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NetBSD/sys/dev/sun/cgsix.c

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/* $NetBSD: cgsix.c,v 1.4 2000/11/05 22:59:27 chs 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) 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.
*
* @(#)cgsix.c 8.4 (Berkeley) 1/21/94
*/
/*
* color display (cgsix) 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>
#ifdef DEBUG
#include <sys/proc.h>
#include <sys/syslog.h>
#endif
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include <dev/sun/btreg.h>
#include <dev/sun/btvar.h>
#include <dev/sun/cgsixreg.h>
#include <dev/sun/cgsixvar.h>
#include <dev/sun/pfourreg.h>
#ifdef RASTERCONSOLE
#include <dev/rasops/rasops.h>
#include <dev/wscons/wsconsio.h>
#endif
#include <machine/conf.h>
static void cg6_unblank(struct device *);
/* cdevsw prototypes */
cdev_decl(cgsix);
extern struct cfdriver cgsix_cd;
/* frame buffer generic driver */
static struct fbdriver cg6_fbdriver = {
cg6_unblank, cgsixopen, cgsixclose, cgsixioctl, cgsixpoll, cgsixmmap
};
static void cg6_reset (struct cgsix_softc *);
static void cg6_loadcmap (struct cgsix_softc *, int, int);
static void cg6_loadomap (struct cgsix_softc *);
static void cg6_setcursor (struct cgsix_softc *);/* set position */
static void cg6_loadcursor (struct cgsix_softc *);/* set shape */
#ifdef RASTERCONSOLE
int cgsix_use_rasterconsole = 1;
/*
* cg6 accelerated console routines.
*
* Note that buried in this code in several places is the assumption
* that pixels are exactly one byte wide. Since this is cg6-specific
* code, this seems safe. This assumption resides in things like the
* use of ri_emuwidth without messing around with ri_pelbytes, or the
* assumption that ri_font->fontwidth is the right thing to multiply
* character-cell counts by to get byte counts.
*/
/*
* Magic values for blitter
*/
/* Value for the alu register for screen-to-screen copies */
#define CG6_ALU_COPY ( \
0x80000000 /* GX_PLANE_ONES (ignore planemask register) */ \
| 0x20000000 /* GX_PIXEL_ONES (ignore pixelmask register) */ \
| 0x00800000 /* GX_ATTR_SUPP (function unknown) */ \
| 0x00000000 /* GX_RAST_BOOL (function unknown) */ \
| 0x00000000 /* GX_PLOT_PLOT (function unknown) */ \
| 0x08000000 /* GX_PATTERN_ONES (ignore pattern) */ \
| 0x01000000 /* GX_POLYG_OVERLAP (unsure - handle overlap?) */ \
| 0x0000cccc /* ALU = src */ \
)
/* Value for the alu register for region fills */
#define CG6_ALU_FILL ( \
0x80000000 /* GX_PLANE_ONES (ignore planemask register) */ \
| 0x20000000 /* GX_PIXEL_ONES (ignore pixelmask register) */ \
| 0x00800000 /* GX_ATTR_SUPP (function unknown) */ \
| 0x00000000 /* GX_RAST_BOOL (function unknown) */ \
| 0x00000000 /* GX_PLOT_PLOT (function unknown) */ \
| 0x08000000 /* GX_PATTERN_ONES (ignore pattern) */ \
| 0x01000000 /* GX_POLYG_OVERLAP (unsure - handle overlap?) */ \
| 0x0000ff00 /* ALU = fg color */ \
)
/* Value for the alu register for toggling an area */
#define CG6_ALU_FLIP ( \
0x80000000 /* GX_PLANE_ONES (ignore planemask register) */ \
| 0x20000000 /* GX_PIXEL_ONES (ignore pixelmask register) */ \
| 0x00800000 /* GX_ATTR_SUPP (function unknown) */ \
| 0x00000000 /* GX_RAST_BOOL (function unknown) */ \
| 0x00000000 /* GX_PLOT_PLOT (function unknown) */ \
| 0x08000000 /* GX_PATTERN_ONES (ignore pattern) */ \
| 0x01000000 /* GX_POLYG_OVERLAP (unsure - handle overlap?) */ \
| 0x00005555 /* ALU = ~dst */ \
)
/*
* Wait for a blit to finish.
