1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.35 2025/07/25 18:19:12 martin 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _WSDISPLAY_VCONS_H_ 30 #define _WSDISPLAY_VCONS_H_ 31 32 #ifdef _KERNEL_OPT 33 #include "opt_wsdisplay_compat.h" 34 #include "opt_vcons.h" 35 #endif 36 37 #include <sys/atomic.h> 38 39 #include <dev/rasops/rasops.h> 40 #include <dev/wscons/wsdisplayvar.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 struct wsscreen_descr *scr_type; 51 uint32_t *scr_chars; 52 long *scr_attrs; 53 void (*putchar)(void *, int, int, u_int, long); 54 long scr_defattr; 55 /* static flags set by the driver */ 56 uint32_t scr_flags; 57 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 58 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 59 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 60 * poll the busy flag when switching 61 * - for drivers that use software 62 * drawing */ 63 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 64 /* 65 * the following flags are for drivers which either can't accelerate (all) copy 66 * operations or where drawing characters is faster than the blitter 67 * for example, Sun's Creator boards can't accelerate copycols() 68 */ 69 #define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */ 70 #define VCONS_NO_COPYROWS 0x20 /* use putchar() based copyrows() */ 71 #define VCONS_DONT_READ (VCONS_NO_COPYCOLS|VCONS_NO_COPYROWS|VCONS_NO_CURSOR) 72 /* avoid framebuffer reads */ 73 #define VCONS_LOADFONT 0x40 /* driver can load_font() */ 74 #define VCONS_NO_CURSOR 0x80 /* use putchar() based cursor(), to 75 * avoid fb reads */ 76 #define VCONS_FONT_BITS_R2L 0x100 /* request right-to-left bitorder in 77 * wsfont_find() */ 78 #define VCONS_FONT_BYTES_R2L 0x200 /* request right-to-left byteorder in 79 * wsfont_find() */ 80 81 /* status flags used by vcons */ 82 uint32_t scr_status; 83 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 84 /* non zero when some rasops operation is in progress */ 85 int scr_busy; 86 #ifdef WSDISPLAY_SCROLLSUPPORT 87 int scr_lines_in_buffer; 88 int scr_current_line; 89 int scr_line_wanted; 90 int scr_offset_to_zero; 91 int scr_current_offset; 92 #endif 93 #ifdef VCONS_DRAW_INTR 94 unsigned int scr_dirty; 95 #endif 96 }; 97 98 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 99 #define SCREEN_IS_BUSY(scr) (membar_consumer(), (scr)->scr_busy != 0) 100 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 101 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1, membar_producer()) 102 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0, membar_producer()) 103 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 104 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 105 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 106 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 107 108 #define DEFATTR ((WS_DEFAULT_FG << 24) || (WS_DEFAULT_BG << 16)) 109 110 struct vcons_data { 111 /* usually the drivers softc */ 112 void *cookie; 113 114 /* 115 * setup the rasops part of the passed vcons_screen, like 116 * geometry, framebuffer address, font, characters, acceleration. 117 * we pass the cookie as 1st parameter 118 */ 119 void (*init_screen)(void *, struct vcons_screen *, int, 120 long *); 121 122 /* called before vcons_redraw_screen */ 123 void *show_screen_cookie; 124 void (*show_screen_cb)(struct vcons_screen *, void *); 125 126 struct vcons_screen *active; 127 struct vcons_data_private *private; 128 }; 129 130 int vcons_init(struct vcons_data *, void *, struct wsscreen_descr *, 131 struct wsdisplay_accessops *); 132 int vcons_earlyinit(struct vcons_data *, void *, struct wsscreen_descr *, 133 struct wsdisplay_accessops *); 134 135 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 136 long *); 137 138 /* completely redraw the screen, clear it if RI_FULLCLEAR is set */ 139 void vcons_redraw_screen(struct vcons_screen *); 140 141 void vcons_update_screen(struct vcons_screen *); 142 143 void vcons_replay_msgbuf(struct vcons_screen *); 144 145 void vcons_enable_polling(struct vcons_data *); 146 void vcons_disable_polling(struct vcons_data *); 147 void vcons_hard_switch(struct vcons_screen *); 148 149 int vcons_offset_to_zero(const struct vcons_screen *); 150 151 #endif /* _WSDISPLAY_VCONS_H_ */ 152
Indexes created Sat Sep 20 22:09:52 GMT 2025