39f3ec0342
the device indicates that it wasn't able to write all the data in the buffer out. Ed Schouten doesn't like the idea of a panic here. I think for production code, we need something better. For right now, while we're trying to assess the impact of this issue, a panic is OK. So complain to me, not him if this is hit.
824 lines
20 KiB
C
824 lines
20 KiB
C
/* $NetBSD: ucom.c,v 1.40 2001/11/13 06:24:54 lukem Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001-2003, 2005, 2008
|
|
* Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Lennart Augustsson (lennart@augustsson.net) at
|
|
* Carlstedt Research & Technology.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/ioccom.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/serial.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/clist.h>
|
|
#include <sys/file.h>
|
|
#include <sys/selinfo.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <dev/usb/usb.h>
|
|
#include <dev/usb/usbcdc.h>
|
|
|
|
#include <dev/usb/usbdi.h>
|
|
#include <dev/usb/usbdi_util.h>
|
|
#include "usbdevs.h"
|
|
#include <dev/usb/usb_quirks.h>
|
|
|
|
#include <dev/usb/ucomvar.h>
|
|
|
|
#ifdef USB_DEBUG
|
|
static int ucomdebug = 0;
|
|
SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom");
|
|
SYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW,
|
|
&ucomdebug, 0, "ucom debug level");
|
|
#define DPRINTF(x) do { \
|
|
if (ucomdebug) \
|
|
printf x; \
|
|
} while (0)
|
|
|
|
#define DPRINTFN(n, x) do { \
|
|
if (ucomdebug > (n)) \
|
|
printf x; \
|
|
} while (0)
|
|
#else
|
|
#define DPRINTF(x)
|
|
#define DPRINTFN(n, x)
|
|
#endif
|
|
|
|
static int ucom_modevent(module_t, int, void *);
|
|
static void ucom_cleanup(struct ucom_softc *);
|
|
static void ucom_shutdown(struct ucom_softc *);
|
|
static void ucom_dtr(struct ucom_softc *, int);
|
|
static void ucom_rts(struct ucom_softc *, int);
|
|
static void ucombreak(struct ucom_softc *, int);
|
|
static usbd_status ucomstartread(struct ucom_softc *);
|
|
static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
|
|
static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
|
|
static void ucomstopread(struct ucom_softc *);
|
|
|
|
static tsw_open_t ucomtty_open;
|
|
static tsw_close_t ucomtty_close;
|
|
static tsw_outwakeup_t ucomtty_outwakeup;
|
|
static tsw_ioctl_t ucomtty_ioctl;
|
|
static tsw_param_t ucomtty_param;
|
|
static tsw_modem_t ucomtty_modem;
|
|
static tsw_free_t ucomtty_free;
|
|
|
|
static struct ttydevsw ucomtty_class = {
|
|
.tsw_flags = TF_INITLOCK|TF_CALLOUT,
|
|
.tsw_open = ucomtty_open,
|
|
.tsw_close = ucomtty_close,
|
|
.tsw_outwakeup = ucomtty_outwakeup,
|
|
.tsw_ioctl = ucomtty_ioctl,
|
|
.tsw_param = ucomtty_param,
|
|
.tsw_modem = ucomtty_modem,
|
|
.tsw_free = ucomtty_free,
|
|
};
|
|
|
|
devclass_t ucom_devclass;
|
|
|
|
static moduledata_t ucom_mod = {
|
|
"ucom",
|
|
ucom_modevent,
|
|
NULL
|
|
};
|
|
|
|
DECLARE_MODULE(ucom, ucom_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
MODULE_DEPEND(ucom, usb, 1, 1, 1);
|
|
MODULE_VERSION(ucom, UCOM_MODVER);
|
|
|
|
static int
|
|
ucom_modevent(module_t mod, int type, void *data)
|
|
{
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
break;
|
|
case MOD_UNLOAD:
|
|
break;
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ucom_attach_tty(struct ucom_softc *sc, char* fmt, int unit)
|
|
{
|
|
struct tty *tp;
|
|
|
|
sc->sc_tty = tp = tty_alloc(&ucomtty_class, sc, &Giant);
|
|
tty_makedev(tp, NULL, fmt, unit);
|
|
}
|
|
|
|
int
|
|
ucom_attach(struct ucom_softc *sc)
|
|
{
|
|
|
|
ucom_attach_tty(sc, "U%d", device_get_unit(sc->sc_dev));
|
|
|
|
DPRINTF(("ucom_attach: ttycreate: tp = %p, %s\n",
|
|
sc->sc_tty, sc->sc_tty->t_dev->si_name));
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
ucom_detach(struct ucom_softc *sc)
|
|
{
|
|
DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty));
|
|
|
|
tty_lock(sc->sc_tty);
|
|
sc->sc_dying = 1;
|
|
|
|
if (sc->sc_bulkin_pipe != NULL)
|
|
usbd_abort_pipe(sc->sc_bulkin_pipe);
|
|
if (sc->sc_bulkout_pipe != NULL)
|
|
usbd_abort_pipe(sc->sc_bulkout_pipe);
|
|
|
|
tty_rel_gone(sc->sc_tty);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ucom_shutdown(struct ucom_softc *sc)
|
|
{
|
|
struct tty *tp = sc->sc_tty;
|
|
|
|
DPRINTF(("ucom_shutdown\n"));
|
|
/*
|
|
* Hang up if necessary. Wait a bit, so the other side has time to
|
|
* notice even if we immediately open the port again.
