1 /* 2 * USB Human Interaction Device: keyboard and mouse. 3 * 4 * If there's no usb keyboard, it tries to setup the mouse, if any. 5 * It should be started at boot time. 6 * 7 * Mouse events are converted to the format of mouse(3)'s mousein file. 8 * Keyboard keycodes are translated to scan codes and sent to kbin(3). 9 * 10 * If there is no keyboard, it tries to setup the mouse properly, else it falls 11 * back to boot protocol. 12 */ 13 14 #include <u.h> 15 #include <libc.h> 16 #include <thread.h> 17 #include "usb.h" 18 #include "hid.h" 19 20 enum 21 { 22 Awakemsg= 0xdeaddead, 23 Diemsg = 0xbeefbeef, 24 }; 25 26 typedef struct KDev KDev; 27 typedef struct Kin Kin; 28 29 struct KDev 30 { 31 Dev* dev; /* usb device*/ 32 Dev* ep; /* endpoint to get events */ 33 Kin* in; /* used to send events to kernel */ 34 Channel*repeatc; /* only for keyboard */ 35 int accel; /* only for mouse */ 36 int bootp; /* has associated keyboard */ 37 HidRepTempl templ; 38 int (*ptrvals)(KDev *kd, Chain *ch, int *px, int *py, int *pb); 39 }; 40 41 /* 42 * Kbdin and mousein files must be shared among all instances. 43 */ 44 struct Kin 45 { 46 int ref; 47 int fd; 48 char* name; 49 }; 50 51 /* 52 * Map for the logitech bluetooth mouse with 8 buttons and wheels. 53 * { ptr ->mouse} 54 * { 0x01, 0x01 }, // left 55 * { 0x04, 0x02 }, // middle 56 * { 0x02, 0x04 }, // right 57 * { 0x40, 0x08 }, // up 58 * { 0x80, 0x10 }, // down 59 * { 0x10, 0x08 }, // side up 60 * { 0x08, 0x10 }, // side down 61 * { 0x20, 0x02 }, // page 62 * besides wheel and regular up/down report the 4th byte as 1/-1 63 */ 64 65 /* 66 * key code to scan code; for the page table used by 67 * the logitech bluetooth keyboard. 68 */ 69 static char sctab[256] = 70 { 71 [0x00] 0x0, 0x0, 0x0, 0x0, 0x1e, 0x30, 0x2e, 0x20, 72 [0x08] 0x12, 0x21, 0x22, 0x23, 0x17, 0x24, 0x25, 0x26, 73 [0x10] 0x32, 0x31, 0x18, 0x19, 0x10, 0x13, 0x1f, 0x14, 74 [0x18] 0x16, 0x2f, 0x11, 0x2d, 0x15, 0x2c, 0x2, 0x3, 75 [0x20] 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 76 [0x28] 0x1c, 0x1, 0xe, 0xf, 0x39, 0xc, 0xd, 0x1a, 77 [0x30] 0x1b, 0x2b, 0x2b, 0x27, 0x28, 0x29, 0x33, 0x34, 78 [0x38] 0x35, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 79 [0x40] 0x41, 0x42, 0x43, 0x44, 0x57, 0x58, 0x63, 0x46, 80 [0x48] 0x77, 0x52, 0x47, 0x49, 0x53, 0x4f, 0x51, 0x4d, 81 [0x50] 0x4b, 0x50, 0x48, 0x45, 0x35, 0x37, 0x4a, 0x4e, 82 [0x58] 0x1c, 0x4f, 0x50, 0x51, 0x4b, 0x4c, 0x4d, 0x47, 83 [0x60] 0x48, 0x49, 0x52, 0x53, 0x56, 0x7f, 0x74, 0x75, 84 [0x68] 0x55, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 85 [0x70] 0x78, 0x79, 0x7a, 0x7b, 0x0, 0x0, 0x0, 0x0, 86 [0x78] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x71, 87 [0x80] 0x73, 0x72, 0x0, 0x0, 0x0, 0x7c, 0x0, 0x0, 88 [0x88] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 89 [0x90] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 