wsdisplay_compat_usl.c revision 1.36
1 /* $NetBSD: wsdisplay_compat_usl.c,v 1.36 2006/11/11 17:28:16 bjh21 Exp $ */ 2 3 /* 4 * Copyright (c) 1998 5 * Matthias Drochner. 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. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: wsdisplay_compat_usl.c,v 1.36 2006/11/11 17:28:16 bjh21 Exp $"); 31 32 #include "opt_compat_freebsd.h" 33 #include "opt_compat_netbsd.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/callout.h> 38 #include <sys/ioctl.h> 39 #include <sys/kernel.h> 40 #include <sys/proc.h> 41 #include <sys/signalvar.h> 42 #include <sys/malloc.h> 43 #include <sys/errno.h> 44 #include <sys/kauth.h> 45 46 #include <dev/wscons/wsconsio.h> 47 #include <dev/wscons/wsdisplayvar.h> 48 #include <dev/wscons/wscons_callbacks.h> 49 #include <dev/wscons/wsdisplay_usl_io.h> 50 51 #include "opt_wsdisplay_compat.h" 52 53 struct usl_syncdata { 54 struct wsscreen *s_scr; 55 struct proc *s_proc; 56 pid_t s_pid; 57 int s_flags; 58 #define SF_DETACHPENDING 1 59 #define SF_ATTACHPENDING 2 60 int s_acqsig, s_relsig; 61 int s_frsig; /* unused */ 62 void (*s_callback)(void *, int, int); 63 void *s_cbarg; 64 struct callout s_attach_ch; 65 struct callout s_detach_ch; 66 }; 67 68 static int usl_sync_init(struct wsscreen *, struct usl_syncdata **, 69 struct proc *, int, int, int); 70 static void usl_sync_done(struct usl_syncdata *); 71 static int usl_sync_check(struct usl_syncdata *); 72 static struct usl_syncdata *usl_sync_get(struct wsscreen *); 73 74 static int usl_detachproc(void *, int, void (*)(void *, int, int), void *); 75 static int usl_detachack(struct usl_syncdata *, int); 76 static void usl_detachtimeout(void *); 77 static int usl_attachproc(void *, int, void (*)(void *, int, int), void *); 78 static int usl_attachack(struct usl_syncdata *, int); 79 static void usl_attachtimeout(void *); 80 81 static const struct wscons_syncops usl_syncops = { 82 usl_detachproc, 83 usl_attachproc, 84 #define _usl_sync_check ((int (*)(void *))usl_sync_check) 85 _usl_sync_check, 86 #define _usl_sync_destroy ((void (*)(void *))usl_sync_done) 87 _usl_sync_destroy 88 }; 89 90 #ifndef WSCOMPAT_USL_SYNCTIMEOUT 91 #define WSCOMPAT_USL_SYNCTIMEOUT 5 /* seconds */ 92 #endif 93 static int wscompat_usl_synctimeout = WSCOMPAT_USL_SYNCTIMEOUT; 94 95 static int 96 usl_sync_init(struct wsscreen *scr, struct usl_syncdata **sdp, 97 struct proc *p, int acqsig, int relsig, int frsig) 98 { 99 struct usl_syncdata *sd; 100 int res; 101 102 sd = malloc(sizeof(struct usl_syncdata), M_DEVBUF, M_WAITOK); 103 if (!sd) 104 return (ENOMEM); 105 sd->s_scr = scr; 106 sd->s_proc = p; 107 sd->s_pid = p->p_pid; 108 sd->s_flags = 0; 109 sd->s_acqsig = acqsig; 110 sd->s_relsig = relsig; 111 sd->s_frsig = frsig; 112 callout_init(&sd->s_attach_ch); 113 callout_init(&sd->s_detach_ch); 114 res = wsscreen_attach_sync(scr, &usl_syncops, sd); 115 if (res) { 116 free(sd, M_DEVBUF); 117 return (res); 118 } 119 *sdp = sd; 120 return (0); 121 } 122 123 static void 124 usl_sync_done(struct usl_syncdata *sd) 125 { 126 if (sd->s_flags & SF_DETACHPENDING) { 127 callout_stop(&sd->s_detach_ch); 128 (*sd->s_callback)(sd->s_cbarg, 0, 0); 129 } 130 if (sd->s_flags & SF_ATTACHPENDING) { 131 callout_stop(&sd->s_attach_ch); 132 (*sd->s_callback)(sd->s_cbarg, ENXIO, 0); 133 } 134 wsscreen_detach_sync(sd->s_scr); 135 free(sd, M_DEVBUF); 136 } 137 138 static int 139 usl_sync_check(struct usl_syncdata *sd) 140 { 141 if (sd->s_proc == pfind(sd->s_pid)) 142 return (1); 143 printf("usl_sync_check: process %d died\n", sd->s_pid); 144 usl_sync_done(sd); 145 return (0); 146 } 147 148 static struct usl_syncdata * 149 usl_sync_get(struct wsscreen *scr) 150 { 151 void *sd; 152 153 if (wsscreen_lookup_sync(scr, &usl_syncops, &sd)) 154 return (0); 155 return (struct usl_syncdata *)sd; 156 } 157 158 static int 159 usl_detachproc(void *cookie, int waitok __unused, 160 void (*callback)(void *, int, int), void *cbarg) 161 { 162 struct usl_syncdata *sd = cookie; 163 164 if (!usl_sync_check(sd)) 165 return (0); 166 167 /* we really need a callback */ 168 if (!callback) 169 return (EINVAL); 170 171 /* 172 * Normally, this is called from the controlling process. 173 * Is is supposed to reply with a VT_RELDISP ioctl(), so 174 * it is not useful to tsleep() here. 175 */ 176 sd->s_callback = callback; 177 sd->s_cbarg = cbarg; 178 sd->s_flags |= SF_DETACHPENDING; 179 psignal(sd->s_proc, sd->s_relsig); 180 callout_reset(&sd->s_detach_ch, wscompat_usl_synctimeout * hz, 181 usl_detachtimeout, sd); 182 183 return (EAGAIN); 184 } 185 186 static int 187 usl_detachack(struct usl_syncdata *sd, int ack) 188 { 189 if (!(sd->s_flags & SF_DETACHPENDING)) { 190 printf("usl_detachack: not detaching\n"); 191 return (EINVAL); 192 } 193 194 callout_stop(&sd->s_detach_ch); 195 sd->s_flags &= ~SF_DETACHPENDING; 196 197 if (sd->s_callback) 198 (*sd->s_callback)(sd->s_cbarg, (ack ? 0 : EIO), 1); 199 200 return (0); 201 } 202 203 static void 204 usl_detachtimeout(void *arg) 205 { 206 struct usl_syncdata *sd = arg; 207 208 printf("usl_detachtimeout\n"); 209 210 if (!(sd->s_flags & SF_DETACHPENDING)) { 211 printf("usl_detachtimeout: not detaching\n"); 212 return; 213 } 214 215 sd->s_flags &= ~SF_DETACHPENDING; 216 217 if (sd->s_callback) 218 (*sd->s_callback)(sd->s_cbarg, EIO, 0); 219 220 (void) usl_sync_check(sd); 221 } 222 223 static int 224 usl_attachproc(void *cookie, int waitok __unused, 225 void (*callback)(void *, int, int), void *cbarg) 226 { 227 struct usl_syncdata *sd = cookie; 228 229 if (!usl_sync_check(sd)) 230 return (0); 231 232 /* we really need a callback */ 233 if (!callback) 234 return (EINVAL); 235 236 sd->s_callback = callback; 237 sd->s_cbarg = cbarg; 238 sd->s_flags |= SF_ATTACHPENDING; 239 psignal(sd->s_proc, sd->s_acqsig); 240 callout_reset(&sd->s_attach_ch, wscompat_usl_synctimeout * hz, 241 usl_attachtimeout, sd); 242 243 return (EAGAIN); 244 } 245 246 static int 247 usl_attachack(struct usl_syncdata *sd, int ack) 248 { 249 if (!(sd->s_flags & SF_ATTACHPENDING)) { 250 printf("usl_attachack: not attaching\n"); 251 return (EINVAL); 252 } 253 254 callout_stop(&sd->s_attach_ch); 255 sd->s_flags &= ~SF_ATTACHPENDING; 256 257 if (sd->s_callback) 258 (*sd->s_callback)(sd->s_cbarg, (ack ? 0 : EIO), 1); 259 260 return (0); 261 } 262 263 static void 264 usl_attachtimeout(void *arg) 265 { 266 struct usl_syncdata *sd = arg; 267 268 printf("usl_attachtimeout\n"); 269 270 if (!