NetBSD-5.0.2/sys/arch/luna68k/dev/omrasops.c
/* $NetBSD: omrasops.c,v 1.6 2008/04/28 20:23:26 martin Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Tohru Nishimura.
*
* 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.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: omrasops.c,v 1.6 2008/04/28 20:23:26 martin Exp $");
/*
* Designed speficically for 'm68k bitorder';
* - most significant byte is stored at lower address,
* - most significant bit is displayed at left most on screen.
* Implementation relys on;
* - every memory references is done in aligned 32bit chunk,
* - font glyphs are stored in 32bit padded.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/rcons/raster.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wscons_rfont.h>
#include <dev/wscons/wsdisplayvar.h>
void rcons_init __P((struct rcons *, int, int));
/* wscons emulator operations */
static void om_cursor __P((void *, int, int, int));
static int om_mapchar __P((void *, int, unsigned int *));
static void om_putchar __P((void *, int, int, u_int, long));
static void om_copycols __P((void *, int, int, int, int));
static void om_copyrows __P((void *, int, int, int num));
static void om_erasecols __P((void *, int, int, int, long));
static void om_eraserows __P((void *, int, int, long));
static int om_allocattr __P((void *, int, int, int, long *));
struct wsdisplay_emulops omfb_emulops = {
om_cursor,
om_mapchar,
om_putchar,
om_copycols,
om_erasecols,
om_copyrows,
om_eraserows,
om_allocattr
};
#define ALL1BITS (~0U)
#define ALL0BITS (0U)
#define BLITWIDTH (32)
#define ALIGNMASK (0x1f)
#define BYTESDONE (4)
#define W(p) (*(u_int32_t *)(p))
#define R(p) (*(u_int32_t *)((uint8_t *)(p) + 0x40000))
/*
* Blit a character at the specified co-ordinates.
*/
static void
om_putchar(cookie, row, startcol, uc, attr)
void *cookie;
int row, startcol;
u_int uc;
long attr;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *p;
int scanspan, startx, height, width, align, y;
u_int32_t lmask, rmask, glyph, inverse;
u_int32_t *g;
scanspan = rap->linelongs * 4;
y = rc->rc_yorigin + rc->rc_font->height * row;
startx = rc->rc_xorigin + rc->rc_font->width * startcol;
height = rc->rc_font->height;
g = rc->rc_font->chars[uc].r->pixels;
inverse = (attr != 0) ? ALL1BITS : ALL0BITS;
p = (uint8_t *)rap->pixels + y * scanspan + ((startx / 32) * 4);
align = startx & ALIGNMASK;
width = rc->rc_font->width + align;
lmask = ALL1BITS >> align;
rmask = ALL1BITS << (-width & ALIGNMASK);
if (width <= BLITWIDTH) {
lmask &= rmask;
while (height > 0) {
glyph = *g;
glyph = (glyph >> align) ^ inverse;
W(p) = (R(p) & ~lmask) | (glyph & lmask);
p += scanspan;
g += 1;
height--;
}
}
else {
uint8_t *q = p;
u_int32_t lhalf, rhalf;
while (height > 0) {
glyph = *g;
lhalf = (glyph >> align) ^ inverse;
W(p) = (R(p) & ~lmask) | (lhalf & lmask);
p += BYTESDONE;
rhalf = (glyph << (BLITWIDTH - align)) ^ inverse;
W(p) = (rhalf & rmask) | (R(p) & ~rmask);
p = (q += scanspan);
g += 1;
height--;
}
}
}
static void
om_erasecols(cookie, row, startcol, ncols, attr)
void *cookie;
int row, startcol, ncols;
long attr;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *p;
int scanspan, startx, height, width, align, w, y;
u_int32_t lmask, rmask, fill;
scanspan = rap->linelongs * 4;
y = rc->rc_yorigin + rc->rc_font->height * row;
startx = rc->rc_xorigin + rc->rc_font->width * startcol;
height = rc->rc_font->height;
w = rc->rc_font->width * ncols;
fill = (attr != 0) ? ALL1BITS : ALL0BITS;
p = (uint8_t *)rap->pixels + y * scanspan + ((startx / 32) * 4);
align = startx & ALIGNMASK;
width = w + align;
lmask = ALL1BITS >> align;
rmask = ALL1BITS << (-width & ALIGNMASK);
if (width <= BLITWIDTH) {
lmask &= rmask;
fill &= lmask;
while (height > 0) {
W(p) = (R(p) & ~lmask) | fill;
p += scanspan;
height--;
}
}
else {
uint8_t *q = p;
while (height > 0) {
W(p) = (R(p) & ~lmask) | (fill & lmask);
width -= 2 * BLITWIDTH;
while (width > 0) {
p += BYTESDONE;
W(p) = fill;
width -= BLITWIDTH;
}
p += BYTESDONE;
