1 /*- 2 * (MPSAFE) 3 * 4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 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 as 12 * the first lines of this file unmodified. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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/dev/syscons/sysmouse.c,v 1.2.2.2 2001/07/16 05:21:24 yokota Exp $ 29 */ 30 31 /* MPSAFE NOTE: This file uses the tty_token mostly for the linesw access and 32 * for the internal mouse structures. The latter ones could be protected 33 * by a local lock. 34 */ 35 #include "opt_syscons.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/conf.h> 40 #include <sys/proc.h> 41 #include <sys/priv.h> 42 #include <sys/tty.h> 43 #include <sys/kernel.h> 44 #include <sys/thread2.h> 45 46 #include <machine/console.h> 47 #include <sys/mouse.h> 48 49 #include "syscons.h" 50 51 #ifndef SC_NO_SYSMOUSE 52 53 #define CDEV_MAJOR 12 /* major number, shared with syscons */ 54 #define SC_MOUSE 128 /* minor number */ 55 56 static d_open_t smopen; 57 static d_close_t smclose; 58 static d_ioctl_t smioctl; 59 60 static struct dev_ops sm_ops = { 61 { "sysmouse", 0, D_TTY }, 62 .d_open = smopen, 63 .d_close = smclose, 64 .d_read = ttyread, 65 .d_ioctl = smioctl, 66 .d_kqfilter = ttykqfilter, 67 .d_revoke = ttyrevoke 68 }; 69 70 /* local variables */ 71 static struct tty *sysmouse_tty; 72 static int mouse_level; /* sysmouse protocol level */ 73 static mousestatus_t mouse_status; 74 75 static void smstart(struct tty *tp); 76 static int smparam(struct tty *tp, struct termios *t); 77 78 static int 79 smopen(struct dev_open_args *ap) 80 { 81 cdev_t dev = ap->a_head.a_dev; 82 struct tty *tp; 83 int ret; 84 85 DPRINTF(5, ("smopen: dev:%d,%d, vty:%d\n", 86 major(dev), minor(dev), SC_VTY(dev))); 87 88 #if 0 89 if (SC_VTY(dev) != SC_MOUSE) 90 return ENXIO; 91 #endif 92 93 lwkt_gettoken(&tty_token); 94 tp = dev->si_tty = ttymalloc(dev->si_tty); 95 if (!(tp->t_state & TS_ISOPEN)) { 96 sysmouse_tty = tp; 97 tp->t_oproc = smstart; 98 tp->t_param = smparam; 99 tp->t_stop = nottystop; 100 tp->t_dev = dev; 101 ttychars(tp); 102 tp->t_iflag = 0; 103 tp->t_oflag = 0; 104 tp->t_lflag = 0; 105 tp->t_cflag = TTYDEF_CFLAG; 106 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 107 smparam(tp, &tp->t_termios); 108 (*linesw[tp->t_line].l_modem)(tp, 1); 109 } else if (tp->t_state & TS_XCLUDE && priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) { 110 lwkt_reltoken(&tty_token); 111 return EBUSY; 112 } 113 114 ret = (*linesw[tp->t_line].l_open)(dev, tp); 115 lwkt_reltoken(&tty_token); 116 return ret; 117 } 118 119 static int 120 smclose(struct dev_close_args *ap) 121 { 122 cdev_t dev = ap->a_head.a_dev; 123 struct tty *tp; 124 125 tp = dev->si_tty; 126 crit_enter(); 127 lwkt_gettoken(&tty_token); 128 mouse_level = 0; 129 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag); 130 ttyclose(tp); 131 lwkt_reltoken(&tty_token); 132 crit_exit(); 133 134 return 0; 135 } 136 137 static void 138 smstart(struct tty *tp) 139 { 140 struct clist *rbp; 141 u_char buf[PCBURST]; 142 143 crit_enter(); 144 lwkt_gettoken(&tty_token); 145 if (!(tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))) { 146 tp->t_state |= TS_BUSY; 147 rbp = &tp->t_outq; 148 while (rbp->c_cc) 149 q_to_b(rbp, buf, PCBURST); 150 tp->t_state &= ~TS_BUSY; 151 ttwwakeup(tp); 152 } 153 lwkt_reltoken(&tty_token); 154 crit_exit(); 155 } 156 157 static int 158 smparam(struct tty *tp, struct termios *t) 159 { 160 lwkt_gettoken(&tty_token); 161 tp->t_ispeed = t->c_ispeed; 162 tp->t_ospeed = t->c_ospeed; 163 tp->t_cflag = t->c_cflag; 164 lwkt_reltoken(&tty_token); 165 return 0; 166 } 167 168 static int 169 smioctl(struct dev_ioctl_args *ap) 170 { 171 cdev_t dev = ap->a_head.a_dev; 172 struct tty *tp; 173 mousehw_t *hw; 174 mousemode_t *mode; 175 int error; 176 177 lwkt_gettoken(&tty_token); 178 tp = dev->si_tty; 179 180 switch (ap->a_cmd) { 181 case MOUSE_GETHWINFO: /* get device information */ 182 hw = (mousehw_t *)ap->a_data; 183 hw->buttons = 10; /* XXX unknown */ 184 hw->iftype = MOUSE_IF_SYSMOUSE; 185 hw->type = MOUSE_MOUSE; 186 hw->model = MOUSE_MODEL_GENERIC; 187 hw->hwid = 0; 188 lwkt_reltoken(&tty_token); 189 return 0; 190 191 case MOUSE_GETMODE: /* get protocol/mode */ 192 mode = (mousemode_t *)ap->a_data; 193 mode->level = mouse_level; 194 switch (mode->level) { 195 case 0: /* emulate MouseSystems protocol */ 196 mode->protocol = MOUSE_PROTO_MSC; 197 mode->rate = -1; /* unknown */ 198 mode->resolution = -1; /* unknown */ 199 mode->accelfactor = 0; /* disabled */ 200 mode->packetsize = MOUSE_MSC_PACKETSIZE; 201 mode->syncmask[0] = MOUSE_MSC_SYNCMASK; 202 mode->syncmask[1] = MOUSE_MSC_SYNC; 203 break; 204 205 case 1: /* sysmouse protocol */ 206 mode->protocol = MOUSE_PROTO_SYSMOUSE; 207 mode->rate = -1; 208 mode->resolution = -1; 209 mode->accelfactor = 0; 210 mode->packetsize = MOUSE_SYS_PACKETSIZE; 211 mode->syncmask[0] = MOUSE_SYS_SYNCMASK; 212 mode->syncmask[1] = MOUSE_SYS_SYNC; 213 break; 214 } 215 lwkt_reltoken(&tty_token); 216 return 0; 217 218 case MOUSE_SETMODE: /* set protocol/mode */ 219 mode = (mousemode_t *)ap->a_data; 220 if (mode->level == -1) 221 ; /* don't change the current setting */ 222 else if ((mode->level < 0) || (mode->level > 1)) { 223 lwkt_reltoken(&tty_token); 224 return EINVAL; 225 } else { 226 mouse_level = mode->level; 227 } 228 lwkt_reltoken(&tty_token); 229 return 0; 230 231 case MOUSE_GETLEVEL: /* get operation level */ 232 *(int *)ap->a_data = mouse_level; 233 lwkt_reltoken(&tty_token); 234 return 0; 235 236 case MOUSE_SETLEVEL: /* set operation level */ 237 if ((*(int *)ap->a_data < 0) || (*(int *)ap->a_data > 1)) { 238 lwkt_reltoken(&tty_token); 239 return EINVAL; 240 } 241 mouse_level = *(int *)ap->a_data; 242 lwkt_reltoken(&tty_token); 243 return 0; 244 245 case MOUSE_GETSTATUS: /* get accumulated mouse events */ 246 crit_enter(); 247 *(mousestatus_t *)ap->a_data = mouse_status; 248 mouse_status.flags = 0; 249 mouse_status.obutton = mouse_status.button; 250 mouse_status.dx = 0; 251 mouse_status.dy = 0; 252 mouse_status.dz = 0; 253 crit_exit(); 254 lwkt_reltoken(&tty_token); 255 return 0; 256 257 #if 0 /* notyet */ 258 case MOUSE_GETVARS: /* get internal mouse variables */ 259 case MOUSE_SETVARS: /* set internal mouse variables */ 260 lwkt_reltoken(&tty_token); 261 return ENODEV; 262 #endif 263 264 case MOUSE_READSTATE: /* read status