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NetBSD/sys/arch/amiga/dev/amidisplaycc.c

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/* $NetBSD: amidisplaycc.c,v 1.30 2016/02/06 20:20:18 jandberg Exp $ */
/*-
* Copyright (c) 2000 Jukka Andberg.
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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>
__KERNEL_RCSID(0, "$NetBSD: amidisplaycc.c,v 1.30 2016/02/06 20:20:18 jandberg Exp $");
/*
* wscons interface to amiga custom chips. Contains the necessary functions
* to render text on bitmapped screens. Uses the functions defined in
* grfabs_reg.h for display creation/destruction and low level setup.
*
* For each virtual terminal a new screen (a grfabs view) is allocated.
* Also one more view is allocated for the mapped screen on demand.
*/
#include "amidisplaycc.h"
#include "grfcc.h"
#include "view.h"
#include "opt_amigaccgrf.h"
#include "kbd.h"
#if NAMIDISPLAYCC>0
#include <sys/param.h>
#include <sys/types.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <amiga/dev/grfabs_reg.h>
#include <amiga/dev/kbdvar.h>
#include <amiga/dev/viewioctl.h>
#include <amiga/amiga/device.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/cons.h>
#include <dev/wsfont/wsfont.h>
/* These can be lowered if you are sure you don't need that much colors. */
#define MAXDEPTH 8
#define MAXROWS 128
#define ADJUSTCOLORS
#define MAXCOLORS (1<<MAXDEPTH)
struct amidisplaycc_screen;
struct amidisplaycc_softc
{
struct amidisplaycc_screen * currentscreen;
/* display turned on? */
int ison;
/* stuff relating to the mapped screen */
view_t * gfxview;
int gfxwidth;
int gfxheight;
int gfxdepth;
int gfxon;
};
/*
* Configuration stuff.
*/
static int amidisplaycc_match(device_t, cfdata_t, void *);
static void amidisplaycc_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(amidisplaycc, sizeof(struct amidisplaycc_softc),
amidisplaycc_match, amidisplaycc_attach, NULL, NULL);
static int amidisplaycc_attached;
cons_decl(amidisplaycc_);
/* end of configuration stuff */
/* private utility functions */
static int amidisplaycc_setvideo(struct amidisplaycc_softc *, int);
static int amidisplaycc_setemulcmap(struct amidisplaycc_screen *,
struct wsdisplay_cmap *);
static int amidisplaycc_cmapioctl(view_t *, u_long, struct wsdisplay_cmap *);
static int amidisplaycc_setcmap(view_t *, struct wsdisplay_cmap *);
static int amidisplaycc_getcmap(view_t *, struct wsdisplay_cmap *);
static int amidisplaycc_gfxscreen(struct amidisplaycc_softc *, int);
static int amidisplaycc_setfont(struct amidisplaycc_screen *, const char *);
static const struct wsdisplay_font * amidisplaycc_getbuiltinfont(void);
static void dprintf(const char *fmt, ...);
/* end of private utility functions */
/* emulops for wscons */
void amidisplaycc_cursor(void *, int, int, int);
int amidisplaycc_mapchar(void *, int, unsigned int *);
void amidisplaycc_putchar(void *, int, int, u_int, long);
void amidisplaycc_copycols(void *, int, int, int, int);
void amidisplaycc_erasecols(void *, int, int, int, long);
void amidisplaycc_copyrows(void *, int, int, int);
void amidisplaycc_eraserows(void *, int, int, long);
int amidisplaycc_allocattr(void *, int, int, int, long *);
/* end of emulops for wscons */
/* accessops for wscons */
int amidisplaycc_ioctl(void *, void *, u_long, void *, int, struct lwp *);
paddr_t amidisplaycc_mmap(void *, void *, off_t, int);
int amidisplaycc_alloc_screen(void *, const struct wsscreen_descr *, void **,
int *, int *, long *);
void amidisplaycc_free_screen( void *, void *);
int amidisplaycc_show_screen(void *, void *, int, void (*)(void *, int, int),
void *);
int amidisplaycc_load_font(void *, void *, struct wsdisplay_font *);
void amidisplaycc_pollc(void *, int);
/* end of accessops for wscons */
/*
* These structures are passed to wscons, and they contain the
* display-specific callback functions.
*/
const struct wsdisplay_accessops amidisplaycc_accessops = {
amidisplaycc_ioctl,
amidisplaycc_mmap,
amidisplaycc_alloc_screen,
amidisplaycc_free_screen,
amidisplaycc_show_screen,
amidisplaycc_load_font,
amidisplaycc_pollc
};
const struct wsdisplay_emulops amidisplaycc_emulops = {
amidisplaycc_cursor,
amidisplaycc_mapchar,
amidisplaycc_putchar,
amidisplaycc_copycols,
amidisplaycc_erasecols,
amidisplaycc_copyrows,
amidisplaycc_eraserows,
amidisplaycc_allocattr
};
/* Add some of our own data to the wsscreen_descr */
struct amidisplaycc_screen_descr {
struct wsscreen_descr wsdescr;
int depth;
};
#define ADCC_SCREEN(name, width, height, depth, fontwidth, fontheight) \
/* CONSTCOND */ \
{{ \
name, \
width / fontwidth, \
height / fontheight, \
&amidisplaycc_emulops, fontwidth, fontheight, \
(depth > 1 ? WSSCREEN_WSCOLORS : 0) | WSSCREEN_REVERSE | \
WSSCREEN_HILIT | WSSCREEN_UNDERLINE }, \
depth }
/*
* List of supported screen types.
*
* The first item in list is used for the console screen.
* A suitable screen size is guessed for it by looking
* at the GRF_* options.
