ehci.c revision 1.206
1 /* $NetBSD: ehci.c,v 1.206 2013/04/04 13:27:55 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2004-2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net), Charles M. Hannum, 9 * Jeremy Morse (jeremy.morse (at) gmail.com), Jared D. McNeill 10 * (jmcneill (at) invisible.ca) and Matthew R. Green (mrg (at) eterna.com.au). 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 36 * 37 * The EHCI 1.0 spec can be found at 38 * http://www.intel.com/technology/usb/spec.htm 39 * and the USB 2.0 spec at 40 * http://www.usb.org/developers/docs/ 41 * 42 */ 43 44 /* 45 * TODO: 46 * 1) hold off explorations by companion controllers until ehci has started. 47 * 48 * 2) The hub driver needs to handle and schedule the transaction translator, 49 * to assign place in frame where different devices get to go. See chapter 50 * on hubs in USB 2.0 for details. 51 * 52 * 3) Command failures are not recovered correctly. 53 */ 54 55 #include <sys/cdefs.h> 56 __KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.206 2013/04/04 13:27:55 skrll Exp $"); 57 58 #include "ohci.h" 59 #include "uhci.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/kmem.h> 65 #include <sys/device.h> 66 #include <sys/select.h> 67 #include <sys/proc.h> 68 #include <sys/queue.h> 69 #include <sys/mutex.h> 70 #include <sys/bus.h> 71 #include <sys/cpu.h> 72 73 #include <machine/endian.h> 74 75 #include <dev/usb/usb.h> 76 #include <dev/usb/usbdi.h> 77 #include <dev/usb/usbdivar.h> 78 #include <dev/usb/usb_mem.h> 79 #include <dev/usb/usb_quirks.h> 80 81 #include <dev/usb/ehcireg.h> 82 #include <dev/usb/ehcivar.h> 83 #include <dev/usb/usbroothub_subr.h> 84 85 #ifdef EHCI_DEBUG 86 static void __printflike(1, 2) 87 ehciprintf(const char *fmt, ...) 88 { 89 va_list ap; 90 91 va_start(ap, fmt); 92 vprintf(fmt, ap); 93 va_end(ap); 94 } 95 96 #define DPRINTF(x) do { if (ehcidebug) ehciprintf x; } while(0) 97 #define DPRINTFN(n,x) do { if (ehcidebug>(n)) ehciprintf x; } while (0) 98 int ehcidebug = 0; 99 #else 100 #define DPRINTF(x) 101 #define DPRINTFN(n,x) 102 #endif 103 104 struct ehci_pipe { 105 struct usbd_pipe pipe; 106 int nexttoggle; 107 108 ehci_soft_qh_t *sqh; 109 union { 110 ehci_soft_qtd_t *qtd; 111 /* ehci_soft_itd_t *itd; */ 112 } tail; 113 union { 114 /* Control pipe */ 115 struct { 116 usb_dma_t reqdma; 117 } ctl; 118 /* Interrupt pipe */ 119 struct { 120 u_int length; 121 } intr; 122 /* Bulk pipe */ 123 struct { 124 u_int length; 125 } bulk; 126 /* Iso pipe */ 127 struct { 128 u_int next_frame; 129 u_int cur_xfers; 130 } isoc; 131 } u; 132 }; 133 134 Static usbd_status ehci_open(usbd_pipe_handle); 135 Static void ehci_poll(struct usbd_bus *); 136 Static void ehci_softintr(void *); 137 Static int ehci_intr1(ehci_softc_t *); 138 Static void ehci_waitintr(ehci_softc_t *, usbd_xfer_handle); 139 Static void ehci_check_intr(ehci_softc_t *, struct ehci_xfer *); 140 Static void ehci_check_qh_intr(ehci_softc_t *, struct ehci_xfer *); 141 Static void ehci_check_itd_intr(ehci_softc_t *, struct ehci_xfer *); 142 Static void ehci_idone(struct ehci_xfer *); 143 Static void ehci_timeout(void *); 144 Static void ehci_timeout_task(void *); 145 Static void ehci_intrlist_timeout(void *); 146 Static void ehci_doorbell(void *); 147 Static void ehci_pcd(void *); 148 149 Static usbd_status ehci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t); 150 Static void ehci_freem(struct usbd_bus *, usb_dma_t *); 151 152 Static usbd_xfer_handle ehci_allocx(struct usbd_bus *); 153 Static void ehci_freex(struct usbd_bus *, usbd_xfer_handle); 154 Static void ehci_get_lock(struct usbd_bus *, kmutex_t **); 155 156 Static usbd_status ehci_root_ctrl_transfer(usbd_xfer_handle); 157 Static usbd_status ehci_root_ctrl_start(usbd_xfer_handle); 158 Static void ehci_root_ctrl_abort(usbd_xfer_handle); 159 Static void ehci_root_ctrl_close(usbd_pipe_handle); 160 Static void ehci_root_ctrl_done(usbd_xfer_handle); 161 162 Static usbd_status ehci_root_intr_transfer(usbd_xfer_handle); 163 Static usbd_status ehci_root_intr_start(usbd_xfer_handle); 164 Static void ehci_root_intr_abort(usbd_xfer_handle); 165 Static void ehci_root_intr_close(usbd_pipe_handle); 166 Static void ehci_root_intr_done(usbd_xfer_handle); 167 168 Static usbd_status ehci_device_ctrl_transfer(usbd_xfer_handle); 169 Static usbd_status ehci_device_ctrl_start(usbd_xfer_handle); 170 Static void ehci_device_ctrl_abort(usbd_xfer_handle); 171 Static void ehci_device_ctrl_close(usbd_pipe_handle); 172 Static void ehci_device_ctrl_done(usbd_xfer_handle); 173 174 Static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle); 175 Static usbd_status ehci_device_bulk_start(usbd_xfer_handle); 176 Static void ehci_device_bulk_abort(usbd_xfer_handle); 177 Static void ehci_device_bulk_close(usbd_pipe_handle); 178 Static void ehci_device_bulk_done(usbd_xfer_handle); 179 180 Static usbd_status ehci_device_intr_transfer(usbd_xfer_handle); 181 Static usbd_status ehci_device_intr_start(usbd_xfer_handle); 182 Static void ehci_device_intr_abort(usbd_xfer_handle); 183 Static void ehci_device_intr_close(usbd_pipe_handle); 184 Static void ehci_device_intr_done(usbd_xfer_handle); 185 186 Static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle); 187 Static usbd_status ehci_device_isoc_start(usbd_xfer_handle); 188 Static void ehci_device_isoc_abort(usbd_xfer_handle); 189 Static void ehci_device_isoc_close(usbd_pipe_handle); 190 Static void ehci_device_isoc_done(usbd_xfer_handle); 191 192 Static void ehci_device_clear_toggle(usbd_pipe_handle pipe); 193 Static void ehci_noop(usbd_pipe_handle pipe); 194 195 Static void ehci_disown(ehci_softc_t *, int, int); 196 197 Static ehci_soft_qh_t *ehci_alloc_sqh(ehci_softc_t *); 198 Static void ehci_free_sqh(ehci_softc_t *, ehci_soft_qh_t *); 199 200 Static ehci_soft_qtd_t *ehci_alloc_sqtd(ehci_softc_t *); 201 Static void ehci_free_sqtd(ehci_softc_t *, ehci_soft_qtd_t *); 202 Static usbd_status ehci_alloc_sqtd_chain(struct ehci_pipe *, 203 ehci_softc_t *, int, int, usbd_xfer_handle, 204 ehci_soft_qtd_t **, ehci_soft_qtd_t **); 205 Static void ehci_free_sqtd_chain(ehci_softc_t *, ehci_soft_qtd_t *, 206 ehci_soft_qtd_t *); 207 208 Static ehci_soft_itd_t *ehci_alloc_itd(ehci_softc_t *sc); 209 Static void ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd); 210 Static void ehci_rem_free_itd_chain(ehci_softc_t *sc, 211 struct ehci_xfer *exfer); 212 Static void ehci_abort_isoc_xfer(usbd_xfer_handle xfer, 213 usbd_status status); 214 215 Static usbd_status ehci_device_request(usbd_xfer_handle xfer); 216 217 Static usbd_status ehci_device_setintr(ehci_softc_t *, ehci_soft_qh_t *, 218 int ival); 219 220 Static void ehci_add_qh(ehci_softc_t *, ehci_soft_qh_t *, 221 ehci_soft_qh_t *); 222 Static void ehci_rem_qh(ehci_softc_t *, ehci_soft_qh_t *, 223 ehci_soft_qh_t *); 224 Static void ehci_set_qh_qtd(ehci_soft_qh_t *, ehci_soft_qtd_t *); 225 Static void ehci_sync_hc(ehci_softc_t *); 226 227 Static void ehci_close_pipe(usbd_pipe_handle, ehci_soft_qh_t *); 228 Static void ehci_abort_xfer(usbd_xfer_handle, usbd_status); 229 230 #ifdef EHCI_DEBUG 231 Static void ehci_dump_regs(ehci_softc_t *); 232 void ehci_dump(void); 233 Static ehci_softc_t *theehci; 234 Static void ehci_dump_link(ehci_link_t, int); 235 Static void ehci_dump_sqtds(ehci_soft_qtd_t *); 236 Static void ehci_dump_sqtd(ehci_soft_qtd_t *); 237 Static void ehci_dump_qtd(ehci_qtd_t *); 238 Static void ehci_dump_sqh(ehci_soft_qh_t *); 239 #if notyet 240 Static void ehci_dump_sitd(struct ehci_soft_itd *itd); 241 Static void ehci_dump_itd(struct ehci_soft_itd *); 242 #endif 243 #ifdef DIAGNOSTIC 244 Static void ehci_dump_exfer(struct ehci_xfer *); 245 #endif 246 #endif 247 248 #define EHCI_NULL htole32(EHCI_LINK_TERMINATE) 249 250 #define EHCI_INTR_ENDPT 1 251 252 #define ehci_add_intr_list(sc, ex) \ 253 TAILQ_INSERT_TAIL(&(sc)->sc_intrhead, (ex), inext); 254 #define ehci_del_intr_list(sc, ex) \ 255 do { \ 256 TAILQ_REMOVE(&sc->sc_intrhead, (ex), inext); \ 257 (ex)->inext.tqe_prev = NULL; \ 258 } while (0) 259 #define ehci_active_intr_list(ex) ((ex)->inext.tqe_prev != NULL) 260 261 Static const struct usbd_bus_methods ehci_bus_methods = { 262 .open_pipe = ehci_open, 263 .soft_intr = ehci_softintr, 264 .do_poll = ehci_poll, 265 .allocm = ehci_allocm, 266 .freem = ehci_freem, 267 .allocx = ehci_allocx, 268 .freex = ehci_freex, 269 .get_lock = ehci_get_lock, 270 }; 271 272 Static const struct usbd_pipe_methods ehci_root_ctrl_methods = { 273 .transfer = ehci_root_ctrl_transfer, 274 .start = ehci_root_ctrl_start, 275 .abort = ehci_root_ctrl_abort, 276 .close = ehci_root_ctrl_close, 277 .cleartoggle = ehci_noop, 278 .done = ehci_root_ctrl_done, 279 }; 280 281 Static const struct usbd_pipe_methods ehci_root_intr_methods = { 282 .transfer = ehci_root_intr_transfer, 283 .start = ehci_root_intr_start, 284 .abort = ehci_root_intr_abort, 285 .close = ehci_root_intr_close, 286 .cleartoggle = ehci_noop, 287 .done = ehci_root_intr_done, 288 }; 289 290 Static const struct usbd_pipe_methods ehci_device_ctrl_methods = { 291 .transfer = ehci_device_ctrl_transfer, 292 .start = ehci_device_ctrl_start, 293 .abort = ehci_device_ctrl_abort, 294 .close = ehci_device_ctrl_close, 295 .cleartoggle = ehci_noop, 296 .done = ehci_device_ctrl_done, 297 }; 298 299 Static const struct usbd_pipe_methods ehci_device_intr_methods = { 300 .transfer = ehci_device_intr_transfer, 301 .start = ehci_device_intr_start, 302 .abort = ehci_device_intr_abort, 303 .close = ehci_device_intr_close, 304 .cleartoggle = ehci_device_clear_toggle, 305 .done = ehci_device_intr_done, 306 }; 307 308 Static const struct usbd_pipe_methods ehci_device_bulk_methods = { 309 .transfer = ehci_device_bulk_transfer, 310 .start = ehci_device_bulk_start, 311 .abort = ehci_device_bulk_abort, 312 .close = ehci_device_bulk_close, 313 .cleartoggle = ehci_device_clear_toggle, 314 .done = ehci_device_bulk_done, 315 }; 316 317 Static const struct usbd_pipe_methods ehci_device_isoc_methods = { 318 .transfer = ehci_device_isoc_transfer, 319 .start = ehci_device_isoc_start, 320 .abort = ehci_device_isoc_abort, 321 .close = ehci_device_isoc_close, 322 .cleartoggle = ehci_noop, 323 .done = ehci_device_isoc_done, 324 }; 325 326 static const uint8_t revbits[EHCI_MAX_POLLRATE] = { 327 0x00,0x40,0x20,0x60,0x10,0x50,0x30,0x70,0x08,0x48,0x28,0x68,0x18,0x58,0x38,0x78, 328 0x04,0x44,0x24,0x64,0x14,0x54,0x34,0x74,0x0c,0x4c,0x2c,0x6c,0x1c,0x5c,0x3c,0x7c, 329 0x02,0x42,0x22,0x62,0x12,0x52,0x32,0x72,0x0a,0x4a,0x2a,0x6a,0x1a,0x5a,0x3a,0x7a, 330 0x06,0x46,0x26,0x66,0x16,0x56,0x36,0x76,0x0e,0x4e,0x2e,0x6e,0x1e,0x5e,0x3e,0x7e, 331 0x01,0x41,0x21,0x61,0x11,0x51,0x31,0x71,0x09,0x49,0x29,0x69,0x19,0x59,0x39,0x79, 332 0x05,0x45,0x25,0x65,0x15,0x55,0x35,0x75,0x0d,0x4d,0x2d,0x6d,0x1d,0x5d,0x3d,0x7d, 333 0x03,0x43,0x23,0x63,0x13,0x53,0x33,0x73,0x0b,0x4b,0x2b,0x6b,0x1b,0x5b,0x3b,0x7b, 334 0x07,0x47,0x27,0x67,0x17,0x57,0x37,0x77,0x0f,0x4f,0x2f,0x6f,0x1f,0x5f,0x3f,0x7f, 335 }; 336 337 usbd_status 338 ehci_init(ehci_softc_t *sc) 339 { 340 u_int32_t vers, sparams, cparams, hcr; 341 u_int i; 342 usbd_status err; 343 ehci_soft_qh_t *sqh; 344 u_int ncomp; 345 346 DPRINTF(("ehci_init: start\n")); 347 #ifdef EHCI_DEBUG 348 theehci = sc; 349 #endif 350 351 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 352 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED); 353 cv_init(&sc->sc_softwake_cv, "ehciab"); 354 cv_init(&sc->sc_doorbell, "ehcidi"); 355 356 sc->sc_xferpool = pool_cache_init(sizeof(struct ehci_xfer), 0, 0, 0, 357 "ehcixfer", NULL, IPL_USB, NULL, NULL, NULL); 358 359 sc->sc_doorbell_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 360 ehci_doorbell, sc); 361 sc->sc_pcd_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 362 ehci_pcd, sc); 363 364 sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); 365 366 vers = EREAD2(sc, EHCI_HCIVERSION); 367 aprint_verbose("%s: EHCI version %x.%x\n", device_xname(sc->sc_dev), 368 vers >> 8, vers & 0xff); 369 370 sparams = EREAD4(sc, EHCI_HCSPARAMS); 371 DPRINTF(("ehci_init: sparams=0x%x\n", sparams)); 372 sc->sc_npcomp = EHCI_HCS_N_PCC(sparams); 373 ncomp = EHCI_HCS_N_CC(sparams); 374 if (ncomp != sc->sc_ncomp) { 375 aprint_verbose("%s: wrong number of companions (%d != %d)\n", 376 device_xname(sc->sc_dev), ncomp, sc->sc_ncomp); 377 #if NOHCI == 0 || NUHCI == 0 378 aprint_error("%s: ohci or uhci probably not configured\n", 379 device_xname(sc->sc_dev)); 380 #endif 381 if (ncomp < sc->sc_ncomp) 382 sc->sc_ncomp = ncomp; 383 } 384 if (sc->sc_ncomp > 0) { 385 KASSERT(!(sc->sc_flags & EHCIF_ETTF)); 386 aprint_normal("%s: companion controller%s, %d port%s each:", 387 device_xname(sc->sc_dev), sc->sc_ncomp!=1 ? "s" : "", 388 EHCI_HCS_N_PCC(sparams), 389 EHCI_HCS_N_PCC(sparams)!=1 ? "s" : ""); 390 for (i = 0; i < sc->sc_ncomp; i++) 391 aprint_normal(" %s", device_xname(sc->sc_comps[i])); 392 aprint_normal("\n"); 393 } 394 sc->sc_noport = EHCI_HCS_N_PORTS(sparams); 395 cparams = EREAD4(sc, EHCI_HCCPARAMS); 396 DPRINTF(("ehci_init: cparams=0x%x\n", cparams)); 397 sc->sc_hasppc = EHCI_HCS_PPC(sparams); 398 399 if (EHCI_HCC_64BIT(cparams)) { 400 /* MUST clear segment register if 64 bit capable. */ 401 EWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); 402 } 403 404 sc->sc_bus.usbrev = USBREV_2_0; 405 406 usb_setup_reserve(sc->sc_dev, &sc->sc_dma_reserve, sc->sc_bus.dmatag, 407 USB_MEM_RESERVE); 408 409 /* Reset the controller */ 410 DPRINTF(("%s: resetting\n", device_xname(sc->sc_dev))); 411 EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ 412 usb_delay_ms(&sc->sc_bus, 1); 413 EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); 414 for (i = 0; i < 100; i++) { 415 usb_delay_ms(&sc->sc_bus, 1); 416 hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET; 417 if (!hcr) 418 break; 419 } 420 if (hcr) { 421 aprint_error("%s: reset timeout\n", device_xname(sc->sc_dev)); 422 return (USBD_IOERROR); 423 } 424 if (sc->sc_vendor_init) 425 sc->sc_vendor_init(sc); 426 427 /* 428 * If we are doing embedded transaction translation function, force 429 * the controller to host mode. 430 */ 431 if (sc->sc_flags & EHCIF_ETTF) { 432 uint32_t usbmode = EREAD4(sc, EHCI_USBMODE); 433 usbmode &= ~EHCI_USBMODE_CM; 434 usbmode |= EHCI_USBMODE_CM_HOST; 435 EWRITE4(sc, EHCI_USBMODE, usbmode); 436 } 437 438 /* XXX need proper intr scheduling */ 439 sc->sc_rand = 96; 440 441 /* frame list size at default, read back what we got and use that */ 442 switch (EHCI_CMD_FLS(EOREAD4(sc, EHCI_USBCMD))) { 443 case 0: sc->sc_flsize = 1024; break; 444 case 1: sc->sc_flsize = 512; break; 445 case 2: sc->sc_flsize = 256; break; 446 case 3: return (USBD_IOERROR); 447 } 448 err = usb_allocmem(&sc->sc_bus, sc->sc_flsize * sizeof(ehci_link_t), 449 EHCI_FLALIGN_ALIGN, &sc->sc_fldma); 450 if (err) 451 return (err); 452 DPRINTF(("%s: flsize=%d\n", device_xname(sc->sc_dev),sc->sc_flsize)); 453 sc->sc_flist = KERNADDR(&sc->sc_fldma, 0); 454 455 for (i = 0; i < sc->sc_flsize; i++) { 456 sc->sc_flist[i] = EHCI_NULL; 457 } 458 459 EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); 460 461 sc->sc_softitds = kmem_zalloc(sc->sc_flsize * sizeof(ehci_soft_itd_t *), 462 KM_SLEEP); 463 if (sc->sc_softitds == NULL) 464 return ENOMEM; 465 LIST_INIT(&sc->sc_freeitds); 466 TAILQ_INIT(&sc->sc_intrhead); 467 468 /* Set up the bus struct. */ 469 sc->sc_bus.methods = &ehci_bus_methods; 470 sc->sc_bus.pipe_size = sizeof(struct ehci_pipe); 471 472 sc->sc_eintrs = EHCI_NORMAL_INTRS; 473 474 /* 475 * Allocate the interrupt dummy QHs. These are arranged to give poll 476 * intervals that are powers of 2 times 1ms. 477 */ 478 for (i = 0; i < EHCI_INTRQHS; i++) { 479 sqh = ehci_alloc_sqh(sc); 480 if (sqh == NULL) { 481 err = USBD_NOMEM; 482 goto bad1; 483 } 484 sc->sc_islots[i].sqh = sqh; 485 } 486 for (i = 0; i < EHCI_INTRQHS; i++) { 