urio.c revision 189275
1184610Salfred/*- 2184610Salfred * Copyright (c) 2000 Iwasa Kazmi 3184610Salfred * All rights reserved. 4184610Salfred * 5184610Salfred * Redistribution and use in source and binary forms, with or without 6184610Salfred * modification, are permitted provided that the following conditions 7184610Salfred * are met: 8184610Salfred * 1. Redistributions of source code must retain the above copyright 9184610Salfred * notice, this list of conditions, and the following disclaimer. 10184610Salfred * 2. Redistributions in binary form must reproduce the above copyright 11184610Salfred * notice, this list of conditions and the following disclaimer in the 12184610Salfred * documentation and/or other materials provided with the distribution. 13184610Salfred * 14184610Salfred * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15184610Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16184610Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17184610Salfred * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 18184610Salfred * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19184610Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20184610Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21184610Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22184610Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23184610Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24184610Salfred * SUCH DAMAGE. 25184610Salfred * 26184610Salfred * This code is based on ugen.c and ulpt.c developed by Lennart Augustsson. 27184610Salfred * This code includes software developed by the NetBSD Foundation, Inc. and 28184610Salfred * its contributors. 29184610Salfred */ 30184610Salfred 31184610Salfred#include <sys/cdefs.h> 32184610Salfred__FBSDID("$FreeBSD: head/sys/dev/usb/storage/urio.c 189275 2009-03-02 05:37:05Z thompsa $"); 33184610Salfred 34184610Salfred 35184610Salfred/* 36184610Salfred * 2000/3/24 added NetBSD/OpenBSD support (from Alex Nemirovsky) 37184610Salfred * 2000/3/07 use two bulk-pipe handles for read and write (Dirk) 38184610Salfred * 2000/3/06 change major number(143), and copyright header 39184610Salfred * some fix for 4.0 (Dirk) 40184610Salfred * 2000/3/05 codes for FreeBSD 4.x - CURRENT (Thanks to Dirk-Willem van Gulik) 41184610Salfred * 2000/3/01 remove retry code from urioioctl() 42184610Salfred * change method of bulk transfer (no interrupt) 43184610Salfred * 2000/2/28 small fixes for new rio_usb.h 44184610Salfred * 2000/2/24 first version. 45184610Salfred */ 46184610Salfred 47188746Sthompsa#include "usbdevs.h" 48188942Sthompsa#include <dev/usb/usb.h> 49188942Sthompsa#include <dev/usb/usb_mfunc.h> 50188942Sthompsa#include <dev/usb/usb_error.h> 51188942Sthompsa#include <dev/usb/usb_ioctl.h> 52188942Sthompsa#include <dev/usb/storage/rio500_usb.h> 53184610Salfred 54184610Salfred#define USB_DEBUG_VAR urio_debug 55184610Salfred 56188942Sthompsa#include <dev/usb/usb_core.h> 57188942Sthompsa#include <dev/usb/usb_debug.h> 58188942Sthompsa#include <dev/usb/usb_process.h> 59188942Sthompsa#include <dev/usb/usb_request.h> 60188942Sthompsa#include <dev/usb/usb_lookup.h> 61188942Sthompsa#include <dev/usb/usb_util.h> 62188942Sthompsa#include <dev/usb/usb_busdma.h> 63188942Sthompsa#include <dev/usb/usb_mbuf.h> 64188942Sthompsa#include <dev/usb/usb_dev.h> 65188942Sthompsa#include <dev/usb/usb_generic.h> 66184610Salfred 67184610Salfred#if USB_DEBUG 68184610Salfredstatic int urio_debug = 0; 69184610Salfred 70184610SalfredSYSCTL_NODE(_hw_usb2, OID_AUTO, urio, CTLFLAG_RW, 0, "USB urio"); 71184610SalfredSYSCTL_INT(_hw_usb2_urio, OID_AUTO, debug, CTLFLAG_RW, 72184610Salfred &urio_debug, 0, "urio debug level"); 73184610Salfred#endif 74184610Salfred 75184610Salfred#define URIO_T_WR 0 76184610Salfred#define URIO_T_RD 1 77184610Salfred#define URIO_T_WR_CS 2 78184610Salfred#define URIO_T_RD_CS 3 79184610Salfred#define URIO_T_MAX 4 80184610Salfred 81184610Salfred#define URIO_BSIZE (1<<12) /* bytes */ 82184610Salfred#define URIO_IFQ_MAXLEN 2 /* units */ 83184610Salfred 84184610Salfredstruct urio_softc { 85184610Salfred struct usb2_fifo_sc sc_fifo; 86184610Salfred struct mtx sc_mtx; 87184610Salfred 88184610Salfred struct usb2_device *sc_udev; 89184610Salfred struct usb2_xfer *sc_xfer[URIO_T_MAX]; 90184610Salfred 91184610Salfred uint8_t sc_flags; 92184610Salfred#define URIO_FLAG_READ_STALL 0x01 /* read transfer stalled */ 93184610Salfred#define URIO_FLAG_WRITE_STALL 0x02 /* write transfer stalled */ 94184610Salfred 95184610Salfred uint8_t sc_name[16]; 96184610Salfred}; 97184610Salfred 98184610Salfred/* prototypes */ 99184610Salfred 100184610Salfredstatic device_probe_t urio_probe; 101184610Salfredstatic device_attach_t urio_attach; 102184610Salfredstatic device_detach_t urio_detach; 103184610Salfred 104184610Salfredstatic usb2_callback_t urio_write_callback; 105184610Salfredstatic usb2_callback_t urio_write_clear_stall_callback; 106184610Salfredstatic usb2_callback_t urio_read_callback; 107184610Salfredstatic usb2_callback_t urio_read_clear_stall_callback; 108184610Salfred 109184610Salfredstatic usb2_fifo_close_t urio_close; 110184610Salfredstatic usb2_fifo_cmd_t urio_start_read; 111184610Salfredstatic usb2_fifo_cmd_t urio_start_write; 112184610Salfredstatic usb2_fifo_cmd_t urio_stop_read; 113184610Salfredstatic usb2_fifo_cmd_t urio_stop_write; 114184610Salfredstatic usb2_fifo_ioctl_t urio_ioctl; 115184610Salfredstatic usb2_fifo_open_t urio_open; 116184610Salfred 117184610Salfredstatic struct usb2_fifo_methods urio_fifo_methods = { 118184610Salfred .f_close = &urio_close, 119184610Salfred .f_ioctl = &urio_ioctl, 120184610Salfred .f_open = &urio_open, 121184610Salfred .f_start_read = &urio_start_read, 122184610Salfred .f_start_write = &urio_start_write, 123184610Salfred .f_stop_read = &urio_stop_read, 124184610Salfred .f_stop_write = &urio_stop_write, 125184610Salfred .basename[0] = "urio", 126184610Salfred}; 127184610Salfred 128184610Salfredstatic const struct usb2_config urio_config[URIO_T_MAX] = { 129184610Salfred [URIO_T_WR] = { 130184610Salfred .type = UE_BULK, 131184610Salfred .endpoint = UE_ADDR_ANY, 132184610Salfred .direction = UE_DIR_OUT, 133184610Salfred .mh.bufsize = URIO_BSIZE, 134184610Salfred .mh.flags = {.pipe_bof = 1,.force_short_xfer = 1,.proxy_buffer = 1,}, 135184610Salfred .mh.callback = &urio_write_callback, 136184610Salfred }, 137184610Salfred 138184610Salfred [URIO_T_RD] = { 139184610Salfred .type = UE_BULK, 140184610Salfred .endpoint = UE_ADDR_ANY, 141184610Salfred .direction = UE_DIR_IN, 142184610Salfred .mh.bufsize = URIO_BSIZE, 143184610Salfred .