|
|
*/
|
|
if (tp->t_termios.c_cflag & HUPCL) {
|
|
(void)ucomtty_modem(tp, 0, SER_DTR);
|
|
#if 0
|
|
(void)tsleep(sc, TTIPRI, "ucomsd", hz);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static int
|
|
ucomtty_open(struct tty *tp)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
usbd_status err;
|
|
int error;
|
|
|
|
if (sc->sc_dying)
|
|
return (ENXIO);
|
|
|
|
DPRINTF(("%s: ucomtty_open: tp = %p\n", device_get_nameunit(sc->sc_dev), tp));
|
|
|
|
sc->sc_poll = 0;
|
|
sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
|
|
|
|
(void)ucomtty_modem(tp, SER_DTR | SER_RTS, 0);
|
|
|
|
/* Device specific open */
|
|
if (sc->sc_callback->ucom_open != NULL) {
|
|
error = sc->sc_callback->ucom_open(sc->sc_parent,
|
|
sc->sc_portno);
|
|
if (error) {
|
|
ucom_cleanup(sc);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
DPRINTF(("ucomtty_open: open pipes in = %d out = %d\n",
|
|
sc->sc_bulkin_no, sc->sc_bulkout_no));
|
|
|
|
/* Open the bulk pipes */
|
|
/* Bulk-in pipe */
|
|
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
|
|
&sc->sc_bulkin_pipe);
|
|
if (err) {
|
|
printf("%s: open bulk in error (addr %d): %s\n",
|
|
device_get_nameunit(sc->sc_dev), sc->sc_bulkin_no,
|
|
usbd_errstr(err));
|
|
error = EIO;
|
|
goto fail;
|
|
}
|
|
/* Bulk-out pipe */
|
|
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
|
|
USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
|
|
if (err) {
|
|
printf("%s: open bulk out error (addr %d): %s\n",
|
|
device_get_nameunit(sc->sc_dev), sc->sc_bulkout_no,
|
|
usbd_errstr(err));
|
|
error = EIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Allocate a request and an input buffer and start reading. */
|
|
sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
|
|
if (sc->sc_ixfer == NULL) {
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
|
|
sc->sc_ibufsizepad);
|
|
if (sc->sc_ibuf == NULL) {
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
|
|
if (sc->sc_oxfer == NULL) {
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
|
|
sc->sc_obufsize +
|
|
sc->sc_opkthdrlen);
|
|
if (sc->sc_obuf == NULL) {
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
ucomstartread(sc);
|
|
|
|
sc->sc_poll = 1;
|
|
|
|
return (0);
|
|
|
|
fail:
|
|
ucom_cleanup(sc);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
ucomtty_close(struct tty *tp)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
|
|
DPRINTF(("%s: ucomtty_close \n", device_get_nameunit(sc->sc_dev)));
|
|
|
|
ucom_cleanup(sc);
|
|
|
|
if (sc->sc_callback->ucom_close != NULL)
|
|
sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
|
|
}
|
|
|
|
static int
|
|
ucomtty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *p)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
int error;
|
|
|
|
if (sc->sc_dying)
|
|
return (EIO);
|
|
|
|
DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd));
|
|
|
|
switch (cmd) {
|
|
case TIOCSBRK:
|
|
ucombreak(sc, 1);
|
|
return (0);
|
|
case TIOCCBRK:
|
|
ucombreak(sc, 0);
|
|