487 sqh = sc->sc_islots[i].sqh; 488 if (i == 0) { 489 /* The last (1ms) QH terminates. */ 490 sqh->qh.qh_link = EHCI_NULL; 491 sqh->next = NULL; 492 } else { 493 /* Otherwise the next QH has half the poll interval */ 494 sqh->next = sc->sc_islots[(i + 1) / 2 - 1].sqh; 495 sqh->qh.qh_link = htole32(sqh->next->physaddr | 496 EHCI_LINK_QH); 497 } 498 sqh->qh.qh_endp = htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH)); 499 sqh->qh.qh_curqtd = EHCI_NULL; 500 sqh->next = NULL; 501 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 502 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 503 sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); 504 sqh->sqtd = NULL; 505 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 506 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 507 } 508 /* Point the frame list at the last level (128ms). */ 509 for (i = 0; i < sc->sc_flsize; i++) { 510 int j; 511 512 j = (i & ~(EHCI_MAX_POLLRATE-1)) | 513 revbits[i & (EHCI_MAX_POLLRATE-1)]; 514 sc->sc_flist[j] = htole32(EHCI_LINK_QH | 515 sc->sc_islots[EHCI_IQHIDX(EHCI_IPOLLRATES - 1, 516 i)].sqh->physaddr); 517 } 518 usb_syncmem(&sc->sc_fldma, 0, sc->sc_flsize * sizeof(ehci_link_t), 519 BUS_DMASYNC_PREWRITE); 520 521 /* Allocate dummy QH that starts the async list. */ 522 sqh = ehci_alloc_sqh(sc); 523 if (sqh == NULL) { 524 err = USBD_NOMEM; 525 goto bad1; 526 } 527 /* Fill the QH */ 528 sqh->qh.qh_endp = 529 htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL); 530 sqh->qh.qh_link = 531 htole32(sqh->physaddr | EHCI_LINK_QH); 532 sqh->qh.qh_curqtd = EHCI_NULL; 533 sqh->next = NULL; 534 /* Fill the overlay qTD */ 535 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 536 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 537 sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); 538 sqh->sqtd = NULL; 539 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 540 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 541 #ifdef EHCI_DEBUG 542 if (ehcidebug) { 543 ehci_dump_sqh(sqh); 544 } 545 #endif 546 547 /* Point to async list */ 548 sc->sc_async_head = sqh; 549 EOWRITE4(sc, EHCI_ASYNCLISTADDR, sqh->physaddr | EHCI_LINK_QH); 550 551 callout_init(&sc->sc_tmo_intrlist, CALLOUT_MPSAFE); 552 553 /* Turn on controller */ 554 EOWRITE4(sc, EHCI_USBCMD, 555 EHCI_CMD_ITC_2 | /* 2 microframes interrupt delay */ 556 (EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_FLS_M) | 557 EHCI_CMD_ASE | 558 EHCI_CMD_PSE | 559 EHCI_CMD_RS); 560 561 /* Take over port ownership */ 562 EOWRITE4(sc, EHCI_CONFIGFLAG, EHCI_CONF_CF); 563 564 for (i = 0; i < 100; i++) { 565 usb_delay_ms(&sc->sc_bus, 1); 566 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 567 if (!hcr) 568 break; 569 } 570 if (hcr) { 571 aprint_error("%s: run timeout\n", device_xname(sc->sc_dev)); 572 return (USBD_IOERROR); 573 } 574 575 /* Enable interrupts */ 576 DPRINTFN(1,("ehci_init: enabling\n")); 577 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 578 579 return (USBD_NORMAL_COMPLETION); 580 581 #if 0 582 bad2: 583 ehci_free_sqh(sc, sc->sc_async_head); 584 #endif 585 bad1: 586 usb_freemem(&sc->sc_bus, &sc->sc_fldma); 587 return (err); 588 } 589 590 int 591 ehci_intr(void *v) 592 { 593 ehci_softc_t *sc = v; 594 int ret = 0; 595 596 if (sc == NULL) 597 return 0; 598 599 mutex_spin_enter(&sc->sc_intr_lock); 600 601 if (sc->sc_dying || !device_has_power(sc->sc_dev)) 602 goto done; 603 604 /* If we get an interrupt while polling, then just ignore it. */ 605 if (sc->sc_bus.use_polling) { 606 u_int32_t intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 607 608 if (intrs) 609 EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ 610 #ifdef DIAGNOSTIC 611 DPRINTFN(16, ("ehci_intr: ignored interrupt while polling\n")); 612 #endif 613 goto done; 614 } 615 616 ret = ehci_intr1(sc); 617 618 done: 619 mutex_spin_exit(&sc->sc_intr_lock); 620 return ret; 621 } 622 623 Static int 624 ehci_intr1(ehci_softc_t *sc) 625 { 626 u_int32_t intrs, eintrs; 627 628 DPRINTFN(20,("ehci_intr1: enter\n")); 629 630 /* In case the interrupt occurs before initialization has completed. */ 631 if (sc == NULL) { 632 #ifdef DIAGNOSTIC 633 printf("ehci_intr1: sc == NULL\n"); 634 #endif 635 return (0); 636 } 637 638 KASSERT(mutex_owned(&sc->sc_intr_lock)); 639 640 intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 641 if (!intrs) 642 return (0); 643 644 eintrs = intrs & sc->sc_eintrs; 645 DPRINTFN(7, ("ehci_intr1: sc=%p intrs=0x%x(0x%x) eintrs=0x%x\n", 646 sc, (u_int)intrs, EOREAD4(sc, EHCI_USBSTS), 647 (u_int)eintrs)); 648 if (!eintrs) 649 return (0); 650 651 EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ 652 sc->sc_bus.no_intrs++; 653 if (eintrs & EHCI_STS_IAA) { 654 DPRINTF(("ehci_intr1: door bell\n")); 655 kpreempt_disable(); 656 softint_schedule(sc->sc_doorbell_si); 657 kpreempt_enable(); 658 eintrs &= ~EHCI_STS_IAA; 659 } 660 if (eintrs & (EHCI_STS_INT | EHCI_STS_ERRINT)) { 661 DPRINTFN(5,("ehci_intr1: %s %s\n", 662 eintrs & EHCI_STS_INT ? "INT" : "", 663 eintrs & EHCI_STS_ERRINT ? "ERRINT" : "")); 664 usb_schedsoftintr(&sc->sc_bus); 665 eintrs &= ~(EHCI_STS_INT | EHCI_STS_ERRINT); 666 } 667 if (eintrs & EHCI_STS_HSE) { 668 printf("%s: unrecoverable error, controller halted\n", 669 device_xname(sc->sc_dev)); 670 /* XXX what else */ 671 } 672 if (eintrs & EHCI_STS_PCD) { 673 kpreempt_disable(); 674 softint_schedule(sc->sc_pcd_si); 675 kpreempt_enable(); 676 eintrs &= ~EHCI_STS_PCD; 677 } 678 679 if (eintrs != 0) { 680 /* Block unprocessed interrupts. */ 681 sc->sc_eintrs &= ~eintrs; 682 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 683 printf("%s: blocking intrs 0x%x\n", 684 device_xname(sc->sc_dev), eintrs); 685 } 686 687 return (1); 688 } 689 690 Static void 691 ehci_doorbell(void *addr) 692 { 693 ehci_softc_t *sc = addr; 694 695 mutex_enter(&sc->sc_lock); 696 cv_broadcast(&sc->sc_doorbell); 697 mutex_exit(&sc->sc_lock); 698 } 699 700 Static void 701 ehci_pcd(void *addr) 702 { 703 ehci_softc_t *sc = addr; 704 usbd_xfer_handle xfer; 705 usbd_pipe_handle pipe; 706 u_char *p; 707 int i, m; 708 709 mutex_enter(&sc->sc_lock); 710 xfer = sc->sc_intrxfer; 711 712 if (xfer == NULL) { 713 /* Just ignore the change. */ 714 goto done; 715 } 716 717 pipe = xfer->pipe; 718 719 p = KERNADDR(&xfer->dmabuf, 0); 720 m = min(sc->sc_noport, xfer->length * 8 - 1); 721 memset(p, 0, xfer->length); 722 for (i = 1; i <= m; i++) { 723 /* Pick out CHANGE bits from the status reg. */ 724 if (EOREAD4(sc, EHCI_PORTSC(i)) & EHCI_PS_CLEAR) 725 p[i/8] |= 1 << (i%8); 726 } 727 DPRINTF(("ehci_pcd: change=0x%02x\n", *p)); 728 xfer->actlen = xfer->length; 729 xfer->status = USBD_NORMAL_COMPLETION; 730 731 usb_transfer_complete(xfer); 732 733 done: 734 mutex_exit(&sc->sc_lock); 735 } 736 737 Static void 738 ehci_softintr(void *v) 739 { 740 struct usbd_bus *bus = v; 741 ehci_softc_t *sc = bus->hci_private; 742 struct ehci_xfer *ex, *nextex; 743 744 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 745 746 DPRINTFN(10,("%s: ehci_softintr\n", device_xname(sc->sc_dev))); 747 748 /* 749 * The only explanation I can think of for why EHCI is as brain dead 750 * as UHCI interrupt-wise is that Intel was involved in both. 751 * An interrupt just tells us that something is done, we have no 752 * clue what, so we need to scan through all active transfers. :-( 753 */ 754 for (ex = TAILQ_FIRST(&sc->sc_intrhead); ex; ex = nextex) { 755 nextex = TAILQ_NEXT(ex, inext); 756 ehci_check_intr(sc, ex); 757 } 758 759 /* Schedule a callout to catch any dropped transactions. */ 760 if ((sc->sc_flags & EHCIF_DROPPED_INTR_WORKAROUND) && 761 !TAILQ_EMPTY(&sc->sc_intrhead)) 762 callout_reset(&sc->sc_tmo_intrlist, 763 hz, ehci_intrlist_timeout, sc); 764 765 if (sc->sc_softwake) { 766 sc->sc_softwake = 0; 767 cv_broadcast(&sc->sc_softwake_cv); 768 } 769 } 770 771 /* Check for an interrupt. */ 772 Static void 773 ehci_check_intr(ehci_softc_t *sc, struct ehci_xfer *ex) 774 { 775 int attr; 776 777 DPRINTFN(/*15*/2, ("ehci_check_intr: ex=%p\n", ex)); 778 779 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 780 781 attr = ex->xfer.pipe->endpoint->edesc->bmAttributes; 782 if (UE_GET_XFERTYPE(attr) == UE_ISOCHRONOUS) 783 ehci_check_itd_intr(sc, ex); 784 else 785 ehci_check_qh_intr(sc, ex); 786 787 return; 788 } 789 790 Static void 791 ehci_check_qh_intr(ehci_softc_t *sc, struct ehci_xfer *ex) 792 { 793 ehci_soft_qtd_t *sqtd, *lsqtd; 794 __uint32_t status; 795 796 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 797 798 if (ex->sqtdstart == NULL) { 799 printf("ehci_check_qh_intr: not valid sqtd\n"); 800 return; 801 } 802 803 lsqtd = ex->sqtdend; 804 #ifdef DIAGNOSTIC 805 if (lsqtd == NULL) { 806 printf("ehci_check_qh_intr: lsqtd==0\n"); 807 return; 808 } 809 #endif 810 /* 811 * If the last TD is still active we need to check whether there 812 * is a an error somewhere in the middle, or whether there was a 813 * short packet (SPD and not ACTIVE). 814 */ 815 usb_syncmem(&lsqtd->dma, 816 lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), 817 sizeof(lsqtd->qtd.qtd_status), 818 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 819 status = le32toh(lsqtd->qtd.qtd_status); 820 usb_syncmem(&lsqtd->dma, 821 lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), 822 sizeof(lsqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); 823 if (status & EHCI_QTD_ACTIVE) { 824 DPRINTFN(12, ("ehci_check_intr: active ex=%p\n", ex)); 825 for (sqtd = ex->sqtdstart; sqtd != lsqtd; sqtd=sqtd->nextqtd) { 826 usb_syncmem(&sqtd->dma, 827 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 828 sizeof(sqtd->qtd.qtd_status), 829 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 830 status = le32toh(sqtd->qtd.qtd_status); 831 usb_syncmem(&sqtd->dma, 832 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 833 sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); 834 /* If there's an active QTD the xfer isn't done. */ 835 if (status & EHCI_QTD_ACTIVE) 836 break; 837 /* Any kind of error makes the xfer done. */ 838 if (status & EHCI_QTD_HALTED) 839 goto done; 840 /* We want short packets, and it is short: it's done */ 841 if (EHCI_QTD_GET_BYTES(status) != 0) 842 goto done; 843 } 844 DPRINTFN(12, ("ehci_check_intr: ex=%p std=%p still active\n", 845 ex, ex->sqtdstart)); 846 return; 847 } 848 done: 849 DPRINTFN(12, ("ehci_check_intr: ex=%p done\n", ex)); 850 callout_stop(&ex->xfer.timeout_handle); 851 ehci_idone(ex); 852 } 853 854 Static void 855 ehci_check_itd_intr(ehci_softc_t *sc, struct ehci_xfer *ex) 856 { 857 ehci_soft_itd_t *itd; 858 int i; 859 860 KASSERT(mutex_owned(&sc->sc_lock)); 861 862 if (&ex->xfer != SIMPLEQ_FIRST(&ex->xfer.pipe->queue)) 863 return; 864 865 if (ex->itdstart == NULL) { 866 printf("ehci_check_itd_intr: not valid itd\n"); 867 return; 868 } 869 870 itd = ex->itdend; 871 #ifdef DIAGNOSTIC 872 if (itd == NULL) { 873 printf("ehci_check_itd_intr: itdend == 0\n"); 874 return; 875 } 876 #endif 877 878 /* 879 * check no active transfers in last itd, meaning we're finished 880 */ 881 882 usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_ctl), 883 sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | 884 BUS_DMASYNC_POSTREAD); 885 886 for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { 887 if (le32toh(itd->itd.itd_ctl[i]) & EHCI_ITD_ACTIVE) 888 break; 889 } 890 891 if (i == EHCI_ITD_NUFRAMES) { 892 goto done; /* All 8 descriptors inactive, it's done */ 893 } 894 895 DPRINTFN(12, ("ehci_check_itd_intr: ex %p itd %p still active\n", ex, 896 ex->itdstart)); 897 return; 898 done: 899 DPRINTFN(12, ("ehci_check_itd_intr: ex=%p done\n", ex)); 900 callout_stop(&ex->xfer.timeout_handle); 901 ehci_idone(ex); 902 } 903 904 Static void 905 ehci_idone(struct ehci_xfer *ex) 906 { 907 usbd_xfer_handle xfer = &ex->xfer; 908 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 909 struct ehci_softc *sc = xfer->pipe->device->bus->hci_private; 910 ehci_soft_qtd_t *sqtd, *lsqtd; 911 u_int32_t status = 0, nstatus = 0; 912 int actlen; 913 914 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 915 916 DPRINTFN(/*12*/2, ("ehci_idone: ex=%p\n", ex)); 917 918 #ifdef DIAGNOSTIC 919 { 920 if (ex->isdone) { 921 #ifdef EHCI_DEBUG 922 printf("ehci_idone: ex is done!\n "); 923 ehci_dump_exfer(ex); 924 #else 925 printf("ehci_idone: ex=%p is done!\n", ex); 926 #endif 927 return; 928 } 929 ex->isdone = 1; 930 } 931 #endif 932 if (xfer->status == USBD_CANCELLED || 933 xfer->status == USBD_TIMEOUT) { 934 DPRINTF(("ehci_idone: aborted xfer=%p\n", xfer)); 935 return; 936 } 937 938 #ifdef EHCI_DEBUG 939 DPRINTFN(/*10*/2, ("ehci_idone: xfer=%p, pipe=%p ready\n", xfer, epipe)); 940 if (ehcidebug > 10) 941 ehci_dump_sqtds(ex->sqtdstart); 942 #endif 943 944 /* The transfer is done, compute actual length and status. */ 945 946 if (UE_GET_XFERTYPE(xfer->pipe->endpoint->edesc->bmAttributes) 947 == UE_ISOCHRONOUS) { 948 /* Isoc transfer */ 949 struct ehci_soft_itd *itd; 950 int i, nframes, len, uframes; 951 952 nframes = 0; 953 actlen = 0; 954 955 i = xfer->pipe->endpoint->edesc->bInterval; 956 uframes = min(1 << (i - 1), USB_UFRAMES_PER_FRAME); 957 958 for (itd = ex->itdstart; itd != NULL; itd = itd->xfer_next) { 959 usb_syncmem(&itd->dma,itd->offs + offsetof(ehci_itd_t,itd_ctl), 960 sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | 961 BUS_DMASYNC_POSTREAD); 962 963 for (i = 0; i < EHCI_ITD_NUFRAMES; i += uframes) { 964 /* XXX - driver didn't fill in the frame full 965 * of uframes. This leads to scheduling 966 * inefficiencies, but working around 967 * this doubles complexity of tracking 968 * an xfer. 969 */ 970 if (nframes >= xfer->nframes) 971 break; 972 973 status = le32toh(itd->itd.itd_ctl[i]); 974 len = EHCI_ITD_GET_LEN(status); 975 if (EHCI_ITD_GET_STATUS(status) != 0) 976 len = 0; /*No valid data on error*/ 977 978 xfer->frlengths[nframes++] = len; 979 actlen += len; 980 } 981 982 if (nframes >= xfer->nframes) 983 break; 984 } 985 986 xfer->actlen = actlen; 987 xfer->status = USBD_NORMAL_COMPLETION; 988 goto end; 989 } 990 991 /* Continue processing xfers using queue heads */ 992 993 lsqtd = ex->sqtdend; 994 actlen = 0; 995 for (sqtd = ex->sqtdstart; sqtd != lsqtd->nextqtd; sqtd = sqtd->nextqtd) { 996 usb_syncmem(&sqtd->dma, sqtd->offs, sizeof(sqtd->qtd), 997 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 998 nstatus = le32toh(sqtd->qtd.qtd_status); 999 if (nstatus & EHCI_QTD_ACTIVE) 1000 break; 1001 1002 status = nstatus; 1003 if (EHCI_QTD_GET_PID(status) != EHCI_QTD_PID_SETUP) 1004 actlen += sqtd->len - EHCI_QTD_GET_BYTES(status); 1005 } 1006 1007 1008 /* 1009 * If there are left over TDs we need to update the toggle. 1010 * The default pipe doesn't need it since control transfers 1011 * start the toggle at 0 every time. 1012 * For a short transfer we need to update the toggle for the missing 1013 * packets within the qTD. 1014 */ 1015 if ((sqtd != lsqtd->nextqtd || EHCI_QTD_GET_BYTES(status)) && 1016 xfer->pipe->device->default_pipe != xfer->pipe) { 1017 DPRINTFN(2, ("ehci_idone: need toggle update " 1018 "status=%08x nstatus=%08x\n", status, nstatus)); 1019 #if 0 1020 ehci_dump_sqh(epipe->sqh); 1021 ehci_dump_sqtds(ex->sqtdstart); 1022 #endif 1023 epipe->nexttoggle = EHCI_QTD_GET_TOGGLE(nstatus); 1024 } 1025 1026 DPRINTFN(/*10*/2, ("ehci_idone: len=%d, actlen=%d, status=0x%x\n", 1027 xfer->length, actlen, status)); 1028 xfer->actlen = actlen; 1029 if (status & EHCI_QTD_HALTED) { 1030 #ifdef EHCI_DEBUG 1031 char sbuf[128]; 1032 1033 snprintb(sbuf, sizeof(sbuf), 1034 "\20\7HALTED\6BUFERR\5BABBLE\4XACTERR\3MISSED\1PINGSTATE", 1035 (u_int32_t)status); 1036 1037 DPRINTFN(2, ("ehci_idone: error, addr=%d, endpt=0x%02x, " 1038 "status 0x%s\n", 1039 xfer->pipe->device->address, 1040 xfer->pipe->endpoint->edesc->bEndpointAddress, 1041 sbuf)); 1042 if (ehcidebug > 2) { 1043 ehci_dump_sqh(epipe->sqh); 1044 ehci_dump_sqtds(ex->sqtdstart); 1045 } 1046 #endif 1047 /* low&full speed has an extra error flag */ 1048 if (EHCI_QH_GET_EPS(epipe->sqh->qh.qh_endp) != 1049 EHCI_QH_SPEED_HIGH) 1050 status &= EHCI_QTD_STATERRS | EHCI_QTD_PINGSTATE; 1051 else 1052 status &= EHCI_QTD_STATERRS; 1053 if (status == 0) /* no other errors means a stall */ { 1054 xfer->status = USBD_STALLED; 1055 } else { 1056 xfer->status = USBD_IOERROR; /* more info XXX */ 1057 } 1058 /* XXX need to reset TT on missed microframe */ 1059 if (status & EHCI_QTD_MISSEDMICRO) { 1060 printf("%s: missed microframe, TT reset not " 1061 "implemented, hub might be inoperational\n", 1062 device_xname(sc->sc_dev)); 1063 } 1064 } else { 1065 xfer->status = USBD_NORMAL_COMPLETION; 1066 } 1067 1068 end: 1069 /* XXX transfer_complete memcpys out transfer data (for in endpoints) 1070 * during this call, before methods->done is called: dma sync required 1071 * beforehand? */ 1072 usb_transfer_complete(xfer); 1073 DPRINTFN(/*12*/2, ("ehci_idone: ex=%p done\n", ex)); 1074 } 1075 1076 /* 1077 * Wait here until controller claims to have an interrupt. 