*/
struct amidisplaycc_screen_descr amidisplaycc_screentab[] = {
/* name, width, height, depth, fontwidth==8, fontheight */
#if defined(GRF_PAL) && !defined(GRF_NTSC)
ADCC_SCREEN("default", 640, 512, 3, 8, 8),
#else
ADCC_SCREEN("default", 640, 400, 3, 8, 8),
#endif
ADCC_SCREEN("80x50", 640, 400, 3, 8, 8),
ADCC_SCREEN("80x40", 640, 400, 3, 8, 10),
ADCC_SCREEN("80x25", 640, 400, 3, 8, 16),
ADCC_SCREEN("80x24", 640, 192, 3, 8, 8),
ADCC_SCREEN("80x64", 640, 512, 3, 8, 8),
ADCC_SCREEN("80x51", 640, 510, 3, 8, 10),
ADCC_SCREEN("80x32", 640, 512, 3, 8, 16),
ADCC_SCREEN("80x31", 640, 248, 3, 8, 8),
ADCC_SCREEN("640x400x1", 640, 400, 1, 8, 8),
ADCC_SCREEN("640x400x2", 640, 400, 2, 8, 8),
ADCC_SCREEN("640x400x3", 640, 400, 3, 8, 8),
ADCC_SCREEN("640x200x1", 640, 200, 1, 8, 8),
ADCC_SCREEN("640x200x2", 640, 200, 2, 8, 8),
ADCC_SCREEN("640x200x3", 640, 200, 3, 8, 8),
};
#define ADCC_SCREENPTR(index) &amidisplaycc_screentab[index].wsdescr
const struct wsscreen_descr *amidisplaycc_screens[] = {
ADCC_SCREENPTR(0),
ADCC_SCREENPTR(1),
ADCC_SCREENPTR(2),
ADCC_SCREENPTR(3),
ADCC_SCREENPTR(4),
ADCC_SCREENPTR(5),
ADCC_SCREENPTR(6),
ADCC_SCREENPTR(7),
ADCC_SCREENPTR(8),
ADCC_SCREENPTR(9),
ADCC_SCREENPTR(10),
ADCC_SCREENPTR(11),
ADCC_SCREENPTR(12),
ADCC_SCREENPTR(13),
ADCC_SCREENPTR(14),
};
#define NELEMS(arr) (sizeof(arr)/sizeof((arr)[0]))
/*
* This structure is passed to wscons. It contains pointers
* to the available display modes.
*/
const struct wsscreen_list amidisplaycc_screenlist = {
sizeof(amidisplaycc_screens)/sizeof(amidisplaycc_screens[0]),
amidisplaycc_screens
};
/*
* Our own screen structure. One will be created for each screen.
*/
struct amidisplaycc_screen
{
struct amidisplaycc_softc *device;
int isconsole;
int isvisible;
view_t * view;
int ncols;
int nrows;
int cursorrow;
int cursorcol;
/* Active bitplanes for each character row. */
int rowmasks[MAXROWS];
/* Mapping of colors to screen colors. */
int colormap[MAXCOLORS];
/* Copies of display parameters for convenience */
int width;
int height;
int depth;
int widthbytes; /* bytes_per_row */
int linebytes; /* widthbytes + row_mod */
int rowbytes; /* linebytes * fontheight */
u_char * planes[MAXDEPTH];
const struct wsdisplay_font * wsfont;
int wsfontcookie; /* if -1, builtin font */
int fontwidth;
int fontheight;
};
typedef struct amidisplaycc_screen adccscr_t;
/*
* Need one statically allocated screen for early init.
* The rest are mallocated when needed.
*/
adccscr_t amidisplaycc_consolescreen;
/*
* Default palettes for 2, 4 and 8 color emulation displays.
*/
/* black, grey */
static u_char pal2red[] = { 0x00, 0xaa };
static u_char pal2grn[] = { 0x00, 0xaa };
static u_char pal2blu[] = { 0x00, 0xaa };
/* black, red, green, grey */
static u_char pal4red[] = { 0x00, 0xaa, 0x00, 0xaa };
static u_char pal4grn[] = { 0x00, 0x00, 0xaa, 0xaa };
static u_char pal4blu[] = { 0x00, 0x00, 0x00, 0xaa };
/* black, red, green, brown, blue, magenta, cyan, grey */
static u_char pal8red[] = { 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0xaa};
static u_char pal8grn[] = { 0x00, 0x00, 0xaa, 0xaa, 0x00, 0x00, 0xaa, 0xaa};
static u_char pal8blu[] = { 0x00, 0x00, 0x00, 0x00, 0xaa, 0xaa, 0xaa, 0xaa};
static struct wsdisplay_cmap pal2 = { 0, 2, pal2red, pal2grn, pal2blu };
static struct wsdisplay_cmap pal4 = { 0, 4, pal4red, pal4grn, pal4blu };
static struct wsdisplay_cmap pal8 = { 0, 8, pal8red, pal8grn, pal8blu };
#ifdef GRF_AGA
extern int aga_enable;
#else
static int aga_enable = 0;
#endif
/*
* This gets called at console init to determine the priority of
* this console device.
*
* Pointers to this and other functions must present
* in constab[] in conf.c for this to work.
*/
void
amidisplaycc_cnprobe(struct consdev *cd)
{
cd->cn_pri = CN_INTERNAL;
/*
* Yeah, real nice. But if we win the console then the wscons system
* does the proper initialization.
*/
cd->cn_dev = NODEV;
}
/*
* This gets called if this device is used as the console.
*/
void
amidisplaycc_cninit(struct consdev * cd)
{
void * cookie;
long attr;
int x;
int y;
/* Yeah, we got the console! */
/*
* This will do the basic stuff we also need.
*/
grfcc_probe();
#if NVIEW>0
viewprobe();
#endif
/*
* Set up wscons to handle the details.
* It will then call us back when it needs something
* display-specific. It will also set up cn_tab properly,
* something which we failed to do at amidisplaycc_cnprobe().
*/
/*
* The alloc_screen knows to allocate the first screen statically.
*/
amidisplaycc_alloc_screen(NULL, &amidisplaycc_screentab[0].wsdescr,
&cookie, &x, &y, &attr);
wsdisplay_cnattach(&amidisplaycc_screentab[0].wsdescr,
cookie, x, y, attr);
#if NKBD>0
/* tell kbd device it is used as console keyboard */
kbd_cnattach();
#endif
}
static int
amidisplaycc_match(device_t parent, cfdata_t cf, void *aux)
{
char *name = aux;
if (matchname("amidisplaycc", name) == 0)
return (0);
/* Allow only one of us. */
if (amidisplaycc_attached)
return (0);
return 1;
}
/* ARGSUSED */
static void
amidisplaycc_attach(device_t parent, device_t self, void *aux)
{
struct wsemuldisplaydev_attach_args waa;
struct amidisplaycc_softc * adp;
amidisplaycc_attached = 1;
adp = device_private(self);
grfcc_probe();
#if NVIEW>0
viewprobe();
#endif
/*
* Attach only at real configuration time. Console init is done at
* the amidisplaycc_cninit function above.
