1184610Salfred/* $NetBSD: ucom.c,v 1.40 2001/11/13 06:24:54 lukem Exp $ */ 2184610Salfred 3184610Salfred/*- 4184610Salfred * Copyright (c) 2001-2003, 2005, 2008 5184610Salfred * Shunsuke Akiyama <akiyama@jp.FreeBSD.org>. 6184610Salfred * All rights reserved. 7184610Salfred * 8184610Salfred * Redistribution and use in source and binary forms, with or without 9184610Salfred * modification, are permitted provided that the following conditions 10184610Salfred * are met: 11184610Salfred * 1. Redistributions of source code must retain the above copyright 12184610Salfred * notice, this list of conditions and the following disclaimer. 13184610Salfred * 2. Redistributions in binary form must reproduce the above copyright 14184610Salfred * notice, this list of conditions and the following disclaimer in the 15184610Salfred * documentation and/or other materials provided with the distribution. 16184610Salfred * 17184610Salfred * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18184610Salfred * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19184610Salfred * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20184610Salfred * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21184610Salfred * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22184610Salfred * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23184610Salfred * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24184610Salfred * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25184610Salfred * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26184610Salfred * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27184610Salfred * SUCH DAMAGE. 28184610Salfred */ 29184610Salfred 30184610Salfred#include <sys/cdefs.h> 31184610Salfred__FBSDID("$FreeBSD$"); 32184610Salfred 33184610Salfred/*- 34184610Salfred * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc. 35184610Salfred * All rights reserved. 36184610Salfred * 37184610Salfred * This code is derived from software contributed to The NetBSD Foundation 38184610Salfred * by Lennart Augustsson (lennart@augustsson.net) at 39184610Salfred * Carlstedt Research & Technology. 40184610Salfred * 41184610Salfred * Redistribution and use in source and binary forms, with or without 42184610Salfred * modification, are permitted provided that the following conditions 43184610Salfred * are met: 44184610Salfred * 1. Redistributions of source code must retain the above copyright 45184610Salfred * notice, this list of conditions and the following disclaimer. 46184610Salfred * 2. Redistributions in binary form must reproduce the above copyright 47184610Salfred * notice, this list of conditions and the following disclaimer in the 48184610Salfred * documentation and/or other materials provided with the distribution. 49184610Salfred * 50184610Salfred * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 51184610Salfred * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 52184610Salfred * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53184610Salfred * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 54184610Salfred * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55184610Salfred * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56184610Salfred * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57184610Salfred * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58184610Salfred * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59184610Salfred * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60184610Salfred * POSSIBILITY OF SUCH DAMAGE. 61184610Salfred */ 62184610Salfred 63194677Sthompsa#include <sys/stdint.h> 64194677Sthompsa#include <sys/stddef.h> 65194677Sthompsa#include <sys/param.h> 66194677Sthompsa#include <sys/queue.h> 67194677Sthompsa#include <sys/types.h> 68194677Sthompsa#include <sys/systm.h> 69194677Sthompsa#include <sys/kernel.h> 70194677Sthompsa#include <sys/bus.h> 71194677Sthompsa#include <sys/module.h> 72194677Sthompsa#include <sys/lock.h> 73194677Sthompsa#include <sys/mutex.h> 74194677Sthompsa#include <sys/condvar.h> 75194677Sthompsa#include <sys/sysctl.h> 76194677Sthompsa#include <sys/sx.h> 77194677Sthompsa#include <sys/unistd.h> 78194677Sthompsa#include <sys/callout.h> 79194677Sthompsa#include <sys/malloc.h> 80194677Sthompsa#include <sys/priv.h> 81197570Sthompsa#include <sys/cons.h> 82197570Sthompsa#include <sys/kdb.h> 83194677Sthompsa 84188942Sthompsa#include <dev/usb/usb.h> 85194677Sthompsa#include <dev/usb/usbdi.h> 86194677Sthompsa#include <dev/usb/usbdi_util.h> 87184610Salfred 88194228Sthompsa#define USB_DEBUG_VAR ucom_debug 89188942Sthompsa#include <dev/usb/usb_debug.h> 90194677Sthompsa#include <dev/usb/usb_busdma.h> 91188942Sthompsa#include <dev/usb/usb_process.h> 92184610Salfred 93188942Sthompsa#include <dev/usb/serial/usb_serial.h> 94184610Salfred 95197570Sthompsa#include "opt_gdb.h" 96197570Sthompsa 97227309Sedstatic SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom"); 98197570Sthompsa 99207077Sthompsa#ifdef USB_DEBUG 100194228Sthompsastatic int ucom_debug = 0; 101184610Salfred 102192502SthompsaSYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW, 103194228Sthompsa &ucom_debug, 0, "ucom debug level"); 104184610Salfred#endif 105184610Salfred 106197570Sthompsa#define UCOM_CONS_BUFSIZE 1024 107197570Sthompsa 108197570Sthompsastatic uint8_t ucom_cons_rx_buf[UCOM_CONS_BUFSIZE]; 109197570Sthompsastatic uint8_t ucom_cons_tx_buf[UCOM_CONS_BUFSIZE]; 110197570Sthompsa 111197570Sthompsastatic unsigned int ucom_cons_rx_low = 0; 112197570Sthompsastatic unsigned int ucom_cons_rx_high = 0; 113197570Sthompsa 114197570Sthompsastatic unsigned int ucom_cons_tx_low = 0; 115197570Sthompsastatic unsigned int ucom_cons_tx_high = 0; 116197570Sthompsa 117197570Sthompsastatic int ucom_cons_unit = -1; 118214761Sn_hibmastatic int ucom_cons_subunit = 0; 119197570Sthompsastatic int ucom_cons_baud = 9600; 120197570Sthompsastatic struct ucom_softc *ucom_cons_softc = NULL; 121197570Sthompsa 122197570SthompsaTUNABLE_INT("hw.usb.ucom.cons_unit", &ucom_cons_unit); 123242126ShselaskySYSCTL_INT(_hw_usb_ucom, OID_AUTO, cons_unit, CTLFLAG_RW | CTLFLAG_TUN, 124197570Sthompsa &ucom_cons_unit, 0, "console unit number"); 125214761Sn_hibmaTUNABLE_INT("hw.usb.ucom.cons_subunit", &ucom_cons_subunit); 126242126ShselaskySYSCTL_INT(_hw_usb_ucom, OID_AUTO, cons_subunit, CTLFLAG_RW | CTLFLAG_TUN, 127214761Sn_hibma &ucom_cons_subunit, 0, "console subunit number"); 128197570SthompsaTUNABLE_INT("hw.usb.ucom.cons_baud", &ucom_cons_baud); 129242126ShselaskySYSCTL_INT(_hw_usb_ucom, OID_AUTO, cons_baud, CTLFLAG_RW | CTLFLAG_TUN, 130197570Sthompsa &ucom_cons_baud, 0, "console baud rate"); 131197570Sthompsa 132194228Sthompsastatic usb_proc_callback_t ucom_cfg_start_transfers; 133194228Sthompsastatic usb_proc_callback_t ucom_cfg_open; 134194228Sthompsastatic usb_proc_callback_t ucom_cfg_close; 135194228Sthompsastatic usb_proc_callback_t ucom_cfg_line_state; 136194228Sthompsastatic usb_proc_callback_t ucom_cfg_status_change; 137194228Sthompsastatic usb_proc_callback_t ucom_cfg_param; 138184610Salfred 139214761Sn_hibmastatic int ucom_unit_alloc(void); 140214761Sn_hibmastatic void ucom_unit_free(int); 141214761Sn_hibmastatic int ucom_attach_tty(struct ucom_super_softc *, struct ucom_softc *); 142239179Shselaskystatic void ucom_detach_tty(struct ucom_super_softc *, struct ucom_softc *); 143194228Sthompsastatic void ucom_queue_command(struct ucom_softc *, 144193045Sthompsa usb_proc_callback_t *, struct termios *pt, 145192984Sthompsa struct usb_proc_msg *t0, struct usb_proc_msg *t1); 146194228Sthompsastatic void ucom_shutdown(struct ucom_softc *); 147197570Sthompsastatic void ucom_ring(struct ucom_softc *, uint8_t); 148194228Sthompsastatic void ucom_break(struct ucom_softc *, uint8_t); 149194228Sthompsastatic void ucom_dtr(struct ucom_softc *, uint8_t); 150194228Sthompsastatic void ucom_rts(struct ucom_softc *, uint8_t); 151184610Salfred 152194228Sthompsastatic tsw_open_t ucom_open; 153194228Sthompsastatic tsw_close_t ucom_close; 154194228Sthompsastatic tsw_ioctl_t ucom_ioctl; 155194228Sthompsastatic tsw_modem_t ucom_modem; 156194228Sthompsastatic tsw_param_t ucom_param; 157194228Sthompsastatic tsw_outwakeup_t ucom_outwakeup; 158242619Shselaskystatic