1078 * Then call ehci_intr and return. Use timeout to avoid waiting 1079 * too long. 1080 */ 1081 Static void 1082 ehci_waitintr(ehci_softc_t *sc, usbd_xfer_handle xfer) 1083 { 1084 int timo; 1085 u_int32_t intrs; 1086 1087 xfer->status = USBD_IN_PROGRESS; 1088 for (timo = xfer->timeout; timo >= 0; timo--) { 1089 usb_delay_ms(&sc->sc_bus, 1); 1090 if (sc->sc_dying) 1091 break; 1092 intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)) & 1093 sc->sc_eintrs; 1094 DPRINTFN(15,("ehci_waitintr: 0x%04x\n", intrs)); 1095 #ifdef EHCI_DEBUG 1096 if (ehcidebug > 15) 1097 ehci_dump_regs(sc); 1098 #endif 1099 if (intrs) { 1100 mutex_spin_enter(&sc->sc_intr_lock); 1101 ehci_intr1(sc); 1102 mutex_spin_exit(&sc->sc_intr_lock); 1103 if (xfer->status != USBD_IN_PROGRESS) 1104 return; 1105 } 1106 } 1107 1108 /* Timeout */ 1109 DPRINTF(("ehci_waitintr: timeout\n")); 1110 xfer->status = USBD_TIMEOUT; 1111 mutex_enter(&sc->sc_lock); 1112 usb_transfer_complete(xfer); 1113 mutex_exit(&sc->sc_lock); 1114 /* XXX should free TD */ 1115 } 1116 1117 Static void 1118 ehci_poll(struct usbd_bus *bus) 1119 { 1120 ehci_softc_t *sc = bus->hci_private; 1121 #ifdef EHCI_DEBUG 1122 static int last; 1123 int new; 1124 new = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 1125 if (new != last) { 1126 DPRINTFN(10,("ehci_poll: intrs=0x%04x\n", new)); 1127 last = new; 1128 } 1129 #endif 1130 1131 if (EOREAD4(sc, EHCI_USBSTS) & sc->sc_eintrs) { 1132 mutex_spin_enter(&sc->sc_intr_lock); 1133 ehci_intr1(sc); 1134 mutex_spin_exit(&sc->sc_intr_lock); 1135 } 1136 } 1137 1138 void 1139 ehci_childdet(device_t self, device_t child) 1140 { 1141 struct ehci_softc *sc = device_private(self); 1142 1143 KASSERT(sc->sc_child == child); 1144 sc->sc_child = NULL; 1145 } 1146 1147 int 1148 ehci_detach(struct ehci_softc *sc, int flags) 1149 { 1150 int rv = 0; 1151 1152 if (sc->sc_child != NULL) 1153 rv = config_detach(sc->sc_child, flags); 1154 1155 if (rv != 0) 1156 return (rv); 1157 1158 callout_halt(&sc->sc_tmo_intrlist, NULL); 1159 callout_destroy(&sc->sc_tmo_intrlist); 1160 1161 /* XXX free other data structures XXX */ 1162 if (sc->sc_softitds) 1163 kmem_free(sc->sc_softitds, 1164 sc->sc_flsize * sizeof(ehci_soft_itd_t *)); 1165 cv_destroy(&sc->sc_doorbell); 1166 cv_destroy(&sc->sc_softwake_cv); 1167 1168 #if 0 1169 /* XXX destroyed in ehci_pci.c as it controls ehci_intr access */ 1170 1171 softint_disestablish(sc->sc_doorbell_si); 1172 softint_disestablish(sc->sc_pcd_si); 1173 1174 mutex_destroy(&sc->sc_lock); 1175 mutex_destroy(&sc->sc_intr_lock); 1176 #endif 1177 1178 pool_cache_destroy(sc->sc_xferpool); 1179 1180 EOWRITE4(sc, EHCI_CONFIGFLAG, 0); 1181 1182 return (rv); 1183 } 1184 1185 1186 int 1187 ehci_activate(device_t self, enum devact act) 1188 { 1189 struct ehci_softc *sc = device_private(self); 1190 1191 switch (act) { 1192 case DVACT_DEACTIVATE: 1193 sc->sc_dying = 1; 1194 return 0; 1195 default: 1196 return EOPNOTSUPP; 1197 } 1198 } 1199 1200 /* 1201 * Handle suspend/resume. 1202 * 1203 * We need to switch to polling mode here, because this routine is 1204 * called from an interrupt context. This is all right since we 1205 * are almost suspended anyway. 1206 * 1207 * Note that this power handler isn't to be registered directly; the 1208 * bus glue needs to call out to it. 1209 */ 1210 bool 1211 ehci_suspend(device_t dv, const pmf_qual_t *qual) 1212 { 1213 ehci_softc_t *sc = device_private(dv); 1214 int i; 1215 uint32_t cmd, hcr; 1216 1217 mutex_spin_enter(&sc->sc_intr_lock); 1218 sc->sc_bus.use_polling++; 1219 mutex_spin_exit(&sc->sc_intr_lock); 1220 1221 for (i = 1; i <= sc->sc_noport; i++) { 1222 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1223 if ((cmd & EHCI_PS_PO) == 0 && (cmd & EHCI_PS_PE) == EHCI_PS_PE) 1224 EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_SUSP); 1225 } 1226 1227 sc->sc_cmd = EOREAD4(sc, EHCI_USBCMD); 1228 1229 cmd = sc->sc_cmd & ~(EHCI_CMD_ASE | EHCI_CMD_PSE); 1230 EOWRITE4(sc, EHCI_USBCMD, cmd); 1231 1232 for (i = 0; i < 100; i++) { 1233 hcr = EOREAD4(sc, EHCI_USBSTS) & (EHCI_STS_ASS | EHCI_STS_PSS); 1234 if (hcr == 0) 1235 break; 1236 1237 usb_delay_ms(&sc->sc_bus, 1); 1238 } 1239 if (hcr != 0) 1240 printf("%s: reset timeout\n", device_xname(dv)); 1241 1242 cmd &= ~EHCI_CMD_RS; 1243 EOWRITE4(sc, EHCI_USBCMD, cmd); 1244 1245 for (i = 0; i < 100; i++) { 1246 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 1247 if (hcr == EHCI_STS_HCH) 1248 break; 1249 1250 usb_delay_ms(&sc->sc_bus, 1); 1251 } 1252 if (hcr != EHCI_STS_HCH) 1253 printf("%s: config timeout\n", device_xname(dv)); 1254 1255 mutex_spin_enter(&sc->sc_intr_lock); 1256 sc->sc_bus.use_polling--; 1257 mutex_spin_exit(&sc->sc_intr_lock); 1258 1259 return true; 1260 } 1261 1262 bool 1263 ehci_resume(device_t dv, const pmf_qual_t *qual) 1264 { 1265 ehci_softc_t *sc = device_private(dv); 1266 int i; 1267 uint32_t cmd, hcr; 1268 1269 /* restore things in case the bios sucks */ 1270 EOWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); 1271 EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); 1272 EOWRITE4(sc, EHCI_ASYNCLISTADDR, 1273 sc->sc_async_head->physaddr | EHCI_LINK_QH); 1274 1275 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs & ~EHCI_INTR_PCIE); 1276 1277 EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); 1278 1279 hcr = 0; 1280 for (i = 1; i <= sc->sc_noport; i++) { 1281 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1282 if ((cmd & EHCI_PS_PO) == 0 && 1283 (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) { 1284 EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_FPR); 1285 hcr = 1; 1286 } 1287 } 1288 1289 if (hcr) { 1290 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT); 1291 1292 for (i = 1; i <= sc->sc_noport; i++) { 1293 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1294 if ((cmd & EHCI_PS_PO) == 0 && 1295 (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) 1296 EOWRITE4(sc, EHCI_PORTSC(i), 1297 cmd & ~EHCI_PS_FPR); 1298 } 1299 } 1300 1301 EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); 1302 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 1303 1304 for (i = 0; i < 100; i++) { 1305 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 1306 if (hcr != EHCI_STS_HCH) 1307 break; 1308 1309 usb_delay_ms(&sc->sc_bus, 1); 1310 } 1311 if (hcr == EHCI_STS_HCH) 1312 printf("%s: config timeout\n", device_xname(dv)); 1313 1314 return true; 1315 } 1316 1317 /* 1318 * Shut down the controller when the system is going down. 1319 */ 1320 bool 1321 ehci_shutdown(device_t self, int flags) 1322 { 1323 ehci_softc_t *sc = device_private(self); 1324 1325 DPRINTF(("ehci_shutdown: stopping the HC\n")); 1326 EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ 1327 EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); 1328 return true; 1329 } 1330 1331 Static usbd_status 1332 ehci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size) 1333 { 1334 struct ehci_softc *sc = bus->hci_private; 1335 usbd_status err; 1336 1337 err = usb_allocmem_flags(&sc->sc_bus, size, 0, dma, USBMALLOC_MULTISEG); 1338 #ifdef EHCI_DEBUG 1339 if (err) 1340 printf("ehci_allocm: usb_allocmem_flags()= %s (%d)\n", 1341 usbd_errstr(err), err); 1342 #endif 1343 if (err == USBD_NOMEM) 1344 err = usb_reserve_allocm(&sc->sc_dma_reserve, dma, size); 1345 #ifdef EHCI_DEBUG 1346 if (err) 1347 printf("ehci_allocm: usb_reserve_allocm()= %s (%d)\n", 1348 usbd_errstr(err), err); 1349 #endif 1350 return (err); 1351 } 1352 1353 Static void 1354 ehci_freem(struct usbd_bus *bus, usb_dma_t *dma) 1355 { 1356 struct ehci_softc *sc = bus->hci_private; 1357 1358 if (dma->block->flags & USB_DMA_RESERVE) { 1359 usb_reserve_freem(&sc->sc_dma_reserve, 1360 dma); 1361 return; 1362 } 1363 usb_freemem(&sc->sc_bus, dma); 1364 } 1365 1366 Static usbd_xfer_handle 1367 ehci_allocx(struct usbd_bus *bus) 1368 { 1369 struct ehci_softc *sc = bus->hci_private; 1370 usbd_xfer_handle xfer; 1371 1372 xfer = pool_cache_get(sc->sc_xferpool, PR_NOWAIT); 1373 if (xfer != NULL) { 1374 memset(xfer, 0, sizeof(struct ehci_xfer)); 1375 #ifdef DIAGNOSTIC 1376 EXFER(xfer)->isdone = 1; 1377 xfer->busy_free = XFER_BUSY; 1378 #endif 1379 } 1380 return (xfer); 1381 } 1382 1383 Static void 1384 ehci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer) 1385 { 1386 struct ehci_softc *sc = bus->hci_private; 1387 1388 #ifdef DIAGNOSTIC 1389 if (xfer->busy_free != XFER_BUSY) { 1390 printf("ehci_freex: xfer=%p not busy, 0x%08x\n", xfer, 1391 xfer->busy_free); 1392 } 1393 xfer->busy_free = XFER_FREE; 1394 if (!EXFER(xfer)->isdone) { 1395 printf("ehci_freex: !isdone\n"); 1396 } 1397 #endif 1398 pool_cache_put(sc->sc_xferpool, xfer); 1399 } 1400 1401 Static void 1402 ehci_get_lock(struct usbd_bus *bus, kmutex_t **lock) 1403 { 1404 struct ehci_softc *sc = bus->hci_private; 1405 1406 *lock = &sc->sc_lock; 1407 } 1408 1409 Static void 1410 ehci_device_clear_toggle(usbd_pipe_handle pipe) 1411 { 1412 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 1413 1414 DPRINTF(("ehci_device_clear_toggle: epipe=%p status=0x%x\n", 1415 epipe, epipe->sqh->qh.qh_qtd.qtd_status)); 1416 #ifdef EHCI_DEBUG 1417 if (ehcidebug) 1418 usbd_dump_pipe(pipe); 1419 #endif 1420 epipe->nexttoggle = 0; 1421 } 1422 1423 Static void 1424 ehci_noop(usbd_pipe_handle pipe) 1425 { 1426 } 1427 1428 #ifdef EHCI_DEBUG 1429 Static void 1430 ehci_dump_regs(ehci_softc_t *sc) 1431 { 1432 int i; 1433 printf("cmd=0x%08x, sts=0x%08x, ien=0x%08x\n", 1434 EOREAD4(sc, EHCI_USBCMD), 1435 EOREAD4(sc, EHCI_USBSTS), 1436 EOREAD4(sc, EHCI_USBINTR)); 1437 printf("frindex=0x%08x ctrdsegm=0x%08x periodic=0x%08x async=0x%08x\n", 1438 EOREAD4(sc, EHCI_FRINDEX), 1439 EOREAD4(sc, EHCI_CTRLDSSEGMENT), 1440 EOREAD4(sc, EHCI_PERIODICLISTBASE), 1441 EOREAD4(sc, EHCI_ASYNCLISTADDR)); 1442 for (i = 1; i <= sc->sc_noport; i++) 1443 printf("port %d status=0x%08x\n", i, 1444 EOREAD4(sc, EHCI_PORTSC(i))); 1445 } 1446 1447 /* 1448 * Unused function - this is meant to be called from a kernel 1449 * debugger. 1450 */ 1451 void 1452 ehci_dump(void) 1453 { 1454 ehci_dump_regs(theehci); 1455 } 1456 1457 Static void 1458 ehci_dump_link(ehci_link_t link, int type) 1459 { 1460 link = le32toh(link); 1461 printf("0x%08x", link); 1462 if (link & EHCI_LINK_TERMINATE) 1463 printf("<T>"); 1464 else { 1465 printf("<"); 1466 if (type) { 1467 switch (EHCI_LINK_TYPE(link)) { 1468 case EHCI_LINK_ITD: printf("ITD"); break; 1469 case EHCI_LINK_QH: printf("QH"); break; 1470 case EHCI_LINK_SITD: printf("SITD"); break; 1471 case EHCI_LINK_FSTN: printf("FSTN"); break; 1472 } 1473 } 1474 printf(">"); 1475 } 1476 } 1477 1478 Static void 1479 ehci_dump_sqtds(ehci_soft_qtd_t *sqtd) 1480 { 1481 int i; 1482 u_int32_t stop; 1483 1484 stop = 0; 1485 for (i = 0; sqtd && i < 20 && !stop; sqtd = sqtd->nextqtd, i++) { 1486 ehci_dump_sqtd(sqtd); 1487 usb_syncmem(&sqtd->dma, 1488 sqtd->offs + offsetof(ehci_qtd_t, qtd_next), 1489 sizeof(sqtd->qtd), 1490 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1491 stop = sqtd->qtd.qtd_next & htole32(EHCI_LINK_TERMINATE); 1492 usb_syncmem(&sqtd->dma, 1493 sqtd->offs + offsetof(ehci_qtd_t, qtd_next), 1494 sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); 1495 } 1496 if (sqtd) 1497 printf("dump aborted, too many TDs\n"); 1498 } 1499 1500 Static void 1501 ehci_dump_sqtd(ehci_soft_qtd_t *sqtd) 1502 { 1503 usb_syncmem(&sqtd->dma, sqtd->offs, 1504 sizeof(sqtd->qtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1505 printf("QTD(%p) at 0x%08x:\n", sqtd, sqtd->physaddr); 1506 ehci_dump_qtd(&sqtd->qtd); 1507 usb_syncmem(&sqtd->dma, sqtd->offs, 1508 sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); 1509 } 1510 1511 Static void 1512 ehci_dump_qtd(ehci_qtd_t *qtd) 1513 { 1514 u_int32_t s; 1515 char sbuf[128]; 1516 1517 printf(" next="); ehci_dump_link(qtd->qtd_next, 0); 1518 printf(" altnext="); ehci_dump_link(qtd->qtd_altnext, 0); 1519 printf("\n"); 1520 s = le32toh(qtd->qtd_status); 1521 snprintb(sbuf, sizeof(sbuf), 1522 "\20\10ACTIVE\7HALTED\6BUFERR\5BABBLE\4XACTERR" 1523 "\3MISSED\2SPLIT\1PING", EHCI_QTD_GET_STATUS(s)); 1524 printf(" status=0x%08x: toggle=%d bytes=0x%x ioc=%d c_page=0x%x\n", 1525 s, EHCI_QTD_GET_TOGGLE(s), EHCI_QTD_GET_BYTES(s), 1526 EHCI_QTD_GET_IOC(s), EHCI_QTD_GET_C_PAGE(s)); 1527 printf(" cerr=%d pid=%d stat=0x%s\n", EHCI_QTD_GET_CERR(s), 1528 EHCI_QTD_GET_PID(s), sbuf); 1529 for (s = 0; s < 5; s++) 1530 printf(" buffer[%d]=0x%08x\n", s, le32toh(qtd->qtd_buffer[s])); 1531 } 1532 1533 Static void 1534 ehci_dump_sqh(ehci_soft_qh_t *sqh) 1535 { 1536 ehci_qh_t *qh = &sqh->qh; 1537 u_int32_t endp, endphub; 1538 1539 usb_syncmem(&sqh->dma, sqh->offs, 1540 sizeof(sqh->qh), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1541 printf("QH(%p) at 0x%08x:\n", sqh, sqh->physaddr); 1542 printf(" link="); ehci_dump_link(qh->qh_link, 1); printf("\n"); 1543 endp = le32toh(qh->qh_endp); 1544 printf(" endp=0x%08x\n", endp); 1545 printf(" addr=0x%02x inact=%d endpt=%d eps=%d dtc=%d hrecl=%d\n", 1546 EHCI_QH_GET_ADDR(endp), EHCI_QH_GET_INACT(endp), 1547 EHCI_QH_GET_ENDPT(endp), EHCI_QH_GET_EPS(endp), 1548 EHCI_QH_GET_DTC(endp), EHCI_QH_GET_HRECL(endp)); 1549 printf(" mpl=0x%x ctl=%d nrl=%d\n", 1550 EHCI_QH_GET_MPL(endp), EHCI_QH_GET_CTL(endp), 1551 EHCI_QH_GET_NRL(endp)); 1552 endphub = le32toh(qh->qh_endphub); 1553 printf(" endphub=0x%08x\n", endphub); 1554 printf(" smask=0x%02x cmask=0x%02x huba=0x%02x port=%d mult=%d\n", 1555 EHCI_QH_GET_SMASK(endphub), EHCI_QH_GET_CMASK(endphub), 1556 EHCI_QH_GET_HUBA(endphub), EHCI_QH_GET_PORT(endphub), 1557 EHCI_QH_GET_MULT(endphub)); 1558 printf(" curqtd="); ehci_dump_link(qh->qh_curqtd, 0); printf("\n"); 1559 printf("Overlay qTD:\n"); 1560 ehci_dump_qtd(&qh->qh_qtd); 1561 usb_syncmem(&sqh->dma, sqh->offs, 1562 sizeof(sqh->qh), BUS_DMASYNC_PREREAD); 1563 } 1564 1565 #if notyet 1566 Static void 1567 ehci_dump_itd(struct ehci_soft_itd *itd) 1568 { 1569 ehci_isoc_trans_t t; 1570 ehci_isoc_bufr_ptr_t b, b2, b3; 1571 int i; 1572 1573 printf("ITD: next phys=%X\n", itd->itd.itd_next); 1574 1575 for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { 1576 t = le32toh(itd->itd.itd_ctl[i]); 1577 printf("ITDctl %d: stat=%X len=%X ioc=%X pg=%X offs=%X\n", i, 1578 EHCI_ITD_GET_STATUS(t), EHCI_ITD_GET_LEN(t), 1579 EHCI_ITD_GET_IOC(t), EHCI_ITD_GET_PG(t), 1580 EHCI_ITD_GET_OFFS(t)); 1581 } 1582 printf("ITDbufr: "); 1583 for (i = 0; i < EHCI_ITD_NBUFFERS; i++) 1584 printf("%X,", EHCI_ITD_GET_BPTR(le32toh(itd->itd.itd_bufr[i]))); 1585 1586 b = le32toh(itd->itd.itd_bufr[0]); 1587 b2 = le32toh(itd->itd.itd_bufr[1]); 1588 b3 = le32toh(itd->itd.itd_bufr[2]); 1589 printf("\nep=%X daddr=%X dir=%d maxpkt=%X multi=%X\n", 1590 EHCI_ITD_GET_EP(b), EHCI_ITD_GET_DADDR(b), EHCI_ITD_GET_DIR(b2), 1591 EHCI_ITD_GET_MAXPKT(b2), EHCI_ITD_GET_MULTI(b3)); 1592 } 1593 1594 Static void 1595 ehci_dump_sitd(struct ehci_soft_itd *itd) 1596 { 1597 printf("SITD %p next=%p prev=%p xfernext=%p physaddr=%X slot=%d\n", 1598 itd, itd->u.frame_list.next, itd->u.frame_list.prev, 1599 itd->xfer_next, itd->physaddr, itd->slot); 1600 } 1601 #endif 1602 1603 #ifdef DIAGNOSTIC 1604 Static void 1605 ehci_dump_exfer(struct ehci_xfer *ex) 1606 { 1607 printf("ehci_dump_exfer: ex=%p sqtdstart=%p end=%p itdstart=%p end=%p isdone=%d\n", ex, ex->sqtdstart, ex->sqtdend, ex->itdstart, ex->itdend, ex->isdone); 1608 } 1609 #endif 1610 #endif 1611 1612 Static usbd_status 1613 ehci_open(usbd_pipe_handle pipe) 1614 { 1615 usbd_device_handle dev = pipe->device; 1616 ehci_softc_t *sc = dev->bus->hci_private; 1617 usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc; 1618 u_int8_t addr = dev->address; 1619 u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE; 1620 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 1621 ehci_soft_qh_t *sqh; 1622 usbd_status err; 1623 int ival, speed, naks; 1624 int hshubaddr, hshubport; 1625 1626 DPRINTFN(1, ("ehci_open: pipe=%p, addr=%d, endpt=%d (%d)\n", 1627 pipe, addr, ed->bEndpointAddress, sc->sc_addr)); 1628 1629 if (dev->myhsport) { 1630 /* 1631 * When directly attached FS/LS device while doing embedded 1632 * transaction translations and we are the hub, set the hub 1633 * address to 0 (us). 