ehci.c revision 1.183.6.1
1 /* $NetBSD: ehci.c,v 1.183.6.1 2013/09/26 01:55:49 riz Exp $ */ 2 3 /* 4 * Copyright (c) 2004-2008 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 and 9 * Jeremy Morse (jeremy.morse (at) gmail.com). 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 35 * 36 * The EHCI 1.0 spec can be found at 37 * http://www.intel.com/technology/usb/spec.htm 38 * and the USB 2.0 spec at 39 * http://www.usb.org/developers/docs/ 40 * 41 */ 42 43 /* 44 * TODO: 45 * 1) hold off explorations by companion controllers until ehci has started. 46 * 47 * 2) The hub driver needs to handle and schedule the transaction translator, 48 * to assign place in frame where different devices get to go. See chapter 49 * on hubs in USB 2.0 for details. 50 * 51 * 3) Command failures are not recovered correctly. 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.183.6.1 2013/09/26 01:55:49 riz Exp $"); 56 57 #include "ohci.h" 58 #include "uhci.h" 59 #include "opt_usb.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/malloc.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 72 #include <machine/endian.h> 73 74 #include <dev/usb/usb.h> 75 #include <dev/usb/usbdi.h> 76 #include <dev/usb/usbdivar.h> 77 #include <dev/usb/usb_mem.h> 78 #include <dev/usb/usb_quirks.h> 79 80 #include <dev/usb/ehcireg.h> 81 #include <dev/usb/ehcivar.h> 82 #include <dev/usb/usbroothub_subr.h> 83 84 #ifdef EHCI_DEBUG 85 #define DPRINTF(x) do { if (ehcidebug) printf x; } while(0) 86 #define DPRINTFN(n,x) do { if (ehcidebug>(n)) printf x; } while (0) 87 int ehcidebug = 0; 88 #else 89 #define DPRINTF(x) 90 #define DPRINTFN(n,x) 91 #endif 92 93 struct ehci_pipe { 94 struct usbd_pipe pipe; 95 int nexttoggle; 96 97 ehci_soft_qh_t *sqh; 98 union { 99 ehci_soft_qtd_t *qtd; 100 /* ehci_soft_itd_t *itd; */ 101 } tail; 102 union { 103 /* Control pipe */ 104 struct { 105 usb_dma_t reqdma; 106 u_int length; 107 } ctl; 108 /* Interrupt pipe */ 109 struct { 110 u_int length; 111 } intr; 112 /* Bulk pipe */ 113 struct { 114 u_int length; 115 } bulk; 116 /* Iso pipe */ 117 struct { 118 u_int next_frame; 119 u_int cur_xfers; 120 } isoc; 121 } u; 122 }; 123 124 Static usbd_status ehci_open(usbd_pipe_handle); 125 Static void ehci_poll(struct usbd_bus *); 126 Static void ehci_softintr(void *); 127 Static int ehci_intr1(ehci_softc_t *); 128 Static void ehci_waitintr(ehci_softc_t *, usbd_xfer_handle); 129 Static void ehci_check_intr(ehci_softc_t *, struct ehci_xfer *); 130 Static void ehci_check_qh_intr(ehci_softc_t *, struct ehci_xfer *); 131 Static void ehci_check_itd_intr(ehci_softc_t *, struct ehci_xfer *); 132 Static void ehci_idone(struct ehci_xfer *); 133 Static void ehci_timeout(void *); 134 Static void ehci_timeout_task(void *); 135 Static void ehci_intrlist_timeout(void *); 136 137 Static usbd_status ehci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t); 138 Static void ehci_freem(struct usbd_bus *, usb_dma_t *); 139 140 Static usbd_xfer_handle ehci_allocx(struct usbd_bus *); 141 Static void ehci_freex(struct usbd_bus *, usbd_xfer_handle); 142 143 Static usbd_status ehci_root_ctrl_transfer(usbd_xfer_handle); 144 Static usbd_status ehci_root_ctrl_start(usbd_xfer_handle); 145 Static void ehci_root_ctrl_abort(usbd_xfer_handle); 146 Static void ehci_root_ctrl_close(usbd_pipe_handle); 147 Static void ehci_root_ctrl_done(usbd_xfer_handle); 148 149 Static usbd_status ehci_root_intr_transfer(usbd_xfer_handle); 150 Static usbd_status ehci_root_intr_start(usbd_xfer_handle); 151 Static void ehci_root_intr_abort(usbd_xfer_handle); 152 Static void ehci_root_intr_close(usbd_pipe_handle); 153 Static void ehci_root_intr_done(usbd_xfer_handle); 154 155 Static usbd_status ehci_device_ctrl_transfer(usbd_xfer_handle); 156 Static usbd_status ehci_device_ctrl_start(usbd_xfer_handle); 157 Static void ehci_device_ctrl_abort(usbd_xfer_handle); 158 Static void ehci_device_ctrl_close(usbd_pipe_handle); 159 Static void ehci_device_ctrl_done(usbd_xfer_handle); 160 161 Static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle); 162 Static usbd_status ehci_device_bulk_start(usbd_xfer_handle); 163 Static void ehci_device_bulk_abort(usbd_xfer_handle); 164 Static void ehci_device_bulk_close(usbd_pipe_handle); 165 Static void ehci_device_bulk_done(usbd_xfer_handle); 166 167 Static usbd_status ehci_device_intr_transfer(usbd_xfer_handle); 168 Static usbd_status ehci_device_intr_start(usbd_xfer_handle); 169 Static void ehci_device_intr_abort(usbd_xfer_handle); 170 Static void ehci_device_intr_close(usbd_pipe_handle); 171 Static void ehci_device_intr_done(usbd_xfer_handle); 172 173 Static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle); 174 Static usbd_status ehci_device_isoc_start(usbd_xfer_handle); 175 Static void ehci_device_isoc_abort(usbd_xfer_handle); 176 Static void ehci_device_isoc_close(usbd_pipe_handle); 177 Static void ehci_device_isoc_done(usbd_xfer_handle); 178 179 Static void ehci_device_clear_toggle(usbd_pipe_handle pipe); 180 Static void ehci_noop(usbd_pipe_handle pipe); 181 182 Static void ehci_pcd(ehci_softc_t *, usbd_xfer_handle); 183 Static void ehci_disown(ehci_softc_t *, int, int); 184 185 Static ehci_soft_qh_t *ehci_alloc_sqh(ehci_softc_t *); 186 Static void ehci_free_sqh(ehci_softc_t *, ehci_soft_qh_t *); 187 188 Static ehci_soft_qtd_t *ehci_alloc_sqtd(ehci_softc_t *); 189 Static void ehci_free_sqtd(ehci_softc_t *, ehci_soft_qtd_t *); 190 Static usbd_status ehci_alloc_sqtd_chain(struct ehci_pipe *, 191 ehci_softc_t *, int, int, usbd_xfer_handle, 192 ehci_soft_qtd_t **, ehci_soft_qtd_t **); 193 Static void ehci_free_sqtd_chain(ehci_softc_t *, ehci_soft_qtd_t *, 194 ehci_soft_qtd_t *); 195 196 Static ehci_soft_itd_t *ehci_alloc_itd(ehci_softc_t *sc); 197 Static void ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd); 198 Static void ehci_rem_free_itd_chain(ehci_softc_t *sc, 199 struct ehci_xfer *exfer); 200 Static void ehci_abort_isoc_xfer(usbd_xfer_handle xfer, 201 usbd_status status); 202 203 Static usbd_status ehci_device_request(usbd_xfer_handle xfer); 204 205 Static usbd_status ehci_device_setintr(ehci_softc_t *, ehci_soft_qh_t *, 206 int ival); 207 208 Static void ehci_add_qh(ehci_soft_qh_t *, ehci_soft_qh_t *); 209 Static void ehci_rem_qh(ehci_softc_t *, ehci_soft_qh_t *, 210 ehci_soft_qh_t *); 211 Static void ehci_set_qh_qtd(ehci_soft_qh_t *, ehci_soft_qtd_t *); 212 Static void ehci_sync_hc(ehci_softc_t *); 213 214 Static void ehci_close_pipe(usbd_pipe_handle, ehci_soft_qh_t *); 215 Static void ehci_abort_xfer(usbd_xfer_handle, usbd_status); 216 217 #ifdef EHCI_DEBUG 218 Static void ehci_dump_regs(ehci_softc_t *); 219 void ehci_dump(void); 220 Static ehci_softc_t *theehci; 221 Static void ehci_dump_link(ehci_link_t, int); 222 Static void ehci_dump_sqtds(ehci_soft_qtd_t *); 223 Static void ehci_dump_sqtd(ehci_soft_qtd_t *); 224 Static void ehci_dump_qtd(ehci_qtd_t *); 225 Static void ehci_dump_sqh(ehci_soft_qh_t *); 226 #if notyet 227 Static void ehci_dump_sitd(struct ehci_soft_itd *itd); 228 Static void ehci_dump_itd(struct ehci_soft_itd *); 229 #endif 230 #ifdef DIAGNOSTIC 231 Static void ehci_dump_exfer(struct ehci_xfer *); 232 #endif 233 #endif 234 235 #define EHCI_NULL htole32(EHCI_LINK_TERMINATE) 236 237 #define EHCI_INTR_ENDPT 1 238 239 #define ehci_add_intr_list(sc, ex) \ 240 TAILQ_INSERT_TAIL(&(sc)->sc_intrhead, (ex), inext); 241 #define ehci_del_intr_list(sc, ex) \ 242 do { \ 243 TAILQ_REMOVE(&sc->sc_intrhead, (ex), inext); \ 244 (ex)->inext.tqe_prev = NULL; \ 245 } while (0) 246 #define ehci_active_intr_list(ex) ((ex)->inext.tqe_prev != NULL) 247 248 Static const struct usbd_bus_methods ehci_bus_methods = { 249 ehci_open, 250 ehci_softintr, 251 ehci_poll, 252 ehci_allocm, 253 ehci_freem, 254 ehci_allocx, 255 ehci_freex, 256 }; 257 258 Static const struct usbd_pipe_methods ehci_root_ctrl_methods = { 259 ehci_root_ctrl_transfer, 260 ehci_root_ctrl_start, 261 ehci_root_ctrl_abort, 262 ehci_root_ctrl_close, 263 ehci_noop, 264 ehci_root_ctrl_done, 265 }; 266 267 Static const struct usbd_pipe_methods ehci_root_intr_methods = { 268 ehci_root_intr_transfer, 269 ehci_root_intr_start, 270 ehci_root_intr_abort, 271 ehci_root_intr_close, 272 ehci_noop, 273 ehci_root_intr_done, 274 }; 275 276 Static const struct usbd_pipe_methods ehci_device_ctrl_methods = { 277 ehci_device_ctrl_transfer, 278 ehci_device_ctrl_start, 279 ehci_device_ctrl_abort, 280 ehci_device_ctrl_close, 281 ehci_noop, 282 ehci_device_ctrl_done, 283 }; 284 285 Static const struct usbd_pipe_methods ehci_device_intr_methods = { 286 ehci_device_intr_transfer, 287 ehci_device_intr_start, 288 ehci_device_intr_abort, 289 ehci_device_intr_close, 290 ehci_device_clear_toggle, 291 ehci_device_intr_done, 292 }; 293 294 Static const struct usbd_pipe_methods ehci_device_bulk_methods = { 295 ehci_device_bulk_transfer, 296 ehci_device_bulk_start, 297 ehci_device_bulk_abort, 298 ehci_device_bulk_close, 299 ehci_device_clear_toggle, 300 ehci_device_bulk_done, 301 }; 302 303 Static const struct usbd_pipe_methods ehci_device_isoc_methods = { 304 ehci_device_isoc_transfer, 305 ehci_device_isoc_start, 306 ehci_device_isoc_abort, 307 ehci_device_isoc_close, 308 ehci_noop, 309 ehci_device_isoc_done, 310 }; 311 312 static const uint8_t revbits[EHCI_MAX_POLLRATE] = { 313 0x00,0x40,0x20,0x60,0x10,0x50,0x30,0x70,0x08,0x48,0x28,0x68,0x18,0x58,0x38,0x78, 314 0x04,0x44,0x24,0x64,0x14,0x54,0x34,0x74,0x0c,0x4c,0x2c,0x6c,0x1c,0x5c,0x3c,0x7c, 315 0x02,0x42,0x22,0x62,0x12,0x52,0x32,0x72,0x0a,0x4a,0x2a,0x6a,0x1a,0x5a,0x3a,0x7a, 316 0x06,0x46,0x26,0x66,0x16,0x56,0x36,0x76,0x0e,0x4e,0x2e,0x6e,0x1e,0x5e,0x3e,0x7e, 317 0x01,0x41,0x21,0x61,0x11,0x51,0x31,0x71,0x09,0x49,0x29,0x69,0x19,0x59,0x39,0x79, 318 0x05,0x45,0x25,0x65,0x15,0x55,0x35,0x75,0x0d,0x4d,0x2d,0x6d,0x1d,0x5d,0x3d,0x7d, 319 0x03,0x43,0x23,0x63,0x13,0x53,0x33,0x73,0x0b,0x4b,0x2b,0x6b,0x1b,0x5b,0x3b,0x7b, 320 0x07,0x47,0x27,0x67,0x17,0x57,0x37,0x77,0x0f,0x4f,0x2f,0x6f,0x1f,0x5f,0x3f,0x7f, 321 }; 322 323 usbd_status 324 ehci_init(ehci_softc_t *sc) 325 { 326 u_int32_t vers, sparams, cparams, hcr; 327 u_int i; 328 usbd_status err; 329 ehci_soft_qh_t *sqh; 330 u_int ncomp; 331 332 DPRINTF(("ehci_init: start\n")); 333 #ifdef EHCI_DEBUG 334 theehci = sc; 335 #endif 336 337 sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); 338 339 vers = EREAD2(sc, EHCI_HCIVERSION); 340 aprint_verbose("%s: EHCI version %x.%x\n", device_xname(sc->sc_dev), 341 vers >> 8, vers & 0xff); 342 343 sparams = EREAD4(sc, EHCI_HCSPARAMS); 344 DPRINTF(("ehci_init: sparams=0x%x\n", sparams)); 345 sc->sc_npcomp = EHCI_HCS_N_PCC(sparams); 346 ncomp = EHCI_HCS_N_CC(sparams); 347 if (ncomp != sc->sc_ncomp) { 348 aprint_verbose("%s: wrong number of companions (%d != %d)\n", 349 device_xname(sc->sc_dev), ncomp, sc->sc_ncomp); 350 #if NOHCI == 0 || NUHCI == 0 351 aprint_error("%s: ohci or uhci probably not configured\n", 352 device_xname(sc->sc_dev)); 353 #endif 354 if (ncomp < sc->sc_ncomp) 355 sc->sc_ncomp = ncomp; 356 } 357 if (sc->sc_ncomp > 0) { 358 KASSERT(!(sc->sc_flags & EHCIF_ETTF)); 359 aprint_normal("%s: companion controller%s, %d port%s each:", 360 device_xname(sc->sc_dev), sc->sc_ncomp!=1 ? "s" : "", 361 EHCI_HCS_N_PCC(sparams), 362 EHCI_HCS_N_PCC(sparams)!=1 ? "s" : ""); 363 for (i = 0; i < sc->sc_ncomp; i++) 364 aprint_normal(" %s", device_xname(sc->sc_comps[i])); 365 aprint_normal("\n"); 366 } 367 sc->sc_noport = EHCI_HCS_N_PORTS(sparams); 368 cparams = EREAD4(sc, EHCI_HCCPARAMS); 369 DPRINTF(("ehci_init: cparams=0x%x\n", cparams)); 370 sc->sc_hasppc = EHCI_HCS_PPC(sparams); 371 372 if (EHCI_HCC_64BIT(cparams)) { 373 /* MUST clear segment register if 64 bit capable. */ 374 EWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); 375 } 376 377 sc->sc_bus.usbrev = USBREV_2_0; 378 379 usb_setup_reserve(sc->sc_dev, &sc->sc_dma_reserve, sc->sc_bus.dmatag, 380 USB_MEM_RESERVE); 381 382 /* Reset the controller */ 383 DPRINTF(("%s: resetting\n", device_xname(sc->sc_dev))); 384 EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ 385 usb_delay_ms(&sc->sc_bus, 1); 386 EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); 387 for (i = 0; i < 100; i++) { 388 usb_delay_ms(&sc->sc_bus, 1); 389 hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET; 390 if (!hcr) 391 break; 392 } 393 if (hcr) { 394 aprint_error("%s: reset timeout\n", device_xname(sc->sc_dev)); 395 return (USBD_IOERROR); 396 } 397 if (sc->sc_vendor_init) 398 sc->sc_vendor_init(sc); 399 400 /* 401 * If we are doing embedded transaction translation function, force 402 * the controller to host mode. 403 */ 404 if (sc->sc_flags & EHCIF_ETTF) { 405 uint32_t usbmode = EREAD4(sc, EHCI_USBMODE); 406 usbmode &= ~EHCI_USBMODE_CM; 407 usbmode |= EHCI_USBMODE_CM_HOST; 408 EWRITE4(sc, EHCI_USBMODE, usbmode); 409 } 410 411 /* XXX need proper intr scheduling */ 412 sc->sc_rand = 96; 413 414 /* frame list size at default, read back what we got and use that */ 415 switch (EHCI_CMD_FLS(EOREAD4(sc, EHCI_USBCMD))) { 416 case 0: sc->sc_flsize = 1024; break; 417 case 1: sc->sc_flsize = 512; break; 418 case 2: sc->sc_flsize = 256; break; 419 case 3: return (USBD_IOERROR); 420 } 421 err = usb_allocmem(&sc->sc_bus, sc->sc_flsize * sizeof(ehci_link_t), 422 EHCI_FLALIGN_ALIGN, &sc->sc_fldma); 423 if (err) 424 return (err); 425 DPRINTF(("%s: flsize=%d\n", device_xname(sc->sc_dev),sc->sc_flsize)); 426 sc->sc_flist = KERNADDR(&sc->sc_fldma, 0); 427 428 for (i = 0; i < sc->sc_flsize; i++) { 429 sc->sc_flist[i] = EHCI_NULL; 430 } 431 432 EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); 433 434 sc->sc_softitds = malloc(sc->sc_flsize * sizeof(ehci_soft_itd_t *), 435 M_USB, M_NOWAIT | M_ZERO); 436 if (sc->sc_softitds == NULL) 437 return ENOMEM; 438 LIST_INIT(&sc->sc_freeitds); 439 TAILQ_INIT(&sc->sc_intrhead); 440 mutex_init(&sc->sc_intrhead_lock, MUTEX_DEFAULT, IPL_USB); 441 442 /* Set up the bus struct. */ 443 sc->sc_bus.methods = &ehci_bus_methods; 444 sc->sc_bus.pipe_size = sizeof(struct ehci_pipe); 445 446 sc->sc_eintrs = EHCI_NORMAL_INTRS; 447 448 /* 449 * Allocate the interrupt dummy QHs. These are arranged to give poll 450 * intervals that are powers of 2 times 1ms. 451 */ 452 for (i = 0; i < EHCI_INTRQHS; i++) { 453 sqh = ehci_alloc_sqh(sc); 454 if (sqh == NULL) { 455 err = USBD_NOMEM; 456 goto bad1; 457 } 458 sc->sc_islots[i].sqh = sqh; 459 } 460 for (i = 0; i < EHCI_INTRQHS; i++) { 461 sqh = sc->sc_islots[i].sqh; 462 if (i == 0) { 463 /* The last (1ms) QH terminates. */ 464 sqh->qh.qh_link = EHCI_NULL; 465 sqh->next = NULL; 466 } else { 467 /* Otherwise the next QH has half the poll interval */ 468 sqh->next = sc->sc_islots[(i + 1) / 2 - 1].sqh; 469 sqh->qh.qh_link = htole32(sqh->next->physaddr | 470 EHCI_LINK_QH); 471 } 472 sqh->qh.qh_endp = htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH)); 473 sqh->qh.qh_curqtd = EHCI_NULL; 474 sqh->next = NULL; 475 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 476 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 477 sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); 478 sqh->sqtd = NULL; 479 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 480 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 481 } 482 /* Point the frame list at the last level (128ms). */ 483 for (i = 0; i < sc->sc_flsize; i++) { 484 int j; 485 486 j = (i & ~(EHCI_MAX_POLLRATE-1)) | 487 revbits[i & (EHCI_MAX_POLLRATE-1)]; 488 