9c10440f53
driver methods, call the driver's putchar() method to redraw the affected areas. For unaccelerated framebuffers where reads are expensive and we can't spare any memory for a shadow framebuffer. Enabled by setting VCONS_DONT_READ in scr_flags
131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
/* $NetBSD: wsdisplay_vconsvar.h,v 1.11 2010/08/18 16:46:51 macallan Exp $ */
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/*-
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* Copyright (c) 2005, 2006 Michael Lorenz
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _WSDISPLAY_VCONS_H_
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#define _WSDISPLAY_VCONS_H_
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#include "opt_wsdisplay_compat.h"
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#include "opt_vcons.h"
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struct vcons_data;
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struct vcons_screen {
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struct rasops_info scr_ri;
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LIST_ENTRY(vcons_screen) next;
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void *scr_cookie;
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struct vcons_data *scr_vd;
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struct vcons_data *scr_origvd;
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const struct wsscreen_descr *scr_type;
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uint16_t *scr_chars;
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long *scr_attrs;
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long scr_defattr;
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/* static flags set by the driver */
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uint32_t scr_flags;
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#define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */
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#define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */
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#define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to
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* poll the busy flag when switching
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* - for drivers that use software
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* drawing */
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#define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */
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#define VCONS_DONT_READ 0x10 /* avoid framebuffer reads */
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/* status flags used by vcons */
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uint32_t scr_status;
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#define VCONS_IS_VISIBLE 1 /* this screen is currently visible */
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/* non zero when some rasops operation is in progress */
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int scr_busy;
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#ifdef WSDISPLAY_SCROLLSUPPORT
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int scr_lines_in_buffer;
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int scr_current_line;
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int scr_line_wanted;
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int scr_offset_to_zero;
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int scr_current_offset;
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#endif
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};
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#define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0)
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#define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0)
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#define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0)
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#define SCREEN_BUSY(scr) ((scr)->scr_busy = 1)
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#define SCREEN_IDLE(scr) ((scr)->scr_busy = 0)
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#define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE)
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#define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE)
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#define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW)
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#define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW)
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struct vcons_data {
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/* usually the drivers softc */
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void *cookie;
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/*
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* setup the rasops part of the passed vcons_screen, like
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* geometry, framebuffer address, font, characters, acceleration.
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* we pass the cookie as 1st parameter
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*/
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void (*init_screen)(void *, struct vcons_screen *, int,
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long *);
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/* accessops */
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int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *);
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/* rasops */
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void (*copycols)(void *, int, int, int, int);
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void (*erasecols)(void *, int, int, int, long);
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void (*copyrows)(void *, int, int, int);
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void (*eraserows)(void *, int, int, long);
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void (*putchar)(void *, int, int, u_int, long);
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void (*cursor)(void *, int, int, int);
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/* called before vcons_redraw_screen */
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void (*show_screen_cb)(struct vcons_screen *);
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/* virtual screen management stuff */
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void (*switch_cb)(void *, int, int);
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void *switch_cb_arg;
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#ifdef VCONS_SWITCH_ASYNC
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lwp_t *redraw_thread;
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int start_drawing, done_drawing; /* for the drawing thread */
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#endif
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struct callout switch_callout;
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uint32_t switch_pending;
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LIST_HEAD(, vcons_screen) screens;
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struct vcons_screen *active, *wanted;
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const struct wsscreen_descr *currenttype;
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int switch_poll_count;
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};
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int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *,
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struct wsdisplay_accessops *);
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int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int,
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long *);
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void vcons_redraw_screen(struct vcons_screen *);
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void vcons_replay_msgbuf(struct vcons_screen *);
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#endif /* _WSDISPLAY_VCONS_H_ */
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