tsw_inwakeup_t ucom_inwakeup; 159194228Sthompsastatic tsw_free_t ucom_free; 160184610Salfred 161194228Sthompsastatic struct ttydevsw ucom_class = { 162184610Salfred .tsw_flags = TF_INITLOCK | TF_CALLOUT, 163194228Sthompsa .tsw_open = ucom_open, 164194228Sthompsa .tsw_close = ucom_close, 165194228Sthompsa .tsw_outwakeup = ucom_outwakeup, 166242619Shselasky .tsw_inwakeup = ucom_inwakeup, 167194228Sthompsa .tsw_ioctl = ucom_ioctl, 168194228Sthompsa .tsw_param = ucom_param, 169194228Sthompsa .tsw_modem = ucom_modem, 170194228Sthompsa .tsw_free = ucom_free, 171184610Salfred}; 172184610Salfred 173188942SthompsaMODULE_DEPEND(ucom, usb, 1, 1, 1); 174188942SthompsaMODULE_VERSION(ucom, 1); 175184610Salfred 176239179Shselasky#define UCOM_UNIT_MAX 128 /* maximum number of units */ 177239179Shselasky#define UCOM_TTY_PREFIX "U" 178184610Salfred 179239179Shselaskystatic struct unrhdr *ucom_unrhdr; 180239179Shselaskystatic struct mtx ucom_mtx; 181239179Shselaskystatic int ucom_close_refs; 182184610Salfred 183239179Shselaskystatic void 184239179Shselaskyucom_init(void *arg) 185239179Shselasky{ 186239179Shselasky DPRINTF("\n"); 187239179Shselasky ucom_unrhdr = new_unrhdr(0, UCOM_UNIT_MAX - 1, NULL); 188239179Shselasky mtx_init(&ucom_mtx, "UCOM MTX", NULL, MTX_DEF); 189239179Shselasky} 190239179ShselaskySYSINIT(ucom_init, SI_SUB_KLD - 1, SI_ORDER_ANY, ucom_init, NULL); 191214843Sn_hibma 192239179Shselaskystatic void 193239179Shselaskyucom_uninit(void *arg) 194239179Shselasky{ 195239179Shselasky struct unrhdr *hdr; 196239179Shselasky hdr = ucom_unrhdr; 197239179Shselasky ucom_unrhdr = NULL; 198239179Shselasky 199239179Shselasky DPRINTF("\n"); 200239179Shselasky 201239179Shselasky if (hdr != NULL) 202239179Shselasky delete_unrhdr(hdr); 203239179Shselasky 204239179Shselasky mtx_destroy(&ucom_mtx); 205239179Shselasky} 206268206ShselaskySYSUNINIT(ucom_uninit, SI_SUB_KLD - 3, SI_ORDER_ANY, ucom_uninit, NULL); 207239179Shselasky 208214761Sn_hibma/* 209214761Sn_hibma * Mark a unit number (the X in cuaUX) as in use. 210214761Sn_hibma * 211214761Sn_hibma * Note that devices using a different naming scheme (see ucom_tty_name() 212214761Sn_hibma * callback) still use this unit allocation. 213214761Sn_hibma */ 214214761Sn_hibmastatic int 215214761Sn_hibmaucom_unit_alloc(void) 216184610Salfred{ 217214761Sn_hibma int unit; 218184610Salfred 219239179Shselasky /* sanity checks */ 220239179Shselasky if (ucom_unrhdr == NULL) { 221239179Shselasky DPRINTF("ucom_unrhdr is NULL\n"); 222239179Shselasky return (-1); 223214919Sn_hibma } 224239179Shselasky unit = alloc_unr(ucom_unrhdr); 225239179Shselasky DPRINTF("unit %d is allocated\n", unit); 226239179Shselasky return (unit); 227184610Salfred} 228184610Salfred 229214761Sn_hibma/* 230214761Sn_hibma * Mark the unit number as not in use. 231214761Sn_hibma */ 232184610Salfredstatic void 233214761Sn_hibmaucom_unit_free(int unit) 234184610Salfred{ 235239179Shselasky /* sanity checks */ 236239179Shselasky if (unit < 0 || unit >= UCOM_UNIT_MAX || ucom_unrhdr == NULL) { 237239179Shselasky DPRINTF("cannot free unit number\n"); 238239179Shselasky return; 239239179Shselasky } 240239179Shselasky DPRINTF("unit %d is freed\n", unit); 241239179Shselasky free_unr(ucom_unrhdr, unit); 242184610Salfred} 243184610Salfred 244184610Salfred/* 245214761Sn_hibma * Setup a group of one or more serial ports. 246184610Salfred * 247188413Sthompsa * The mutex pointed to by "mtx" is applied before all 248188413Sthompsa * callbacks are called back. Also "mtx" must be applied 249188413Sthompsa * before calling into the ucom-layer! 250184610Salfred */ 251184610Salfredint 252194228Sthompsaucom_attach(struct ucom_super_softc *ssc, struct ucom_softc *sc, 253233774Shselasky int subunits, void *parent, 254192984Sthompsa const struct ucom_callback *callback, struct mtx *mtx) 255184610Salfred{ 256233774Shselasky int subunit; 257184610Salfred int error = 0; 258184610Salfred 259184610Salfred if ((sc == NULL) || 260233774Shselasky (subunits <= 0) || 261239179Shselasky (callback == NULL) || 262239179Shselasky (mtx == NULL)) { 263184610Salfred return (EINVAL); 264184610Salfred } 265188413Sthompsa 266230209Shselasky /* allocate a uniq unit number */ 267214761Sn_hibma ssc->sc_unit = ucom_unit_alloc(); 268214761Sn_hibma if (ssc->sc_unit == -1) 269184610Salfred return (ENOMEM); 270188413Sthompsa 271230209Shselasky /* generate TTY name string */ 272230209Shselasky snprintf(ssc->sc_ttyname, sizeof(ssc->sc_ttyname), 273230209Shselasky UCOM_TTY_PREFIX "%d", ssc->sc_unit); 274230209Shselasky 275230209Shselasky /* create USB request handling process */ 276194228Sthompsa error = usb_proc_create(&ssc->sc_tq, mtx, "ucom", USB_PRI_MED); 277188413Sthompsa if (error) { 278214761Sn_hibma ucom_unit_free(ssc->sc_unit); 279188413Sthompsa return (error); 280184610Salfred } 281214761Sn_hibma ssc->sc_subunits = subunits; 282239299Shselasky ssc->sc_flag = UCOM_FLAG_ATTACHED | 283239299Shselasky UCOM_FLAG_FREE_UNIT; 284188413Sthompsa 285239299Shselasky if (callback->ucom_free == NULL) 286239299Shselasky ssc->sc_flag |= UCOM_FLAG_WAIT_REFS; 287239179Shselasky 288239299Shselasky /* increment reference count */ 289239299Shselasky ucom_ref(ssc); 290239299Shselasky 291214831Sn_hibma for (subunit = 0; subunit < ssc->sc_subunits; subunit++) { 292214761Sn_hibma sc[subunit].sc_subunit = subunit; 293214761Sn_hibma sc[subunit].sc_super = ssc; 294214761Sn_hibma sc[subunit].sc_mtx = mtx; 295214761Sn_hibma sc[subunit].sc_parent = parent; 296214761Sn_hibma sc[subunit].sc_callback = callback; 297184610Salfred 298214761Sn_hibma error = ucom_attach_tty(ssc, &sc[subunit]); 299184610Salfred if (error) { 300214761Sn_hibma ucom_detach(ssc, &sc[0]); 301188413Sthompsa return (error); 302184610Salfred } 303239179Shselasky /* increment reference count */ 304239179Shselasky ucom_ref(ssc); 305239179Shselasky 306239179Shselasky /* set subunit attached */ 307214761Sn_hibma sc[subunit].sc_flag |= UCOM_FLAG_ATTACHED; 308184610Salfred } 309214761Sn_hibma 310214831Sn_hibma DPRINTF("tp = %p, unit = %d, subunits = %d\n", 311214831Sn_hibma sc->sc_tty, ssc->sc_unit, ssc->sc_subunits); 312214761Sn_hibma 313188413Sthompsa return (0); 314184610Salfred} 315184610Salfred 316188413Sthompsa/* 317239299Shselasky * The following function will do nothing if the structure pointed to 318239299Shselasky * by "ssc" and "sc" is zero or has already been detached. 319184610Salfred */ 320184610Salfredvoid 321214761Sn_hibmaucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc) 322184610Salfred{ 323233774Shselasky int subunit; 324184610Salfred 325239299Shselasky if (!(ssc->sc_flag & UCOM_FLAG_ATTACHED)) 326226219Shselasky return; /* not initialized */ 327226219Shselasky 328230209Shselasky if (ssc->sc_sysctl_ttyname != NULL) { 329230209Shselasky sysctl_remove_oid(ssc->sc_sysctl_ttyname, 1, 0); 330230209Shselasky ssc->sc_sysctl_ttyname = NULL; 331230204Shselasky } 332230204Shselasky 333230204Shselasky if (ssc->sc_sysctl_ttyports != NULL) { 334230204Shselasky sysctl_remove_oid(ssc->sc_sysctl_ttyports, 1, 0); 335230204Shselasky ssc->sc_sysctl_ttyports = NULL; 336230204Shselasky } 337230204Shselasky 338194228Sthompsa usb_proc_drain(&ssc->sc_tq); 339184610Salfred 340214831Sn_hibma for (subunit = 0; subunit < ssc->sc_subunits; subunit++) { 341214761Sn_hibma if (sc[subunit].sc_flag & UCOM_FLAG_ATTACHED) { 342184610Salfred 343239179Shselasky ucom_detach_tty(ssc, &sc[subunit]); 344184610Salfred 345214761Sn_hibma /* avoid duplicate detach */ 346214761Sn_hibma sc[subunit].sc_flag &= ~UCOM_FLAG_ATTACHED; 347184610Salfred } 348184610Salfred } 349194228Sthompsa usb_proc_free(&ssc->sc_tq); 350239179Shselasky 351239299Shselasky ucom_unref(ssc); 352239299Shselasky 353239299Shselasky if (ssc->sc_flag & UCOM_FLAG_WAIT_REFS) 354239179Shselasky ucom_drain(ssc); 355239299Shselasky 356239299Shselasky /* make sure we don't detach twice */ 357239299Shselasky ssc->sc_flag &= ~UCOM_FLAG_ATTACHED; 358184610Salfred} 359184610Salfred 360239179Shselaskyvoid 361239179Shselaskyucom_drain(struct ucom_super_softc *ssc) 362239179Shselasky{ 363239179Shselasky mtx_lock(&ucom_mtx); 364239299Shselasky while (ssc->sc_refs > 0) { 365239179Shselasky printf("ucom: Waiting for a TTY device to close.