1634 */ 1635 if (!(sc->sc_flags & EHCIF_ETTF) 1636 || (dev->myhsport->parent->address != sc->sc_addr)) { 1637 hshubaddr = dev->myhsport->parent->address; 1638 } else { 1639 hshubaddr = 0; 1640 } 1641 hshubport = dev->myhsport->portno; 1642 } else { 1643 hshubaddr = 0; 1644 hshubport = 0; 1645 } 1646 1647 if (sc->sc_dying) 1648 return (USBD_IOERROR); 1649 1650 /* toggle state needed for bulk endpoints */ 1651 epipe->nexttoggle = pipe->endpoint->datatoggle; 1652 1653 if (addr == sc->sc_addr) { 1654 switch (ed->bEndpointAddress) { 1655 case USB_CONTROL_ENDPOINT: 1656 pipe->methods = &ehci_root_ctrl_methods; 1657 break; 1658 case UE_DIR_IN | EHCI_INTR_ENDPT: 1659 pipe->methods = &ehci_root_intr_methods; 1660 break; 1661 default: 1662 DPRINTF(("ehci_open: bad bEndpointAddress 0x%02x\n", 1663 ed->bEndpointAddress)); 1664 return (USBD_INVAL); 1665 } 1666 return (USBD_NORMAL_COMPLETION); 1667 } 1668 1669 /* XXX All this stuff is only valid for async. */ 1670 switch (dev->speed) { 1671 case USB_SPEED_LOW: speed = EHCI_QH_SPEED_LOW; break; 1672 case USB_SPEED_FULL: speed = EHCI_QH_SPEED_FULL; break; 1673 case USB_SPEED_HIGH: speed = EHCI_QH_SPEED_HIGH; break; 1674 default: panic("ehci_open: bad device speed %d", dev->speed); 1675 } 1676 if (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_ISOCHRONOUS) { 1677 aprint_error_dev(sc->sc_dev, "error opening low/full speed " 1678 "isoc endpoint.\n"); 1679 aprint_normal_dev(sc->sc_dev, "a low/full speed device is " 1680 "attached to a USB2 hub, and transaction translations are " 1681 "not yet supported.\n"); 1682 aprint_normal_dev(sc->sc_dev, "reattach the device to the " 1683 "root hub instead.\n"); 1684 DPRINTFN(1,("ehci_open: hshubaddr=%d hshubport=%d\n", 1685 hshubaddr, hshubport)); 1686 return USBD_INVAL; 1687 } 1688 1689 /* 1690 * For interrupt transfer, nak throttling must be disabled, but for 1691 * the other transfer type, nak throttling should be enabled from the 1692 * viewpoint that avoids the memory thrashing. 1693 */ 1694 naks = (xfertype == UE_INTERRUPT) ? 0 1695 : ((speed == EHCI_QH_SPEED_HIGH) ? 4 : 0); 1696 1697 /* Allocate sqh for everything, save isoc xfers */ 1698 if (xfertype != UE_ISOCHRONOUS) { 1699 sqh = ehci_alloc_sqh(sc); 1700 if (sqh == NULL) 1701 return (USBD_NOMEM); 1702 /* qh_link filled when the QH is added */ 1703 sqh->qh.qh_endp = htole32( 1704 EHCI_QH_SET_ADDR(addr) | 1705 EHCI_QH_SET_ENDPT(UE_GET_ADDR(ed->bEndpointAddress)) | 1706 EHCI_QH_SET_EPS(speed) | 1707 EHCI_QH_DTC | 1708 EHCI_QH_SET_MPL(UGETW(ed->wMaxPacketSize)) | 1709 (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_CONTROL ? 1710 EHCI_QH_CTL : 0) | 1711 EHCI_QH_SET_NRL(naks) 1712 ); 1713 sqh->qh.qh_endphub = htole32( 1714 EHCI_QH_SET_MULT(1) | 1715 EHCI_QH_SET_SMASK(xfertype == UE_INTERRUPT ? 0x02 : 0) 1716 ); 1717 if (speed != EHCI_QH_SPEED_HIGH) 1718 sqh->qh.qh_endphub |= htole32( 1719 EHCI_QH_SET_PORT(hshubport) | 1720 EHCI_QH_SET_HUBA(hshubaddr) | 1721 EHCI_QH_SET_CMASK(0x08) /* XXX */ 1722 ); 1723 sqh->qh.qh_curqtd = EHCI_NULL; 1724 /* Fill the overlay qTD */ 1725 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 1726 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 1727 sqh->qh.qh_qtd.qtd_status = htole32(0); 1728 1729 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1730 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1731 epipe->sqh = sqh; 1732 } else { 1733 sqh = NULL; 1734 } /*xfertype == UE_ISOC*/ 1735 1736 switch (xfertype) { 1737 case UE_CONTROL: 1738 err = usb_allocmem(&sc->sc_bus, sizeof(usb_device_request_t), 1739 0, &epipe->u.ctl.reqdma); 1740 #ifdef EHCI_DEBUG 1741 if (err) 1742 printf("ehci_open: usb_allocmem()=%d\n", err); 1743 #endif 1744 if (err) 1745 goto bad; 1746 pipe->methods = &ehci_device_ctrl_methods; 1747 mutex_enter(&sc->sc_lock); 1748 ehci_add_qh(sc, sqh, sc->sc_async_head); 1749 mutex_exit(&sc->sc_lock); 1750 break; 1751 case UE_BULK: 1752 pipe->methods = &ehci_device_bulk_methods; 1753 mutex_enter(&sc->sc_lock); 1754 ehci_add_qh(sc, sqh, sc->sc_async_head); 1755 mutex_exit(&sc->sc_lock); 1756 break; 1757 case UE_INTERRUPT: 1758 pipe->methods = &ehci_device_intr_methods; 1759 ival = pipe->interval; 1760 if (ival == USBD_DEFAULT_INTERVAL) { 1761 if (speed == EHCI_QH_SPEED_HIGH) { 1762 if (ed->bInterval > 16) { 1763 /* 1764 * illegal with high-speed, but there 1765 * were documentation bugs in the spec, 1766 * so be generous 1767 */ 1768 ival = 256; 1769 } else 1770 ival = (1 << (ed->bInterval - 1)) / 8; 1771 } else 1772 ival = ed->bInterval; 1773 } 1774 err = ehci_device_setintr(sc, sqh, ival); 1775 if (err) 1776 goto bad; 1777 break; 1778 case UE_ISOCHRONOUS: 1779 pipe->methods = &ehci_device_isoc_methods; 1780 if (ed->bInterval == 0 || ed->bInterval > 16) { 1781 printf("ehci: opening pipe with invalid bInterval\n"); 1782 err = USBD_INVAL; 1783 goto bad; 1784 } 1785 if (UGETW(ed->wMaxPacketSize) == 0) { 1786 printf("ehci: zero length endpoint open request\n"); 1787 err = USBD_INVAL; 1788 goto bad; 1789 } 1790 epipe->u.isoc.next_frame = 0; 1791 epipe->u.isoc.cur_xfers = 0; 1792 break; 1793 default: 1794 DPRINTF(("ehci: bad xfer type %d\n", xfertype)); 1795 err = USBD_INVAL; 1796 goto bad; 1797 } 1798 return (USBD_NORMAL_COMPLETION); 1799 1800 bad: 1801 if (sqh != NULL) 1802 ehci_free_sqh(sc, sqh); 1803 return (err); 1804 } 1805 1806 /* 1807 * Add an ED to the schedule. Called with USB lock held. 1808 */ 1809 Static void 1810 ehci_add_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) 1811 { 1812 1813 KASSERT(mutex_owned(&sc->sc_lock)); 1814 1815 usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), 1816 sizeof(head->qh.qh_link), BUS_DMASYNC_POSTWRITE); 1817 sqh->next = head->next; 1818 sqh->qh.qh_link = head->qh.qh_link; 1819 usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), 1820 sizeof(sqh->qh.qh_link), BUS_DMASYNC_PREWRITE); 1821 head->next = sqh; 1822 head->qh.qh_link = htole32(sqh->physaddr | EHCI_LINK_QH); 1823 usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), 1824 sizeof(head->qh.qh_link), BUS_DMASYNC_PREWRITE); 1825 1826 #ifdef EHCI_DEBUG 1827 if (ehcidebug > 5) { 1828 printf("ehci_add_qh:\n"); 1829 ehci_dump_sqh(sqh); 1830 } 1831 #endif 1832 } 1833 1834 /* 1835 * Remove an ED from the schedule. Called with USB lock held. 1836 */ 1837 Static void 1838 ehci_rem_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) 1839 { 1840 ehci_soft_qh_t *p; 1841 1842 KASSERT(mutex_owned(&sc->sc_lock)); 1843 1844 /* XXX */ 1845 for (p = head; p != NULL && p->next != sqh; p = p->next) 1846 ; 1847 if (p == NULL) 1848 panic("ehci_rem_qh: ED not found"); 1849 usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), 1850 sizeof(sqh->qh.qh_link), BUS_DMASYNC_POSTWRITE); 1851 p->next = sqh->next; 1852 p->qh.qh_link = sqh->qh.qh_link; 1853 usb_syncmem(&p->dma, p->offs + offsetof(ehci_qh_t, qh_link), 1854 sizeof(p->qh.qh_link), BUS_DMASYNC_PREWRITE); 1855 1856 ehci_sync_hc(sc); 1857 } 1858 1859 Static void 1860 ehci_set_qh_qtd(ehci_soft_qh_t *sqh, ehci_soft_qtd_t *sqtd) 1861 { 1862 int i; 1863 u_int32_t status; 1864 1865 /* Save toggle bit and ping status. */ 1866 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1867 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1868 status = sqh->qh.qh_qtd.qtd_status & 1869 htole32(EHCI_QTD_TOGGLE_MASK | 1870 EHCI_QTD_SET_STATUS(EHCI_QTD_PINGSTATE)); 1871 /* Set HALTED to make hw leave it alone. */ 1872 sqh->qh.qh_qtd.qtd_status = 1873 htole32(EHCI_QTD_SET_STATUS(EHCI_QTD_HALTED)); 1874 usb_syncmem(&sqh->dma, 1875 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 1876 sizeof(sqh->qh.qh_qtd.qtd_status), 1877 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1878 sqh->qh.qh_curqtd = 0; 1879 sqh->qh.qh_qtd.qtd_next = htole32(sqtd->physaddr); 1880 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 1881 for (i = 0; i < EHCI_QTD_NBUFFERS; i++) 1882 sqh->qh.qh_qtd.qtd_buffer[i] = 0; 1883 sqh->sqtd = sqtd; 1884 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1885 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1886 /* Set !HALTED && !ACTIVE to start execution, preserve some fields */ 1887 sqh->qh.qh_qtd.qtd_status = status; 1888 usb_syncmem(&sqh->dma, 1889 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 1890 sizeof(sqh->qh.qh_qtd.qtd_status), 1891 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1892 } 1893 1894 /* 1895 * Ensure that the HC has released all references to the QH. We do this 1896 * by asking for a Async Advance Doorbell interrupt and then we wait for 1897 * the interrupt. 1898 * To make this easier we first obtain exclusive use of the doorbell. 1899 */ 1900 Static void 1901 ehci_sync_hc(ehci_softc_t *sc) 1902 { 1903 int error; 1904 1905 KASSERT(mutex_owned(&sc->sc_lock)); 1906 1907 if (sc->sc_dying) { 1908 DPRINTFN(2,("ehci_sync_hc: dying\n")); 1909 return; 1910 } 1911 DPRINTFN(2,("ehci_sync_hc: enter\n")); 1912 /* ask for doorbell */ 1913 EOWRITE4(sc, EHCI_USBCMD, EOREAD4(sc, EHCI_USBCMD) | EHCI_CMD_IAAD); 1914 DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n", 1915 EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS))); 1916 error = cv_timedwait(&sc->sc_doorbell, &sc->sc_lock, hz); /* bell wait */ 1917 DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n", 1918 EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS))); 1919 #ifdef DIAGNOSTIC 1920 if (error) 1921 printf("ehci_sync_hc: cv_timedwait() = %d\n", error); 1922 #endif 1923 DPRINTFN(2,("ehci_sync_hc: exit\n")); 1924 } 1925 1926 Static void 1927 ehci_rem_free_itd_chain(ehci_softc_t *sc, struct ehci_xfer *exfer) 1928 { 1929 struct ehci_soft_itd *itd, *prev; 1930 1931 prev = NULL; 1932 1933 if (exfer->itdstart == NULL || exfer->itdend == NULL) 1934 panic("ehci isoc xfer being freed, but with no itd chain\n"); 1935 1936 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 1937 prev = itd->u.frame_list.prev; 1938 /* Unlink itd from hardware chain, or frame array */ 1939 if (prev == NULL) { /* We're at the table head */ 1940 sc->sc_softitds[itd->slot] = itd->u.frame_list.next; 1941 sc->sc_flist[itd->slot] = itd->itd.itd_next; 1942 usb_syncmem(&sc->sc_fldma, 1943 sizeof(ehci_link_t) * itd->slot, 1944 sizeof(ehci_link_t), 1945 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1946 1947 if (itd->u.frame_list.next != NULL) 1948 itd->u.frame_list.next->u.frame_list.prev = NULL; 1949 } else { 1950 /* XXX this part is untested... */ 1951 prev->itd.itd_next = itd->itd.itd_next; 1952 usb_syncmem(&itd->dma, 1953 itd->offs + offsetof(ehci_itd_t, itd_next), 1954 sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE); 1955 1956 prev->u.frame_list.next = itd->u.frame_list.next; 1957 if (itd->u.frame_list.next != NULL) 1958 itd->u.frame_list.next->u.frame_list.prev = prev; 1959 } 1960 } 1961 1962 prev = NULL; 1963 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 1964 if (prev != NULL) 1965 ehci_free_itd(sc, prev); 1966 prev = itd; 1967 } 1968 if (prev) 1969 ehci_free_itd(sc, prev); 1970 exfer->itdstart = NULL; 1971 exfer->itdend = NULL; 1972 } 1973 1974 /***********/ 1975 1976 /* 1977 * Data structures and routines to emulate the root hub. 1978 */ 1979 Static usb_device_descriptor_t ehci_devd = { 1980 USB_DEVICE_DESCRIPTOR_SIZE, 1981 UDESC_DEVICE, /* type */ 1982 {0x00, 0x02}, /* USB version */ 1983 UDCLASS_HUB, /* class */ 1984 UDSUBCLASS_HUB, /* subclass */ 1985 UDPROTO_HSHUBSTT, /* protocol */ 1986 64, /* max packet */ 1987 {0},{0},{0x00,0x01}, /* device id */ 1988 1,2,0, /* string indicies */ 1989 1 /* # of configurations */ 1990 }; 1991 1992 Static const usb_device_qualifier_t ehci_odevd = { 1993 USB_DEVICE_DESCRIPTOR_SIZE, 1994 UDESC_DEVICE_QUALIFIER, /* type */ 1995 {0x00, 0x02}, /* USB version */ 1996 UDCLASS_HUB, /* class */ 1997 UDSUBCLASS_HUB, /* subclass */ 1998 UDPROTO_FSHUB, /* protocol */ 1999 64, /* max packet */ 2000 1, /* # of configurations */ 2001 0 2002 }; 2003 2004 Static const usb_config_descriptor_t ehci_confd = { 2005 USB_CONFIG_DESCRIPTOR_SIZE, 2006 UDESC_CONFIG, 2007 {USB_CONFIG_DESCRIPTOR_SIZE + 2008 USB_INTERFACE_DESCRIPTOR_SIZE + 2009 USB_ENDPOINT_DESCRIPTOR_SIZE}, 2010 1, 2011 1, 2012 0, 2013 UC_ATTR_MBO | UC_SELF_POWERED, 2014 0 /* max power */ 2015 }; 2016 2017 Static const usb_interface_descriptor_t ehci_ifcd = { 2018 USB_INTERFACE_DESCRIPTOR_SIZE, 2019 UDESC_INTERFACE, 2020 0, 2021 0, 2022 1, 2023 UICLASS_HUB, 2024 UISUBCLASS_HUB, 2025 UIPROTO_HSHUBSTT, 2026 0 2027 }; 2028 2029 Static const usb_endpoint_descriptor_t ehci_endpd = { 2030 USB_ENDPOINT_DESCRIPTOR_SIZE, 2031 UDESC_ENDPOINT, 2032 UE_DIR_IN | EHCI_INTR_ENDPT, 2033 UE_INTERRUPT, 2034 {8, 0}, /* max packet */ 2035 12 2036 }; 2037 2038 Static const usb_hub_descriptor_t ehci_hubd = { 2039 USB_HUB_DESCRIPTOR_SIZE, 2040 UDESC_HUB, 2041 0, 2042 {0,0}, 2043 0, 2044 0, 2045 {""}, 2046 {""}, 2047 }; 2048 2049 /* 2050 * Simulate a hardware hub by handling all the necessary requests. 2051 */ 2052 Static usbd_status 2053 ehci_root_ctrl_transfer(usbd_xfer_handle xfer) 2054 { 2055 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 2056 usbd_status err; 2057 2058 /* Insert last in queue. */ 2059 mutex_enter(&sc->sc_lock); 2060 err = usb_insert_transfer(xfer); 2061 mutex_exit(&sc->sc_lock); 2062 if (err) 2063 return (err); 2064 2065 /* Pipe isn't running, start first */ 2066 return (ehci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2067 } 2068 2069 Static usbd_status 2070 ehci_root_ctrl_start(usbd_xfer_handle xfer) 2071 { 2072 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 2073 usb_device_request_t *req; 2074 void *buf = NULL; 2075 int port, i; 2076 int len, value, index, l, totlen = 0; 2077 usb_port_status_t ps; 2078 usb_hub_descriptor_t hubd; 2079 usbd_status err; 2080 u_int32_t v; 2081 2082 if (sc->sc_dying) 2083 return (USBD_IOERROR); 2084 2085 #ifdef DIAGNOSTIC 2086 if (!