sysmouse.c revision 268366
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 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 as 10 * the first lines of this file unmodified. 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: stable/10/sys/dev/syscons/sysmouse.c 268366 2014-07-07 14:16:05Z ray $"); 30 31#include "opt_syscons.h" 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/priv.h> 36#include <sys/serial.h> 37#include <sys/tty.h> 38#include <sys/ttydefaults.h> 39#include <sys/kernel.h> 40#include <sys/cons.h> 41#include <sys/consio.h> 42#include <sys/mouse.h> 43 44#include <dev/syscons/syscons.h> 45 46#ifndef SC_NO_SYSMOUSE 47 48/* local variables */ 49static struct tty *sysmouse_tty; 50static int mouse_level; /* sysmouse protocol level */ 51static mousestatus_t mouse_status; 52 53static void 54smdev_close(struct tty *tp) 55{ 56 mouse_level = 0; 57} 58 59static int 60smdev_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td) 61{ 62 mousehw_t *hw; 63 mousemode_t *mode; 64 65 switch (cmd) { 66 67 case MOUSE_GETHWINFO: /* get device information */ 68 hw = (mousehw_t *)data; 69 hw->buttons = 10; /* XXX unknown */ 70 hw->iftype = MOUSE_IF_SYSMOUSE; 71 hw->type = MOUSE_MOUSE; 72 hw->model = MOUSE_MODEL_GENERIC; 73 hw->hwid = 0; 74 return 0; 75 76 case MOUSE_GETMODE: /* get protocol/mode */ 77 mode = (mousemode_t *)data; 78 mode->level = mouse_level; 79 switch (mode->level) { 80 case 0: /* emulate MouseSystems protocol */ 81 mode->protocol = MOUSE_PROTO_MSC; 82 mode->rate = -1; /* unknown */ 83 mode->resolution = -1; /* unknown */ 84 mode->accelfactor = 0; /* disabled */ 85 mode->packetsize = MOUSE_MSC_PACKETSIZE; 86 mode->syncmask[0] = MOUSE_MSC_SYNCMASK; 87 mode->syncmask[1] = MOUSE_MSC_SYNC; 88 break; 89 90 case 1: /* sysmouse protocol */ 91 mode->protocol = MOUSE_PROTO_SYSMOUSE; 92 mode->rate = -1; 93 mode->resolution = -1; 94 mode->accelfactor = 0; 95 mode->packetsize = MOUSE_SYS_PACKETSIZE; 96 mode->syncmask[0] = MOUSE_SYS_SYNCMASK; 97 mode->syncmask[1] = MOUSE_SYS_SYNC; 98 break; 99 } 100 return 0; 101 102 case MOUSE_SETMODE: /* set protocol/mode */ 103 mode = (mousemode_t *)data; 104 if (mode->level == -1) 105 ; /* don't change the current setting */ 106 else if ((mode->level < 0) || (mode->level > 1)) 107 return EINVAL; 108 else 109 mouse_level = mode->level; 110 return 0; 111 112 case MOUSE_GETLEVEL: /* get operation level */ 113 *(int *)data = mouse_level; 114 return 0; 115 116 case MOUSE_SETLEVEL: /* set operation level */ 117 if ((*(int *)data < 0) || (*(int *)data > 1)) 118 return EINVAL; 119 mouse_level = *(int *)data; 120 return 0; 121 122 case MOUSE_GETSTATUS: /* get accumulated mouse events */ 123 *(mousestatus_t *)data = mouse_status; 124 mouse_status.flags = 0; 125 mouse_status.obutton = mouse_status.button; 126 mouse_status.dx = 0; 127 mouse_status.dy = 0; 128 mouse_status.dz = 0; 129 return 0; 130 131#ifdef notyet 132 case MOUSE_GETVARS: /* get internal mouse variables */ 133 case MOUSE_SETVARS: /* set internal mouse variables */ 134 return ENODEV; 135#endif 136 137 case MOUSE_READSTATE: /* read status from the device */ 138 case MOUSE_READDATA: /* read data from the device */ 139 return ENODEV; 140 } 141 142 return (ENOIOCTL); 143} 144 145static int 146smdev_param(struct tty *tp, struct termios *t) 147{ 148 149 /* 150 * Set the output baud rate to zero. The mouse device supports 151 * no output, so we don't want to waste buffers. 