buffer generic driver */
static struct fbdriver cgthreefbdriver = {
cgthreeunblank, cgthreeopen, cgthreeclose, cgthreeioctl, cgthreepoll,
cgthreemmap
};
extern int fbnode;
extern struct tty *fbconstty;
static void cgthreeloadcmap __P((struct cgthree_softc *, int, int));
static void cgthree_set_video __P((struct cgthree_softc *, int));
static int cgthree_get_video __P((struct cgthree_softc *));
/* Video control parameters */
struct cg3_videoctrl {
unsigned char sense; /* Monitor sense value */
unsigned char vctrl[12];
} cg3_videoctrl[] = {
/* Missing entries: sense 0x10, 0x30, 0x50 */
{ 0x40, /* this happens to be my 19'' 1152x900 gray-scale monitor */
{0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1}
},
{ 0x00, /* default? must be last */
{0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1}
}
};
/*
* Match a cgthree.
*/
int
cgthreematch_sbus(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
int
cgthreematch_obio(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
if (uoba->uoba_isobio4 == 0)
return (strcmp(cf->cf_driver->cd_name, uoba->uoba_sbus.sa_name) == 0);
oba = &uoba->uoba_oba4;
return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr,
4, /* probe size */
0, /* offset */
0, /* flags */
NULL, NULL));
}
/*
* Attach a display. We need to notice if it is the console, too.
*/
void
cgthreeattach_sbus(parent, self, args)
struct device *parent, *self;
void *args;
{
struct cgthree_softc *sc = (struct cgthree_softc *)self;
struct sbus_attach_args *sa = args;
struct fbdevice *fb = &sc->sc_fb;
int node = sa->sa_node;
int isconsole;
char *name;
bus_space_handle_t bh;
/* Remember cookies for cgthree_mmap() */
sc->sc_bustag = sa->sa_bustag;
sc->sc_btype = (bus_type_t)sa->sa_slot;
sc->sc_paddr = (bus_addr_t)sa->sa_offset;
fb->fb_driver = &cgthreefbdriver;
fb->fb_device = &sc->sc_dev;
fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK;
fb->fb_type.fb_type = FBTYPE_SUN3COLOR;
fb->fb_type.fb_depth = 8;
fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node);
/*
* When the ROM has mapped in a cgthree display, the address
* maps only the video RAM, so in any case we have to map the
* registers ourselves. We only need the video RAM if we are
* going to print characters via rconsole.
*/
if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
sa->sa_offset + CG3REG_REG,
sizeof(struct fbcontrol),
BUS_SPACE_MAP_LINEAR,
0,
&bh) != 0) {
printf("%s: cannot map control registers\n", self->dv_xname);
return;
}
sc->sc_fbc = (struct fbcontrol *)bh;
isconsole = node == fbnode && fbconstty != NULL;
name = getpropstring(node, "model");
fb->fb_pixels = sa->sa_promvaddr;
if (isconsole && fb->fb_pixels == NULL) {
int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
sa->sa_offset + CG3REG_MEM,
ramsize,
BUS_SPACE_MAP_LINEAR,
0,
&bh) != 0) {
printf("%s: cannot map pixels\n", self->dv_xname);
return;
}
sc->sc_fb.fb_pixels = (char *)bh;
}
sbus_establish(&sc->sc_sd, &sc->sc_dev);
cgthreeattach(sc, name, isconsole, node == fbnode);
}
void
cgthreeattach_obio(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cgthree_softc *sc = (struct cgthree_softc *)self;
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
struct fbdevice *fb = &sc->sc_fb;
int isconsole;
char *name;
bus_space_handle_t bh;
if (uoba->uoba_isobio4 == 0) {
cgthreeattach_sbus(parent, self, aux);
return;
}
oba = &uoba->uoba_oba4;
/* Remember cookies for cgthree_mmap() */
sc->sc_bustag = oba->oba_bustag;
sc->sc_btype = (bus_type_t)0;
sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
fb->fb_driver = &cgthreefbdriver;
fb->fb_device = &sc->sc_dev;
fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK;
fb->fb_type.fb_type = FBTYPE_SUN3COLOR;
fb->fb_type.fb_depth = 8;
fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
if (obio_bus_map(oba->oba_bustag, oba->oba_paddr,
CG3REG_REG,
sizeof(struct fbcontrol),
BUS_SPACE_MAP_LINEAR,
0,
&bh) != 0) {
printf("%s: cannot map control registers\n", self->dv_xname);
return;
}
sc->sc_fbc = (struct fbcontrol *)bh;
isconsole = fbconstty != NULL;
name = "cgthree";
if (isconsole) {
int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
if (obio_bus_map(oba->oba_bustag, oba->oba_paddr,
CG3REG_MEM,
ramsize,
BUS_SPACE_MAP_LINEAR,
0,
&bh) != 0) {
printf("%s: cannot map pixels\n", self->dv_xname);
return;
}
sc->sc_fb.fb_pixels = (char *)bh;
}
cgthreeattach(sc, name, isconsole, 1);
}
void
cgthreeattach(sc, name, isconsole, isfb)
struct cgthree_softc *sc;
char *name;
int isconsole;
int isfb;
{
int i;