sc->sc_flist[j] = htole32(EHCI_LINK_QH | 489 sc->sc_islots[EHCI_IQHIDX(EHCI_IPOLLRATES - 1, 490 i)].sqh->physaddr); 491 } 492 usb_syncmem(&sc->sc_fldma, 0, sc->sc_flsize * sizeof(ehci_link_t), 493 BUS_DMASYNC_PREWRITE); 494 495 /* Allocate dummy QH that starts the async list. */ 496 sqh = ehci_alloc_sqh(sc); 497 if (sqh == NULL) { 498 err = USBD_NOMEM; 499 goto bad1; 500 } 501 /* Fill the QH */ 502 sqh->qh.qh_endp = 503 htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL); 504 sqh->qh.qh_link = 505 htole32(sqh->physaddr | EHCI_LINK_QH); 506 sqh->qh.qh_curqtd = EHCI_NULL; 507 sqh->next = NULL; 508 /* Fill the overlay qTD */ 509 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 510 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 511 sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED); 512 sqh->sqtd = NULL; 513 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 514 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 515 #ifdef EHCI_DEBUG 516 if (ehcidebug) { 517 ehci_dump_sqh(sqh); 518 } 519 #endif 520 521 /* Point to async list */ 522 sc->sc_async_head = sqh; 523 EOWRITE4(sc, EHCI_ASYNCLISTADDR, sqh->physaddr | EHCI_LINK_QH); 524 525 callout_init(&(sc->sc_tmo_intrlist), 0); 526 527 mutex_init(&sc->sc_doorbell_lock, MUTEX_DEFAULT, IPL_NONE); 528 529 /* Turn on controller */ 530 EOWRITE4(sc, EHCI_USBCMD, 531 EHCI_CMD_ITC_2 | /* 2 microframes interrupt delay */ 532 (EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_FLS_M) | 533 EHCI_CMD_ASE | 534 EHCI_CMD_PSE | 535 EHCI_CMD_RS); 536 537 /* Take over port ownership */ 538 EOWRITE4(sc, EHCI_CONFIGFLAG, EHCI_CONF_CF); 539 540 for (i = 0; i < 100; i++) { 541 usb_delay_ms(&sc->sc_bus, 1); 542 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 543 if (!hcr) 544 break; 545 } 546 if (hcr) { 547 aprint_error("%s: run timeout\n", device_xname(sc->sc_dev)); 548 return (USBD_IOERROR); 549 } 550 551 /* Enable interrupts */ 552 DPRINTFN(1,("ehci_init: enabling\n")); 553 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 554 555 return (USBD_NORMAL_COMPLETION); 556 557 #if 0 558 bad2: 559 ehci_free_sqh(sc, sc->sc_async_head); 560 #endif 561 bad1: 562 usb_freemem(&sc->sc_bus, &sc->sc_fldma); 563 return (err); 564 } 565 566 int 567 ehci_intr(void *v) 568 { 569 ehci_softc_t *sc = v; 570 571 if (sc == NULL || sc->sc_dying || !device_has_power(sc->sc_dev)) 572 return (0); 573 574 /* If we get an interrupt while polling, then just ignore it. */ 575 if (sc->sc_bus.use_polling) { 576 u_int32_t intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 577 578 if (intrs) 579 EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ 580 #ifdef DIAGNOSTIC 581 DPRINTFN(16, ("ehci_intr: ignored interrupt while polling\n")); 582 #endif 583 return (0); 584 } 585 586 return (ehci_intr1(sc)); 587 } 588 589 Static int 590 ehci_intr1(ehci_softc_t *sc) 591 { 592 u_int32_t intrs, eintrs; 593 594 DPRINTFN(20,("ehci_intr1: enter\n")); 595 596 /* In case the interrupt occurs before initialization has completed. */ 597 if (sc == NULL) { 598 #ifdef DIAGNOSTIC 599 printf("ehci_intr1: sc == NULL\n"); 600 #endif 601 return (0); 602 } 603 604 intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 605 if (!intrs) 606 return (0); 607 608 eintrs = intrs & sc->sc_eintrs; 609 DPRINTFN(7, ("ehci_intr1: sc=%p intrs=0x%x(0x%x) eintrs=0x%x\n", 610 sc, (u_int)intrs, EOREAD4(sc, EHCI_USBSTS), 611 (u_int)eintrs)); 612 if (!eintrs) 613 return (0); 614 615 EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */ 616 sc->sc_bus.intr_context++; 617 sc->sc_bus.no_intrs++; 618 if (eintrs & EHCI_STS_IAA) { 619 DPRINTF(("ehci_intr1: door bell\n")); 620 wakeup(&sc->sc_async_head); 621 eintrs &= ~EHCI_STS_IAA; 622 } 623 if (eintrs & (EHCI_STS_INT | EHCI_STS_ERRINT)) { 624 DPRINTFN(5,("ehci_intr1: %s %s\n", 625 eintrs & EHCI_STS_INT ? "INT" : "", 626 eintrs & EHCI_STS_ERRINT ? "ERRINT" : "")); 627 usb_schedsoftintr(&sc->sc_bus); 628 eintrs &= ~(EHCI_STS_INT | EHCI_STS_ERRINT); 629 } 630 if (eintrs & EHCI_STS_HSE) { 631 printf("%s: unrecoverable error, controller halted\n", 632 device_xname(sc->sc_dev)); 633 /* XXX what else */ 634 } 635 if (eintrs & EHCI_STS_PCD) { 636 ehci_pcd(sc, sc->sc_intrxfer); 637 eintrs &= ~EHCI_STS_PCD; 638 } 639 640 sc->sc_bus.intr_context--; 641 642 if (eintrs != 0) { 643 /* Block unprocessed interrupts. */ 644 sc->sc_eintrs &= ~eintrs; 645 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 646 printf("%s: blocking intrs 0x%x\n", 647 device_xname(sc->sc_dev), eintrs); 648 } 649 650 return (1); 651 } 652 653 654 Static void 655 ehci_pcd(ehci_softc_t *sc, usbd_xfer_handle xfer) 656 { 657 usbd_pipe_handle pipe; 658 u_char *p; 659 int i, m; 660 661 if (xfer == NULL) { 662 /* Just ignore the change. */ 663 return; 664 } 665 666 pipe = xfer->pipe; 667 668 p = KERNADDR(&xfer->dmabuf, 0); 669 m = min(sc->sc_noport, xfer->length * 8 - 1); 670 memset(p, 0, xfer->length); 671 for (i = 1; i <= m; i++) { 672 /* Pick out CHANGE bits from the status reg. */ 673 if (EOREAD4(sc, EHCI_PORTSC(i)) & EHCI_PS_CLEAR) 674 p[i/8] |= 1 << (i%8); 675 } 676 DPRINTF(("ehci_pcd: change=0x%02x\n", *p)); 677 xfer->actlen = xfer->length; 678 xfer->status = USBD_NORMAL_COMPLETION; 679 680 usb_transfer_complete(xfer); 681 } 682 683 Static void 684 ehci_softintr(void *v) 685 { 686 struct usbd_bus *bus = v; 687 ehci_softc_t *sc = bus->hci_private; 688 struct ehci_xfer *ex, *nextex; 689 690 DPRINTFN(10,("%s: ehci_softintr (%d)\n", device_xname(sc->sc_dev), 691 sc->sc_bus.intr_context)); 692 693 sc->sc_bus.intr_context++; 694 695 /* 696 * The only explanation I can think of for why EHCI is as brain dead 697 * as UHCI interrupt-wise is that Intel was involved in both. 698 * An interrupt just tells us that something is done, we have no 699 * clue what, so we need to scan through all active transfers. :-( 700 */ 701 for (ex = TAILQ_FIRST(&sc->sc_intrhead); ex; ex = nextex) { 702 nextex = TAILQ_NEXT(ex, inext); 703 ehci_check_intr(sc, ex); 704 } 705 706 /* Schedule a callout to catch any dropped transactions. */ 707 if ((sc->sc_flags & EHCIF_DROPPED_INTR_WORKAROUND) && 708 !TAILQ_EMPTY(&sc->sc_intrhead)) 709 callout_reset(&(sc->sc_tmo_intrlist), 710 (hz), (ehci_intrlist_timeout), (sc)); 711 712 #ifdef USB_USE_SOFTINTR 713 if (sc->sc_softwake) { 714 sc->sc_softwake = 0; 715 wakeup(&sc->sc_softwake); 716 } 717 #endif /* USB_USE_SOFTINTR */ 718 719 sc->sc_bus.intr_context--; 720 } 721 722 /* Check for an interrupt. */ 723 Static void 724 ehci_check_intr(ehci_softc_t *sc, struct ehci_xfer *ex) 725 { 726 int attr; 727 728 DPRINTFN(/*15*/2, ("ehci_check_intr: ex=%p\n", ex)); 729 730 attr = ex->xfer.pipe->endpoint->edesc->bmAttributes; 731 if (UE_GET_XFERTYPE(attr) == UE_ISOCHRONOUS) 732 ehci_check_itd_intr(sc, ex); 733 else 734 ehci_check_qh_intr(sc, ex); 735 736 return; 737 } 738 739 Static void 740 ehci_check_qh_intr(ehci_softc_t *sc, struct ehci_xfer *ex) 741 { 742 ehci_soft_qtd_t *sqtd, *lsqtd; 743 __uint32_t status; 744 745 if (ex->sqtdstart == NULL) { 746 printf("ehci_check_qh_intr: not valid sqtd\n"); 747 return; 748 } 749 750 lsqtd = ex->sqtdend; 751 #ifdef DIAGNOSTIC 752 if (lsqtd == NULL) { 753 printf("ehci_check_qh_intr: lsqtd==0\n"); 754 return; 755 } 756 #endif 757 /* 758 * If the last TD is still active we need to check whether there 759 * is a an error somewhere in the middle, or whether there was a 760 * short packet (SPD and not ACTIVE). 761 */ 762 usb_syncmem(&lsqtd->dma, 763 lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), 764 sizeof(lsqtd->qtd.qtd_status), 765 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 766 status = le32toh(lsqtd->qtd.qtd_status); 767 usb_syncmem(&lsqtd->dma, 768 lsqtd->offs + offsetof(ehci_qtd_t, qtd_status), 769 sizeof(lsqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); 770 if (status & EHCI_QTD_ACTIVE) { 771 DPRINTFN(12, ("ehci_check_intr: active ex=%p\n", ex)); 772 for (sqtd = ex->sqtdstart; sqtd != lsqtd; sqtd=sqtd->nextqtd) { 773 usb_syncmem(&sqtd->dma, 774 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 775 sizeof(sqtd->qtd.qtd_status), 776 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 777 status = le32toh(sqtd->qtd.qtd_status); 778 usb_syncmem(&sqtd->dma, 779 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 780 sizeof(sqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD); 781 /* If there's an active QTD the xfer isn't done. */ 782 if (status & EHCI_QTD_ACTIVE) 783 break; 784 /* Any kind of error makes the xfer done. */ 785 if (status & EHCI_QTD_HALTED) 786 goto done; 787 /* We want short packets, and it is short: it's done */ 788 if (EHCI_QTD_GET_BYTES(status) != 0) 789 goto done; 790 } 791 DPRINTFN(12, ("ehci_check_intr: ex=%p std=%p still active\n", 792 ex, ex->sqtdstart)); 793 return; 794 } 795 done: 796 DPRINTFN(12, ("ehci_check_intr: ex=%p done\n", ex)); 797 callout_stop(&ex->xfer.timeout_handle); 798 ehci_idone(ex); 799 } 800 801 Static void 802 ehci_check_itd_intr(ehci_softc_t *sc, struct ehci_xfer *ex) { 803 ehci_soft_itd_t *itd; 804 int i; 805 806 if (&ex->xfer != SIMPLEQ_FIRST(&ex->xfer.pipe->queue)) 807 return; 808 809 if (ex->itdstart == NULL) { 810 printf("ehci_check_itd_intr: not valid itd\n"); 811 return; 812 } 813 814 itd = ex->itdend; 815 #ifdef DIAGNOSTIC 816 if (itd == NULL) { 817 printf("ehci_check_itd_intr: itdend == 0\n"); 818 return; 819 } 820 #endif 821 822 /* 823 * check no active transfers in last itd, meaning we're finished 824 */ 825 826 usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_ctl), 827 sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | 828 BUS_DMASYNC_POSTREAD); 829 830 for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { 831 if (le32toh(itd->itd.itd_ctl[i]) & EHCI_ITD_ACTIVE) 832 break; 833 } 834 835 if (i == EHCI_ITD_NUFRAMES) { 836 goto done; /* All 8 descriptors inactive, it's done */ 837 } 838 839 DPRINTFN(12, ("ehci_check_itd_intr: ex %p itd %p still active\n", ex, 840 ex->itdstart)); 841 return; 842 done: 843 DPRINTFN(12, ("ehci_check_itd_intr: ex=%p done\n", ex)); 844 callout_stop(&ex->xfer.timeout_handle); 845 ehci_idone(ex); 846 } 847 848 Static void 849 ehci_idone(struct ehci_xfer *ex) 850 { 851 usbd_xfer_handle xfer = &ex->xfer; 852 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 853 ehci_soft_qtd_t *sqtd, *lsqtd; 854 u_int32_t status = 0, nstatus = 0; 855 int actlen; 856 857 DPRINTFN(/*12*/2, ("ehci_idone: ex=%p\n", ex)); 858 #ifdef DIAGNOSTIC 859 { 860 int s = splhigh(); 861 if (ex->isdone) { 862 splx(s); 863 #ifdef EHCI_DEBUG 864 printf("ehci_idone: ex is done!\n "); 865 ehci_dump_exfer(ex); 866 #else 867 printf("ehci_idone: ex=%p is done!\n", ex); 868 #endif 869 return; 870 } 871 ex->isdone = 1; 872 splx(s); 873 } 874 #endif 875 if (xfer->status == USBD_CANCELLED || 876 xfer->status == USBD_TIMEOUT) { 877 DPRINTF(("ehci_idone: aborted xfer=%p\n", xfer)); 878 return; 879 } 880 881 #ifdef EHCI_DEBUG 882 DPRINTFN(/*10*/2, ("ehci_idone: xfer=%p, pipe=%p ready\n", xfer, epipe)); 883 if (ehcidebug > 10) 884 ehci_dump_sqtds(ex->sqtdstart); 885 #endif 886 887 /* The transfer is done, compute actual length and status. */ 888 889 if (UE_GET_XFERTYPE(xfer->pipe->endpoint->edesc->bmAttributes) 890 == UE_ISOCHRONOUS) { 891 /* Isoc transfer */ 892 struct ehci_soft_itd *itd; 893 int i, nframes, len, uframes; 894 895 nframes = 0; 896 actlen = 0; 897 898 i = xfer->pipe->endpoint->edesc->bInterval; 899 uframes = min(1 << (i - 1), USB_UFRAMES_PER_FRAME); 900 901 for (itd = ex->itdstart; itd != NULL; itd = itd->xfer_next) { 902 usb_syncmem(&itd->dma,itd->offs + offsetof(ehci_itd_t,itd_ctl), 903 sizeof(itd->itd.itd_ctl), BUS_DMASYNC_POSTWRITE | 904 BUS_DMASYNC_POSTREAD); 905 906 for (i = 0; i < EHCI_ITD_NUFRAMES; i += uframes) { 907 /* XXX - driver didn't fill in the frame full 908 * of uframes. This leads to scheduling 909 * inefficiencies, but working around 910 * this doubles complexity of tracking 911 * an xfer. 912 */ 913 if (nframes >= xfer->nframes) 914 break; 915 916 status = le32toh(itd->itd.itd_ctl[i]); 917 len = EHCI_ITD_GET_LEN(status); 918 if (EHCI_ITD_GET_STATUS(status) != 0) 919 len = 0; /*No valid data on error*/ 920 921 xfer->frlengths[nframes++] = len; 922 actlen += len; 923 } 924 925 if (nframes >= xfer->nframes) 926 break; 927 } 928 929 xfer->actlen = actlen; 930 xfer->status = USBD_NORMAL_COMPLETION; 931 goto end; 932 } 933 934 /* Continue processing xfers using queue heads */ 935 936 lsqtd = ex->sqtdend; 937 actlen = 0; 938 for (sqtd = ex->sqtdstart; sqtd != lsqtd->nextqtd; sqtd = sqtd->nextqtd) { 939 usb_syncmem(&sqtd->dma, sqtd->offs, sizeof(sqtd->qtd), 940 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 941 nstatus = le32toh(sqtd->qtd.qtd_status); 942 if (nstatus & EHCI_QTD_ACTIVE) 943 break; 944 945 status = nstatus; 946 if (EHCI_QTD_GET_PID(status) != EHCI_QTD_PID_SETUP) 947 actlen += sqtd->len - EHCI_QTD_GET_BYTES(status); 948 } 949 950 951 /* 952 * If there are left over TDs we need to update the toggle. 953 * The default pipe doesn't need it since control transfers 954 * start the toggle at 0 every time. 955 * For a short transfer we need to update the toggle for the missing 956 * packets within the qTD. 957 */ 958 if ((sqtd != lsqtd->nextqtd || EHCI_QTD_GET_BYTES(status)) && 959 xfer->pipe->device->default_pipe != xfer->pipe) { 960 DPRINTFN(2, ("ehci_idone: need toggle update " 961 "status=%08x nstatus=%08x\n", status, nstatus)); 962 #if 0 963 ehci_dump_sqh(epipe->sqh); 964 ehci_dump_sqtds(ex->sqtdstart); 965 #endif 966 epipe->nexttoggle = EHCI_QTD_GET_TOGGLE(nstatus); 967 } 968 969 DPRINTFN(/*10*/2, ("ehci_idone: len=%d, actlen=%d, status=0x%x\n", 970 xfer->length, actlen, status)); 971 xfer->actlen = actlen; 972 if (status & EHCI_QTD_HALTED) { 973 #ifdef EHCI_DEBUG 974 char sbuf[128]; 975 976 snprintb(sbuf, sizeof(sbuf), 977 "\20\7HALTED\6BUFERR\5BABBLE\4XACTERR\3MISSED\1PINGSTATE", 978 (u_int32_t)status); 979 980 DPRINTFN(2, ("ehci_idone: error, addr=%d, endpt=0x%02x, " 981 "status 0x%s\n", 982 xfer->pipe->device->address, 983 xfer->pipe->endpoint->edesc->bEndpointAddress, 984 sbuf)); 985 if (ehcidebug > 2) { 986 ehci_dump_sqh(epipe->sqh); 987 ehci_dump_sqtds(ex->sqtdstart); 988 } 989 #endif 990 /* low&full speed has an extra error flag */ 991 if (EHCI_QH_GET_EPS(epipe->sqh->qh.qh_endp) != 992 EHCI_QH_SPEED_HIGH) 993 status &= EHCI_QTD_STATERRS | EHCI_QTD_PINGSTATE; 994 else 995 status &= EHCI_QTD_STATERRS; 996 if (status == 0) /* no other errors means a stall */ { 997 xfer->status = USBD_STALLED; 998 } else { 999 xfer->status = USBD_IOERROR; /* more info XXX */ 1000 } 1001 /* XXX need to reset TT on missed microframe */ 1002 if (status & EHCI_QTD_MISSEDMICRO) { 1003 ehci_softc_t *sc = 1004 xfer->pipe->device->bus->hci_private; 1005 1006 printf("%s: missed microframe, TT reset not " 1007 "implemented, hub might be inoperational\n", 1008 device_xname(sc->sc_dev)); 1009 } 1010 } else { 1011 xfer->status = USBD_NORMAL_COMPLETION; 1012 } 1013 1014 end: 1015 /* XXX transfer_complete memcpys out transfer data (for in endpoints) 1016 * during this call, before methods->done is called: dma sync required 1017 * beforehand? */ 1018 usb_transfer_complete(xfer); 1019 DPRINTFN(/*12*/2, ("ehci_idone: ex=%p done\n", ex)); 1020 } 1021 1022 /* 1023 * Wait here until controller claims to have an interrupt. 