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,.proxy_buffer = 1,}, 144184610Salfred .mh.callback = &urio_read_callback, 145184610Salfred }, 146184610Salfred 147184610Salfred [URIO_T_WR_CS] = { 148184610Salfred .type = UE_CONTROL, 149184610Salfred .endpoint = 0x00, /* Control pipe */ 150184610Salfred .direction = UE_DIR_ANY, 151184610Salfred .mh.bufsize = sizeof(struct usb2_device_request), 152184610Salfred .mh.flags = {}, 153184610Salfred .mh.callback = &urio_write_clear_stall_callback, 154184610Salfred .mh.timeout = 1000, /* 1 second */ 155184610Salfred .mh.interval = 50, /* 50ms */ 156184610Salfred }, 157184610Salfred 158184610Salfred [URIO_T_RD_CS] = { 159184610Salfred .type = UE_CONTROL, 160184610Salfred .endpoint = 0x00, /* Control pipe */ 161184610Salfred .direction = UE_DIR_ANY, 162184610Salfred .mh.bufsize = sizeof(struct usb2_device_request), 163184610Salfred .mh.flags = {}, 164184610Salfred .mh.callback = &urio_read_clear_stall_callback, 165184610Salfred .mh.timeout = 1000, /* 1 second */ 166184610Salfred .mh.interval = 50, /* 50ms */ 167184610Salfred }, 168184610Salfred}; 169184610Salfred 170184610Salfredstatic devclass_t urio_devclass; 171184610Salfred 172184610Salfredstatic device_method_t urio_methods[] = { 173184610Salfred /* Device interface */ 174184610Salfred DEVMETHOD(device_probe, urio_probe), 175184610Salfred DEVMETHOD(device_attach, urio_attach), 176184610Salfred DEVMETHOD(device_detach, urio_detach), 177184610Salfred {0, 0} 178184610Salfred}; 179184610Salfred 180184610Salfredstatic driver_t urio_driver = { 181184610Salfred .name = "urio", 182184610Salfred .methods = urio_methods, 183184610Salfred .size = sizeof(struct urio_softc), 184184610Salfred}; 185184610Salfred 186189275SthompsaDRIVER_MODULE(urio, uhub, urio_driver, urio_devclass, NULL, 0); 187188942SthompsaMODULE_DEPEND(urio, usb, 1, 1, 1); 188184610Salfred 189184610Salfredstatic int 190184610Salfredurio_probe(device_t dev) 191184610Salfred{ 192184610Salfred struct usb2_attach_arg *uaa = device_get_ivars(dev); 193184610Salfred 194184610Salfred if (uaa->usb2_mode != USB_MODE_HOST) { 195184610Salfred return (ENXIO); 196184610Salfred } 197184610Salfred if ((((uaa->info.idVendor == USB_VENDOR_DIAMOND) && 198184610Salfred (uaa->info.idProduct == USB_PRODUCT_DIAMOND_RIO500USB)) || 199184610Salfred ((uaa->info.idVendor == USB_VENDOR_DIAMOND2) && 200184610Salfred ((uaa->info.idProduct == USB_PRODUCT_DIAMOND2_RIO600USB) || 201184610Salfred (uaa->info.idProduct == USB_PRODUCT_DIAMOND2_RIO800USB))))) 202184610Salfred return (0); 203184610Salfred else 204184610Salfred return (ENXIO); 205184610Salfred} 206184610Salfred 207184610Salfredstatic int 208184610Salfredurio_attach(device_t dev) 209184610Salfred{ 210184610Salfred struct usb2_attach_arg *uaa = device_get_ivars(dev); 211184610Salfred struct urio_softc *sc = device_get_softc(dev); 212184610Salfred int error; 213184610Salfred 214184610Salfred device_set_usb2_desc(dev); 215184610Salfred 216184610Salfred sc->sc_udev = uaa->device; 217184610Salfred 218184610Salfred