* 0x8000000 bit: function unknown; 0x20000000 bit: GX_BLT_INPROGRESS
*/
#define CG6_BLIT_WAIT(fbc) do { \
while (((fbc)->fbc_blit & 0xa0000000) == 0xa0000000) \
/*EMPTY*/; \
} while (0)
/*
* Wait for a drawing operation to finish, or at least get queued.
* 0x8000000 bit: function unknown; 0x20000000 bit: GX_FULL
*/
#define CG6_DRAW_WAIT(fbc) do { \
while (((fbc)->fbc_draw & 0xa0000000) == 0xa0000000) \
/*EMPTY*/; \
} while (0)
/*
* Wait for the whole engine to go idle. This may not matter in our case;
* I'm not sure whether blits are actually queued or not. It more likely
* is intended for lines and such that do get queued.
* 0x10000000 bit: GX_INPROGRESS
*/
#define CG6_DRAIN(fbc) do { \
while ((fbc)->fbc_s & 0x10000000) \
/*EMPTY*/; \
} while (0)
static void
cg6_ras_copyrows(void *cookie, int src, int dst, int n)
{
struct rasops_info *ri;
volatile struct cg6_fbc *fbc;
ri = cookie;
if (dst == src)
return;
if (src < 0) {
n += src;
src = 0;
}
if (src+n > ri->ri_rows)
n = ri->ri_rows - src;
if (dst < 0) {
n += dst;
dst = 0;
}
if (dst+n > ri->ri_rows)
n = ri->ri_rows - dst;
if (n <= 0)
return;
n *= ri->ri_font->fontheight;
src *= ri->ri_font->fontheight;
dst *= ri->ri_font->fontheight;
fbc = ((struct cgsix_softc *)ri->ri_hw)->sc_fbc;
fbc->fbc_clip = 0;
fbc->fbc_s = 0;
fbc->fbc_offx = 0;
fbc->fbc_offy = 0;
fbc->fbc_clipminx = 0;
fbc->fbc_clipminy = 0;
fbc->fbc_clipmaxx = ri->ri_width - 1;
fbc->fbc_clipmaxy = ri->ri_height - 1;
fbc->fbc_alu = CG6_ALU_COPY;
fbc->fbc_x0 = ri->ri_xorigin;
fbc->fbc_y0 = ri->ri_yorigin + src;
fbc->fbc_x1 = ri->ri_xorigin + ri->ri_emuwidth - 1;
fbc->fbc_y1 = ri->ri_yorigin + src + n - 1;
fbc->fbc_x2 = ri->ri_xorigin;
fbc->fbc_y2 = ri->ri_yorigin + dst;
fbc->fbc_x3 = ri->ri_xorigin + ri->ri_emuwidth - 1;
fbc->fbc_y3 = ri->ri_yorigin + dst + n - 1;
CG6_BLIT_WAIT(fbc);
CG6_DRAIN(fbc);
}
static void
cg6_ras_copycols(void *cookie, int row, int src, int dst, int n)
{
struct rasops_info *ri;
volatile struct cg6_fbc *fbc;
ri = cookie;
if (dst == src)
return;
if ((row < 0) || (row >= ri->ri_rows))
return;
if (src < 0) {
n += src;
src = 0;
}
if (src+n > ri->ri_cols)
n = ri->ri_cols - src;
if (dst < 0) {
n += dst;
dst = 0;
}
if (dst+n > ri->ri_cols)
n = ri->ri_cols - dst;
if (n <= 0)
return;
n *= ri->ri_font->fontwidth;
src *= ri->ri_font->fontwidth;
dst *= ri->ri_font->fontwidth;
row *= ri->ri_font->fontheight;
fbc = ((struct cgsix_softc *)ri->ri_hw)->sc_fbc;
fbc->fbc_clip = 0;
fbc->fbc_s = 0;
fbc->fbc_offx = 0;
fbc->fbc_offy = 0;
fbc->fbc_clipminx = 0;
fbc->fbc_clipminy = 0;
fbc->fbc_clipmaxx = ri->ri_width - 1;
fbc->fbc_clipmaxy = ri->ri_height - 1;
fbc->fbc_alu = CG6_ALU_COPY;
fbc->fbc_x0 = ri->ri_xorigin + src;
fbc->fbc_y0 = ri->ri_yorigin + row;
