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pcdisplayvar.h revision 1.4 
      1 /* $NetBSD: pcdisplayvar.h,v 1.4 1998/07/24 16:12:18 drochner Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed for the NetBSD Project
     18  *	by Matthias Drochner.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 struct pcdisplayscreen {
     36 	struct pcdisplay_handle *hdl;
     37 
     38 	const struct wsscreen_descr *type;
     39 
     40 	int active;	/* currently displayed */
     41 	u_int16_t *mem; /* backing store for contents */
     42 
     43 	int cursoron;		/* cursor displayed? */
     44 	int vc_ccol, vc_crow;	/* current cursor position */
     45 
     46 	int dispoffset; /* offset of displayed area in video mem */
     47 };
     48 
     49 struct pcdisplay_handle {
     50 	bus_space_tag_t	ph_iot, ph_memt;
     51 	bus_space_handle_t ph_ioh_6845, ph_memh;
     52 };
     53 
     54 static inline u_int8_t _pcdisplay_6845_read __P((struct pcdisplay_handle *,
     55 						 int));
     56 static inline void _pcdisplay_6845_write __P((struct pcdisplay_handle *,
     57 					      int, u_int8_t));
     58 
     59 static inline u_int8_t _pcdisplay_6845_read(ph, reg)
     60 	struct pcdisplay_handle *ph;
     61 	int reg;
     62 {
     63 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
     64 	return (bus_space_read_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA));
     65 }
     66 
     67 static inline void _pcdisplay_6845_write(ph, reg, val)
     68 	struct pcdisplay_handle *ph;
     69 	int reg;
     70 	u_int8_t val;
     71 {
     72 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
     73 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA, val);
     74 }
     75 
     76 #define pcdisplay_6845_read(ph, reg) \
     77 	_pcdisplay_6845_read(ph, offsetof(struct reg_mc6845, reg))
     78 #define pcdisplay_6845_write(ph, reg, val) \
     79 	_pcdisplay_6845_write(ph, offsetof(struct reg_mc6845, reg), val)
     80 
     81 void	pcdisplay_cursor __P((void *, int, int, int));
     82 #if 0
     83 unsigned int pcdisplay_mapchar_simple __P((void *, int));
     84 #endif
     85 unsigned int pcdisplay_mapchar __P((void *, int));
     86 void	pcdisplay_putchar __P((void *, int, int, u_int, long));
     87 void	pcdisplay_copycols __P((void *, int, int, int,int));
     88 void	pcdisplay_erasecols __P((void *, int, int, int, long));
     89 void	pcdisplay_copyrows __P((void *, int, int, int));
     90 void	pcdisplay_eraserows __P((void *, int, int, long));
     91