mtx_init(&sc->sc_mtx, "urio lock", NULL, MTX_DEF | MTX_RECURSE); 219184610Salfred 220184610Salfred snprintf(sc->sc_name, sizeof(sc->sc_name), 221184610Salfred "%s", device_get_nameunit(dev)); 222184610Salfred 223184610Salfred error = usb2_transfer_setup(uaa->device, 224184610Salfred &uaa->info.bIfaceIndex, sc->sc_xfer, 225184610Salfred urio_config, URIO_T_MAX, sc, &sc->sc_mtx); 226184610Salfred 227184610Salfred if (error) { 228184610Salfred DPRINTF("error=%s\n", usb2_errstr(error)); 229184610Salfred goto detach; 230184610Salfred } 231184610Salfred 232184610Salfred error = usb2_fifo_attach(uaa->device, sc, &sc->sc_mtx, 233184610Salfred &urio_fifo_methods, &sc->sc_fifo, 234189110Sthompsa device_get_unit(dev), 0 - 1, uaa->info.bIfaceIndex, 235189110Sthompsa UID_ROOT, GID_OPERATOR, 0644); 236184610Salfred if (error) { 237184610Salfred goto detach; 238184610Salfred } 239184610Salfred return (0); /* success */ 240184610Salfred 241184610Salfreddetach: 242184610Salfred urio_detach(dev); 243184610Salfred return (ENOMEM); /* failure */ 244184610Salfred} 245184610Salfred 246184610Salfredstatic void 247184610Salfredurio_write_callback(struct usb2_xfer *xfer) 248184610Salfred{ 249184610Salfred struct urio_softc *sc = xfer->priv_sc; 250184610Salfred struct usb2_fifo *f = sc->sc_fifo.fp[USB_FIFO_TX]; 251184610Salfred uint32_t actlen; 252184610Salfred 253184610Salfred switch (USB_GET_STATE(xfer)) { 254184610Salfred case USB_ST_TRANSFERRED: 255184610Salfred case USB_ST_SETUP: 256184610Salfred if (sc->sc_flags & URIO_FLAG_WRITE_STALL) { 257184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_WR_CS]); 258184610Salfred return; 259184610Salfred } 260184610Salfred if (usb2_fifo_get_data(f, xfer->frbuffers, 0, 261184610Salfred xfer->max_data_length, &actlen, 0)) { 262184610Salfred 263184610Salfred xfer->frlengths[0] = actlen; 264184610Salfred usb2_start_hardware(xfer); 265184610Salfred } 266184610Salfred return; 267184610Salfred 268184610Salfred default: /* Error */ 269184610Salfred if (xfer->error != USB_ERR_CANCELLED) { 270184610Salfred /* try to clear stall first */ 271184610Salfred sc->sc_flags |= URIO_FLAG_WRITE_STALL; 272184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_WR_CS]); 273184610Salfred } 274184610Salfred return; 275184610Salfred } 276184610Salfred} 277184610Salfred 278184610Salfredstatic void 279184610Salfredurio_write_clear_stall_callback(struct usb2_xfer *xfer) 280184610Salfred{ 281184610Salfred struct urio_softc *sc = xfer->priv_sc; 282184610Salfred struct usb2_xfer *xfer_other = sc->sc_xfer[URIO_T_WR]; 283184610Salfred 284184610Salfred if (usb2_clear_stall_callback(xfer, xfer_other)) { 285184610Salfred DPRINTF("stall cleared\n"); 286184610Salfred sc->sc_flags &= ~URIO_FLAG_WRITE_STALL; 287184610Salfred usb2_transfer_start(xfer_other); 288184610Salfred } 289184610Salfred} 290184610Salfred 291184610Salfredstatic void 292184610Salfredurio_read_callback(struct usb2_xfer *xfer) 293184610Salfred{ 294184610Salfred struct urio_softc *sc = xfer->priv_sc; 295184610Salfred struct usb2_fifo *f = sc->sc_fifo.fp[USB_FIFO_RX]; 296184610Salfred 297184610Salfred switch (USB_GET_STATE(xfer)) { 298184610Salfred case USB_ST_TRANSFERRED: 299184610Salfred