wsdisplay_vconsvar.h revision 1.32
1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.32 2022/07/17 10:28:09 riastradh 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 struct vcons_data; 40 41 struct vcons_screen { 42 struct rasops_info scr_ri; 43 LIST_ENTRY(vcons_screen) next; 44 void *scr_cookie; 45 struct vcons_data *scr_vd; 46 struct vcons_data *scr_origvd; 47 struct wsscreen_descr *scr_type; 48 uint32_t *scr_chars; 49 long *scr_attrs; 50 void (*putchar)(void *, int, int, u_int, long); 51 long scr_defattr; 52 /* static flags set by the driver */ 53 uint32_t scr_flags; 54 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 55 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 56 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 57 * poll the busy flag when switching 58 * - for drivers that use software 59 * drawing */ 60 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 61 /* 62 * the following flags are for drivers which either can't accelerate (all) copy 63 * operations or where drawing characters is faster than the blitter 64 * for example, Sun's Creator boards can't accelerate copycols() 65 */ 66 #define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */ 67 #define VCONS_NO_COPYROWS 0x20 /* use putchar() based copyrows() */ 68 #define VCONS_DONT_READ (VCONS_NO_COPYCOLS|VCONS_NO_COPYROWS|VCONS_NO_CURSOR) 69 /* avoid framebuffer reads */ 70 #define VCONS_LOADFONT 0x40 /* driver can load_font() */ 71 #define VCONS_NO_CURSOR 0x80 /* use putchar() based cursor(), to 72 * avoid fb reads */ 73 /* status flags used by vcons */ 74 uint32_t scr_status; 75 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 76 /* non zero when some rasops operation is in progress */ 77 int scr_busy; 78 #ifdef WSDISPLAY_SCROLLSUPPORT 79 int scr_lines_in_buffer; 80 int scr_current_line; 81 int scr_line_wanted; 82 int scr_offset_to_zero; 83 int scr_current_offset; 84 #endif 85 #ifdef VCONS_DRAW_INTR 86 unsigned int scr_dirty; 87 #endif 88 }; 89 90 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 91 #define SCREEN_IS_BUSY(scr) (membar_consumer(), (scr)->scr_busy != 0) 92 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 93 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1, membar_producer()) 94 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0, membar_producer()) 95 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 96 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 97 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 98 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 99 100 #define DEFATTR ((WS_DEFAULT_FG << 24) || (WS_DEFAULT_BG << 16)) 101 102 struct vcons_data { 103 /* usually the drivers softc */ 104 void *cookie; 105 106 /* 107 * setup the rasops part of the passed vcons_screen, like 108 * geometry, framebuffer address, font, characters, acceleration. 109 * we pass the cookie as 1st parameter 110 */ 111 void (*init_screen)(void *, struct vcons_screen *, int, 112 long *); 113 114 /* accessops */ 115 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 116 117 /* rasops */ 118 void (*copycols)(void *, int, int, int, int); 119 void (*erasecols)(void *, int, int, int, long); 120 void (*copyrows)(void *, int, int, int); 121 void (*eraserows)(void *, int, int, long); 122 void (*cursor)(void *, int, int, int); 123 /* called before vcons_redraw_screen */ 124 void *show_screen_cookie; 125 void (*show_screen_cb)(struct vcons_screen *, void *); 126 /* virtual screen management stuff */ 127 void (*switch_cb)(void *, int, int); 128 void *switch_cb_arg; 129 struct callout switch_callout; 130 uint32_t switch_pending; 131 LIST_HEAD(, vcons_screen) screens; 132 struct vcons_screen *active, *wanted; 133 const struct wsscreen_descr *currenttype; 134 struct wsscreen_descr *defaulttype; 135 int switch_poll_count; 136 #ifdef VCONS_DRAW_INTR 137 int cells; 138 long *attrs; 139 uint32_t *chars; 140 int cursor_offset; 141 callout_t intr; 142 int intr_valid; 143 void *intr_softint; 144 int use_intr; /* use intr drawing when non-zero */ 145 #endif 146 }; 147 148 int vcons_init(struct vcons_data *, void *, struct wsscreen_descr *, 149 struct wsdisplay_accessops *); 150 int vcons_earlyinit(struct vcons_data *, void *, struct wsscreen_descr *, 151 struct wsdisplay_accessops *); 152 153 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 154 long *); 155 156 /* completely redraw the screen, clear it if RI_FULLCLEAR is set */ 157 void vcons_redraw_screen(struct vcons_screen *); 158 159 #ifdef VCONS_DRAW_INTR 160 /* redraw all dirty character cells */ 161 void vcons_update_screen(struct vcons_screen *); 162 void vcons_invalidate_cache(struct vcons_data *); 163 #else 164 #define vcons_update_screen vcons_redraw_screen 165 #endif 166 167 void vcons_replay_msgbuf(struct vcons_screen *); 168 169 void vcons_enable_polling(struct vcons_data *); 170 void vcons_disable_polling(struct vcons_data *); 171 void vcons_hard_switch(struct vcons_screen *); 172 173 static inline int 174 vcons_offset_to_zero(const struct vcons_screen *scr) 175 { 176 #ifdef WSDISPLAY_SCROLLSUPPORT 177 return scr->scr_offset_to_zero; 178 #else 179 return 0; 180 #endif 181 } 182 183 #endif /* _WSDISPLAY_VCONS_H_ */ 184
Indexes created Sun Sep 28 16:09:52 GMT 2025