*/
if (adp) {
printf(": Amiga custom chip graphics %s",
aga_enable ? "(AGA)" : "");
if (amidisplaycc_consolescreen.isconsole) {
adp->currentscreen = &amidisplaycc_consolescreen;
printf(" (console)");
} else
adp->currentscreen = NULL;
printf("\n");
adp->ison = 1;
/*
* Mapped screen properties.
* Would need a way to configure.
*/
adp->gfxview = NULL;
adp->gfxon = 0;
adp->gfxwidth = amidisplaycc_screentab[0].wsdescr.ncols *
amidisplaycc_screentab[0].wsdescr.fontwidth;
adp->gfxheight = amidisplaycc_screentab[0].wsdescr.nrows *
amidisplaycc_screentab[0].wsdescr.fontheight;
if (aga_enable)
adp->gfxdepth = 8;
else
adp->gfxdepth = 4;
if (NELEMS(amidisplaycc_screentab) !=
NELEMS(amidisplaycc_screens))
panic("invalid screen definitions");
waa.scrdata = &amidisplaycc_screenlist;
waa.console = amidisplaycc_consolescreen.isconsole;
waa.accessops = &amidisplaycc_accessops;
waa.accesscookie = adp;
config_found(self, &waa, wsemuldisplaydevprint);
wsfont_init();
}
}
/*
* Foreground color, background color, and style are packed into one
* long attribute. These macros are used to create/split the attribute.
*/
#define MAKEATTR(fg, bg, mode) (((fg)<<16) | ((bg)<<8) | (mode))
#define ATTRFG(attr) (((attr)>>16) & 255)
#define ATTRBG(attr) (((attr)>>8) & 255)
#define ATTRMO(attr) ((attr) & 255)
/*
* Called by wscons to draw/clear the cursor.
* We do this by xorring the block to the screen.
*
* This simple implementation will break if the screen is modified
* under the cursor before clearing it.
*/
void
amidisplaycc_cursor(void *screen, int on, int row, int col)
{
adccscr_t * scr;
u_char * dst;
int i;
scr = screen;
if (row < 0 || col < 0 || row >= scr->nrows || col >= scr->ncols)
return;
/* was off, turning off again? */
if (!on && scr->cursorrow == -1 && scr->cursorcol == -1)
return;
/* was on, and turning on again? */
if (on && scr->cursorrow >= 0 && scr->cursorcol >= 0)
{
/* clear from old location first */
amidisplaycc_cursor (screen, 0, scr->cursorrow, scr->cursorcol);
}
dst = scr->planes[0];
dst += row * scr->rowbytes;
dst += col;
if (on) {
scr->cursorrow = row;
scr->cursorcol = col;
} else {
scr->cursorrow = -1;
scr->cursorcol = -1;
}
for (i = scr->fontheight ; i > 0 ; i--) {
*dst ^= 255;
dst += scr->linebytes;
}
}
int
amidisplaycc_mapchar(void *screen, int ch, unsigned int *chp)
{
if (ch > 0 && ch < 256) {
*chp = ch;
return (5);
}
*chp = ' ';
return (0);
}
/*
* Write a character to screen with color / bgcolor / hilite(bold) /
* underline / reverse.
* Surely could be made faster but I'm not sure if its worth the
* effort as scrolling is at least a magnitude slower.
*/
void
amidisplaycc_putchar(void *screen, int row, int col, u_int ch, long attr)
{
adccscr_t * scr;
u_char * dst;
u_char * font;
int fontheight;
u_int8_t * fontreal;
int fontlow;
int fonthigh;
int bmapoffset;
int linebytes;
int underline;
int fgcolor;
int bgcolor;
int plane;
int depth;
int mode;
int bold;
u_char f;
int j;
scr = screen;
if (row < 0 || col < 0 || row >= scr->nrows || col >= scr->ncols)
return;
/* Extract the colors from the attribute */
fgcolor = ATTRFG(attr);
bgcolor = ATTRBG(attr);
mode = ATTRMO(attr);
/* Translate to screen colors */
fgcolor = scr->colormap[fgcolor];
bgcolor = scr->colormap[bgcolor];
if (mode & WSATTR_REVERSE) {
j = fgcolor;
fgcolor = bgcolor;
bgcolor = j;
}
bold = (mode & WSATTR_HILIT) > 0;
underline = (mode & WSATTR_UNDERLINE) > 0;
fontreal = scr->wsfont->data;
fontlow = scr->wsfont->firstchar;
fonthigh = fontlow + scr->wsfont->numchars - 1;
fontheight = min(scr->fontheight, scr->wsfont->fontheight);
depth = scr->depth;
linebytes = scr->linebytes;
if (ch < fontlow || ch > fonthigh)
ch = fontlow;
/* Find the location where the wanted char is in the font data */
fontreal += scr->wsfont->fontheight * (ch - fontlow);
bmapoffset = row * scr->rowbytes + col;
scr->rowmasks[row] |= fgcolor | bgcolor;
for (plane = 0 ; plane < depth ; plane++) {
dst = scr->planes[plane] + bmapoffset;
if (fgcolor & 1) {
if (bgcolor & 1) {
/* fg=on bg=on (fill) */
for (j = 0 ; j < fontheight ; j++) {
*dst = 255;
dst += linebytes;
}
} else {
/* fg=on bg=off (normal) */
font = fontreal;
for (j = 0 ; j < fontheight ; j++) {
f = *(font++);
f |= f >> bold;
*dst = f;
dst += linebytes;
}
if (underline)
*(dst - linebytes) = 255;
}
} else {
if (bgcolor & 1) {
/* fg=off bg=on (inverted) */
font = fontreal;
for (j = 0 ; j < fontheight ; j++) {
f = *(font++);
f |= f >> bold;
*dst = ~f;
dst += linebytes;
}
if (underline)
*(dst - linebytes) = 0;
} else {
/* fg=off bg=off (clear) */
for (j = 0 ; j < fontheight ; j++) {
*dst = 0;
dst += linebytes;
}
}
}
fgcolor >>= 1;
bgcolor >>= 1;
}
}
/*
* Copy characters on a row to another position on the same row.
