devusb.c 21 KB

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  1. /*
  2. * USB device and framework.
  3. * usb*.c contains host controller interface drivers.
  4. */
  5. #include "u.h"
  6. #include "../port/lib.h"
  7. #include "mem.h"
  8. #include "dat.h"
  9. #include "fns.h"
  10. #include "io.h"
  11. #include "../port/error.h"
  12. #include "usb.h"
  13. static int debug = 0;
  14. static int debugtoggle = 0;
  15. #define XPRINT if(debug)print
  16. Usbhost* usbhost[MaxUsb];
  17. static char *devstates[] = {
  18. [Disabled] "Disabled",
  19. [Attached] "Attached",
  20. [Enabled] "Enabled",
  21. [Assigned] "Assigned",
  22. [Configured] "Configured",
  23. };
  24. static char Ebadusbmsg[] = "invalid parameters to USB ctl message";
  25. static char Eeprange[] = "usb endpoint number out of range";
  26. static char Eiso[] = "usb endpoint in isochronous mode";
  27. static char Enousbhost[] = "no Usbhost";
  28. static char Ewrongmode[] = "no usb endpoint or wrong open mode";
  29. enum
  30. {
  31. Qtopdir = 0,
  32. Q2nd,
  33. Qnew,
  34. Qdebug,
  35. Qport,
  36. Q3rd,
  37. Qctl,
  38. Qstatus,
  39. Qep0,
  40. /* other endpoint files */
  41. };
  42. /*
  43. * Qid path is:
  44. * 8 bits of file type (qids above)
  45. * 8 bits of slot number; default address 0 used for per-controller files
  46. * 4 bits of controller number
  47. */
  48. enum {
  49. TYPEBITS = 8,
  50. SLOTBITS = 8,
  51. CTLRBITS = 4,
  52. SLOTSHIFT = TYPEBITS,
  53. CTLRSHIFT = SLOTSHIFT+SLOTBITS,
  54. TYPEMASK = (1<<TYPEBITS)-1,
  55. SLOTMASK = (1<<SLOTBITS)-1,
  56. CTLRMASK = (1<<CTLRBITS)-1,
  57. };
  58. #define TYPE(q) (((ulong)(q).path)&TYPEMASK)
  59. #define SLOT(q) ((((ulong)(q).path)>>SLOTSHIFT)&SLOTMASK)
  60. #define CTLR(q) ((((ulong)(q).path)>>CTLRSHIFT)&CTLRMASK)
  61. #define PATH(t, s, c) ((t)|((s)<<SLOTSHIFT)|((c)<<CTLRSHIFT))
  62. static Dirtab usbdir2[] = {
  63. "new", {Qnew}, 0, 0666,
  64. "debug", {Qdebug}, 0, 0444,
  65. "port", {Qport}, 0, 0666,
  66. };
  67. static Dirtab usbdir3[]={
  68. "ctl", {Qctl}, 0, 0666,
  69. "status", {Qstatus}, 0, 0444,
  70. "setup", {Qep0}, 0, 0666,
  71. /* epNdata names are generated on demand */
  72. };
  73. enum
  74. {
  75. PMdisable,
  76. PMenable,
  77. PMreset,
  78. };
  79. enum
  80. {
  81. CMclass,
  82. CMdata,
  83. CMdebug,
  84. CMep,
  85. CMmaxpkt,
  86. CMadjust,
  87. CMspeed,
  88. CMunstall,
  89. };
  90. static Cmdtab usbportmsg[] =
  91. {
  92. PMdisable, "disable", 2,
  93. PMenable, "enable", 2,
  94. PMreset, "reset", 2,
  95. };
  96. static Cmdtab usbctlmsg[] =
  97. {
  98. CMclass, "class", 0,
  99. CMdata, "data", 3,
  100. CMdebug, "debug", 3,
  101. CMep, "ep", 0,
  102. CMmaxpkt, "maxpkt", 3,
  103. CMadjust, "adjust", 3,
  104. CMspeed, "speed", 2,
  105. CMunstall, "unstall", 2,
  106. };
  107. static struct
  108. {
  109. char* type;
  110. int (*reset)(Usbhost*);
  111. } usbtypes[MaxUsb+1];
  112. void
  113. addusbtype(char* t, int (*r)(Usbhost*))
  114. {
  115. static int ntype;
  116. if(ntype == MaxUsb)
  117. panic("too many USB host interface types");
  118. usbtypes[ntype].type = t;
  119. usbtypes[ntype].reset = r;
  120. ntype++;
  121. }
  122. static Udev*
  123. usbdeviceofslot(Usbhost *uh, int s)
  124. {
  125. if(s < 0 || s >= nelem(uh->dev))
  126. return nil;
  127. return uh->dev[s];
  128. }
  129. static Udev*
  130. usbdevice(Chan *c)