\n"); 366239179Shselasky usb_pause_mtx(&ucom_mtx, hz); 367239179Shselasky } 368239179Shselasky mtx_unlock(&ucom_mtx); 369239179Shselasky} 370239179Shselasky 371239179Shselaskyvoid 372239179Shselaskyucom_drain_all(void *arg) 373239179Shselasky{ 374239179Shselasky mtx_lock(&ucom_mtx); 375239179Shselasky while (ucom_close_refs > 0) { 376239179Shselasky printf("ucom: Waiting for all detached TTY " 377239179Shselasky "devices to have open fds closed.\n"); 378239179Shselasky usb_pause_mtx(&ucom_mtx, hz); 379239179Shselasky } 380239179Shselasky mtx_unlock(&ucom_mtx); 381239179Shselasky} 382239179Shselasky 383184610Salfredstatic int 384214761Sn_hibmaucom_attach_tty(struct ucom_super_softc *ssc, struct ucom_softc *sc) 385184610Salfred{ 386184610Salfred struct tty *tp; 387214831Sn_hibma char buf[32]; /* temporary TTY device name buffer */ 388184610Salfred 389194228Sthompsa tp = tty_alloc_mutex(&ucom_class, sc, sc->sc_mtx); 390214761Sn_hibma if (tp == NULL) 391214761Sn_hibma return (ENOMEM); 392184610Salfred 393184610Salfred /* Check if the client has a custom TTY name */ 394214761Sn_hibma buf[0] = '\0'; 395194228Sthompsa if (sc->sc_callback->ucom_tty_name) { 396194228Sthompsa sc->sc_callback->ucom_tty_name(sc, buf, 397214761Sn_hibma sizeof(buf), ssc->sc_unit, sc->sc_subunit); 398184610Salfred } 399184610Salfred if (buf[0] == 0) { 400184610Salfred /* Use default TTY name */ 401214761Sn_hibma if (ssc->sc_subunits > 1) { 402188413Sthompsa /* multiple modems in one */ 403214843Sn_hibma snprintf(buf, sizeof(buf), UCOM_TTY_PREFIX "%u.%u", 404214761Sn_hibma ssc->sc_unit, sc->sc_subunit); 405188413Sthompsa } else { 406188413Sthompsa /* single modem */ 407214843Sn_hibma snprintf(buf, sizeof(buf), UCOM_TTY_PREFIX "%u", 408214843Sn_hibma ssc->sc_unit); 409184610Salfred } 410184610Salfred } 411184610Salfred tty_makedev(tp, NULL, "%s", buf); 412184610Salfred 413184610Salfred sc->sc_tty = tp; 414184610Salfred 415184610Salfred DPRINTF("ttycreate: %s\n", buf); 416184610Salfred 417197570Sthompsa /* Check if this device should be a console */ 418197570Sthompsa if ((ucom_cons_softc == NULL) && 419214761Sn_hibma (ssc->sc_unit == ucom_cons_unit) && 420214761Sn_hibma (sc->sc_subunit == ucom_cons_subunit)) { 421197570Sthompsa 422242695Shselasky DPRINTF("unit %d subunit %d is console", 423242695Shselasky ssc->sc_unit, sc->sc_subunit); 424214761Sn_hibma 425197570Sthompsa ucom_cons_softc = sc; 426197570Sthompsa 427242695Shselasky tty_init_console(tp, ucom_cons_baud); 428197570Sthompsa 429239179Shselasky UCOM_MTX_LOCK(ucom_cons_softc); 430197570Sthompsa ucom_cons_rx_low = 0; 431197570Sthompsa ucom_cons_rx_high = 0; 432197570Sthompsa ucom_cons_tx_low = 0; 433197570Sthompsa ucom_cons_tx_high = 0; 434197570Sthompsa sc->sc_flag |= UCOM_FLAG_CONSOLE; 435197570Sthompsa ucom_open(ucom_cons_softc->sc_tty); 436242695Shselasky ucom_param(ucom_cons_softc->sc_tty, &tp->t_termios_init_in); 437239179Shselasky UCOM_MTX_UNLOCK(ucom_cons_softc); 438197570Sthompsa } 439214761Sn_hibma 440214761Sn_hibma return (0); 441184610Salfred} 442184610Salfred 443184610Salfredstatic void 444239179Shselaskyucom_detach_tty(struct ucom_super_softc *ssc, struct ucom_softc *sc) 445184610Salfred{ 446184610Salfred struct tty *tp = sc->sc_tty; 447184610Salfred 448184610Salfred DPRINTF("sc = %p, tp = %p\n", sc, sc->sc_tty); 449184610Salfred 450197570Sthompsa if (sc->sc_flag & UCOM_FLAG_CONSOLE) { 451239179Shselasky UCOM_MTX_LOCK(ucom_cons_softc); 452197570Sthompsa ucom_close(ucom_cons_softc->sc_tty); 453214761Sn_hibma sc->sc_flag &= ~UCOM_FLAG_CONSOLE; 454239179Shselasky UCOM_MTX_UNLOCK(ucom_cons_softc); 455197570Sthompsa ucom_cons_softc = NULL; 456197570Sthompsa } 457197570Sthompsa 458184610Salfred /* the config thread has been stopped when we get here */ 459184610Salfred 460239179Shselasky UCOM_MTX_LOCK(sc); 461184610Salfred sc->sc_flag |= UCOM_FLAG_GONE; 462197570Sthompsa sc->sc_flag &= ~(UCOM_FLAG_HL_READY | UCOM_FLAG_LL_READY); 463239179Shselasky UCOM_MTX_UNLOCK(sc); 464239179Shselasky 465184610Salfred if (tp) { 466239179Shselasky mtx_lock(&ucom_mtx); 467239179Shselasky ucom_close_refs++; 468239179Shselasky mtx_unlock(&ucom_mtx); 469239179Shselasky 470184610Salfred tty_lock(tp); 471184610Salfred 472194228Sthompsa ucom_close(tp); /* close, if any */ 473184610Salfred 474184610Salfred tty_rel_gone(tp); 475184610Salfred 476239179Shselasky UCOM_MTX_LOCK(sc); 477184610Salfred /* 478184610Salfred * make sure that read and write transfers are stopped 479184610Salfred */ 480239179Shselasky if (sc->sc_callback->ucom_stop_read) 481194228Sthompsa (sc->sc_callback->ucom_stop_read) (sc); 482239179Shselasky if (sc->sc_callback->ucom_stop_write) 483194228Sthompsa (sc->sc_callback->ucom_stop_write) (sc); 484239179Shselasky UCOM_MTX_UNLOCK(sc); 485184610Salfred } 486184610Salfred} 487184610Salfred 488214843Sn_hibmavoid 489214843Sn_hibmaucom_set_pnpinfo_usb(struct ucom_super_softc *ssc, device_t dev) 490214843Sn_hibma{ 491230204Shselasky char buf[64]; 492230204Shselasky uint8_t iface_index; 493230204Shselasky struct usb_attach_arg *uaa; 494214843Sn_hibma 495230209Shselasky snprintf(buf, sizeof(buf), "ttyname=" UCOM_TTY_PREFIX 496230209Shselasky "%d ttyports=%d", ssc->sc_unit, ssc->sc_subunits); 497214843Sn_hibma 498230204Shselasky /* Store the PNP info in the first interface for the device */ 499230204Shselasky uaa = device_get_ivars(dev); 500230204Shselasky iface_index = uaa->info.bIfaceIndex; 501214843Sn_hibma 502230204Shselasky if (usbd_set_pnpinfo(uaa->device, iface_index, buf) != 0) 503230204Shselasky device_printf(dev, "Could not set PNP info\n"); 504230204Shselasky 505230204Shselasky /* 506230209Shselasky * The following information is also replicated in the PNP-info 507230204Shselasky * string which is registered above: 508230204Shselasky */ 509230209Shselasky if (ssc->sc_sysctl_ttyname == NULL) { 510230209Shselasky ssc->sc_sysctl_ttyname = SYSCTL_ADD_STRING(NULL, 511230204Shselasky SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 512230209Shselasky OID_AUTO, "ttyname", CTLFLAG_RD, ssc->sc_ttyname, 0, 513230209Shselasky "TTY device basename"); 514230204Shselasky } 515230204Shselasky if (ssc->sc_sysctl_ttyports == NULL) { 516230204Shselasky ssc->sc_sysctl_ttyports = SYSCTL_ADD_INT(NULL, 517230204Shselasky SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 518230204Shselasky OID_AUTO, "ttyports", CTLFLAG_RD, 519230204Shselasky NULL, ssc->sc_subunits, "Number of ports"); 520230204Shselasky } 521214843Sn_hibma} 522214843Sn_hibma 523184610Salfredstatic void 524194228Sthompsaucom_queue_command(struct ucom_softc *sc, 525193045Sthompsa usb_proc_callback_t *fn, struct termios *pt, 526192984Sthompsa struct usb_proc_msg *t0, struct usb_proc_msg *t1) 527184610Salfred{ 528192984Sthompsa struct ucom_super_softc *ssc = sc->sc_super; 529192984Sthompsa struct ucom_param_task *task; 530187176Sthompsa 531239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 532188413Sthompsa 533194228Sthompsa if (usb_proc_is_gone(&ssc->sc_tq)) { 534187176Sthompsa DPRINTF("proc is gone\n"); 535188413Sthompsa return; /* nothing to do */ 536187176Sthompsa } 537188413Sthompsa /* 538188413Sthompsa * NOTE: The task cannot get executed before we drop the 539188413Sthompsa * "sc_mtx" mutex. It is safe to update fields in the message 540188413Sthompsa * structure after that the message got queued. 541188413Sthompsa */ 542192984Sthompsa task = (struct ucom_param_task *) 543194228Sthompsa usb_proc_msignal(&ssc->sc_tq, t0, t1); 544187176Sthompsa 545188413Sthompsa /* Setup callback and softc pointers */ 546188413Sthompsa task->hdr.pm_callback = fn; 547188413Sthompsa task->sc = sc; 548184610Salfred 549188413Sthompsa /* 550188413Sthompsa * Make a copy of the termios. This field is only present if 551188413Sthompsa * the "pt" field is not NULL. 552188413Sthompsa */ 553188413Sthompsa if (pt != NULL) 554188413Sthompsa task->termios_copy = *pt; 555184610Salfred 556188413Sthompsa /* 557188413Sthompsa * Closing the device should be synchronous. 