usb2_fifo_put_data(f, xfer->frbuffers, 0, 300184610Salfred xfer->actlen, 1); 301184610Salfred 302184610Salfred case USB_ST_SETUP: 303184610Salfred if (sc->sc_flags & URIO_FLAG_READ_STALL) { 304184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_RD_CS]); 305184610Salfred return; 306184610Salfred } 307184610Salfred if (usb2_fifo_put_bytes_max(f) != 0) { 308184610Salfred xfer->frlengths[0] = xfer->max_data_length; 309184610Salfred usb2_start_hardware(xfer); 310184610Salfred } 311184610Salfred return; 312184610Salfred 313184610Salfred default: /* Error */ 314184610Salfred if (xfer->error != USB_ERR_CANCELLED) { 315184610Salfred /* try to clear stall first */ 316184610Salfred sc->sc_flags |= URIO_FLAG_READ_STALL; 317184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_RD_CS]); 318184610Salfred } 319184610Salfred return; 320184610Salfred } 321184610Salfred} 322184610Salfred 323184610Salfredstatic void 324184610Salfredurio_read_clear_stall_callback(struct usb2_xfer *xfer) 325184610Salfred{ 326184610Salfred struct urio_softc *sc = xfer->priv_sc; 327184610Salfred struct usb2_xfer *xfer_other = sc->sc_xfer[URIO_T_RD]; 328184610Salfred 329184610Salfred if (usb2_clear_stall_callback(xfer, xfer_other)) { 330184610Salfred DPRINTF("stall cleared\n"); 331184610Salfred sc->sc_flags &= ~URIO_FLAG_READ_STALL; 332184610Salfred usb2_transfer_start(xfer_other); 333184610Salfred } 334184610Salfred} 335184610Salfred 336184610Salfredstatic void 337184610Salfredurio_start_read(struct usb2_fifo *fifo) 338184610Salfred{ 339184610Salfred struct urio_softc *sc = fifo->priv_sc0; 340184610Salfred 341184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_RD]); 342184610Salfred} 343184610Salfred 344184610Salfredstatic void 345184610Salfredurio_stop_read(struct usb2_fifo *fifo) 346184610Salfred{ 347184610Salfred struct urio_softc *sc = fifo->priv_sc0; 348184610Salfred 349184610Salfred usb2_transfer_stop(sc->sc_xfer[URIO_T_RD_CS]); 350184610Salfred usb2_transfer_stop(sc->sc_xfer[URIO_T_RD]); 351184610Salfred} 352184610Salfred 353184610Salfredstatic void 354184610Salfredurio_start_write(struct usb2_fifo *fifo) 355184610Salfred{ 356184610Salfred struct urio_softc *sc = fifo->priv_sc0; 357184610Salfred 358184610Salfred usb2_transfer_start(sc->sc_xfer[URIO_T_WR]); 359184610Salfred} 360184610Salfred 361184610Salfredstatic void 362184610Salfredurio_stop_write(struct usb2_fifo *fifo) 363184610Salfred{ 364184610Salfred struct urio_softc *sc = fifo->priv_sc0; 365184610Salfred 366184610Salfred usb2_transfer_stop(sc->sc_xfer[URIO_T_WR_CS]); 367184610Salfred usb2_transfer_stop(sc->sc_xfer[URIO_T_WR]); 368184610Salfred} 369184610Salfred 370184610Salfredstatic int 371189110Sthompsaurio_open(struct usb2_fifo *fifo, int fflags) 372184610Salfred{ 373184610Salfred struct urio_softc *sc = fifo->priv_sc0; 374184610Salfred 375184610Salfred if ((fflags & (FWRITE | FREAD)) != (FWRITE | FREAD)) { 376184610Salfred return (EACCES); 377184610Salfred } 378184610Salfred if (fflags & FREAD) { 379184610Salfred /* clear stall first */ 380184610Salfred mtx_lock(&sc->sc_mtx); 381184610Salfred sc->sc_flags |= URIO_FLAG_READ_STALL; 382184610Salfred mtx_unlock(&sc->sc_mtx); 383184610Salfred 384184610Salfred if (usb2_fifo_alloc_buffer(fifo, 