90 [0x98] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 91 [0xa0] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 92 [0xa8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 93 [0xb0] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 94 [0xb8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 95 [0xc0] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 96 [0xc8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 97 [0xd0] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 98 [0xd8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 99 [0xe0] 0x1d, 0x2a, 0x38, 0x7d, 0x61, 0x36, 0x64, 0x7e, 100 [0xe8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x73, 0x72, 0x71, 101 [0xf0] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 102 [0xf8] 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 103 }; 104 105 static QLock inlck; 106 static Kin kbdin = 107 { 108 .ref = 0, 109 .name = "#Ι/kbin", 110 .fd = -1, 111 }; 112 static Kin ptrin = 113 { 114 .ref = 0, 115 .name = "#m/mousein", 116 .fd = -1, 117 }; 118 119 static int kbdebug; 120 121 static int ptrbootpvals(KDev *kd, Chain *ch, int *px, int *py, int *pb); 122 static int ptrrepvals(KDev *kd, Chain *ch, int *px, int *py, int *pb); 123 124 static int 125 setbootproto(KDev* f, int eid, uchar *, int) 126 { 127 int r, id; 128 129 f->ptrvals = ptrbootpvals; 130 r = Rh2d|Rclass|Riface; 131 dprint(2, "setting boot protocol\n"); 132 id = f->dev->usb->ep[eid]->iface->id; 133 return usbcmd(f->dev, r, Setproto, Bootproto, id, nil, 0); 134 } 135 136 static uchar ignoredesc[128]; 137 138 static int 139 setfirstconfig(KDev* f, int eid, uchar *desc, int descsz) 140 { 141 int nr, r, id, i; 142 143 dprint(2, "setting first config\n"); 144 if(desc == nil){ 145 descsz = sizeof ignoredesc; 146 desc = ignoredesc; 147 } 148 id = f->dev->usb->ep[eid]->iface->id; 149 r = Rh2d | Rstd | Rdev; 150 nr =usbcmd(f->dev, r, Rsetconf, 1, id, nil, 0); 151 if(nr < 0) 152 return -1; 153 r = Rh2d | Rclass | Riface; 154 nr=usbcmd(f->dev, r, Setidle, 0, id, nil, 0); 155 if(nr < 0) 156 return -1; 157 r = Rd2h | Rstd | Riface; 158 nr=usbcmd(f->dev, r, Rgetdesc, Dreport<<8, id, desc, descsz); 159 if(nr < 0) 160 return -1; 161 if(kbdebug && nr > 0){ 162 fprint(2, "report descriptor:"); 163 for(i = 0; i < nr; i++){ 164 if(i%8 == 0) 165 fprint(2, "\n\t"); 166 fprint(2, "%#2.2ux ", desc[i]); 167 } 168 fprint(2, "\n"); 169 } 170 f->ptrvals = ptrrepvals; 171 return nr; 172 } 173 174 /* 175 * Try to recover from a babble error. A port reset is the only way out. 176 * BUG: we should be careful not to reset a bundle with several devices. 