558188413Sthompsa */ 559194228Sthompsa if (fn == ucom_cfg_close) 560194228Sthompsa usb_proc_mwait(&ssc->sc_tq, t0, t1); 561188413Sthompsa 562190742Sthompsa /* 563190742Sthompsa * In case of multiple configure requests, 564190742Sthompsa * keep track of the last one! 565190742Sthompsa */ 566194228Sthompsa if (fn == ucom_cfg_start_transfers) 567190742Sthompsa sc->sc_last_start_xfer = &task->hdr; 568184610Salfred} 569184610Salfred 570184610Salfredstatic void 571194228Sthompsaucom_shutdown(struct ucom_softc *sc) 572184610Salfred{ 573184610Salfred struct tty *tp = sc->sc_tty; 574184610Salfred 575239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 576184610Salfred 577184610Salfred DPRINTF("\n"); 578184610Salfred 579184610Salfred /* 580184610Salfred * Hang up if necessary: 581184610Salfred */ 582184610Salfred if (tp->t_termios.c_cflag & HUPCL) { 583194228Sthompsa ucom_modem(tp, 0, SER_DTR); 584184610Salfred } 585184610Salfred} 586184610Salfred 587184610Salfred/* 588184610Salfred * Return values: 589184610Salfred * 0: normal 590188413Sthompsa * else: taskqueue is draining or gone 591184610Salfred */ 592184610Salfreduint8_t 593194228Sthompsaucom_cfg_is_gone(struct ucom_softc *sc) 594184610Salfred{ 595192984Sthompsa struct ucom_super_softc *ssc = sc->sc_super; 596184610Salfred 597194228Sthompsa return (usb_proc_is_gone(&ssc->sc_tq)); 598184610Salfred} 599184610Salfred 600184610Salfredstatic void 601194228Sthompsaucom_cfg_start_transfers(struct usb_proc_msg *_task) 602184610Salfred{ 603192984Sthompsa struct ucom_cfg_task *task = 604192984Sthompsa (struct ucom_cfg_task *)_task; 605192984Sthompsa struct ucom_softc *sc = task->sc; 606187176Sthompsa 607184610Salfred if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) { 608184610Salfred return; 609184610Salfred } 610184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 611184610Salfred /* TTY device closed */ 612184610Salfred return; 613184610Salfred } 614184610Salfred 615190742Sthompsa if (_task == sc->sc_last_start_xfer) 616190742Sthompsa sc->sc_flag |= UCOM_FLAG_GP_DATA; 617190742Sthompsa 618194228Sthompsa if (sc->sc_callback->ucom_start_read) { 619194228Sthompsa (sc->sc_callback->ucom_start_read) (sc); 620184610Salfred } 621194228Sthompsa if (sc->sc_callback->ucom_start_write) { 622194228Sthompsa (sc->sc_callback->ucom_start_write) (sc); 623184610Salfred } 624184610Salfred} 625184610Salfred 626184610Salfredstatic void 627194228Sthompsaucom_start_transfers(struct ucom_softc *sc) 628184610Salfred{ 629184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 630184610Salfred return; 631184610Salfred } 632184610Salfred /* 633188413Sthompsa * Make sure that data transfers are started in both 634188413Sthompsa * directions: 635184610Salfred */ 636194228Sthompsa if (sc->sc_callback->ucom_start_read) { 637194228Sthompsa (sc->sc_callback->ucom_start_read) (sc); 638184610Salfred } 639194228Sthompsa if (sc->sc_callback->ucom_start_write) { 640194228Sthompsa (sc->sc_callback->ucom_start_write) (sc); 641184610Salfred } 642184610Salfred} 643184610Salfred 644184610Salfredstatic void 645194228Sthompsaucom_cfg_open(struct usb_proc_msg *_task) 646184610Salfred{ 647192984Sthompsa struct ucom_cfg_task *task = 648192984Sthompsa (struct ucom_cfg_task *)_task; 649192984Sthompsa struct ucom_softc *sc = task->sc; 650187176Sthompsa 651184610Salfred DPRINTF("\n"); 652184610Salfred 653184610Salfred if (sc->sc_flag & UCOM_FLAG_LL_READY) { 654184610Salfred 655184610Salfred /* already opened */ 656184610Salfred 657184610Salfred } else { 658184610Salfred 659184610Salfred sc->sc_flag |= UCOM_FLAG_LL_READY; 660184610Salfred 661194228Sthompsa if (sc->sc_callback->ucom_cfg_open) { 662194228Sthompsa (sc->sc_callback->ucom_cfg_open) (sc); 663184610Salfred 664184610Salfred /* wait a little */ 665194228Sthompsa usb_pause_mtx(sc->sc_mtx, hz / 10); 666184610Salfred } 667184610Salfred } 668184610Salfred} 669184610Salfred 670184610Salfredstatic int 671194228Sthompsaucom_open(struct tty *tp) 672184610Salfred{ 673192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 674184610Salfred int error; 675184610Salfred 676239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 677184610Salfred 678184610Salfred if (sc->sc_flag & UCOM_FLAG_GONE) { 679184610Salfred return (ENXIO); 680184610Salfred } 681184610Salfred if (sc->sc_flag & UCOM_FLAG_HL_READY) { 682184610Salfred /* already opened */ 683184610Salfred return (0); 684184610Salfred } 685184610Salfred DPRINTF("tp = %p\n", tp); 686184610Salfred 687194228Sthompsa if (sc->sc_callback->ucom_pre_open) { 688184610Salfred /* 689184610Salfred * give the lower layer a chance to disallow TTY open, for 690184610Salfred * example if the device is not present: 691184610Salfred */ 692194228Sthompsa error = (sc->sc_callback->ucom_pre_open) (sc); 693184610Salfred if (error) { 694184610Salfred return (error); 695184610Salfred } 696184610Salfred } 697184610Salfred sc->sc_flag |= UCOM_FLAG_HL_READY; 698184610Salfred 699184610Salfred /* Disable transfers */ 700184610Salfred sc->sc_flag &= ~UCOM_FLAG_GP_DATA; 701184610Salfred 702184610Salfred sc->sc_lsr = 0; 703184610Salfred sc->sc_msr = 0; 704184610Salfred sc->sc_mcr = 0; 705184610Salfred 706188413Sthompsa /* reset programmed line state */ 707188413Sthompsa sc->sc_pls_curr = 0; 708188413Sthompsa sc->sc_pls_set = 0; 709188413Sthompsa sc->sc_pls_clr = 0; 710184610Salfred 711242619Shselasky /* reset jitter buffer */ 712242619Shselasky sc->sc_jitterbuf_in = 0; 713242619Shselasky sc->sc_jitterbuf_out = 0; 714242619Shselasky 715194228Sthompsa ucom_queue_command(sc, ucom_cfg_open, NULL, 716188413Sthompsa &sc->sc_open_task[0].hdr, 717188413Sthompsa &sc->sc_open_task[1].hdr); 718184610Salfred 719188413Sthompsa /* Queue transfer enable command last */ 720194228Sthompsa ucom_queue_command(sc, ucom_cfg_start_transfers, NULL, 721188413Sthompsa &sc->sc_start_task[0].hdr, 722188413Sthompsa &sc->sc_start_task[1].hdr); 723188413Sthompsa 724194228Sthompsa ucom_modem(tp, SER_DTR | SER_RTS, 0); 725184610Salfred 726197570Sthompsa ucom_ring(sc, 0); 727197570Sthompsa 728194228Sthompsa ucom_break(sc, 0); 729184610Salfred 730194228Sthompsa ucom_status_change(sc); 731184610Salfred 732184610Salfred return (0); 733184610Salfred} 734184610Salfred 735184610Salfredstatic void 736194228Sthompsaucom_cfg_close(struct usb_proc_msg *_task) 737184610Salfred{ 738192984Sthompsa struct ucom_cfg_task *task = 739192984Sthompsa (struct ucom_cfg_task *)_task; 740192984Sthompsa struct ucom_softc *sc = task->sc; 741187176Sthompsa 742184610Salfred DPRINTF("\n"); 743184610Salfred 744184610Salfred if (sc->sc_flag & UCOM_FLAG_LL_READY) { 745192820Sthompsa sc->sc_flag &= ~UCOM_FLAG_LL_READY; 746194228Sthompsa if (sc->sc_callback->ucom_cfg_close) 747194228Sthompsa (sc->sc_callback->ucom_cfg_close) (sc); 748184610Salfred } else { 749184610Salfred /* already closed */ 750184610Salfred } 751184610Salfred} 752184610Salfred 753184610Salfredstatic void 754194228Sthompsaucom_close(struct tty *tp) 755184610Salfred{ 756192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 757184610Salfred 758239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 759188413Sthompsa 760184610Salfred DPRINTF("tp=%p\n", tp); 761184610Salfred 762184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 763184610Salfred DPRINTF("tp=%p already closed\n", tp); 764184610Salfred return; 765184610Salfred } 766194228Sthompsa ucom_shutdown(sc); 767184610Salfred 768194228Sthompsa ucom_queue_command(sc, ucom_cfg_close, NULL, 769188413Sthompsa &sc->sc_close_task[0].hdr, 770188413Sthompsa &sc->sc_close_task[1].hdr); 771184610Salfred 772192820Sthompsa sc->sc_flag &= ~(UCOM_FLAG_HL_READY | UCOM_FLAG_RTS_IFLOW); 773184610Salfred 774194228Sthompsa if (sc->sc_callback->ucom_stop_read) { 775194228Sthompsa (sc->sc_callback->ucom_stop_read) (sc); 776184610Salfred } 777184610Salfred} 778184610Salfred 779242619Shselaskystatic void 780242619Shselaskyucom_inwakeup(struct tty *tp) 781242619Shselasky{ 782242619Shselasky struct ucom_softc *sc = tty_softc(tp); 783242619Shselasky uint16_t pos; 784242619Shselasky 785242619Shselasky if (sc == NULL) 786242619Shselasky return; 787242619Shselasky 788242703Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 789242619Shselasky 790242703Shselasky DPRINTF("tp=%p\n", tp); 791242702Shselasky 792242619Shselasky if (ttydisc_can_bypass(tp) != 0 || 793244489Shselasky (sc->sc_flag & UCOM_FLAG_HL_READY) == 0 || 794244489Shselasky (sc->sc_flag & UCOM_FLAG_INWAKEUP) != 0) { 795242619Shselasky return; 796242619Shselasky } 797242619Shselasky 798244489Shselasky /* prevent recursion */ 799244489Shselasky sc->sc_flag |= UCOM_FLAG_INWAKEUP; 800244489Shselasky 801242619Shselasky pos = sc->sc_jitterbuf_out; 802242619Shselasky 803242619Shselasky while (sc->sc_jitterbuf_in != pos) { 804242619Shselasky int c; 805242619Shselasky 806242619Shselasky c = (char)sc->sc_jitterbuf[pos]; 807242619Shselasky 808242619Shselasky if (ttydisc_rint(tp, c, 0) == -1) 809242619Shselasky break; 810242619Shselasky pos++; 811242619Shselasky if (pos >= UCOM_JITTERBUF_SIZE) 812242619Shselasky pos -= UCOM_JITTERBUF_SIZE; 813242619Shselasky } 814242619Shselasky 815242619Shselasky sc->sc_jitterbuf_out = pos; 816242619Shselasky 817242619Shselasky /* clear RTS in async fashion */ 818242619Shselasky if ((sc->sc_jitterbuf_in == pos) && 819242619Shselasky (sc->sc_flag & UCOM_FLAG_RTS_IFLOW)) 820242619Shselasky ucom_rts(sc, 0); 821244489Shselasky 822244489Shselasky sc->sc_flag &= ~UCOM_FLAG_INWAKEUP; 823242619Shselasky} 824242619Shselasky 825184610Salfredstatic int 826194228Sthompsaucom_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td) 827184610Salfred{ 828192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 829184610Salfred int error; 830184610Salfred 831239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 832184610Salfred 833184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 834184610Salfred return (EIO); 835184610Salfred } 836184610Salfred DPRINTF("cmd = 0x%08lx\n", cmd); 837184610Salfred 838184610Salfred switch (cmd) { 839197570Sthompsa#if 0 840197570Sthompsa case TIOCSRING: 841197570Sthompsa ucom_ring(sc, 1); 842197570Sthompsa error = 0; 843197570Sthompsa break; 844197570Sthompsa case TIOCCRING: 845197570Sthompsa ucom_ring(sc, 0); 846197570Sthompsa error = 0; 847197570Sthompsa break; 848197570Sthompsa#endif 849184610Salfred case TIOCSBRK: 850194228Sthompsa ucom_break(sc, 1); 851184610Salfred error = 0; 852184610Salfred break; 853184610Salfred case TIOCCBRK: 854194228Sthompsa ucom_break(sc, 0); 855184610Salfred error = 0; 856184610Salfred break; 857184610Salfred default: 858194228Sthompsa if (sc->sc_callback->ucom_ioctl) { 859194228Sthompsa error = (sc->sc_callback->ucom_ioctl) 860184610Salfred (sc, cmd, data, 0, td); 861184610Salfred } else { 862184610Salfred error = ENOIOCTL; 863184610Salfred } 864184610Salfred break; 865184610Salfred } 866184610Salfred return (error); 867184610Salfred} 868184610Salfred 869184610Salfredstatic int 870194228Sthompsaucom_modem(struct tty *tp, int sigon, int sigoff) 871184610Salfred{ 872192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 873184610Salfred uint8_t onoff; 874184610Salfred 875239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 876184610Salfred 877184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 878184610Salfred return (0); 879184610Salfred } 880184610Salfred if ((sigon == 0) && (sigoff == 0)) { 881184610Salfred 882184610Salfred if (sc->sc_mcr & SER_DTR) { 883184610Salfred sigon |= SER_DTR; 884184610Salfred } 885184610Salfred if (sc->sc_mcr & SER_RTS) { 886184610Salfred sigon |= SER_RTS; 887184610Salfred } 888184610Salfred if (sc->sc_msr & SER_CTS) { 889184610Salfred sigon |= SER_CTS; 890184610Salfred } 891184610Salfred if (sc->sc_msr & SER_DCD) { 892184610Salfred sigon |= SER_DCD; 893184610Salfred } 894184610Salfred if (sc->sc_msr & SER_DSR) { 895184610Salfred sigon |= SER_DSR; 896184610Salfred } 897184610Salfred if (sc->sc_msr & SER_RI) { 898184610Salfred sigon |= SER_RI; 899184610Salfred } 900184610Salfred return (sigon); 901184610Salfred } 902184610Salfred if (sigon & SER_DTR) { 903184610Salfred sc->sc_mcr |= SER_DTR; 904184610Salfred } 905184610Salfred if (sigoff & SER_DTR) { 906184610Salfred sc->sc_mcr &= ~SER_DTR; 907184610Salfred } 908184610Salfred if (sigon & SER_RTS) { 909184610Salfred sc->sc_mcr |= SER_RTS; 910184610Salfred } 911184610Salfred if (sigoff & SER_RTS) { 912184610Salfred sc->sc_mcr &= ~SER_RTS; 913184610Salfred } 914184610Salfred onoff = (sc->sc_mcr & SER_DTR) ? 1 : 0; 915194228Sthompsa ucom_dtr(sc, onoff); 916184610Salfred 917184610Salfred onoff = (sc->sc_mcr & SER_RTS) ? 1 : 0; 918194228Sthompsa ucom_rts(sc, onoff); 919184610Salfred 920184610Salfred return (0); 921184610Salfred} 922184610Salfred 923184610Salfredstatic void 924194228Sthompsaucom_cfg_line_state(struct usb_proc_msg *_task) 925184610Salfred{ 926192984Sthompsa struct ucom_cfg_task *task = 927192984Sthompsa (struct ucom_cfg_task *)_task; 928192984Sthompsa struct ucom_softc *sc = task->sc; 929188413Sthompsa uint8_t notch_bits; 930188413Sthompsa uint8_t any_bits; 931188413Sthompsa uint8_t prev_value; 932188413Sthompsa uint8_t last_value; 933188413Sthompsa uint8_t mask; 934187176Sthompsa 935184610Salfred if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) { 936184610Salfred return; 937184610Salfred } 938184610Salfred 939188413Sthompsa mask = 0; 940188413Sthompsa /* compute callback mask */ 941194228Sthompsa if (sc->sc_callback->ucom_cfg_set_dtr) 942188413Sthompsa mask |= UCOM_LS_DTR; 943194228Sthompsa if (sc->sc_callback->ucom_cfg_set_rts) 944188413Sthompsa mask |= UCOM_LS_RTS; 945194228Sthompsa if (sc->sc_callback->ucom_cfg_set_break) 946188413Sthompsa mask |= UCOM_LS_BREAK; 947197570Sthompsa if (sc->sc_callback->ucom_cfg_set_ring) 948197570Sthompsa mask |= UCOM_LS_RING; 949184610Salfred 950188413Sthompsa /* compute the bits we are to program */ 951188413Sthompsa notch_bits = (sc->sc_pls_set & sc->sc_pls_clr) & mask; 952188413Sthompsa any_bits = (sc->sc_pls_set | sc->sc_pls_clr) & mask; 953188413Sthompsa prev_value = sc->sc_pls_curr ^ notch_bits; 954188413Sthompsa last_value = sc->sc_pls_curr; 955187176Sthompsa 956188413Sthompsa /* reset programmed line state */ 957188413Sthompsa sc->sc_pls_curr = 0; 958188413Sthompsa sc->sc_pls_set = 0; 959188413Sthompsa sc->sc_pls_clr = 0; 960188413Sthompsa 961250576Seadler /* ensure that we don't lose any levels */ 962188413Sthompsa if (notch_bits & UCOM_LS_DTR) 963194228Sthompsa sc->sc_callback->ucom_cfg_set_dtr(sc, 964188413Sthompsa (prev_value & UCOM_LS_DTR) ? 1 : 0); 965188413Sthompsa if (notch_bits & UCOM_LS_RTS) 966194228Sthompsa sc->sc_callback->ucom_cfg_set_rts(sc, 967188413Sthompsa (prev_value & UCOM_LS_RTS) ? 1 : 0); 968188413Sthompsa if (notch_bits & UCOM_LS_BREAK) 969194228Sthompsa sc->sc_callback->ucom_cfg_set_break(sc, 970188413Sthompsa (prev_value & UCOM_LS_BREAK) ? 1 : 0); 971197570Sthompsa if (notch_bits & UCOM_LS_RING) 972197570Sthompsa sc->sc_callback->ucom_cfg_set_ring(sc, 973197570Sthompsa (prev_value & UCOM_LS_RING) ? 1 : 0); 974188413Sthompsa 975188413Sthompsa /* set last value */ 976188413Sthompsa if (any_bits & UCOM_LS_DTR) 977194228Sthompsa sc->sc_callback->ucom_cfg_set_dtr(sc, 978188413Sthompsa (last_value & UCOM_LS_DTR) ? 1 : 0); 979188413Sthompsa if (any_bits & UCOM_LS_RTS) 980194228Sthompsa sc->sc_callback->ucom_cfg_set_rts(sc, 981188413Sthompsa (last_value & UCOM_LS_RTS) ? 1 : 0); 982188413Sthompsa if (any_bits & UCOM_LS_BREAK) 983194228Sthompsa sc->sc_callback->ucom_cfg_set_break(sc, 984188413Sthompsa (last_value & UCOM_LS_BREAK) ? 1 : 0); 985197570Sthompsa if (any_bits & UCOM_LS_RING) 986197570Sthompsa sc->sc_callback->ucom_cfg_set_ring(sc, 987197570Sthompsa (last_value & UCOM_LS_RING) ? 