(xfer->rqflags & URQ_REQUEST)) 2087 /* XXX panic */ 2088 return (USBD_INVAL); 2089 #endif 2090 req = &xfer->request; 2091 2092 DPRINTFN(4,("ehci_root_ctrl_start: type=0x%02x request=%02x\n", 2093 req->bmRequestType, req->bRequest)); 2094 2095 len = UGETW(req->wLength); 2096 value = UGETW(req->wValue); 2097 index = UGETW(req->wIndex); 2098 2099 if (len != 0) 2100 buf = KERNADDR(&xfer->dmabuf, 0); 2101 2102 #define C(x,y) ((x) | ((y) << 8)) 2103 switch(C(req->bRequest, req->bmRequestType)) { 2104 case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE): 2105 case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE): 2106 case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT): 2107 /* 2108 * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops 2109 * for the integrated root hub. 2110 */ 2111 break; 2112 case C(UR_GET_CONFIG, UT_READ_DEVICE): 2113 if (len > 0) { 2114 *(u_int8_t *)buf = sc->sc_conf; 2115 totlen = 1; 2116 } 2117 break; 2118 case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): 2119 DPRINTFN(8,("ehci_root_ctrl_start: wValue=0x%04x\n", value)); 2120 if (len == 0) 2121 break; 2122 switch(value >> 8) { 2123 case UDESC_DEVICE: 2124 if ((value & 0xff) != 0) { 2125 err = USBD_IOERROR; 2126 goto ret; 2127 } 2128 totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); 2129 USETW(ehci_devd.idVendor, sc->sc_id_vendor); 2130 memcpy(buf, &ehci_devd, l); 2131 break; 2132 /* 2133 * We can't really operate at another speed, but the spec says 2134 * we need this descriptor. 2135 */ 2136 case UDESC_DEVICE_QUALIFIER: 2137 if ((value & 0xff) != 0) { 2138 err = USBD_IOERROR; 2139 goto ret; 2140 } 2141 totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); 2142 memcpy(buf, &ehci_odevd, l); 2143 break; 2144 /* 2145 * We can't really operate at another speed, but the spec says 2146 * we need this descriptor. 2147 */ 2148 case UDESC_OTHER_SPEED_CONFIGURATION: 2149 case UDESC_CONFIG: 2150 if ((value & 0xff) != 0) { 2151 err = USBD_IOERROR; 2152 goto ret; 2153 } 2154 totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE); 2155 memcpy(buf, &ehci_confd, l); 2156 ((usb_config_descriptor_t *)buf)->bDescriptorType = 2157 value >> 8; 2158 buf = (char *)buf + l; 2159 len -= l; 2160 l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE); 2161 totlen += l; 2162 memcpy(buf, &ehci_ifcd, l); 2163 buf = (char *)buf + l; 2164 len -= l; 2165 l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE); 2166 totlen += l; 2167 memcpy(buf, &ehci_endpd, l); 2168 break; 2169 case UDESC_STRING: 2170 #define sd ((usb_string_descriptor_t *)buf) 2171 switch (value & 0xff) { 2172 case 0: /* Language table */ 2173 totlen = usb_makelangtbl(sd, len); 2174 break; 2175 case 1: /* Vendor */ 2176 totlen = usb_makestrdesc(sd, len, 2177 sc->sc_vendor); 2178 break; 2179 case 2: /* Product */ 2180 totlen = usb_makestrdesc(sd, len, 2181 "EHCI root hub"); 2182 break; 2183 } 2184 #undef sd 2185 break; 2186 default: 2187 err = USBD_IOERROR; 2188 goto ret; 2189 } 2190 break; 2191 case C(UR_GET_INTERFACE, UT_READ_INTERFACE): 2192 if (len > 0) { 2193 *(u_int8_t *)buf = 0; 2194 totlen = 1; 2195 } 2196 break; 2197 case C(UR_GET_STATUS, UT_READ_DEVICE): 2198 if (len > 1) { 2199 USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED); 2200 totlen = 2; 2201 } 2202 break; 2203 case C(UR_GET_STATUS, UT_READ_INTERFACE): 2204 case C(UR_GET_STATUS, UT_READ_ENDPOINT): 2205 if (len > 1) { 2206 USETW(((usb_status_t *)buf)->wStatus, 0); 2207 totlen = 2; 2208 } 2209 break; 2210 case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): 2211 if (value >= USB_MAX_DEVICES) { 2212 err = USBD_IOERROR; 2213 goto ret; 2214 } 2215 sc->sc_addr = value; 2216 break; 2217 case C(UR_SET_CONFIG, UT_WRITE_DEVICE): 2218 if (value != 0 && value != 1) { 2219 err = USBD_IOERROR; 2220 goto ret; 2221 } 2222 sc->sc_conf = value; 2223 break; 2224 case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE): 2225 break; 2226 case C(UR_SET_FEATURE, UT_WRITE_DEVICE): 2227 case C(UR_SET_FEATURE, UT_WRITE_INTERFACE): 2228 case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT): 2229 err = USBD_IOERROR; 2230 goto ret; 2231 case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE): 2232 break; 2233 case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT): 2234 break; 2235 /* Hub requests */ 2236 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE): 2237 break; 2238 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER): 2239 DPRINTFN(4, ("ehci_root_ctrl_start: UR_CLEAR_PORT_FEATURE " 2240 "port=%d feature=%d\n", 2241 index, value)); 2242 if (index < 1 || index > sc->sc_noport) { 2243 err = USBD_IOERROR; 2244 goto ret; 2245 } 2246 port = EHCI_PORTSC(index); 2247 v = EOREAD4(sc, port); 2248 DPRINTFN(4, ("ehci_root_ctrl_start: portsc=0x%08x\n", v)); 2249 v &= ~EHCI_PS_CLEAR; 2250 switch(value) { 2251 case UHF_PORT_ENABLE: 2252 EOWRITE4(sc, port, v &~ EHCI_PS_PE); 2253 break; 2254 case UHF_PORT_SUSPEND: 2255 if (!(v & EHCI_PS_SUSP)) /* not suspended */ 2256 break; 2257 v &= ~EHCI_PS_SUSP; 2258 EOWRITE4(sc, port, v | EHCI_PS_FPR); 2259 /* see USB2 spec ch. 7.1.7.7 */ 2260 usb_delay_ms(&sc->sc_bus, 20); 2261 EOWRITE4(sc, port, v); 2262 usb_delay_ms(&sc->sc_bus, 2); 2263 #ifdef DEBUG 2264 v = EOREAD4(sc, port); 2265 if (v & (EHCI_PS_FPR | EHCI_PS_SUSP)) 2266 printf("ehci: resume failed: %x\n", v); 2267 #endif 2268 break; 2269 case UHF_PORT_POWER: 2270 if (sc->sc_hasppc) 2271 EOWRITE4(sc, port, v &~ EHCI_PS_PP); 2272 break; 2273 case UHF_PORT_TEST: 2274 DPRINTFN(2,("ehci_root_ctrl_start: clear port test " 2275 "%d\n", index)); 2276 break; 2277 case UHF_PORT_INDICATOR: 2278 DPRINTFN(2,("ehci_root_ctrl_start: clear port ind " 2279 "%d\n", index)); 2280 EOWRITE4(sc, port, v &~ EHCI_PS_PIC); 2281 break; 2282 case UHF_C_PORT_CONNECTION: 2283 EOWRITE4(sc, port, v | EHCI_PS_CSC); 2284 break; 2285 case UHF_C_PORT_ENABLE: 2286 EOWRITE4(sc, port, v | EHCI_PS_PEC); 2287 break; 2288 case UHF_C_PORT_SUSPEND: 2289 /* how? */ 2290 break; 2291 case UHF_C_PORT_OVER_CURRENT: 2292 EOWRITE4(sc, port, v | EHCI_PS_OCC); 2293 break; 2294 case UHF_C_PORT_RESET: 2295 sc->sc_isreset[index] = 0; 2296 break; 2297 default: 2298 err = USBD_IOERROR; 2299 goto ret; 2300 } 2301 #if 0 2302 switch(value) { 2303 case UHF_C_PORT_CONNECTION: 2304 case UHF_C_PORT_ENABLE: 2305 case UHF_C_PORT_SUSPEND: 2306 case UHF_C_PORT_OVER_CURRENT: 2307 case UHF_C_PORT_RESET: 2308 default: 2309 break; 2310 } 2311 #endif 2312 break; 2313 case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): 2314 if (len == 0) 2315 break; 2316 if ((value & 0xff) != 0) { 2317 err = USBD_IOERROR; 2318 goto ret; 2319 } 2320 hubd = ehci_hubd; 2321 hubd.bNbrPorts = sc->sc_noport; 2322 v = EOREAD4(sc, EHCI_HCSPARAMS); 2323 USETW(hubd.wHubCharacteristics, 2324 EHCI_HCS_PPC(v) ? UHD_PWR_INDIVIDUAL : UHD_PWR_NO_SWITCH | 2325 EHCI_HCS_P_INDICATOR(EREAD4(sc, EHCI_HCSPARAMS)) 2326 ? UHD_PORT_IND : 0); 2327 hubd.bPwrOn2PwrGood = 200; /* XXX can't find out? */ 2328 for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8) 2329 hubd.DeviceRemovable[i++] = 0; /* XXX can't find out? */ 2330 hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i; 2331 l = min(len, hubd.bDescLength); 2332 totlen = l; 2333 memcpy(buf, &hubd, l); 2334 break; 2335 case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): 2336 if (len != 4) { 2337 err = USBD_IOERROR; 2338 goto ret; 2339 } 2340 memset(buf, 0, len); /* ? XXX */ 2341 totlen = len; 2342 break; 2343 case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): 2344 DPRINTFN(8,("ehci_root_ctrl_start: get port status i=%d\n", 2345 index)); 2346 if (index < 1 || index > sc->sc_noport) { 2347 err = USBD_IOERROR; 2348 goto ret; 2349 } 2350 if (len != 4) { 2351 err = USBD_IOERROR; 2352 goto ret; 2353 } 2354 v = EOREAD4(sc, EHCI_PORTSC(index)); 2355 DPRINTFN(8,("ehci_root_ctrl_start: port status=0x%04x\n", v)); 2356 2357 i = UPS_HIGH_SPEED; 2358 if (sc->sc_flags & EHCIF_ETTF) { 2359 /* 2360 * If we are doing embedded transaction translation, 2361 * then directly attached LS/FS devices are reset by 2362 * the EHCI controller itself. PSPD is encoded 2363 * the same way as in USBSTATUS. 2364 */ 2365 i = __SHIFTOUT(v, EHCI_PS_PSPD) * UPS_LOW_SPEED; 2366 } 2367 if (v & EHCI_PS_CS) i |= UPS_CURRENT_CONNECT_STATUS; 2368 if (v & EHCI_PS_PE) i |= UPS_PORT_ENABLED; 2369 if (v & EHCI_PS_SUSP) i |= UPS_SUSPEND; 2370 if (v & EHCI_PS_OCA) i |= UPS_OVERCURRENT_INDICATOR; 2371 if (v & EHCI_PS_PR) i |= UPS_RESET; 2372 if (v & EHCI_PS_PP) i |= UPS_PORT_POWER; 2373 if (sc->sc_vendor_port_status) 2374 i = sc->sc_vendor_port_status(sc, v, i); 2375 USETW(ps.wPortStatus, i); 2376 i = 0; 2377 if (v & EHCI_PS_CSC) i |= UPS_C_CONNECT_STATUS; 2378 if (v & EHCI_PS_PEC) i |= UPS_C_PORT_ENABLED; 2379 if (v & EHCI_PS_OCC) i |= UPS_C_OVERCURRENT_INDICATOR; 2380 if (sc->sc_isreset[index]) i |= UPS_C_PORT_RESET; 2381 USETW(ps.wPortChange, i); 2382 l = min(len, sizeof ps); 2383 memcpy(buf, &ps, l); 2384 totlen = l; 2385 break; 2386 case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): 2387 err = USBD_IOERROR; 2388 goto ret; 2389 case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): 2390 break; 2391 case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): 2392 if (index < 1 || index > sc->sc_noport) { 2393 err = USBD_IOERROR; 2394 goto ret; 2395 } 2396 port = EHCI_PORTSC(index); 2397 v = EOREAD4(sc, port); 2398 DPRINTFN(4, ("ehci_root_ctrl_start: portsc=0x%08x\n", v)); 2399 v &= ~EHCI_PS_CLEAR; 2400 switch(value) { 2401 case UHF_PORT_ENABLE: 2402 EOWRITE4(sc, port, v | EHCI_PS_PE); 2403 break; 2404 case UHF_PORT_SUSPEND: 2405 EOWRITE4(sc, port, v | EHCI_PS_SUSP); 2406 break; 2407 case UHF_PORT_RESET: 2408 DPRINTFN(5,("ehci_root_ctrl_start: reset port %d\n", 2409 index)); 2410 if (EHCI_PS_IS_LOWSPEED(v) 2411 && sc->sc_ncomp > 0 2412 && !(sc->sc_flags & EHCIF_ETTF)) { 2413 /* 2414 * Low speed device on non-ETTF controller or 2415 * unaccompanied controller, give up ownership. 2416 */ 2417 ehci_disown(sc, index, 1); 2418 break; 2419 } 2420 /* Start reset sequence. */ 2421 v &= ~ (EHCI_PS_PE | EHCI_PS_PR); 2422 EOWRITE4(sc, port, v | EHCI_PS_PR); 2423 /* Wait for reset to complete. */ 2424 usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY); 2425 if (sc->sc_dying) { 2426 err = USBD_IOERROR; 2427 goto ret; 2428 } 2429 /* 2430 * An embedded transaction translater will automatically 2431 * terminate the reset sequence so there's no need to 2432 * it. 2433 */ 2434 v = EOREAD4(sc, port); 2435 if (v & EHCI_PS_PR) { 2436 /* Terminate reset sequence. */ 2437 EOWRITE4(sc, port, v & ~EHCI_PS_PR); 2438 /* Wait for HC to complete reset. */ 2439 usb_delay_ms(&sc->sc_bus, 2440 EHCI_PORT_RESET_COMPLETE); 2441 if (sc->sc_dying) { 2442 err = USBD_IOERROR; 2443 goto ret; 2444 } 2445 } 2446 2447 v = EOREAD4(sc, port); 2448 DPRINTF(("ehci after reset, status=0x%08x\n", v)); 2449 if (v & EHCI_PS_PR) { 2450 printf("%s: port reset timeout\n", 2451 device_xname(sc->sc_dev)); 2452 return (USBD_TIMEOUT); 2453 } 2454 if (!(v & EHCI_PS_PE)) { 2455 /* Not a high speed device, give up ownership.*/ 2456 ehci_disown(sc, index, 0); 2457 break; 2458 } 2459 sc->sc_isreset[index] = 1; 2460 DPRINTF(("ehci port %d reset, status = 0x%08x\n", 2461 index, v)); 2462 break; 2463 case UHF_PORT_POWER: 2464 DPRINTFN(2,("ehci_root_ctrl_start: set port power " 2465 "%d (has PPC = %d)\n", index, 2466 sc->sc_hasppc)); 2467 if (sc->sc_hasppc) 2468 EOWRITE4(sc, port, v | EHCI_PS_PP); 2469 break; 2470 case UHF_PORT_TEST: 2471 DPRINTFN(2,("ehci_root_ctrl_start: set port test " 2472 "%d\n", index)); 2473 break; 2474 case UHF_PORT_INDICATOR: 2475 DPRINTFN(2,("ehci_root_ctrl_start: set port ind " 2476 "%d\n", index)); 2477 EOWRITE4(sc, port, v | EHCI_PS_PIC); 2478 break; 2479 default: 2480 err = USBD_IOERROR; 2481 goto ret; 2482 } 2483 break; 2484 case C(UR_CLEAR_TT_BUFFER, UT_WRITE_CLASS_OTHER): 2485 case C(UR_RESET_TT, UT_WRITE_CLASS_OTHER): 2486 case C(UR_GET_TT_STATE, UT_READ_CLASS_OTHER): 2487 case C(UR_STOP_TT, UT_WRITE_CLASS_OTHER): 2488 break; 2489 default: 2490 err = USBD_IOERROR; 2491 goto ret; 2492 } 2493 xfer->actlen = totlen; 2494 err = USBD_NORMAL_COMPLETION; 2495 ret: 2496 mutex_enter(&sc->sc_lock); 2497 xfer->status = err; 2498 usb_transfer_complete(xfer); 2499 mutex_exit(&sc->sc_lock); 2500 return (USBD_IN_PROGRESS); 2501 } 2502 2503 Static void 2504 ehci_disown(ehci_softc_t *sc, int index, int lowspeed) 2505 { 2506 int port; 2507 u_int32_t v; 2508 2509 DPRINTF(("ehci_disown: index=%d lowspeed=%d\n", index, lowspeed)); 2510 #ifdef DIAGNOSTIC 2511 if (sc->sc_npcomp != 0) { 2512 int i = (index-1) / sc->sc_npcomp; 2513 if (i >= sc->sc_ncomp) 2514 printf("%s: strange port\n", 2515 device_xname(sc->sc_dev)); 2516 else 2517 printf("%s: handing over %s speed device on " 2518 "port %d to %s\n", 2519 device_xname(sc->sc_dev), 2520 lowspeed ? "low" : "full", 2521 index, device_xname(sc->sc_comps[i])); 2522 } else { 2523 printf("%s: npcomp == 0\n", device_xname(sc->sc_dev)); 2524 } 2525 #endif 2526 port = EHCI_PORTSC(index); 2527 v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR; 2528 EOWRITE4(sc, port, v | EHCI_PS_PO); 2529 } 2530 2531 /* Abort a root control request. */ 2532 Static void 2533 ehci_root_ctrl_abort(usbd_xfer_handle xfer) 2534 { 2535 /* Nothing to do, all transfers are synchronous. */ 2536 } 2537 2538 /* Close the root pipe. */ 2539 Static void 2540 ehci_root_ctrl_close(usbd_pipe_handle pipe) 2541 { 2542 DPRINTF(("ehci_root_ctrl_close\n")); 2543 /* Nothing to do. */ 2544 } 2545 2546 Static void 2547 ehci_root_intr_done(usbd_xfer_handle xfer) 2548 { 2549 xfer->hcpriv = NULL; 2550 } 2551 2552 Static usbd_status 2553 ehci_root_intr_transfer(usbd_xfer_handle xfer) 2554 { 2555 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 2556 usbd_status err; 2557 2558 /* Insert last in queue. */ 2559 mutex_enter(&sc->sc_lock); 2560 err = usb_insert_transfer(xfer); 2561 mutex_exit(&sc->sc_lock); 2562 if (err) 2563 return (err); 2564 2565 /* Pipe isn't running, start first */ 2566 return (ehci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2567 } 2568 2569 Static usbd_status 2570 ehci_root_intr_start(usbd_xfer_handle xfer) 2571 { 2572 usbd_pipe_handle pipe = xfer->pipe; 2573 ehci_softc_t *sc = pipe->device->bus->hci_private; 2574 2575 if (sc->sc_dying) 2576 return (USBD_IOERROR); 2577 2578 mutex_enter(&sc->sc_lock); 2579 sc->sc_intrxfer = xfer; 2580 mutex_exit(&sc->sc_lock); 2581 2582 return (USBD_IN_PROGRESS); 2583 } 2584 2585 /* Abort a root interrupt request. */ 2586 Static void 2587 ehci_root_intr_abort(usbd_xfer_handle xfer) 2588 { 2589 #ifdef DIAGNOSTIC 2590 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 2591 #endif 2592 2593 KASSERT(mutex_owned(&sc->sc_lock)); 2594 if (xfer->pipe->intrxfer == xfer) { 2595 DPRINTF(("ehci_root_intr_abort: remove\n")); 2596 xfer->pipe->intrxfer = NULL; 2597 } 2598 xfer->status = USBD_CANCELLED; 2599 usb_transfer_complete(xfer); 2600 } 2601 2602 /* Close the root pipe. */ 2603 Static void 2604 ehci_root_intr_close(usbd_pipe_handle pipe) 2605 { 2606 ehci_softc_t *sc = pipe->device->bus->hci_private; 2607 2608 KASSERT(mutex_owned(&sc->sc_lock)); 2609 2610 DPRINTF(("ehci_root_intr_close\n")); 2611 2612 sc->sc_intrxfer = NULL; 2613 } 2614 2615 Static void 2616 ehci_root_ctrl_done(usbd_xfer_handle xfer) 2617 { 2618 xfer->hcpriv = NULL; 2619 } 2620 2621 /************************/ 2622 2623 Static ehci_soft_qh_t * 2624 ehci_alloc_sqh(ehci_softc_t *sc) 2625 { 2626 ehci_soft_qh_t *sqh; 2627 usbd_status err; 2628 int i, offs; 2629 usb_dma_t dma; 2630 2631 if (sc->sc_freeqhs == NULL) { 2632 DPRINTFN(2, ("ehci_alloc_sqh: allocating chunk\n")); 2633 err = usb_allocmem(&sc->sc_bus, EHCI_SQH_SIZE * EHCI_SQH_CHUNK, 2634 EHCI_PAGE_SIZE, &dma); 2635 #ifdef EHCI_DEBUG 2636 if (err) 2637 printf("ehci_alloc_sqh: usb_allocmem()=%d\n", err); 2638 #endif 2639 if (err) 2640 return (NULL); 2641 for(i = 0; i < EHCI_SQH_CHUNK; i++) { 2642 offs = i * EHCI_SQH_SIZE; 2643 sqh = KERNADDR(&dma, offs); 2644 sqh->physaddr = DMAADDR(&dma, offs); 2645 sqh->dma = dma; 2646 sqh->offs = offs; 2647 sqh->next = sc->sc_freeqhs; 2648 sc->sc_freeqhs = sqh; 2649 } 2650 } 2651 sqh = sc->sc_freeqhs; 2652 sc->sc_freeqhs = sqh->next; 2653 memset(&sqh->qh, 0, sizeof(ehci_qh_t)); 2654 sqh->next = NULL; 2655 return (sqh); 2656 } 2657 2658 Static void 2659 ehci_free_sqh(ehci_softc_t *sc, ehci_soft_qh_t *sqh) 2660 { 2661 sqh->next = sc->sc_freeqhs; 2662 sc->sc_freeqhs = sqh; 2663 } 2664 2665 Static ehci_soft_qtd_t * 2666 ehci_alloc_sqtd(ehci_softc_t *sc) 2667 { 2668 ehci_soft_qtd_t *sqtd = NULL; 2669 usbd_status err; 2670 int i, offs; 2671 usb_dma_t dma; 2672 2673 if (sc->sc_freeqtds == NULL) { 2674 DPRINTFN(2, ("ehci_alloc_sqtd: allocating chunk\n")); 2675 2676 err = usb_allocmem(&sc->sc_bus, EHCI_SQTD_SIZE*EHCI_SQTD_CHUNK, 2677 EHCI_PAGE_SIZE, &dma); 2678 #ifdef EHCI_DEBUG 2679 if (err) 2680 printf("ehci_alloc_sqtd: usb_allocmem()=%d\n", err); 2681 #endif 2682 if (err) 2683 goto done; 2684 2685 for(i = 0; i < EHCI_SQTD_CHUNK; i++) { 2686 offs = i * EHCI_SQTD_SIZE; 2687 sqtd = KERNADDR(&dma, offs); 2688 sqtd->physaddr = DMAADDR(&dma, offs); 2689 sqtd->dma = dma; 2690 sqtd->offs = offs; 2691 2692 sqtd->nextqtd = sc->sc_freeqtds; 2693 sc->sc_freeqtds = sqtd; 2694 } 2695 } 2696 2697 sqtd = sc->sc_freeqtds; 2698 sc->sc_freeqtds = sqtd->nextqtd; 2699 memset(&sqtd->qtd, 0, sizeof(ehci_qtd_t)); 2700 sqtd->nextqtd = NULL; 2701 sqtd->xfer = NULL; 2702 2703 done: 2704 return (sqtd); 2705 } 2706 2707 Static void 2708 ehci_free_sqtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd) 2709 { 2710 2711 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 2712 2713 sqtd->nextqtd = sc->sc_freeqtds; 2714 sc->sc_freeqtds = sqtd; 2715 } 2716 2717 Static usbd_status 2718 ehci_alloc_sqtd_chain(struct ehci_pipe *epipe, ehci_softc_t *sc, 2719 int alen, int rd, usbd_xfer_handle xfer, 2720 ehci_soft_qtd_t **sp, ehci_soft_qtd_t **ep) 2721 { 2722 ehci_soft_qtd_t *next, *cur; 2723 ehci_physaddr_t nextphys; 2724 u_int32_t qtdstatus; 2725 int len, curlen, mps; 2726 int i, tog; 2727 int pages, pageoffs; 2728 bus_size_t curoffs; 2729 vaddr_t va, va_offs; 2730 usb_dma_t *dma = &xfer->dmabuf; 2731 u_int16_t flags = xfer->flags; 2732 paddr_t a; 2733 2734 DPRINTFN(alen<4*4096,("ehci_alloc_sqtd_chain: start len=%d\n", alen)); 2735 2736 len = alen; 2737 qtdstatus = EHCI_QTD_ACTIVE | 2738 EHCI_QTD_SET_PID(rd ? EHCI_QTD_PID_IN : EHCI_QTD_PID_OUT) | 2739 EHCI_QTD_SET_CERR(3) 2740 /* IOC set below */ 2741 /* BYTES set below */ 2742 ; 2743 mps = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); 2744 tog = epipe->nexttoggle; 2745 qtdstatus |= EHCI_QTD_SET_TOGGLE(tog); 2746 2747 cur = ehci_alloc_sqtd(sc); 2748 *sp = cur; 2749 if (cur == NULL) 2750 goto nomem; 2751 2752 usb_syncmem(dma, 0, alen, 2753 rd ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 2754 curoffs = 0; 2755 for (;;) { 2756 /* The EHCI hardware can handle at most 5 pages. */ 2757 va_offs = (vaddr_t)KERNADDR(dma, curoffs); 2758 va_offs = EHCI_PAGE_OFFSET(va_offs); 2759 if (len-curoffs < EHCI_QTD_NBUFFERS*EHCI_PAGE_SIZE - va_offs) { 2760 /* we can handle it in this QTD */ 2761 curlen = len - curoffs; 2762 } else { 2763 /* must use multiple TDs, fill as much as possible. */ 2764 curlen = EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE - va_offs; 2765 2766 /* the length must be a multiple of the max size */ 2767 curlen -= curlen % mps; 2768 DPRINTFN(1,("ehci_alloc_sqtd_chain: multiple QTDs, " 2769 "curlen=%d\n", curlen)); 2770 #ifdef DIAGNOSTIC 2771 if (curlen == 0) 2772 panic("ehci_alloc_sqtd_chain: curlen == 0"); 2773 #endif 2774 } 2775 DPRINTFN(4,("ehci_alloc_sqtd_chain: len=%d curlen=%d " 2776 "curoffs=%zu\n", len, curlen, (size_t)curoffs)); 2777 2778 /* 2779 * Allocate another transfer if there's more data left, 2780 * or if force last short transfer flag is set and we're 2781 * allocating a multiple of the max packet size. 2782 */ 2783 2784 if (curoffs + curlen != len || 2785 ((curlen % mps) == 0 && !rd && curlen != 0 && 2786 (flags & USBD_FORCE_SHORT_XFER))) { 2787 next = ehci_alloc_sqtd(sc); 2788 if (next == NULL) 2789 goto nomem; 2790 nextphys = htole32(next->physaddr); 2791 } else { 2792 next = NULL; 2793 nextphys = EHCI_NULL; 2794 } 2795 2796 /* Find number of pages we'll be using, insert dma addresses */ 2797 pages = EHCI_PAGE(curlen + EHCI_PAGE_SIZE -1) >> 12; 2798 KASSERT(pages <= EHCI_QTD_NBUFFERS); 2799 pageoffs = EHCI_PAGE(curoffs); 2800 for (i = 0; i < pages; i++) { 2801 a = DMAADDR(dma, pageoffs + i * EHCI_PAGE_SIZE); 2802 cur->qtd.qtd_buffer[i] = htole32(a & 0xFFFFF000); 2803 /* Cast up to avoid compiler warnings */ 2804 cur->qtd.qtd_buffer_hi[i] = htole32((uint64_t)a >> 32); 2805 } 2806 2807 /* First buffer pointer requires a page offset to start at */ 2808 va = (vaddr_t)KERNADDR(dma, curoffs); 2809 cur->qtd.qtd_buffer[0] |= htole32(EHCI_PAGE_OFFSET(va)); 2810 2811 cur->nextqtd = next; 2812 cur->qtd.qtd_next = cur->qtd.qtd_altnext = nextphys; 2813 cur->qtd.qtd_status = 2814 htole32(qtdstatus | EHCI_QTD_SET_BYTES(curlen)); 2815 cur->xfer = xfer; 2816 cur->len = curlen; 2817 2818 DPRINTFN(10,("ehci_alloc_sqtd_chain: cbp=0x%08zx end=0x%08zx\n", 2819 (size_t)curoffs, (size_t)(curoffs + curlen))); 2820 2821 /* adjust the toggle based on the number of packets in this 2822 qtd */ 2823 if (((curlen + mps - 1) / mps) & 1) { 2824 tog ^= 1; 2825 qtdstatus ^= EHCI_QTD_TOGGLE_MASK; 2826 } 2827 if (next == NULL) 2828 break; 2829 usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), 2830 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2831 DPRINTFN(10,("ehci_alloc_sqtd_chain: extend chain\n")); 2832 if (len) 2833 curoffs += curlen; 2834 cur = next; 2835 } 2836 cur->qtd.qtd_status |= htole32(EHCI_QTD_IOC); 2837 usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), 2838 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2839 *ep = cur; 2840 epipe->nexttoggle = tog; 2841 2842 DPRINTFN(10,("ehci_alloc_sqtd_chain: return sqtd=%p sqtdend=%p\n", 2843 *sp, *ep)); 2844 2845 return (USBD_NORMAL_COMPLETION); 2846 2847 nomem: 2848 /* XXX free chain */ 2849 DPRINTFN(-1,("ehci_alloc_sqtd_chain: no memory\n")); 2850 return (USBD_NOMEM); 2851 } 2852 2853 Static void 2854 ehci_free_sqtd_chain(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd, 2855 ehci_soft_qtd_t *sqtdend) 2856 { 2857 ehci_soft_qtd_t *p; 2858 int i; 2859 2860 DPRINTFN(10,("ehci_free_sqtd_chain: sqtd=%p sqtdend=%p\n", 2861 sqtd, sqtdend)); 2862 2863 for (i = 0; sqtd != sqtdend; sqtd = p, i++) { 2864 p = sqtd->nextqtd; 2865 ehci_free_sqtd(sc, sqtd); 2866 } 2867 } 2868 2869 Static ehci_soft_itd_t * 2870 ehci_alloc_itd(ehci_softc_t *sc) 2871 { 2872 struct ehci_soft_itd *itd, *freeitd; 2873 usbd_status err; 2874 int i, offs, frindex, previndex; 2875 usb_dma_t dma; 2876 2877 mutex_enter(&sc->sc_lock); 2878 2879 /* Find an itd that wasn't freed this frame or last frame. This can 2880 * discard itds that were freed before frindex wrapped around 2881 * XXX - can this lead to thrashing? Could fix by enabling wrap-around 2882 * interrupt and fiddling with list when that happens */ 2883 frindex = (EOREAD4(sc, EHCI_FRINDEX) + 1) >> 3; 2884 previndex = (frindex != 0) ? frindex - 1 : sc->sc_flsize; 2885 2886 freeitd = NULL; 2887 LIST_FOREACH(itd, &sc->sc_freeitds, u.free_list) { 2888 if (itd == NULL) 2889 break; 2890 if (itd->slot != frindex && itd->slot != previndex) { 2891 freeitd = itd; 2892 break; 2893 } 2894 } 2895 2896 if (freeitd == NULL) { 2897 DPRINTFN(2, ("ehci_alloc_itd allocating chunk\n")); 2898 err = usb_allocmem(&sc->sc_bus, EHCI_ITD_SIZE * EHCI_ITD_CHUNK, 2899 EHCI_PAGE_SIZE, &dma); 2900 2901 if (err) { 2902 DPRINTF(("ehci_alloc_itd, alloc returned %d\n", err)); 2903 mutex_exit(&sc->sc_lock); 2904 return NULL; 2905 } 2906 2907 for (i = 0; i < EHCI_ITD_CHUNK; i++) { 2908 offs = i * EHCI_ITD_SIZE; 2909 itd = KERNADDR(&dma, offs); 2910 itd->physaddr = DMAADDR(&dma, offs); 2911 itd->dma = dma; 2912 itd->offs = offs; 2913 LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); 2914 } 2915 freeitd = LIST_FIRST(&sc->sc_freeitds); 2916 } 2917 2918 itd = freeitd; 2919 LIST_REMOVE(itd, u.free_list); 2920 memset(&itd->itd, 0, sizeof(ehci_itd_t)); 2921 usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), 2922 sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE | 2923 BUS_DMASYNC_PREREAD); 2924 2925 itd->u.frame_list.next = NULL; 2926 itd->u.frame_list.prev = NULL; 2927 itd->xfer_next = NULL; 2928 itd->slot = 0; 2929 2930 mutex_exit(&sc->sc_lock); 2931 2932 return itd; 2933 } 2934 2935 Static void 2936 ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd) 2937 { 2938 2939 KASSERT(mutex_owned(&sc->sc_lock)); 2940 2941 LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); 2942 } 2943 2944 /****************/ 2945 2946 /* 2947 * Close a reqular pipe. 2948 * Assumes that there are no pending transactions. 2949 */ 2950 Static void 2951 ehci_close_pipe(usbd_pipe_handle pipe, ehci_soft_qh_t *head) 2952 { 2953 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 2954 ehci_softc_t *sc = pipe->device->bus->hci_private; 2955 ehci_soft_qh_t *sqh = epipe->sqh; 2956 2957 KASSERT(mutex_owned(&sc->sc_lock)); 2958 2959 ehci_rem_qh(sc, sqh, head); 2960 ehci_free_sqh(sc, epipe->sqh); 2961 } 2962 2963 /* 2964 * Abort a device request. 2965 * If this routine is called at splusb() it guarantees that the request 2966 * will be removed from the hardware scheduling and that the callback 2967 * for it will be called with USBD_CANCELLED status. 2968 * It's impossible to guarantee that the requested transfer will not 2969 * have happened since the hardware runs concurrently. 2970 * If the transaction has already happened we rely on the ordinary 2971 * interrupt processing to process it. 2972 * XXX This is most probably wrong. 2973 * XXXMRG this doesn't make sense anymore. 2974 */ 2975 Static void 2976 ehci_abort_xfer(usbd_xfer_handle xfer, usbd_status status) 2977 { 2978 #define exfer EXFER(xfer) 2979 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 2980 ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; 2981 ehci_soft_qh_t *sqh = epipe->sqh; 2982 ehci_soft_qtd_t *sqtd; 2983 ehci_physaddr_t cur; 2984 u_int32_t qhstatus; 2985 int hit; 2986 int wake; 2987 2988 DPRINTF(("ehci_abort_xfer: xfer=%p pipe=%p\n", xfer, epipe)); 2989 2990 KASSERT(mutex_owned(&sc->sc_lock)); 2991 2992 if (sc->sc_dying) { 2993 /* If we're dying, just do the software part. */ 2994 xfer->status = status; /* make software ignore it */ 2995 callout_stop(&xfer->timeout_handle); 2996 usb_transfer_complete(xfer); 2997 return; 2998 } 2999 3000 if (cpu_intr_p() || cpu_softintr_p()) 3001 panic("ehci_abort_xfer: not in process context"); 3002 3003 /* 3004 * If an abort is already in progress then just wait for it to 3005 * complete and return. 3006 */ 3007 if (xfer->hcflags & UXFER_ABORTING) { 3008 DPRINTFN(2, ("ehci_abort_xfer: already aborting\n")); 3009 #ifdef DIAGNOSTIC 3010 if (status == USBD_TIMEOUT) 3011 printf("ehci_abort_xfer: TIMEOUT while aborting\n"); 3012 #endif 3013 /* Override the status which might be USBD_TIMEOUT. */ 3014 xfer->status = status; 3015 DPRINTFN(2, ("ehci_abort_xfer: waiting for abort to finish\n")); 3016 xfer->hcflags |= UXFER_ABORTWAIT; 3017 while (xfer->hcflags & UXFER_ABORTING) 3018 cv_wait(&xfer->hccv, &sc->sc_lock); 3019 return; 3020 } 3021 xfer->hcflags |= UXFER_ABORTING; 3022 3023 /* 3024 * Step 1: Make interrupt routine and hardware ignore xfer. 3025 */ 3026 xfer->status = status; /* make software ignore it */ 3027 callout_stop(&xfer->timeout_handle); 3028 3029 usb_syncmem(&sqh->dma, 3030 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 3031 sizeof(sqh->qh.qh_qtd.qtd_status), 3032 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3033 qhstatus = sqh->qh.qh_qtd.qtd_status; 3034 sqh->qh.qh_qtd.qtd_status = qhstatus | htole32(EHCI_QTD_HALTED); 3035 usb_syncmem(&sqh->dma, 3036 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 3037 sizeof(sqh->qh.qh_qtd.qtd_status), 3038 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3039 for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { 3040 usb_syncmem(&sqtd->dma, 3041 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 3042 sizeof(sqtd->qtd.qtd_status), 3043 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3044 sqtd->qtd.qtd_status |= htole32(EHCI_QTD_HALTED); 3045 usb_syncmem(&sqtd->dma, 3046 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 3047 sizeof(sqtd->qtd.qtd_status), 3048 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3049 if (sqtd == exfer->sqtdend) 3050 break; 3051 } 3052 3053 /* 3054 * Step 2: Wait until we know hardware has finished any possible 3055 * use of the xfer. Also make sure the soft interrupt routine 3056 * has run. 3057 */ 3058 ehci_sync_hc(sc); 3059 sc->sc_softwake = 1; 3060 usb_schedsoftintr(&sc->sc_bus); 3061 cv_wait(&sc->sc_softwake_cv, &sc->sc_lock); 3062 3063 /* 3064 * Step 3: Remove any vestiges of the xfer from the hardware. 3065 * The complication here is that the hardware may have executed 3066 * beyond the xfer we're trying to abort. So as we're scanning 3067 * the TDs of this xfer we check if the hardware points to 3068 * any of them. 3069 */ 3070 3071 usb_syncmem(&sqh->dma, 3072 sqh->offs + offsetof(ehci_qh_t, qh_curqtd), 3073 sizeof(sqh->qh.qh_curqtd), 3074 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3075 cur = EHCI_LINK_ADDR(le32toh(sqh->qh.qh_curqtd)); 3076 hit = 0; 3077 for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { 3078 hit |= cur == sqtd->physaddr; 3079 if (sqtd == exfer->sqtdend) 3080 break; 3081 } 3082 sqtd = sqtd->nextqtd; 3083 /* Zap curqtd register if hardware pointed inside the xfer. */ 3084 if (hit && sqtd != NULL) { 3085 DPRINTFN(1,("ehci_abort_xfer: cur=0x%08x\n", sqtd->physaddr)); 3086 sqh->qh.qh_curqtd = htole32(sqtd->physaddr); /* unlink qTDs */ 3087 usb_syncmem(&sqh->dma, 3088 sqh->offs + offsetof(ehci_qh_t, qh_curqtd), 3089 sizeof(sqh->qh.qh_curqtd), 3090 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3091 sqh->qh.qh_qtd.qtd_status = qhstatus; 3092 usb_syncmem(&sqh->dma, 3093 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 3094 sizeof(sqh->qh.qh_qtd.qtd_status), 3095 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3096 } else { 3097 DPRINTFN(1,("ehci_abort_xfer: no hit\n")); 3098 } 3099 3100 /* 3101 * Step 4: Execute callback. 