177 */ 178 static void 179 recoverkb(KDev *f) 180 { 181 int i; 182 183 close(f->dev->dfd); /* it's for usbd now */ 184 devctl(f->dev, "reset"); 185 for(i = 0; i < 10; i++){ 186 if(i == 5) 187 f->bootp++; 188 sleep(500); 189 if(opendevdata(f->dev, ORDWR) >= 0){ 190 if(f->bootp) 191 /* TODO func pointer */ 192 setbootproto(f, f->ep->id, nil, 0); 193 else 194 setfirstconfig(f, f->ep->id, nil, 0); 195 break; 196 } 197 /* else usbd still working... */ 198 } 199 } 200 201 static void 202 kbfatal(KDev *kd, char *sts) 203 { 204 Dev *dev; 205 206 if(sts != nil) 207 fprint(2, "kb: fatal: %s\n", sts); 208 else 209 fprint(2, "kb: exiting\n"); 210 if(kd->repeatc != nil) 211 nbsendul(kd->repeatc, Diemsg); 212 dev = kd->dev; 213 kd->dev = nil; 214 if(kd->ep != nil) 215 closedev(kd->ep); 216 kd->ep = nil; 217 devctl(dev, "detach"); 218 closedev(dev); 219 /* 220 * free(kd); done by closedev. 221 */ 222 threadexits(sts); 223 } 224 225 static int 226 scale(KDev *f, int x) 227 { 228 int sign = 1; 229 230 if(x < 0){ 231 sign = -1; 232 x = -x; 233 } 234 switch(x){ 235 case 0: 236 case 1: 237 case 2: 238 case 3: 239 break; 240 case 4: 241 x = 6 + (f->accel>>2); 242 break; 243 case 5: 244 x = 9 + (f->accel>>1); 245 break; 246 default: 247 x *= MaxAcc; 248 break; 249 } 250 return sign*x; 251 } 252 253 /* 254 * ps2 mouse is processed mostly at interrupt time. 255 * for usb we do what we can. 256 */ 257 static void 258 sethipri(void) 259 { 260 char fn[30]; 261 int fd; 262 263 snprint(fn, sizeof fn, "/proc/%d/ctl", getpid()); 264 fd = open(fn, OWRITE); 265 if(fd >= 0) { 266 fprint(fd, "pri 13"); 267 close(fd); 268 } 269 } 270 271 static int 272 ptrrepvals(KDev *kd, Chain *ch, int *px, int *py, int *pb) 273 { 274 int i, x, y, b, c; 275 static char buts[] = {0x0, 0x2, 0x1}; 276 277 c = ch->e / 8; 278 parsereport(&kd->templ, ch); 279 280 if(kbdebug) 281 dumpreport(&kd->templ); 282 if(c < 3) 283 return -1; 284 x = hidifcval(&kd->templ, KindX, 0); 285 y = hidifcval(&kd->templ, KindY, 0); 286 b = 0; 287 for(i = 0; i<sizeof buts; i++) 288 b |= (hidifcval(&kd->templ, KindButtons, i) & 1) << buts[i]; 289 if(c > 3 && hidifcval(&kd->templ, KindWheel, 0) > 0) /* up */ 290 b |= 0x10; 291 if(c > 3 && hidifcval(&kd->templ, KindWheel, 0) < 0) /* down */ 292 b |= 0x08; 293 294 *px = x; 295 *py = y; 296 *pb = b; 297 return 0; 298 } 299 300 static int 301 ptrbootpvals(KDev *kd, Chain *ch, int *px, int *py, int *pb) 302 { 303 int b, c; 304 char x, y; 305 static char maptab[] = {0x0, 0x1, 0x4, 0x5, 0x2, 0x3, 0x6, 0x7}; 306 307 c = ch->e / 8; 308 if(c < 3) 309 return -1; 310 x = hidifcval(&kd->templ, KindX, 0); 311 y = hidifcval(&kd->templ, KindY, 0); 312 313 b = maptab[ch->buf[0] & 0x7]; 314 if(c > 3 && ch->buf[3] == 1) /* up */ 315 b |= 0x08; 316 if(c > 3 && ch->buf[3] == 0xff) /* down */ 317 b |= 0x10; 318 *px = x; 319 *py = y; 320 *pb = b; 321 return 0; 322 } 323 324 static void 325 ptrwork(void* a) 326 { 327 int hipri, mfd, nerrs, x, y, b, c, ptrfd; 328 char mbuf[80]; 329 Chain ch; 330 KDev* f = a; 331 332 hipri = nerrs = 0; 333 ptrfd = f->ep->dfd; 334 mfd = f->in->fd; 335 if(f->ep->maxpkt < 3 || f->ep->maxpkt > MaxChLen) 336 kbfatal(f, "weird mouse maxpkt"); 337 for(;;){ 338 memset(ch.buf, 0, MaxChLen); 339 if(f->ep == nil) 340 kbfatal(f, nil); 341 c = read(ptrfd, ch.buf, f->ep->maxpkt); 342 assert(f->dev != nil); 343 assert(f->ep != nil); 344 if(c < 0){ 345 dprint(2, "kb: mouse: %s: read: %r\n", f->ep->dir); 346 if(++nerrs < 3){ 347 recoverkb(f); 348 continue; 349 } 350 } 351 if(c <= 0) 352 kbfatal(f, nil); 353 ch.b = 0; 354 ch.e = 8 * c; 355 if(f->ptrvals(f, &ch, &x, &y, &b) < 0) 356 continue; 357 358 if(f->accel){ 359 x = scale(f, x); 360 y = scale(f, y); 361 } 362 if(kbdebug > 1) 363 fprint(2, "kb: m%11d %11d %11d\n", x, y, b); 364 seprint(mbuf, mbuf+sizeof(mbuf), "m%11d %11d %11d", x, y,b); 365 if(write(mfd, mbuf, strlen(mbuf)) < 0) 366 kbfatal(f, "mousein i/o"); 367 if(hipri == 0){ 368 sethipri(); 369 hipri = 1; 370 } 371 } 372 } 373 374 static void 375 stoprepeat(KDev *f) 376 { 377 sendul(f->repeatc, Awakemsg); 378 } 379 380 static void 381 startrepeat(KDev *f, uchar esc1, uchar sc) 382 { 383 ulong c; 384 385 if(esc1) 386 c = SCesc1 << 8 | (sc & 0xff); 387 else 388 c = sc; 389 sendul(f->repeatc, c); 390 } 391 392 static void 393 putscan(int kbinfd, uchar esc, uchar sc) 394 { 395 uchar s[2] = {SCesc1, 0}; 396 397 if(sc == 0x41){ 398 kbdebug += 2; 399 return; 400 } 401 if(sc == 0x42){ 402 kbdebug = 0; 403 return; 404 } 405 if(kbdebug) 406 fprint(2, "sc: %x %x\n", (esc? SCesc1: 0), sc); 407 s[1] = sc; 408 if(esc && sc != 0) 409 write(kbinfd, s, 2); 410 else if(sc != 0) 411 write(kbinfd, s+1, 1); 412 } 413 414 static void 415 repeatproc(void* a) 416 { 417 KDev *f; 418 Channel *repeatc; 419 int kbdinfd; 420 ulong l, t, i; 421 uchar esc1, sc; 422 423 /* 424 * too many jumps here. 425 * Rewrite instead of debug, if needed. 426 */ 427 f = a; 428 repeatc = f->repeatc; 429 kbdinfd = f->in->fd; 430 l = Awakemsg; 431 Repeat: 432 if(l == Diemsg) 433 goto Abort; 434 while(l == Awakemsg) 435 l = recvul(repeatc); 436 if(l == Diemsg) 437 goto Abort; 438 esc1 = l >> 8; 439 sc = l; 440 t = 160; 441 for(;;){ 442 for(i = 0; i < t; i += 5){ 443 if(l = nbrecvul(repeatc)) 444 goto Repeat; 445 sleep(5); 446 } 447 putscan(kbdinfd, esc1, sc); 448 t = 30; 449 } 450 Abort: 451 chanfree(repeatc); 452 threadexits("aborted"); 453 454 } 455 456 457 #define hasesc1(sc) (((sc) > 0x47) || ((sc) == 0x38)) 458 459 static void 460 putmod(int fd, uchar mods, uchar omods, uchar mask, uchar esc, uchar sc) 461 { 462 /* BUG: Should be a single write */ 463 if((mods&mask) && !(omods&mask)) 464 putscan(fd, esc, sc); 465 if(!(mods&mask) && (omods&mask)) 466 putscan(fd, esc, Keyup|sc); 467 } 468 469 /* 470 * This routine diffs the state with the last known state 471 * and invents the scan codes that would have been sent 472 * by a non-usb keyboard in that case. This also requires supplying 473 * the extra esc1 byte as well as keyup flags. 