fbc->fbc_x1 = ri->ri_xorigin + src + n - 1;
fbc->fbc_y1 = ri->ri_yorigin + row + ri->ri_font->fontheight - 1;
fbc->fbc_x2 = ri->ri_xorigin + dst;
fbc->fbc_y2 = ri->ri_yorigin + row;
fbc->fbc_x3 = ri->ri_xorigin + dst + n - 1;
fbc->fbc_y3 = ri->ri_yorigin + row + ri->ri_font->fontheight - 1;
CG6_BLIT_WAIT(fbc);
CG6_DRAIN(fbc);
}
static void
cg6_ras_erasecols(void *cookie, int row, int col, int n, long int attr)
{
struct rasops_info *ri;
volatile struct cg6_fbc *fbc;
ri = cookie;
if ((row < 0) || (row >= ri->ri_rows))
return;
if (col < 0) {
n += col;
col = 0;
}
if (col+n > ri->ri_cols)
n = ri->ri_cols - col;
if (n <= 0)
return;
n *= ri->ri_font->fontwidth;
col *= ri->ri_font->fontwidth;
row *= ri->ri_font->fontheight;
fbc = ((struct cgsix_softc *)ri->ri_hw)->sc_fbc;
fbc->fbc_clip = 0;
fbc->fbc_s = 0;
fbc->fbc_offx = 0;
fbc->fbc_offy = 0;
fbc->fbc_clipminx = 0;
fbc->fbc_clipminy = 0;
fbc->fbc_clipmaxx = ri->ri_width - 1;
fbc->fbc_clipmaxy = ri->ri_height - 1;
fbc->fbc_alu = CG6_ALU_FILL;
fbc->fbc_fg = ri->ri_devcmap[(attr >> 16) & 0xf];
fbc->fbc_arecty = ri->ri_yorigin + row;
fbc->fbc_arectx = ri->ri_xorigin + col;
fbc->fbc_arecty = ri->ri_yorigin + row + ri->ri_font->fontheight - 1;
fbc->fbc_arectx = ri->ri_xorigin + col + n - 1;
CG6_DRAW_WAIT(fbc);
CG6_DRAIN(fbc);
}
static void
cg6_ras_eraserows(void *cookie, int row, int n, long int attr)
{
struct rasops_info *ri;
volatile struct cg6_fbc *fbc;
ri = cookie;
if (row < 0) {
n += row;
row = 0;
}
if (row+n > ri->ri_rows)
n = ri->ri_rows - row;
if (n <= 0)
return;
fbc = ((struct cgsix_softc *)ri->ri_hw)->sc_fbc;
fbc->fbc_clip = 0;
fbc->fbc_s = 0;
fbc->fbc_offx = 0;
fbc->fbc_offy = 0;
fbc->fbc_clipminx = 0;
fbc->fbc_clipminy = 0;
fbc->fbc_clipmaxx = ri->ri_width - 1;
fbc->fbc_clipmaxy = ri->ri_height - 1;
fbc->fbc_alu = CG6_ALU_FILL;
fbc->fbc_fg = ri->ri_devcmap[(attr >> 16) & 0xf];
if ((n == ri->ri_rows) && (ri->ri_flg & RI_FULLCLEAR)) {
fbc->fbc_arecty = 0;
fbc->fbc_arectx = 0;
fbc->fbc_arecty = ri->ri_height - 1;
fbc->fbc_arectx = ri->ri_width - 1;
} else {
row *= ri->ri_font->fontheight;
fbc->fbc_arecty = ri->ri_yorigin + row;
fbc->fbc_arectx = ri->ri_xorigin;
fbc->fbc_arecty = ri->ri_yorigin + row + (n * ri->ri_font->fontheight) - 1;
fbc->fbc_arectx = ri->ri_xorigin + ri->ri_emuwidth - 1;
}
CG6_DRAW_WAIT(fbc);
CG6_DRAIN(fbc);
}
/*
* Really want something more like fg^bg here, but that would be more
* or less impossible to migrate to colors. So we hope there's
* something not too inappropriate in the colormap...besides, it's what
* the non-accelerated code did. :-)
*/
static void
cg6_ras_do_cursor(struct rasops_info *ri)
{
volatile struct cg6_fbc *fbc;
int row;
int col;
row = ri->ri_crow * ri->ri_font->fontheight;
