wsdisplay_vconsvar.h revision 1.25
1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.25 2017/05/19 19:22:33 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 * 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 struct vcons_data; 38 39 struct vcons_screen { 40 struct rasops_info scr_ri; 41 LIST_ENTRY(vcons_screen) next; 42 void *scr_cookie; 43 struct vcons_data *scr_vd; 44 struct vcons_data *scr_origvd; 45 struct wsscreen_descr *scr_type; 46 uint32_t *scr_chars; 47 long *scr_attrs; 48 void (*putchar)(void *, int, int, u_int, long); 49 long scr_defattr; 50 /* static flags set by the driver */ 51 uint32_t scr_flags; 52 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 53 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 54 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 55 * poll the busy flag when switching 56 * - for drivers that use software 57 * drawing */ 58 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 59 /* 60 * the following flags are for drivers which either can't accelerate (all) copy 61 * operations or where drawing characters is faster than the blitter 62 * for example, Sun's Creator boards can't accelerate copycols() 63 */ 64 #define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */ 65 #define VCONS_NO_COPYROWS 0x20 /* use putchar() based copyrows() */ 66 #define VCONS_DONT_READ 0x30 /* avoid framebuffer reads */ 67 #define VCONS_LOADFONT 0x40 /* driver can load_font() */ 68 /* status flags used by vcons */ 69 uint32_t scr_status; 70 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 71 /* non zero when some rasops operation is in progress */ 72 int scr_busy; 73 #ifdef WSDISPLAY_SCROLLSUPPORT 74 int scr_lines_in_buffer; 75 int scr_current_line; 76 int scr_line_wanted; 77 int scr_offset_to_zero; 78 int scr_current_offset; 79 #endif 80 #ifdef VCONS_DRAW_INTR 81 unsigned int scr_dirty; 82 #endif 83 }; 84 85 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 86 #define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0) 87 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 88 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1) 89 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0) 90 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 91 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 92 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 93 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 94 95 #define DEFATTR ((WS_DEFAULT_FG << 24) || (WS_DEFAULT_BG << 16)) 96 97 struct vcons_data { 98 /* usually the drivers softc */ 99 void *cookie; 100 101 /* 102 * setup the rasops part of the passed vcons_screen, like 103 * geometry, framebuffer address, font, characters, acceleration. 104 * we pass the cookie as 1st parameter 105 */ 106 void (*init_screen)(void *, struct vcons_screen *, int, 107 long *); 108 109 /* accessops */ 110 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 111 112 /* rasops */ 113 void (*copycols)(void *, int, int, int, int); 114 void (*erasecols)(void *, int, int, int, long); 115 void (*copyrows)(void *, int, int, int); 116 void (*eraserows)(void *, int, int, long); 117 void (*cursor)(void *, int, int, int); 118 /* called before vcons_redraw_screen */ 119 void (*show_screen_cb)(struct vcons_screen *); 120 /* virtual screen management stuff */ 121 void (*switch_cb)(void *, int, int); 122 void *switch_cb_arg; 123 struct callout switch_callout; 124 uint32_t switch_pending; 125 LIST_HEAD(, vcons_screen) screens; 126 struct vcons_screen *active, *wanted; 127 const struct wsscreen_descr *currenttype; 128 struct wsscreen_descr *defaulttype; 129 int switch_poll_count; 130 #ifdef VCONS_DRAW_INTR 131 int cells; 132 long *attrs; 133 uint32_t *chars; 134 int cursor_offset; 135 callout_t intr; 136 int intr_valid; 137 void *intr_softint; 138 int use_intr; /* use intr drawing when non-zero */ 139 #endif 140 }; 141 142 int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *, 143 struct wsdisplay_accessops *); 144 145 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 146 long *); 147 148 /* completely redraw the screen, clear it if RI_FULLCLEAR is set */ 149 void vcons_redraw_screen(struct vcons_screen *); 150 151 #ifdef VCONS_DRAW_INTR 152 /* redraw all dirty character cells */ 153 void vcons_update_screen(struct vcons_screen *); 154 void vcons_invalidate_cache(struct vcons_data *); 155 #else 156 #define vcons_update_screen vcons_redraw_screen 157 #endif 158 159 void vcons_replay_msgbuf(struct vcons_screen *); 160 161 void vcons_enable_polling(struct vcons_data *); 162 void vcons_disable_polling(struct vcons_data *); 163 void vcons_hard_switch(struct vcons_screen *); 164 165 #endif /* _WSDISPLAY_VCONS_H_ */ 166
Indexes created Mon Sep 29 21:09:56 GMT 2025