385184610Salfred sc->sc_xfer[URIO_T_RD]->max_data_length, 386184610Salfred URIO_IFQ_MAXLEN)) { 387184610Salfred return (ENOMEM); 388184610Salfred } 389184610Salfred } 390184610Salfred if (fflags & FWRITE) { 391184610Salfred /* clear stall first */ 392184610Salfred sc->sc_flags |= URIO_FLAG_WRITE_STALL; 393184610Salfred 394184610Salfred if (usb2_fifo_alloc_buffer(fifo, 395184610Salfred sc->sc_xfer[URIO_T_WR]->max_data_length, 396184610Salfred URIO_IFQ_MAXLEN)) { 397184610Salfred return (ENOMEM); 398184610Salfred } 399184610Salfred } 400184610Salfred return (0); /* success */ 401184610Salfred} 402184610Salfred 403184610Salfredstatic void 404189110Sthompsaurio_close(struct usb2_fifo *fifo, int fflags) 405184610Salfred{ 406184610Salfred if (fflags & (FREAD | FWRITE)) { 407184610Salfred usb2_fifo_free_buffer(fifo); 408184610Salfred } 409184610Salfred} 410184610Salfred 411184610Salfredstatic int 412184610Salfredurio_ioctl(struct usb2_fifo *fifo, u_long cmd, void *addr, 413189110Sthompsa int fflags) 414184610Salfred{ 415184610Salfred struct usb2_ctl_request ur; 416184610Salfred struct RioCommand *rio_cmd; 417184610Salfred int error; 418184610Salfred 419184610Salfred switch (cmd) { 420184610Salfred case RIO_RECV_COMMAND: 421184610Salfred if (!(fflags & FWRITE)) { 422184610Salfred error = EPERM; 423184610Salfred goto done; 424184610Salfred } 425184610Salfred bzero(&ur, sizeof(ur)); 426184610Salfred rio_cmd = addr; 427184610Salfred ur.ucr_request.bmRequestType = 428184610Salfred rio_cmd->requesttype | UT_READ_VENDOR_DEVICE; 429184610Salfred break; 430184610Salfred 431184610Salfred case RIO_SEND_COMMAND: 432184610Salfred if (!(fflags & FWRITE)) { 433184610Salfred error = EPERM; 434184610Salfred goto done; 435184610Salfred } 436184610Salfred bzero(&ur, sizeof(ur)); 437184610Salfred rio_cmd = addr; 438184610Salfred ur.ucr_request.bmRequestType = 439184610Salfred rio_cmd->requesttype | UT_WRITE_VENDOR_DEVICE; 440184610Salfred break; 441184610Salfred 442184610Salfred default: 443184610Salfred error = EINVAL; 444184610Salfred goto done; 445184610Salfred } 446184610Salfred 447184610Salfred DPRINTFN(2, "Sending command\n"); 448184610Salfred 449184610Salfred /* Send rio control message */ 450184610Salfred ur.ucr_request.bRequest = rio_cmd->request; 451184610Salfred USETW(ur.ucr_request.wValue, rio_cmd->value); 452184610Salfred USETW(ur.ucr_request.wIndex, rio_cmd->index); 453184610Salfred USETW(ur.ucr_request.wLength, rio_cmd->length); 454184610Salfred ur.ucr_data = rio_cmd->buffer; 455184610Salfred 456184610Salfred /* reuse generic USB code */ 457184610Salfred error = ugen_do_request(fifo, &ur); 458184610Salfred 459184610Salfreddone: 460184610Salfred return (error); 461184610Salfred} 462184610Salfred 463184610Salfredstatic int 464184610Salfredurio_detach(device_t dev) 465184610Salfred{ 466184610Salfred struct urio_softc *sc = device_get_softc(dev); 467184610Salfred 468184610Salfred DPRINTF("\n"); 469184610Salfred 470184610Salfred usb2_fifo_detach(&sc->sc_fifo); 471184610Salfred 472184610Salfred usb2_transfer_unsetup(sc->sc_xfer, URIO_T_MAX); 473184610Salfred 474184610Salfred mtx_destroy(&sc->sc_mtx); 475184610Salfred 476184610Salfred return (0); 477184610Salfred} 478