col = ri->ri_ccol * ri->ri_font->fontwidth;
fbc = ((struct cgsix_softc *)ri->ri_hw)->sc_fbc;
fbc->fbc_clip = 0;
fbc->fbc_s = 0;
fbc->fbc_offx = 0;
fbc->fbc_offy = 0;
fbc->fbc_clipminx = 0;
fbc->fbc_clipminy = 0;
fbc->fbc_clipmaxx = ri->ri_width - 1;
fbc->fbc_clipmaxy = ri->ri_height - 1;
fbc->fbc_alu = CG6_ALU_FLIP;
fbc->fbc_arecty = ri->ri_yorigin + row;
fbc->fbc_arectx = ri->ri_xorigin + col;
fbc->fbc_arecty = ri->ri_yorigin + row + ri->ri_font->fontheight - 1;
fbc->fbc_arectx = ri->ri_xorigin + col + ri->ri_font->fontwidth - 1;
CG6_DRAW_WAIT(fbc);
CG6_DRAIN(fbc);
}
#endif /* RASTERCONSOLE */
void
cg6attach(sc, name, isconsole)
struct cgsix_softc *sc;
char *name;
int isconsole;
{
struct fbdevice *fb = &sc->sc_fb;
fb->fb_driver = &cg6_fbdriver;
/* Don't have to map the pfour register on the cgsix. */
fb->fb_pfour = NULL;
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);
sc->sc_fhcrev = (*sc->sc_fhc >> FHC_REV_SHIFT) &
(FHC_REV_MASK >> FHC_REV_SHIFT);
printf(", rev %d", sc->sc_fhcrev);
/* reset cursor & frame buffer controls */
cg6_reset(sc);
/* enable video */
sc->sc_thc->thc_misc |= THC_MISC_VIDEN;
if (isconsole) {
printf(" (console)");
#ifdef RASTERCONSOLE
if (cgsix_use_rasterconsole) {
fbrcons_init(&sc->sc_fb);
sc->sc_fb.fb_rinfo.ri_hw = sc;
sc->sc_fb.fb_rinfo.ri_ops.copyrows = cg6_ras_copyrows;
sc->sc_fb.fb_rinfo.ri_ops.copycols = cg6_ras_copycols;
sc->sc_fb.fb_rinfo.ri_ops.erasecols = cg6_ras_erasecols;
sc->sc_fb.fb_rinfo.ri_ops.eraserows = cg6_ras_eraserows;
sc->sc_fb.fb_rinfo.ri_do_cursor = cg6_ras_do_cursor;
}
#endif
}
printf("\n");
fb_attach(&sc->sc_fb, isconsole);
}
int
cgsixopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = minor(dev);
if (unit >= cgsix_cd.cd_ndevs || cgsix_cd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
cgsixclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
struct cgsix_softc *sc = cgsix_cd.cd_devs[minor(dev)];
cg6_reset(sc);
/* (re-)initialize the default color map */
bt_initcmap(&sc->sc_cmap, 256);
cg6_loadcmap(sc, 0, 256);
return (0);
}
int
cgsixioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct cgsix_softc *sc = cgsix_cd.cd_devs[minor(dev)];
u_int count;
int v, error;
union cursor_cmap tcm;
switch (cmd) {
case FBIOGTYPE:
*(struct fbtype *)data = sc->sc_fb.fb_type;
break;
case FBIOGATTR:
#define 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;
#undef fba
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 */
cg6_loadcmap(sc, p->index, p->count);
#undef p
break;
case FBIOGVIDEO:
*(int *)data = sc->sc_blanked;
break;
case FBIOSVIDEO:
if (*(int *)data)
cg6_unblank(&sc->sc_dev);
else if (!sc->sc_blanked) {
sc->sc_blanked = 1;
sc->sc_thc->thc_misc &= ~THC_MISC_VIDEN;
}
break;
