NetBSD-5.0.2/sys/dev/sun/cgthree.c
/* $NetBSD: cgthree.c,v 1.16.6.4 2009/02/26 07:42:06 snj 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.
*
* 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.
*/
/*
* color display (cgthree) driver.
*
* Does not handle interrupts, even though they can occur.
*
* XXX should defer colormap updates to vertical retrace interrupts
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cgthree.c,v 1.16.6.4 2009/02/26 07:42:06 snj Exp $");
#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 <sys/bus.h>
#include <machine/autoconf.h>
#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include <dev/sun/btreg.h>
#include <dev/sun/btvar.h>
#include <dev/sun/cgthreereg.h>
#include <dev/sun/cgthreevar.h>
#if NWSDISPLAY > 0
#include <dev/wscons/wsconsio.h>
#include <dev/wsfont/wsfont.h>
#include <dev/rasops/rasops.h>
#include "opt_wsemul.h"
#endif
static void cgthreeunblank(struct device *);
static void cgthreeloadcmap(struct cgthree_softc *, int, int);
static void cgthree_set_video(struct cgthree_softc *, int);
static int cgthree_get_video(struct cgthree_softc *);
extern struct cfdriver cgthree_cd;
dev_type_open(cgthreeopen);
dev_type_ioctl(cgthreeioctl);
dev_type_mmap(cgthreemmap);
const struct cdevsw cgthree_cdevsw = {
cgthreeopen, nullclose, noread, nowrite, cgthreeioctl,
nostop, notty, nopoll, cgthreemmap, nokqfilter
};
/* frame buffer generic driver */
static struct fbdriver cgthreefbdriver = {
cgthreeunblank, cgthreeopen, nullclose, cgthreeioctl, nopoll,
cgthreemmap, nokqfilter
};
/* 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}
}
};
#if NWSDISPLAY > 0
#ifdef RASTERCONSOLE
#error RASTERCONSOLE and wsdisplay are mutually exclusive
#endif
static void cg3_setup_palette(struct cgthree_softc *);
struct wsscreen_descr cgthree_defaultscreen = {
"std",
0, 0, /* will be filled in -- XXX shouldn't, it's global */
NULL, /* textops */
8, 16, /* font width/height */
WSSCREEN_WSCOLORS, /* capabilities */
NULL /* modecookie */
};
static int cgthree_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t cgthree_mmap(void *, void *, off_t, int);
static void cgthree_init_screen(void *, struct vcons_screen *, int, long *);
int cgthree_putcmap(struct cgthree_softc *, struct wsdisplay_cmap *);
int cgthree_getcmap(struct cgthree_softc *, struct wsdisplay_cmap *);
struct wsdisplay_accessops cgthree_accessops = {
cgthree_ioctl,
cgthree_mmap,
NULL, /* alloc_screen */
NULL, /* free_screen */
NULL, /* show_screen */
NULL, /* load_font */
NULL, /* pollc */
NULL /* scroll */
};
const struct wsscreen_descr *_cgthree_scrlist[] = {
&cgthree_defaultscreen
};
struct wsscreen_list cgthree_screenlist = {
sizeof(_cgthree_scrlist) / sizeof(struct wsscreen_descr *),
_cgthree_scrlist
};
extern const u_char rasops_cmap[768];
static struct vcons_screen cg3_console_screen;
#endif /* NWSDISPLAY > 0 */
void
cgthreeattach(sc, name, isconsole)
struct cgthree_softc *sc;
const char *name;
int isconsole;
{
int i;
struct fbdevice *fb = &sc->sc_fb;
#if NWSDISPLAY > 0
struct wsemuldisplaydev_attach_args aa;
struct rasops_info *ri = &cg3_console_screen.scr_ri;
unsigned long defattr;
#endif
volatile struct fbcontrol *fbc = sc->sc_fbc;