return (0);
|
|
}
|
|
|
|
error = ENOIOCTL;
|
|
if (sc->sc_callback->ucom_ioctl != NULL)
|
|
error = sc->sc_callback->ucom_ioctl(sc->sc_parent,
|
|
sc->sc_portno,
|
|
cmd, data, p);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ucomtty_modem(struct tty *tp, int sigon, int sigoff)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
int mcr;
|
|
int msr;
|
|
int onoff;
|
|
|
|
if (sigon == 0 && sigoff == 0) {
|
|
mcr = sc->sc_mcr;
|
|
if (ISSET(mcr, SER_DTR))
|
|
sigon |= SER_DTR;
|
|
if (ISSET(mcr, SER_RTS))
|
|
sigon |= SER_RTS;
|
|
|
|
msr = sc->sc_msr;
|
|
if (ISSET(msr, SER_CTS))
|
|
sigon |= SER_CTS;
|
|
if (ISSET(msr, SER_DCD))
|
|
sigon |= SER_DCD;
|
|
if (ISSET(msr, SER_DSR))
|
|
sigon |= SER_DSR;
|
|
if (ISSET(msr, SER_RI))
|
|
sigon |= SER_RI;
|
|
return (sigon);
|
|
}
|
|
|
|
mcr = sc->sc_mcr;
|
|
if (ISSET(sigon, SER_DTR))
|
|
mcr |= SER_DTR;
|
|
if (ISSET(sigoff, SER_DTR))
|
|
mcr &= ~SER_DTR;
|
|
if (ISSET(sigon, SER_RTS))
|
|
mcr |= SER_RTS;
|
|
if (ISSET(sigoff, SER_RTS))
|
|
mcr &= ~SER_RTS;
|
|
sc->sc_mcr = mcr;
|
|
|
|
onoff = ISSET(sc->sc_mcr, SER_DTR) ? 1 : 0;
|
|
ucom_dtr(sc, onoff);
|
|
|
|
onoff = ISSET(sc->sc_mcr, SER_RTS) ? 1 : 0;
|
|
ucom_rts(sc, onoff);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ucombreak(struct ucom_softc *sc, int onoff)
|
|
{
|
|
DPRINTF(("ucombreak: onoff = %d\n", onoff));
|
|
|
|
if (sc->sc_callback->ucom_set == NULL)
|
|
return;
|
|
sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
|
|
UCOM_SET_BREAK, onoff);
|
|
}
|
|
|
|
static void
|
|
ucom_dtr(struct ucom_softc *sc, int onoff)
|
|
{
|
|
DPRINTF(("ucom_dtr: onoff = %d\n", onoff));
|
|
|
|
if (sc->sc_callback->ucom_set == NULL)
|
|
return;
|
|
sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
|
|
UCOM_SET_DTR, onoff);
|
|
}
|
|
|
|
static void
|
|
ucom_rts(struct ucom_softc *sc, int onoff)
|
|
{
|
|
DPRINTF(("ucom_rts: onoff = %d\n", onoff));
|
|
|
|
if (sc->sc_callback->ucom_set == NULL)
|
|
return;
|
|
sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
|
|
UCOM_SET_RTS, onoff);
|
|
}
|
|
|
|
void
|
|
ucom_status_change(struct ucom_softc *sc)
|
|
{
|
|
struct tty *tp = sc->sc_tty;
|
|
u_char old_msr;
|
|
int onoff;
|
|
|
|
if (sc->sc_callback->ucom_get_status == NULL) {
|
|
sc->sc_lsr = 0;
|
|
sc->sc_msr = 0;
|
|
return;
|
|
}
|
|
|
|
old_msr = sc->sc_msr;
|
|
sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno,
|
|
&sc->sc_lsr, &sc->sc_msr);
|
|
if (ISSET((sc->sc_msr ^ old_msr), SER_DCD)) {
|
|
if (sc->sc_poll == 0)
|
|
return;
|
|
onoff = ISSET(sc->sc_msr, SER_DCD) ? 1 : 0;
|
|
DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff));
|
|
ttydisc_modem(tp, onoff);
|
|
}
|
|
}
|
|
|
|
static int
|
|
ucomtty_param(struct tty *tp, struct termios *t)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
int error;
|
|
usbd_status uerr;
|
|
|
|
if (sc->sc_dying)
|
|
return (EIO);
|
|
|
|
DPRINTF(("ucomtty_param: sc = %p\n", sc));
|
|
|
|
/* Check requested parameters. */
|
|
if (t->c_ospeed < 0) {
|
|