*/
void
amidisplaycc_copycols(void *screen, int row, int srccol, int dstcol, int ncols)
{
adccscr_t * scr;
u_char * src;
u_char * dst;
int bmapoffset;
int linebytes;
int depth;
int plane;
int i;
int j;
scr = screen;
if (srccol < 0 || srccol + ncols > scr->ncols ||
dstcol < 0 || dstcol + ncols > scr->ncols ||
row < 0 || row >= scr->nrows)
return;
depth = scr->depth;
linebytes = scr->linebytes;
bmapoffset = row * scr->rowbytes;
for (plane = 0 ; plane < depth ; plane++) {
src = scr->planes[plane] + bmapoffset;
for (j = 0 ; j < scr->fontheight ; j++) {
dst = src;
if (srccol < dstcol) {
for (i = ncols - 1 ; i >= 0 ; i--)
dst[dstcol + i] = src[srccol + i];
} else {
for (i = 0 ; i < ncols ; i++)
dst[dstcol + i] = src[srccol + i];
}
src += linebytes;
}
}
}
/*
* Erase part of a row.
*/
void
amidisplaycc_erasecols(void *screen, int row, int startcol, int ncols,
long attr)
{
adccscr_t * scr;
u_char * dst;
int bmapoffset;
int linebytes;
int bgcolor;
int depth;
int plane;
int fill;
int j;
scr = screen;
if (row < 0 || row >= scr->nrows ||
startcol < 0 || startcol + ncols > scr->ncols)
return;
depth = scr->depth;
linebytes = scr->linebytes;
bmapoffset = row * scr->rowbytes + startcol;
/* Erase will be done using the set background color. */
bgcolor = ATTRBG(attr);
bgcolor = scr->colormap[bgcolor];
for(plane = 0 ; plane < depth ; plane++) {
fill = (bgcolor & 1) ? 255 : 0;
dst = scr->planes[plane] + bmapoffset;
for (j = 0 ; j < scr->fontheight ; j++) {
memset(dst, fill, ncols);
dst += linebytes;
}
}
}
/*
* Copy a number of rows to another location on the screen.
*/
void
amidisplaycc_copyrows(void *screen, int srcrow, int dstrow, int nrows)
{
adccscr_t * scr;
u_char * src;
u_char * dst;
int srcbmapoffset;
int dstbmapoffset;
int widthbytes;
int fontheight;
int linebytes;
u_int copysize;
int rowdelta;
int rowbytes;
int srcmask;
int dstmask;
int bmdelta;
int depth;
int plane;
int i;
int j;
scr = screen;
if (srcrow < 0 || srcrow + nrows > scr->nrows ||
dstrow < 0 || dstrow + nrows > scr->nrows)
return;
depth = scr->depth;
widthbytes = scr->widthbytes;
rowbytes = scr->rowbytes;
linebytes = scr->linebytes;
fontheight = scr->fontheight;
srcbmapoffset = rowbytes * srcrow;
dstbmapoffset = rowbytes * dstrow;
if (srcrow < dstrow) {
/* Move data downwards, need to copy from down to up */
bmdelta = -rowbytes;
rowdelta = -1;
srcbmapoffset += rowbytes * (nrows - 1);
srcrow += nrows - 1;
dstbmapoffset += rowbytes * (nrows - 1);
dstrow += nrows - 1;
} else {
/* Move data upwards, copy up to down */
bmdelta = rowbytes;
rowdelta = 1;
}
if (widthbytes == linebytes)
copysize = rowbytes;
else
copysize = 0;
for (j = 0 ; j < nrows ; j++) {
/* Need to copy only planes that have data on src or dst */
srcmask = scr->rowmasks[srcrow];
dstmask = scr->rowmasks[dstrow];
scr->rowmasks[dstrow] = srcmask;
for (plane = 0 ; plane < depth ; plane++) {
if (srcmask & 1) {
/*
* Source row has data on this
* plane, copy it.
*/
src = scr->planes[plane] + srcbmapoffset;
dst = scr->planes[plane] + dstbmapoffset;
if (copysize > 0) {
memcpy(dst, src, copysize);
} else {
/*
* Data not continuous,
* must do in pieces
*/
for (i=0 ; i < fontheight ; i++) {
memcpy(dst, src, widthbytes);
src += linebytes;
dst += linebytes;
}
}
} else if (dstmask & 1) {
/*
* Source plane is empty, but dest is not.
* so all we need to is clear it.
*/
dst = scr->planes[plane] + dstbmapoffset;
if (copysize > 0) {
/* Do it all */
memset(dst, 0, copysize);
} else {
for (i = 0 ; i < fontheight ; i++) {
memset(dst, 0, widthbytes);
dst += linebytes;
}
}
}
srcmask >>= 1;
dstmask >>= 1;
}
srcbmapoffset += bmdelta;
dstbmapoffset += bmdelta;
srcrow += rowdelta;
dstrow += rowdelta;
}
}
/*
* Erase some rows.
*/
void
amidisplaycc_eraserows(void *screen, int row, int nrows, long attr)
{
adccscr_t * scr;
u_char * dst;
int bmapoffset;
int fillsize;
int bgcolor;
int depth;
int plane;
int fill;
int j;
int widthbytes;
int linebytes;
int rowbytes;
scr = screen;
if (row < 0 || row + nrows > scr->nrows)
return;
depth = scr->depth;
widthbytes = scr->widthbytes;
linebytes = scr->linebytes;
rowbytes = scr->rowbytes;
bmapoffset = row * rowbytes;
if (widthbytes == linebytes)
fillsize = rowbytes * nrows;
else
fillsize = 0;
bgcolor = ATTRBG(attr);
bgcolor = scr->colormap[bgcolor];
for (j = 0 ; j < nrows ; j++)
scr->rowmasks[row+j] = bgcolor;
for (plane = 0 ; plane < depth ; plane++) {
dst = scr->planes[plane] + bmapoffset;
fill = (bgcolor & 1) ? 255 : 0;
if (fillsize > 0) {
/* If the rows are continuous, write them all. */
memset(dst, fill, fillsize);
} else {
for (j = 0 ; j < scr->fontheight * nrows ; j++) {
memset(dst, fill, widthbytes);
dst += linebytes;
}
}
bgcolor >>= 1;
}
}
/*
* Compose an attribute value from foreground color,
* background color, and flags.