/* these are for both FBIOSCURSOR and FBIOGCURSOR */
#define p ((struct fbcursor *)data)
#define cc (&sc->sc_cursor)
case FBIOGCURSOR:
/* do not quite want everything here... */
p->set = FB_CUR_SETALL; /* close enough, anyway */
p->enable = cc->cc_enable;
p->pos = cc->cc_pos;
p->hot = cc->cc_hot;
p->size = cc->cc_size;
/* begin ugh ... can we lose some of this crap?? */
if (p->image != NULL) {
count = cc->cc_size.y * 32 / NBBY;
error = copyout((caddr_t)cc->cc_bits[1],
(caddr_t)p->image, count);
if (error)
return (error);
error = copyout((caddr_t)cc->cc_bits[0],
(caddr_t)p->mask, count);
if (error)
return (error);
}
if (p->cmap.red != NULL) {
error = bt_getcmap(&p->cmap,
(union bt_cmap *)&cc->cc_color, 2, 1);
if (error)
return (error);
} else {
p->cmap.index = 0;
p->cmap.count = 2;
}
/* end ugh */
break;
case FBIOSCURSOR:
/*
* For setcmap and setshape, verify parameters, so that
* we do not get halfway through an update and then crap
* out with the software state screwed up.
*/
v = p->set;
if (v & FB_CUR_SETCMAP) {
/*
* This use of a temporary copy of the cursor
* colormap is not terribly efficient, but these
* copies are small (8 bytes)...
*/
tcm = cc->cc_color;
error = bt_putcmap(&p->cmap, (union bt_cmap *)&tcm, 2, 1);
if (error)
return (error);
}
if (v & FB_CUR_SETSHAPE) {
if ((u_int)p->size.x > 32 || (u_int)p->size.y > 32)
return (EINVAL);
count = p->size.y * 32 / NBBY;
if (!uvm_useracc(p->image, count, B_READ) ||
!uvm_useracc(p->mask, count, B_READ))
return (EFAULT);
}
/* parameters are OK; do it */
if (v & (FB_CUR_SETCUR | FB_CUR_SETPOS | FB_CUR_SETHOT)) {
if (v & FB_CUR_SETCUR)
cc->cc_enable = p->enable;
if (v & FB_CUR_SETPOS)
cc->cc_pos = p->pos;
if (v & FB_CUR_SETHOT)
cc->cc_hot = p->hot;
cg6_setcursor(sc);
}
if (v & FB_CUR_SETCMAP) {
cc->cc_color = tcm;
cg6_loadomap(sc); /* XXX defer to vertical retrace */
}
if (v & FB_CUR_SETSHAPE) {
cc->cc_size = p->size;
count = p->size.y * 32 / NBBY;
bzero((caddr_t)cc->cc_bits, sizeof cc->cc_bits);
copyin(p->mask, (caddr_t)cc->cc_bits[0], count);
copyin(p->image, (caddr_t)cc->cc_bits[1], count);
cg6_loadcursor(sc);
}
break;
#undef p
#undef cc
case FBIOGCURPOS:
*(struct fbcurpos *)data = sc->sc_cursor.cc_pos;
break;
case FBIOSCURPOS:
sc->sc_cursor.cc_pos = *(struct fbcurpos *)data;
cg6_setcursor(sc);
break;
case FBIOGCURMAX:
/* max cursor size is 32x32 */
((struct fbcurpos *)data)->x = 32;
((struct fbcurpos *)data)->y = 32;
break;
default:
#ifdef DEBUG
log(LOG_NOTICE, "cgsixioctl(0x%lx) (%s[%d])\n", cmd,
p->p_comm, p->p_pid);
#endif
return (ENOTTY);
}
return (0);
}
int
cgsixpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return (seltrue(dev, events, p));
}
/*
* Clean up hardware state (e.g., after bootup or after X crashes).
