1 /* $NetBSD: wsdisplay_vconsvar.h,v 1.9 2008/04/28 20:24:01 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 #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 /* status flags used by vcons */ 57 uint32_t scr_status; 58 #define VCONS_IS_VISIBLE 1 /* this screen is currently visible */ 59 /* non zero when some rasops operation is in progress */ 60 int scr_busy; 61 #ifdef WSDISPLAY_SCROLLSUPPORT 62 int scr_lines_in_buffer; 63 int scr_current_line; 64 int scr_line_wanted; 65 int scr_offset_to_zero; 66 int scr_current_offset; 67 #endif 68 }; 69 70 #define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0) 71 #define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0) 72 #define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0) 73 #define SCREEN_BUSY(scr) ((scr)->scr_busy = 1) 74 #define SCREEN_IDLE(scr) ((scr)->scr_busy = 0) 75 #define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE) 76 #define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE) 77 #define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW) 78 #define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW) 79 80 struct vcons_data { 81 /* usually the drivers softc */ 82 void *cookie; 83 84 /* 85 * setup the rasops part of the passed vcons_screen, like 86 * geometry, framebuffer address, font, characters, acceleration. 87 * we pass the cookie as 1st parameter 88 */ 89 void (*init_screen)(void *, struct vcons_screen *, int, 90 long *); 91 92 /* accessops */ 93 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *); 94 95 /* rasops */ 96 void (*copycols)(void *, int, int, int, int); 97 void (*erasecols)(void *, int, int, int, long); 98 void (*copyrows)(void *, int, int, int); 99 void (*eraserows)(void *, int, int, long); 100 void (*putchar)(void *, int, int, u_int, long); 101 void (*cursor)(void *, int, int, int); 102 /* called before vcons_redraw_screen */ 103 void (*show_screen_cb)(struct vcons_screen *); 104 /* virtual screen management stuff */ 105 void (*switch_cb)(void *, int, int); 106 void *switch_cb_arg; 107 #ifdef VCONS_SWITCH_ASYNC 108 lwp_t *redraw_thread; 109 int start_drawing, done_drawing; /* for the drawing thread */ 110 #endif 111 struct callout switch_callout; 112 uint32_t switch_pending; 113 LIST_HEAD(, vcons_screen) screens; 114 struct vcons_screen *active, *wanted; 115 const struct wsscreen_descr *currenttype; 116 int switch_poll_count; 117 }; 118 119 int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *, 120 struct wsdisplay_accessops *); 121 122 int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int, 123 long *); 124 125 void vcons_redraw_screen(struct vcons_screen *); 126 127 128 129 #endif /* _WSDISPLAY_VCONS_H_ */ 130