  131. {
  132. int bus;
  133. Udev *d;
  134. Usbhost *uh;
  135. bus = CTLR(c->qid);
  136. if(bus >= nelem(usbhost) || (uh = usbhost[bus]) == nil) {
  137. error(Enousbhost);
  138. return nil; /* for compiler */
  139. }
  140. d = usbdeviceofslot(uh, SLOT(c->qid));
  141. if(d == nil || d->id != c->qid.vers || d->state == Disabled)
  142. error(Ehungup);
  143. return d;
  144. }
  145. static Endpt *
  146. devendpt(Udev *d, int id, int add)
  147. {
  148. Usbhost *uh;
  149. Endpt *e, **p;
  150. p = &d->ep[id&0xF];
  151. lock(d);
  152. e = *p;
  153. if(e != nil){
  154. incref(e);
  155. XPRINT("incref(0x%p) in devendpt, new value %ld\n", e, e->ref);
  156. unlock(d);
  157. return e;
  158. }
  159. unlock(d);
  160. if(!add)
  161. return nil;
  162. e = mallocz(sizeof(*e), 1);
  163. e->ref = 1;
  164. e->x = id&0xF;
  165. e->id = id;
  166. e->sched = -1;
  167. e->maxpkt = 8;
  168. e->nbuf = 1;
  169. e->dev = d;
  170. e->active = 0;
  171. uh = d->uh;
  172. uh->epalloc(uh, e);
  173. lock(d);
  174. if(*p != nil){
  175. incref(*p);
  176. XPRINT("incref(0x%p) in devendpt, new value %ld\n",
  177. *p, (*p)->ref);
  178. unlock(d);
  179. uh->epfree(uh, e);
  180. free(e);
  181. return *p;
  182. }
  183. *p = e;
  184. unlock(d);
  185. e->rq = qopen(8*1024, 0, nil, e);
  186. e->wq = qopen(8*1024, 0, nil, e);
  187. return e;
  188. }
  189. static void
  190. freept(Endpt *e)
  191. {
  192. Usbhost *uh;
  193. if(e != nil && decref(e) == 0){
  194. XPRINT("freept(%d,%d)\n", e->dev->x, e->x);
  195. uh = e->dev->uh;
  196. uh->epclose(uh, e);
  197. e->dev->ep[e->x] = nil;
  198. uh->epfree(uh, e);
  199. free(e);
  200. }
  201. }
  202. static Udev*
  203. usbnewdevice(Usbhost *uh)
  204. {
  205. int i;
  206. Udev *d;
  207. Endpt *e;
  208. d = nil;
  209. qlock(uh);
  210. if(waserror()){
  211. if(d){
  212. uh->dev[d->x] = nil;
  213. freept(d->ep[0]);
  214. free(d);
  215. }
  216. qunlock(uh);
  217. nexterror();
  218. }
  219. for(i=0; i<nelem(uh->dev); i++)
  220. if(uh->dev[i] == nil){
  221. uh->idgen++;
  222. d = mallocz(sizeof(*d), 1);
  223. d->uh = uh;
  224. d->ref = 1;
  225. d->x = i;
  226. d->id = (uh->idgen << 8) | i;
  227. d->speed = Fullspeed;
  228. d->state = Enabled;
  229. XPRINT("calling devendpt in usbnewdevice\n");
  230. e = devendpt(d, 0, 1); /* always provide ctl endpt 0 */
  231. e->mode = ORDWR;
  232. e->epmode = Ctlmode; /* OHCI */
  233. e->epnewmode = Ctlmode; /* OHCI */
  234. e->sched = -1;
  235. uh->dev[i] = d;
  236. break;
  237. }
  238. poperror();
  239. qunlock(uh);
  240. return d;
  241. }
  242. static void
  243. freedev(Udev *d, int ept)
  244. {
  245. int i;
  246. Endpt *e;
  247. Usbhost *uh;
  248. uh = d->uh;
  249. if(decref(d) == 0){
  250. XPRINT("freedev 0x%p, 0\n", d);
  251. for(i=0; i<nelem(d->ep); i++)
  252. freept(d->ep[i]);
  253. if(d->x >= 0)
  254. uh->dev[d->x] = nil;
  255. free(d);
  256. } else {
  257. if(ept >= 0 && ept < nelem(d->ep)){
  258. e = d->ep[ept];
  259. XPRINT("freedev, freept 0x%p\n", e);
  260. if(e != nil)
  261. uh->epclose(uh, e);
  262. }
  263. }
  264. }
  265. static int
  266. usbgen(Chan *c, char *, Dirtab*, int, int s, Dir *dp)
  267. {
  268. Qid q;
  269. Udev *d;
  270. Endpt *e;
  271. Dirtab *tab;
  272. Usbhost *uh;
  273. int t, bus, slot, perm;
  274. /*
  275. * Top level directory contains the controller names.