474 * The aim is to allow future addition of other keycode pages 475 * for other keyboards. 476 */ 477 static uchar 478 putkeys(KDev *f, uchar buf[], uchar obuf[], int n, uchar dk) 479 { 480 int i, j; 481 uchar uk; 482 int fd; 483 484 fd = f->in->fd; 485 putmod(fd, buf[0], obuf[0], Mctrl, 0, SCctrl); 486 putmod(fd, buf[0], obuf[0], (1<<Mlshift), 0, SClshift); 487 putmod(fd, buf[0], obuf[0], (1<<Mrshift), 0, SCrshift); 488 putmod(fd, buf[0], obuf[0], Mcompose, 0, SCcompose); 489 putmod(fd, buf[0], obuf[0], Maltgr, 1, SCcompose); 490 491 /* Report key downs */ 492 for(i = 2; i < n; i++){ 493 for(j = 2; j < n; j++) 494 if(buf[i] == obuf[j]) 495 break; 496 if(j == n && buf[i] != 0){ 497 dk = sctab[buf[i]]; 498 putscan(fd, hasesc1(dk), dk); 499 startrepeat(f, hasesc1(dk), dk); 500 } 501 } 502 503 /* Report key ups */ 504 uk = 0; 505 for(i = 2; i < n; i++){ 506 for(j = 2; j < n; j++) 507 if(obuf[i] == buf[j]) 508 break; 509 if(j == n && obuf[i] != 0){ 510 uk = sctab[obuf[i]]; 511 putscan(fd, hasesc1(uk), uk|Keyup); 512 } 513 } 514 if(uk && (dk == 0 || dk == uk)){ 515 stoprepeat(f); 516 dk = 0; 517 } 518 return dk; 519 } 520 521 static int 522 kbdbusy(uchar* buf, int n) 523 { 524 int i; 525 526 for(i = 1; i < n; i++) 527 if(buf[i] == 0 || buf[i] != buf[0]) 528 return 0; 529 return 1; 530 } 531 532 static void 533 kbdwork(void *a) 534 { 535 int c, i, kbdfd, nerrs; 536 uchar dk, buf[64], lbuf[64]; 537 char err[128]; 538 KDev *f = a; 539 540 kbdfd = f->ep->dfd; 541 542 if(f->ep->maxpkt < 3 || f->ep->maxpkt > sizeof buf) 543 kbfatal(f, "weird maxpkt"); 544 545 f->repeatc = chancreate(sizeof(ulong), 0); 546 if(f->repeatc == nil) 547 kbfatal(f, "chancreate failed"); 548 549 proccreate(repeatproc, f, Stack); 550 memset(lbuf, 0, sizeof lbuf); 551 dk = nerrs = 0; 552 for(;;){ 553 memset(buf, 0, sizeof buf); 554 c = read(kbdfd, buf, f->ep->maxpkt); 555 assert(f->dev != nil); 556 assert(f->ep != nil); 557 if(c < 0){ 558 rerrstr(err, sizeof(err)); 559 fprint(2, "kb: %s: read: %s\n", f->ep->dir, err); 560 if(strstr(err, "babble") != 0 && ++nerrs < 3){ 561 recoverkb(f); 562 continue; 563 } 564 } 565 if(c <= 0) 566 kbfatal(f, nil); 567 if(c < 3) 568 continue; 569 if(kbdbusy(buf + 2, c - 2)) 570 continue; 571 if(usbdebug > 2 || kbdebug > 1){ 572 fprint(2, "kbd mod %x: ", buf[0]); 573 for(i = 2; i < c; i++) 574 fprint(2, "kc %x ", buf[i]); 575 fprint(2, "\n"); 576 } 577 dk = putkeys(f, buf, lbuf, f->ep->maxpkt, dk); 578 memmove(lbuf, buf, c); 579 nerrs = 0; 580 } 581 } 582 583 static void 584 freekdev(void *a) 585 { 586 KDev *kd; 587 588 kd = a; 589 if(kd->in != nil){ 590 qlock(&inlck); 591 if(--kd->in->ref == 0){ 592 close(kd->in->fd); 593 kd->in->fd = -1; 594 } 595 qunlock(&inlck); 596 } 597 