3102 */ 3103 #ifdef DIAGNOSTIC 3104 exfer->isdone = 1; 3105 #endif 3106 wake = xfer->hcflags & UXFER_ABORTWAIT; 3107 xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); 3108 usb_transfer_complete(xfer); 3109 if (wake) { 3110 cv_broadcast(&xfer->hccv); 3111 } 3112 3113 KASSERT(mutex_owned(&sc->sc_lock)); 3114 #undef exfer 3115 } 3116 3117 Static void 3118 ehci_abort_isoc_xfer(usbd_xfer_handle xfer, usbd_status status) 3119 { 3120 ehci_isoc_trans_t trans_status; 3121 struct ehci_pipe *epipe; 3122 struct ehci_xfer *exfer; 3123 ehci_softc_t *sc; 3124 struct ehci_soft_itd *itd; 3125 int i, wake; 3126 3127 epipe = (struct ehci_pipe *) xfer->pipe; 3128 exfer = EXFER(xfer); 3129 sc = epipe->pipe.device->bus->hci_private; 3130 3131 DPRINTF(("ehci_abort_isoc_xfer: xfer %p pipe %p\n", xfer, epipe)); 3132 3133 KASSERT(mutex_owned(&sc->sc_lock)); 3134 3135 if (sc->sc_dying) { 3136 xfer->status = status; 3137 callout_stop(&xfer->timeout_handle); 3138 usb_transfer_complete(xfer); 3139 return; 3140 } 3141 3142 if (xfer->hcflags & UXFER_ABORTING) { 3143 DPRINTFN(2, ("ehci_abort_isoc_xfer: already aborting\n")); 3144 3145 #ifdef DIAGNOSTIC 3146 if (status == USBD_TIMEOUT) 3147 printf("ehci_abort_isoc_xfer: TIMEOUT while aborting\n"); 3148 #endif 3149 3150 xfer->status = status; 3151 DPRINTFN(2, ("ehci_abort_isoc_xfer: waiting for abort to finish\n")); 3152 xfer->hcflags |= UXFER_ABORTWAIT; 3153 while (xfer->hcflags & UXFER_ABORTING) 3154 cv_wait(&xfer->hccv, &sc->sc_lock); 3155 goto done; 3156 } 3157 xfer->hcflags |= UXFER_ABORTING; 3158 3159 xfer->status = status; 3160 callout_stop(&xfer->timeout_handle); 3161 3162 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 3163 usb_syncmem(&itd->dma, 3164 itd->offs + offsetof(ehci_itd_t, itd_ctl), 3165 sizeof(itd->itd.itd_ctl), 3166 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3167 3168 for (i = 0; i < 8; i++) { 3169 trans_status = le32toh(itd->itd.itd_ctl[i]); 3170 trans_status &= ~EHCI_ITD_ACTIVE; 3171 itd->itd.itd_ctl[i] = htole32(trans_status); 3172 } 3173 3174 usb_syncmem(&itd->dma, 3175 itd->offs + offsetof(ehci_itd_t, itd_ctl), 3176 sizeof(itd->itd.itd_ctl), 3177 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3178 } 3179 3180 sc->sc_softwake = 1; 3181 usb_schedsoftintr(&sc->sc_bus); 3182 cv_wait(&sc->sc_softwake_cv, &sc->sc_lock); 3183 3184 #ifdef DIAGNOSTIC 3185 exfer->isdone = 1; 3186 #endif 3187 wake = xfer->hcflags & UXFER_ABORTWAIT; 3188 xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); 3189 usb_transfer_complete(xfer); 3190 if (wake) { 3191 cv_broadcast(&xfer->hccv); 3192 } 3193 3194 done: 3195 KASSERT(mutex_owned(&sc->sc_lock)); 3196 return; 3197 } 3198 3199 Static void 3200 ehci_timeout(void *addr) 3201 { 3202 struct ehci_xfer *exfer = addr; 3203 struct ehci_pipe *epipe = (struct ehci_pipe *)exfer->xfer.pipe; 3204 ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; 3205 3206 DPRINTF(("ehci_timeout: exfer=%p\n", exfer)); 3207 #ifdef EHCI_DEBUG 3208 if (ehcidebug > 1) 3209 usbd_dump_pipe(exfer->xfer.pipe); 3210 #endif 3211 3212 if (sc->sc_dying) { 3213 mutex_enter(&sc->sc_lock); 3214 ehci_abort_xfer(&exfer->xfer, USBD_TIMEOUT); 3215 mutex_exit(&sc->sc_lock); 3216 return; 3217 } 3218 3219 /* Execute the abort in a process context. */ 3220 usb_init_task(&exfer->abort_task, ehci_timeout_task, addr, 3221 USB_TASKQ_MPSAFE); 3222 usb_add_task(exfer->xfer.pipe->device, &exfer->abort_task, 3223 USB_TASKQ_HC); 3224 } 3225 3226 Static void 3227 ehci_timeout_task(void *addr) 3228 { 3229 usbd_xfer_handle xfer = addr; 3230 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3231 3232 DPRINTF(("ehci_timeout_task: xfer=%p\n", xfer)); 3233 3234 mutex_enter(&sc->sc_lock); 3235 ehci_abort_xfer(xfer, USBD_TIMEOUT); 3236 mutex_exit(&sc->sc_lock); 3237 } 3238 3239 /************************/ 3240 3241 Static usbd_status 3242 ehci_device_ctrl_transfer(usbd_xfer_handle xfer) 3243 { 3244 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3245 usbd_status err; 3246 3247 /* Insert last in queue. */ 3248 mutex_enter(&sc->sc_lock); 3249 err = usb_insert_transfer(xfer); 3250 mutex_exit(&sc->sc_lock); 3251 if (err) 3252 return (err); 3253 3254 /* Pipe isn't running, start first */ 3255 return (ehci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3256 } 3257 3258 Static usbd_status 3259 ehci_device_ctrl_start(usbd_xfer_handle xfer) 3260 { 3261 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3262 usbd_status err; 3263 3264 if (sc->sc_dying) 3265 return (USBD_IOERROR); 3266 3267 #ifdef DIAGNOSTIC 3268 if (!(xfer->rqflags & URQ_REQUEST)) { 3269 /* XXX panic */ 3270 printf("ehci_device_ctrl_transfer: not a request\n"); 3271 return (USBD_INVAL); 3272 } 3273 #endif 3274 3275 err = ehci_device_request(xfer); 3276 if (err) { 3277 return (err); 3278 } 3279 3280 if (sc->sc_bus.use_polling) 3281 ehci_waitintr(sc, xfer); 3282 3283 return (USBD_IN_PROGRESS); 3284 } 3285 3286 Static void 3287 ehci_device_ctrl_done(usbd_xfer_handle xfer) 3288 { 3289 struct ehci_xfer *ex = EXFER(xfer); 3290 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3291 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3292 usb_device_request_t *req = &xfer->request; 3293 int len = UGETW(req->wLength); 3294 int rd = req->bmRequestType & UT_READ; 3295 3296 DPRINTFN(10,("ehci_ctrl_done: xfer=%p\n", xfer)); 3297 3298 KASSERT(mutex_owned(&sc->sc_lock)); 3299 3300 #ifdef DIAGNOSTIC 3301 if (!(xfer->rqflags & URQ_REQUEST)) { 3302 panic("ehci_ctrl_done: not a request"); 3303 } 3304 #endif 3305 3306 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3307 ehci_del_intr_list(sc, ex); /* remove from active list */ 3308 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3309 usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, 3310 BUS_DMASYNC_POSTWRITE); 3311 if (len) 3312 usb_syncmem(&xfer->dmabuf, 0, len, 3313 rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3314 } 3315 3316 DPRINTFN(5, ("ehci_ctrl_done: length=%d\n", xfer->actlen)); 3317 } 3318 3319 /* Abort a device control request. */ 3320 Static void 3321 ehci_device_ctrl_abort(usbd_xfer_handle xfer) 3322 { 3323 DPRINTF(("ehci_device_ctrl_abort: xfer=%p\n", xfer)); 3324 ehci_abort_xfer(xfer, USBD_CANCELLED); 3325 } 3326 3327 /* Close a device control pipe. */ 3328 Static void 3329 ehci_device_ctrl_close(usbd_pipe_handle pipe) 3330 { 3331 ehci_softc_t *sc = pipe->device->bus->hci_private; 3332 /*struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;*/ 3333 3334 KASSERT(mutex_owned(&sc->sc_lock)); 3335 3336 DPRINTF(("ehci_device_ctrl_close: pipe=%p\n", pipe)); 3337 3338 ehci_close_pipe(pipe, sc->sc_async_head); 3339 } 3340 3341 Static usbd_status 3342 ehci_device_request(usbd_xfer_handle xfer) 3343 { 3344 #define exfer EXFER(xfer) 3345 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3346 usb_device_request_t *req = &xfer->request; 3347 usbd_device_handle dev = epipe->pipe.device; 3348 ehci_softc_t *sc = dev->bus->hci_private; 3349 int addr = dev->address; 3350 ehci_soft_qtd_t *setup, *stat, *next; 3351 ehci_soft_qh_t *sqh; 3352 int isread; 3353 int len; 3354 usbd_status err; 3355 3356 isread = req->bmRequestType & UT_READ; 3357 len = UGETW(req->wLength); 3358 3359 DPRINTFN(3,("ehci_device_request: type=0x%02x, request=0x%02x, " 3360 "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n", 3361 req->bmRequestType, req->bRequest, UGETW(req->wValue), 3362 UGETW(req->wIndex), len, addr, 3363 epipe->pipe.endpoint->edesc->bEndpointAddress)); 3364 3365 setup = ehci_alloc_sqtd(sc); 3366 if (setup == NULL) { 3367 err = USBD_NOMEM; 3368 goto bad1; 3369 } 3370 stat = ehci_alloc_sqtd(sc); 3371 if (stat == NULL) { 3372 err = USBD_NOMEM; 3373 goto bad2; 3374 } 3375 3376 mutex_enter(&sc->sc_lock); 3377 3378 sqh = epipe->sqh; 3379 3380 /* 3381 * Update device address and length since they may have changed 3382 * during the setup of the control pipe in usbd_new_device(). 3383 */ 3384 /* XXX This only needs to be done once, but it's too early in open. */ 3385 /* XXXX Should not touch ED here! */ 3386 sqh->qh.qh_endp = 3387 (sqh->qh.qh_endp & htole32(~(EHCI_QH_ADDRMASK | EHCI_QH_MPLMASK))) | 3388 htole32( 3389 EHCI_QH_SET_ADDR(addr) | 3390 EHCI_QH_SET_MPL(UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize)) 3391 ); 3392 3393 /* Set up data transaction */ 3394 if (len != 0) { 3395 ehci_soft_qtd_t *end; 3396 3397 /* Start toggle at 1. */ 3398 epipe->nexttoggle = 1; 3399 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, 3400 &next, &end); 3401 if (err) 3402 goto bad3; 3403 end->qtd.qtd_status &= htole32(~EHCI_QTD_IOC); 3404 end->nextqtd = stat; 3405 end->qtd.qtd_next = 3406 end->qtd.qtd_altnext = htole32(stat->physaddr); 3407 usb_syncmem(&end->dma, end->offs, sizeof(end->qtd), 3408 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3409 } else { 3410 next = stat; 3411 } 3412 3413 memcpy(KERNADDR(&epipe->u.ctl.reqdma, 0), req, sizeof *req); 3414 usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, BUS_DMASYNC_PREWRITE); 3415 3416 /* Clear toggle */ 3417 setup->qtd.qtd_status = htole32( 3418 EHCI_QTD_ACTIVE | 3419 EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) | 3420 EHCI_QTD_SET_CERR(3) | 3421 EHCI_QTD_SET_TOGGLE(0) | 3422 EHCI_QTD_SET_BYTES(sizeof *req) 3423 ); 3424 setup->qtd.qtd_buffer[0] = htole32(DMAADDR(&epipe->u.ctl.reqdma, 0)); 3425 setup->qtd.qtd_buffer_hi[0] = 0; 3426 setup->nextqtd = next; 3427 setup->qtd.qtd_next = setup->qtd.qtd_altnext = htole32(next->physaddr); 3428 setup->xfer = xfer; 3429 setup->len = sizeof *req; 3430 usb_syncmem(&setup->dma, setup->offs, sizeof(setup->qtd), 3431 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3432 3433 stat->qtd.qtd_status = htole32( 3434 EHCI_QTD_ACTIVE | 3435 EHCI_QTD_SET_PID(isread ? EHCI_QTD_PID_OUT : EHCI_QTD_PID_IN) | 3436 EHCI_QTD_SET_CERR(3) | 3437 EHCI_QTD_SET_TOGGLE(1) | 3438 EHCI_QTD_IOC 3439 ); 3440 stat->qtd.qtd_buffer[0] = 0; /* XXX not needed? */ 3441 stat->qtd.qtd_buffer_hi[0] = 0; /* XXX not needed? */ 3442 stat->nextqtd = NULL; 3443 stat->qtd.qtd_next = stat->qtd.qtd_altnext = EHCI_NULL; 3444 stat->xfer = xfer; 3445 stat->len = 0; 3446 usb_syncmem(&stat->dma, stat->offs, sizeof(stat->qtd), 3447 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3448 3449 #ifdef EHCI_DEBUG 3450 if (ehcidebug > 5) { 3451 DPRINTF(("ehci_device_request:\n")); 3452 ehci_dump_sqh(sqh); 3453 ehci_dump_sqtds(setup); 3454 } 3455 #endif 3456 3457 exfer->sqtdstart = setup; 3458 exfer->sqtdend = stat; 3459 #ifdef DIAGNOSTIC 3460 if (!exfer->isdone) { 3461 printf("ehci_device_request: not done, exfer=%p\n", exfer); 3462 } 3463 exfer->isdone = 0; 3464 #endif 3465 3466 /* Insert qTD in QH list. */ 3467 ehci_set_qh_qtd(sqh, setup); /* also does usb_syncmem(sqh) */ 3468 if (xfer->timeout && !sc->sc_bus.use_polling) { 3469 callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), 3470 ehci_timeout, xfer); 3471 } 3472 ehci_add_intr_list(sc, exfer); 3473 xfer->status = USBD_IN_PROGRESS; 3474 mutex_exit(&sc->sc_lock); 3475 3476 #ifdef EHCI_DEBUG 3477 if (ehcidebug > 10) { 3478 DPRINTF(("ehci_device_request: status=%x\n", 3479 EOREAD4(sc, EHCI_USBSTS))); 3480 delay(10000); 3481 ehci_dump_regs(sc); 3482 ehci_dump_sqh(sc->sc_async_head); 3483 ehci_dump_sqh(sqh); 3484 ehci_dump_sqtds(setup); 3485 } 3486 #endif 3487 3488 return (USBD_NORMAL_COMPLETION); 3489 3490 bad3: 3491 mutex_exit(&sc->sc_lock); 3492 ehci_free_sqtd(sc, stat); 3493 bad2: 3494 ehci_free_sqtd(sc, setup); 3495 bad1: 3496 DPRINTFN(-1,("ehci_device_request: no memory\n")); 3497 mutex_enter(&sc->sc_lock); 3498 xfer->status = err; 3499 usb_transfer_complete(xfer); 3500 mutex_exit(&sc->sc_lock); 3501 return (err); 3502 #undef exfer 3503 } 3504 3505 /* 3506 * Some EHCI chips from VIA seem to trigger interrupts before writing back the 3507 * qTD status, or miss signalling occasionally under heavy load. If the host 3508 * machine is too fast, we we can miss transaction completion - when we scan 3509 * the active list the transaction still seems to be active. This generally 3510 * exhibits itself as a umass stall that never recovers. 3511 * 3512 * We work around this behaviour by setting up this callback after any softintr 3513 * that completes with transactions still pending, giving us another chance to 3514 * check for completion after the writeback has taken place. 3515 */ 3516 Static void 3517 ehci_intrlist_timeout(void *arg) 3518 { 3519 ehci_softc_t *sc = arg; 3520 3521 DPRINTF(("ehci_intrlist_timeout\n")); 3522 usb_schedsoftintr(&sc->sc_bus); 3523 } 3524 3525 /************************/ 3526 3527 Static usbd_status 3528 ehci_device_bulk_transfer(usbd_xfer_handle xfer) 3529 { 3530 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3531 usbd_status err; 3532 3533 /* Insert last in queue. */ 3534 mutex_enter(&sc->sc_lock); 3535 err = usb_insert_transfer(xfer); 3536 mutex_exit(&sc->sc_lock); 3537 if (err) 3538 return (err); 3539 3540 /* Pipe isn't running, start first */ 3541 return (ehci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3542 } 3543 3544 Static usbd_status 3545 ehci_device_bulk_start(usbd_xfer_handle xfer) 3546 { 3547 #define exfer EXFER(xfer) 3548 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3549 usbd_device_handle dev = epipe->pipe.device; 3550 ehci_softc_t *sc = dev->bus->hci_private; 3551 ehci_soft_qtd_t *data, *dataend; 3552 ehci_soft_qh_t *sqh; 3553 usbd_status err; 3554 int len, isread, endpt; 3555 3556 DPRINTFN(2, ("ehci_device_bulk_start: xfer=%p len=%d flags=%d\n", 3557 xfer, xfer->length, xfer->flags)); 3558 3559 if (sc->sc_dying) 3560 return (USBD_IOERROR); 3561 3562 #ifdef DIAGNOSTIC 3563 if (xfer->rqflags & URQ_REQUEST) 3564 panic("ehci_device_bulk_start: a request"); 3565 #endif 3566 3567 mutex_enter(&sc->sc_lock); 3568 3569 len = xfer->length; 3570 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3571 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3572 sqh = epipe->sqh; 3573 3574 epipe->u.bulk.length = len; 3575 3576 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, 3577 &dataend); 3578 if (err) { 3579 DPRINTFN(-1,("ehci_device_bulk_transfer: no memory\n")); 3580 xfer->status = err; 3581 usb_transfer_complete(xfer); 3582 mutex_exit(&sc->sc_lock); 3583 return (err); 3584 } 3585 3586 #ifdef EHCI_DEBUG 3587 if (ehcidebug > 5) { 3588 DPRINTF(("ehci_device_bulk_start: data(1)\n")); 3589 ehci_dump_sqh(sqh); 3590 ehci_dump_sqtds(data); 3591 } 3592 #endif 3593 3594 /* Set up interrupt info. */ 3595 exfer->sqtdstart = data; 3596 exfer->sqtdend = dataend; 3597 #ifdef DIAGNOSTIC 3598 if (!exfer->isdone) { 3599 printf("ehci_device_bulk_start: not done, ex=%p\n", exfer); 3600 } 3601 exfer->isdone = 0; 3602 #endif 3603 3604 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3605 if (xfer->timeout && !sc->sc_bus.use_polling) { 3606 callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), 3607 ehci_timeout, xfer); 3608 } 3609 ehci_add_intr_list(sc, exfer); 3610 xfer->status = USBD_IN_PROGRESS; 3611 mutex_exit(&sc->sc_lock); 3612 3613 #ifdef EHCI_DEBUG 3614 if (ehcidebug > 10) { 3615 DPRINTF(("ehci_device_bulk_start: data(2)\n")); 3616 delay(10000); 3617 DPRINTF(("ehci_device_bulk_start: data(3)\n")); 3618 ehci_dump_regs(sc); 3619 #if 0 3620 printf("async_head:\n"); 3621 ehci_dump_sqh(sc->sc_async_head); 3622 #endif 3623 printf("sqh:\n"); 3624 ehci_dump_sqh(sqh); 3625 ehci_dump_sqtds(data); 3626 } 3627 #endif 3628 3629 if (sc->sc_bus.use_polling) 3630 ehci_waitintr(sc, xfer); 3631 3632 return (USBD_IN_PROGRESS); 3633 #undef exfer 3634 } 3635 3636 Static void 3637 ehci_device_bulk_abort(usbd_xfer_handle xfer) 3638 { 3639 DPRINTF(("ehci_device_bulk_abort: xfer=%p\n", xfer)); 3640 ehci_abort_xfer(xfer, USBD_CANCELLED); 3641 } 3642 3643 /* 3644 * Close a device bulk pipe. 3645 */ 3646 Static void 3647 ehci_device_bulk_close(usbd_pipe_handle pipe) 3648 { 3649 ehci_softc_t *sc = pipe->device->bus->hci_private; 3650 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 3651 3652 KASSERT(mutex_owned(&sc->sc_lock)); 3653 3654 DPRINTF(("ehci_device_bulk_close: pipe=%p\n", pipe)); 3655 pipe->endpoint->datatoggle = epipe->nexttoggle; 3656 ehci_close_pipe(pipe, sc->sc_async_head); 3657 } 3658 3659 Static void 3660 ehci_device_bulk_done(usbd_xfer_handle xfer) 3661 { 3662 struct ehci_xfer *ex = EXFER(xfer); 3663 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3664 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3665 int endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3666 int rd = UE_GET_DIR(endpt) == UE_DIR_IN; 3667 3668 DPRINTFN(10,("ehci_bulk_done: xfer=%p, actlen=%d\n", 3669 xfer, xfer->actlen)); 3670 3671 KASSERT(mutex_owned(&sc->sc_lock)); 3672 3673 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3674 ehci_del_intr_list(sc, ex); /* remove from active list */ 3675 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3676 usb_syncmem(&xfer->dmabuf, 0, xfer->length, 3677 rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3678 } 3679 3680 DPRINTFN(5, ("ehci_bulk_done: length=%d\n", xfer->actlen)); 3681 } 3682 3683 /************************/ 3684 3685 Static usbd_status 3686 ehci_device_setintr(ehci_softc_t *sc, ehci_soft_qh_t *sqh, int ival) 3687 { 3688 struct ehci_soft_islot *isp; 3689 int islot, lev; 3690 3691 /* Find a poll rate that is large enough. */ 3692 for (lev = EHCI_IPOLLRATES - 1; lev > 0; lev--) 3693 if (EHCI_ILEV_IVAL(lev) <= ival) 3694 break; 3695 3696 /* Pick an interrupt slot at the right level. */ 3697 /* XXX could do better than picking at random */ 3698 sc->sc_rand = (sc->sc_rand + 191) % sc->sc_flsize; 3699 islot = EHCI_IQHIDX(lev, sc->sc_rand); 3700 3701 sqh->islot = islot; 3702 isp = &sc->sc_islots[islot]; 3703 mutex_enter(&sc->sc_lock); 3704 ehci_add_qh(sc, sqh, isp->sqh); 3705 mutex_exit(&sc->sc_lock); 3706 3707 return (USBD_NORMAL_COMPLETION); 3708 } 3709 3710 Static usbd_status 3711 ehci_device_intr_transfer(usbd_xfer_handle xfer) 3712 { 3713 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3714 usbd_status err; 3715 3716 /* Insert last in queue. */ 3717 mutex_enter(&sc->sc_lock); 3718 err = usb_insert_transfer(xfer); 3719 mutex_exit(&sc->sc_lock); 3720 if (err) 3721 return (err); 3722 3723 /* 3724 * Pipe isn't running (otherwise err would be USBD_INPROG), 3725 * so start it first. 