1024 * Then call ehci_intr and return. Use timeout to avoid waiting 1025 * too long. 1026 */ 1027 Static void 1028 ehci_waitintr(ehci_softc_t *sc, usbd_xfer_handle xfer) 1029 { 1030 int timo; 1031 u_int32_t intrs; 1032 1033 xfer->status = USBD_IN_PROGRESS; 1034 for (timo = xfer->timeout; timo >= 0; timo--) { 1035 usb_delay_ms(&sc->sc_bus, 1); 1036 if (sc->sc_dying) 1037 break; 1038 intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)) & 1039 sc->sc_eintrs; 1040 DPRINTFN(15,("ehci_waitintr: 0x%04x\n", intrs)); 1041 #ifdef EHCI_DEBUG 1042 if (ehcidebug > 15) 1043 ehci_dump_regs(sc); 1044 #endif 1045 if (intrs) { 1046 ehci_intr1(sc); 1047 if (xfer->status != USBD_IN_PROGRESS) 1048 return; 1049 } 1050 } 1051 1052 /* Timeout */ 1053 DPRINTF(("ehci_waitintr: timeout\n")); 1054 xfer->status = USBD_TIMEOUT; 1055 usb_transfer_complete(xfer); 1056 /* XXX should free TD */ 1057 } 1058 1059 Static void 1060 ehci_poll(struct usbd_bus *bus) 1061 { 1062 ehci_softc_t *sc = bus->hci_private; 1063 #ifdef EHCI_DEBUG 1064 static int last; 1065 int new; 1066 new = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)); 1067 if (new != last) { 1068 DPRINTFN(10,("ehci_poll: intrs=0x%04x\n", new)); 1069 last = new; 1070 } 1071 #endif 1072 1073 if (EOREAD4(sc, EHCI_USBSTS) & sc->sc_eintrs) 1074 ehci_intr1(sc); 1075 } 1076 1077 void 1078 ehci_childdet(device_t self, device_t child) 1079 { 1080 struct ehci_softc *sc = device_private(self); 1081 1082 KASSERT(sc->sc_child == child); 1083 sc->sc_child = NULL; 1084 } 1085 1086 int 1087 ehci_detach(struct ehci_softc *sc, int flags) 1088 { 1089 int rv = 0; 1090 1091 if (sc->sc_child != NULL) 1092 rv = config_detach(sc->sc_child, flags); 1093 1094 if (rv != 0) 1095 return (rv); 1096 1097 callout_stop(&sc->sc_tmo_intrlist); 1098 1099 usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */ 1100 1101 /* XXX free other data structures XXX */ 1102 mutex_destroy(&sc->sc_doorbell_lock); 1103 mutex_destroy(&sc->sc_intrhead_lock); 1104 1105 EOWRITE4(sc, EHCI_CONFIGFLAG, 0); 1106 1107 return (rv); 1108 } 1109 1110 1111 int 1112 ehci_activate(device_t self, enum devact act) 1113 { 1114 struct ehci_softc *sc = device_private(self); 1115 1116 switch (act) { 1117 case DVACT_DEACTIVATE: 1118 sc->sc_dying = 1; 1119 return 0; 1120 default: 1121 return EOPNOTSUPP; 1122 } 1123 } 1124 1125 /* 1126 * Handle suspend/resume. 1127 * 1128 * We need to switch to polling mode here, because this routine is 1129 * called from an interrupt context. This is all right since we 1130 * are almost suspended anyway. 1131 * 1132 * Note that this power handler isn't to be registered directly; the 1133 * bus glue needs to call out to it. 1134 */ 1135 bool 1136 ehci_suspend(device_t dv, const pmf_qual_t *qual) 1137 { 1138 ehci_softc_t *sc = device_private(dv); 1139 int i, s; 1140 uint32_t cmd, hcr; 1141 1142 s = splhardusb(); 1143 1144 sc->sc_bus.use_polling++; 1145 1146 for (i = 1; i <= sc->sc_noport; i++) { 1147 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1148 if ((cmd & EHCI_PS_PO) == 0 && (cmd & EHCI_PS_PE) == EHCI_PS_PE) 1149 EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_SUSP); 1150 } 1151 1152 sc->sc_cmd = EOREAD4(sc, EHCI_USBCMD); 1153 1154 cmd = sc->sc_cmd & ~(EHCI_CMD_ASE | EHCI_CMD_PSE); 1155 EOWRITE4(sc, EHCI_USBCMD, cmd); 1156 1157 for (i = 0; i < 100; i++) { 1158 hcr = EOREAD4(sc, EHCI_USBSTS) & (EHCI_STS_ASS | EHCI_STS_PSS); 1159 if (hcr == 0) 1160 break; 1161 1162 usb_delay_ms(&sc->sc_bus, 1); 1163 } 1164 if (hcr != 0) 1165 printf("%s: reset timeout\n", device_xname(dv)); 1166 1167 cmd &= ~EHCI_CMD_RS; 1168 EOWRITE4(sc, EHCI_USBCMD, cmd); 1169 1170 for (i = 0; i < 100; i++) { 1171 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 1172 if (hcr == EHCI_STS_HCH) 1173 break; 1174 1175 usb_delay_ms(&sc->sc_bus, 1); 1176 } 1177 if (hcr != EHCI_STS_HCH) 1178 printf("%s: config timeout\n", device_xname(dv)); 1179 1180 sc->sc_bus.use_polling--; 1181 splx(s); 1182 1183 return true; 1184 } 1185 1186 bool 1187 ehci_resume(device_t dv, const pmf_qual_t *qual) 1188 { 1189 ehci_softc_t *sc = device_private(dv); 1190 int i; 1191 uint32_t cmd, hcr; 1192 1193 /* restore things in case the bios sucks */ 1194 EOWRITE4(sc, EHCI_CTRLDSSEGMENT, 0); 1195 EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0)); 1196 EOWRITE4(sc, EHCI_ASYNCLISTADDR, 1197 sc->sc_async_head->physaddr | EHCI_LINK_QH); 1198 1199 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs & ~EHCI_INTR_PCIE); 1200 1201 EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); 1202 1203 hcr = 0; 1204 for (i = 1; i <= sc->sc_noport; i++) { 1205 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1206 if ((cmd & EHCI_PS_PO) == 0 && 1207 (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) { 1208 EOWRITE4(sc, EHCI_PORTSC(i), cmd | EHCI_PS_FPR); 1209 hcr = 1; 1210 } 1211 } 1212 1213 if (hcr) { 1214 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT); 1215 1216 for (i = 1; i <= sc->sc_noport; i++) { 1217 cmd = EOREAD4(sc, EHCI_PORTSC(i)) & ~EHCI_PS_CLEAR; 1218 if ((cmd & EHCI_PS_PO) == 0 && 1219 (cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) 1220 EOWRITE4(sc, EHCI_PORTSC(i), 1221 cmd & ~EHCI_PS_FPR); 1222 } 1223 } 1224 1225 EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd); 1226 EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs); 1227 1228 for (i = 0; i < 100; i++) { 1229 hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH; 1230 if (hcr != EHCI_STS_HCH) 1231 break; 1232 1233 usb_delay_ms(&sc->sc_bus, 1); 1234 } 1235 if (hcr == EHCI_STS_HCH) 1236 printf("%s: config timeout\n", device_xname(dv)); 1237 1238 return true; 1239 } 1240 1241 /* 1242 * Shut down the controller when the system is going down. 1243 */ 1244 bool 1245 ehci_shutdown(device_t self, int flags) 1246 { 1247 ehci_softc_t *sc = device_private(self); 1248 1249 DPRINTF(("ehci_shutdown: stopping the HC\n")); 1250 EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */ 1251 EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET); 1252 return true; 1253 } 1254 1255 Static usbd_status 1256 ehci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size) 1257 { 1258 struct ehci_softc *sc = bus->hci_private; 1259 usbd_status err; 1260 1261 err = usb_allocmem(&sc->sc_bus, size, 0, dma); 1262 if (err == USBD_NOMEM) 1263 err = usb_reserve_allocm(&sc->sc_dma_reserve, dma, size); 1264 #ifdef EHCI_DEBUG 1265 if (err) 1266 printf("ehci_allocm: usb_allocmem()=%d\n", err); 1267 #endif 1268 return (err); 1269 } 1270 1271 Static void 1272 ehci_freem(struct usbd_bus *bus, usb_dma_t *dma) 1273 { 1274 struct ehci_softc *sc = bus->hci_private; 1275 1276 if (dma->block->flags & USB_DMA_RESERVE) { 1277 usb_reserve_freem(&sc->sc_dma_reserve, 1278 dma); 1279 return; 1280 } 1281 usb_freemem(&sc->sc_bus, dma); 1282 } 1283 1284 Static usbd_xfer_handle 1285 ehci_allocx(struct usbd_bus *bus) 1286 { 1287 struct ehci_softc *sc = bus->hci_private; 1288 usbd_xfer_handle xfer; 1289 1290 xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers); 1291 if (xfer != NULL) { 1292 SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, next); 1293 #ifdef DIAGNOSTIC 1294 if (xfer->busy_free != XFER_FREE) { 1295 printf("ehci_allocx: xfer=%p not free, 0x%08x\n", xfer, 1296 xfer->busy_free); 1297 } 1298 #endif 1299 } else { 1300 xfer = malloc(sizeof(struct ehci_xfer), M_USB, M_NOWAIT); 1301 } 1302 if (xfer != NULL) { 1303 memset(xfer, 0, sizeof(struct ehci_xfer)); 1304 #ifdef DIAGNOSTIC 1305 EXFER(xfer)->isdone = 1; 1306 xfer->busy_free = XFER_BUSY; 1307 #endif 1308 } 1309 return (xfer); 1310 } 1311 1312 Static void 1313 ehci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer) 1314 { 1315 struct ehci_softc *sc = bus->hci_private; 1316 1317 #ifdef DIAGNOSTIC 1318 if (xfer->busy_free != XFER_BUSY) { 1319 printf("ehci_freex: xfer=%p not busy, 0x%08x\n", xfer, 1320 xfer->busy_free); 1321 } 1322 xfer->busy_free = XFER_FREE; 1323 if (!EXFER(xfer)->isdone) { 1324 printf("ehci_freex: !isdone\n"); 1325 } 1326 #endif 1327 SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next); 1328 } 1329 1330 Static void 1331 ehci_device_clear_toggle(usbd_pipe_handle pipe) 1332 { 1333 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 1334 1335 DPRINTF(("ehci_device_clear_toggle: epipe=%p status=0x%x\n", 1336 epipe, epipe->sqh->qh.qh_qtd.qtd_status)); 1337 #ifdef EHCI_DEBUG 1338 if (ehcidebug) 1339 usbd_dump_pipe(pipe); 1340 #endif 1341 epipe->nexttoggle = 0; 1342 } 1343 1344 Static void 1345 ehci_noop(usbd_pipe_handle pipe) 1346 { 1347 } 1348 1349 #ifdef EHCI_DEBUG 1350 Static void 1351 ehci_dump_regs(ehci_softc_t *sc) 1352 { 1353 int i; 1354 printf("cmd=0x%08x, sts=0x%08x, ien=0x%08x\n", 1355 EOREAD4(sc, EHCI_USBCMD), 1356 EOREAD4(sc, EHCI_USBSTS), 1357 EOREAD4(sc, EHCI_USBINTR)); 1358 printf("frindex=0x%08x ctrdsegm=0x%08x periodic=0x%08x async=0x%08x\n", 1359 EOREAD4(sc, EHCI_FRINDEX), 1360 EOREAD4(sc, EHCI_CTRLDSSEGMENT), 1361 EOREAD4(sc, EHCI_PERIODICLISTBASE), 1362 EOREAD4(sc, EHCI_ASYNCLISTADDR)); 1363 for (i = 1; i <= sc->sc_noport; i++) 1364 printf("port %d status=0x%08x\n", i, 1365 EOREAD4(sc, EHCI_PORTSC(i))); 1366 } 1367 1368 /* 1369 * Unused function - this is meant to be called from a kernel 1370 * debugger. 1371 */ 1372 void 1373 ehci_dump(void) 1374 { 1375 ehci_dump_regs(theehci); 1376 } 1377 1378 Static void 1379 ehci_dump_link(ehci_link_t link, int type) 1380 { 1381 link = le32toh(link); 1382 printf("0x%08x", link); 1383 if (link & EHCI_LINK_TERMINATE) 1384 printf("<T>"); 1385 else { 1386 printf("<"); 1387 if (type) { 1388 switch (EHCI_LINK_TYPE(link)) { 1389 case EHCI_LINK_ITD: printf("ITD"); break; 1390 case EHCI_LINK_QH: printf("QH"); break; 1391 case EHCI_LINK_SITD: printf("SITD"); break; 1392 case EHCI_LINK_FSTN: printf("FSTN"); break; 1393 } 1394 } 1395 printf(">"); 1396 } 1397 } 1398 1399 Static void 1400 ehci_dump_sqtds(ehci_soft_qtd_t *sqtd) 1401 { 1402 int i; 1403 u_int32_t stop; 1404 1405 stop = 0; 1406 for (i = 0; sqtd && i < 20 && !stop; sqtd = sqtd->nextqtd, i++) { 1407 ehci_dump_sqtd(sqtd); 1408 usb_syncmem(&sqtd->dma, 1409 sqtd->offs + offsetof(ehci_qtd_t, qtd_next), 1410 sizeof(sqtd->qtd), 1411 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1412 stop = sqtd->qtd.qtd_next & htole32(EHCI_LINK_TERMINATE); 1413 usb_syncmem(&sqtd->dma, 1414 sqtd->offs + offsetof(ehci_qtd_t, qtd_next), 1415 sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); 1416 } 1417 if (sqtd) 1418 printf("dump aborted, too many TDs\n"); 1419 } 1420 1421 Static void 1422 ehci_dump_sqtd(ehci_soft_qtd_t *sqtd) 1423 { 1424 usb_syncmem(&sqtd->dma, sqtd->offs, 1425 sizeof(sqtd->qtd), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1426 printf("QTD(%p) at 0x%08x:\n", sqtd, sqtd->physaddr); 1427 ehci_dump_qtd(&sqtd->qtd); 1428 usb_syncmem(&sqtd->dma, sqtd->offs, 1429 sizeof(sqtd->qtd), BUS_DMASYNC_PREREAD); 1430 } 1431 1432 Static void 1433 ehci_dump_qtd(ehci_qtd_t *qtd) 1434 { 1435 u_int32_t s; 1436 char sbuf[128]; 1437 1438 printf(" next="); ehci_dump_link(qtd->qtd_next, 0); 1439 printf(" altnext="); ehci_dump_link(qtd->qtd_altnext, 0); 1440 printf("\n"); 1441 s = le32toh(qtd->qtd_status); 1442 snprintb(sbuf, sizeof(sbuf), 1443 "\20\10ACTIVE\7HALTED\6BUFERR\5BABBLE\4XACTERR" 1444 "\3MISSED\2SPLIT\1PING", EHCI_QTD_GET_STATUS(s)); 1445 printf(" status=0x%08x: toggle=%d bytes=0x%x ioc=%d c_page=0x%x\n", 1446 s, EHCI_QTD_GET_TOGGLE(s), EHCI_QTD_GET_BYTES(s), 1447 EHCI_QTD_GET_IOC(s), EHCI_QTD_GET_C_PAGE(s)); 1448 printf(" cerr=%d pid=%d stat=0x%s\n", EHCI_QTD_GET_CERR(s), 1449 EHCI_QTD_GET_PID(s), sbuf); 1450 for (s = 0; s < 5; s++) 1451 printf(" buffer[%d]=0x%08x\n", s, le32toh(qtd->qtd_buffer[s])); 1452 } 1453 1454 Static void 1455 ehci_dump_sqh(ehci_soft_qh_t *sqh) 1456 { 1457 ehci_qh_t *qh = &sqh->qh; 1458 u_int32_t endp, endphub; 1459 1460 usb_syncmem(&sqh->dma, sqh->offs, 1461 sizeof(sqh->qh), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1462 printf("QH(%p) at 0x%08x:\n", sqh, sqh->physaddr); 1463 printf(" link="); ehci_dump_link(qh->qh_link, 1); printf("\n"); 1464 endp = le32toh(qh->qh_endp); 1465 printf(" endp=0x%08x\n", endp); 1466 printf(" addr=0x%02x inact=%d endpt=%d eps=%d dtc=%d hrecl=%d\n", 1467 EHCI_QH_GET_ADDR(endp), EHCI_QH_GET_INACT(endp), 1468 EHCI_QH_GET_ENDPT(endp), EHCI_QH_GET_EPS(endp), 1469 EHCI_QH_GET_DTC(endp), EHCI_QH_GET_HRECL(endp)); 1470 printf(" mpl=0x%x ctl=%d nrl=%d\n", 1471 EHCI_QH_GET_MPL(endp), EHCI_QH_GET_CTL(endp), 1472 EHCI_QH_GET_NRL(endp)); 1473 endphub = le32toh(qh->qh_endphub); 1474 printf(" endphub=0x%08x\n", endphub); 1475 printf(" smask=0x%02x cmask=0x%02x huba=0x%02x port=%d mult=%d\n", 1476 EHCI_QH_GET_SMASK(endphub), EHCI_QH_GET_CMASK(endphub), 1477 EHCI_QH_GET_HUBA(endphub), EHCI_QH_GET_PORT(endphub), 1478 EHCI_QH_GET_MULT(endphub)); 1479 printf(" curqtd="); ehci_dump_link(qh->qh_curqtd, 0); printf("\n"); 1480 printf("Overlay qTD:\n"); 1481 ehci_dump_qtd(&qh->qh_qtd); 1482 usb_syncmem(&sqh->dma, sqh->offs, 1483 sizeof(sqh->qh), BUS_DMASYNC_PREREAD); 1484 } 1485 1486 #if notyet 1487 Static void 1488 ehci_dump_itd(struct ehci_soft_itd *itd) 1489 { 1490 ehci_isoc_trans_t t; 1491 ehci_isoc_bufr_ptr_t b, b2, b3; 1492 int i; 1493 1494 printf("ITD: next phys=%X\n", itd->itd.itd_next); 1495 1496 for (i = 0; i < EHCI_ITD_NUFRAMES; i++) { 1497 t = le32toh(itd->itd.itd_ctl[i]); 1498 printf("ITDctl %d: stat=%X len=%X ioc=%X pg=%X offs=%X\n", i, 1499 EHCI_ITD_GET_STATUS(t), EHCI_ITD_GET_LEN(t), 1500 EHCI_ITD_GET_IOC(t), EHCI_ITD_GET_PG(t), 1501 EHCI_ITD_GET_OFFS(t)); 1502 } 1503 printf("ITDbufr: "); 1504 for (i = 0; i < EHCI_ITD_NBUFFERS; i++) 1505 printf("%X,", EHCI_ITD_GET_BPTR(le32toh(itd->itd.itd_bufr[i]))); 1506 1507 b = le32toh(itd->itd.itd_bufr[0]); 1508 b2 = le32toh(itd->itd.itd_bufr[1]); 1509 b3 = le32toh(itd->itd.itd_bufr[2]); 1510 printf("\nep=%X daddr=%X dir=%d maxpkt=%X multi=%X\n", 1511 EHCI_ITD_GET_EP(b), EHCI_ITD_GET_DADDR(b), EHCI_ITD_GET_DIR(b2), 1512 EHCI_ITD_GET_MAXPKT(b2), EHCI_ITD_GET_MULTI(b3)); 1513 } 1514 1515 Static void 1516 ehci_dump_sitd(struct ehci_soft_itd *itd) 1517 { 1518 printf("SITD %p next=%p prev=%p xfernext=%p physaddr=%X slot=%d\n", 1519 itd, itd->u.frame_list.next, itd->u.frame_list.prev, 1520 itd->xfer_next, itd->physaddr, itd->slot); 1521 } 1522 #endif 1523 1524 #ifdef DIAGNOSTIC 1525 Static void 1526 ehci_dump_exfer(struct ehci_xfer *ex) 1527 { 1528 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); 1529 } 1530 #endif 1531 #endif 1532 1533 Static usbd_status 1534 ehci_open(usbd_pipe_handle pipe) 1535 { 1536 usbd_device_handle dev = pipe->device; 1537 ehci_softc_t *sc = dev->bus->hci_private; 1538 usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc; 1539 u_int8_t addr = dev->address; 1540 u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE; 1541 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 1542 ehci_soft_qh_t *sqh; 1543 usbd_status err; 1544 int s; 1545 int ival, speed, naks; 1546 int hshubaddr, hshubport; 1547 1548 DPRINTFN(1, ("ehci_open: pipe=%p, addr=%d, endpt=%d (%d)\n", 1549 pipe, addr, ed->bEndpointAddress, sc->sc_addr)); 1550 1551 if (dev->myhsport) { 1552 /* 1553 * When directly attached FS/LS device while doing embedded 1554 * transaction translations and we are the hub, set the hub 1555 * adddress to 0 (us). 1556 */ 1557 if (!