volatile struct bt_regs *bt = &fbc->fbc_dac;
fb->fb_driver = &cgthreefbdriver;
fb->fb_type.fb_cmsize = 256;
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 ((fbc->fbc_ctrl & FBC_TIMING) == 0) {
int sense = (fbc->fbc_status & FBS_MSENSE);
/* Search table for video timings fitting this monitor */
for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]);
i++) {
int j;
if (sense != cg3_videoctrl[i].sense)
continue;
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;
}
}
/* 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");
fb_attach(fb, isconsole);
#if NWSDISPLAY > 0
sc->sc_width = fb->fb_type.fb_width;
sc->sc_stride = fb->fb_type.fb_width;
sc->sc_height = fb->fb_type.fb_height;
/* setup rasops and so on for wsdisplay */
sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
vcons_init(&sc->vd, sc, &cgthree_defaultscreen, &cgthree_accessops);
sc->vd.init_screen = cgthree_init_screen;
if(isconsole) {
/* we mess with cg3_console_screen only once */
vcons_init_screen(&sc->vd, &cg3_console_screen, 1,
&defattr);
cg3_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
cgthree_defaultscreen.textops = &ri->ri_ops;
cgthree_defaultscreen.capabilities = ri->ri_caps;
cgthree_defaultscreen.nrows = ri->ri_rows;
cgthree_defaultscreen.ncols = ri->ri_cols;
sc->vd.active = &cg3_console_screen;
wsdisplay_cnattach(&cgthree_defaultscreen, ri, 0, 0, defattr);
} else {
/*
* we're not the console so we just clear the screen and don't
* set up any sort of text display
*/
if (cgthree_defaultscreen.textops == NULL) {
/*
* ugly, but...
* we want the console settings to win, so we only
* touch anything when we find an untouched screen
* definition. In this case we fill it from fb to
* avoid problems in case no cgthree is the console
*/
ri = &sc->sc_fb.fb_rinfo;
cgthree_defaultscreen.textops = &ri->ri_ops;
cgthree_defaultscreen.capabilities = ri->ri_caps;
cgthree_defaultscreen.nrows = ri->ri_rows;
cgthree_defaultscreen.ncols = ri->ri_cols;
}
}
/* Initialize the default color map. */
cg3_setup_palette(sc);
aa.scrdata = &cgthree_screenlist;
aa.console = isconsole;
aa.accessops = &cgthree_accessops;
aa.accesscookie = &sc->vd;
config_found(&sc->sc_dev, &aa, wsemuldisplaydevprint);
#else
/* Initialize the default color map. */
bt_initcmap(&sc->sc_cmap, 256);
cgthreeloadcmap(sc, 0, 256);
#endif
}
int
cgthreeopen(dev, flags, mode, l)
dev_t dev;
int flags, mode;
struct lwp *l;
{
int unit = minor(dev);
if (device_lookup(&cgthree_cd, unit) == NULL)
return (ENXIO);
return (0);
}
int
cgthreeioctl(dev, cmd, data, flags, l)
dev_t dev;
u_long cmd;
void *data;
int flags;
struct lwp *l;
{
struct cgthree_softc *sc = device_lookup_private(&cgthree_cd,
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:
#define p ((struct fbcmap *)data)
return (bt_getcmap(p, &sc->sc_cmap, 256, 1));
case FBIOPUTCMAP:
/* copy to software map */
error = bt_putcmap(p, &sc->sc_cmap, 256, 1);
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);
}
/*
* Undo the effect of an FBIOSVIDEO that turns the video off.
*/
static void
cgthreeunblank(dev)
struct device *dev;
{
cgthree_set_video(device_private(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.