*/
int
amidisplaycc_allocattr(void *screen, int fg, int bg, int flags, long *attrp)
{
adccscr_t * scr;
int maxcolor;
int newfg;
int newbg;
scr = screen;
maxcolor = (1 << scr->view->bitmap->depth) - 1;
/* Ensure the colors are displayable. */
newfg = fg & maxcolor;
newbg = bg & maxcolor;
#ifdef ADJUSTCOLORS
/*
* Hack for low-color screens, if background color is nonzero
* but would be displayed as one, adjust it.
*/
if (bg > 0 && newbg == 0)
newbg = maxcolor;
/*
* If foreground and background colors are different but would
* display the same fix them by modifying the foreground.
*/
if (fg != bg && newfg == newbg) {
if (newbg > 0)
newfg = 0;
else
newfg = maxcolor;
}
#endif
*attrp = MAKEATTR(newfg, newbg, flags);
return (0);
}
int
amidisplaycc_ioctl(void *dp, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct amidisplaycc_softc *adp;
adp = dp;
if (adp == NULL) {
printf("amidisplaycc_ioctl: adp==NULL\n");
return (EINVAL);
}
#define UINTDATA (*(u_int*)data)
#define INTDATA (*(int*)data)
#define FBINFO (*(struct wsdisplay_fbinfo*)data)
switch (cmd)
{
case WSDISPLAYIO_GTYPE:
UINTDATA = WSDISPLAY_TYPE_AMIGACC;
return (0);
case WSDISPLAYIO_SVIDEO:
dprintf("amidisplaycc: WSDISPLAYIO_SVIDEO %s\n",
UINTDATA ? "On" : "Off");
return (amidisplaycc_setvideo(adp, UINTDATA));
case WSDISPLAYIO_GVIDEO:
dprintf("amidisplaycc: WSDISPLAYIO_GVIDEO\n");
UINTDATA = adp->ison ?
WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF;
return (0);
case WSDISPLAYIO_SMODE:
if (INTDATA == WSDISPLAYIO_MODE_EMUL)
return amidisplaycc_gfxscreen(adp, 0);
if (INTDATA == WSDISPLAYIO_MODE_MAPPED)
return amidisplaycc_gfxscreen(adp, 1);
return (EINVAL);
case WSDISPLAYIO_GINFO:
FBINFO.width = adp->gfxwidth;
FBINFO.height = adp->gfxheight;
FBINFO.depth = adp->gfxdepth;
FBINFO.cmsize = 1 << FBINFO.depth;
return (0);
case WSDISPLAYIO_PUTCMAP:
case WSDISPLAYIO_GETCMAP:
return (amidisplaycc_cmapioctl(adp->gfxview,
cmd,
(struct wsdisplay_cmap*)data));
}
dprintf("amidisplaycc: unknown ioctl %lx (grp:'%c' num:%d)\n",
(long)cmd,
(char)((cmd&0xff00)>>8),
(int)(cmd&0xff));
return (EPASSTHROUGH);
#undef UINTDATA
#undef INTDATA
#undef FBINFO
}
/*
* Switch to either emulation (text) or mapped (graphics) mode
* We keep an extra screen for mapped mode so it does not
* interfere with emulation screens.
*
* Once the extra screen is created, it never goes away.
*/
static int
amidisplaycc_gfxscreen(struct amidisplaycc_softc *adp, int on)
{
dimen_t dimension;
dprintf("amidisplaycc: switching to %s mode.\n",
on ? "mapped" : "emul");
/* Current mode same as requested mode? */
if ( (on > 0) == (adp->gfxon > 0) )
return (0);
if (!on) {
/*
* Switch away from mapped mode. If there is
* a emulation screen, switch to it, otherwise
* just try to hide the mapped screen.
*/
adp->gfxon = 0;
if (adp->currentscreen)
grf_display_view(adp->currentscreen->view);
else if (adp->gfxview)
grf_remove_view(adp->gfxview);
return (0);
}
/* switch to mapped mode then */
if (adp->gfxview == NULL) {
/* First time here, create the screen */
dimension.width = adp->gfxwidth;
dimension.height = adp->gfxheight;
dprintf("amidisplaycc: preparing mapped screen %dx%dx%d\n",
dimension.width,
dimension.height,
adp->gfxdepth);
adp->gfxview = grf_alloc_view(NULL,
&dimension,
adp->gfxdepth);
}
if (adp->gfxview) {
adp->gfxon = 1;
grf_display_view(adp->gfxview);
} else {
printf("amidisplaycc: failed to make mapped screen\n");
return (ENOMEM);
}
return (0);
}
/*
* Map the graphics screen. It must have been created before
* by switching to mapped mode by using an ioctl.
*/
paddr_t
amidisplaycc_mmap(void *dp, void *vs, off_t off, int prot)
{
struct amidisplaycc_softc * adp;
bmap_t * bm;
paddr_t rv;
adp = (struct amidisplaycc_softc*)dp;
/* Check we are in mapped mode */
if (adp->gfxon == 0 || adp->gfxview == NULL) {
dprintf("amidisplaycc_mmap: Not in mapped mode\n");
return (paddr_t)(-1);
}
/*
* Screen reserved for graphics is used to avoid writing
* over the text screens.
*/
bm = adp->gfxview->bitmap;
/* Check that the offset is valid */
if (off < 0 || off >= bm->depth * bm->bytes_per_row * bm->rows) {
dprintf("amidisplaycc_mmap: Offset out of range\n");
return (paddr_t)(-1);
}
rv = (paddr_t)bm->hardware_address;
rv += off;
return MD_BTOP(rv);
}
/*
* Create a new screen.