*/
static void
cg6_reset(sc)
struct cgsix_softc *sc;
{
volatile struct cg6_tec_xxx *tec;
int fhc;
volatile struct bt_regs *bt;
/* hide the cursor, just in case */
sc->sc_thc->thc_cursxy = (THC_CURSOFF << 16) | THC_CURSOFF;
/* turn off frobs in transform engine (makes X11 work) */
tec = sc->sc_tec;
tec->tec_mv = 0;
tec->tec_clip = 0;
tec->tec_vdc = 0;
/* take care of hardware bugs in old revisions */
if (sc->sc_fhcrev < 5) {
/*
* Keep current resolution; set cpu to 68020, set test
* window (size 1Kx1K), and for rev 1, disable dest cache.
*/
fhc = (*sc->sc_fhc & FHC_RES_MASK) | FHC_CPU_68020 |
FHC_TEST |
(11 << FHC_TESTX_SHIFT) | (11 << FHC_TESTY_SHIFT);
if (sc->sc_fhcrev < 2)
fhc |= FHC_DST_DISABLE;
*sc->sc_fhc = fhc;
}
/* Enable cursor in Brooktree DAC. */
bt = sc->sc_bt;
bt->bt_addr = 0x06 << 24;
bt->bt_ctrl |= 0x03 << 24;
}
static void
cg6_setcursor(sc)
struct cgsix_softc *sc;
{
/* we need to subtract the hot-spot value here */
#define COORD(f) (sc->sc_cursor.cc_pos.f - sc->sc_cursor.cc_hot.f)
sc->sc_thc->thc_cursxy = sc->sc_cursor.cc_enable ?
((COORD(x) << 16) | (COORD(y) & 0xffff)) :
(THC_CURSOFF << 16) | THC_CURSOFF;
#undef COORD
}
static void
cg6_loadcursor(sc)
struct cgsix_softc *sc;
{
volatile struct cg6_thc *thc;
u_int edgemask, m;
int i;
/*
* Keep the top size.x bits. Here we *throw out* the top
* size.x bits from an all-one-bits word, introducing zeros in
* the top size.x bits, then invert all the bits to get what
* we really wanted as our mask. But this fails if size.x is
* 32---a sparc uses only the low 5 bits of the shift count---
* so we have to special case that.
*/
edgemask = ~0;
if (sc->sc_cursor.cc_size.x < 32)
edgemask = ~(edgemask >> sc->sc_cursor.cc_size.x);
thc = sc->sc_thc;
for (i = 0; i < 32; i++) {
m = sc->sc_cursor.cc_bits[0][i] & edgemask;
thc->thc_cursmask[i] = m;
thc->thc_cursbits[i] = m & sc->sc_cursor.cc_bits[1][i];
}
}
/*
* Load a subset of the current (new) colormap into the color DAC.
*/
static void
cg6_loadcmap(sc, start, ncolors)
struct cgsix_softc *sc;
int start, ncolors;
{
volatile struct bt_regs *bt;
u_int *ip, i;
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_bt;
bt->bt_addr = BT_D4M4(start) << 24;
while (--count >= 0) {
i = *ip++;
/* hardware that makes one want to pound boards with hammers */
bt->bt_cmap = i;
bt->bt_cmap = i << 8;
bt->bt_cmap = i << 16;
bt->bt_cmap = i << 24;
}
}
/*
* Load the cursor (overlay `foreground' and `background') colors.