152 */ 153 t->c_ispeed = TTYDEF_SPEED; 154 t->c_ospeed = B0; 155 156 return (0); 157} 158 159static struct ttydevsw smdev_ttydevsw = { 160 .tsw_flags = TF_NOPREFIX, 161 .tsw_close = smdev_close, 162 .tsw_ioctl = smdev_ioctl, 163 .tsw_param = smdev_param, 164}; 165 166static void 167sm_attach_mouse(void *unused) 168{ 169 if (!vty_enabled(VTY_SC)) 170 return; 171 sysmouse_tty = tty_alloc(&smdev_ttydevsw, NULL); 172 tty_makedev(sysmouse_tty, NULL, "sysmouse"); 173} 174 175SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sm_attach_mouse, NULL); 176 177int 178sysmouse_event(mouse_info_t *info) 179{ 180 /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */ 181 static int butmap[8] = { 182 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 183 MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 184 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP, 185 MOUSE_MSC_BUTTON3UP, 186 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP, 187 MOUSE_MSC_BUTTON2UP, 188 MOUSE_MSC_BUTTON1UP, 189 0, 190 }; 191 u_char buf[8]; 192 int x, y, z; 193 int i, flags = 0; 194 195 tty_lock(sysmouse_tty); 196 197 switch (info->operation) { 198 case MOUSE_ACTION: 199 mouse_status.button = info->u.data.buttons; 200 /* FALL THROUGH */ 201 case MOUSE_MOTION_EVENT: 202 x = info->u.data.x; 203 y = info->u.data.y; 204 z = info->u.data.z; 205 break; 206 case MOUSE_BUTTON_EVENT: 207 x = y = z = 0; 208 if (info->u.event.value > 0) 209 mouse_status.button |= info->u.event.id; 210 else 211 mouse_status.button &= ~info->u.event.id; 212 break; 213 default: 214 goto done; 215 } 216 217 mouse_status.dx += x; 218 mouse_status.dy += y; 219 mouse_status.dz += z; 220 mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0) 221 | (mouse_status.obutton ^ mouse_status.button); 222 flags = mouse_status.flags; 223 if (flags == 0 || !tty_opened(sysmouse_tty)) 224 goto done; 225 226 /* the first five bytes are compatible with MouseSystems' */ 227 buf[0] = MOUSE_MSC_SYNC 228 | butmap[mouse_status.button & MOUSE_STDBUTTONS]; 229 x = imax(imin(x, 255), -256); 230 buf[1] = x >> 1; 231 buf[3] = x - buf[1]; 232 y = -imax(imin(y, 255), -256); 233 buf[2] = y >> 1; 234 buf[4] = y - buf[2]; 235 for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i) 236 ttydisc_rint(sysmouse_tty, buf[i], 0); 237 if (mouse_level >= 1) { 238 /* extended part */ 239 z = imax(imin(z, 127), -128); 240 buf[5] = (z >> 1) & 0x7f; 241 buf[6] = (z - (z >> 1)) & 0x7f; 242 /* buttons 4-10 */ 243 buf[7] = (~mouse_status.button >> 3) & 0x7f; 244 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i) 245 ttydisc_rint(sysmouse_tty, buf[i], 0); 246 } 247 ttydisc_rint_done(sysmouse_tty); 248 249done: tty_unlock(sysmouse_tty); 250 return (flags); 251} 252 253#endif /* !SC_NO_SYSMOUSE */ 254