(sd->s_flags & SF_ATTACHPENDING)) { 271 printf("usl_attachtimeout: not attaching\n"); 272 return; 273 } 274 275 sd->s_flags &= ~SF_ATTACHPENDING; 276 277 if (sd->s_callback) 278 (*sd->s_callback)(sd->s_cbarg, EIO, 0); 279 280 (void) usl_sync_check(sd); 281 } 282 283 int 284 wsdisplay_usl_ioctl1(struct wsdisplay_softc *sc, u_long cmd, caddr_t data, 285 int flag __unused, struct lwp *l __unused) 286 { 287 int idx, maxidx; 288 289 switch (cmd) { 290 case VT_OPENQRY: 291 maxidx = wsdisplay_maxscreenidx(sc); 292 for (idx = 0; idx <= maxidx; idx++) { 293 if (wsdisplay_screenstate(sc, idx) == 0) { 294 *(int *)data = idx + 1; 295 return (0); 296 } 297 } 298 return (ENXIO); 299 case VT_GETACTIVE: 300 idx = wsdisplay_getactivescreen(sc); 301 *(int *)data = idx + 1; 302 return (0); 303 case VT_ACTIVATE: 304 /* 305 * a gross and disgusting hack to make this abused up ioctl, 306 * which is a gross and disgusting hack on its own, work on 307 * LP64/BE - we want the lower 32bit so we simply dereference 308 * the argument pointer as long. May cause problems with 32bit 309 * kernels on sparc64? 310 */ 311 312 idx = *(long *)data - 1; 313 if (idx < 0) 314 return (EINVAL); 315 return (wsdisplay_switch((struct device *)sc, idx, 1)); 316 case VT_WAITACTIVE: 317 idx = *(long *)data - 1; 318 if (idx < 0) 319 return (EINVAL); 320 return (wsscreen_switchwait(sc, idx)); 321 case VT_GETSTATE: 322 #define ss ((struct vt_stat *)data) 323 idx = wsdisplay_getactivescreen(sc); 324 ss->v_active = idx + 1; 325 ss->v_state = 0; 326 maxidx = wsdisplay_maxscreenidx(sc); 327 for (idx = 0; idx <= maxidx; idx++) 328 if (wsdisplay_screenstate(sc, idx) == EBUSY) 329 ss->v_state |= (1 << (idx + 1)); 330 #undef ss 331 return (0); 332 333 #ifdef WSDISPLAY_COMPAT_PCVT 334 case VGAPCVTID: 335 #define id ((struct pcvtid *)data) 336 strlcpy(id->name, "pcvt", sizeof(id->name)); 337 id->rmajor = 3; 338 id->rminor = 32; 339 #undef id 340 return (0); 341 #endif 342 #ifdef WSDISPLAY_COMPAT_SYSCONS 343 case CONS_GETVERS: 344 *(int *)data = 0x200; /* version 2.0 */ 345 return (0); 346 #endif 347 348 default: 349 return (EPASSTHROUGH); 350 } 351 } 352 353 int 354 wsdisplay_usl_ioctl2(struct wsdisplay_softc *sc, struct wsscreen *scr, 355 u_long cmd, caddr_t data, int flag, struct lwp *l) 356 { 357 struct proc *p = l->l_proc; 358 int intarg = 0, res; 359 u_long req; 360 void *arg; 361 struct usl_syncdata *sd; 362 struct wskbd_bell_data bd; 363 364 switch (cmd) { 365 case VT_SETMODE: 366 #define newmode ((struct vt_mode *)data) 367 if (newmode->mode == VT_PROCESS) { 368 res = usl_sync_init(scr, &sd, p, newmode->acqsig, 369 newmode->relsig, newmode->frsig); 370 if (res) 371 return (res); 372 } else { 373 sd = usl_sync_get(scr); 374 if (sd) 375 usl_sync_done(sd); 376 } 377 #undef newmode 378 return (0); 379 case VT_GETMODE: 380 #define cmode ((struct vt_mode *)data) 381 sd = usl_sync_get(scr); 382 if (sd) { 383 cmode->mode = VT_PROCESS; 384 cmode->relsig = sd->s_relsig; 385 cmode->acqsig = sd->s_acqsig; 386 cmode->frsig = sd->s_frsig; 387 } else 388 cmode->mode = VT_AUTO; 389 #undef cmode 390 return (0); 391 case VT_RELDISP: 