  276. */
  277. if(c->qid.path == Qtopdir){
  278. if(s == DEVDOTDOT){
  279. mkqid(&q, Qtopdir, 0, QTDIR);
  280. devdir(c, q, "#U", 0, eve, 0555, dp);
  281. return 1;
  282. }
  283. if(s >= nelem(usbhost) || usbhost[s] == nil)
  284. return -1;
  285. mkqid(&q, PATH(Q2nd, 0, s), 0, QTDIR);
  286. snprint(up->genbuf, sizeof up->genbuf, "usb%d", s);
  287. devdir(c, q, up->genbuf, 0, eve, 0555, dp);
  288. return 1;
  289. }
  290. bus = CTLR(c->qid);
  291. if(bus >= nelem(usbhost) || (uh = usbhost[bus]) == nil)
  292. return -1;
  293. /*
  294. * Second level contains "new", "port", and a numbered
  295. * directory for each enumerated device on the bus.
  296. */
  297. t = TYPE(c->qid);
  298. if(t < Q3rd){
  299. if(s == DEVDOTDOT){
  300. mkqid(&q, Qtopdir, 0, QTDIR);
  301. devdir(c, q, "#U", 0, eve, 0555, dp);
  302. return 1;
  303. }
  304. if(s < nelem(usbdir2)){
  305. d = uh->dev[0];
  306. if(d == nil)
  307. return -1;
  308. tab = &usbdir2[s];
  309. mkqid(&q, PATH(tab->qid.path, 0, bus), d->id, QTFILE);
  310. devdir(c, q, tab->name, tab->length, eve, tab->perm, dp);
  311. return 1;
  312. }
  313. s -= nelem(usbdir2);
  314. if(s >= 0 && s < nelem(uh->dev)) {
  315. d = uh->dev[s];
  316. if(d == nil)
  317. return 0;
  318. snprint(up->genbuf, sizeof up->genbuf, "%d", s);
  319. mkqid(&q, PATH(Q3rd, s, bus), d->id, QTDIR);
  320. devdir(c, q, up->genbuf, 0, eve, 0555, dp);
  321. return 1;
  322. }
  323. return -1;
  324. }
  325. /*
  326. * Third level.
  327. */
  328. slot = SLOT(c->qid);
  329. if(s == DEVDOTDOT) {
  330. mkqid(&q, PATH(Q2nd, 0, bus), c->qid.vers, QTDIR);
  331. snprint(up->genbuf, sizeof up->genbuf, "usb%d", bus);
  332. devdir(c, q, up->genbuf, 0, eve, 0555, dp);
  333. return 1;
  334. }
  335. if(s < nelem(usbdir3)) {
  336. tab = &usbdir3[s];
  337. mkqid(&q, PATH(tab->qid.path, slot, bus), c->qid.vers, QTFILE);
  338. devdir(c, q, tab->name, tab->length, eve, tab->perm, dp);
  339. return 1;
  340. }
  341. s -= nelem(usbdir3);
  342. /* active endpoints */
  343. d = usbdeviceofslot(uh, slot);
  344. if(d == nil || s >= nelem(d->ep))
  345. return -1;
  346. if(s == 0 || (e = d->ep[s]) == nil) /* ep0data is called "setup" */
  347. return 0;
  348. snprint(up->genbuf, sizeof up->genbuf, "ep%ddata", s);
  349. mkqid(&q, PATH(Qep0+s, slot, bus), c->qid.vers, QTFILE);
  350. switch(e->mode){
  351. case OREAD:
  352. perm = 0444;
  353. break;
  354. case OWRITE:
  355. perm = 0222;
  356. break;
  357. default:
  358. perm = 0666;
  359. break;
  360. }
  361. devdir(c, q, up->genbuf, e->buffered, eve, perm, dp);
  362. return 1;
  363. }
  364. static Usbhost*
  365. usbprobe(int cardno, int ctlrno)
  366. {
  367. Usbhost *uh;
  368. char buf[128], *ebuf, name[64], *p, *type;
  369. uh = mallocz(sizeof *uh, 1);
  370. uh->tbdf = BUSUNKNOWN;
  371. if(cardno < 0){
  372. if(isaconfig("usb", ctlrno, uh) == 0){
  373. free(uh);
  374. return nil;
  375. }
  376. for(cardno = 0; usbtypes[cardno].type; cardno++){
  377. type = uh->type;
  378. if(type==nil || *type==0)
  379. type = "uhci";
  380. if(cistrcmp(usbtypes[cardno].type, type) == 0)
  381. break;
  382. }
  383. }
  384. if(cardno >= MaxUsb || usbtypes[cardno].type == nil ||
  385. usbtypes[cardno].reset(uh) < 0){
  386. free(uh);
  387. return nil;
  388. }
  389. /*
  390. * IRQ2 doesn't really exist, it's used to gang the interrupt
  391. * controllers together. A device set to IRQ2 will appear on
  392. * the second interrupt controller as IRQ9.