W(p) = (fill & rmask) | (R(p) & ~rmask);
p = (q += scanspan);
width = w + align;
height--;
}
}
}
static void
om_eraserows(cookie, startrow, nrows, attr)
void *cookie;
int startrow, nrows;
long attr;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *p, *q;
int scanspan, starty, height, width, w;
u_int32_t rmask, fill;
scanspan = rap->linelongs * 4;
starty = rc->rc_yorigin + rc->rc_font->height * startrow;
height = rc->rc_font->height * nrows;
w = rc->rc_font->width * rc->rc_maxcol;
fill = (attr == 1) ? ALL1BITS : ALL0BITS;
p = (uint8_t *)rap->pixels + starty * scanspan;
p += (rc->rc_xorigin / 32) * 4;
width = w;
rmask = ALL1BITS << (-width & ALIGNMASK);
q = p;
while (height > 0) {
W(p) = fill; /* always aligned */
width -= 2 * BLITWIDTH;
while (width > 0) {
p += BYTESDONE;
W(p) = fill;
width -= BLITWIDTH;
}
p += BYTESDONE;
W(p) = (fill & rmask) | (R(p) & ~rmask);
p = (q += scanspan);
width = w;
height--;
}
}
static void
om_copyrows(cookie, srcrow, dstrow, nrows)
void *cookie;
int srcrow, dstrow, nrows;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *p, *q;
int scanspan, offset, srcy, height, width, w;
u_int32_t rmask;
scanspan = rap->linelongs * 4;
height = rc->rc_font->height * nrows;
offset = (dstrow - srcrow) * scanspan * rc->rc_font->height;
srcy = rc->rc_yorigin + rc->rc_font->height * srcrow;
if (srcrow < dstrow && srcrow + nrows > dstrow) {
scanspan = -scanspan;
srcy += height;
}
p = (uint8_t *)rap->pixels + srcy * (rap->linelongs * 4);
p += (rc->rc_xorigin / 32) * 4;
w = rc->rc_font->width * rc->rc_maxcol;
width = w;
rmask = ALL1BITS << (-width & ALIGNMASK);
q = p;
while (height > 0) {
W(p + offset) = R(p); /* always aligned */
width -= 2 * BLITWIDTH;
while (width > 0) {
p += BYTESDONE;
W(p + offset) = R(p);
width -= BLITWIDTH;
}
p += BYTESDONE;
W(p + offset) = (R(p) & rmask) | (R(p + offset) & ~rmask);
p = (q += scanspan);
width = w;
height--;
}
}
static void
om_copycols(cookie, startrow, srccol, dstcol, ncols)
void *cookie;
int startrow, srccol, dstcol, ncols;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *sp, *dp, *basep;
int scanspan, height, width, align, shift, w, y, srcx, dstx;
u_int32_t lmask, rmask;
scanspan = rap->linelongs * 4;
y = rc->rc_yorigin + rc->rc_font->height * startrow;
srcx = rc->rc_xorigin + rc->rc_font->width * srccol;
dstx = rc->rc_xorigin + rc->rc_font->width * dstcol;
height = rc->rc_font->height;
w = rc->rc_font->width * ncols;
basep = (uint8_t *)rap->pixels + y * scanspan;
align = shift = srcx & ALIGNMASK;
width = w + align;
align = dstx & ALIGNMASK;
lmask = ALL1BITS >> align;
rmask = ALL1BITS << (-(w + align) & ALIGNMASK);
shift = align - shift;
sp = basep + (srcx / 32) * 4;
dp = basep + (dstx / 32) * 4;
if (shift != 0)
goto hardluckalignment;
/* alignments comfortably match */
if (width <= BLITWIDTH) {
lmask &= rmask;
while (height > 0) {
W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
dp += scanspan;
sp += scanspan;
height--;
}
}
/* copy forward (left-to-right) */
else if (dstcol < srccol || srccol + ncols < dstcol) {
uint8_t *sq = sp, *dq = dp;
w = width;
while (height > 0) {
W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
width -= 2 * BLITWIDTH;
while (width > 0) {
sp += BYTESDONE;
dp += BYTESDONE;
W(dp) = R(sp);
width -= BLITWIDTH;
}
sp += BYTESDONE;
dp += BYTESDONE;
W(dp) = (R(sp) & rmask) | (R(dp) & ~rmask);
sp = (sq += scanspan);
dp = (dq += scanspan);
width = w;
height--;
}
}
/* copy backward (right-to-left) */
else {
uint8_t *sq, *dq;
sq = (sp += width / 32 * 4);
dq = (dp += width / 32 * 4);
w = width;
while (height > 0) {
W(dp) = (R(sp) & rmask) | (R(dp) & ~rmask);
width -= 2 * BLITWIDTH;
while (width > 0) {
sp -= BYTESDONE;
dp -= BYTESDONE;
W(dp) = R(sp);
width -= BLITWIDTH;
}
sp -= BYTESDONE;
dp -= BYTESDONE;
W(dp) = (R(dp) & ~lmask) | (R(sp) & lmask);
sp = (sq += scanspan);
dp = (dq += scanspan);
width = w;
height--;
}
}
return;
hardluckalignment:
/* alignments painfully disagree */
return;
}
/*
* Map a character.