(sc->sc_flags & EHCIF_ETTF) 1558 || (dev->myhsport->parent->address != sc->sc_addr)) { 1559 hshubaddr = dev->myhsport->parent->address; 1560 } else { 1561 hshubaddr = 0; 1562 } 1563 hshubport = dev->myhsport->portno; 1564 } else { 1565 hshubaddr = 0; 1566 hshubport = 0; 1567 } 1568 1569 if (sc->sc_dying) 1570 return (USBD_IOERROR); 1571 1572 /* toggle state needed for bulk endpoints */ 1573 epipe->nexttoggle = pipe->endpoint->datatoggle; 1574 1575 if (addr == sc->sc_addr) { 1576 switch (ed->bEndpointAddress) { 1577 case USB_CONTROL_ENDPOINT: 1578 pipe->methods = &ehci_root_ctrl_methods; 1579 break; 1580 case UE_DIR_IN | EHCI_INTR_ENDPT: 1581 pipe->methods = &ehci_root_intr_methods; 1582 break; 1583 default: 1584 DPRINTF(("ehci_open: bad bEndpointAddress 0x%02x\n", 1585 ed->bEndpointAddress)); 1586 return (USBD_INVAL); 1587 } 1588 return (USBD_NORMAL_COMPLETION); 1589 } 1590 1591 /* XXX All this stuff is only valid for async. */ 1592 switch (dev->speed) { 1593 case USB_SPEED_LOW: speed = EHCI_QH_SPEED_LOW; break; 1594 case USB_SPEED_FULL: speed = EHCI_QH_SPEED_FULL; break; 1595 case USB_SPEED_HIGH: speed = EHCI_QH_SPEED_HIGH; break; 1596 default: panic("ehci_open: bad device speed %d", dev->speed); 1597 } 1598 if (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_ISOCHRONOUS) { 1599 aprint_error_dev(sc->sc_dev, "error opening low/full speed " 1600 "isoc endpoint.\n"); 1601 aprint_normal_dev(sc->sc_dev, "a low/full speed device is " 1602 "attached to a USB2 hub, and transaction translations are " 1603 "not yet supported.\n"); 1604 aprint_normal_dev(sc->sc_dev, "reattach the device to the " 1605 "root hub instead.\n"); 1606 DPRINTFN(1,("ehci_open: hshubaddr=%d hshubport=%d\n", 1607 hshubaddr, hshubport)); 1608 return USBD_INVAL; 1609 } 1610 1611 /* 1612 * For interrupt transfer, nak throttling must be disabled, but for 1613 * the other transfer type, nak throttling should be enabled from the 1614 * veiwpoint that avoids the memory thrashing. 1615 */ 1616 naks = (xfertype == UE_INTERRUPT) ? 0 1617 : ((speed == EHCI_QH_SPEED_HIGH) ? 4 : 0); 1618 1619 /* Allocate sqh for everything, save isoc xfers */ 1620 if (xfertype != UE_ISOCHRONOUS) { 1621 sqh = ehci_alloc_sqh(sc); 1622 if (sqh == NULL) 1623 return (USBD_NOMEM); 1624 /* qh_link filled when the QH is added */ 1625 sqh->qh.qh_endp = htole32( 1626 EHCI_QH_SET_ADDR(addr) | 1627 EHCI_QH_SET_ENDPT(UE_GET_ADDR(ed->bEndpointAddress)) | 1628 EHCI_QH_SET_EPS(speed) | 1629 EHCI_QH_DTC | 1630 EHCI_QH_SET_MPL(UGETW(ed->wMaxPacketSize)) | 1631 (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_CONTROL ? 1632 EHCI_QH_CTL : 0) | 1633 EHCI_QH_SET_NRL(naks) 1634 ); 1635 sqh->qh.qh_endphub = htole32( 1636 EHCI_QH_SET_MULT(1) | 1637 EHCI_QH_SET_SMASK(xfertype == UE_INTERRUPT ? 0x02 : 0) 1638 ); 1639 if (speed != EHCI_QH_SPEED_HIGH) 1640 sqh->qh.qh_endphub |= htole32( 1641 EHCI_QH_SET_PORT(hshubport) | 1642 EHCI_QH_SET_HUBA(hshubaddr) | 1643 EHCI_QH_SET_CMASK(0x08) /* XXX */ 1644 ); 1645 sqh->qh.qh_curqtd = EHCI_NULL; 1646 /* Fill the overlay qTD */ 1647 sqh->qh.qh_qtd.qtd_next = EHCI_NULL; 1648 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 1649 sqh->qh.qh_qtd.qtd_status = htole32(0); 1650 1651 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1652 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1653 epipe->sqh = sqh; 1654 } else { 1655 sqh = NULL; 1656 } /*xfertype == UE_ISOC*/ 1657 1658 switch (xfertype) { 1659 case UE_CONTROL: 1660 err = usb_allocmem(&sc->sc_bus, sizeof(usb_device_request_t), 1661 0, &epipe->u.ctl.reqdma); 1662 #ifdef EHCI_DEBUG 1663 if (err) 1664 printf("ehci_open: usb_allocmem()=%d\n", err); 1665 #endif 1666 if (err) 1667 goto bad; 1668 pipe->methods = &ehci_device_ctrl_methods; 1669 s = splusb(); 1670 ehci_add_qh(sqh, sc->sc_async_head); 1671 splx(s); 1672 break; 1673 case UE_BULK: 1674 pipe->methods = &ehci_device_bulk_methods; 1675 s = splusb(); 1676 ehci_add_qh(sqh, sc->sc_async_head); 1677 splx(s); 1678 break; 1679 case UE_INTERRUPT: 1680 pipe->methods = &ehci_device_intr_methods; 1681 ival = pipe->interval; 1682 if (ival == USBD_DEFAULT_INTERVAL) { 1683 if (speed == EHCI_QH_SPEED_HIGH) { 1684 if (ed->bInterval > 16) { 1685 /* 1686 * illegal with high-speed, but there 1687 * were documentation bugs in the spec, 1688 * so be generous 1689 */ 1690 ival = 256; 1691 } else 1692 ival = (1 << (ed->bInterval - 1)) / 8; 1693 } else 1694 ival = ed->bInterval; 1695 } 1696 err = ehci_device_setintr(sc, sqh, ival); 1697 if (err) 1698 goto bad; 1699 break; 1700 case UE_ISOCHRONOUS: 1701 pipe->methods = &ehci_device_isoc_methods; 1702 if (ed->bInterval == 0 || ed->bInterval > 16) { 1703 printf("ehci: opening pipe with invalid bInterval\n"); 1704 err = USBD_INVAL; 1705 goto bad; 1706 } 1707 if (UGETW(ed->wMaxPacketSize) == 0) { 1708 printf("ehci: zero length endpoint open request\n"); 1709 err = USBD_INVAL; 1710 goto bad; 1711 } 1712 epipe->u.isoc.next_frame = 0; 1713 epipe->u.isoc.cur_xfers = 0; 1714 break; 1715 default: 1716 DPRINTF(("ehci: bad xfer type %d\n", xfertype)); 1717 err = USBD_INVAL; 1718 goto bad; 1719 } 1720 return (USBD_NORMAL_COMPLETION); 1721 1722 bad: 1723 if (sqh != NULL) 1724 ehci_free_sqh(sc, sqh); 1725 return (err); 1726 } 1727 1728 /* 1729 * Add an ED to the schedule. Called at splusb(). 1730 */ 1731 Static void 1732 ehci_add_qh(ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) 1733 { 1734 SPLUSBCHECK; 1735 1736 usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), 1737 sizeof(head->qh.qh_link), BUS_DMASYNC_POSTWRITE); 1738 sqh->next = head->next; 1739 sqh->qh.qh_link = head->qh.qh_link; 1740 usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), 1741 sizeof(sqh->qh.qh_link), BUS_DMASYNC_PREWRITE); 1742 head->next = sqh; 1743 head->qh.qh_link = htole32(sqh->physaddr | EHCI_LINK_QH); 1744 usb_syncmem(&head->dma, head->offs + offsetof(ehci_qh_t, qh_link), 1745 sizeof(head->qh.qh_link), BUS_DMASYNC_PREWRITE); 1746 1747 #ifdef EHCI_DEBUG 1748 if (ehcidebug > 5) { 1749 printf("ehci_add_qh:\n"); 1750 ehci_dump_sqh(sqh); 1751 } 1752 #endif 1753 } 1754 1755 /* 1756 * Remove an ED from the schedule. Called at splusb(). 1757 */ 1758 Static void 1759 ehci_rem_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head) 1760 { 1761 ehci_soft_qh_t *p; 1762 1763 SPLUSBCHECK; 1764 /* XXX */ 1765 for (p = head; p != NULL && p->next != sqh; p = p->next) 1766 ; 1767 if (p == NULL) 1768 panic("ehci_rem_qh: ED not found"); 1769 usb_syncmem(&sqh->dma, sqh->offs + offsetof(ehci_qh_t, qh_link), 1770 sizeof(sqh->qh.qh_link), BUS_DMASYNC_POSTWRITE); 1771 p->next = sqh->next; 1772 p->qh.qh_link = sqh->qh.qh_link; 1773 usb_syncmem(&p->dma, p->offs + offsetof(ehci_qh_t, qh_link), 1774 sizeof(p->qh.qh_link), BUS_DMASYNC_PREWRITE); 1775 1776 ehci_sync_hc(sc); 1777 } 1778 1779 Static void 1780 ehci_set_qh_qtd(ehci_soft_qh_t *sqh, ehci_soft_qtd_t *sqtd) 1781 { 1782 int i; 1783 u_int32_t status; 1784 1785 /* Save toggle bit and ping status. */ 1786 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1787 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 1788 status = sqh->qh.qh_qtd.qtd_status & 1789 htole32(EHCI_QTD_TOGGLE_MASK | 1790 EHCI_QTD_SET_STATUS(EHCI_QTD_PINGSTATE)); 1791 /* Set HALTED to make hw leave it alone. */ 1792 sqh->qh.qh_qtd.qtd_status = 1793 htole32(EHCI_QTD_SET_STATUS(EHCI_QTD_HALTED)); 1794 usb_syncmem(&sqh->dma, 1795 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 1796 sizeof(sqh->qh.qh_qtd.qtd_status), 1797 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1798 sqh->qh.qh_curqtd = 0; 1799 sqh->qh.qh_qtd.qtd_next = htole32(sqtd->physaddr); 1800 sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL; 1801 for (i = 0; i < EHCI_QTD_NBUFFERS; i++) 1802 sqh->qh.qh_qtd.qtd_buffer[i] = 0; 1803 sqh->sqtd = sqtd; 1804 usb_syncmem(&sqh->dma, sqh->offs, sizeof(sqh->qh), 1805 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1806 /* Set !HALTED && !ACTIVE to start execution, preserve some fields */ 1807 sqh->qh.qh_qtd.qtd_status = status; 1808 usb_syncmem(&sqh->dma, 1809 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 1810 sizeof(sqh->qh.qh_qtd.qtd_status), 1811 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1812 } 1813 1814 /* 1815 * Ensure that the HC has released all references to the QH. We do this 1816 * by asking for a Async Advance Doorbell interrupt and then we wait for 1817 * the interrupt. 1818 * To make this easier we first obtain exclusive use of the doorbell. 1819 */ 1820 Static void 1821 ehci_sync_hc(ehci_softc_t *sc) 1822 { 1823 int s, error; 1824 1825 if (sc->sc_dying) { 1826 DPRINTFN(2,("ehci_sync_hc: dying\n")); 1827 return; 1828 } 1829 DPRINTFN(2,("ehci_sync_hc: enter\n")); 1830 mutex_enter(&sc->sc_doorbell_lock); /* get doorbell */ 1831 s = splhardusb(); 1832 /* ask for doorbell */ 1833 EOWRITE4(sc, EHCI_USBCMD, EOREAD4(sc, EHCI_USBCMD) | EHCI_CMD_IAAD); 1834 DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n", 1835 EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS))); 1836 error = tsleep(&sc->sc_async_head, PZERO, "ehcidi", hz); /* bell wait */ 1837 DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n", 1838 EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS))); 1839 splx(s); 1840 mutex_exit(&sc->sc_doorbell_lock); /* release doorbell */ 1841 #ifdef DIAGNOSTIC 1842 if (error) 1843 printf("ehci_sync_hc: tsleep() = %d\n", error); 1844 #endif 1845 DPRINTFN(2,("ehci_sync_hc: exit\n")); 1846 } 1847 1848 /*Call at splusb*/ 1849 Static void 1850 ehci_rem_free_itd_chain(ehci_softc_t *sc, struct ehci_xfer *exfer) 1851 { 1852 struct ehci_soft_itd *itd, *prev; 1853 1854 prev = NULL; 1855 1856 if (exfer->itdstart == NULL || exfer->itdend == NULL) 1857 panic("ehci isoc xfer being freed, but with no itd chain\n"); 1858 1859 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 1860 prev = itd->u.frame_list.prev; 1861 /* Unlink itd from hardware chain, or frame array */ 1862 if (prev == NULL) { /* We're at the table head */ 1863 sc->sc_softitds[itd->slot] = itd->u.frame_list.next; 1864 sc->sc_flist[itd->slot] = itd->itd.itd_next; 1865 usb_syncmem(&sc->sc_fldma, 1866 sizeof(ehci_link_t) * itd->slot, 1867 sizeof(ehci_link_t), 1868 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1869 1870 if (itd->u.frame_list.next != NULL) 1871 itd->u.frame_list.next->u.frame_list.prev = NULL; 1872 } else { 1873 /* XXX this part is untested... */ 1874 prev->itd.itd_next = itd->itd.itd_next; 1875 usb_syncmem(&itd->dma, 1876 itd->offs + offsetof(ehci_itd_t, itd_next), 1877 sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE); 1878 1879 prev->u.frame_list.next = itd->u.frame_list.next; 1880 if (itd->u.frame_list.next != NULL) 1881 itd->u.frame_list.next->u.frame_list.prev = prev; 1882 } 1883 } 1884 1885 prev = NULL; 1886 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 1887 if (prev != NULL) 1888 ehci_free_itd(sc, prev); 1889 prev = itd; 1890 } 1891 if (prev) 1892 ehci_free_itd(sc, prev); 1893 exfer->itdstart = NULL; 1894 exfer->itdend = NULL; 1895 } 1896 1897 /***********/ 1898 1899 /* 1900 * Data structures and routines to emulate the root hub. 1901 */ 1902 Static usb_device_descriptor_t ehci_devd = { 1903 USB_DEVICE_DESCRIPTOR_SIZE, 1904 UDESC_DEVICE, /* type */ 1905 {0x00, 0x02}, /* USB version */ 1906 UDCLASS_HUB, /* class */ 1907 UDSUBCLASS_HUB, /* subclass */ 1908 UDPROTO_HSHUBSTT, /* protocol */ 1909 64, /* max packet */ 1910 {0},{0},{0x00,0x01}, /* device id */ 1911 1,2,0, /* string indicies */ 1912 1 /* # of configurations */ 1913 }; 1914 1915 Static const usb_device_qualifier_t ehci_odevd = { 1916 USB_DEVICE_DESCRIPTOR_SIZE, 1917 UDESC_DEVICE_QUALIFIER, /* type */ 1918 {0x00, 0x02}, /* USB version */ 1919 UDCLASS_HUB, /* class */ 1920 UDSUBCLASS_HUB, /* subclass */ 1921 UDPROTO_FSHUB, /* protocol */ 1922 64, /* max packet */ 1923 1, /* # of configurations */ 1924 0 1925 }; 1926 1927 Static const usb_config_descriptor_t ehci_confd = { 1928 USB_CONFIG_DESCRIPTOR_SIZE, 1929 UDESC_CONFIG, 1930 {USB_CONFIG_DESCRIPTOR_SIZE + 1931 USB_INTERFACE_DESCRIPTOR_SIZE + 1932 USB_ENDPOINT_DESCRIPTOR_SIZE}, 1933 1, 1934 1, 1935 0, 1936 UC_ATTR_MBO | UC_SELF_POWERED, 1937 0 /* max power */ 1938 }; 1939 1940 Static const usb_interface_descriptor_t ehci_ifcd = { 1941 USB_INTERFACE_DESCRIPTOR_SIZE, 1942 UDESC_INTERFACE, 1943 0, 1944 0, 1945 1, 1946 UICLASS_HUB, 1947 UISUBCLASS_HUB, 1948 UIPROTO_HSHUBSTT, 1949 0 1950 }; 1951 1952 Static const usb_endpoint_descriptor_t ehci_endpd = { 1953 USB_ENDPOINT_DESCRIPTOR_SIZE, 1954 UDESC_ENDPOINT, 1955 UE_DIR_IN | EHCI_INTR_ENDPT, 1956 UE_INTERRUPT, 1957 {8, 0}, /* max packet */ 1958 12 1959 }; 1960 1961 Static const usb_hub_descriptor_t ehci_hubd = { 1962 USB_HUB_DESCRIPTOR_SIZE, 1963 UDESC_HUB, 1964 0, 1965 {0,0}, 1966 0, 1967 0, 1968 {""}, 1969 {""}, 1970 }; 1971 1972 /* 1973 * Simulate a hardware hub by handling all the necessary requests. 1974 */ 1975 Static usbd_status 1976 ehci_root_ctrl_transfer(usbd_xfer_handle xfer) 1977 { 1978 usbd_status err; 1979 1980 /* Insert last in queue. */ 1981 err = usb_insert_transfer(xfer); 1982 if (err) 1983 return (err); 1984 1985 /* Pipe isn't running, start first */ 1986 return (ehci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 1987 } 1988 1989 Static usbd_status 1990 ehci_root_ctrl_start(usbd_xfer_handle xfer) 1991 { 1992 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 1993 usb_device_request_t *req; 1994 void *buf = NULL; 1995 int port, i; 1996 int s, len, value, index, l, totlen = 0; 1997 usb_port_status_t ps; 1998 usb_hub_descriptor_t hubd; 1999 usbd_status err; 2000 u_int32_t v; 2001 2002 if (sc->sc_dying) 2003 return (USBD_IOERROR); 2004 2005 #ifdef DIAGNOSTIC 2006 if (!(xfer->rqflags & URQ_REQUEST)) 2007 /* XXX panic */ 2008 return (USBD_INVAL); 2009 #endif 2010 req = &xfer->request; 2011 2012 DPRINTFN(4,("ehci_root_ctrl_start: type=0x%02x request=%02x\n", 2013 req->bmRequestType, req->bRequest)); 2014 2015 len = UGETW(req->wLength); 2016 value = UGETW(req->wValue); 2017 index = UGETW(req->wIndex); 2018 2019 if (len != 0) 2020 buf = KERNADDR(&xfer->dmabuf, 0); 2021 2022 #define C(x,y) ((x) | ((y) << 8)) 2023 switch(C(req->bRequest, req->bmRequestType)) { 2024 case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE): 2025 case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE): 2026 case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT): 2027 /* 2028 * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops 2029 * for the integrated root hub. 2030 */ 2031 break; 2032 case C(UR_GET_CONFIG, UT_READ_DEVICE): 2033 if (len > 0) { 2034 *(u_int8_t *)buf = sc->sc_conf; 2035 totlen = 1; 2036 } 2037 break; 2038 case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): 2039 DPRINTFN(8,("ehci_root_ctrl_start: wValue=0x%04x\n", value)); 2040 if (len == 0) 2041 break; 2042 switch(value >> 8) { 2043 case UDESC_DEVICE: 2044 if ((value & 0xff) != 0) { 2045 err = USBD_IOERROR; 2046 goto ret; 2047 } 2048 totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); 2049 USETW(ehci_devd.idVendor, sc->sc_id_vendor); 2050 memcpy(buf, &ehci_devd, l); 2051 break; 2052 /* 2053 * We can't really operate at another speed, but the spec says 2054 * we need this descriptor. 2055 */ 2056 case UDESC_DEVICE_QUALIFIER: 2057 if ((value & 0xff) != 0) { 2058 err = USBD_IOERROR; 2059 goto ret; 2060 } 2061 totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); 2062 memcpy(buf, &ehci_odevd, l); 2063 break; 2064 /* 2065 * We can't really operate at another speed, but the spec says 2066 * we need this descriptor. 