  393. */
  394. if(uh->irq == 2)
  395. uh->irq = 9;
  396. snprint(name, sizeof(name), "usb%d", ctlrno);
  397. intrenable(uh->irq, uh->interrupt, uh, uh->tbdf, name);
  398. ebuf = buf + sizeof buf;
  399. p = seprint(buf, ebuf, "#U/usb%d: %s: port 0x%luX irq %d",
  400. ctlrno, usbtypes[cardno].type, uh->port, uh->irq);
  401. if(uh->mem)
  402. p = seprint(p, ebuf, " addr 0x%luX", PADDR(uh->mem));
  403. if(uh->size)
  404. seprint(p, ebuf, " size 0x%luX", uh->size);
  405. print("%s\n", buf);
  406. return uh;
  407. }
  408. static void
  409. usbreset(void)
  410. {
  411. int cardno, ctlrno;
  412. Usbhost *uh;
  413. if(getconf("*nousbprobe"))
  414. return;
  415. for(ctlrno = 0; ctlrno < MaxUsb; ctlrno++)
  416. if((uh = usbprobe(-1, ctlrno)) != nil)
  417. usbhost[ctlrno] = uh;
  418. cardno = ctlrno = 0;
  419. while(usbtypes[cardno].type != nil && ctlrno < MaxUsb){
  420. if(usbhost[ctlrno] != nil){
  421. ctlrno++;
  422. continue;
  423. }
  424. if((uh = usbprobe(cardno, ctlrno)) == nil){
  425. cardno++;
  426. continue;
  427. }
  428. usbhost[ctlrno] = uh;
  429. ctlrno++;
  430. }
  431. }
  432. void
  433. usbinit(void)
  434. {
  435. Udev *d;
  436. int ctlrno;
  437. Usbhost *uh;
  438. for(ctlrno = 0; ctlrno < MaxUsb; ctlrno++){
  439. uh = usbhost[ctlrno];
  440. if(uh == nil)
  441. continue;
  442. if(uh->init != nil)
  443. uh->init(uh);
  444. /* reserve device for configuration */
  445. d = usbnewdevice(uh);
  446. incref(d);
  447. d->state = Attached;
  448. }
  449. }
  450. Chan *
  451. usbattach(char *spec)
  452. {
  453. return devattach('U', spec);
  454. }
  455. static Walkqid*
  456. usbwalk(Chan *c, Chan *nc, char **name, int nname)
  457. {
  458. return devwalk(c, nc, name, nname, nil, 0, usbgen);
  459. }
  460. static int
  461. usbstat(Chan *c, uchar *db, int n)
  462. {
  463. return devstat(c, db, n, nil, 0, usbgen);
  464. }
  465. Chan*
  466. usbopen(Chan *c, int omode)
  467. {
  468. Udev *d;
  469. Endpt *e;
  470. int f, s, type;
  471. Usbhost *uh;
  472. if(c->qid.type == QTDIR)
  473. return devopen(c, omode, nil, 0, usbgen);
  474. f = 0;
  475. type = TYPE(c->qid);
  476. if(type == Qnew){
  477. d = usbdevice(c);
  478. d = usbnewdevice(d->uh);
  479. XPRINT("usbopen, new dev 0x%p\n", d);
  480. if(d == nil) {
  481. XPRINT("usbopen failed (usbnewdevice)\n");
  482. error(Enodev);
  483. }
  484. type = Qctl;
  485. mkqid(&c->qid, PATH(type, d->x, CTLR(c->qid)), d->id, QTFILE);
  486. f = 1;
  487. }
  488. if(type < Q3rd){
  489. XPRINT("usbopen, devopen < Q3rd\n");
  490. return devopen(c, omode, nil, 0, usbgen);
  491. }
  492. d = usbdevice(c);
  493. uh = d->uh;
  494. qlock(uh);
  495. if(waserror()){
  496. qunlock(uh);
  497. nexterror();
  498. }
  499. switch(type){
  500. case Qctl:
  501. if(0&&d->busy)
  502. error(Einuse);
  503. d->busy = 1;
  504. if(!f)
  505. incref(d);
  506. XPRINT("usbopen, Qctl 0x%p\n", d);
  507. break;
  508. // case Qsetup: /* OHCI addition */
  509. // d = usbhdevice(c);
  510. // doopen(ub, d, 0);
  511. // incref(d);
