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