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freebsd-dev/sys/dev/usb/ubser.c

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/*
* Copyright (c) 2004 Bernd Walter <ticso@freebsd.org>
*
* $URL: https://devel.bwct.de/svn/projects/ubser/ubser.c $
* $Date: 2004-02-29 01:53:10 +0100 (Sun, 29 Feb 2004) $
* $Author: ticso $
* $Rev: 1127 $
*/
/*-
* Copyright (c) 2001-2002, 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.
*/
/*
* Copyright (c) 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).
*
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* BWCT serial adapter driver
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/clist.h>
#include <sys/file.h>
#if __FreeBSD_version >= 500014
#include <sys/selinfo.h>
#else
#include <sys/select.h>
#endif
#include <sys/sysctl.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#include <dev/usb/ubser.h>
#ifdef USB_DEBUG
static int ubserdebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ubser, CTLFLAG_RW, 0, "USB ubser");
SYSCTL_INT(_hw_usb_ubser, OID_AUTO, debug, CTLFLAG_RW,
&ubserdebug, 0, "ubser debug level");
#define DPRINTF(x) do { \
if (ubserdebug) \
logprintf x; \
} while (0)
#define DPRINTFN(n, x) do { \
if (ubserdebug > (n)) \
logprintf x; \
} while (0)
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define ISSET(t, f) ((t) & (f))
#define SET(t, f) (t) |= (f)
#define CLR(t, f) (t) &= ~((unsigned)(f))
struct ubser_softc {
USBBASEDEVICE sc_dev;
usbd_device_handle sc_udev;
usbd_interface_handle sc_iface; /* data interface */
int sc_ifaceno;
int sc_refcnt;
u_char sc_dying;
u_char sc_opening;
int sc_state;
uint8_t sc_numser;
int sc_bulkin_no; /* bulk in endpoint address */
usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */
usbd_xfer_handle sc_ixfer; /* read request */
u_char *sc_ibuf; /* read buffer */
u_int sc_ibufsize; /* read buffer size */
u_int sc_ibufsizepad; /* read buffer size padded */
int sc_bulkout_no; /* bulk out endpoint address */
usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */
usbd_xfer_handle sc_oxfer[8]; /* write request */
u_char *sc_obuf[8]; /* write buffer */
u_int sc_obufsize; /* write buffer size */
u_int sc_opkthdrlen; /* header length of
output packet */
struct cdev *dev[8];
};
Static d_open_t ubser_open;
Static d_close_t ubser_close;
Static d_read_t ubser_read;
Static d_write_t ubser_write;
Static d_ioctl_t ubser_ioctl;
Static int ubserparam(struct tty *, struct termios *);
Static void ubserstart(struct tty *);
Static void ubserstop(struct tty *, int);
Static usbd_status ubserstartread(struct ubser_softc *);
Static void ubserreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static void ubserwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static void ubser_cleanup(struct ubser_softc *sc);
static struct cdevsw ubser_cdevsw = {
#if __FreeBSD_version > 502102
.d_version = D_VERSION,
#endif
.d_open = ubser_open,
.d_close = ubser_close,
.d_read = ubser_read,
.d_write = ubser_write,
.d_ioctl = ubser_ioctl,
#if __FreeBSD_version < 502103
.d_poll = ttypoll,
.d_kqfilter = ttykqfilter,
#endif
.d_name = "ubser",
#if __FreeBSD_version > 502102
.d_flags = D_TTY | D_NEEDGIANT,
#else
.d_flags = D_TTY,
#endif
#if __FreeBSD_version < 500014
.d_bmaj = -1,
#endif
};
USB_DECLARE_DRIVER(ubser);
USB_MATCH(ubser)
{
USB_MATCH_START(ubser, uaa);
usb_string_descriptor_t us;
usb_interface_descriptor_t *id;
usb_device_descriptor_t *dd;
int err, size;
if (uaa->iface == NULL)