  512. // break;
  513. default:
  514. s = type - Qep0;
  515. XPRINT("usbopen, default 0x%p, %d\n", d, s);
  516. if(s >= 0 && s < nelem(d->ep)){
  517. if((e = d->ep[s]) == nil) {
  518. XPRINT("usbopen failed (endpoint)\n");
  519. error(Enodev);
  520. }
  521. XPRINT("usbopen: dev 0x%p, ept 0x%p\n", d, e);
  522. uh->epopen(uh, e);
  523. e->foffset = 0;
  524. e->toffset = 0;
  525. e->poffset = 0;
  526. e->buffered = 0;
  527. }
  528. incref(d);
  529. break;
  530. }
  531. poperror();
  532. qunlock(uh);
  533. c->mode = openmode(omode);
  534. c->flag |= COPEN;
  535. c->offset = 0;
  536. return c;
  537. }
  538. void
  539. usbclose(Chan *c)
  540. {
  541. Udev *d;
  542. int ept, type;
  543. Usbhost *uh;
  544. type = TYPE(c->qid);
  545. if(c->qid.type == QTDIR || type < Q3rd)
  546. return;
  547. d = usbdevice(c);
  548. uh = d->uh;
  549. qlock(uh);
  550. if(waserror()){
  551. qunlock(uh);
  552. nexterror();
  553. }
  554. if(type == Qctl)
  555. d->busy = 0;
  556. XPRINT("usbclose: dev 0x%p\n", d);
  557. if(c->flag & COPEN){
  558. ept = (type != Qctl) ? type - Qep0 : -1;
  559. XPRINT("usbclose: freedev 0x%p\n", d);
  560. freedev(d, ept);
  561. }
  562. poperror();
  563. qunlock(uh);
  564. }
  565. static char *
  566. epstatus(char *s, char *se, Endpt *e, int i)
  567. {
  568. char *p;
  569. p = seprint(s, se, "%2d %#6.6lux %10lud bytes %10lud blocks\n",
  570. i, e->csp, e->nbytes, e->nblocks);
  571. if(e->epmode == Isomode){
  572. p = seprint(p, se, "bufsize %6d buffered %6d",
  573. e->maxpkt, e->buffered);
  574. if(e->toffset)
  575. p = seprint(p, se, " offset %10llud time %19lld\n",
  576. e->toffset, e->time);
  577. p = seprint(p, se, "\n");
  578. }
  579. return p;
  580. }
  581. long
  582. usbread(Chan *c, void *a, long n, vlong offset)
  583. {
  584. int t, i;
  585. Udev *d;
  586. Endpt *e;
  587. Usbhost *uh;
  588. char *s, *se, *p;
  589. if(c->qid.type == QTDIR)
  590. return devdirread(c, a, n, nil, 0, usbgen);
  591. d = usbdevice(c);
  592. uh = d->uh;
  593. t = TYPE(c->qid);
  594. if(t >= Qep0) {
  595. t -= Qep0;
  596. if(t >= nelem(d->ep))
  597. error(Eio);
  598. e = d->ep[t];
  599. if(e == nil || e->mode == OWRITE)
  600. error(Ewrongmode);
  601. if(t == 0) {
  602. if(e->epmode == Isomode)
  603. error(Eiso);
  604. if(e->override)
  605. e->override = 0;
  606. else
  607. e->rdata01 = 1;
  608. n = uh->read(uh, e, a, n, 0LL);
  609. if(e->setin){
  610. e->setin = 0;
  611. e->wdata01 = 1;
  612. uh->write(uh, e, "", 0, 0LL, uh->tokout);
  613. }
  614. return n;
  615. }
  616. return uh->read(uh, e, a, n, offset);
  617. }
  618. s = smalloc(READSTR);
  619. se = s+READSTR;
  620. if(waserror()){
  621. free(s);
  622. nexterror();
  623. }
  624. switch(t){
  625. case Qdebug:
  626. s[0] = '\0';
  627. if(uh->debug)
  628. uh->debug(uh, s, se);
  629. break;
  630. case Qport:
  631. uh->portinfo(uh, s, se);
  632. break;
  633. case Qctl:
  634. seprint(s, se, "%11d %11d\n", d->x, d->id);
  635. break;
  636. case Qstatus:
  637. if (d->did || d->vid)