2067 */ 2068 case UDESC_OTHER_SPEED_CONFIGURATION: 2069 case UDESC_CONFIG: 2070 if ((value & 0xff) != 0) { 2071 err = USBD_IOERROR; 2072 goto ret; 2073 } 2074 totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE); 2075 memcpy(buf, &ehci_confd, l); 2076 ((usb_config_descriptor_t *)buf)->bDescriptorType = 2077 value >> 8; 2078 buf = (char *)buf + l; 2079 len -= l; 2080 l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE); 2081 totlen += l; 2082 memcpy(buf, &ehci_ifcd, l); 2083 buf = (char *)buf + l; 2084 len -= l; 2085 l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE); 2086 totlen += l; 2087 memcpy(buf, &ehci_endpd, l); 2088 break; 2089 case UDESC_STRING: 2090 #define sd ((usb_string_descriptor_t *)buf) 2091 switch (value & 0xff) { 2092 case 0: /* Language table */ 2093 totlen = usb_makelangtbl(sd, len); 2094 break; 2095 case 1: /* Vendor */ 2096 totlen = usb_makestrdesc(sd, len, 2097 sc->sc_vendor); 2098 break; 2099 case 2: /* Product */ 2100 totlen = usb_makestrdesc(sd, len, 2101 "EHCI root hub"); 2102 break; 2103 } 2104 #undef sd 2105 break; 2106 default: 2107 err = USBD_IOERROR; 2108 goto ret; 2109 } 2110 break; 2111 case C(UR_GET_INTERFACE, UT_READ_INTERFACE): 2112 if (len > 0) { 2113 *(u_int8_t *)buf = 0; 2114 totlen = 1; 2115 } 2116 break; 2117 case C(UR_GET_STATUS, UT_READ_DEVICE): 2118 if (len > 1) { 2119 USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED); 2120 totlen = 2; 2121 } 2122 break; 2123 case C(UR_GET_STATUS, UT_READ_INTERFACE): 2124 case C(UR_GET_STATUS, UT_READ_ENDPOINT): 2125 if (len > 1) { 2126 USETW(((usb_status_t *)buf)->wStatus, 0); 2127 totlen = 2; 2128 } 2129 break; 2130 case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): 2131 if (value >= USB_MAX_DEVICES) { 2132 err = USBD_IOERROR; 2133 goto ret; 2134 } 2135 sc->sc_addr = value; 2136 break; 2137 case C(UR_SET_CONFIG, UT_WRITE_DEVICE): 2138 if (value != 0 && value != 1) { 2139 err = USBD_IOERROR; 2140 goto ret; 2141 } 2142 sc->sc_conf = value; 2143 break; 2144 case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE): 2145 break; 2146 case C(UR_SET_FEATURE, UT_WRITE_DEVICE): 2147 case C(UR_SET_FEATURE, UT_WRITE_INTERFACE): 2148 case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT): 2149 err = USBD_IOERROR; 2150 goto ret; 2151 case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE): 2152 break; 2153 case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT): 2154 break; 2155 /* Hub requests */ 2156 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE): 2157 break; 2158 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER): 2159 DPRINTFN(4, ("ehci_root_ctrl_start: UR_CLEAR_PORT_FEATURE " 2160 "port=%d feature=%d\n", 2161 index, value)); 2162 if (index < 1 || index > sc->sc_noport) { 2163 err = USBD_IOERROR; 2164 goto ret; 2165 } 2166 port = EHCI_PORTSC(index); 2167 v = EOREAD4(sc, port); 2168 DPRINTFN(4, ("ehci_root_ctrl_start: portsc=0x%08x\n", v)); 2169 v &= ~EHCI_PS_CLEAR; 2170 switch(value) { 2171 case UHF_PORT_ENABLE: 2172 EOWRITE4(sc, port, v &~ EHCI_PS_PE); 2173 break; 2174 case UHF_PORT_SUSPEND: 2175 if (!(v & EHCI_PS_SUSP)) /* not suspended */ 2176 break; 2177 v &= ~EHCI_PS_SUSP; 2178 EOWRITE4(sc, port, v | EHCI_PS_FPR); 2179 /* see USB2 spec ch. 7.1.7.7 */ 2180 usb_delay_ms(&sc->sc_bus, 20); 2181 EOWRITE4(sc, port, v); 2182 usb_delay_ms(&sc->sc_bus, 2); 2183 #ifdef DEBUG 2184 v = EOREAD4(sc, port); 2185 if (v & (EHCI_PS_FPR | EHCI_PS_SUSP)) 2186 printf("ehci: resume failed: %x\n", v); 2187 #endif 2188 break; 2189 case UHF_PORT_POWER: 2190 if (sc->sc_hasppc) 2191 EOWRITE4(sc, port, v &~ EHCI_PS_PP); 2192 break; 2193 case UHF_PORT_TEST: 2194 DPRINTFN(2,("ehci_root_ctrl_start: clear port test " 2195 "%d\n", index)); 2196 break; 2197 case UHF_PORT_INDICATOR: 2198 DPRINTFN(2,("ehci_root_ctrl_start: clear port ind " 2199 "%d\n", index)); 2200 EOWRITE4(sc, port, v &~ EHCI_PS_PIC); 2201 break; 2202 case UHF_C_PORT_CONNECTION: 2203 EOWRITE4(sc, port, v | EHCI_PS_CSC); 2204 break; 2205 case UHF_C_PORT_ENABLE: 2206 EOWRITE4(sc, port, v | EHCI_PS_PEC); 2207 break; 2208 case UHF_C_PORT_SUSPEND: 2209 /* how? */ 2210 break; 2211 case UHF_C_PORT_OVER_CURRENT: 2212 EOWRITE4(sc, port, v | EHCI_PS_OCC); 2213 break; 2214 case UHF_C_PORT_RESET: 2215 sc->sc_isreset[index] = 0; 2216 break; 2217 default: 2218 err = USBD_IOERROR; 2219 goto ret; 2220 } 2221 #if 0 2222 switch(value) { 2223 case UHF_C_PORT_CONNECTION: 2224 case UHF_C_PORT_ENABLE: 2225 case UHF_C_PORT_SUSPEND: 2226 case UHF_C_PORT_OVER_CURRENT: 2227 case UHF_C_PORT_RESET: 2228 default: 2229 break; 2230 } 2231 #endif 2232 break; 2233 case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): 2234 if (len == 0) 2235 break; 2236 if ((value & 0xff) != 0) { 2237 err = USBD_IOERROR; 2238 goto ret; 2239 } 2240 hubd = ehci_hubd; 2241 hubd.bNbrPorts = sc->sc_noport; 2242 v = EOREAD4(sc, EHCI_HCSPARAMS); 2243 USETW(hubd.wHubCharacteristics, 2244 EHCI_HCS_PPC(v) ? UHD_PWR_INDIVIDUAL : UHD_PWR_NO_SWITCH | 2245 EHCI_HCS_P_INDICATOR(EREAD4(sc, EHCI_HCSPARAMS)) 2246 ? UHD_PORT_IND : 0); 2247 hubd.bPwrOn2PwrGood = 200; /* XXX can't find out? */ 2248 for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8) 2249 hubd.DeviceRemovable[i++] = 0; /* XXX can't find out? */ 2250 hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i; 2251 l = min(len, hubd.bDescLength); 2252 totlen = l; 2253 memcpy(buf, &hubd, l); 2254 break; 2255 case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): 2256 if (len != 4) { 2257 err = USBD_IOERROR; 2258 goto ret; 2259 } 2260 memset(buf, 0, len); /* ? XXX */ 2261 totlen = len; 2262 break; 2263 case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): 2264 DPRINTFN(8,("ehci_root_ctrl_start: get port status i=%d\n", 2265 index)); 2266 if (index < 1 || index > sc->sc_noport) { 2267 err = USBD_IOERROR; 2268 goto ret; 2269 } 2270 if (len != 4) { 2271 err = USBD_IOERROR; 2272 goto ret; 2273 } 2274 v = EOREAD4(sc, EHCI_PORTSC(index)); 2275 DPRINTFN(8,("ehci_root_ctrl_start: port status=0x%04x\n", v)); 2276 2277 i = UPS_HIGH_SPEED; 2278 #if 0 2279 if (sc->sc_flags & EHCIF_ETTF) { 2280 /* 2281 * If we are doing embedded transaction translation, 2282 * then directly attached LS/FS devices are reset by 2283 * the EHCI controller itself. PSPD is encoded 2284 * the same way as in USBSTATUS. 2285 */ 2286 i = __SHIFTOUT(v, EHCI_PS_PSPD) * UPS_LOW_SPEED; 2287 } 2288 #endif 2289 if (v & EHCI_PS_CS) i |= UPS_CURRENT_CONNECT_STATUS; 2290 if (v & EHCI_PS_PE) i |= UPS_PORT_ENABLED; 2291 if (v & EHCI_PS_SUSP) i |= UPS_SUSPEND; 2292 if (v & EHCI_PS_OCA) i |= UPS_OVERCURRENT_INDICATOR; 2293 if (v & EHCI_PS_PR) i |= UPS_RESET; 2294 if (v & EHCI_PS_PP) i |= UPS_PORT_POWER; 2295 if (sc->sc_vendor_port_status) 2296 i = sc->sc_vendor_port_status(sc, v, i); 2297 USETW(ps.wPortStatus, i); 2298 i = 0; 2299 if (v & EHCI_PS_CSC) i |= UPS_C_CONNECT_STATUS; 2300 if (v & EHCI_PS_PEC) i |= UPS_C_PORT_ENABLED; 2301 if (v & EHCI_PS_OCC) i |= UPS_C_OVERCURRENT_INDICATOR; 2302 if (sc->sc_isreset[index]) i |= UPS_C_PORT_RESET; 2303 USETW(ps.wPortChange, i); 2304 l = min(len, sizeof ps); 2305 memcpy(buf, &ps, l); 2306 totlen = l; 2307 break; 2308 case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): 2309 err = USBD_IOERROR; 2310 goto ret; 2311 case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): 2312 break; 2313 case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): 2314 if (index < 1 || index > sc->sc_noport) { 2315 err = USBD_IOERROR; 2316 goto ret; 2317 } 2318 port = EHCI_PORTSC(index); 2319 v = EOREAD4(sc, port); 2320 DPRINTFN(4, ("ehci_root_ctrl_start: portsc=0x%08x\n", v)); 2321 v &= ~EHCI_PS_CLEAR; 2322 switch(value) { 2323 case UHF_PORT_ENABLE: 2324 EOWRITE4(sc, port, v | EHCI_PS_PE); 2325 break; 2326 case UHF_PORT_SUSPEND: 2327 EOWRITE4(sc, port, v | EHCI_PS_SUSP); 2328 break; 2329 case UHF_PORT_RESET: 2330 DPRINTFN(5,("ehci_root_ctrl_start: reset port %d\n", 2331 index)); 2332 if (EHCI_PS_IS_LOWSPEED(v) 2333 && sc->sc_ncomp > 0 2334 && !(sc->sc_flags & EHCIF_ETTF)) { 2335 /* 2336 * Low speed device on non-ETTF controller or 2337 * unaccompanied controller, give up ownership. 2338 */ 2339 ehci_disown(sc, index, 1); 2340 break; 2341 } 2342 /* Start reset sequence. */ 2343 v &= ~ (EHCI_PS_PE | EHCI_PS_PR); 2344 EOWRITE4(sc, port, v | EHCI_PS_PR); 2345 /* Wait for reset to complete. */ 2346 usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY); 2347 if (sc->sc_dying) { 2348 err = USBD_IOERROR; 2349 goto ret; 2350 } 2351 /* 2352 * An embedded transaction translater will automatically 2353 * terminate the reset sequence so there's no need to 2354 * it. 2355 */ 2356 v = EOREAD4(sc, port); 2357 if (v & EHCI_PS_PR) { 2358 /* Terminate reset sequence. */ 2359 EOWRITE4(sc, port, v & ~EHCI_PS_PR); 2360 /* Wait for HC to complete reset. */ 2361 usb_delay_ms(&sc->sc_bus, 2362 EHCI_PORT_RESET_COMPLETE); 2363 if (sc->sc_dying) { 2364 err = USBD_IOERROR; 2365 goto ret; 2366 } 2367 } 2368 2369 v = EOREAD4(sc, port); 2370 DPRINTF(("ehci after reset, status=0x%08x\n", v)); 2371 if (v & EHCI_PS_PR) { 2372 printf("%s: port reset timeout\n", 2373 device_xname(sc->sc_dev)); 2374 return (USBD_TIMEOUT); 2375 } 2376 if (!(v & EHCI_PS_PE)) { 2377 /* Not a high speed device, give up ownership.*/ 2378 ehci_disown(sc, index, 0); 2379 break; 2380 } 2381 sc->sc_isreset[index] = 1; 2382 DPRINTF(("ehci port %d reset, status = 0x%08x\n", 2383 index, v)); 2384 break; 2385 case UHF_PORT_POWER: 2386 DPRINTFN(2,("ehci_root_ctrl_start: set port power " 2387 "%d (has PPC = %d)\n", index, 2388 sc->sc_hasppc)); 2389 if (sc->sc_hasppc) 2390 EOWRITE4(sc, port, v | EHCI_PS_PP); 2391 break; 2392 case UHF_PORT_TEST: 2393 DPRINTFN(2,("ehci_root_ctrl_start: set port test " 2394 "%d\n", index)); 2395 break; 2396 case UHF_PORT_INDICATOR: 2397 DPRINTFN(2,("ehci_root_ctrl_start: set port ind " 2398 "%d\n", index)); 2399 EOWRITE4(sc, port, v | EHCI_PS_PIC); 2400 break; 2401 default: 2402 err = USBD_IOERROR; 2403 goto ret; 2404 } 2405 break; 2406 case C(UR_CLEAR_TT_BUFFER, UT_WRITE_CLASS_OTHER): 2407 case C(UR_RESET_TT, UT_WRITE_CLASS_OTHER): 2408 case C(UR_GET_TT_STATE, UT_READ_CLASS_OTHER): 2409 case C(UR_STOP_TT, UT_WRITE_CLASS_OTHER): 2410 break; 2411 default: 2412 err = USBD_IOERROR; 2413 goto ret; 2414 } 2415 xfer->actlen = totlen; 2416 err = USBD_NORMAL_COMPLETION; 2417 ret: 2418 xfer->status = err; 2419 s = splusb(); 2420 usb_transfer_complete(xfer); 2421 splx(s); 2422 return (USBD_IN_PROGRESS); 2423 } 2424 2425 Static void 2426 ehci_disown(ehci_softc_t *sc, int index, int lowspeed) 2427 { 2428 int port; 2429 u_int32_t v; 2430 2431 DPRINTF(("ehci_disown: index=%d lowspeed=%d\n", index, lowspeed)); 2432 #ifdef DIAGNOSTIC 2433 if (sc->sc_npcomp != 0) { 2434 int i = (index-1) / sc->sc_npcomp; 2435 if (i >= sc->sc_ncomp) 2436 printf("%s: strange port\n", 2437 device_xname(sc->sc_dev)); 2438 else 2439 printf("%s: handing over %s speed device on " 2440 "port %d to %s\n", 2441 device_xname(sc->sc_dev), 2442 lowspeed ? "low" : "full", 2443 index, device_xname(sc->sc_comps[i])); 2444 } else { 2445 printf("%s: npcomp == 0\n", device_xname(sc->sc_dev)); 2446 } 2447 #endif 2448 port = EHCI_PORTSC(index); 2449 v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR; 2450 EOWRITE4(sc, port, v | EHCI_PS_PO); 2451 } 2452 2453 /* Abort a root control request. */ 2454 Static void 2455 ehci_root_ctrl_abort(usbd_xfer_handle xfer) 2456 { 2457 /* Nothing to do, all transfers are synchronous. */ 2458 } 2459 2460 /* Close the root pipe. */ 2461 Static void 2462 ehci_root_ctrl_close(usbd_pipe_handle pipe) 2463 { 2464 DPRINTF(("ehci_root_ctrl_close\n")); 2465 /* Nothing to do. */ 2466 } 2467 2468 Static void 2469 ehci_root_intr_done(usbd_xfer_handle xfer) 2470 { 2471 xfer->hcpriv = NULL; 2472 } 2473 2474 Static usbd_status 2475 ehci_root_intr_transfer(usbd_xfer_handle xfer) 2476 { 2477 usbd_status err; 2478 2479 /* Insert last in queue. */ 2480 err = usb_insert_transfer(xfer); 2481 if (err) 2482 return (err); 2483 2484 /* Pipe isn't running, start first */ 2485 return (ehci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2486 } 2487 2488 Static usbd_status 2489 ehci_root_intr_start(usbd_xfer_handle xfer) 2490 { 2491 usbd_pipe_handle pipe = xfer->pipe; 2492 ehci_softc_t *sc = pipe->device->bus->hci_private; 2493 2494 if (sc->sc_dying) 2495 return (USBD_IOERROR); 2496 2497 sc->sc_intrxfer = xfer; 2498 2499 return (USBD_IN_PROGRESS); 2500 } 2501 2502 /* Abort a root interrupt request. */ 2503 Static void 2504 ehci_root_intr_abort(usbd_xfer_handle xfer) 2505 { 2506 int s; 2507 2508 if (xfer->pipe->intrxfer == xfer) { 2509 DPRINTF(("ehci_root_intr_abort: remove\n")); 2510 xfer->pipe->intrxfer = NULL; 2511 } 2512 xfer->status = USBD_CANCELLED; 2513 s = splusb(); 2514 usb_transfer_complete(xfer); 2515 splx(s); 2516 } 2517 2518 /* Close the root pipe. */ 2519 Static void 2520 ehci_root_intr_close(usbd_pipe_handle pipe) 2521 { 2522 ehci_softc_t *sc = pipe->device->bus->hci_private; 2523 2524 DPRINTF(("ehci_root_intr_close\n")); 2525 2526 sc->sc_intrxfer = NULL; 2527 } 2528 2529 Static void 2530 ehci_root_ctrl_done(usbd_xfer_handle xfer) 2531 { 2532 xfer->hcpriv = NULL; 2533 } 2534 2535 /************************/ 2536 2537 Static ehci_soft_qh_t * 2538 ehci_alloc_sqh(ehci_softc_t *sc) 2539 { 2540 ehci_soft_qh_t *sqh; 2541 usbd_status err; 2542 int i, offs; 2543 usb_dma_t dma; 2544 2545 if (sc->sc_freeqhs == NULL) { 2546 DPRINTFN(2, ("ehci_alloc_sqh: allocating chunk\n")); 2547 err = usb_allocmem(&sc->sc_bus, EHCI_SQH_SIZE * EHCI_SQH_CHUNK, 2548 EHCI_PAGE_SIZE, &dma); 2549 #ifdef EHCI_DEBUG 2550 if (err) 2551 printf("ehci_alloc_sqh: usb_allocmem()=%d\n", err); 2552 #endif 2553 if (err) 2554 return (NULL); 2555 for(i = 0; i < EHCI_SQH_CHUNK; i++) { 2556 offs = i * EHCI_SQH_SIZE; 2557 sqh = KERNADDR(&dma, offs); 2558 sqh->physaddr = DMAADDR(&dma, offs); 2559 sqh->dma = dma; 2560 sqh->offs = offs; 2561 sqh->next = sc->sc_freeqhs; 2562 sc->sc_freeqhs = sqh; 2563 } 2564 } 2565 sqh = sc->sc_freeqhs; 2566 sc->sc_freeqhs = sqh->next; 2567 memset(&sqh->qh, 0, sizeof(ehci_qh_t)); 2568 sqh->next = NULL; 2569 return (sqh); 2570 } 2571 2572 Static void 2573 ehci_free_sqh(ehci_softc_t *sc, ehci_soft_qh_t *sqh) 2574 { 2575 sqh->next = sc->sc_freeqhs; 2576 sc->sc_freeqhs = sqh; 2577 } 2578 2579 Static ehci_soft_qtd_t * 2580 ehci_alloc_sqtd(ehci_softc_t *sc) 2581 { 2582 ehci_soft_qtd_t *sqtd; 2583 usbd_status err; 2584 int i, offs; 2585 usb_dma_t dma; 2586 int s; 2587 2588 if (sc->sc_freeqtds == NULL) { 2589 DPRINTFN(2, ("ehci_alloc_sqtd: allocating chunk\n")); 2590 err = usb_allocmem(&sc->sc_bus, EHCI_SQTD_SIZE*EHCI_SQTD_CHUNK, 2591 EHCI_PAGE_SIZE, &dma); 2592 #ifdef EHCI_DEBUG 2593 if (err) 2594 printf("ehci_alloc_sqtd: usb_allocmem()=%d\n", err); 2595 #endif 2596 if (err) 2597 return (NULL); 2598 s = splusb(); 2599 for(i = 0; i < EHCI_SQTD_CHUNK; i++) { 2600 offs = i * EHCI_SQTD_SIZE; 2601 sqtd = KERNADDR(&dma, offs); 2602 sqtd->physaddr = DMAADDR(&dma, offs); 2603 sqtd->dma = dma; 2604 sqtd->offs = offs; 2605 sqtd->nextqtd = sc->sc_freeqtds; 2606 sc->sc_freeqtds = sqtd; 2607 } 2608 splx(s); 2609 } 2610 2611 s = splusb(); 2612 sqtd = sc->sc_freeqtds; 2613 sc->sc_freeqtds = sqtd->nextqtd; 2614 memset(&sqtd->qtd, 0, sizeof(ehci_qtd_t)); 2615 sqtd->nextqtd = NULL; 2616 sqtd->xfer = NULL; 2617 splx(s); 2618 2619 return (sqtd); 2620 } 2621 2622 Static void 2623 ehci_free_sqtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd) 2624 { 2625 int s; 2626 2627 s = splusb(); 2628 