*
* NULL dp signifies console and then memory is allocated statically
* and the screen is automatically displayed.
*
* A font with suitable size is searched and if not found
* the builtin 8x8 font is used.
*
* There are separate default palettes for 2, 4 and 8+ color
* screens.
*/
int
amidisplaycc_alloc_screen(void *dp, const struct wsscreen_descr *screenp,
void **cookiep, int *curxp, int *curyp,
long *defattrp)
{
const struct amidisplaycc_screen_descr * adccscreenp;
struct amidisplaycc_screen * scr;
struct amidisplaycc_softc * adp;
view_t * view;
dimen_t dimension;
int fontheight;
int fontwidth;
int maxcolor;
int depth;
int i;
int j;
adccscreenp = (const struct amidisplaycc_screen_descr *)screenp;
depth = adccscreenp->depth;
adp = dp;
maxcolor = (1 << depth) - 1;
/* Sanity checks because of fixed buffers */
if (depth > MAXDEPTH || maxcolor >= MAXCOLORS)
return (ENOMEM);
if (screenp->nrows > MAXROWS)
return (ENOMEM);
fontwidth = screenp->fontwidth;
fontheight = screenp->fontheight;
/*
* The screen size is defined in characters.
* Calculate the pixel size using the font size.
*/
dimension.width = screenp->ncols * fontwidth;
dimension.height = screenp->nrows * fontheight;
view = grf_alloc_view(NULL, &dimension, depth);
if (view == NULL)
return (ENOMEM);
/*
* First screen gets the statically allocated console screen.
* Others are allocated dynamically.
*/
if (adp == NULL) {
scr = &amidisplaycc_consolescreen;
if (scr->isconsole)
panic("more than one console?");
scr->isconsole = 1;
} else {
scr = malloc(sizeof(adccscr_t), M_DEVBUF, M_WAITOK|M_ZERO);
}
scr->view = view;
scr->ncols = screenp->ncols;
scr->nrows = screenp->nrows;
/* Copies of most used values */
scr->width = dimension.width;
scr->height = dimension.height;
scr->depth = depth;
scr->widthbytes = view->bitmap->bytes_per_row;
scr->linebytes = scr->widthbytes + view->bitmap->row_mod;
scr->rowbytes = scr->linebytes * fontheight;
scr->device = adp;
/*
* Try to find a suitable font.
* Avoid everything but the builtin font for console screen.
* Builtin font is used if no other is found, even if it
* has the wrong size.
*/
KASSERT(fontwidth == 8);
scr->wsfont = NULL;
scr->wsfontcookie = -1;
scr->fontwidth = fontwidth;
scr->fontheight = fontheight;
if (adp)
amidisplaycc_setfont(scr, NULL);
if (scr->wsfont == NULL)
{
scr->wsfont = amidisplaycc_getbuiltinfont();
scr->wsfontcookie = -1;
}
KASSERT(scr->wsfont);
KASSERT(scr->wsfont->stride == 1);
for (i = 0 ; i < depth ; i++) {
scr->planes[i] = view->bitmap->plane[i];
}
for (i = 0 ; i < MAXROWS ; i++)
scr->rowmasks[i] = 0;
/* Simple one-to-one mapping for most colors */
for (i = 0 ; i < MAXCOLORS ; i++)
scr->colormap[i] = i;
/*
* Arrange the most used pens to quickest colors.
* The default color for given depth is (1<<depth)-1.
* It is assumed it is used most and it is mapped to
* color that can be drawn by writing data to one bitplane
* only.
* So map colors 3->2, 7->4, 15->8 and so on.
*/
for (i = 2 ; i < MAXCOLORS ; i *= 2) {
j = i * 2 - 1;
if (j < MAXCOLORS) {
scr->colormap[i] = j;
scr->colormap[j] = i;
}
}
/*
* Set the default colormap.
*/
if (depth == 1)
amidisplaycc_setemulcmap(scr, &pal2);
else if (depth == 2)
amidisplaycc_setemulcmap(scr, &pal4);
else
amidisplaycc_setemulcmap(scr, &pal8);
*cookiep = scr;
/* cursor initially at top left */
scr->cursorrow = -1;
scr->cursorcol = -1;
*curxp = 0;
*curyp = 0;
amidisplaycc_cursor(scr, 1, *curxp, *curyp);
*defattrp = MAKEATTR(maxcolor, 0, 0);
/* Show the console automatically */
if (adp == NULL)
grf_display_view(scr->view);
if (adp) {
dprintf("amidisplaycc: allocated screen; %dx%dx%d; font=%s\n",
dimension.width,
dimension.height,
depth,
scr->wsfont->name);
}
return (0);
}
/*
* Destroy a screen.
*/
void
amidisplaycc_free_screen(void *dp, void *screen)
{
struct amidisplaycc_screen * scr;
struct amidisplaycc_softc * adp;
scr = screen;
adp = (struct amidisplaycc_softc*)dp;
if (scr == NULL)
return;
/* Free the used font */
if (scr->wsfont && scr->wsfontcookie != -1)
wsfont_unlock(scr->wsfontcookie);
scr->wsfont = NULL;
scr->wsfontcookie = -1;
if (adp->currentscreen == scr)
adp->currentscreen = NULL;
if (scr->view)
grf_free_view(scr->view);
scr->view = NULL;
/* Take care not to free the statically allocated console screen */
if (scr != &amidisplaycc_consolescreen) {
free(scr, M_DEVBUF);
}
}
/*
* Switch to another vt. Switch is always made immediately.
*/
/* ARGSUSED2 */
int
amidisplaycc_show_screen(void *dp, void *screen, int waitok,
void (*cb) (void *, int, int), void *cbarg)
{
adccscr_t *scr;
struct amidisplaycc_softc *adp;
adp = (struct amidisplaycc_softc*)dp;
scr = screen;
if (adp == NULL) {
dprintf("amidisplaycc_show_screen: adp==NULL\n");
return (EINVAL);
}
if (scr == NULL) {
dprintf("amidisplaycc_show_screen: scr==NULL\n");
return (EINVAL);
}
if (adp->gfxon) {
dprintf("amidisplaycc: Screen shift while in gfx mode?");
adp->gfxon = 0;
}
adp->currentscreen = scr;
adp->ison = 1;
grf_display_view(scr->view);
return (0);
}
/*
* Load/set a font.