dprint(2, "freekdev\n"); 598 free(kd); 599 } 600 601 static void 602 kbstart(Dev *d, Ep *ep, Kin *in, void (*f)(void*), KDev *kd) 603 { 604 uchar desc[128]; 605 int res; 606 607 qlock(&inlck); 608 if(in->fd < 0){ 609 in->fd = open(in->name, OWRITE); 610 if(in->fd < 0){ 611 fprint(2, "kb: %s: %r\n", in->name); 612 qunlock(&inlck); 613 return; 614 } 615 } 616 in->ref++; /* for kd->in = in */ 617 qunlock(&inlck); 618 d->free = freekdev; 619 kd->in = in; 620 kd->dev = d; 621 res = -1; 622 if(!kd->bootp) 623 res= setfirstconfig(kd, ep->id, desc, sizeof desc); 624 if(res > 0) 625 res = parsereportdesc(&kd->templ, desc, sizeof desc); 626 /* if we could not set the first config, we give up */ 627 if(kd->bootp || res < 0){ 628 kd->bootp = 1; 629 if(setbootproto(kd, ep->id, nil, 0) < 0){ 630 fprint(2, "kb: %s: bootproto: %r\n", d->dir); 631 return; 632 } 633 }else if(kbdebug) 634 dumpreport(&kd->templ); 635 kd->ep = openep(d, ep->id); 636 if(kd->ep == nil){ 637 fprint(2, "kb: %s: openep %d: %r\n", d->dir, ep->id); 638 return; 639 } 640 if(opendevdata(kd->ep, OREAD) < 0){ 641 fprint(2, "kb: %s: opendevdata: %r\n", kd->ep->dir); 642 closedev(kd->ep); 643 kd->ep = nil; 644 return; 645 } 646 647 incref(d); 648 proccreate(f, kd, Stack); 649 } 650 651 static int 652 usage(void) 653 { 654 werrstr("usage: usb/kb [-bdkm] [-a n] [-N nb]"); 655 return -1; 656 } 657 658 int 659 kbmain(Dev *d, int argc, char* argv[]) 660 { 661 int bootp, i, kena, pena, accel, devid; 662 Ep *ep; 663 KDev *kd; 664 Usbdev *ud; 665 666 kena = pena = 1; 667 bootp = 0; 668 accel = 0; 669 devid = d->id; 670 ARGBEGIN{ 671 case 'a': 672 accel = strtol(EARGF(usage()), nil, 0); 673 break; 674 case 'd': 675 kbdebug++; 676 break; 677 case 'k': 678 kena = 1; 679 pena = 0; 680 break; 681 case 'm': 682 kena = 0; 683 pena = 1; 684 break; 685 case 'N': 686 devid = atoi(EARGF(usage())); /* ignore dev number */ 687 break; 688 case 'b': 689 bootp++; 690 break; 691 default: 692 return usage(); 693 }ARGEND; 694 if(argc != 0) 695 return usage(); 696 USED(devid); 697 ud = d->usb; 698 d->aux = nil; 699 dprint(2, "kb: main: dev %s ref %ld\n", d->dir, d->ref); 700 701 if(kena) 702 for(i = 0; i < nelem(ud->ep); i++) 703 if((ep = ud->ep[i]) == nil) 704 break; 705 else if(ep->iface->csp == KbdCSP) 706 bootp = 1; 707 708 for(i = 0; i < nelem(ud->ep); i++){ 709 if((ep = ud->ep[i]) == nil) 710 break; 711 if(kena && ep->type == Eintr && ep->dir == Ein && 712 ep->iface->csp == KbdCSP){ 713 kd = d->aux = emallocz(sizeof(KDev), 1); 714 kd->accel = 0; 715 kd->bootp = 1; 716 kbstart(d, ep, &kbdin, kbdwork, kd); 717 } 718 if(pena && ep->type == Eintr && ep->dir == Ein && 719 ep->iface->csp == PtrCSP){ 720 kd = d->aux = emallocz(sizeof(KDev), 1); 721 kd->accel = accel; 722 kd->bootp = bootp; 723 kbstart(d, ep, &ptrin, ptrwork, kd); 724 } 725 } 726 return 0; 727 } 728