sqtd->nextqtd = sc->sc_freeqtds; 2629 sc->sc_freeqtds = sqtd; 2630 splx(s); 2631 } 2632 2633 Static usbd_status 2634 ehci_alloc_sqtd_chain(struct ehci_pipe *epipe, ehci_softc_t *sc, 2635 int alen, int rd, usbd_xfer_handle xfer, 2636 ehci_soft_qtd_t **sp, ehci_soft_qtd_t **ep) 2637 { 2638 ehci_soft_qtd_t *next, *cur; 2639 ehci_physaddr_t dataphys, dataphyspage, dataphyslastpage, nextphys; 2640 u_int32_t qtdstatus; 2641 int len, curlen, mps; 2642 int i, tog; 2643 usb_dma_t *dma = &xfer->dmabuf; 2644 u_int16_t flags = xfer->flags; 2645 2646 DPRINTFN(alen<4*4096,("ehci_alloc_sqtd_chain: start len=%d\n", alen)); 2647 2648 len = alen; 2649 dataphys = DMAADDR(dma, 0); 2650 dataphyslastpage = EHCI_PAGE(dataphys + len - 1); 2651 qtdstatus = EHCI_QTD_ACTIVE | 2652 EHCI_QTD_SET_PID(rd ? EHCI_QTD_PID_IN : EHCI_QTD_PID_OUT) | 2653 EHCI_QTD_SET_CERR(3) 2654 /* IOC set below */ 2655 /* BYTES set below */ 2656 ; 2657 mps = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); 2658 tog = epipe->nexttoggle; 2659 qtdstatus |= EHCI_QTD_SET_TOGGLE(tog); 2660 2661 cur = ehci_alloc_sqtd(sc); 2662 *sp = cur; 2663 if (cur == NULL) 2664 goto nomem; 2665 2666 usb_syncmem(dma, 0, alen, 2667 rd ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 2668 for (;;) { 2669 dataphyspage = EHCI_PAGE(dataphys); 2670 /* The EHCI hardware can handle at most 5 pages. */ 2671 if (dataphyslastpage - dataphyspage < 2672 EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE) { 2673 /* we can handle it in this QTD */ 2674 curlen = len; 2675 } else { 2676 /* must use multiple TDs, fill as much as possible. */ 2677 curlen = EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE - 2678 EHCI_PAGE_OFFSET(dataphys); 2679 #ifdef DIAGNOSTIC 2680 if (curlen > len) { 2681 printf("ehci_alloc_sqtd_chain: curlen=0x%x " 2682 "len=0x%x offs=0x%x\n", curlen, len, 2683 EHCI_PAGE_OFFSET(dataphys)); 2684 printf("lastpage=0x%x page=0x%x phys=0x%x\n", 2685 dataphyslastpage, dataphyspage, 2686 dataphys); 2687 curlen = len; 2688 } 2689 #endif 2690 /* the length must be a multiple of the max size */ 2691 curlen -= curlen % mps; 2692 DPRINTFN(1,("ehci_alloc_sqtd_chain: multiple QTDs, " 2693 "curlen=%d\n", curlen)); 2694 #ifdef DIAGNOSTIC 2695 if (curlen == 0) 2696 panic("ehci_alloc_sqtd_chain: curlen == 0"); 2697 #endif 2698 } 2699 DPRINTFN(4,("ehci_alloc_sqtd_chain: dataphys=0x%08x " 2700 "dataphyslastpage=0x%08x len=%d curlen=%d\n", 2701 dataphys, dataphyslastpage, 2702 len, curlen)); 2703 len -= curlen; 2704 2705 /* 2706 * Allocate another transfer if there's more data left, 2707 * or if force last short transfer flag is set and we're 2708 * allocating a multiple of the max packet size. 2709 */ 2710 if (len != 0 || 2711 ((curlen % mps) == 0 && !rd && curlen != 0 && 2712 (flags & USBD_FORCE_SHORT_XFER))) { 2713 next = ehci_alloc_sqtd(sc); 2714 if (next == NULL) 2715 goto nomem; 2716 nextphys = htole32(next->physaddr); 2717 } else { 2718 next = NULL; 2719 nextphys = EHCI_NULL; 2720 } 2721 2722 for (i = 0; i * EHCI_PAGE_SIZE < 2723 curlen + EHCI_PAGE_OFFSET(dataphys); i++) { 2724 ehci_physaddr_t a = dataphys + i * EHCI_PAGE_SIZE; 2725 if (i != 0) /* use offset only in first buffer */ 2726 a = EHCI_PAGE(a); 2727 cur->qtd.qtd_buffer[i] = htole32(a); 2728 cur->qtd.qtd_buffer_hi[i] = 0; 2729 #ifdef DIAGNOSTIC 2730 if (i >= EHCI_QTD_NBUFFERS) { 2731 printf("ehci_alloc_sqtd_chain: i=%d\n", i); 2732 goto nomem; 2733 } 2734 #endif 2735 } 2736 cur->nextqtd = next; 2737 cur->qtd.qtd_next = cur->qtd.qtd_altnext = nextphys; 2738 cur->qtd.qtd_status = 2739 htole32(qtdstatus | EHCI_QTD_SET_BYTES(curlen)); 2740 cur->xfer = xfer; 2741 cur->len = curlen; 2742 2743 DPRINTFN(10,("ehci_alloc_sqtd_chain: cbp=0x%08x end=0x%08x\n", 2744 dataphys, dataphys + curlen)); 2745 /* adjust the toggle based on the number of packets in this 2746 qtd */ 2747 if (((curlen + mps - 1) / mps) & 1) { 2748 tog ^= 1; 2749 qtdstatus ^= EHCI_QTD_TOGGLE_MASK; 2750 } 2751 if (next == NULL) 2752 break; 2753 usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), 2754 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2755 DPRINTFN(10,("ehci_alloc_sqtd_chain: extend chain\n")); 2756 if (len) 2757 dataphys += curlen; 2758 cur = next; 2759 } 2760 cur->qtd.qtd_status |= htole32(EHCI_QTD_IOC); 2761 usb_syncmem(&cur->dma, cur->offs, sizeof(cur->qtd), 2762 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2763 *ep = cur; 2764 epipe->nexttoggle = tog; 2765 2766 DPRINTFN(10,("ehci_alloc_sqtd_chain: return sqtd=%p sqtdend=%p\n", 2767 *sp, *ep)); 2768 2769 return (USBD_NORMAL_COMPLETION); 2770 2771 nomem: 2772 /* XXX free chain */ 2773 DPRINTFN(-1,("ehci_alloc_sqtd_chain: no memory\n")); 2774 return (USBD_NOMEM); 2775 } 2776 2777 Static void 2778 ehci_free_sqtd_chain(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd, 2779 ehci_soft_qtd_t *sqtdend) 2780 { 2781 ehci_soft_qtd_t *p; 2782 int i; 2783 2784 DPRINTFN(10,("ehci_free_sqtd_chain: sqtd=%p sqtdend=%p\n", 2785 sqtd, sqtdend)); 2786 2787 for (i = 0; sqtd != sqtdend; sqtd = p, i++) { 2788 p = sqtd->nextqtd; 2789 ehci_free_sqtd(sc, sqtd); 2790 } 2791 } 2792 2793 Static ehci_soft_itd_t * 2794 ehci_alloc_itd(ehci_softc_t *sc) 2795 { 2796 struct ehci_soft_itd *itd, *freeitd; 2797 usbd_status err; 2798 int i, s, offs, frindex, previndex; 2799 usb_dma_t dma; 2800 2801 s = splusb(); 2802 2803 /* Find an itd that wasn't freed this frame or last frame. This can 2804 * discard itds that were freed before frindex wrapped around 2805 * XXX - can this lead to thrashing? Could fix by enabling wrap-around 2806 * interrupt and fiddling with list when that happens */ 2807 frindex = (EOREAD4(sc, EHCI_FRINDEX) + 1) >> 3; 2808 previndex = (frindex != 0) ? frindex - 1 : sc->sc_flsize; 2809 2810 freeitd = NULL; 2811 LIST_FOREACH(itd, &sc->sc_freeitds, u.free_list) { 2812 if (itd == NULL) 2813 break; 2814 if (itd->slot != frindex && itd->slot != previndex) { 2815 freeitd = itd; 2816 break; 2817 } 2818 } 2819 2820 if (freeitd == NULL) { 2821 DPRINTFN(2, ("ehci_alloc_itd allocating chunk\n")); 2822 err = usb_allocmem(&sc->sc_bus, EHCI_ITD_SIZE * EHCI_ITD_CHUNK, 2823 EHCI_PAGE_SIZE, &dma); 2824 2825 if (err) { 2826 DPRINTF(("ehci_alloc_itd, alloc returned %d\n", err)); 2827 return NULL; 2828 } 2829 2830 for (i = 0; i < EHCI_ITD_CHUNK; i++) { 2831 offs = i * EHCI_ITD_SIZE; 2832 itd = KERNADDR(&dma, offs); 2833 itd->physaddr = DMAADDR(&dma, offs); 2834 itd->dma = dma; 2835 itd->offs = offs; 2836 LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); 2837 } 2838 freeitd = LIST_FIRST(&sc->sc_freeitds); 2839 } 2840 2841 itd = freeitd; 2842 LIST_REMOVE(itd, u.free_list); 2843 memset(&itd->itd, 0, sizeof(ehci_itd_t)); 2844 usb_syncmem(&itd->dma, itd->offs + offsetof(ehci_itd_t, itd_next), 2845 sizeof(itd->itd.itd_next), BUS_DMASYNC_PREWRITE | 2846 BUS_DMASYNC_PREREAD); 2847 2848 itd->u.frame_list.next = NULL; 2849 itd->u.frame_list.prev = NULL; 2850 itd->xfer_next = NULL; 2851 itd->slot = 0; 2852 splx(s); 2853 2854 return itd; 2855 } 2856 2857 Static void 2858 ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd) 2859 { 2860 int s; 2861 2862 s = splusb(); 2863 LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list); 2864 splx(s); 2865 } 2866 2867 /****************/ 2868 2869 /* 2870 * Close a reqular pipe. 2871 * Assumes that there are no pending transactions. 2872 */ 2873 Static void 2874 ehci_close_pipe(usbd_pipe_handle pipe, ehci_soft_qh_t *head) 2875 { 2876 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 2877 ehci_softc_t *sc = pipe->device->bus->hci_private; 2878 ehci_soft_qh_t *sqh = epipe->sqh; 2879 int s; 2880 2881 s = splusb(); 2882 ehci_rem_qh(sc, sqh, head); 2883 splx(s); 2884 ehci_free_sqh(sc, epipe->sqh); 2885 } 2886 2887 /* 2888 * Abort a device request. 2889 * If this routine is called at splusb() it guarantees that the request 2890 * will be removed from the hardware scheduling and that the callback 2891 * for it will be called with USBD_CANCELLED status. 2892 * It's impossible to guarantee that the requested transfer will not 2893 * have happened since the hardware runs concurrently. 2894 * If the transaction has already happened we rely on the ordinary 2895 * interrupt processing to process it. 2896 * XXX This is most probably wrong. 2897 */ 2898 Static void 2899 ehci_abort_xfer(usbd_xfer_handle xfer, usbd_status status) 2900 { 2901 #define exfer EXFER(xfer) 2902 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 2903 ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; 2904 ehci_soft_qh_t *sqh = epipe->sqh; 2905 ehci_soft_qtd_t *sqtd; 2906 ehci_physaddr_t cur; 2907 u_int32_t qhstatus; 2908 int s; 2909 int hit; 2910 int wake; 2911 2912 DPRINTF(("ehci_abort_xfer: xfer=%p pipe=%p\n", xfer, epipe)); 2913 2914 if (sc->sc_dying) { 2915 /* If we're dying, just do the software part. */ 2916 s = splusb(); 2917 xfer->status = status; /* make software ignore it */ 2918 callout_stop(&xfer->timeout_handle); 2919 usb_transfer_complete(xfer); 2920 splx(s); 2921 return; 2922 } 2923 2924 if (xfer->device->bus->intr_context) 2925 panic("ehci_abort_xfer: not in process context"); 2926 2927 /* 2928 * If an abort is already in progress then just wait for it to 2929 * complete and return. 2930 */ 2931 if (xfer->hcflags & UXFER_ABORTING) { 2932 DPRINTFN(2, ("ehci_abort_xfer: already aborting\n")); 2933 #ifdef DIAGNOSTIC 2934 if (status == USBD_TIMEOUT) 2935 printf("ehci_abort_xfer: TIMEOUT while aborting\n"); 2936 #endif 2937 /* Override the status which might be USBD_TIMEOUT. */ 2938 xfer->status = status; 2939 DPRINTFN(2, ("ehci_abort_xfer: waiting for abort to finish\n")); 2940 xfer->hcflags |= UXFER_ABORTWAIT; 2941 while (xfer->hcflags & UXFER_ABORTING) 2942 tsleep(&xfer->hcflags, PZERO, "ehciaw", 0); 2943 return; 2944 } 2945 xfer->hcflags |= UXFER_ABORTING; 2946 2947 /* 2948 * Step 1: Make interrupt routine and hardware ignore xfer. 2949 */ 2950 s = splusb(); 2951 xfer->status = status; /* make software ignore it */ 2952 callout_stop(&xfer->timeout_handle); 2953 2954 usb_syncmem(&sqh->dma, 2955 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 2956 sizeof(sqh->qh.qh_qtd.qtd_status), 2957 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 2958 qhstatus = sqh->qh.qh_qtd.qtd_status; 2959 sqh->qh.qh_qtd.qtd_status = qhstatus | htole32(EHCI_QTD_HALTED); 2960 usb_syncmem(&sqh->dma, 2961 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 2962 sizeof(sqh->qh.qh_qtd.qtd_status), 2963 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2964 for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { 2965 usb_syncmem(&sqtd->dma, 2966 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 2967 sizeof(sqtd->qtd.qtd_status), 2968 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 2969 sqtd->qtd.qtd_status |= htole32(EHCI_QTD_HALTED); 2970 usb_syncmem(&sqtd->dma, 2971 sqtd->offs + offsetof(ehci_qtd_t, qtd_status), 2972 sizeof(sqtd->qtd.qtd_status), 2973 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2974 if (sqtd == exfer->sqtdend) 2975 break; 2976 } 2977 splx(s); 2978 2979 /* 2980 * Step 2: Wait until we know hardware has finished any possible 2981 * use of the xfer. Also make sure the soft interrupt routine 2982 * has run. 2983 */ 2984 ehci_sync_hc(sc); 2985 s = splusb(); 2986 #ifdef USB_USE_SOFTINTR 2987 sc->sc_softwake = 1; 2988 #endif /* USB_USE_SOFTINTR */ 2989 usb_schedsoftintr(&sc->sc_bus); 2990 #ifdef USB_USE_SOFTINTR 2991 tsleep(&sc->sc_softwake, PZERO, "ehciab", 0); 2992 #endif /* USB_USE_SOFTINTR */ 2993 splx(s); 2994 2995 /* 2996 * Step 3: Remove any vestiges of the xfer from the hardware. 2997 * The complication here is that the hardware may have executed 2998 * beyond the xfer we're trying to abort. So as we're scanning 2999 * the TDs of this xfer we check if the hardware points to 3000 * any of them. 3001 */ 3002 s = splusb(); /* XXX why? */ 3003 3004 usb_syncmem(&sqh->dma, 3005 sqh->offs + offsetof(ehci_qh_t, qh_curqtd), 3006 sizeof(sqh->qh.qh_curqtd), 3007 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3008 cur = EHCI_LINK_ADDR(le32toh(sqh->qh.qh_curqtd)); 3009 hit = 0; 3010 for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) { 3011 hit |= cur == sqtd->physaddr; 3012 if (sqtd == exfer->sqtdend) 3013 break; 3014 } 3015 sqtd = sqtd->nextqtd; 3016 /* Zap curqtd register if hardware pointed inside the xfer. */ 3017 if (hit && sqtd != NULL) { 3018 DPRINTFN(1,("ehci_abort_xfer: cur=0x%08x\n", sqtd->physaddr)); 3019 sqh->qh.qh_curqtd = htole32(sqtd->physaddr); /* unlink qTDs */ 3020 usb_syncmem(&sqh->dma, 3021 sqh->offs + offsetof(ehci_qh_t, qh_curqtd), 3022 sizeof(sqh->qh.qh_curqtd), 3023 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3024 sqh->qh.qh_qtd.qtd_status = qhstatus; 3025 usb_syncmem(&sqh->dma, 3026 sqh->offs + offsetof(ehci_qh_t, qh_qtd.qtd_status), 3027 sizeof(sqh->qh.qh_qtd.qtd_status), 3028 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3029 } else { 3030 DPRINTFN(1,("ehci_abort_xfer: no hit\n")); 3031 } 3032 3033 /* 3034 * Step 4: Execute callback. 3035 */ 3036 #ifdef DIAGNOSTIC 3037 exfer->isdone = 1; 3038 #endif 3039 wake = xfer->hcflags & UXFER_ABORTWAIT; 3040 xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); 3041 usb_transfer_complete(xfer); 3042 if (wake) 3043 wakeup(&xfer->hcflags); 3044 3045 splx(s); 3046 #undef exfer 3047 } 3048 3049 Static void 3050 ehci_abort_isoc_xfer(usbd_xfer_handle xfer, usbd_status status) 3051 { 3052 ehci_isoc_trans_t trans_status; 3053 struct ehci_pipe *epipe; 3054 struct ehci_xfer *exfer; 3055 ehci_softc_t *sc; 3056 struct ehci_soft_itd *itd; 3057 int s, i, wake; 3058 3059 epipe = (struct ehci_pipe *) xfer->pipe; 3060 exfer = EXFER(xfer); 3061 sc = epipe->pipe.device->bus->hci_private; 3062 3063 DPRINTF(("ehci_abort_isoc_xfer: xfer %p pipe %p\n", xfer, epipe)); 3064 3065 if (sc->sc_dying) { 3066 s = splusb(); 3067 xfer->status = status; 3068 callout_stop(&xfer->timeout_handle); 3069 usb_transfer_complete(xfer); 3070 splx(s); 3071 return; 3072 } 3073 3074 if (xfer->hcflags & UXFER_ABORTING) { 3075 DPRINTFN(2, ("ehci_abort_isoc_xfer: already aborting\n")); 3076 3077 #ifdef DIAGNOSTIC 3078 if (status == USBD_TIMEOUT) 3079 printf("ehci_abort_xfer: TIMEOUT while aborting\n"); 3080 #endif 3081 3082 xfer->status = status; 3083 DPRINTFN(2, ("ehci_abort_xfer: waiting for abort to finish\n")); 3084 xfer->hcflags |= UXFER_ABORTWAIT; 3085 while (xfer->hcflags & UXFER_ABORTING) 3086 tsleep(&xfer->hcflags, PZERO, "ehciiaw", 0); 3087 return; 3088 } 3089 xfer->hcflags |= UXFER_ABORTING; 3090 3091 xfer->status = status; 3092 callout_stop(&xfer->timeout_handle); 3093 3094 s = splusb(); 3095 for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) { 3096 usb_syncmem(&itd->dma, 3097 itd->offs + offsetof(ehci_itd_t, itd_ctl), 3098 sizeof(itd->itd.itd_ctl), 3099 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 3100 3101 for (i = 0; i < 8; i++) { 3102 trans_status = le32toh(itd->itd.itd_ctl[i]); 3103 trans_status &= ~EHCI_ITD_ACTIVE; 3104 itd->itd.itd_ctl[i] = htole32(trans_status); 3105 } 3106 3107 usb_syncmem(&itd->dma, 3108 itd->offs + offsetof(ehci_itd_t, itd_ctl), 3109 sizeof(itd->itd.itd_ctl), 3110 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3111 } 3112 splx(s); 3113 3114 s = splusb(); 3115 #ifdef USB_USE_SOFTINTR 3116 sc->sc_softwake = 1; 3117 #endif /* USB_USE_SOFTINTR */ 3118 usb_schedsoftintr(&sc->sc_bus); 3119 #ifdef USB_USE_SOFTINTR 3120 tsleep(&sc->sc_softwake, PZERO, "ehciab", 0); 3121 #endif /* USB_USE_SOFTINTR */ 3122 splx(s); 3123 3124 #ifdef DIAGNOSTIC 3125 exfer->isdone = 1; 3126 #endif 3127 wake = xfer->hcflags & UXFER_ABORTWAIT; 3128 xfer->hcflags &= ~(UXFER_ABORTING | UXFER_ABORTWAIT); 3129 usb_transfer_complete(xfer); 3130 if (wake) 3131 wakeup(&xfer->hcflags); 3132 3133 return; 3134 } 3135 3136 Static void 3137 ehci_timeout(void *addr) 3138 { 3139 struct ehci_xfer *exfer = addr; 3140 struct ehci_pipe *epipe = (struct ehci_pipe *)exfer->xfer.pipe; 3141 ehci_softc_t *sc = epipe->pipe.device->bus->hci_private; 3142 3143 DPRINTF(("ehci_timeout: exfer=%p\n", exfer)); 3144 #ifdef EHCI_DEBUG 3145 if (ehcidebug > 1) 3146 usbd_dump_pipe(exfer->xfer.pipe); 3147 #endif 3148 3149 if (sc->sc_dying) { 3150 ehci_abort_xfer(&exfer->xfer, USBD_TIMEOUT); 3151 return; 3152 } 3153 3154 /* Execute the abort in a process context. */ 3155 usb_init_task(&exfer->abort_task, ehci_timeout_task, addr); 3156 usb_add_task(exfer->xfer.pipe->device, &exfer->abort_task, 3157 USB_TASKQ_HC); 3158 } 3159 3160 Static void 3161 ehci_timeout_task(void *addr) 3162 { 3163 usbd_xfer_handle xfer = addr; 3164 int s; 3165 3166 DPRINTF(("ehci_timeout_task: xfer=%p\n", xfer)); 3167 3168 s = splusb(); 3169 ehci_abort_xfer(xfer, USBD_TIMEOUT); 3170 splx(s); 3171 } 3172 3173 /************************/ 3174 3175 Static usbd_status 3176 ehci_device_ctrl_transfer(usbd_xfer_handle xfer) 3177 { 3178 usbd_status err; 3179 3180 /* Insert last in queue. */ 3181 err = usb_insert_transfer(xfer); 3182 if (err) 3183 return (err); 3184 3185 /* Pipe isn't running, start first */ 3186 return (ehci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3187 } 3188 3189 Static usbd_status 3190 ehci_device_ctrl_start(usbd_xfer_handle xfer) 3191 { 3192 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3193 usbd_status err; 3194 3195 if (sc->sc_dying) 3196 return (USBD_IOERROR); 3197 3198 #ifdef DIAGNOSTIC 3199 if (!