wsdisplay_vconsvar.h revision 1.13
1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.13 2011/01/25 20:28:21 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 #include "opt_wsdisplay_compat.h" 33 #include "opt_vcons.h" 34 35 struct vcons_data; 36 37 struct vcons_screen { 38 struct rasops_info scr_ri; 39 LIST_ENTRY(vcons_screen) next; 40 void *scr_cookie; 41 struct vcons_data *scr_vd; 42 struct vcons_data *scr_origvd; 43 const struct wsscreen_descr *scr_type; 44 uint16_t *scr_chars; 45 long *scr_attrs; 46 long scr_defattr; 47 /* static flags set by the driver */ 48 uint32_t scr_flags; 49 #define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */ 50 #define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */ 51 #define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to 52 * poll the busy flag when switching 53 * - for drivers that use software 54 * drawing */ 55 #define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */ 56 /* 57 * the following flags are for drivers which either can't accelerate (all) copy 58 * operations or where drawing characters is faster than the blitter 59 * for example, Sun's Creator boards can't accelerate copycols() 60 */ 61 #define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */ 62 #define VCONS_NO_COPYROWS 0x20 /* use putchar() basec copyrows() */ 63 #define VCONS_DONT_READ 0x30 /* avoid framebuffer reads */ 64 /* status flags used by vcons */ 65 uint32_t scr_status; 66 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 67 /* non zero when some rasops operation is in progress */ 68 int scr_busy; 69 #ifdef WSDISPLAY_SCROLLSUPPORT 70 int scr_lines_in_buffer; 71 int scr_current_line; 72 int scr_line_wanted; 73 int scr_offset_to_zero; 74 int scr_current_offset; 75 #endif 76 }; 77 78 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 79 #define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0) 80 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 81 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1) 82 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0) 83 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 84 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 85 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 86 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 87 88 struct vcons_data { 89 /* usually the drivers softc */ 90 void *cookie; 91 92 /* 93 * setup the rasops part of the passed vcons_screen, like 94 * geometry, framebuffer address, font, characters, acceleration. 95 * we pass the cookie as 1st parameter 96 */ 97 void (*init_screen)(void *, struct vcons_screen *, int, 98 long *); 99 100 /* accessops */ 101 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 102 103 /* rasops */ 104 void (*copycols)(void *, int, int, int, int); 105 void (*erasecols)(void *, int, int, int, long); 106 void (*copyrows)(void *, int, int, int); 107 void (*eraserows)(void *, int, int, long); 108 void (*putchar)(void *, int, int, u_int, long); 109 void (*cursor)(void *, int, int, int); 110 /* called before vcons_redraw_screen */ 111 void (*show_screen_cb)(struct vcons_screen *); 112 /* virtual screen management stuff */ 113 void (*switch_cb)(void *, int, int); 114 void *switch_cb_arg; 115 struct callout switch_callout; 116 uint32_t switch_pending; 117 LIST_HEAD(, vcons_screen) screens; 118 struct vcons_screen *active, *wanted; 119 const struct wsscreen_descr *currenttype; 120 int switch_poll_count; 121 #ifdef VCONS_DRAW_ASYNC 122 lwp_t *drawing_thread; 123 kmutex_t drawing_mutex; 124 kcondvar_t go_draw; /* wakeup the drawing thread */ 125 kcondvar_t go_buffer; /* wakeup anyone waiting for room in the 126 * buffer */ 127 kmutex_t go_draw_il, go_buffer_il; /* interlocks for above */ 128 int use_async; /* use async drawing when non-zero */ 129 #define VCONS_RING_BUFFER_LENGTH 2048 130 uint32_t rb_read; /* to be written by the drawing thread only */ 131 uint32_t rb_write; /* written by the async drawing methods with 132 * drawing_mutex held */ 133 uint32_t rb_buffer[VCONS_RING_BUFFER_LENGTH]; 134 #endif 135 }; 136 137 /* 138 * the ring buffer contains commands in the form: 139 * uint32_t command 140 * uint32_t parameters[] 141 * uint32_t command 142 * ... 143 * parameters are exactly what the corresponding rasops method would take as a 144 * series of uint32_ts, except for the cookie which is always assumed to be 145 * the active screen 146 * There should probably be a command to do vcons_redraw_screen() as a single 147 * operation, not a huge series of VCMD_PUTCHAR, Also, when we find a buffer 148 * with lots of commands in it we should probably ignore all VCMD_CURSOR except 149 * the first that removes the cursor and the last that draws it again 150 */ 151 152 #define VCMD_COPYCOLS 0x80000001 153 #define VCMD_COPYROWS 0x80000002 154 #define VCMD_ERASECOLS 0x80000003 155 #define VCMD_ERASEROWS 0x80000004 156 #define VCMD_PUTCHAR 0x80000005 157 #define VCMD_CURSOR 0x80000006 158 159 int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *, 160 struct wsdisplay_accessops *); 161 162 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 163 long *); 164 165 void vcons_redraw_screen(struct vcons_screen *); 166 167 void vcons_replay_msgbuf(struct vcons_screen *); 168 169 #endif /* _WSDISPLAY_VCONS_H_ */ 170
Indexes created Mon Sep 29 21:09:56 GMT 2025