wsdisplay_vconsvar.h revision 1.15
1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.15 2011/02/08 13:40:35 jmcneill 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 #include "opt_wsdisplay_compat.h" 33 #include "opt_vcons.h" 34 35 #include <sys/workqueue.h> 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 const struct wsscreen_descr *scr_type; 46 uint16_t *scr_chars; 47 long *scr_attrs; 48 long scr_defattr; 49 /* static flags set by the driver */ 50 uint32_t scr_flags; 51 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 52 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 53 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 54 * poll the busy flag when switching 55 * - for drivers that use software 56 * drawing */ 57 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 58 /* 59 * the following flags are for drivers which either can't accelerate (all) copy 60 * operations or where drawing characters is faster than the blitter 61 * for example, Sun's Creator boards can't accelerate copycols() 62 */ 63 #define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */ 64 #define VCONS_NO_COPYROWS 0x20 /* use putchar() basec copyrows() */ 65 #define VCONS_DONT_READ 0x30 /* avoid framebuffer reads */ 66 /* status flags used by vcons */ 67 uint32_t scr_status; 68 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 69 /* non zero when some rasops operation is in progress */ 70 int scr_busy; 71 #ifdef WSDISPLAY_SCROLLSUPPORT 72 int scr_lines_in_buffer; 73 int scr_current_line; 74 int scr_line_wanted; 75 int scr_offset_to_zero; 76 int scr_current_offset; 77 #endif 78 #ifdef VCONS_DRAW_INTR 79 int scr_dirty; 80 #endif 81 }; 82 83 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 84 #define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0) 85 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 86 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1) 87 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0) 88 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 89 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 90 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 91 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 92 93 struct vcons_data { 94 /* usually the drivers softc */ 95 void *cookie; 96 97 /* 98 * setup the rasops part of the passed vcons_screen, like 99 * geometry, framebuffer address, font, characters, acceleration. 100 * we pass the cookie as 1st parameter 101 */ 102 void (*init_screen)(void *, struct vcons_screen *, int, 103 long *); 104 105 /* accessops */ 106 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 107 108 /* rasops */ 109 void (*copycols)(void *, int, int, int, int); 110 void (*erasecols)(void *, int, int, int, long); 111 void (*copyrows)(void *, int, int, int); 112 void (*eraserows)(void *, int, int, long); 113 void (*putchar)(void *, int, int, u_int, long); 114 void (*cursor)(void *, int, int, int); 115 /* called before vcons_redraw_screen */ 116 void (*show_screen_cb)(struct vcons_screen *); 117 /* virtual screen management stuff */ 118 void (*switch_cb)(void *, int, int); 119 void *switch_cb_arg; 120 struct callout switch_callout; 121 uint32_t switch_pending; 122 LIST_HEAD(, vcons_screen) screens; 123 struct vcons_screen *active, *wanted; 124 const struct wsscreen_descr *currenttype; 125 int switch_poll_count; 126 #ifdef VCONS_DRAW_ASYNC 127 lwp_t *drawing_thread; 128 kmutex_t drawing_mutex; 129 kcondvar_t go_draw; /* wakeup the drawing thread */ 130 kcondvar_t go_buffer; /* wakeup anyone waiting for room in the 131 * buffer */ 132 kmutex_t go_draw_il, go_buffer_il; /* interlocks for above */ 133 int use_async; /* use async drawing when non-zero */ 134 #define VCONS_RING_BUFFER_LENGTH 2048 135 uint32_t rb_read; /* to be written by the drawing thread only */ 136 uint32_t rb_write; /* written by the async drawing methods with 137 * drawing_mutex held */ 138 uint32_t rb_buffer[VCONS_RING_BUFFER_LENGTH]; 139 #endif 140 #ifdef VCONS_DRAW_INTR 141 callout_t intr; 142 struct workqueue *intr_wq; 143 struct work wk; 144 int use_intr; /* use intr drawing when non-zero */ 145 #endif 146 }; 147 148 /* 149 * the ring buffer contains commands in the form: 150 * uint32_t command 151 * uint32_t parameters[] 152 * uint32_t command 153 * ... 154 * parameters are exactly what the corresponding rasops method would take as a 155 * series of uint32_ts, except for the cookie which is always assumed to be 156 * the active screen 157 * There should probably be a command to do vcons_redraw_screen() as a single 158 * operation, not a huge series of VCMD_PUTCHAR, Also, when we find a buffer 159 * with lots of commands in it we should probably ignore all VCMD_CURSOR except 160 * the first that removes the cursor and the last that draws it again 161 */ 162 163 #define VCMD_COPYCOLS 0x80000001 164 #define VCMD_COPYROWS 0x80000002 165 #define VCMD_ERASECOLS 0x80000003 166 #define VCMD_ERASEROWS 0x80000004 167 #define VCMD_PUTCHAR 0x80000005 168 #define VCMD_CURSOR 0x80000006 169 170 int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *, 171 struct wsdisplay_accessops *); 172 173 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 174 long *); 175 176 void vcons_redraw_screen(struct vcons_screen *); 177 178 void vcons_replay_msgbuf(struct vcons_screen *); 179 180 #endif /* _WSDISPLAY_VCONS_H_ */ 181
Indexes created Mon Sep 29 21:09:56 GMT 2025