(xfer->rqflags & URQ_REQUEST)) { 3200 /* XXX panic */ 3201 printf("ehci_device_ctrl_transfer: not a request\n"); 3202 return (USBD_INVAL); 3203 } 3204 #endif 3205 3206 err = ehci_device_request(xfer); 3207 if (err) 3208 return (err); 3209 3210 if (sc->sc_bus.use_polling) 3211 ehci_waitintr(sc, xfer); 3212 return (USBD_IN_PROGRESS); 3213 } 3214 3215 Static void 3216 ehci_device_ctrl_done(usbd_xfer_handle xfer) 3217 { 3218 struct ehci_xfer *ex = EXFER(xfer); 3219 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3220 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3221 usb_device_request_t *req = &xfer->request; 3222 int len = UGETW(req->wLength); 3223 int rd = req->bmRequestType & UT_READ; 3224 3225 DPRINTFN(10,("ehci_ctrl_done: xfer=%p\n", xfer)); 3226 3227 #ifdef DIAGNOSTIC 3228 if (!(xfer->rqflags & URQ_REQUEST)) { 3229 panic("ehci_ctrl_done: not a request"); 3230 } 3231 #endif 3232 3233 mutex_enter(&sc->sc_intrhead_lock); 3234 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3235 ehci_del_intr_list(sc, ex); /* remove from active list */ 3236 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3237 usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, 3238 BUS_DMASYNC_POSTWRITE); 3239 if (len) 3240 usb_syncmem(&xfer->dmabuf, 0, len, 3241 rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3242 } 3243 mutex_exit(&sc->sc_intrhead_lock); 3244 3245 DPRINTFN(5, ("ehci_ctrl_done: length=%d\n", xfer->actlen)); 3246 } 3247 3248 /* Abort a device control request. */ 3249 Static void 3250 ehci_device_ctrl_abort(usbd_xfer_handle xfer) 3251 { 3252 DPRINTF(("ehci_device_ctrl_abort: xfer=%p\n", xfer)); 3253 ehci_abort_xfer(xfer, USBD_CANCELLED); 3254 } 3255 3256 /* Close a device control pipe. */ 3257 Static void 3258 ehci_device_ctrl_close(usbd_pipe_handle pipe) 3259 { 3260 ehci_softc_t *sc = pipe->device->bus->hci_private; 3261 /*struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;*/ 3262 3263 DPRINTF(("ehci_device_ctrl_close: pipe=%p\n", pipe)); 3264 ehci_close_pipe(pipe, sc->sc_async_head); 3265 } 3266 3267 Static usbd_status 3268 ehci_device_request(usbd_xfer_handle xfer) 3269 { 3270 #define exfer EXFER(xfer) 3271 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3272 usb_device_request_t *req = &xfer->request; 3273 usbd_device_handle dev = epipe->pipe.device; 3274 ehci_softc_t *sc = dev->bus->hci_private; 3275 int addr = dev->address; 3276 ehci_soft_qtd_t *setup, *stat, *next; 3277 ehci_soft_qh_t *sqh; 3278 int isread; 3279 int len; 3280 usbd_status err; 3281 int s; 3282 3283 isread = req->bmRequestType & UT_READ; 3284 len = UGETW(req->wLength); 3285 3286 DPRINTFN(3,("ehci_device_request: type=0x%02x, request=0x%02x, " 3287 "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n", 3288 req->bmRequestType, req->bRequest, UGETW(req->wValue), 3289 UGETW(req->wIndex), len, addr, 3290 epipe->pipe.endpoint->edesc->bEndpointAddress)); 3291 3292 setup = ehci_alloc_sqtd(sc); 3293 if (setup == NULL) { 3294 err = USBD_NOMEM; 3295 goto bad1; 3296 } 3297 stat = ehci_alloc_sqtd(sc); 3298 if (stat == NULL) { 3299 err = USBD_NOMEM; 3300 goto bad2; 3301 } 3302 3303 sqh = epipe->sqh; 3304 epipe->u.ctl.length = len; 3305 3306 /* Update device address and length since they may have changed 3307 during the setup of the control pipe in usbd_new_device(). */ 3308 /* XXX This only needs to be done once, but it's too early in open. */ 3309 /* XXXX Should not touch ED here! */ 3310 sqh->qh.qh_endp = 3311 (sqh->qh.qh_endp & htole32(~(EHCI_QH_ADDRMASK | EHCI_QH_MPLMASK))) | 3312 htole32( 3313 EHCI_QH_SET_ADDR(addr) | 3314 EHCI_QH_SET_MPL(UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize)) 3315 ); 3316 3317 /* Set up data transaction */ 3318 if (len != 0) { 3319 ehci_soft_qtd_t *end; 3320 3321 /* Start toggle at 1. */ 3322 epipe->nexttoggle = 1; 3323 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, 3324 &next, &end); 3325 if (err) 3326 goto bad3; 3327 end->qtd.qtd_status &= htole32(~EHCI_QTD_IOC); 3328 end->nextqtd = stat; 3329 end->qtd.qtd_next = 3330 end->qtd.qtd_altnext = htole32(stat->physaddr); 3331 usb_syncmem(&end->dma, end->offs, sizeof(end->qtd), 3332 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3333 } else { 3334 next = stat; 3335 } 3336 3337 memcpy(KERNADDR(&epipe->u.ctl.reqdma, 0), req, sizeof *req); 3338 usb_syncmem(&epipe->u.ctl.reqdma, 0, sizeof *req, BUS_DMASYNC_PREWRITE); 3339 3340 /* Clear toggle */ 3341 setup->qtd.qtd_status = htole32( 3342 EHCI_QTD_ACTIVE | 3343 EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) | 3344 EHCI_QTD_SET_CERR(3) | 3345 EHCI_QTD_SET_TOGGLE(0) | 3346 EHCI_QTD_SET_BYTES(sizeof *req) 3347 ); 3348 setup->qtd.qtd_buffer[0] = htole32(DMAADDR(&epipe->u.ctl.reqdma, 0)); 3349 setup->qtd.qtd_buffer_hi[0] = 0; 3350 setup->nextqtd = next; 3351 setup->qtd.qtd_next = setup->qtd.qtd_altnext = htole32(next->physaddr); 3352 setup->xfer = xfer; 3353 setup->len = sizeof *req; 3354 usb_syncmem(&setup->dma, setup->offs, sizeof(setup->qtd), 3355 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3356 3357 stat->qtd.qtd_status = htole32( 3358 EHCI_QTD_ACTIVE | 3359 EHCI_QTD_SET_PID(isread ? EHCI_QTD_PID_OUT : EHCI_QTD_PID_IN) | 3360 EHCI_QTD_SET_CERR(3) | 3361 EHCI_QTD_SET_TOGGLE(1) | 3362 EHCI_QTD_IOC 3363 ); 3364 stat->qtd.qtd_buffer[0] = 0; /* XXX not needed? */ 3365 stat->qtd.qtd_buffer_hi[0] = 0; /* XXX not needed? */ 3366 stat->nextqtd = NULL; 3367 stat->qtd.qtd_next = stat->qtd.qtd_altnext = EHCI_NULL; 3368 stat->xfer = xfer; 3369 stat->len = 0; 3370 usb_syncmem(&stat->dma, stat->offs, sizeof(stat->qtd), 3371 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3372 3373 #ifdef EHCI_DEBUG 3374 if (ehcidebug > 5) { 3375 DPRINTF(("ehci_device_request:\n")); 3376 ehci_dump_sqh(sqh); 3377 ehci_dump_sqtds(setup); 3378 } 3379 #endif 3380 3381 exfer->sqtdstart = setup; 3382 exfer->sqtdend = stat; 3383 #ifdef DIAGNOSTIC 3384 if (!exfer->isdone) { 3385 printf("ehci_device_request: not done, exfer=%p\n", exfer); 3386 } 3387 exfer->isdone = 0; 3388 #endif 3389 3390 /* Insert qTD in QH list. */ 3391 s = splusb(); 3392 ehci_set_qh_qtd(sqh, setup); /* also does usb_syncmem(sqh) */ 3393 if (xfer->timeout && !sc->sc_bus.use_polling) { 3394 callout_reset(&(xfer->timeout_handle), (mstohz(xfer->timeout)), 3395 (ehci_timeout), (xfer)); 3396 } 3397 mutex_enter(&sc->sc_intrhead_lock); 3398 ehci_add_intr_list(sc, exfer); 3399 mutex_exit(&sc->sc_intrhead_lock); 3400 xfer->status = USBD_IN_PROGRESS; 3401 splx(s); 3402 3403 #ifdef EHCI_DEBUG 3404 if (ehcidebug > 10) { 3405 DPRINTF(("ehci_device_request: status=%x\n", 3406 EOREAD4(sc, EHCI_USBSTS))); 3407 delay(10000); 3408 ehci_dump_regs(sc); 3409 ehci_dump_sqh(sc->sc_async_head); 3410 ehci_dump_sqh(sqh); 3411 ehci_dump_sqtds(setup); 3412 } 3413 #endif 3414 3415 return (USBD_NORMAL_COMPLETION); 3416 3417 bad3: 3418 ehci_free_sqtd(sc, stat); 3419 bad2: 3420 ehci_free_sqtd(sc, setup); 3421 bad1: 3422 DPRINTFN(-1,("ehci_device_request: no memory\n")); 3423 xfer->status = err; 3424 usb_transfer_complete(xfer); 3425 return (err); 3426 #undef exfer 3427 } 3428 3429 /* 3430 * Some EHCI chips from VIA seem to trigger interrupts before writing back the 3431 * qTD status, or miss signalling occasionally under heavy load. If the host 3432 * machine is too fast, we we can miss transaction completion - when we scan 3433 * the active list the transaction still seems to be active. This generally 3434 * exhibits itself as a umass stall that never recovers. 3435 * 3436 * We work around this behaviour by setting up this callback after any softintr 3437 * that completes with transactions still pending, giving us another chance to 3438 * check for completion after the writeback has taken place. 3439 */ 3440 Static void 3441 ehci_intrlist_timeout(void *arg) 3442 { 3443 ehci_softc_t *sc = arg; 3444 int s = splusb(); 3445 3446 DPRINTF(("ehci_intrlist_timeout\n")); 3447 usb_schedsoftintr(&sc->sc_bus); 3448 3449 splx(s); 3450 } 3451 3452 /************************/ 3453 3454 Static usbd_status 3455 ehci_device_bulk_transfer(usbd_xfer_handle xfer) 3456 { 3457 usbd_status err; 3458 3459 /* Insert last in queue. */ 3460 err = usb_insert_transfer(xfer); 3461 if (err) 3462 return (err); 3463 3464 /* Pipe isn't running, start first */ 3465 return (ehci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3466 } 3467 3468 Static usbd_status 3469 ehci_device_bulk_start(usbd_xfer_handle xfer) 3470 { 3471 #define exfer EXFER(xfer) 3472 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3473 usbd_device_handle dev = epipe->pipe.device; 3474 ehci_softc_t *sc = dev->bus->hci_private; 3475 ehci_soft_qtd_t *data, *dataend; 3476 ehci_soft_qh_t *sqh; 3477 usbd_status err; 3478 int len, isread, endpt; 3479 int s; 3480 3481 DPRINTFN(2, ("ehci_device_bulk_start: xfer=%p len=%d flags=%d\n", 3482 xfer, xfer->length, xfer->flags)); 3483 3484 if (sc->sc_dying) 3485 return (USBD_IOERROR); 3486 3487 #ifdef DIAGNOSTIC 3488 if (xfer->rqflags & URQ_REQUEST) 3489 panic("ehci_device_bulk_start: a request"); 3490 #endif 3491 3492 len = xfer->length; 3493 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3494 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3495 sqh = epipe->sqh; 3496 3497 epipe->u.bulk.length = len; 3498 3499 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, 3500 &dataend); 3501 if (err) { 3502 DPRINTFN(-1,("ehci_device_bulk_transfer: no memory\n")); 3503 xfer->status = err; 3504 usb_transfer_complete(xfer); 3505 return (err); 3506 } 3507 3508 #ifdef EHCI_DEBUG 3509 if (ehcidebug > 5) { 3510 DPRINTF(("ehci_device_bulk_start: data(1)\n")); 3511 ehci_dump_sqh(sqh); 3512 ehci_dump_sqtds(data); 3513 } 3514 #endif 3515 3516 /* Set up interrupt info. */ 3517 exfer->sqtdstart = data; 3518 exfer->sqtdend = dataend; 3519 #ifdef DIAGNOSTIC 3520 if (!exfer->isdone) { 3521 printf("ehci_device_bulk_start: not done, ex=%p\n", exfer); 3522 } 3523 exfer->isdone = 0; 3524 #endif 3525 3526 s = splusb(); 3527 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3528 if (xfer->timeout && !sc->sc_bus.use_polling) { 3529 callout_reset(&(xfer->timeout_handle), (mstohz(xfer->timeout)), 3530 (ehci_timeout), (xfer)); 3531 } 3532 mutex_enter(&sc->sc_intrhead_lock); 3533 ehci_add_intr_list(sc, exfer); 3534 mutex_exit(&sc->sc_intrhead_lock); 3535 xfer->status = USBD_IN_PROGRESS; 3536 splx(s); 3537 3538 #ifdef EHCI_DEBUG 3539 if (ehcidebug > 10) { 3540 DPRINTF(("ehci_device_bulk_start: data(2)\n")); 3541 delay(10000); 3542 DPRINTF(("ehci_device_bulk_start: data(3)\n")); 3543 ehci_dump_regs(sc); 3544 #if 0 3545 printf("async_head:\n"); 3546 ehci_dump_sqh(sc->sc_async_head); 3547 #endif 3548 printf("sqh:\n"); 3549 ehci_dump_sqh(sqh); 3550 ehci_dump_sqtds(data); 3551 } 3552 #endif 3553 3554 if (sc->sc_bus.use_polling) 3555 ehci_waitintr(sc, xfer); 3556 3557 return (USBD_IN_PROGRESS); 3558 #undef exfer 3559 } 3560 3561 Static void 3562 ehci_device_bulk_abort(usbd_xfer_handle xfer) 3563 { 3564 DPRINTF(("ehci_device_bulk_abort: xfer=%p\n", xfer)); 3565 ehci_abort_xfer(xfer, USBD_CANCELLED); 3566 } 3567 3568 /* 3569 * Close a device bulk pipe. 3570 */ 3571 Static void 3572 ehci_device_bulk_close(usbd_pipe_handle pipe) 3573 { 3574 ehci_softc_t *sc = pipe->device->bus->hci_private; 3575 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 3576 3577 DPRINTF(("ehci_device_bulk_close: pipe=%p\n", pipe)); 3578 pipe->endpoint->datatoggle = epipe->nexttoggle; 3579 ehci_close_pipe(pipe, sc->sc_async_head); 3580 } 3581 3582 Static void 3583 ehci_device_bulk_done(usbd_xfer_handle xfer) 3584 { 3585 struct ehci_xfer *ex = EXFER(xfer); 3586 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3587 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3588 int endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3589 int rd = UE_GET_DIR(endpt) == UE_DIR_IN; 3590 3591 DPRINTFN(10,("ehci_bulk_done: xfer=%p, actlen=%d\n", 3592 xfer, xfer->actlen)); 3593 3594 mutex_enter(&sc->sc_intrhead_lock); 3595 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3596 ehci_del_intr_list(sc, ex); /* remove from active list */ 3597 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3598 usb_syncmem(&xfer->dmabuf, 0, xfer->length, 3599 rd ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3600 } 3601 mutex_exit(&sc->sc_intrhead_lock); 3602 3603 DPRINTFN(5, ("ehci_bulk_done: length=%d\n", xfer->actlen)); 3604 } 3605 3606 /************************/ 3607 3608 Static usbd_status 3609 ehci_device_setintr(ehci_softc_t *sc, ehci_soft_qh_t *sqh, int ival) 3610 { 3611 struct ehci_soft_islot *isp; 3612 int islot, lev; 3613 3614 /* Find a poll rate that is large enough. */ 3615 for (lev = EHCI_IPOLLRATES - 1; lev > 0; lev--) 3616 if (EHCI_ILEV_IVAL(lev) <= ival) 3617 break; 3618 3619 /* Pick an interrupt slot at the right level. */ 3620 /* XXX could do better than picking at random */ 3621 sc->sc_rand = (sc->sc_rand + 191) % sc->sc_flsize; 3622 islot = EHCI_IQHIDX(lev, sc->sc_rand); 3623 3624 sqh->islot = islot; 3625 isp = &sc->sc_islots[islot]; 3626 ehci_add_qh(sqh, isp->sqh); 3627 3628 return (USBD_NORMAL_COMPLETION); 3629 } 3630 3631 Static usbd_status 3632 ehci_device_intr_transfer(usbd_xfer_handle xfer) 3633 { 3634 usbd_status err; 3635 3636 /* Insert last in queue. */ 3637 err = usb_insert_transfer(xfer); 3638 if (err) 3639 return (err); 3640 3641 /* 3642 * Pipe isn't running (otherwise err would be USBD_INPROG), 3643 * so start it first. 