struct fbdevice *fb = &sc->sc_fb;
volatile struct bt_regs *bt;
fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes;
printf(": %s, %d x %d", name,
fb->fb_type.fb_width, fb->fb_type.fb_height);
/* Transfer video magic to board, if it's not running */
if ((sc->sc_fbc->fbc_ctrl & FBC_TIMING) == 0)
for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]);
i++) {
volatile struct fbcontrol *fbc = sc->sc_fbc;
if ((fbc->fbc_status & FBS_MSENSE) ==
cg3_videoctrl[i].sense) {
int j;
printf(" setting video ctrl");
for (j = 0; j < 12; j++)
fbc->fbc_vcontrol[j] =
cg3_videoctrl[i].vctrl[j];
fbc->fbc_ctrl |= FBC_TIMING;
break;
}
}
/* grab initial (current) color map */
fb->fb_type.fb_cmsize = 256;
bt = &sc->sc_fbc->fbc_dac;
bt->bt_addr = 0;
for (i = 0; i < 256 * 3 / 4; i++)
sc->sc_cmap.cm_chip[i] = bt->bt_cmap;
/* make sure we are not blanked */
cgthree_set_video(sc, 1);
BT_INIT(bt, 0);
if (isconsole) {
printf(" (console)\n");
#ifdef RASTERCONSOLE
fbrcons_init(fb);
#endif
} else
printf("\n");
if (isfb)
fb_attach(fb, isconsole);
}
int
cgthreeopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = minor(dev);
if (unit >= cgthree_cd.cd_ndevs || cgthree_cd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
cgthreeclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (0);
}
int
cgthreeioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct cgthree_softc *sc = cgthree_cd.cd_devs[minor(dev)];
struct fbgattr *fba;
int error;
switch (cmd) {
case FBIOGTYPE:
*(struct fbtype *)data = sc->sc_fb.fb_type;
break;
case FBIOGATTR:
fba = (struct fbgattr *)data;
fba->real_type = sc->sc_fb.fb_type.fb_type;
fba->owner = 0; /* XXX ??? */
fba->fbtype = sc->sc_fb.fb_type;
fba->sattr.flags = 0;
fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
fba->sattr.dev_specific[0] = -1;
fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
fba->emu_types[1] = -1;
break;
case FBIOGETCMAP:
return (bt_getcmap((struct fbcmap *)data, &sc->sc_cmap, 256));
case FBIOPUTCMAP:
/* copy to software map */
#define p ((struct fbcmap *)data)
error = bt_putcmap(p, &sc->sc_cmap, 256);
if (error)
return (error);
/* now blast them into the chip */
/* XXX should use retrace interrupt */
cgthreeloadcmap(sc, p->index, p->count);
#undef p
break;
case FBIOGVIDEO:
*(int *)data = cgthree_get_video(sc);
break;
case FBIOSVIDEO:
cgthree_set_video(sc, *(int *)data);
break;
default:
return (ENOTTY);
}
return (0);
}
int
cgthreepoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return (seltrue(dev, events, p));
}
/*
* Undo the effect of an FBIOSVIDEO that turns the video off.
*/
static void
cgthreeunblank(dev)
struct device *dev;
{
cgthree_set_video((struct cgthree_softc *)dev, 1);
}
static void
cgthree_set_video(sc, enable)
struct cgthree_softc *sc;
int enable;
{
if (enable)
sc->sc_fbc->fbc_ctrl |= FBC_VENAB;
else
sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB;
}
static int
cgthree_get_video(sc)
struct cgthree_softc *sc;
{
return ((sc->sc_fbc->fbc_ctrl & FBC_VENAB) != 0);
}
/*
* Load a subset of the current (new) colormap into the Brooktree DAC.
*/
static void
cgthreeloadcmap(sc, start, ncolors)
struct cgthree_softc *sc;
int start, ncolors;
{
volatile struct bt_regs *bt;
u_int *ip;
int count;
ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
bt = &sc->sc_fbc->fbc_dac;
bt->bt_addr = BT_D4M4(start);
while (--count >= 0)
bt->bt_cmap = *ip++;
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*
* The cg3 is mapped starting at 256KB, for pseudo-compatibility with
* the cg4 (which had an overlay plane in the first 128K and an enable
* plane in the next 128K). X11 uses only 256k+ region but tries to
* map the whole thing, so we repeatedly map the first 256K to the
* first page of the color screen. If someone tries to use the overlay
* and enable regions, they will get a surprise....
*
* As well, mapping at an offset of 0x04000000 causes the cg3 to be
* mapped in flat mode without the cg4 emulation.
*/
int
cgthreemmap(dev, off, prot)
dev_t dev;
int off, prot;
{
struct cgthree_softc *sc = cgthree_cd.cd_devs[minor(dev)];
bus_space_handle_t bh;
#define START (128*1024 + 128*1024)
#define NOOVERLAY (0x04000000)
if (off & PGOFSET)
panic("cgthreemmap");
if ((u_int)off >= NOOVERLAY)
off -= NOOVERLAY;
else if ((u_int)off >= START)
off -= START;
else
off = 0;
if ((unsigned)off >= sc->sc_fb.fb_type.fb_size)
return (-1);
if (bus_space_mmap(sc->sc_bustag,
sc->sc_btype,
sc->sc_paddr + CG3REG_MEM + off,
BUS_SPACE_MAP_LINEAR, &bh))
return (-1);
return ((int)bh);
}