Home | History | Annotate | Line # | Download | only in ic 
      1 /* $NetBSD: pcdisplayvar.h,v 1.20 2014/11/12 03:12:35 christos 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #ifdef _KERNEL_OPT
     30 #include "opt_pcdisplay.h"
     31 #endif
     32 
     33 struct pcdisplayscreen {
     34 	struct pcdisplay_handle *hdl;
     35 
     36 	const struct wsscreen_descr *type;
     37 
     38 	int active;		/* currently displayed */
     39 	u_int16_t *mem;		/* backing store for contents */
     40 
     41 	int cursoron;		/* cursor displayed? */
     42 #ifdef PCDISPLAY_SOFTCURSOR
     43 	int cursortmp;		/* glyph & attribute behind software cursor */
     44 #endif
     45 	int cursorcol, cursorrow;	/* current cursor position */
     46 
     47 	int dispoffset; 	/* offset of displayed area in video mem */
     48 	int visibleoffset;
     49 };
     50 
     51 struct pcdisplay_handle {
     52 	bus_space_tag_t	ph_iot, ph_memt;
     53 	bus_space_handle_t ph_ioh_6845, ph_memh;
     54 };
     55 
     56 static __inline u_int8_t _pcdisplay_6845_read(struct pcdisplay_handle *, int);
     57 static __inline void _pcdisplay_6845_write(struct pcdisplay_handle *, int,
     58 					 u_int8_t);
     59 
     60 static __inline u_int8_t _pcdisplay_6845_read(struct pcdisplay_handle *ph, int reg)
     61 {
     62 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
     63 	return (bus_space_read_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA));
     64 }
     65 
     66 static __inline void _pcdisplay_6845_write(struct pcdisplay_handle *ph,
     67 					int reg, uint8_t val)
     68 {
     69 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
     70 	bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA, val);
     71 }
     72 
     73 #define pcdisplay_6845_read(ph, reg) \
     74 	_pcdisplay_6845_read(ph, offsetof(struct reg_mc6845, reg))
     75 #define pcdisplay_6845_write(ph, reg, val) \
     76 	_pcdisplay_6845_write(ph, offsetof(struct reg_mc6845, reg), val)
     77 
     78 void	pcdisplay_cursor_init(struct pcdisplayscreen *, int);
     79 void	pcdisplay_cursor(void *, int, int, int);
     80 #if 0
     81 unsigned int pcdisplay_mapchar_simple(void *, int);
     82 #endif
     83 int	pcdisplay_mapchar(void *, int, unsigned int *);
     84 void	pcdisplay_putchar(void *, int, int, u_int, long);
     85 void	pcdisplay_copycols(void *, int, int, int,int);
     86 void	pcdisplay_erasecols(void *, int, int, int, long);
     87 void	pcdisplay_copyrows(void *, int, int, int);
     88 void	pcdisplay_eraserows(void *, int, int, long);
     89 void	pcdisplay_replaceattr(void *, long, long);
     90 struct wsdisplay_char;
     91 int	pcdisplay_getwschar(struct pcdisplayscreen *, struct wsdisplay_char *);
     92 int	pcdisplay_putwschar(struct pcdisplayscreen *, struct wsdisplay_char *);
     93