3644 */ 3645 return (ehci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 3646 } 3647 3648 Static usbd_status 3649 ehci_device_intr_start(usbd_xfer_handle xfer) 3650 { 3651 #define exfer EXFER(xfer) 3652 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3653 usbd_device_handle dev = xfer->pipe->device; 3654 ehci_softc_t *sc = dev->bus->hci_private; 3655 ehci_soft_qtd_t *data, *dataend; 3656 ehci_soft_qh_t *sqh; 3657 usbd_status err; 3658 int len, isread, endpt; 3659 int s; 3660 3661 DPRINTFN(2, ("ehci_device_intr_start: xfer=%p len=%d flags=%d\n", 3662 xfer, xfer->length, xfer->flags)); 3663 3664 if (sc->sc_dying) 3665 return (USBD_IOERROR); 3666 3667 #ifdef DIAGNOSTIC 3668 if (xfer->rqflags & URQ_REQUEST) 3669 panic("ehci_device_intr_start: a request"); 3670 #endif 3671 3672 len = xfer->length; 3673 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3674 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3675 sqh = epipe->sqh; 3676 3677 epipe->u.intr.length = len; 3678 3679 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data, 3680 &dataend); 3681 if (err) { 3682 DPRINTFN(-1, ("ehci_device_intr_start: no memory\n")); 3683 xfer->status = err; 3684 usb_transfer_complete(xfer); 3685 return (err); 3686 } 3687 3688 #ifdef EHCI_DEBUG 3689 if (ehcidebug > 5) { 3690 DPRINTF(("ehci_device_intr_start: data(1)\n")); 3691 ehci_dump_sqh(sqh); 3692 ehci_dump_sqtds(data); 3693 } 3694 #endif 3695 3696 /* Set up interrupt info. */ 3697 exfer->sqtdstart = data; 3698 exfer->sqtdend = dataend; 3699 #ifdef DIAGNOSTIC 3700 if (!exfer->isdone) { 3701 printf("ehci_device_intr_start: not done, ex=%p\n", exfer); 3702 } 3703 exfer->isdone = 0; 3704 #endif 3705 3706 s = splusb(); 3707 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3708 if (xfer->timeout && !sc->sc_bus.use_polling) { 3709 callout_reset(&(xfer->timeout_handle), (mstohz(xfer->timeout)), 3710 (ehci_timeout), (xfer)); 3711 } 3712 mutex_enter(&sc->sc_intrhead_lock); 3713 ehci_add_intr_list(sc, exfer); 3714 mutex_exit(&sc->sc_intrhead_lock); 3715 xfer->status = USBD_IN_PROGRESS; 3716 splx(s); 3717 3718 #ifdef EHCI_DEBUG 3719 if (ehcidebug > 10) { 3720 DPRINTF(("ehci_device_intr_start: data(2)\n")); 3721 delay(10000); 3722 DPRINTF(("ehci_device_intr_start: data(3)\n")); 3723 ehci_dump_regs(sc); 3724 printf("sqh:\n"); 3725 ehci_dump_sqh(sqh); 3726 ehci_dump_sqtds(data); 3727 } 3728 #endif 3729 3730 if (sc->sc_bus.use_polling) 3731 ehci_waitintr(sc, xfer); 3732 3733 return (USBD_IN_PROGRESS); 3734 #undef exfer 3735 } 3736 3737 Static void 3738 ehci_device_intr_abort(usbd_xfer_handle xfer) 3739 { 3740 DPRINTFN(1, ("ehci_device_intr_abort: xfer=%p\n", xfer)); 3741 if (xfer->pipe->intrxfer == xfer) { 3742 DPRINTFN(1, ("echi_device_intr_abort: remove\n")); 3743 xfer->pipe->intrxfer = NULL; 3744 } 3745 /* 3746 * XXX - abort_xfer uses ehci_sync_hc, which syncs via the advance 3747 * async doorbell. That's dependent on the async list, wheras 3748 * intr xfers are periodic, should not use this? 3749 */ 3750 ehci_abort_xfer(xfer, USBD_CANCELLED); 3751 } 3752 3753 Static void 3754 ehci_device_intr_close(usbd_pipe_handle pipe) 3755 { 3756 ehci_softc_t *sc = pipe->device->bus->hci_private; 3757 struct ehci_pipe *epipe = (struct ehci_pipe *)pipe; 3758 struct ehci_soft_islot *isp; 3759 3760 isp = &sc->sc_islots[epipe->sqh->islot]; 3761 ehci_close_pipe(pipe, isp->sqh); 3762 } 3763 3764 Static void 3765 ehci_device_intr_done(usbd_xfer_handle xfer) 3766 { 3767 #define exfer EXFER(xfer) 3768 struct ehci_xfer *ex = EXFER(xfer); 3769 ehci_softc_t *sc = xfer->pipe->device->bus->hci_private; 3770 struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe; 3771 ehci_soft_qtd_t *data, *dataend; 3772 ehci_soft_qh_t *sqh; 3773 usbd_status err; 3774 int len, isread, endpt, s; 3775 3776 DPRINTFN(10, ("ehci_device_intr_done: xfer=%p, actlen=%d\n", 3777 xfer, xfer->actlen)); 3778 3779 mutex_enter(&sc->sc_intrhead_lock); 3780 if (xfer->pipe->repeat) { 3781 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3782 3783 len = epipe->u.intr.length; 3784 xfer->length = len; 3785 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3786 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3787 usb_syncmem(&xfer->dmabuf, 0, len, 3788 isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3789 sqh = epipe->sqh; 3790 3791 err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, 3792 &data, &dataend); 3793 if (err) { 3794 DPRINTFN(-1, ("ehci_device_intr_done: no memory\n")); 3795 xfer->status = err; 3796 mutex_exit(&sc->sc_intrhead_lock); 3797 return; 3798 } 3799 3800 /* Set up interrupt info. */ 3801 exfer->sqtdstart = data; 3802 exfer->sqtdend = dataend; 3803 #ifdef DIAGNOSTIC 3804 if (!exfer->isdone) { 3805 printf("ehci_device_intr_done: not done, ex=%p\n", 3806 exfer); 3807 } 3808 exfer->isdone = 0; 3809 #endif 3810 3811 s = splusb(); 3812 ehci_set_qh_qtd(sqh, data); /* also does usb_syncmem(sqh) */ 3813 if (xfer->timeout && !sc->sc_bus.use_polling) { 3814 callout_reset(&(xfer->timeout_handle), 3815 (mstohz(xfer->timeout)), (ehci_timeout), (xfer)); 3816 } 3817 splx(s); 3818 3819 xfer->status = USBD_IN_PROGRESS; 3820 } else if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) { 3821 ehci_del_intr_list(sc, ex); /* remove from active list */ 3822 ehci_free_sqtd_chain(sc, ex->sqtdstart, NULL); 3823 endpt = epipe->pipe.endpoint->edesc->bEndpointAddress; 3824 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 3825 usb_syncmem(&xfer->dmabuf, 0, xfer->length, 3826 isread ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 3827 } 3828 mutex_exit(&sc->sc_intrhead_lock); 3829 #undef exfer 3830 } 3831 3832 /************************/ 3833 3834 Static usbd_status 3835 ehci_device_isoc_transfer(usbd_xfer_handle xfer) 3836 { 3837 usbd_status err; 3838 3839 err = usb_insert_transfer(xfer); 3840 if (err && err != USBD_IN_PROGRESS) 3841 return err; 3842 3843 return ehci_device_isoc_start(xfer); 3844 } 3845 3846 Static usbd_status 3847 ehci_device_isoc_start(usbd_xfer_handle xfer) 3848 { 3849 struct ehci_pipe *epipe; 3850 usbd_device_handle dev; 3851 ehci_softc_t *sc; 3852 struct ehci_xfer *exfer; 3853 ehci_soft_itd_t *itd, *prev, *start, *stop; 3854 usb_dma_t *dma_buf; 3855 int i, j, k, frames, uframes, ufrperframe; 3856 int s, trans_count, offs, total_length; 3857 int frindex; 3858 3859 start = NULL; 3860 prev = NULL; 3861 itd = NULL; 3862 trans_count = 0; 3863 total_length = 0; 3864 exfer = (struct ehci_xfer *) xfer; 3865 sc = xfer->pipe->device->bus->hci_private; 3866 dev = xfer->pipe->device; 3867 epipe = (struct ehci_pipe *)xfer->pipe; 3868 3869 /* 3870 * To allow continuous transfers, above we start all transfers 3871 * immediately. However, we're still going to get usbd_start_next call 3872 * this when another xfer completes. So, check if this is already 3873 * in progress or not 3874 */ 3875 3876 if (exfer->itdstart != NULL) 3877 return USBD_IN_PROGRESS; 3878 3879 DPRINTFN(2, ("ehci_device_isoc_start: xfer %p len %d flags %d\n", 3880 xfer, xfer->length, xfer->flags)); 3881 3882 if (sc->sc_dying) 3883 return USBD_IOERROR; 3884 3885 /* 3886 * To avoid complication, don't allow a request right now that'll span 3887 * the entire frame table. To within 4 frames, to allow some leeway 3888 * on either side of where the hc currently is. 3889 */ 3890 if ((1 << (epipe->pipe.endpoint->edesc->bInterval)) * 3891 xfer->nframes >= (sc->sc_flsize - 4) * 8) { 3892 printf("ehci: isoc descriptor requested that spans the entire frametable, too many frames\n"); 3893 return USBD_INVAL; 3894 } 3895 3896 #ifdef DIAGNOSTIC 3897 if (xfer->rqflags & URQ_REQUEST) 3898 panic("ehci_device_isoc_start: request\n"); 3899 3900 if (!exfer->isdone) 3901 printf("ehci_device_isoc_start: not done, ex = %p\n", exfer); 3902 exfer->isdone = 0; 3903 #endif 3904 3905 /* 3906 * Step 1: Allocate and initialize itds, how many do we need? 3907 * One per transfer if interval >= 8 microframes, fewer if we use 3908 * multiple microframes per frame. 3909 */ 3910 3911 i = epipe->pipe.endpoint->edesc->bInterval; 3912 if (i > 16 || i == 0) { 3913 /* Spec page 271 says intervals > 16 are invalid */ 3914 DPRINTF(("ehci_device_isoc_start: bInvertal %d invalid\n", i)); 3915 return USBD_INVAL; 3916 } 3917 3918 ufrperframe = max(1, USB_UFRAMES_PER_FRAME / (1 << (i - 1))); 3919 frames = (xfer->nframes + (ufrperframe - 1)) / ufrperframe; 3920 uframes = USB_UFRAMES_PER_FRAME / ufrperframe; 3921 3922 if (frames == 0) { 3923 DPRINTF(("ehci_device_isoc_start: frames == 0\n")); 3924 return USBD_INVAL; 3925 } 3926 3927 dma_buf = &xfer->dmabuf; 3928 offs = 0; 3929 3930 for (i = 0; i < frames; i++) { 3931 int froffs = offs; 3932 itd = ehci_alloc_itd(sc); 3933 3934 if (prev != NULL) { 3935 prev->itd.itd_next = 3936 htole32(itd->physaddr | EHCI_LINK_ITD); 3937 usb_syncmem(&itd->dma, 3938 itd->offs + offsetof(ehci_itd_t, itd_next), 3939 sizeof(itd->itd.itd_next), BUS_DMASYNC_POSTWRITE); 3940 3941 prev->xfer_next = itd; 3942 } else { 3943 start = itd; 3944 } 3945 3946 /* 3947 * Step 1.5, initialize uframes 3948 */ 3949 for (j = 0; j < EHCI_ITD_NUFRAMES; j += uframes) { 3950 /* Calculate which page in the list this starts in */ 3951 int addr = DMAADDR(dma_buf, froffs); 3952 addr = EHCI_PAGE_OFFSET(addr); 3953 addr += (offs - froffs); 3954 addr = EHCI_PAGE(addr); 3955 addr /= EHCI_PAGE_SIZE; 3956 3957 /* This gets the initial offset into the first page, 3958 * looks how far further along the current uframe 3959 * offset is. Works out how many pages that is. 3960 */ 3961 3962 itd->itd.itd_ctl[j] = htole32 ( EHCI_ITD_ACTIVE | 3963 EHCI_ITD_SET_LEN(xfer->frlengths[trans_count]) | 3964 EHCI_ITD_SET_PG(addr) | 3965 EHCI_ITD_SET_OFFS(EHCI_PAGE_OFFSET(DMAADDR(dma_buf,offs)))); 3966 3967 total_length += xfer->frlengths[trans_count]; 3968 offs += xfer->frlengths[trans_count]; 3969 trans_count++; 3970 3971 if (trans_count >= xfer->nframes) { /*Set IOC*/ 3972 itd->itd.itd_ctl[j] |= htole32(EHCI_ITD_IOC); 3973 break; 3974 } 3975 } 3976 3977 /* Step 1.75, set buffer pointers. To simplify matters, all 3978 * pointers are filled out for the next 7 hardware pages in 3979 * the dma block, so no need to worry what pages to cover 3980 * and what to not. 3981 */ 3982 3983 for (j = 0; j < EHCI_ITD_NBUFFERS; j++) { 3984 /* 3985 * Don't try to lookup a page that's past the end 3986 * of buffer 3987 */ 3988 int page_offs = EHCI_PAGE(froffs + (EHCI_PAGE_SIZE * j)); 3989 if (page_offs >= dma_buf->block->size) 3990 break; 3991 3992 unsigned long long page = DMAADDR(dma_buf, page_offs); 3993 page = EHCI_PAGE(page); 3994 itd->itd.itd_bufr[j] = 3995 htole32(EHCI_ITD_SET_BPTR(page)); 3996 itd->itd.itd_bufr_hi[j] = 3997 htole32(page >> 32); 3998 } 3999 4000 /* 4001 * Other special values 4002 */ 4003 4004 k = epipe->pipe.endpoint->edesc->bEndpointAddress; 4005 itd->itd.itd_bufr[0] |= htole32(EHCI_ITD_SET_EP(UE_GET_ADDR(k)) | 4006 EHCI_ITD_SET_DADDR(epipe->pipe.device->address)); 4007 4008 k = (UE_GET_DIR(epipe->pipe.endpoint->edesc->bEndpointAddress)) 4009 ? 1 : 0; 4010 j = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize); 4011 itd->itd.itd_bufr[1] |= htole32(EHCI_ITD_SET_DIR(k) | 4012 EHCI_ITD_SET_MAXPKT(UE_GET_SIZE(j))); 4013 4014 /* FIXME: handle invalid trans */ 4015 itd->itd.itd_bufr[2] |= 4016 htole32(EHCI_ITD_SET_MULTI(UE_GET_TRANS(j)+1)); 4017 4018 usb_syncmem(&itd->dma, 4019 itd->offs + offsetof(ehci_itd_t, itd_next), 4020 sizeof(ehci_itd_t), 4021 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4022 4023 prev = itd; 4024 } /* End of frame */ 4025 4026 stop = itd; 4027 stop->xfer_next = NULL; 4028 exfer->isoc_len = total_length; 4029 4030 usb_syncmem(&exfer->xfer.dmabuf, 0, total_length, 4031 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 4032 4033 /* 4034 * Part 2: Transfer descriptors have now been set up, now they must 4035 * be scheduled into the period frame list. Erk. Not wanting to 4036 * complicate matters, transfer is denied if the transfer spans 4037 * more than the period frame list. 4038 */ 4039 4040 s = splusb(); 4041 4042 /* Start inserting frames */ 4043 if (epipe->u.isoc.cur_xfers > 0) { 4044 frindex = epipe->u.isoc.next_frame; 4045 } else { 4046 frindex = EOREAD4(sc, EHCI_FRINDEX); 4047 frindex = frindex >> 3; /* Erase microframe index */ 4048 frindex += 2; 4049 } 4050 4051 if (frindex >= sc->sc_flsize) 4052 frindex &= (sc->sc_flsize - 1); 4053 4054 /* What's the frame interval? */ 4055 i = (1 << (epipe->pipe.endpoint->edesc->bInterval - 1)); 4056 if (i / USB_UFRAMES_PER_FRAME == 0) 4057 i = 1; 4058 else 4059 i /= USB_UFRAMES_PER_FRAME; 4060 4061 itd = start; 4062 for (j = 0; j < frames; j++) { 4063 if (itd == NULL) 4064 panic("ehci: unexpectedly ran out of isoc itds, isoc_start\n"); 4065 4066 itd->itd.itd_next = sc->sc_flist[frindex]; 4067 if (itd->itd.itd_next == 0) 4068 /* FIXME: frindex table gets initialized to NULL 4069 * or EHCI_NULL? */ 4070 itd->itd.itd_next = EHCI_NULL; 4071 4072 usb_syncmem(&itd->dma, 4073 itd->offs + offsetof(ehci_itd_t, itd_next), 4074 sizeof(itd->itd.itd_next), 4075 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4076 4077 sc->sc_flist[frindex] = htole32(EHCI_LINK_ITD | itd->physaddr); 4078 4079 usb_syncmem(&sc->sc_fldma, 4080 sizeof(ehci_link_t) * frindex, 4081 sizeof(ehci_link_t), 4082 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 4083 4084 itd->u.frame_list.next = sc->sc_softitds[frindex]; 4085 sc->sc_softitds[frindex] = itd; 4086 if (itd->u.frame_list.next != NULL) 4087 itd->u.frame_list.next->u.frame_list.prev = itd; 4088 itd->slot = frindex; 4089 itd->u.frame_list.prev = NULL; 4090 4091 frindex += i; 4092 if (frindex >= sc->sc_flsize) 4093 frindex -= sc->sc_flsize; 4094 4095 itd = itd->xfer_next; 4096 } 4097 4098 epipe->u.isoc.cur_xfers++; 4099 epipe->u.isoc.next_frame = frindex; 4100 4101 exfer->itdstart = start; 4102 exfer->itdend = stop; 4103 exfer->sqtdstart = NULL; 4104 exfer->sqtdstart = NULL; 4105 4106 mutex_enter(&sc->sc_intrhead_lock); 4107 ehci_add_intr_list(sc, exfer); 4108 mutex_exit(&sc->sc_intrhead_lock); 4109 xfer->status = USBD_IN_PROGRESS; 4110 xfer->done = 0; 4111 splx(s); 4112 4113 if (sc->sc_bus.use_polling) { 4114 printf("Starting ehci isoc xfer with polling. Bad idea?\n"); 4115 ehci_waitintr(sc, xfer); 4116 } 4117 4118 return USBD_IN_PROGRESS; 4119 } 4120 4121 Static void 4122 ehci_device_isoc_abort(usbd_xfer_handle xfer) 4123 { 4124 DPRINTFN(1, ("ehci_device_isoc_abort: xfer = %p\n", xfer)); 4125 ehci_abort_isoc_xfer(xfer, USBD_CANCELLED); 4126 } 4127 4128 Static void 4129 ehci_device_isoc_close(usbd_pipe_handle pipe) 4130 { 4131 DPRINTFN(1, ("ehci_device_isoc_close: nothing in the pipe to free?\n")); 4132 } 4133 4134 Static void 4135 ehci_device_isoc_done(usbd_xfer_handle xfer) 4136 { 4137 struct ehci_xfer *exfer; 4138 ehci_softc_t *sc; 4139 struct ehci_pipe *epipe; 4140 int s; 4141 4142 exfer = EXFER(xfer); 4143 sc = xfer->pipe->device->bus->hci_private; 4144 epipe = (struct ehci_pipe *) xfer->pipe; 4145 4146 s = splusb(); 4147 epipe->u.isoc.cur_xfers--; 4148 mutex_enter(&sc->sc_intrhead_lock); 4149 if (xfer->status != USBD_NOMEM && ehci_active_intr_list(exfer)) { 4150 ehci_del_intr_list(sc, exfer); 4151 ehci_rem_free_itd_chain(sc, exfer); 4152 } 4153 mutex_exit(&sc->sc_intrhead_lock); 4154 splx(s); 4155 4156 usb_syncmem(&xfer->dmabuf, 0, xfer->length, BUS_DMASYNC_POSTWRITE | 4157 BUS_DMASYNC_POSTREAD); 4158 4159 } 4160
Indexes created Wed Oct 01 19:09:53 GMT 2025