  638. p = seprint(s, se, "%s %#6.6lux %#4.4ux %#4.4ux\n",
  639. devstates[d->state], d->csp, d->vid, d->did);
  640. else
  641. p = seprint(s, se, "%s %#6.6lux\n",
  642. devstates[d->state], d->csp);
  643. for(i=0; i<nelem(d->ep); i++) {
  644. e = d->ep[i];
  645. if(e == nil)
  646. continue;
  647. /* TO DO: freeze e */
  648. p = epstatus(p, se, e, i);
  649. }
  650. }
  651. n = readstr(offset, a, n, s);
  652. poperror();
  653. free(s);
  654. return n;
  655. }
  656. long
  657. usbwrite(Chan *c, void *a, long n, vlong offset)
  658. {
  659. Udev *d;
  660. Endpt *e;
  661. Cmdtab *ct;
  662. Cmdbuf *cb;
  663. Usbhost *uh;
  664. int id, nw, t, i;
  665. char cmd[50];
  666. if(c->qid.type == QTDIR)
  667. error(Eisdir);
  668. d = usbdevice(c);
  669. uh = d->uh;
  670. t = TYPE(c->qid);
  671. switch(t){
  672. case Qport:
  673. cb = parsecmd(a, n);
  674. if(waserror()){
  675. free(cb);
  676. nexterror();
  677. }
  678. ct = lookupcmd(cb, usbportmsg, nelem(usbportmsg));
  679. id = strtol(cb->f[1], nil, 0);
  680. switch(ct->index){
  681. case PMdisable:
  682. uh->portenable(uh, id, 0);
  683. break;
  684. case PMenable:
  685. uh->portenable(uh, id, 1);
  686. break;
  687. case PMreset:
  688. uh->portreset(uh, id);
  689. break;
  690. }
  691. poperror();
  692. free(cb);
  693. return n;
  694. case Qctl:
  695. cb = parsecmd(a, n);
  696. if(waserror()){
  697. free(cb);
  698. nexterror();
  699. }
  700. ct = lookupcmd(cb, usbctlmsg, nelem(usbctlmsg));
  701. switch(ct->index){
  702. case CMspeed:
  703. XPRINT("speed %s\n", cb->f[1]);
  704. if(strcmp(cb->f[1], "low") == 0)
  705. d->speed = Lowspeed;
  706. else if(strcmp(cb->f[1], "full") == 0)
  707. d->speed = Fullspeed;
  708. else if(strcmp(cb->f[1], "high") == 0)
  709. d->speed = Highspeed;
  710. else if(strtoul(cb->f[1], nil, 0) == 0)
  711. d->speed = Lowspeed;
  712. else
  713. d->speed = Fullspeed;
  714. for(i = 0; i < nelem(d->ep); i++)
  715. if(d->ep[i])
  716. uh->epmode(uh, d->ep[i]);
  717. break;
  718. case CMclass:
  719. if (cb->nf != 5 && cb->nf != 7)
  720. cmderror(cb, Ecmdargs);
  721. /*
  722. * class #ifc ept csp
  723. * (== class subclass proto) [vendor product]
  724. */
  725. d->npt = strtoul(cb->f[1], nil, 0); /* # of interfaces */
  726. i = strtoul(cb->f[2], nil, 0); /* endpoint */
  727. if (i < 0 || i >= nelem(d->ep) ||
  728. d->npt > nelem(d->ep) || i >= d->npt)
  729. cmderror(cb, Ebadusbmsg);
  730. if(cb->nf == 7){
  731. d->vid = strtoul(cb->f[5], nil, 0);
  732. d->did = strtoul(cb->f[6], nil, 0);
  733. }
  734. if (i == 0)
  735. d->csp = strtoul(cb->f[3], nil, 0);
  736. if(d->ep[i] == nil){
  737. XPRINT("calling devendpt in usbwrite (CMclass)\n");
  738. d->ep[i] = devendpt(d, i, 1);
  739. }
  740. d->ep[i]->csp = strtoul(cb->f[3], nil, 0);
  741. d->ep[i]->maxpkt = strtoul(cb->f[4], nil, 0);
  742. if(uh->epmaxpkt)
  743. uh->epmaxpkt(uh, d->ep[i]);
  744. break;
  745. case CMdata:
  746. i = strtoul(cb->f[1], nil, 0);
  747. if(i < 0 || i >= nelem(d->ep) || d->ep[i] == nil)
  748. error(Ebadusbmsg);