1 : 0); 988187176Sthompsa} 989187176Sthompsa 990187176Sthompsastatic void 991194228Sthompsaucom_line_state(struct ucom_softc *sc, 992188413Sthompsa uint8_t set_bits, uint8_t clear_bits) 993184610Salfred{ 994239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 995184610Salfred 996184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 997184610Salfred return; 998184610Salfred } 999184610Salfred 1000188413Sthompsa DPRINTF("on=0x%02x, off=0x%02x\n", set_bits, clear_bits); 1001184610Salfred 1002188413Sthompsa /* update current programmed line state */ 1003188413Sthompsa sc->sc_pls_curr |= set_bits; 1004188413Sthompsa sc->sc_pls_curr &= ~clear_bits; 1005188413Sthompsa sc->sc_pls_set |= set_bits; 1006188413Sthompsa sc->sc_pls_clr |= clear_bits; 1007187176Sthompsa 1008188413Sthompsa /* defer driver programming */ 1009194228Sthompsa ucom_queue_command(sc, ucom_cfg_line_state, NULL, 1010188413Sthompsa &sc->sc_line_state_task[0].hdr, 1011188413Sthompsa &sc->sc_line_state_task[1].hdr); 1012184610Salfred} 1013184610Salfred 1014184610Salfredstatic void 1015197570Sthompsaucom_ring(struct ucom_softc *sc, uint8_t onoff) 1016197570Sthompsa{ 1017197570Sthompsa DPRINTF("onoff = %d\n", onoff); 1018197570Sthompsa 1019197570Sthompsa if (onoff) 1020197570Sthompsa ucom_line_state(sc, UCOM_LS_RING, 0); 1021197570Sthompsa else 1022197570Sthompsa ucom_line_state(sc, 0, UCOM_LS_RING); 1023197570Sthompsa} 1024197570Sthompsa 1025197570Sthompsastatic void 1026194228Sthompsaucom_break(struct ucom_softc *sc, uint8_t onoff) 1027187176Sthompsa{ 1028188413Sthompsa DPRINTF("onoff = %d\n", onoff); 1029187176Sthompsa 1030188413Sthompsa if (onoff) 1031194228Sthompsa ucom_line_state(sc, UCOM_LS_BREAK, 0); 1032188413Sthompsa else 1033194228Sthompsa ucom_line_state(sc, 0, UCOM_LS_BREAK); 1034187176Sthompsa} 1035187176Sthompsa 1036187176Sthompsastatic void 1037194228Sthompsaucom_dtr(struct ucom_softc *sc, uint8_t onoff) 1038184610Salfred{ 1039184610Salfred DPRINTF("onoff = %d\n", onoff); 1040184610Salfred 1041188413Sthompsa if (onoff) 1042194228Sthompsa ucom_line_state(sc, UCOM_LS_DTR, 0); 1043188413Sthompsa else 1044194228Sthompsa ucom_line_state(sc, 0, UCOM_LS_DTR); 1045184610Salfred} 1046184610Salfred 1047184610Salfredstatic void 1048194228Sthompsaucom_rts(struct ucom_softc *sc, uint8_t onoff) 1049184610Salfred{ 1050184610Salfred DPRINTF("onoff = %d\n", onoff); 1051184610Salfred 1052188413Sthompsa if (onoff) 1053194228Sthompsa ucom_line_state(sc, UCOM_LS_RTS, 0); 1054188413Sthompsa else 1055194228Sthompsa ucom_line_state(sc, 0, UCOM_LS_RTS); 1056184610Salfred} 1057184610Salfred 1058184610Salfredstatic void 1059194228Sthompsaucom_cfg_status_change(struct usb_proc_msg *_task) 1060184610Salfred{ 1061192984Sthompsa struct ucom_cfg_task *task = 1062192984Sthompsa (struct ucom_cfg_task *)_task; 1063192984Sthompsa struct ucom_softc *sc = task->sc; 1064184610Salfred struct tty *tp; 1065184610Salfred uint8_t new_msr; 1066184610Salfred uint8_t new_lsr; 1067184610Salfred uint8_t onoff; 1068213872Shselasky uint8_t lsr_delta; 1069184610Salfred 1070184610Salfred tp = sc->sc_tty; 1071184610Salfred 1072239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1073184610Salfred 1074184610Salfred if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) { 1075184610Salfred return; 1076184610Salfred } 1077194228Sthompsa if (sc->sc_callback->ucom_cfg_get_status == NULL) { 1078184610Salfred return; 1079184610Salfred } 1080184610Salfred /* get status */ 1081184610Salfred 1082184610Salfred new_msr = 0; 1083184610Salfred new_lsr = 0; 1084184610Salfred 1085194228Sthompsa (sc->sc_callback->ucom_cfg_get_status) (sc, &new_lsr, &new_msr); 1086184610Salfred 1087184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 1088184610Salfred /* TTY device closed */ 1089184610Salfred return; 1090184610Salfred } 1091184610Salfred onoff = ((sc->sc_msr ^ new_msr) & SER_DCD); 1092213872Shselasky lsr_delta = (sc->sc_lsr ^ new_lsr); 1093184610Salfred 1094184610Salfred sc->sc_msr = new_msr; 1095184610Salfred sc->sc_lsr = new_lsr; 1096184610Salfred 1097184610Salfred if (onoff) { 1098184610Salfred 1099184610Salfred onoff = (sc->sc_msr & SER_DCD) ? 1 : 0; 1100184610Salfred 1101184610Salfred DPRINTF("DCD changed to %d\n", onoff); 1102184610Salfred 1103184610Salfred ttydisc_modem(tp, onoff); 1104184610Salfred } 1105213872Shselasky 1106213872Shselasky if ((lsr_delta & ULSR_BI) && (sc->sc_lsr & ULSR_BI)) { 1107213872Shselasky 1108213872Shselasky DPRINTF("BREAK detected\n"); 1109213872Shselasky 1110213872Shselasky ttydisc_rint(tp, 0, TRE_BREAK); 1111213872Shselasky ttydisc_rint_done(tp); 1112213872Shselasky } 1113213872Shselasky 1114213872Shselasky if ((lsr_delta & ULSR_FE) && (sc->sc_lsr & ULSR_FE)) { 1115213872Shselasky 1116213872Shselasky DPRINTF("Frame error detected\n"); 1117213872Shselasky 1118213872Shselasky ttydisc_rint(tp, 0, TRE_FRAMING); 1119213872Shselasky ttydisc_rint_done(tp); 1120213872Shselasky } 1121213872Shselasky 1122213872Shselasky if ((lsr_delta & ULSR_PE) && (sc->sc_lsr & ULSR_PE)) { 1123213872Shselasky 1124213872Shselasky DPRINTF("Parity error detected\n"); 1125213872Shselasky 1126213872Shselasky ttydisc_rint(tp, 0, TRE_PARITY); 1127213872Shselasky ttydisc_rint_done(tp); 1128213872Shselasky } 1129184610Salfred} 1130184610Salfred 1131184610Salfredvoid 1132194228Sthompsaucom_status_change(struct ucom_softc *sc) 1133184610Salfred{ 1134239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1135184610Salfred 1136197570Sthompsa if (sc->sc_flag & UCOM_FLAG_CONSOLE) 1137197570Sthompsa return; /* not supported */ 1138197570Sthompsa 1139184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 1140184610Salfred return; 1141184610Salfred } 1142184610Salfred DPRINTF("\n"); 1143184610Salfred 1144194228Sthompsa ucom_queue_command(sc, ucom_cfg_status_change, NULL, 1145188413Sthompsa &sc->sc_status_task[0].hdr, 1146188413Sthompsa &sc->sc_status_task[1].hdr); 1147184610Salfred} 1148184610Salfred 1149184610Salfredstatic void 1150194228Sthompsaucom_cfg_param(struct usb_proc_msg *_task) 1151184610Salfred{ 1152192984Sthompsa struct ucom_param_task *task = 1153192984Sthompsa (struct ucom_param_task *)_task; 1154192984Sthompsa struct ucom_softc *sc = task->sc; 1155184610Salfred 1156184610Salfred if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) { 1157184610Salfred return; 1158184610Salfred } 1159194228Sthompsa if (sc->sc_callback->ucom_cfg_param == NULL) { 1160184610Salfred return; 1161184610Salfred } 1162184610Salfred 1163194228Sthompsa (sc->sc_callback->ucom_cfg_param) (sc, &task->termios_copy); 1164184610Salfred 1165184610Salfred /* wait a little */ 1166194228Sthompsa usb_pause_mtx(sc->sc_mtx, hz / 10); 1167184610Salfred} 1168184610Salfred 1169184610Salfredstatic int 1170194228Sthompsaucom_param(struct tty *tp, struct termios *t) 1171184610Salfred{ 1172192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 1173184610Salfred uint8_t opened; 1174184610Salfred int error; 1175184610Salfred 1176239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1177184610Salfred 1178184610Salfred opened = 0; 1179184610Salfred error = 0; 1180184610Salfred 1181184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 1182184610Salfred 1183184610Salfred /* XXX the TTY layer should call "open()" first! */ 1184242695Shselasky /* 1185242695Shselasky * Not quite: Its ordering is partly backwards, but 1186242695Shselasky * some parameters must be set early in ttydev_open(), 1187242695Shselasky * possibly before calling ttydevsw_open(). 1188242695Shselasky */ 1189194228Sthompsa error = ucom_open(tp); 1190242695Shselasky if (error) 1191184610Salfred goto done; 1192242695Shselasky 1193184610Salfred opened = 1; 1194184610Salfred } 1195184610Salfred DPRINTF("sc = %p\n", sc); 1196184610Salfred 1197184610Salfred /* Check requested parameters. */ 1198184610Salfred if (t->c_ispeed && (t->c_ispeed != t->c_ospeed)) { 1199242695Shselasky /* XXX c_ospeed == 0 is perfectly valid. */ 1200184610Salfred DPRINTF("mismatch ispeed and ospeed\n"); 1201184610Salfred error = EINVAL; 1202184610Salfred goto done; 1203184610Salfred } 1204184610Salfred t->c_ispeed = t->c_ospeed; 1205184610Salfred 1206194228Sthompsa if (sc->sc_callback->ucom_pre_param) { 1207184610Salfred /* Let the lower layer verify the parameters */ 1208194228Sthompsa error = (sc->sc_callback->ucom_pre_param) (sc, t); 1209184610Salfred if (error) { 1210184610Salfred DPRINTF("callback error = %d\n", error); 1211184610Salfred goto done; 1212184610Salfred } 1213184610Salfred } 1214184610Salfred 1215184610Salfred /* Disable transfers */ 1216184610Salfred sc->sc_flag &= ~UCOM_FLAG_GP_DATA; 1217184610Salfred 1218184610Salfred /* Queue baud rate programming command first */ 1219194228Sthompsa ucom_queue_command(sc, ucom_cfg_param, t, 1220188413Sthompsa &sc->sc_param_task[0].hdr, 1221188413Sthompsa &sc->sc_param_task[1].hdr); 1222184610Salfred 1223184610Salfred /* Queue transfer enable command last */ 1224194228Sthompsa ucom_queue_command(sc, ucom_cfg_start_transfers, NULL, 1225188413Sthompsa &sc->sc_start_task[0].hdr, 1226188413Sthompsa &sc->sc_start_task[1].hdr); 1227184610Salfred 1228184610Salfred if (t->c_cflag & CRTS_IFLOW) { 1229184610Salfred sc->sc_flag |= UCOM_FLAG_RTS_IFLOW; 1230184610Salfred } else if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW) { 1231184610Salfred sc->sc_flag &= ~UCOM_FLAG_RTS_IFLOW; 1232194228Sthompsa ucom_modem(tp, SER_RTS, 0); 1233184610Salfred } 1234184610Salfreddone: 1235184610Salfred if (error) { 1236184610Salfred if (opened) { 1237194228Sthompsa ucom_close(tp); 1238184610Salfred } 1239184610Salfred } 1240184610Salfred return (error); 1241184610Salfred} 1242184610Salfred 1243184610Salfredstatic void 1244194228Sthompsaucom_outwakeup(struct tty *tp) 1245184610Salfred{ 1246192984Sthompsa struct ucom_softc *sc = tty_softc(tp); 1247184610Salfred 1248239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1249184610Salfred 1250184610Salfred DPRINTF("sc = %p\n", sc); 1251184610Salfred 1252184610Salfred if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { 1253184610Salfred /* The higher layer is not ready */ 1254184610Salfred return; 1255184610Salfred } 1256194228Sthompsa ucom_start_transfers(sc); 1257184610Salfred} 1258184610Salfred 1259184610Salfred/*------------------------------------------------------------------------* 1260194228Sthompsa * ucom_get_data 1261184610Salfred * 1262184610Salfred * Return values: 1263184610Salfred * 0: No data is available. 