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wsdisplayvar.h revision 1.9
      1 /* $NetBSD: wsdisplayvar.h,v 1.9 1999/01/13 16:21:02 drochner Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1996, 1997 Christopher G. Demetriou.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Christopher G. Demetriou
     17  *	for the NetBSD Project.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 struct device;
     34 
     35 /*
     36  * WSDISPLAY interfaces
     37  */
     38 
     39 /*
     40  * Emulation functions, for displays that can support glass-tty terminal
     41  * emulations.  These are character oriented, with row and column
     42  * numbers starting at zero in the upper left hand corner of the
     43  * screen.
     44  *
     45  * These are used only when emulating a terminal.  Therefore, displays
     46  * drivers which cannot emulate terminals do not have to provide them.
     47  *
     48  * There is a "void *" cookie provided by the display driver associated
     49  * with these functions, which is passed to them when they are invoked.
     50  */
     51 struct wsdisplay_emulops {
     52 	void	(*cursor) __P((void *c, int on, int row, int col));
     53 	unsigned int (*mapchar) __P((void *, int));
     54 	void	(*putchar) __P((void *c, int row, int col,
     55 				u_int uc, long attr));
     56 	void	(*copycols) __P((void *c, int row, int srccol, int dstcol,
     57 		    int ncols));
     58 	void	(*erasecols) __P((void *c, int row, int startcol,
     59 		    int ncols, long));
     60 	void	(*copyrows) __P((void *c, int srcrow, int dstrow,
     61 		    int nrows));
     62 	void	(*eraserows) __P((void *c, int row, int nrows, long));
     63 	int	(*alloc_attr) __P((void *c, int fg, int bg, int flags, long *));
     64 /* fg / bg values. Made identical to ANSI terminal color codes. */
     65 #define WSCOL_BLACK	0
     66 #define WSCOL_RED	1
     67 #define WSCOL_GREEN	2
     68 #define WSCOL_BROWN	3
     69 #define WSCOL_BLUE	4
     70 #define WSCOL_MAGENTA	5
     71 #define WSCOL_CYAN	6
     72 #define WSCOL_WHITE	7
     73 /* flag values: */
     74 #define WSATTR_REVERSE	1
     75 #define WSATTR_HILIT	2
     76 #define WSATTR_BLINK	4
     77 #define WSATTR_UNDERLINE 8
     78 #define WSATTR_WSCOLORS 16
     79 	/* XXX need a free_attr() ??? */
     80 };
     81 
     82 struct wsscreen_descr {
     83 	char *name;
     84 	int ncols, nrows;
     85 	const struct wsdisplay_emulops *textops;
     86 	int fontwidth, fontheight;
     87 	int capabilities;
     88 #define WSSCREEN_WSCOLORS	1	/* minimal color capability */
     89 #define WSSCREEN_REVERSE	2	/* can display reversed */
     90 #define WSSCREEN_HILIT		4	/* can highlight (however) */
     91 #define WSSCREEN_BLINK		8	/* can blink */
     92 #define WSSCREEN_UNDERLINE	16	/* can underline */
     93 };
     94 
     95 struct wsdisplay_font;
     96 /*
     97  * Display access functions, invoked by user-land programs which require
     98  * direct device access, such as X11.
     99  *
    100  * There is a "void *" cookie provided by the display driver associated
    101  * with these functions, which is passed to them when they are invoked.
    102  */
    103 struct wsdisplay_accessops {
    104 	int	(*ioctl) __P((void *v, u_long cmd, caddr_t data, int flag,
    105 		    struct proc *p));
    106 	int	(*mmap) __P((void *v, off_t off, int prot));
    107 	int	(*alloc_screen) __P((void *, const struct wsscreen_descr *,
    108 				     void **, int *, int *, long *));
    109 	void	(*free_screen) __P((void *, void *));
    110 	void	(*show_screen) __P((void *, void *));
    111 	int	(*load_font) __P((void *, void *, struct wsdisplay_font *));
    112 };
    113 
    114 /*
    115  * Attachment information provided by wsdisplaydev devices when attaching
    116  * wsdisplay units.
    117  */
    118 struct wsdisplaydev_attach_args {
    119 	const struct wsdisplay_accessops *accessops;	/* access ops */
    120 	void	*accesscookie;				/* access cookie */
    121 };
    122 
    123 /* passed to wscons by the video driver to tell about its capabilities */
    124 struct wsscreen_list {
    125 	int nscreens;
    126 	const struct wsscreen_descr **screens;
    127 };
    128 
    129 /*
    130  * Attachment information provided by wsemuldisplaydev devices when attaching
    131  * wsdisplay units.
    132  */
    133 struct wsemuldisplaydev_attach_args {
    134 	int	console;				/* is it console? */
    135 	const struct wsscreen_list *scrdata;		/* screen cfg info */
    136 	const struct wsdisplay_accessops *accessops;	/* access ops */
    137 	void	*accesscookie;				/* access cookie */
    138 };
    139 
    140 #include "locators.h"
    141 
    142 #define	wsemuldisplaydevcf_console	cf_loc[WSEMULDISPLAYDEVCF_CONSOLE]	/* spec'd as console? */
    143 #define	WSEMULDISPLAYDEVCF_CONSOLE_UNK	(WSEMULDISPLAYDEVCF_CONSOLE_DEFAULT)
    144 
    145 struct wscons_syncops {
    146 	int (*detach) __P((void *, int, void (*)(void *, int), void *));
    147 	int (*attach) __P((void *, int));
    148 	int (*check) __P((void *));
    149 	void (*destroy) __P((void *));
    150 };
    151 
    152 /*
    153  * Autoconfiguration helper functions.
    154  */
    155 void	wsdisplay_cnattach __P((const struct wsscreen_descr *, void *,
    156 				int, int, long));
    157 int	wsdisplaydevprint __P((void *, const char *));
    158 int	wsemuldisplaydevprint __P((void *, const char *));
    159 
    160 /*
    161  * Console interface.
    162  */
    163 void	wsdisplay_cnputc __P((dev_t dev, int i));
    164 
    165 /*
    166  * for use by compatibility code
    167  */
    168 struct wsdisplay_softc;
    169 struct wsscreen;
    170 int wsscreen_attach_sync __P((struct wsscreen *,
    171 			      const struct wscons_syncops *, void *));
    172 int wsscreen_detach_sync __P((struct wsscreen *));
    173 int wsscreen_lookup_sync __P((struct wsscreen *,
    174 			      const struct wscons_syncops *, void **));
    175 
    176 int wsdisplay_maxscreenidx __P((struct wsdisplay_softc *));
    177 int wsdisplay_screenstate __P((struct wsdisplay_softc *, int));
    178 int wsdisplay_getactivescreen __P((struct wsdisplay_softc *));
    179 int wsscreen_switchwait __P((struct wsdisplay_softc *, int));
    180 
    181 int wsdisplay_internal_ioctl __P((struct wsdisplay_softc *sc,
    182 				  struct wsscreen *,
    183 				  u_long cmd, caddr_t data,
    184 				  int flag, struct proc *p));
    185 
    186 int wsdisplay_usl_ioctl __P((struct wsdisplay_softc *, struct wsscreen *,
    187 			     u_long, caddr_t, int, struct proc *));
    188 
    189 int wsdisplay_cfg_ioctl __P((struct wsdisplay_softc *sc,
    190 			     u_long cmd, caddr_t data,
    191 			     int flag, struct proc *p));
    192