*
* Only setting is supported, as the wsfont pseudo-device can
* handle the loading of fonts for us.
*/
int
amidisplaycc_load_font(void *dp, void *cookie, struct wsdisplay_font *font)
{
struct amidisplaycc_softc * adp __diagused;
struct amidisplaycc_screen * scr __diagused;
adp = dp;
scr = cookie;
KASSERT(adp);
KASSERT(scr);
KASSERT(font);
KASSERT(font->name);
if (font->data)
{
/* request to load the font, not supported */
return (EINVAL);
}
else
{
/* request to use the given font on this screen */
return amidisplaycc_setfont(scr, font->name);
}
}
/*
* Set display on/off.
*/
static int
amidisplaycc_setvideo(struct amidisplaycc_softc *adp, int mode)
{
view_t * view;
if (adp == NULL) {
dprintf("amidisplaycc_setvideo: adp==NULL\n");
return (EINVAL);
}
if (adp->currentscreen == NULL) {
dprintf("amidisplaycc_setvideo: adp->currentscreen==NULL\n");
return (EINVAL);
}
/* select graphics or emulation screen */
if (adp->gfxon && adp->gfxview)
view = adp->gfxview;
else
view = adp->currentscreen->view;
if (mode) {
/* on */
grf_display_view(view);
dprintf("amidisplaycc: video is now on\n");
adp->ison = 1;
} else {
/* off */
grf_remove_view(view);
dprintf("amidisplaycc: video is now off\n");
adp->ison = 0;
}
return (0);
}
/*
* Handle the WSDISPLAY_[PUT/GET]CMAP ioctls.
* Just handle the copying of data to/from userspace and
* let the functions amidisplaycc_setcmap and amidisplaycc_putcmap
* do the real work.
*/
static int
amidisplaycc_cmapioctl(view_t *view, u_long cmd, struct wsdisplay_cmap *cmap)
{
struct wsdisplay_cmap tmpcmap;
u_char cmred[MAXCOLORS];
u_char cmgrn[MAXCOLORS];
u_char cmblu[MAXCOLORS];
int err;
if (cmap->index >= MAXCOLORS ||
cmap->count > MAXCOLORS ||
cmap->index + cmap->count > MAXCOLORS)
return (EINVAL);
if (cmap->count == 0)
return (0);
tmpcmap.index = cmap->index;
tmpcmap.count = cmap->count;
tmpcmap.red = cmred;
tmpcmap.green = cmgrn;
tmpcmap.blue = cmblu;
if (cmd == WSDISPLAYIO_PUTCMAP) {
/* copy the color data to kernel space */
err = copyin(cmap->red, cmred, cmap->count);
if (err)
return (err);
err = copyin(cmap->green, cmgrn, cmap->count);
if (err)
return (err);
err = copyin(cmap->blue, cmblu, cmap->count);
if (err)
return (err);
return amidisplaycc_setcmap(view, &tmpcmap);
} else if (cmd == WSDISPLAYIO_GETCMAP) {
err = amidisplaycc_getcmap(view, &tmpcmap);
if (err)
return (err);
/* copy data to user space */
err = copyout(cmred, cmap->red, cmap->count);
if (err)
return (err);
err = copyout(cmgrn, cmap->green, cmap->count);
if (err)
return (err);
err = copyout(cmblu, cmap->blue, cmap->count);
if (err)
return (err);
return (0);
} else
return (EPASSTHROUGH);
}
/*
* Set the palette of a emulation screen.
* Here we do only color remapping and then call
* amidisplaycc_setcmap to do the work.
*/
static int
amidisplaycc_setemulcmap(struct amidisplaycc_screen *scr,
struct wsdisplay_cmap *cmap)
{
struct wsdisplay_cmap tmpcmap;
u_char red [MAXCOLORS];
u_char grn [MAXCOLORS];
u_char blu [MAXCOLORS];
int rc;
int i;
/*
* Get old palette first.
* Because of the color mapping going on in the emulation
* screen the color range may not be contiguous in the real
* palette.
* So get the whole palette, insert the new colors
* at the appropriate places and then set the whole
* palette back.
*/
tmpcmap.index = 0;
tmpcmap.count = 1 << scr->depth;
tmpcmap.red = red;
tmpcmap.green = grn;
tmpcmap.blue = blu;
rc = amidisplaycc_getcmap(scr->view, &tmpcmap);
if (rc)
return (rc);
for (i = cmap->index ; i < cmap->index + cmap->count ; i++) {
tmpcmap.red [ scr->colormap[ i ] ] = cmap->red [ i ];
tmpcmap.green [ scr->colormap[ i ] ] = cmap->green [ i ];
tmpcmap.blue [ scr->colormap[ i ] ] = cmap->blue [ i ];
}
rc = amidisplaycc_setcmap(scr->view, &tmpcmap);
if (rc)
return (rc);
return (0);
}
/*
* Set the colormap for the given screen.
*/
static int
amidisplaycc_setcmap(view_t *view, struct wsdisplay_cmap *cmap)
{
u_long cmentries [MAXCOLORS];
u_int colors;
int index;
int count;
int err;
colormap_t cm;
if (view == NULL)
return (EINVAL);
if (!cmap || !cmap->red || !cmap->green || !cmap->blue) {
dprintf("amidisplaycc_setcmap: other==NULL\n");
return (EINVAL);
}
index = cmap->index;
count = cmap->count;
colors = (1 << view->bitmap->depth);
if (count > colors || index >= colors || index + count > colors)
return (EINVAL);
if (count == 0)
return (0);
cm.entry = cmentries;
cm.first = index;
cm.size = count;
/*
* Get the old colormap. We need to do this at least to know
* how many bits to use with the color values.
*/
err = grf_get_colormap(view, &cm);
if (err)
return (err);
/*
* The palette entries from wscons contain 8 bits per gun.
* We need to convert them to the number of bits the view
* expects. That is typically 4 or 8. Here we calculate the
* conversion constants with which we divide the color values.
