1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.8 2007/08/06 03:11:32 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 Michael Lorenz 5 * 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 by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _WSDISPLAY_VCONS_H_ 37 #define _WSDISPLAY_VCONS_H_ 38 39 #include "opt_wsdisplay_compat.h" 40 #include "opt_vcons.h" 41 42 struct vcons_data; 43 44 struct vcons_screen { 45 struct rasops_info scr_ri; 46 LIST_ENTRY(vcons_screen) next; 47 void *scr_cookie; 48 struct vcons_data *scr_vd; 49 struct vcons_data *scr_origvd; 50 const struct wsscreen_descr *scr_type; 51 uint16_t *scr_chars; 52 long *scr_attrs; 53 long scr_defattr; 54 /* static flags set by the driver */ 55 uint32_t scr_flags; 56 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 57 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 58 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 59 * poll the busy flag when switching 60 * - for drivers that use software 61 * drawing */ 62 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 63 /* status flags used by vcons */ 64 uint32_t scr_status; 65 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 66 /* non zero when some rasops operation is in progress */ 67 int scr_busy; 68 #ifdef WSDISPLAY_SCROLLSUPPORT 69 int scr_lines_in_buffer; 70 int scr_current_line; 71 int scr_line_wanted; 72 int scr_offset_to_zero; 73 int scr_current_offset; 74 #endif 75 }; 76 77 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 78 #define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0) 79 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 80 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1) 81 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0) 82 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 83 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 84 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 85 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 86 87 struct vcons_data { 88 /* usually the drivers softc */ 89 void *cookie; 90 91 /* 92 * setup the rasops part of the passed vcons_screen, like 93 * geometry, framebuffer address, font, characters, acceleration. 94 * we pass the cookie as 1st parameter 95 */ 96 void (*init_screen)(void *, struct vcons_screen *, int, 97 long *); 98 99 /* accessops */ 100 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 101 102 /* rasops */ 103 void (*copycols)(void *, int, int, int, int); 104 void (*erasecols)(void *, int, int, int, long); 105 void (*copyrows)(void *, int, int, int); 106 void (*eraserows)(void *, int, int, long); 107 void (*putchar)(void *, int, int, u_int, long); 108 void (*cursor)(void *, int, int, int); 109 /* called before vcons_redraw_screen */ 110 void (*show_screen_cb)(struct vcons_screen *); 111 /* virtual screen management stuff */ 112 void (*switch_cb)(void *, int, int); 113 void *switch_cb_arg; 114 #ifdef VCONS_SWITCH_ASYNC 115 lwp_t *redraw_thread; 116 int start_drawing, done_drawing; /* for the drawing thread */ 117 #endif 118 struct callout switch_callout; 119 uint32_t switch_pending; 120 LIST_HEAD(, vcons_screen) screens; 121 struct vcons_screen *active, *wanted; 122 const struct wsscreen_descr *currenttype; 123 int switch_poll_count; 124 }; 125 126 int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *, 127 struct wsdisplay_accessops *); 128 129 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 130 long *); 131 132 void vcons_redraw_screen(struct vcons_screen *); 133 134 135 136 #endif /* _WSDISPLAY_VCONS_H_ */ 137