3726 */ 3727 return (ehci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3728 } 3729 3730 Static usbd_status 3731 ehci_device_intr_start(usbd_xfer_handle xfer) 3732 { 3733 #define exfer EXFER(xfer) 3734 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3735 usbd_device_handle dev = xfer->pipe->device; 3736 ehci_softc_t *sc = dev->bus->hci_private; 3737 ehci_soft_qtd_t *data, *dataend; 3738 ehci_soft_qh_t *sqh; 3739 usbd_status err; 3740 int len, isread, endpt; 3741 3742 DPRINTFN(2, ("ehci_device_intr_start: xfer=%p len=%d flags=%d\n", 3743 xfer, xfer->length, xfer->flags)); 3744 3745 if (sc->sc_dying) 3746 return (USBD_IOERROR); 3747 3748 #ifdef DIAGNOSTIC 3749 if (xfer->rqflags & URQ_REQUEST) 3750 panic("ehci_device_intr_start: a request"); 3751 #endif 3752 3753 mutex_enter(&sc->sc_lock); 3754 3755 len = xfer->length; 3756 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3757 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3758 sqh = epipe->sqh; 3759 3760 epipe->u.intr.length = len; 3761 3762 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, 3763 &dataend); 3764 if (err) { 3765 DPRINTFN(-1, ("ehci_device_intr_start: no memory\n")); 3766 xfer->status = err; 3767 usb_transfer_complete(xfer); 3768 mutex_exit(&sc->sc_lock); 3769 return (err); 3770 } 3771 3772 #ifdef EHCI_DEBUG 3773 if (ehcidebug > 5) { 3774 DPRINTF(("ehci_device_intr_start: data(1)\n")); 3775 ehci_dump_sqh(sqh); 3776 ehci_dump_sqtds(data); 3777 } 3778 #endif 3779 3780 /* Set up interrupt info. */ 3781 exfer->sqtdstart = data; 3782 exfer->sqtdend = dataend; 3783 #ifdef DIAGNOSTIC 3784 if (!exfer->isdone) { 3785 printf("ehci_device_intr_start: not done, ex=%p\n", exfer); 3786 } 3787 exfer->isdone = 0; 3788 #endif 3789 3790 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3791 if (xfer->timeout && !sc->sc_bus.use_polling) { 3792 callout_reset(&xfer->timeout_handle, mstohz(xfer->timeout), 3793 ehci_timeout, xfer); 3794 } 3795 ehci_add_intr_list(sc, exfer); 3796 xfer->status = USBD_IN_PROGRESS; 3797 mutex_exit(&sc->sc_lock); 3798 3799 #ifdef EHCI_DEBUG 3800 if (ehcidebug > 10) { 3801 DPRINTF(("ehci_device_intr_start: data(2)\n")); 3802 delay(10000); 3803 DPRINTF(("ehci_device_intr_start: data(3)\n")); 3804 ehci_dump_regs(sc); 3805 printf("sqh:\n"); 3806 ehci_dump_sqh(sqh); 3807 ehci_dump_sqtds(data); 3808 } 3809 #endif 3810 3811 if (sc->sc_bus.use_polling) 3812 ehci_waitintr(sc, xfer); 3813 3814 return (USBD_IN_PROGRESS); 3815 #undef exfer 3816 } 3817 3818 Static void 3819 ehci_device_intr_abort(usbd_xfer_handle xfer) 3820 { 3821 DPRINTFN(1, ("ehci_device_intr_abort: xfer=%p\n", xfer)); 3822 if (xfer->pipe->intrxfer == xfer) { 3823 DPRINTFN(1, ("echi_device_intr_abort: remove\n")); 3824 xfer->pipe->intrxfer = NULL; 3825 } 3826 /* 3827 * XXX - abort_xfer uses ehci_sync_hc, which syncs via the advance 3828 * async doorbell. That's dependent on the async list, wheras 3829 * intr xfers are periodic, should not use this? 3830 */ 3831 ehci_abort_xfer(xfer, USBD_CANCELLED); 3832 } 3833 3834 Static void 3835 ehci_device_intr_close(usbd_pipe_handle pipe) 3836 { 3837 ehci_softc_t *sc = pipe->device->bus->hci_private; 3838 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 3839 struct ehci_soft_islot *isp; 3840 3841 KASSERT(mutex_owned(&sc->sc_lock)); 3842 3843 isp = &sc->sc_islots[epipe->sqh->islot]; 3844 ehci_close_pipe(pipe, isp->sqh); 3845 } 3846 3847 Static void 3848 ehci_device_intr_done(usbd_xfer_handle xfer) 3849 { 3850 #define exfer EXFER(xfer) 3851 struct ehci_xfer *ex = EXFER(xfer); 3852 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3853 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3854 ehci_soft_qtd_t *data, *dataend; 3855 ehci_soft_qh_t *sqh; 3856 usbd_status err; 3857 int len, isread, endpt; 3858 3859 DPRINTFN(10, ("ehci_device_intr_done: xfer=%p, actlen=%d\n", 3860 xfer, xfer->actlen)); 3861 3862 KASSERT(sc->sc_bus.use_polling || mutex_owned(&sc->sc_lock)); 3863 3864 if (xfer->pipe->repeat) { 3865 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3866 3867 len = epipe->u.intr.length; 3868 xfer->length = len; 3869 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3870 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3871 usb_syncmem(&xfer->dmabuf, 0, len, 3872 isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3873 sqh = epipe->sqh; 3874 3875 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, 3876 &data, &dataend); 3877 if (err) { 3878 DPRINTFN(-1, ("ehci_device_intr_done: no memory\n")); 3879 xfer->status = err; 3880 return; 3881 } 3882 3883 /* Set up interrupt info. */ 3884 exfer->sqtdstart = data; 3885 exfer->sqtdend = dataend; 3886 #ifdef DIAGNOSTIC 3887 if (!exfer->isdone) { 3888 printf("ehci_device_intr_done: not done, ex=%p\n", 3889 exfer); 3890 } 3891 exfer->isdone = 0; 3892 #endif 3893 3894 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3895 if (xfer->timeout && !sc->sc_bus.use_polling) { 3896 callout_reset(&xfer->timeout_handle, 3897 mstohz(xfer->timeout), ehci_timeout, xfer); 3898 } 3899 3900 xfer->status = USBD_IN_PROGRESS; 3901 } else if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3902 ehci_del_intr_list(sc, ex); /* remove from active list */ 3903 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3904 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3905 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3906 usb_syncmem(&xfer->dmabuf, 0, xfer->length, 3907 isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3908 } 3909 #undef exfer 3910 } 3911 3912 /************************/ 3913 3914 Static usbd_status 3915 ehci_device_isoc_transfer(usbd_xfer_handle xfer) 3916 { 3917 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3918 usbd_status err; 3919 3920 mutex_enter(&sc->sc_lock); 3921 err = usb_insert_transfer(xfer); 3922 mutex_exit(&sc->sc_lock); 3923 if (err && err != USBD_IN_PROGRESS) 3924 return err; 3925 3926 return ehci_device_isoc_start(xfer); 3927 } 3928 3929 Static usbd_status 3930 ehci_device_isoc_start(usbd_xfer_handle xfer) 3931 { 3932 struct ehci_pipe *epipe; 3933 usbd_device_handle dev; 3934 ehci_softc_t *sc; 3935 struct ehci_xfer *exfer; 3936 ehci_soft_itd_t *itd, *prev, *start, *stop; 3937 usb_dma_t *dma_buf; 3938 int i, j, k, frames, uframes, ufrperframe; 3939 int trans_count, offs, total_length; 3940 int frindex; 3941 3942 start = NULL; 3943 prev = NULL; 3944 itd = NULL; 3945 trans_count = 0; 3946 total_length = 0; 3947 exfer = (struct ehci_xfer *) xfer; 3948 sc = xfer->pipe->device->bus->hci_private; 3949 dev = xfer->pipe->device; 3950 epipe = (struct ehci_pipe *)xfer->pipe; 3951 3952 /* 3953 * To allow continuous transfers, above we start all transfers 3954 * immediately. However, we're still going to get usbd_start_next call 3955 * this when another xfer completes. So, check if this is already 3956 * in progress or not 3957 */ 3958 3959 if (exfer->itdstart != NULL) 3960 return USBD_IN_PROGRESS; 3961 3962 DPRINTFN(2, ("ehci_device_isoc_start: xfer %p len %d flags %d\n", 3963 xfer, xfer->length, xfer->flags)); 3964 3965 if (sc->sc_dying) 3966 return USBD_IOERROR; 3967 3968 /* 3969 * To avoid complication, don't allow a request right now that'll span 3970 * the entire frame table. To within 4 frames, to allow some leeway 3971 * on either side of where the hc currently is. 3972 */ 3973 if ((1 << (epipe->pipe.endpoint->edesc->bInterval)) * 3974 xfer->nframes >= (sc->sc_flsize - 4) * 8) { 3975 printf("ehci: isoc descriptor requested that spans the entire frametable, too many frames\n"); 3976 return USBD_INVAL; 3977 } 3978 3979 #ifdef DIAGNOSTIC 3980 if (xfer->rqflags & URQ_REQUEST) 3981 panic("ehci_device_isoc_start: request\n"); 3982 3983 if (!exfer->isdone) 3984 printf("ehci_device_isoc_start: not done, ex = %p\n", exfer); 3985 exfer->isdone = 0; 3986 #endif 3987 3988 /* 3989 * Step 1: Allocate and initialize itds, how many do we need? 3990 * One per transfer if interval >= 8 microframes, fewer if we use 3991 * multiple microframes per frame. 3992 */ 3993 3994 i = epipe->pipe.endpoint->edesc->bInterval; 3995 if (i > 16 || i == 0) { 3996 /* Spec page 271 says intervals > 16 are invalid */ 3997 DPRINTF(("ehci_device_isoc_start: bInvertal %d invalid\n", i)); 3998 return USBD_INVAL; 3999 } 4000 4001 ufrperframe = max(1, USB_UFRAMES_PER_FRAME / (1 << (i - 1))); 4002 frames = (xfer->nframes + (ufrperframe - 1)) / ufrperframe; 4003 uframes = USB_UFRAMES_PER_FRAME / ufrperframe; 4004 4005 if (frames == 0) { 4006 DPRINTF(("ehci_device_isoc_start: frames == 0\n")); 4007 return USBD_INVAL; 4008 } 4009 4010 dma_buf = &xfer->dmabuf; 4011 offs = 0; 4012 4013 for (i = 0; i < frames; i++) { 4014 int froffs = offs; 4015 itd = ehci_alloc_itd(sc); 4016 4017 if (prev != NULL) { 4018 prev->itd.itd_next = 4019 htole32(itd->physaddr | EHCI_LINK_ITD); 4020 usb_syncmem(&itd->dma, 4021 itd->offs + offsetof(ehci_itd_t, itd_next), 4022 sizeof(itd->itd.itd_next), BUS_DMASYNC_POSTWRITE); 4023 4024 prev->xfer_next = itd; 4025 } else { 4026 start = itd; 4027 } 4028 4029 /* 4030 * Step 1.5, initialize uframes 4031 */ 4032 for (j = 0; j < EHCI_ITD_NUFRAMES; j += uframes) { 4033 /* Calculate which page in the list this starts in */ 4034 int addr = DMAADDR(dma_buf, froffs); 4035 addr = EHCI_PAGE_OFFSET(addr); 4036 addr += (offs - froffs); 4037 addr = EHCI_PAGE(addr); 4038 addr /= EHCI_PAGE_SIZE; 4039 4040 /* This gets the initial offset into the first page, 4041 * looks how far further along the current uframe 4042 * offset is. Works out how many pages that is. 4043 */ 4044 4045 itd->itd.itd_ctl[j] = htole32 ( EHCI_ITD_ACTIVE | 4046 EHCI_ITD_SET_LEN(xfer->frlengths[trans_count]) | 4047 EHCI_ITD_SET_PG(addr) | 4048 EHCI_ITD_SET_OFFS(EHCI_PAGE_OFFSET(DMAADDR(dma_buf,offs)))); 4049 4050 total_length += xfer->frlengths[trans_count]; 4051 offs += xfer->frlengths[trans_count]; 4052 trans_count++; 4053 4054 if (trans_count >= xfer->nframes) { /*Set IOC*/ 4055 itd->itd.itd_ctl[j] |= htole32(EHCI_ITD_IOC); 4056 break; 4057 } 4058 } 4059 4060 /* Step 1.75, set buffer pointers. To simplify matters, all 4061 * pointers are filled out for the next 7 hardware pages in 4062 * the dma block, so no need to worry what pages to cover 4063 * and what to not. 4064 */ 4065 4066 for (j = 0; j < EHCI_ITD_NBUFFERS; j++) { 4067 /* 4068 * Don't try to lookup a page that's past the end 4069 * of buffer 4070 */ 4071 int page_offs = EHCI_PAGE(froffs + (EHCI_PAGE_SIZE * j)); 4072 if (page_offs >= dma_buf->block->size) 4073 break; 4074 4075 unsigned long long page = DMAADDR(dma_buf, page_offs); 4076 page = EHCI_PAGE(page); 4077 itd->itd.itd_bufr[j] = 4078 htole32(EHCI_ITD_SET_BPTR(page)); 4079 itd->itd.itd_bufr_hi[j] = 4080 htole32(page >> 32); 4081 } 4082 4083 /* 4084 * Other special values 4085 */ 4086 4087 k = epipe->pipe.endpoint->edesc->bEndpointAddress; 4088 itd->itd.itd_bufr[0] |= htole32(EHCI_ITD_SET_EP(UE_GET_ADDR(k)) | 4089 EHCI_ITD_SET_DADDR(epipe->pipe.device->address)); 4090 4091 k = (UE_GET_DIR(epipe->pipe.endpoint->edesc->bEndpointAddress)) 4092 ? 1 : 0; 4093 j = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); 4094 itd->itd.itd_bufr[1] |= htole32(EHCI_ITD_SET_DIR(k) | 4095 EHCI_ITD_SET_MAXPKT(UE_GET_SIZE(j))); 4096 4097 /* FIXME: handle invalid trans */ 4098 itd->itd.itd_bufr[2] |= 4099 htole32(EHCI_ITD_SET_MULTI(UE_GET_TRANS(j)+1)); 4100 4101 usb_syncmem(&itd->dma, 4102 itd->offs + offsetof(ehci_itd_t, itd_next), 4103 sizeof(ehci_itd_t), 4104 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4105 4106 prev = itd; 4107 } /* End of frame */ 4108 4109 stop = itd; 4110 stop->xfer_next = NULL; 4111 exfer->isoc_len = total_length; 4112 4113 usb_syncmem(&exfer->xfer.dmabuf, 0, total_length, 4114 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 4115 4116 /* 4117 * Part 2: Transfer descriptors have now been set up, now they must 4118 * be scheduled into the period frame list. Erk. Not wanting to 4119 * complicate matters, transfer is denied if the transfer spans 4120 * more than the period frame list. 4121 */ 4122 4123 mutex_enter(&sc->sc_lock); 4124 4125 /* Start inserting frames */ 4126 if (epipe->u.isoc.cur_xfers > 0) { 4127 frindex = epipe->u.isoc.next_frame; 4128 } else { 4129 frindex = EOREAD4(sc, EHCI_FRINDEX); 4130 frindex = frindex >> 3; /* Erase microframe index */ 4131 frindex += 2; 4132 } 4133 4134 if (frindex >= sc->sc_flsize) 4135 frindex &= (sc->sc_flsize - 1); 4136 4137 /* What's the frame interval? */ 4138 i = (1 << (epipe->pipe.endpoint->edesc->bInterval - 1)); 4139 if (i / USB_UFRAMES_PER_FRAME == 0) 4140 i = 1; 4141 else 4142 i /= USB_UFRAMES_PER_FRAME; 4143 4144 itd = start; 4145 for (j = 0; j < frames; j++) { 4146 if (itd == NULL) 4147 panic("ehci: unexpectedly ran out of isoc itds, isoc_start\n"); 4148 4149 itd->itd.itd_next = sc->sc_flist[frindex]; 4150 if (itd->itd.itd_next == 0) 4151 /* FIXME: frindex table gets initialized to NULL 4152 * or EHCI_NULL? */ 4153 itd->itd.itd_next = EHCI_NULL; 4154 4155 usb_syncmem(&itd->dma, 4156 itd->offs + offsetof(ehci_itd_t, itd_next), 4157 sizeof(itd->itd.itd_next), 4158 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4159 4160 sc->sc_flist[frindex] = htole32(EHCI_LINK_ITD | itd->physaddr); 4161 4162 usb_syncmem(&sc->sc_fldma, 4163 sizeof(ehci_link_t) * frindex, 4164 sizeof(ehci_link_t), 4165 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4166 4167 itd->u.frame_list.next = sc->sc_softitds[frindex]; 4168 sc->sc_softitds[frindex] = itd; 4169 if (itd->u.frame_list.next != NULL) 4170 itd->u.frame_list.next->u.frame_list.prev = itd; 4171 itd->slot = frindex; 4172 itd->u.frame_list.prev = NULL; 4173 4174 frindex += i; 4175 if (frindex >= sc->sc_flsize) 4176 frindex -= sc->sc_flsize; 4177 4178 itd = itd->xfer_next; 4179 } 4180 4181 epipe->u.isoc.cur_xfers++; 4182 epipe->u.isoc.next_frame = frindex; 4183 4184 exfer->itdstart = start; 4185 exfer->itdend = stop; 4186 exfer->sqtdstart = NULL; 4187 exfer->sqtdstart = NULL; 4188 4189 ehci_add_intr_list(sc, exfer); 4190 xfer->status = USBD_IN_PROGRESS; 4191 xfer->done = 0; 4192 mutex_exit(&sc->sc_lock); 4193 4194 if (sc->sc_bus.use_polling) { 4195 printf("Starting ehci isoc xfer with polling. Bad idea?\n"); 4196 ehci_waitintr(sc, xfer); 4197 } 4198 4199 return USBD_IN_PROGRESS; 4200 } 4201 4202 Static void 4203 ehci_device_isoc_abort(usbd_xfer_handle xfer) 4204 { 4205 DPRINTFN(1, ("ehci_device_isoc_abort: xfer = %p\n", xfer)); 4206 ehci_abort_isoc_xfer(xfer, USBD_CANCELLED); 4207 } 4208 4209 Static void 4210 ehci_device_isoc_close(usbd_pipe_handle pipe) 4211 { 4212 DPRINTFN(1, ("ehci_device_isoc_close: nothing in the pipe to free?\n")); 4213 } 4214 4215 Static void 4216 ehci_device_isoc_done(usbd_xfer_handle xfer) 4217 { 4218 struct ehci_xfer *exfer; 4219 ehci_softc_t *sc; 4220 struct ehci_pipe *epipe; 4221 4222 exfer = EXFER(xfer); 4223 sc = xfer->pipe->device->bus->hci_private; 4224 epipe = (struct ehci_pipe *) xfer->pipe; 4225 4226 KASSERT(mutex_owned(&sc->sc_lock)); 4227 4228 epipe->u.isoc.cur_xfers--; 4229 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(exfer)) { 4230 ehci_del_intr_list(sc, exfer); 4231 ehci_rem_free_itd_chain(sc, exfer); 4232 } 4233 4234 usb_syncmem(&xfer->dmabuf, 0, xfer->length, BUS_DMASYNC_POSTWRITE | 4235 BUS_DMASYNC_POSTREAD); 4236 4237 } 4238
Indexes created Mon Sep 22 10:09:38 GMT 2025