392 #define d (*(long *)data) 393 sd = usl_sync_get(scr); 394 if (!sd) 395 return (EINVAL); 396 switch (d) { 397 case VT_FALSE: 398 case VT_TRUE: 399 return (usl_detachack(sd, (d == VT_TRUE))); 400 case VT_ACKACQ: 401 return (usl_attachack(sd, 1)); 402 default: 403 return (EINVAL); 404 } 405 #undef d 406 407 case KDENABIO: 408 #if defined(__i386__) && (defined(COMPAT_11) || defined(COMPAT_FREEBSD)) 409 if (kauth_authorize_machdep(l->l_cred, KAUTH_MACHDEP_X86, 410 KAUTH_REQ_MACHDEP_X86_IOPL, NULL, NULL, NULL) != 0) 411 return (EPERM); 412 #endif 413 /* FALLTHRU */ 414 case KDDISABIO: 415 #if defined(__i386__) && (defined(COMPAT_11) || defined(COMPAT_FREEBSD)) 416 { 417 /* XXX NJWLWP */ 418 struct trapframe *fp = (struct trapframe *)curlwp->l_md.md_regs; 419 if (cmd == KDENABIO) 420 fp->tf_eflags |= PSL_IOPL; 421 else 422 fp->tf_eflags &= ~PSL_IOPL; 423 } 424 #endif 425 return (0); 426 case KDSETRAD: 427 /* XXX ignore for now */ 428 return (0); 429 430 default: 431 return (EPASSTHROUGH); 432 433 /* 434 * the following are converted to wsdisplay ioctls 435 */ 436 case KDSETMODE: 437 req = WSDISPLAYIO_SMODE; 438 #define d (*(int *)data) 439 switch (d) { 440 case KD_GRAPHICS: 441 intarg = WSDISPLAYIO_MODE_MAPPED; 442 break; 443 case KD_TEXT: 444 intarg = WSDISPLAYIO_MODE_EMUL; 445 break; 446 default: 447 return (EINVAL); 448 } 449 #undef d 450 arg = &intarg; 451 break; 452 case KDMKTONE: 453 req = WSKBDIO_COMPLEXBELL; 454 #define d (*(int *)data) 455 if (d) { 456 #define PCVT_SYSBEEPF 1193182 457 if (d >> 16) { 458 bd.which = WSKBD_BELL_DOPERIOD; 459 bd.period = d >> 16; /* ms */ 460 } 461 else 462 bd.which = 0; 463 if (d & 0xffff) { 464 bd.which |= WSKBD_BELL_DOPITCH; 465 bd.pitch = PCVT_SYSBEEPF/(d & 0xffff); /* Hz */ 466 } 467 } else 468 bd.which = 0; /* default */ 469 #undef d 470 arg = &bd; 471 break; 472 case KDSETLED: 473 req = WSKBDIO_SETLEDS; 474 intarg = 0; 475 #define d (*(int *)data) 476 if (d & LED_CAP) 477 intarg |= WSKBD_LED_CAPS; 478 if (d & LED_NUM) 479 intarg |= WSKBD_LED_NUM; 480 if (d & LED_SCR) 481 intarg |= WSKBD_LED_SCROLL; 482 #undef d 483 arg = &intarg; 484 break; 485 case KDGETLED: 486 req = WSKBDIO_GETLEDS; 487 arg = &intarg; 488 break; 489 #ifdef WSDISPLAY_COMPAT_RAWKBD 490 case KDSKBMODE: 491 req = WSKBDIO_SETMODE; 492 switch (*(int *)data) { 493 case K_RAW: 494 intarg = WSKBD_RAW; 495 break; 496 case K_XLATE: 497 intarg = WSKBD_TRANSLATED; 498 break; 499 default: 500 return (EINVAL); 501 } 502 arg = &intarg; 503 break; 504 case KDGKBMODE: 505 req = WSKBDIO_GETMODE; 506 arg = &intarg; 507 break; 508 #endif 509 } 510 511 res = wsdisplay_internal_ioctl(sc, scr, req, arg, flag, l); 512 if (res != EPASSTHROUGH) 513 return (res); 514 515 switch (cmd) { 516 case KDGETLED: 517 #define d (*(int *)data) 518 d = 0; 519 if (intarg & WSKBD_LED_CAPS) 520 d |= LED_CAP; 521 if (intarg & WSKBD_LED_NUM) 522 d |= LED_NUM; 523 if (intarg & WSKBD_LED_SCROLL) 524 d |= LED_SCR; 525 #undef d 526 break; 527 #ifdef WSDISPLAY_COMPAT_RAWKBD 528 case KDGKBMODE: 529 *(int *)data = (intarg == WSKBD_RAW ? K_RAW : K_XLATE); 530 break; 531 #endif 532 } 533 534 return (0); 535 } 536
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