*/
if (cm.type == CM_COLOR) {
int c, green_div, blue_div, red_div;
red_div = 256 / (cm.red_mask + 1);
green_div = 256 / (cm.green_mask + 1);
blue_div = 256 / (cm.blue_mask + 1);
for (c = 0 ; c < count ; c++)
cm.entry[c + index] = MAKE_COLOR_ENTRY(
cmap->red[c] / red_div,
cmap->green[c] / green_div,
cmap->blue[c] / blue_div);
} else if (cm.type == CM_GREYSCALE) {
int c, grey_div;
grey_div = 256 / (cm.grey_mask + 1);
/* Generate grey from average of r-g-b (?) */
for (c = 0 ; c < count ; c++)
cm.entry[c + index] = MAKE_COLOR_ENTRY(
0,
0,
(cmap->red[c] +
cmap->green[c] +
cmap->blue[c]) / 3 / grey_div);
} else
return (EINVAL); /* Hmhh */
/*
* Now we have a new colormap that contains all the entries. Set
* it to the view.
*/
err = grf_use_colormap(view, &cm);
if (err)
return err;
return (0);
}
/*
* Return the colormap of the given screen.
*/
static int
amidisplaycc_getcmap(view_t *view, struct wsdisplay_cmap *cmap)
{
u_long cmentries [MAXCOLORS];
u_int colors;
int index;
int count;
int err;
colormap_t cm;
if (view == NULL)
return (EINVAL);
if (!cmap || !cmap->red || !cmap->green || !cmap->blue)
return (EINVAL);
index = cmap->index;
count = cmap->count;
colors = (1 << view->bitmap->depth);
if (count > colors || index >= colors || index + count > colors)
return (EINVAL);
if (count == 0)
return (0);
cm.entry = cmentries;
cm.first = index;
cm.size = count;
err = grf_get_colormap(view, &cm);
if (err)
return (err);
/*
* Copy color data to wscons-style structure. Translate to
* 8 bits/gun from whatever resolution the color natively is.
*/
if (cm.type == CM_COLOR) {
int c, red_mul, green_mul, blue_mul;
red_mul = 256 / (cm.red_mask + 1);
green_mul = 256 / (cm.green_mask + 1);
blue_mul = 256 / (cm.blue_mask + 1);
for (c = 0 ; c < count ; c++) {
cmap->red[c] = red_mul *
CM_GET_RED(cm.entry[index+c]);
cmap->green[c] = green_mul *
CM_GET_GREEN(cm.entry[index+c]);
cmap->blue[c] = blue_mul *
CM_GET_BLUE(cm.entry[index+c]);
}
} else if (cm.type == CM_GREYSCALE) {
int c, grey_mul;
grey_mul = 256 / (cm.grey_mask + 1);
for (c = 0 ; c < count ; c++) {
cmap->red[c] = grey_mul *
CM_GET_GREY(cm.entry[index+c]);
cmap->green[c] = grey_mul *
CM_GET_GREY(cm.entry[index+c]);
cmap->blue[c] = grey_mul *
CM_GET_GREY(cm.entry[index+c]);
}
} else
return (EINVAL);
return (0);
}
/*
* Find and set a font for the given screen.
*
* If fontname is given, a font with that name and suitable
* size (determined by the screen) is searched for.
* If fontname is NULL, a font with suitable size is searched.
*
* On success, the found font is assigned to the screen and possible
* old font is freed.
*/
static int
amidisplaycc_setfont(struct amidisplaycc_screen *scr, const char *fontname)
{
struct wsdisplay_font *wsfont;
int wsfontcookie;
KASSERT(scr);
wsfontcookie = wsfont_find(fontname,
scr->fontwidth,
scr->fontheight,
1,
WSDISPLAY_FONTORDER_L2R,
WSDISPLAY_FONTORDER_L2R,
WSFONT_FIND_BITMAP);
if (wsfontcookie == -1)
return (EINVAL);
/* Suitable font found. Now lock it. */
if (wsfont_lock(wsfontcookie, &wsfont))
return (EINVAL);
KASSERT(wsfont);
if (scr->wsfont && scr->wsfontcookie != -1)
wsfont_unlock(scr->wsfontcookie);
scr->wsfont = wsfont;
scr->wsfontcookie = wsfontcookie;
return (0);
}
/*
* Return a font that is guaranteed to exist.
*/
static const struct wsdisplay_font *
amidisplaycc_getbuiltinfont(void)
{
static struct wsdisplay_font font;
extern unsigned char kernel_font_width_8x8;
extern unsigned char kernel_font_height_8x8;
extern unsigned char kernel_font_lo_8x8;
extern unsigned char kernel_font_hi_8x8;
extern unsigned char kernel_font_8x8[];
font.name = "kf8x8";
font.firstchar = kernel_font_lo_8x8;
font.numchars = kernel_font_hi_8x8 - kernel_font_lo_8x8 + 1;
font.fontwidth = kernel_font_width_8x8;
font.stride = 1;
font.fontheight = kernel_font_height_8x8;
font.data = kernel_font_8x8;
/* these values aren't really used for anything */
font.encoding = WSDISPLAY_FONTENC_ISO;
font.bitorder = WSDISPLAY_FONTORDER_KNOWN;
font.byteorder = WSDISPLAY_FONTORDER_KNOWN;
return &font;
}
/* ARGSUSED */
void
amidisplaycc_pollc(void *cookie, int on)
{
}
/*
* These dummy functions are here just so that we can compete of
* the console at init.
* If we win the console then the wscons system will provide the
* real ones which in turn will call the apropriate wskbd device.
* These should never be called.
*/
/* ARGSUSED */
void
amidisplaycc_cnputc(dev_t cd, int ch)
{
}
/* ARGSUSED */
int
amidisplaycc_cngetc(dev_t cd)
{
return (0);
}
/* ARGSUSED */
void
amidisplaycc_cnpollc(dev_t cd, int on)
{
}
/*
* Prints stuff if DEBUG is turned on.
*/
/* ARGSUSED */
static void
dprintf(const char *fmt, ...)
{
#ifdef DEBUG
va_list ap;
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
#endif
}
#endif /* AMIDISPLAYCC */
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