sysmouse.c revision 65129
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 * $FreeBSD: head/sys/dev/syscons/sysmouse.c 65129 2000-08-27 12:36:28Z yokota $ 27 */ 28 29#include "opt_syscons.h" 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/conf.h> 34#include <sys/proc.h> 35#include <sys/random.h> 36#include <sys/tty.h> 37#include <sys/kernel.h> 38 39#include <machine/console.h> 40#include <machine/mouse.h> 41 42#include <dev/syscons/syscons.h> 43 44#ifndef SC_NO_SYSMOUSE 45 46#define CDEV_MAJOR 12 /* major number, shared with syscons */ 47#define SC_MOUSE 128 /* minor number */ 48 49static d_open_t smopen; 50static d_close_t smclose; 51static d_ioctl_t smioctl; 52 53static struct cdevsw sm_cdevsw = { 54 /* open */ smopen, 55 /* close */ smclose, 56 /* read */ ttyread, 57 /* write */ nowrite, 58 /* ioctl */ smioctl, 59 /* poll */ ttypoll, 60 /* mmap */ nommap, 61 /* strategy */ nostrategy, 62 /* name */ "sysmouse", 63 /* maj */ CDEV_MAJOR, 64 /* dump */ nodump, 65 /* psize */ nopsize, 66 /* flags */ D_TTY, 67 /* bmaj */ -1 68}; 69 70/* local variables */ 71static struct tty *sysmouse_tty; 72static int mouse_level; /* sysmouse protocol level */ 73static mousestatus_t mouse_status; 74 75static void smstart(struct tty *tp); 76static int smparam(struct tty *tp, struct termios *t); 77 78static int 79smopen(dev_t dev, int flag, int mode, struct proc *p) 80{ 81 struct tty *tp; 82 83 DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n", 84 major(dev), minor(dev), SC_VTY(dev))); 85 86#if 0 87 if (SC_VTY(dev) != SC_MOUSE) 88 return ENXIO; 89#endif 90 91 tp = dev->si_tty = ttymalloc(dev->si_tty); 92 if (!(tp->t_state & TS_ISOPEN)) { 93 tp->t_oproc = smstart; 94 tp->t_param = smparam; 95 tp->t_stop = nottystop; 96 tp->t_dev = dev; 97 ttychars(tp); 98 tp->t_iflag = TTYDEF_IFLAG; 99 tp->t_oflag = TTYDEF_OFLAG; 100 tp->t_cflag = TTYDEF_CFLAG; 101 tp->t_lflag = TTYDEF_LFLAG; 102 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 103 smparam(tp, &tp->t_termios); 104 (*linesw[tp->t_line].l_modem)(tp, 1); 105 } else if (tp->t_state & TS_XCLUDE && suser(p)) { 106 return EBUSY; 107 } 108 109 return (*linesw[tp->t_line].l_open)(dev, tp); 110} 111 112static int 113smclose(dev_t dev, int flag, int mode, struct proc *p) 114{ 115 struct tty *tp; 116 int s; 117 118 tp = dev->si_tty; 119 s = spltty(); 120 mouse_level = 0; 121 (*linesw[tp->t_line].l_close)(tp, flag); 122 ttyclose(tp); 123 splx(s); 124 125 return 0; 126} 127 128static void 129smstart(struct tty *tp) 130{ 131 struct clist *rbp; 132 u_char buf[PCBURST]; 133 int s; 134 135 s = spltty(); 136 if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) { 137 tp->t_state |= TS_BUSY; 138 rbp = &tp->t_outq; 139 while (rbp->c_cc) 140 q_to_b(rbp, buf, PCBURST); 141 tp->t_state &= ~TS_BUSY; 142 ttwwakeup(tp); 143 } 144 splx(s); 145} 146 147static int 148smparam(struct tty *tp, struct termios *t) 149{ 150 tp->t_ispeed = t->c_ispeed; 151 tp->t_ospeed = t->c_ospeed; 152 tp->t_cflag = t->c_cflag; 153 return 0; 154} 155 156static int 157smioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 158{ 159 struct tty *tp; 160 mousehw_t *hw; 161 mousemode_t *mode; 162 int error; 163 int s; 164 165 tp = dev->si_tty; 166 switch (cmd) { 167 168 case MOUSE_GETHWINFO: /* get device information */ 169 hw = (mousehw_t *)data; 170 hw->buttons = 10; /* XXX unknown */ 171 hw->iftype = MOUSE_IF_SYSMOUSE; 172 hw->type = MOUSE_MOUSE; 173 hw->model = MOUSE_MODEL_GENERIC; 174 hw->hwid = 0; 175 return 0; 176 177 case MOUSE_GETMODE: /* get protocol/mode */ 178 mode = (mousemode_t *)data; 179 mode->level = mouse_level; 180 switch (mode->level) { 181 case 0: /* emulate MouseSystems protocol */ 182 mode->protocol = MOUSE_PROTO_MSC; 183 mode->rate = -1; /* unknown */ 184 mode->resolution = -1; /* unknown */ 185 mode->accelfactor = 0; /* disabled */ 186 mode->packetsize = MOUSE_MSC_PACKETSIZE; 187 mode->syncmask[0] = MOUSE_MSC_SYNCMASK; 188 mode->syncmask[1] = MOUSE_MSC_SYNC; 189 break; 190 191 case 1: /* sysmouse protocol */ 192 mode->protocol = MOUSE_PROTO_SYSMOUSE; 193 mode->rate = -1; 194 mode->resolution = -1; 195 mode->accelfactor = 0; 196 mode->packetsize = MOUSE_SYS_PACKETSIZE; 197 mode->syncmask[0] = MOUSE_SYS_SYNCMASK; 198 mode->syncmask[1] = MOUSE_SYS_SYNC; 199 break; 200 } 201 return 0; 202 203 case MOUSE_SETMODE: /* set protocol/mode */ 204 mode = (mousemode_t *)data; 205 if (mode->level == -1) 206 ; /* don't change the current setting */ 207 else if ((mode->level < 0) || (mode->level > 1)) 208 return EINVAL; 209 else 210 mouse_level = mode->level; 211 return 0; 212 213 case MOUSE_GETLEVEL: /* get operation level */ 214 *(int *)data = mouse_level; 215 return 0; 216 217 case MOUSE_SETLEVEL: /* set operation level */ 218 if ((*(int *)data < 0) || (*(int *)data > 1)) 219 return EINVAL; 220 mouse_level = *(int *)data; 221 return 0; 222 223 case MOUSE_GETSTATUS: /* get accumulated mouse events */ 224 s = spltty(); 225 *(mousestatus_t *)data = mouse_status; 226 mouse_status.flags = 0; 227 mouse_status.obutton = mouse_status.button; 228 mouse_status.dx = 0; 229 mouse_status.dy = 0; 230 mouse_status.dz = 0; 231 splx(s); 232 return 0; 233 234#if notyet 235 case MOUSE_GETVARS: /* get internal mouse variables */ 236 case MOUSE_SETVARS: /* set internal mouse variables */ 237 return ENODEV; 238#endif 239 240 case MOUSE_READSTATE: /* read status from the device */ 241 case MOUSE_READDATA: /* read data from the device */ 242 return ENODEV; 243 } 244 245 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 246 if (error != ENOIOCTL) 247 return error; 248 error = ttioctl(tp, cmd, data, flag); 249 if (error != ENOIOCTL) 250 return error; 251 return ENOTTY; 252} 253 254static void 255sm_attach_mouse(void *unused) 256{ 257 dev_t dev; 258 259 dev = make_dev(&sm_cdevsw, SC_MOUSE, UID_ROOT, GID_WHEEL, 0600, 260 "sysmouse"); 261 dev->si_tty = sysmouse_tty = ttymalloc(sysmouse_tty); 262 /* sysmouse doesn't have scr_stat */ 263} 264 265SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, 266 sm_attach_mouse, NULL) 267 268int 269sysmouse_event(mouse_info_t *info) 270{ 271 /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */ 272 static int butmap[8] = { 273 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 274 MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 275 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP, 276 MOUSE_MSC_BUTTON3UP, 277 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP, 278 MOUSE_MSC_BUTTON2UP, 279 MOUSE_MSC_BUTTON1UP, 280 0, 281 }; 282 u_char buf[8]; 283 int x, y, z; 284 int i; 285 286 switch (info->operation) { 287 case MOUSE_ACTION: 288 mouse_status.button = info->u.data.buttons; 289 /* FALL THROUGH */ 290 case MOUSE_MOTION_EVENT: 291 x = info->u.data.x; 292 y = info->u.data.y; 293 z = info->u.data.z; 294 break; 295 case MOUSE_BUTTON_EVENT: 296 x = y = z = 0; 297 if (info->u.event.value > 0) 298 mouse_status.button |= info->u.event.id; 299 else 300 mouse_status.button &= ~info->u.event.id; 301 break; 302 default: 303 return 0; 304 } 305 306 mouse_status.dx += x; 307 mouse_status.dy += y; 308 mouse_status.dz += z; 309 mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0) 310 | (mouse_status.obutton ^ mouse_status.button); 311 if (mouse_status.flags == 0) 312 return 0; 313 314 if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN)) 315 return mouse_status.flags; 316 317 /* the first five bytes are compatible with MouseSystems' */ 318 buf[0] = MOUSE_MSC_SYNC 319 | butmap[mouse_status.button & MOUSE_STDBUTTONS]; 320 x = imax(imin(x, 255), -256); 321 buf[1] = x >> 1; 322 buf[3] = x - buf[1]; 323 y = -imax(imin(y, 255), -256); 324 buf[2] = y >> 1; 325 buf[4] = y - buf[2]; 326 for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i) 327 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty); 328 if (mouse_level >= 1) { 329 /* extended part */ 330 z = imax(imin(z, 127), -128); 331 buf[5] = (z >> 1) & 0x7f; 332 buf[6] = (z - (z >> 1)) & 0x7f; 333 /* buttons 4-10 */ 334 buf[7] = (~mouse_status.button >> 3) & 0x7f; 335 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i) 336 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], 337 sysmouse_tty); 338 } 339 340 random_harvest(buf, sizeof(buf), 2, 0, RANDOM_MOUSE); 341 342 return mouse_status.flags; 343} 344 345#endif /* !SC_NO_SYSMOUSE */ 346