  749. e = d->ep[i];
  750. e->wdata01 = e->rdata01 = strtoul(cb->f[2], nil, 0) != 0;
  751. e->override = 1;
  752. break;
  753. case CMmaxpkt:
  754. i = strtoul(cb->f[1], nil, 0);
  755. if(i < 0 || i >= nelem(d->ep) || d->ep[i] == nil)
  756. error(Ebadusbmsg);
  757. e = d->ep[i];
  758. e->maxpkt = strtoul(cb->f[2], nil, 0);
  759. if(e->maxpkt > 1500)
  760. e->maxpkt = 1500;
  761. if(uh->epmaxpkt)
  762. uh->epmaxpkt(uh, e);
  763. break;
  764. case CMadjust:
  765. i = strtoul(cb->f[1], nil, 0);
  766. if(i < 0 || i >= nelem(d->ep) || d->ep[i] == nil)
  767. error(Ebadusbmsg);
  768. e = d->ep[i];
  769. if(e->epmode != Isomode)
  770. error(Eperm);
  771. i = strtoul(cb->f[2], nil, 0);
  772. /* speed may not result in change of maxpkt */
  773. if (i < (e->maxpkt-1)/e->samplesz * 1000/e->pollms
  774. || i > e->maxpkt/e->samplesz * 1000/e->pollms){
  775. snprint(cmd, sizeof(cmd), "%d < %d < %d?",
  776. (e->maxpkt-1)/e->samplesz * 1000/e->pollms,
  777. i,
  778. e->maxpkt/e->samplesz * 1000/e->pollms);
  779. error(cmd);
  780. }
  781. e->hz = i;
  782. break;
  783. case CMdebug:
  784. i = strtoul(cb->f[1], nil, 0);
  785. if(i < -1 || i >= nelem(d->ep) || d->ep[i] == nil)
  786. error(Ebadusbmsg);
  787. if (i == -1)
  788. debug = 0;
  789. else {
  790. debug = 1;
  791. e = d->ep[i];
  792. e->debug = strtoul(cb->f[2], nil, 0);
  793. }
  794. break;
  795. case CMunstall:
  796. i = strtoul(cb->f[1], nil, 0);
  797. if(i < 0 || i >= nelem(d->ep) || d->ep[i] == nil)
  798. error(Ebadusbmsg);
  799. e = d->ep[i];
  800. e->dir[Dirout].err = e->dir[Dirin].err = nil;
  801. break;
  802. case CMep:
  803. /* Ctlmode: ep n `ctl' mode maxpkt nbuf OR
  804. * Bulkmode: ep n `bulk' mode maxpkt nbuf OR
  805. * Isomode: ep n period mode samplesize Hz OR
  806. * Intrmode: ep n period mode maxpkt
  807. */
  808. if(cb->nf < 3)
  809. error(Ecmdargs);
  810. i = strtoul(cb->f[1], nil, 0);
  811. if(i < 0 || i >= nelem(d->ep)) {
  812. XPRINT("field 1: 0 <= %d < %d\n",
  813. i, nelem(d->ep));
  814. error(Ebadarg);
  815. }
  816. if((e = d->ep[i]) == nil){
  817. XPRINT("calling devendpt in usbwrite (CMep)\n");
  818. e = devendpt(d, i, 1);
  819. }
  820. qlock(uh);
  821. if(e->active){
  822. qunlock(uh);
  823. error(Eperm);
  824. }
  825. if(waserror()){
  826. freept(e);
  827. qunlock(uh);
  828. nexterror();
  829. }
  830. if(strcmp(cb->f[2], "bulk") == 0){
  831. /* ep n `bulk' mode maxpkt nbuf */
  832. if(cb->nf != 6)
  833. error(Ecmdargs);
  834. i = strtoul(cb->f[4], nil, 0);
  835. if(i < 1 || i > 1023){
  836. XPRINT("maxpkt: 1 <= %d < 1024\n", i);
  837. error(Ebadarg);
  838. }
  839. e->maxpkt = i;
  840. i = strtoul(cb->f[5], nil, 0);
  841. if(i < 1 || i > 32){
  842. XPRINT("nbuf: 1 <= %d <= 32\n", i);
  843. error(Ebadarg);
  844. }
  845. e->nbuf = i;
  846. e->epnewmode = Bulkmode;
  847. }else if(strcmp(cb->f[2], "ctl") == 0){
  848. /* ep n `ctl' mode maxpkt nbuf */
  849. if(cb->nf != 6)
  850. error(Ecmdargs);
  851. i = strtoul(cb->f[4], nil, 0);
  852. if(i < 8 || i > 1023){