*/
static int
om_mapchar(cookie, c, cp)
void *cookie;
int c;
u_int *cp;
{
if (c < 128) {
*cp = c;
return (5);
}
*cp = ' ';
return (0);
}
/*
* Position|{enable|disable} the cursor at the specified location.
*/
static void
om_cursor(cookie, on, row, col)
void *cookie;
int on, row, col;
{
struct rcons *rc = cookie;
struct raster *rap = rc->rc_sp;
uint8_t *p;
int scanspan, startx, height, width, align, y;
u_int32_t lmask, rmask, image;
if (!on) {
/* make sure it's on */
if ((rc->rc_bits & RC_CURSOR) == 0)
return;
row = *rc->rc_crowp;
col = *rc->rc_ccolp;
} else {
/* unpaint the old copy. */
*rc->rc_crowp = row;
*rc->rc_ccolp = col;
}
scanspan = rap->linelongs * 4;
y = rc->rc_yorigin + rc->rc_font->height * row;
startx = rc->rc_xorigin + rc->rc_font->width * col;
height = rc->rc_font->height;
p = (uint8_t *)rap->pixels + y * scanspan + ((startx / 32) * 4);
align = startx & ALIGNMASK;
width = rc->rc_font->width + align;
lmask = ALL1BITS >> align;
rmask = ALL1BITS << (-width & ALIGNMASK);
if (width <= BLITWIDTH) {
lmask &= rmask;
while (height > 0) {
image = R(p);
W(p) = (image & ~lmask) | ((image ^ ALL1BITS) & lmask);
p += scanspan;
height--;
}
}
else {
uint8_t *q = p;
while (height > 0) {
image = R(p);
W(p) = (image & ~lmask) | ((image ^ ALL1BITS) & lmask);
p += BYTESDONE;
image = R(p);
W(p) = ((image ^ ALL1BITS) & rmask) | (image & ~rmask);
p = (q += scanspan);
height--;
}
}
rc->rc_bits ^= RC_CURSOR;
}
/*
* Allocate attribute. We just pack these into an integer.
*/
static int
om_allocattr(id, fg, bg, flags, attrp)
void *id;
int fg, bg, flags;
long *attrp;
{
if (flags & (WSATTR_HILIT | WSATTR_BLINK |
WSATTR_UNDERLINE | WSATTR_WSCOLORS))
return (EINVAL);
if (flags & WSATTR_REVERSE)
*attrp = 1;
else
*attrp = 0;
return (0);
}
void
rcons_init(rc, mrow, mcol)
struct rcons *rc;
int mrow, mcol;
{
struct raster *rp = rc->rc_sp;
int i;
rc->rc_font = &gallant19; /* 12x22 monospacing font */
/* Get distance to top and bottom of font from font origin */
rc->rc_font_ascent = -(rc->rc_font->chars)['a'].homey;
i = rp->height / rc->rc_font->height;
rc->rc_maxrow = min(i, mrow);
i = rp->width / rc->rc_font->width;
rc->rc_maxcol = min(i, mcol);
/* Center emulator screen (but align x origin to 32 bits) */
rc->rc_xorigin =
((rp->width - rc->rc_maxcol * rc->rc_font->width) / 2) & ~ALIGNMASK;
rc->rc_yorigin =
(rp->height - rc->rc_maxrow * rc->rc_font->height) / 2;
#if 0
/* Raster width used for row copies */
rc->rc_raswidth = rc->rc_maxcol * rc->rc_font->width;
if (rc->rc_raswidth & ALIGNMASK) {
/* Pad to 32 bits */
i = (rc->rc_raswidth + ALIGNMASK) & ~ALIGNMASK;
/* Make sure width isn't too wide */
if (rc->rc_xorigin + i <= rp->width)
rc->rc_raswidth = i;
}
#endif
rc->rc_bits = 0;
}