DPRINTF(("ucomtty_param: negative ospeed\n"));
|
|
return (EINVAL);
|
|
}
|
|
if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
|
|
DPRINTF(("ucomtty_param: mismatch ispeed and ospeed\n"));
|
|
return (EINVAL);
|
|
}
|
|
t->c_ispeed = t->c_ospeed;
|
|
|
|
if (sc->sc_callback->ucom_param == NULL)
|
|
return (0);
|
|
|
|
ucomstopread(sc);
|
|
|
|
error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
|
|
if (error) {
|
|
DPRINTF(("ucomtty_param: callback: error = %d\n", error));
|
|
return (error);
|
|
}
|
|
|
|
#if 0
|
|
ttsetwater(tp);
|
|
#endif
|
|
|
|
if (t->c_cflag & CRTS_IFLOW) {
|
|
sc->sc_state |= UCS_RTS_IFLOW;
|
|
} else if (sc->sc_state & UCS_RTS_IFLOW) {
|
|
sc->sc_state &= ~UCS_RTS_IFLOW;
|
|
(void)ucomtty_modem(tp, SER_RTS, 0);
|
|
}
|
|
|
|
#if 0
|
|
ttyldoptim(tp);
|
|
#endif
|
|
|
|
uerr = ucomstartread(sc);
|
|
if (uerr != USBD_NORMAL_COMPLETION)
|
|
return (EIO);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ucomtty_free(void *sc)
|
|
{
|
|
/*
|
|
* Our softc gets deallocated earlier on.
|
|
* XXX: we should make sure the TTY device name doesn't get
|
|
* recycled before we end up here!
|
|
*/
|
|
}
|
|
|
|
static void
|
|
ucomtty_outwakeup(struct tty *tp)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
usbd_status err;
|
|
size_t cnt;
|
|
|
|
DPRINTF(("ucomtty_outwakeup: sc = %p\n", sc));
|
|
|
|
if (sc->sc_dying)
|
|
return;
|
|
|
|
/*
|
|
* If there's no sc_oxfer, then ucomclose has removed it. The buffer
|
|
* has just been flushed in the ttyflush() in ttyclose(). ttyflush()
|
|
* then calls tt_stop(). ucomstop calls ucomstart, so the right thing
|
|
* to do here is just abort if sc_oxfer is NULL, as everything else
|
|
* is cleaned up elsewhere.
|
|
*/
|
|
if (sc->sc_oxfer == NULL)
|
|
return;
|
|
|
|
/* XXX: hardware flow control. We should use inwakeup here. */
|
|
#if 0
|
|
if (tp->t_state & TS_TBLOCK) {
|
|
if (ISSET(sc->sc_mcr, SER_RTS) &&
|
|
ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
|
|
DPRINTF(("ucomtty_outwakeup: clear RTS\n"));
|
|
(void)ucomtty_modem(tp, 0, SER_RTS);
|
|
}
|
|
} else {
|
|
if (!ISSET(sc->sc_mcr, SER_RTS) &&
|
|
tp->t_rawq.c_cc <= tp->t_ilowat &&
|
|
ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
|
|
DPRINTF(("ucomtty_outwakeup: set RTS\n"));
|
|
(void)ucomtty_modem(tp, SER_RTS, 0);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (sc->sc_state & UCS_TXBUSY)
|
|
return;
|
|
|
|
sc->sc_state |= UCS_TXBUSY;
|
|
if (sc->sc_callback->ucom_write != NULL)
|
|
cnt = sc->sc_callback->ucom_write(sc->sc_parent,
|
|
sc->sc_portno, tp, sc->sc_obuf, sc->sc_obufsize);
|
|
else
|
|
cnt = ttydisc_getc(tp, sc->sc_obuf, sc->sc_obufsize);
|
|
|
|
if (cnt == 0) {
|
|
DPRINTF(("ucomtty_outwakeup: cnt == 0\n"));
|
|
sc->sc_state &= ~UCS_TXBUSY;
|
|
return;
|
|
}
|
|
sc->sc_obufactive = cnt;
|
|
|
|
DPRINTF(("ucomtty_outwakeup: %zu chars\n", cnt));
|
|
usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
|
|
(usbd_private_handle)sc, sc->sc_obuf, cnt,
|
|
USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
|
|
/* What can we do on error? */
|
|
err = usbd_transfer(sc->sc_oxfer);
|
|
if (err != USBD_IN_PROGRESS) {
|
|
printf("ucomtty_outwakeup: err=%s\n", usbd_errstr(err));
|
|
sc->sc_state &= ~UCS_TXBUSY;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
ucomstop(struct tty *tp, int flag)
|
|
{
|
|
struct ucom_softc *sc = tty_softc(tp);
|
|
int s;
|
|
|
|
DPRINTF(("ucomstop: %d\n", flag));
|
|
|
|
if ((flag & FREAD) && (sc->sc_state & UCS_RXSTOP) == 0) {
|
|
DPRINTF(("ucomstop: read\n"));
|
|
ucomstopread(sc);
|
|
ucomstartread(sc);
|
|
}
|
|
|
|
if (flag & FWRITE) {
|
|
DPRINTF(("ucomstop: write\n"));
|
|
if (ISSET(tp->t_state, TS_BUSY)) {
|
|
/* XXX do what? */
|
|
if (!ISSET(tp->t_state, TS_TTSTOP))
|
|
SET(tp->t_state, TS_FLUSH);
|
|
}
|
|
}
|
|
|
|
ucomtty_outwakeup(tp);
|
|
|
|
DPRINTF(("ucomstop: done\n"));
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
|
|
{
|
|
struct ucom_softc *sc = (struct ucom_softc *)p;
|
|
struct tty *tp = sc->sc_tty;
|
|
u_int32_t cc;
|
|
|
|
DPRINTF(("ucomwritecb: status = %d\n", status));
|
|
|
|
if (status == USBD_CANCELLED || sc->sc_dying)
|
|
return;
|
|
|
|
if (status != USBD_NORMAL_COMPLETION) {
|
|
printf("%s: ucomwritecb: %s\n",
|
|
device_get_nameunit(sc->sc_dev), usbd_errstr(status));
|
|
if (status == USBD_STALLED)
|
|
usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
|
|
/* XXX we should restart after some delay. */
|
|
return;
|
|
}
|
|
|
|
usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
|
|
DPRINTF(("ucomwritecb: cc = %d\n", cc));
|
|
if (cc <= sc->sc_opkthdrlen) {
|
|
printf("%s: sent size too small, cc = %d\n",
|
|
device_get_nameunit(sc->sc_dev), cc);
|
|
return;
|
|
}
|
|
|
|
/* convert from USB bytes to tty bytes */
|
|
cc -= sc->sc_opkthdrlen;
|
|
if (cc != sc->sc_obufactive)
|
|
panic("Partial write of %d of %d bytes, not supported\n",
|
|
cc, sc->sc_obufactive);
|
|
|
|
sc->sc_state &= ~UCS_TXBUSY;
|
|
#if 0
|
|
CLR(tp->t_state, TS_BUSY);
|
|
if (ISSET(tp->t_state, TS_FLUSH))
|
|
CLR(tp->t_state, TS_FLUSH);
|
|
else
|
|
ndflush(&tp->t_outq, cc);
|
|
#endif
|
|
ucomtty_outwakeup(tp);
|
|
}
|
|
|
|
static usbd_status
|
|
ucomstartread(struct ucom_softc *sc)
|
|
{
|
|
usbd_status err;
|
|
|
|
DPRINTF(("ucomstartread: start\n"));
|
|
|
|
if (sc->sc_bulkin_pipe == NULL || (sc->sc_state & UCS_RXSTOP) == 0)
|
|
return (USBD_NORMAL_COMPLETION);
|
|
sc->sc_state &= ~UCS_RXSTOP;
|
|
|
|
usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
|
|
(usbd_private_handle)sc,
|
|
sc->sc_ibuf, sc->sc_ibufsize,
|
|
USBD_SHORT_XFER_OK | USBD_NO_COPY,
|
|
USBD_NO_TIMEOUT, ucomreadcb);
|
|
|
|
err = usbd_transfer(sc->sc_ixfer);
|
|
if (err && err != USBD_IN_PROGRESS) {
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err)));
|
|
return (err);
|
|
}
|
|
|
|
return (USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
static void
|
|
ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
|
|
{
|
|
struct ucom_softc *sc = (struct ucom_softc *)p;