from the device */ 265 case MOUSE_READDATA: /* read data from the device */ 266 lwkt_reltoken(&tty_token); 267 return ENODEV; 268 } 269 270 error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred); 271 if (error != ENOIOCTL) { 272 lwkt_reltoken(&tty_token); 273 return error; 274 } 275 error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag); 276 if (error != ENOIOCTL) { 277 lwkt_reltoken(&tty_token); 278 return error; 279 } 280 lwkt_reltoken(&tty_token); 281 return ENOTTY; 282 } 283 284 static void 285 sm_attach_mouse(void *unused) 286 { 287 cdev_t dev; 288 289 dev = make_dev(&sm_ops, SC_MOUSE, UID_ROOT, GID_WHEEL, 290 0600, "sysmouse"); 291 /* sysmouse doesn't have scr_stat */ 292 } 293 294 SYSINIT(sysmouse, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, 295 sm_attach_mouse, NULL); 296 297 int 298 sysmouse_event(mouse_info_t *info) 299 { 300 /* MOUSE_BUTTON?DOWN -> MOUSE_MSC_BUTTON?UP */ 301 static int butmap[8] = { 302 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 303 MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP, 304 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP, 305 MOUSE_MSC_BUTTON3UP, 306 MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP, 307 MOUSE_MSC_BUTTON2UP, 308 MOUSE_MSC_BUTTON1UP, 309 0, 310 }; 311 u_char buf[8]; 312 int x, y, z; 313 int i; 314 315 lwkt_gettoken(&tty_token); 316 switch (info->operation) { 317 case MOUSE_ACTION: 318 mouse_status.button = info->u.data.buttons; 319 /* FALL THROUGH */ 320 case MOUSE_MOTION_EVENT: 321 x = info->u.data.x; 322 y = info->u.data.y; 323 z = info->u.data.z; 324 break; 325 case MOUSE_BUTTON_EVENT: 326 x = y = z = 0; 327 if (info->u.event.value > 0) 328 mouse_status.button |= info->u.event.id; 329 else 330 mouse_status.button &= ~info->u.event.id; 331 break; 332 default: 333 lwkt_reltoken(&tty_token); 334 return 0; 335 } 336 337 mouse_status.dx += x; 338 mouse_status.dy += y; 339 mouse_status.dz += z; 340 mouse_status.flags |= ((x || y || z) ? MOUSE_POSCHANGED : 0) 341 | (mouse_status.obutton ^ mouse_status.button); 342 if (mouse_status.flags == 0) { 343 lwkt_reltoken(&tty_token); 344 return 0; 345 } 346 347 if ((sysmouse_tty == NULL) || !(sysmouse_tty->t_state & TS_ISOPEN)) { 348 lwkt_reltoken(&tty_token); 349 return mouse_status.flags; 350 } 351 352 /* the first five bytes are compatible with MouseSystems' */ 353 buf[0] = MOUSE_MSC_SYNC 354 | butmap[mouse_status.button & MOUSE_STDBUTTONS]; 355 x = imax(imin(x, 255), -256); 356 buf[1] = x >> 1; 357 buf[3] = x - buf[1]; 358 y = -imax(imin(y, 255), -256); 359 buf[2] = y >> 1; 360 buf[4] = y - buf[2]; 361 for (i = 0; i < MOUSE_MSC_PACKETSIZE; ++i) 362 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], sysmouse_tty); 363 if (mouse_level >= 1) { 364 /* extended part */ 365 z = imax(imin(z, 127), -128); 366 buf[5] = (z >> 1) & 0x7f; 367 buf[6] = (z - (z >> 1)) & 0x7f; 368 /* buttons 4-10 */ 369 buf[7] = (~mouse_status.button >> 3) & 0x7f; 370 for (i = MOUSE_MSC_PACKETSIZE; i < MOUSE_SYS_PACKETSIZE; ++i) 371 (*linesw[sysmouse_tty->t_line].l_rint)(buf[i], 372 sysmouse_tty); 373 } 374 375 lwkt_reltoken(&tty_token); 376 return mouse_status.flags; 377 } 378 379 #endif /* !SC_NO_SYSMOUSE */ 380