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/* $OpenBSD: rasops.h,v 1.26 2023/02/03 18:32:31 miod Exp $ */
/* $NetBSD: rasops.h,v 1.13 2000/06/13 13:36:54 ad Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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.
*/
#ifndef _RASOPS_H_
#define _RASOPS_H_ 1
#include <sys/task.h>
#ifdef SMALL_KERNEL
#define RASOPS_SMALL
#endif
#include "rasops_glue.h"
struct wsdisplay_font;
/* For rasops_info::ri_flg */
#define RI_FULLCLEAR 0x0001 /* eraserows() hack to clear full screen */
#define RI_FORCEMONO 0x0002 /* monochrome output even if we can do color */
#define RI_BSWAP 0x0004 /* framebuffer endianness doesn't match CPU */
#define RI_CURSOR 0x0008 /* cursor is switched on */
#define RI_CLEAR 0x0010 /* clear display on startup */
#define RI_CLEARMARGINS 0x0020 /* clear display margins on startup */
#define RI_CENTER 0x0040 /* center onscreen output */
#define RI_CURSORCLIP 0x0080 /* cursor is currently clipped */
#define RI_ROTATE_CW 0x0100 /* display is rotated, 90 deg clockwise */
#define RI_ROTATE_CCW 0x0200 /* display is rotated, 90 deg anti-clockwise */
#define RI_CFGDONE 0x0400 /* rasops_reconfig() completed successfully */
#define RI_VCONS 0x0800 /* virtual consoles */
#define RI_WRONLY 0x1000 /* avoid framebuffer reads */
struct rasops_screen;
struct rasops_info {
/* These must be filled in by the caller */
int ri_depth; /* depth in bits */
u_char *ri_bits; /* ptr to bits */
int ri_width; /* width (pels) */
int ri_height; /* height (pels) */
int ri_stride; /* stride in bytes */
/*
* These can optionally be left zeroed out. If you fill ri_font,
* but aren't using wsfont, set ri_wsfcookie to -1.
*/
struct wsdisplay_font *ri_font;
int ri_wsfcookie; /* wsfont cookie */
void *ri_hw; /* driver private data; ignored by rasops */
struct wsdisplay_charcell *ri_bs; /* character backing store */
int ri_crow; /* cursor row */
int ri_ccol; /* cursor column */
int ri_flg; /* various operational flags */
/*
* These are optional and will default if zero. Meaningless
* on depths other than 15, 16, 24 and 32 bits per pel. On
* 24 bit displays, ri_{r,g,b}num must be 8.
*/
u_char ri_rnum; /* number of bits for red */
u_char ri_gnum; /* number of bits for green */
u_char ri_bnum; /* number of bits for blue */
u_char ri_rpos; /* which bit red starts at */
u_char ri_gpos; /* which bit green starts at */
u_char ri_bpos; /* which bit blue starts at */
/* These are filled in by rasops_init() */
int ri_emuwidth; /* width we actually care about */
int ri_emuheight; /* height we actually care about */
int ri_emustride; /* bytes per row we actually care about */
int ri_rows; /* number of rows (characters, not pels) */
int ri_cols; /* number of columns (characters, not pels) */
int ri_delta; /* row delta in bytes */
int ri_pelbytes; /* bytes per pel (may be zero) */
int ri_fontscale; /* fontheight * fontstride */
int ri_xscale; /* fontwidth * pelbytes */
int ri_yscale; /* fontheight * stride */
u_char *ri_origbits; /* where screen bits actually start */
int ri_xorigin; /* where ri_bits begins (x) */
int ri_yorigin; /* where ri_bits begins (y) */
int32_t ri_devcmap[16]; /* color -> framebuffer data */
/* The emulops you need to use, and the screen caps for wscons */
struct wsdisplay_emulops ri_ops;
int ri_caps;
/* Callbacks so we can share some code */
int (*ri_do_cursor)(struct rasops_info *);
void (*ri_updatecursor)(struct rasops_info *);
#if NRASOPS_ROTATION > 0
/* Used to intercept putchar to permit display rotation */
struct wsdisplay_emulops ri_real_ops;
#endif
int ri_nscreens;
LIST_HEAD(, rasops_screen) ri_screens;
struct rasops_screen *ri_active;
void (*ri_switchcb)(void *, int, int);
void *ri_switchcbarg;
void *ri_switchcookie;
struct task ri_switchtask;
int (*ri_putchar)(void *, int, int, u_int, uint32_t);
int (*ri_copycols)(void *, int, int, int, int);
int (*ri_erasecols)(void *, int, int, int, uint32_t);
int (*ri_copyrows)(void *, int, int, int);
int (*ri_eraserows)(void *, int, int, uint32_t);
int (*ri_pack_attr)(void *, int, int, int, uint32_t *);
};
#define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d)))
/*
* rasops_init().
*
* Integer parameters are the number of rows and columns we'd *like*.
*
* In terms of optimization, fonts that are a multiple of 8 pixels wide
* work the best.
*
* rasops_init() takes care of rasops_reconfig(). The parameters to both
* are the same. If calling rasops_reconfig() to change the font and
* ri_wsfcookie >= 0, you must call wsfont_unlock() on it, and reset it
* to -1 (or a new, valid cookie).
*/
/*
* Per-depth initialization functions. These should not be called outside
* the rasops code.
*/
void rasops1_init(struct rasops_info *);
void rasops4_init(struct rasops_info *);
void rasops8_init(struct rasops_info *);
void rasops15_init(struct rasops_info *);
void rasops24_init(struct rasops_info *);
void rasops32_init(struct rasops_info *);
/* rasops.c */
int rasops_init(struct rasops_info *, int, int);
int rasops_reconfig(struct rasops_info *, int, int);
int rasops_eraserows(void *, int, int, uint32_t);
int rasops_erasecols(void *, int, int, int, uint32_t);
int rasops_alloc_screen(void *, void **, int *, int *, uint32_t *);
void rasops_free_screen(void *, void *);
int rasops_show_screen(void *, void *, int,
void (*)(void *, int, int), void *);
int rasops_load_font(void *, void *, struct wsdisplay_font *);
int rasops_list_font(void *, struct wsdisplay_font *);
int rasops_getchar(void *, int, int, struct wsdisplay_charcell *);
void rasops_scrollback(void *, void *, int);
void rasops_claim_framebuffer(paddr_t, psize_t, struct device *);
int rasops_check_framebuffer(paddr_t);
extern const u_char rasops_cmap[256*3];
#endif /* _RASOPS_H_ */
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