  853. XPRINT("maxpkt: 8 <= %d < 1024\n", i);
  854. error(Ebadarg);
  855. }
  856. e->maxpkt = i;
  857. i = strtoul(cb->f[5], nil, 0);
  858. if(i < 1 || i > 32){
  859. XPRINT("nbuf: 1 <= %d <= 32\n", i);
  860. error(Ebadarg);
  861. }
  862. e->nbuf = i;
  863. e->epnewmode = Ctlmode;
  864. }else if(cb->nf == 5){
  865. /* ep n period mode maxpkt */
  866. i = strtoul(cb->f[2], nil, 0);
  867. if(i > 0 && i <= 1000){
  868. e->pollms = i;
  869. }else {
  870. XPRINT("pollms: 0 <= %d <= 1000\n", i);
  871. error(Ebadarg);
  872. }
  873. i = strtoul(cb->f[4], nil, 0);
  874. if(i >= 1 && i < 256){
  875. e->maxpkt = i;
  876. }else {
  877. XPRINT("maxpkt: 0 < %d <= 8\n", i);
  878. error(Ebadarg);
  879. }
  880. e->nbuf = 1; /* just in case */
  881. e->epnewmode = Intrmode;
  882. }else if(cb->nf == 6){
  883. /* ep n period mode samplesize Hz */
  884. i = strtoul(cb->f[2], nil, 0);
  885. if(i > 0 && i <= 1000){
  886. e->pollms = i;
  887. }else {
  888. XPRINT("Hz: 0 <= %d <= 1000\n", i);
  889. error(Ebadarg);
  890. }
  891. i = strtoul(cb->f[4], nil, 0);
  892. if(i >= 1 && i <= 8){
  893. e->samplesz = i;
  894. }else {
  895. XPRINT("samplesize: 0 < %d <= 8\n", i);
  896. error(Ebadarg);
  897. }
  898. i = strtoul(cb->f[5], nil, 0);
  899. if(i >= 1 && i*e->samplesz <= 12*1000*1000){
  900. /* Hz */
  901. e->hz = i;
  902. e->remain = 0;
  903. }else {
  904. XPRINT("field 6: 1 < %d <= 100000 Hz\n", i);
  905. error(Ebadarg);
  906. }
  907. e->maxpkt = (e->hz*e->pollms + 999)/1000 *
  908. e->samplesz;
  909. e->epnewmode = Isomode;
  910. }else
  911. error(Ecmdargs);
  912. e->mode = strcmp(cb->f[3],"r") == 0? OREAD:
  913. strcmp(cb->f[3],"w") == 0? OWRITE: ORDWR;
  914. uh->epmode(uh, e);
  915. poperror();
  916. qunlock(uh);
  917. }
  918. poperror();
  919. free(cb);
  920. return n;
  921. case Qep0: /* SETUP endpoint 0 */
  922. /* should canqlock etc */
  923. e = d->ep[0];
  924. if(e == nil || e->epmode == Isomode)
  925. error(Eiso);
  926. if(n < 8)
  927. error(Eio);
  928. nw = *(uchar*)a & RD2H;
  929. if(e->override)
  930. e->override = 0;
  931. else
  932. e->wdata01 = 0;
  933. n = uh->write(uh, e, a, n, 0LL, uh->toksetup);
  934. if(nw == 0){ /* host to device: use IN[DATA1] to ack */
  935. e->rdata01 = 1;
  936. nw = uh->read(uh, e, cmd, 0LL, 8);
  937. if(nw != 0)
  938. error(Eio); /* could provide more status */
  939. }else
  940. e->setin = 1; /* two-phase */
  941. break;
  942. default: /* sends DATA[01] */
  943. t -= Qep0;
  944. if(t < 0 || t >= nelem(d->ep))
  945. error(Eeprange);
  946. e = d->ep[t];
  947. if(e == nil || e->mode == OREAD)
  948. error(Ewrongmode);
  949. n = uh->write(uh, e, a, n, offset, uh->tokout);
  950. break;
  951. }
  952. return n;
  953. }
  954. Dev usbdevtab = {
  955. 'U',
  956. "usb",
  957. usbreset,
  958. usbinit,
  959. devshutdown,
  960. usbattach,
  961. usbwalk,
  962. usbstat,
  963. usbopen,
  964. devcreate,
  965. usbclose,
  966. usbread,
  967. devbread,
  968. usbwrite,
  969. devbwrite,
  970. devremove,
  971. devwstat,
  972. };