1 /*- 2 * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/modules/syscons/warp/warp_saver.c,v 1.7.2.1 2000/05/10 16:26:47 obrien Exp $ 29 * $DragonFly: src/sys/dev/misc/syscons/warp/warp_saver.c,v 1.4 2005/06/11 00:26:51 dillon Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/syslog.h> 37 #include <sys/consio.h> 38 #include <sys/fbio.h> 39 #include <sys/random.h> 40 #include <sys/thread2.h> 41 42 #include <dev/video/fb/fbreg.h> 43 #include <dev/video/fb/splashreg.h> 44 #include "../syscons.h" 45 46 static u_char *vid; 47 static int blanked; 48 49 #define SCRW 320 50 #define SCRH 200 51 #define SPP 15 52 #define STARS (SPP*(1+2+4+8)) 53 54 static int star[STARS]; 55 static u_char warp_pal[768] = { 56 0x00, 0x00, 0x00, 57 0x66, 0x66, 0x66, 58 0x99, 0x99, 0x99, 59 0xcc, 0xcc, 0xcc, 60 0xff, 0xff, 0xff 61 /* the rest is zero-filled by the compiler */ 62 }; 63 64 static void 65 warp_update(void) 66 { 67 int i, j, k, n; 68 69 for (i = 1, k = 0, n = SPP*8; i < 5; i++, n /= 2) 70 for (j = 0; j < n; j++, k++) { 71 vid[star[k]] = 0; 72 star[k] += i; 73 if (star[k] > SCRW*SCRH) 74 star[k] -= SCRW*SCRH; 75 vid[star[k]] = i; 76 } 77 } 78 79 static int 80 warp_saver(video_adapter_t *adp, int blank) 81 { 82 if (blank) { 83 /* switch to graphics mode */ 84 if (blanked <= 0) { 85 crit_enter(); 86 set_video_mode(adp, M_VGA_CG320); 87 load_palette(adp, warp_pal); 88 #if 0 /* XXX conflict */ 89 set_border(adp, 0); 90 #endif 91 blanked++; 92 vid = (u_char *)adp->va_window; 93 crit_exit(); 94 bzero(vid, SCRW*SCRH); 95 } 96 97 /* update display */ 98 warp_update(); 99 100 } else { 101 blanked = 0; 102 } 103 return 0; 104 } 105 106 static int 107 warp_init(video_adapter_t *adp) 108 { 109 video_info_t info; 110 int i; 111 112 /* check that the console is capable of running in 320x200x256 */ 113 if (get_mode_info(adp, M_VGA_CG320, &info)) { 114 log(LOG_NOTICE, "warp_saver: the console does not support M_VGA_CG320\n"); 115 return ENODEV; 116 } 117 118 /* randomize the star field */ 119 for (i = 0; i < STARS; i++) { 120 star[i] = random() % (SCRW*SCRH); 121 } 122 123 blanked = 0; 124 125 return 0; 126 } 127 128 static int 129 warp_term(video_adapter_t *adp) 130 { 131 return 0; 132 } 133 134 static scrn_saver_t warp_module = { 135 "warp_saver", warp_init, warp_term, warp_saver, NULL, 136 }; 137 138 SAVER_MODULE(warp_saver, warp_module); 139