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

430 lines
11 KiB
C

/* $NetBSD: cgtwo.c,v 1.34 2000/08/22 21:28:35 pk Exp $ */
/*
* 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.
*
* from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93
*/
/*
* color display (cgtwo) 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 <machine/autoconf.h>
#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include <dev/vme/vmevar.h>
#include <machine/eeprom.h>
#include <machine/conf.h>
#include <machine/cgtworeg.h>
/* per-display variables */
struct cgtwo_softc {
struct device sc_dev; /* base device */
struct fbdevice sc_fb; /* frame buffer device */
vme_addr_t sc_paddr;
vme_chipset_tag_t sc_ct;
bus_space_tag_t sc_bt;
volatile struct cg2statusreg *sc_reg; /* CG2 control registers */
volatile u_short *sc_cmap;
#define sc_redmap(sc) ((sc)->sc_cmap)
#define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE)
#define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE)
};
/* autoconfiguration driver */
static void cgtwoattach __P((struct device *, struct device *, void *));
static int cgtwomatch __P((struct device *, struct cfdata *, void *));
static void cgtwounblank __P((struct device *));
int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *));
int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *));
/* cdevsw prototypes */
cdev_decl(cgtwo);
struct cfattach cgtwo_ca = {
sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach
};
extern struct cfdriver cgtwo_cd;
/* frame buffer generic driver */
static struct fbdriver cgtwofbdriver = {
cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwopoll, cgtwommap
};
/*
* Match a cgtwo.
*/
int
cgtwomatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct vme_attach_args *va = aux;
vme_chipset_tag_t ct = va->va_vct;
vme_am_t mod;
/*
* Mask out invalid flags from the user.
*/
cf->cf_flags &= FB_USERMASK;
mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */
if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16,
0, 0)) {
return (0);
}
return (1);
}
/*
* Attach a display. We need to notice if it is the console, too.
*/
void
cgtwoattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct vme_attach_args *va = aux;
vme_chipset_tag_t ct = va->va_vct;
bus_space_tag_t bt;
bus_space_handle_t bh;
vme_am_t mod;
vme_mapresc_t resc;
struct cgtwo_softc *sc = (struct cgtwo_softc *)self;
struct fbdevice *fb = &sc->sc_fb;
struct eeprom *eep = (struct eeprom *)eeprom_va;
int isconsole = 0;
char *nam = NULL;
sc->sc_ct = ct;
fb->fb_driver = &cgtwofbdriver;
fb->fb_device = &sc->sc_dev;
fb->fb_type.fb_type = FBTYPE_SUN2COLOR;
fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags;
fb->fb_type.fb_depth = 8;
fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
fb->fb_type.fb_cmsize = 256;
fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG);
printf(": %s, %d x %d", nam,
fb->fb_type.fb_width, fb->fb_type.fb_height);
/*
* When the ROM has mapped in a cgtwo 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.
*/
sc->sc_paddr = va->r[0].offset;
mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */
if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF +
offsetof(struct cg2fb, status.reg),
sizeof(struct cg2statusreg), mod, VME_D16, 0,
&bt, &bh, &resc) != 0)
panic("cgtwo: vme_map status");
sc->sc_bt = bt;
sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */
if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF +
offsetof(struct cg2fb, redmap[0]),
3 * CG2_CMSIZE, mod, VME_D16, 0,
&bt, &bh, &resc) != 0)
panic("cgtwo: vme_map cmap");
sc->sc_cmap = (volatile u_short *)bh; /* XXX */
/*
* Assume this is the console if there's no eeprom info
* to be found.
*/
if (eep == NULL || eep->eeConsole == EE_CONS_COLOR)
isconsole = fb_is_console(0);
else
isconsole = 0;
if (isconsole) {
if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF,
CG2_PIXMAP_SIZE, mod, VME_D16, 0,
&bt, &bh, &resc) != 0)
panic("cgtwo: vme_map pixels");
fb->fb_pixels = (caddr_t)bh; /* XXX */
printf(" (console)\n");
#ifdef RASTERCONSOLE
fbrcons_init(fb);
#endif
} else
printf("\n");
fb_attach(fb, isconsole);
}
int
cgtwoopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = minor(dev);
if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
cgtwoclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (0);
}
int
cgtwoioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
register caddr_t data;
int flags;
struct proc *p;
{
register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)];
register struct fbgattr *fba;
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 cgtwogetcmap(sc, (struct fbcmap *) data);
case FBIOPUTCMAP:
return cgtwoputcmap(sc, (struct fbcmap *) data);
case FBIOGVIDEO:
*(int *)data = sc->sc_reg->video_enab;
break;
case FBIOSVIDEO:
sc->sc_reg->video_enab = (*(int*)data) & 1;
break;
default:
return (ENOTTY);
}
return (0);
}
int
cgtwopoll(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
cgtwounblank(dev)
struct device *dev;
{
struct cgtwo_softc *sc = (struct cgtwo_softc *)dev;
sc->sc_reg->video_enab = 1;
}
/*
*/
int
cgtwogetcmap(sc, cmap)
register struct cgtwo_softc *sc;
register struct fbcmap *cmap;
{
u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE];
int error, start, count, ecount;
register u_int i;
register volatile u_short *p;
start = cmap->index;
count = cmap->count;
ecount = start + count;
if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE)
return (EINVAL);
/* XXX - Wait for retrace? */
/* Copy hardware to local arrays. */
p = &sc_redmap(sc)[start];
for (i = start; i < ecount; i++)
red[i] = *p++;
p = &sc_greenmap(sc)[start];
for (i = start; i < ecount; i++)
green[i] = *p++;
p = &sc_bluemap(sc)[start];
for (i = start; i < ecount; i++)
blue[i] = *p++;
/* Copy local arrays to user space. */
if ((error = copyout(red + start, cmap->red, count)) != 0)
return (error);
if ((error = copyout(green + start, cmap->green, count)) != 0)
return (error);
if ((error = copyout(blue + start, cmap->blue, count)) != 0)
return (error);
return (0);
}
/*
*/
int
cgtwoputcmap(sc, cmap)
register struct cgtwo_softc *sc;
register struct fbcmap *cmap;
{
u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE];
int error, start, count, ecount;
register u_int i;
register volatile u_short *p;
start = cmap->index;
count = cmap->count;
ecount = start + count;
if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE)
return (EINVAL);
/* Copy from user space to local arrays. */
if ((error = copyin(cmap->red, red + start, count)) != 0)
return (error);
if ((error = copyin(cmap->green, green + start, count)) != 0)
return (error);
if ((error = copyin(cmap->blue, blue + start, count)) != 0)
return (error);
/* XXX - Wait for retrace? */
/* Copy from local arrays to hardware. */
p = &sc_redmap(sc)[start];
for (i = start; i < ecount; i++)
*p++ = red[i];
p = &sc_greenmap(sc)[start];
for (i = start; i < ecount; i++)
*p++ = green[i];
p = &sc_bluemap(sc)[start];
for (i = start; i < ecount; i++)
*p++ = blue[i];
return (0);
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*/
paddr_t
cgtwommap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)];
vme_am_t mod;
bus_space_handle_t bh;
extern int sparc_vme_mmap_cookie __P((vme_addr_t, vme_am_t,
bus_space_handle_t *));
if (off & PGOFSET)
panic("cgtwommap");
if (off >= sc->sc_fb.fb_type.fb_size)
return (-1);
/* Apparently, the pixels are in 32-bit data space */
mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */
if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0)
panic("cgtwommap");
return ((paddr_t)bh);
}