*/
paddr_t
cgthreemmap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
struct cgthree_softc *sc = device_lookup_private(&cgthree_cd,
minor(dev));
#define START (128*1024 + 128*1024)
#define NOOVERLAY (0x04000000)
if (off & PGOFSET)
panic("cgthreemmap");
if (off < 0)
return (-1);
if ((u_int)off >= NOOVERLAY)
off -= NOOVERLAY;
else if ((u_int)off >= START)
off -= START;
else
off = 0;
if (off >= sc->sc_fb.fb_type.fb_size)
return (-1);
return (bus_space_mmap(sc->sc_bustag,
sc->sc_paddr, CG3REG_MEM + off,
prot, BUS_SPACE_MAP_LINEAR));
}
#if NWSDISPLAY > 0
static void
cg3_setup_palette(struct cgthree_softc *sc)
{
int i, j;
j = 0;
for (i = 0; i < 256; i++) {
sc->sc_cmap.cm_map[i][0] = rasops_cmap[j];
j++;
sc->sc_cmap.cm_map[i][1] = rasops_cmap[j];
j++;
sc->sc_cmap.cm_map[i][2] = rasops_cmap[j];
j++;
}
cgthreeloadcmap(sc, 0, 256);
}
int
cgthree_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
/* we'll probably need to add more stuff here */
struct vcons_data *vd = v;
struct cgthree_softc *sc = vd->cookie;
struct wsdisplay_fbinfo *wdf;
struct rasops_info *ri = &sc->sc_fb.fb_rinfo;
struct vcons_screen *ms = sc->vd.active;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_SUNTCX;
return 0;
case WSDISPLAYIO_GINFO:
wdf = (void *)data;
wdf->height = ri->ri_height;
wdf->width = ri->ri_width;
wdf->depth = ri->ri_depth;
wdf->cmsize = 256;
return 0;
case WSDISPLAYIO_GETCMAP:
return cgthree_getcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_PUTCMAP:
return cgthree_putcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_SMODE:
{
int new_mode = *(int*)data;
if (new_mode != sc->sc_mode)
{
sc->sc_mode = new_mode;
if(new_mode == WSDISPLAYIO_MODE_EMUL)
{
cg3_setup_palette(sc);
vcons_redraw_screen(ms);
}
}
}
}
return EPASSTHROUGH;
}
paddr_t
cgthree_mmap(void *v, void *vs, off_t offset, int prot)
{
/* I'm not at all sure this is the right thing to do */
return cgthreemmap(0, offset, prot); /* assume minor dev 0 for now */
}
int
cgthree_putcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm)
{
u_int index = cm->index;
u_int count = cm->count;
int error,i;
if (index >= 256 || count > 256 || index + count > 256)
return EINVAL;
for (i = 0; i < count; i++)
{
error = copyin(&cm->red[i],
&sc->sc_cmap.cm_map[index + i][0], 1);
if (error)
return error;
error = copyin(&cm->green[i],
&sc->sc_cmap.cm_map[index + i][1],
1);
if (error)
return error;
error = copyin(&cm->blue[i],
&sc->sc_cmap.cm_map[index + i][2], 1);
if (error)
return error;
}
cgthreeloadcmap(sc, index, count);
return 0;
}
int
cgthree_getcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm)
{
u_int index = cm->index;
u_int count = cm->count;
int error,i;
if (index >= 256 || count > 256 || index + count > 256)
return EINVAL;
for (i = 0; i < count; i++)
{
error = copyout(&sc->sc_cmap.cm_map[index + i][0],
&cm->red[i], 1);
if (error)
return error;
error = copyout(&sc->sc_cmap.cm_map[index + i][1],
&cm->green[i], 1);
if (error)
return error;
error = copyout(&sc->sc_cmap.cm_map[index + i][2],
&cm->blue[i], 1);
if (error)
return error;
}
return 0;
}
void
cgthree_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
struct cgthree_softc *sc = cookie;
struct rasops_info *ri = &scr->scr_ri;
ri->ri_depth = 8;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_stride;
ri->ri_flg = RI_CENTER;
ri->ri_bits = sc->sc_fb.fb_pixels;
memset(sc->sc_fb.fb_pixels, (*defattr >> 16) & 0xff,
sc->sc_stride * sc->sc_height);
rasops_init(ri, sc->sc_height/8, sc->sc_width/8);
ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);
ri->ri_hw = scr;
}
#endif /* NWSDISPLAY > 0 */