|
|
struct tty *tp = sc->sc_tty;
|
|
usbd_status err;
|
|
u_int32_t cc;
|
|
u_char *cp;
|
|
|
|
DPRINTF(("ucomreadcb: status = %d\n", status));
|
|
|
|
if (status != USBD_NORMAL_COMPLETION) {
|
|
if (!(sc->sc_state & UCS_RXSTOP))
|
|
printf("%s: ucomreadcb: %s\n",
|
|
device_get_nameunit(sc->sc_dev), usbd_errstr(status));
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
if (status == USBD_STALLED)
|
|
usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
|
|
/* XXX we should restart after some delay. */
|
|
return;
|
|
}
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
|
|
usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
|
|
DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
|
|
if (cc == 0)
|
|
goto resubmit;
|
|
|
|
if (sc->sc_callback->ucom_read != NULL)
|
|
sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
|
|
&cp, &cc);
|
|
|
|
if (cc > sc->sc_ibufsize) {
|
|
printf("%s: invalid receive data size, %d chars\n",
|
|
device_get_nameunit(sc->sc_dev), cc);
|
|
goto resubmit;
|
|
}
|
|
if (cc < 1)
|
|
goto resubmit;
|
|
|
|
/* Give characters to tty layer. */
|
|
while (cc > 0) {
|
|
DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
|
|
if (ttydisc_rint(tp, *cp, 0) == -1) {
|
|
/* XXX what should we do? */
|
|
printf("%s: lost %d chars\n",
|
|
device_get_nameunit(sc->sc_dev), cc);
|
|
break;
|
|
}
|
|
cc--;
|
|
cp++;
|
|
}
|
|
ttydisc_rint_done(tp);
|
|
|
|
resubmit:
|
|
err = ucomstartread(sc);
|
|
if (err) {
|
|
printf("%s: read start failed\n", device_get_nameunit(sc->sc_dev));
|
|
/* XXX what should we dow now? */
|
|
}
|
|
|
|
#if 0
|
|
if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, SER_RTS)
|
|
&& !(tp->t_state & TS_TBLOCK))
|
|
ucomtty_modem(tp, SER_RTS, 0);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
ucom_cleanup(struct ucom_softc *sc)
|
|
{
|
|
DPRINTF(("ucom_cleanup: closing pipes\n"));
|
|
|
|
ucom_shutdown(sc);
|
|
if (sc->sc_bulkin_pipe != NULL) {
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
usbd_abort_pipe(sc->sc_bulkin_pipe);
|
|
usbd_close_pipe(sc->sc_bulkin_pipe);
|
|
sc->sc_bulkin_pipe = NULL;
|
|
}
|
|
if (sc->sc_bulkout_pipe != NULL) {
|
|
usbd_abort_pipe(sc->sc_bulkout_pipe);
|
|
usbd_close_pipe(sc->sc_bulkout_pipe);
|
|
sc->sc_bulkout_pipe = NULL;
|
|
}
|
|
if (sc->sc_ixfer != NULL) {
|
|
usbd_free_xfer(sc->sc_ixfer);
|
|
sc->sc_ixfer = NULL;
|
|
}
|
|
if (sc->sc_oxfer != NULL) {
|
|
usbd_free_xfer(sc->sc_oxfer);
|
|
sc->sc_oxfer = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ucomstopread(struct ucom_softc *sc)
|
|
{
|
|
usbd_status err;
|
|
|
|
DPRINTF(("ucomstopread: enter\n"));
|
|
|
|
if (!(sc->sc_state & UCS_RXSTOP)) {
|
|
sc->sc_state |= UCS_RXSTOP;
|
|
if (sc->sc_bulkin_pipe == NULL) {
|
|
DPRINTF(("ucomstopread: bulkin pipe NULL\n"));
|
|
return;
|
|
}
|
|
err = usbd_abort_pipe(sc->sc_bulkin_pipe);
|
|
if (err) {
|
|
DPRINTF(("ucomstopread: err = %s\n",
|
|
usbd_errstr(err)));
|
|
}
|
|
}
|
|
|
|
DPRINTF(("ucomstopread: leave\n"));
|
|
}
|