*/
static void
cg6_loadomap(sc)
struct cgsix_softc *sc;
{
volatile struct bt_regs *bt;
u_int i;
bt = sc->sc_bt;
bt->bt_addr = 0x01 << 24; /* set background color */
i = sc->sc_cursor.cc_color.cm_chip[0];
bt->bt_omap = i; /* R */
bt->bt_omap = i << 8; /* G */
bt->bt_omap = i << 16; /* B */
bt->bt_addr = 0x03 << 24; /* set foreground color */
bt->bt_omap = i << 24; /* R */
i = sc->sc_cursor.cc_color.cm_chip[1];
bt->bt_omap = i; /* G */
bt->bt_omap = i << 8; /* B */
}
static void
cg6_unblank(dev)
struct device *dev;
{
struct cgsix_softc *sc = (struct cgsix_softc *)dev;
if (sc->sc_blanked) {
sc->sc_blanked = 0;
sc->sc_thc->thc_misc |= THC_MISC_VIDEN;
}
}
/* XXX the following should be moved to a "user interface" header */
/*
* Base addresses at which users can mmap() the various pieces of a cg6.
* Note that although the Brooktree color registers do not occupy 8K,
* the X server dies if we do not allow it to map 8K there (it just maps
* from 0x70000000 forwards, as a contiguous chunk).
*/
#define CG6_USER_FBC 0x70000000
#define CG6_USER_TEC 0x70001000
#define CG6_USER_BTREGS 0x70002000
#define CG6_USER_FHC 0x70004000
#define CG6_USER_THC 0x70005000
#define CG6_USER_ROM 0x70006000
#define CG6_USER_RAM 0x70016000
#define CG6_USER_DHC 0x80000000
struct mmo {
u_long mo_uaddr; /* user (virtual) address */
u_long mo_size; /* size, or 0 for video ram size */
u_long mo_physoff; /* offset from sc_physadr */
};
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*
* XXX needs testing against `demanding' applications (e.g., aviator)
*/
paddr_t
cgsixmmap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
struct cgsix_softc *sc = cgsix_cd.cd_devs[minor(dev)];
struct mmo *mo;
u_int u, sz;
static struct mmo mmo[] = {
{ CG6_USER_RAM, 0, CGSIX_RAM_OFFSET },
/* do not actually know how big most of these are! */
{ CG6_USER_FBC, 1, CGSIX_FBC_OFFSET },
{ CG6_USER_TEC, 1, CGSIX_TEC_OFFSET },
{ CG6_USER_BTREGS, 8192 /* XXX */, CGSIX_BT_OFFSET },
{ CG6_USER_FHC, 1, CGSIX_FHC_OFFSET },
{ CG6_USER_THC, sizeof(struct cg6_thc), CGSIX_THC_OFFSET },
{ CG6_USER_ROM, 65536, CGSIX_ROM_OFFSET },
{ CG6_USER_DHC, 1, CGSIX_DHC_OFFSET },
};
#define NMMO (sizeof mmo / sizeof *mmo)
if (off & PGOFSET)
panic("cgsixmmap");
/*
* Entries with size 0 map video RAM (i.e., the size in fb data).
*
* Since we work in pages, the fact that the map offset table's
* sizes are sometimes bizarre (e.g., 1) is effectively ignored:
* one byte is as good as one page.
*/
for (mo = mmo; mo < &mmo[NMMO]; mo++) {
if ((u_long)off < mo->mo_uaddr)
continue;
u = off - mo->mo_uaddr;
sz = mo->mo_size ? mo->mo_size : sc->sc_fb.fb_type.fb_size;
if (u < sz) {
bus_space_handle_t bh;
if (bus_space_mmap(sc->sc_bustag,
sc->sc_btype,
sc->sc_paddr+u+mo->mo_physoff,
BUS_SPACE_MAP_LINEAR, &bh))
return (-1);
return ((paddr_t)bh);
}
}
#ifdef DEBUG
{
struct proc *p = curproc; /* XXX */
log(LOG_NOTICE, "cgsixmmap(0x%llx) (%s[%d])\n",
(long long)off, p->p_comm, p->p_pid);
}
#endif
return (-1); /* not a user-map offset */
}
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