1264184610Salfred * Else: Data is available. 1265184610Salfred *------------------------------------------------------------------------*/ 1266184610Salfreduint8_t 1267194228Sthompsaucom_get_data(struct ucom_softc *sc, struct usb_page_cache *pc, 1268184610Salfred uint32_t offset, uint32_t len, uint32_t *actlen) 1269184610Salfred{ 1270192984Sthompsa struct usb_page_search res; 1271184610Salfred struct tty *tp = sc->sc_tty; 1272184610Salfred uint32_t cnt; 1273184610Salfred uint32_t offset_orig; 1274184610Salfred 1275239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1276184610Salfred 1277197570Sthompsa if (sc->sc_flag & UCOM_FLAG_CONSOLE) { 1278197570Sthompsa unsigned int temp; 1279197570Sthompsa 1280197570Sthompsa /* get total TX length */ 1281197570Sthompsa 1282197570Sthompsa temp = ucom_cons_tx_high - ucom_cons_tx_low; 1283197570Sthompsa temp %= UCOM_CONS_BUFSIZE; 1284197570Sthompsa 1285197570Sthompsa /* limit TX length */ 1286197570Sthompsa 1287197570Sthompsa if (temp > (UCOM_CONS_BUFSIZE - ucom_cons_tx_low)) 1288197570Sthompsa temp = (UCOM_CONS_BUFSIZE - ucom_cons_tx_low); 1289197570Sthompsa 1290197570Sthompsa if (temp > len) 1291197570Sthompsa temp = len; 1292197570Sthompsa 1293197570Sthompsa /* copy in data */ 1294197570Sthompsa 1295197570Sthompsa usbd_copy_in(pc, offset, ucom_cons_tx_buf + ucom_cons_tx_low, temp); 1296197570Sthompsa 1297197570Sthompsa /* update counters */ 1298197570Sthompsa 1299197570Sthompsa ucom_cons_tx_low += temp; 1300197570Sthompsa ucom_cons_tx_low %= UCOM_CONS_BUFSIZE; 1301197570Sthompsa 1302197570Sthompsa /* store actual length */ 1303197570Sthompsa 1304197570Sthompsa *actlen = temp; 1305197570Sthompsa 1306197570Sthompsa return (temp ? 1 : 0); 1307197570Sthompsa } 1308197570Sthompsa 1309192820Sthompsa if (tty_gone(tp) || 1310192820Sthompsa !(sc->sc_flag & UCOM_FLAG_GP_DATA)) { 1311184610Salfred actlen[0] = 0; 1312184610Salfred return (0); /* multiport device polling */ 1313184610Salfred } 1314184610Salfred offset_orig = offset; 1315184610Salfred 1316184610Salfred while (len != 0) { 1317184610Salfred 1318194228Sthompsa usbd_get_page(pc, offset, &res); 1319184610Salfred 1320184610Salfred if (res.length > len) { 1321184610Salfred res.length = len; 1322184610Salfred } 1323184610Salfred /* copy data directly into USB buffer */ 1324184610Salfred cnt = ttydisc_getc(tp, res.buffer, res.length); 1325184610Salfred 1326184610Salfred offset += cnt; 1327184610Salfred len -= cnt; 1328184610Salfred 1329184610Salfred if (cnt < res.length) { 1330184610Salfred /* end of buffer */ 1331184610Salfred break; 1332184610Salfred } 1333184610Salfred } 1334184610Salfred 1335184610Salfred actlen[0] = offset - offset_orig; 1336184610Salfred 1337184610Salfred DPRINTF("cnt=%d\n", actlen[0]); 1338184610Salfred 1339184610Salfred if (actlen[0] == 0) { 1340184610Salfred return (0); 1341184610Salfred } 1342184610Salfred return (1); 1343184610Salfred} 1344184610Salfred 1345184610Salfredvoid 1346194228Sthompsaucom_put_data(struct ucom_softc *sc, struct usb_page_cache *pc, 1347184610Salfred uint32_t offset, uint32_t len) 1348184610Salfred{ 1349192984Sthompsa struct usb_page_search res; 1350184610Salfred struct tty *tp = sc->sc_tty; 1351184610Salfred char *buf; 1352184610Salfred uint32_t cnt; 1353184610Salfred 1354239179Shselasky UCOM_MTX_ASSERT(sc, MA_OWNED); 1355184610Salfred 1356197570Sthompsa if (sc->sc_flag & UCOM_FLAG_CONSOLE) { 1357197570Sthompsa unsigned int temp; 1358197570Sthompsa 1359197570Sthompsa /* get maximum RX length */ 1360197570Sthompsa 1361197570Sthompsa temp = (UCOM_CONS_BUFSIZE - 1) - ucom_cons_rx_high + ucom_cons_rx_low; 1362197570Sthompsa temp %= UCOM_CONS_BUFSIZE; 1363197570Sthompsa 1364197570Sthompsa /* limit RX length */ 1365197570Sthompsa 1366197570Sthompsa if (temp > (UCOM_CONS_BUFSIZE - ucom_cons_rx_high)) 1367197570Sthompsa temp = (UCOM_CONS_BUFSIZE - ucom_cons_rx_high); 1368197570Sthompsa 1369197570Sthompsa if (temp > len) 1370197570Sthompsa temp = len; 1371197570Sthompsa 1372197570Sthompsa /* copy out data */ 1373197570Sthompsa 1374197570Sthompsa usbd_copy_out(pc, offset, ucom_cons_rx_buf + ucom_cons_rx_high, temp); 1375197570Sthompsa 1376197570Sthompsa /* update counters */ 1377197570Sthompsa 1378197570Sthompsa ucom_cons_rx_high += temp; 1379197570Sthompsa ucom_cons_rx_high %= UCOM_CONS_BUFSIZE; 1380197570Sthompsa 1381197570Sthompsa return; 1382197570Sthompsa } 1383197570Sthompsa 1384192820Sthompsa if (tty_gone(tp)) 1385184610Salfred return; /* multiport device polling */ 1386192820Sthompsa 1387184610Salfred if (len == 0) 1388184610Salfred return; /* no data */ 1389184610Salfred 1390184610Salfred /* set a flag to prevent recursation ? */ 1391184610Salfred 1392184610Salfred while (len > 0) { 1393184610Salfred 1394194228Sthompsa usbd_get_page(pc, offset, &res); 1395184610Salfred 1396184610Salfred if (res.length > len) { 1397184610Salfred res.length = len; 1398184610Salfred } 1399184610Salfred len -= res.length; 1400184610Salfred offset += res.length; 1401184610Salfred 1402184610Salfred /* pass characters to tty layer */ 1403184610Salfred 1404184610Salfred buf = res.buffer; 1405184610Salfred cnt = res.length; 1406184610Salfred 1407184610Salfred /* first check if we can pass the buffer directly */ 1408184610Salfred 1409184610Salfred if (ttydisc_can_bypass(tp)) { 1410242619Shselasky 1411242619Shselasky /* clear any jitter buffer */ 1412242619Shselasky sc->sc_jitterbuf_in = 0; 1413242619Shselasky sc->sc_jitterbuf_out = 0; 1414242619Shselasky 1415184610Salfred if (ttydisc_rint_bypass(tp, buf, cnt) != cnt) { 1416184610Salfred DPRINTF("tp=%p, data lost\n", tp); 1417184610Salfred } 1418184610Salfred continue; 1419184610Salfred } 1420184610Salfred /* need to loop */ 1421184610Salfred 1422184610Salfred for (cnt = 0; cnt != res.length; cnt++) { 1423242619Shselasky if (sc->sc_jitterbuf_in != sc->sc_jitterbuf_out || 1424242619Shselasky ttydisc_rint(tp, buf[cnt], 0) == -1) { 1425242619Shselasky uint16_t end; 1426242619Shselasky uint16_t pos; 1427184610Salfred 1428242619Shselasky pos = sc->sc_jitterbuf_in; 1429242619Shselasky end = sc->sc_jitterbuf_out + 1430242619Shselasky UCOM_JITTERBUF_SIZE - 1; 1431242619Shselasky if (end >= UCOM_JITTERBUF_SIZE) 1432242619Shselasky end -= UCOM_JITTERBUF_SIZE; 1433242619Shselasky 1434242619Shselasky for (; cnt != res.length; cnt++) { 1435242619Shselasky if (pos == end) 1436242619Shselasky break; 1437242619Shselasky sc->sc_jitterbuf[pos] = buf[cnt]; 1438242619Shselasky pos++; 1439242619Shselasky if (pos >= UCOM_JITTERBUF_SIZE) 1440242619Shselasky pos -= UCOM_JITTERBUF_SIZE; 1441242619Shselasky } 1442242619Shselasky 1443242619Shselasky sc->sc_jitterbuf_in = pos; 1444242619Shselasky 1445242619Shselasky /* set RTS in async fashion */ 1446242619Shselasky if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW) 1447242619Shselasky ucom_rts(sc, 1); 1448242619Shselasky 1449184610Salfred DPRINTF("tp=%p, lost %d " 1450184610Salfred "chars\n", tp, res.length - cnt); 1451184610Salfred break; 1452184610Salfred } 1453184610Salfred } 1454184610Salfred } 1455184610Salfred ttydisc_rint_done(tp); 1456184610Salfred} 1457184610Salfred 1458184610Salfredstatic void 1459194228Sthompsaucom_free(void *xsc) 1460184610Salfred{ 1461192984Sthompsa struct ucom_softc *sc = xsc; 1462184610Salfred 1463239179Shselasky if (sc->sc_callback->ucom_free != NULL) 1464239179Shselasky sc->sc_callback->ucom_free(sc); 1465239179Shselasky else 1466239179Shselasky ucom_unref(sc->sc_super); 1467239179Shselasky 1468239179Shselasky mtx_lock(&ucom_mtx); 1469239179Shselasky ucom_close_refs--; 1470239179Shselasky mtx_unlock(&ucom_mtx); 1471184610Salfred} 1472197570Sthompsa 1473197570Sthompsastatic cn_probe_t ucom_cnprobe; 1474197570Sthompsastatic cn_init_t ucom_cninit; 1475197570Sthompsastatic cn_term_t ucom_cnterm; 1476197570Sthompsastatic cn_getc_t ucom_cngetc; 1477197570Sthompsastatic cn_putc_t ucom_cnputc; 1478228631Savgstatic cn_grab_t ucom_cngrab; 1479228631Savgstatic cn_ungrab_t ucom_cnungrab; 1480197570Sthompsa 1481197570SthompsaCONSOLE_DRIVER(ucom); 1482197570Sthompsa 1483197570Sthompsastatic void 1484197570Sthompsaucom_cnprobe(struct consdev *cp) 1485197570Sthompsa{ 1486198774Sthompsa if (ucom_cons_unit != -1) 1487198774Sthompsa cp->cn_pri = CN_NORMAL; 1488198774Sthompsa else 1489198774Sthompsa cp->cn_pri = CN_DEAD; 1490198774Sthompsa 1491198774Sthompsa strlcpy(cp->cn_name, "ucom", sizeof(cp->cn_name)); 1492197570Sthompsa} 1493197570Sthompsa 1494197570Sthompsastatic void 1495197570Sthompsaucom_cninit(struct consdev *cp) 1496197570Sthompsa{ 1497197570Sthompsa} 1498197570Sthompsa 1499197570Sthompsastatic void 1500197570Sthompsaucom_cnterm(struct consdev *cp) 1501197570Sthompsa{ 1502197570Sthompsa} 1503197570Sthompsa 1504228631Savgstatic void 1505228631Savgucom_cngrab(struct consdev *cp) 1506228631Savg{ 1507228631Savg} 1508228631Savg 1509228631Savgstatic void 1510228631Savgucom_cnungrab(struct consdev *cp) 1511228631Savg{ 1512228631Savg} 1513228631Savg 1514197570Sthompsastatic int 1515197570Sthompsaucom_cngetc(struct consdev *cd) 1516197570Sthompsa{ 1517197570Sthompsa struct ucom_softc *sc = ucom_cons_softc; 1518197570Sthompsa int c; 1519197570Sthompsa 1520197570Sthompsa if (sc == NULL) 1521197570Sthompsa return (-1); 1522197570Sthompsa 1523239179Shselasky UCOM_MTX_LOCK(sc); 1524197570Sthompsa 1525197570Sthompsa if (ucom_cons_rx_low != ucom_cons_rx_high) { 1526197570Sthompsa c = ucom_cons_rx_buf[ucom_cons_rx_low]; 1527197570Sthompsa ucom_cons_rx_low ++; 1528197570Sthompsa ucom_cons_rx_low %= UCOM_CONS_BUFSIZE; 1529197570Sthompsa } else { 1530197570Sthompsa c = -1; 1531197570Sthompsa } 1532197570Sthompsa 1533197570Sthompsa /* start USB transfers */ 1534197570Sthompsa ucom_outwakeup(sc->sc_tty); 1535197570Sthompsa 1536239179Shselasky UCOM_MTX_UNLOCK(sc); 1537197570Sthompsa 1538197570Sthompsa /* poll if necessary */ 1539197570Sthompsa if (kdb_active && sc->sc_callback->ucom_poll) 1540197570Sthompsa (sc->sc_callback->ucom_poll) (sc); 1541197570Sthompsa 1542197570Sthompsa return (c); 1543197570Sthompsa} 1544197570Sthompsa 1545197570Sthompsastatic void 1546197570Sthompsaucom_cnputc(struct consdev *cd, int c) 1547197570Sthompsa{ 1548197570Sthompsa struct ucom_softc *sc = ucom_cons_softc; 1549197570Sthompsa unsigned int temp; 1550197570Sthompsa 1551197570Sthompsa if (sc == NULL) 1552197570Sthompsa return; 1553197570Sthompsa 1554197570Sthompsa repeat: 1555197570Sthompsa 1556239179Shselasky UCOM_MTX_LOCK(sc); 1557197570Sthompsa 1558197570Sthompsa /* compute maximum TX length */ 1559197570Sthompsa 1560197570Sthompsa temp = (UCOM_CONS_BUFSIZE - 1) - ucom_cons_tx_high + ucom_cons_tx_low; 1561197570Sthompsa temp %= UCOM_CONS_BUFSIZE; 1562197570Sthompsa 1563197570Sthompsa if (temp) { 1564197570Sthompsa ucom_cons_tx_buf[ucom_cons_tx_high] = c; 1565197570Sthompsa ucom_cons_tx_high ++; 1566197570Sthompsa ucom_cons_tx_high %= UCOM_CONS_BUFSIZE; 1567197570Sthompsa } 1568197570Sthompsa 1569197570Sthompsa /* start USB transfers */ 1570197570Sthompsa ucom_outwakeup(sc->sc_tty); 1571197570Sthompsa 1572239179Shselasky UCOM_MTX_UNLOCK(sc); 1573197570Sthompsa 1574197570Sthompsa /* poll if necessary */ 1575197570Sthompsa if (kdb_active && sc->sc_callback->ucom_poll) { 1576197570Sthompsa (sc->sc_callback->ucom_poll) (sc); 1577197570Sthompsa /* simple flow control */ 1578197570Sthompsa if (temp == 0) 1579197570Sthompsa goto repeat; 1580197570Sthompsa } 1581197570Sthompsa} 1582197570Sthompsa 1583239179Shselasky/*------------------------------------------------------------------------* 1584239179Shselasky * ucom_ref 1585239179Shselasky * 1586239179Shselasky * This function will increment the super UCOM reference count. 1587239179Shselasky *------------------------------------------------------------------------*/ 1588239179Shselaskyvoid 1589239179Shselaskyucom_ref(struct ucom_super_softc *ssc) 1590239179Shselasky{ 1591239179Shselasky mtx_lock(&ucom_mtx); 1592239179Shselasky ssc->sc_refs++; 1593239179Shselasky mtx_unlock(&ucom_mtx); 1594239179Shselasky} 1595239179Shselasky 1596239179Shselasky/*------------------------------------------------------------------------* 1597239299Shselasky * ucom_free_unit 1598239299Shselasky * 1599239299Shselasky * This function will free the super UCOM's allocated unit 1600239299Shselasky * number. This function can be called on a zero-initialized 1601239299Shselasky * structure. This function can be called multiple times. 1602239299Shselasky *------------------------------------------------------------------------*/ 1603239299Shselaskystatic void 1604239299Shselaskyucom_free_unit(struct ucom_super_softc *ssc) 1605239299Shselasky{ 1606239299Shselasky if (!(ssc->sc_flag & UCOM_FLAG_FREE_UNIT)) 1607239299Shselasky return; 1608239299Shselasky 1609239299Shselasky ucom_unit_free(ssc->sc_unit); 1610239299Shselasky 1611239299Shselasky ssc->sc_flag &= ~UCOM_FLAG_FREE_UNIT; 1612239299Shselasky} 1613239299Shselasky 1614239299Shselasky/*------------------------------------------------------------------------* 1615239179Shselasky * ucom_unref 1616239179Shselasky * 1617239179Shselasky * This function will decrement the super UCOM reference count. 1618239179Shselasky * 1619239179Shselasky * Return values: 1620239179Shselasky * 0: UCOM structures are still referenced. 1621239179Shselasky * Else: UCOM structures are no longer referenced. 1622239179Shselasky *------------------------------------------------------------------------*/ 1623239179Shselaskyint 1624239179Shselaskyucom_unref(struct ucom_super_softc *ssc) 1625239179Shselasky{ 1626239179Shselasky int retval; 1627239179Shselasky 1628239179Shselasky mtx_lock(&ucom_mtx); 1629239179Shselasky retval = (ssc->sc_refs < 2); 1630239179Shselasky ssc->sc_refs--; 1631239179Shselasky mtx_unlock(&ucom_mtx); 1632239179Shselasky 1633239299Shselasky if (retval) 1634239299Shselasky ucom_free_unit(ssc); 1635239299Shselasky 1636239179Shselasky return (retval); 1637239179Shselasky} 1638239179Shselasky 1639197570Sthompsa#if defined(GDB) 1640197570Sthompsa 1641197570Sthompsa#include <gdb/gdb.h> 1642197570Sthompsa 1643197570Sthompsastatic gdb_probe_f ucom_gdbprobe; 1644197570Sthompsastatic gdb_init_f ucom_gdbinit; 1645197570Sthompsastatic gdb_term_f ucom_gdbterm; 1646197570Sthompsastatic gdb_getc_f ucom_gdbgetc; 1647197570Sthompsastatic gdb_putc_f ucom_gdbputc; 1648197570Sthompsa 1649197570SthompsaGDB_DBGPORT(sio, ucom_gdbprobe, ucom_gdbinit, ucom_gdbterm, ucom_gdbgetc, ucom_gdbputc); 1650197570Sthompsa 1651197570Sthompsastatic int 1652197570Sthompsaucom_gdbprobe(void) 1653197570Sthompsa{ 1654197570Sthompsa return ((ucom_cons_softc != NULL) ? 0 : -1); 1655197570Sthompsa} 1656197570Sthompsa 1657197570Sthompsastatic void 1658197570Sthompsaucom_gdbinit(void) 1659197570Sthompsa{ 1660197570Sthompsa} 1661197570Sthompsa 1662197570Sthompsastatic void 1663197570Sthompsaucom_gdbterm(void) 1664197570Sthompsa{ 1665197570Sthompsa} 1666197570Sthompsa 1667197570Sthompsastatic void 1668197570Sthompsaucom_gdbputc(int c) 1669197570Sthompsa{ 1670197570Sthompsa ucom_cnputc(NULL, c); 1671197570Sthompsa} 1672197570Sthompsa 1673197570Sthompsastatic int 1674197570Sthompsaucom_gdbgetc(void) 1675197570Sthompsa{ 1676197570Sthompsa return (ucom_cngetc(NULL)); 1677197570Sthompsa} 1678197570Sthompsa 1679197570Sthompsa#endif 1680