return (UMATCH_NONE);
DPRINTFN(20,("ubser: vendor=0x%x, product=0x%x\n",
uaa->vendor, uaa->product));
dd = usbd_get_device_descriptor(uaa->device);
if (dd == NULL) {
printf("ubser: failed to get device descriptor\n");
return (UMATCH_NONE);
}
id = usbd_get_interface_descriptor(uaa->iface);
if (id == NULL) {
printf("ubser: failed to get interface descriptor\n");
return (UMATCH_NONE);
}
err = usbd_get_string_desc(uaa->device, dd->iManufacturer, 0, &us,
&size);
if (err != 0)
return (UMATCH_NONE);
/* check if this is a BWCT vendor specific ubser interface */
if (strcmp((char*)us.bString, "B\0W\0C\0T\0") == 0 &&
id->bInterfaceClass == 0xff && id->bInterfaceSubClass == 0x00)
return (UMATCH_VENDOR_IFACESUBCLASS);
return (UMATCH_NONE);
}
USB_ATTACH(ubser)
{
USB_ATTACH_START(ubser, sc, uaa);
usbd_device_handle udev = uaa->device;
usb_endpoint_descriptor_t *ed;
usb_interface_descriptor_t *id;
usb_device_request_t req;
char *devinfo;
struct tty *tp;
usbd_status err;
int i;
int alen;
uint8_t epcount;
devinfo = malloc(1024, M_USBDEV, M_WAITOK);
usbd_devinfo(udev, 0, devinfo);
USB_ATTACH_SETUP;
DPRINTFN(10,("\nubser_attach: sc=%p\n", sc));
sc->sc_udev = udev = uaa->device;
sc->sc_iface = uaa->iface;
for (i = 0; i < 8; i++) {
sc->dev[i] = NULL;
}
/* get interface index */
id = usbd_get_interface_descriptor(uaa->iface);
if (id == NULL) {
printf("ubser: failed to get interface descriptor\n");
return (UMATCH_NONE);
}
sc->sc_ifaceno = id->bInterfaceNumber;
/* get number of serials */
req.bmRequestType = UT_READ_VENDOR_INTERFACE;
req.bRequest = VENDOR_GET_NUMSER;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifaceno);
USETW(req.wLength, 1);
err = usbd_do_request_flags(udev, &req, &sc->sc_numser,
USBD_SHORT_XFER_OK, &alen, USBD_DEFAULT_TIMEOUT);
if (err) {
printf("%s: cannot get number of serials\n",
USBDEVNAME(sc->sc_dev));
goto bad;
} else if (alen != 1) {
printf("%s: bogus answer on get_numser\n",
USBDEVNAME(sc->sc_dev));
goto bad;
}
if (sc->sc_numser > 8)
sc->sc_numser = 8;
printf("%s: found %i serials\n", USBDEVNAME(sc->sc_dev), sc->sc_numser);
sc->sc_ibufsize = 7;
sc->sc_ibufsizepad = 8;
sc->sc_obufsize = 7;
sc->sc_opkthdrlen = 1;
for (i = 0; i < sc->sc_numser; i++) {
sc->dev[i] = NULL;
}
for (i = 0; i < sc->sc_numser; i++) {
sc->dev[i] = make_dev(&ubser_cdevsw,
USBDEVUNIT(sc->sc_dev) * 8 + i,
UID_UUCP, GID_DIALER, 0660,
"%s.%d", USBDEVNAME(sc->sc_dev), i);
if (sc->dev[i] == NULL) {
printf("%s: make_dev failed\n", USBDEVNAME(sc->sc_dev));
goto bad;
}
sc->dev[i]->si_tty = tp = ttymalloc(NULL);
if (sc->dev[i]->si_tty == NULL) {
printf("%s: ttymalloc failed\n", USBDEVNAME(sc->sc_dev));
goto bad;
}
DPRINTF(("ubser_attach: tty_attach tp = %p\n", tp));
tp->t_oproc = ubserstart;
tp->t_param = ubserparam;
tp->t_stop = ubserstop;
}
/* find our bulk endpoints */
epcount = 0;
usbd_endpoint_count(sc->sc_iface, &epcount);
sc->sc_bulkin_no = -1;
sc->sc_bulkout_no = -1;
for (i = 0; i < epcount; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
if (ed == NULL) {
printf("%s: couldn't get ep %d\n",
USBDEVNAME(sc->sc_dev), i);
USB_ATTACH_ERROR_RETURN;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->sc_bulkin_no = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->sc_bulkout_no = ed->bEndpointAddress;
}
}
if (sc->sc_bulkin_no == -1) {
printf("%s: could not find bulk in endpoint\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
if (sc->sc_bulkout_no == -1) {
printf("%s: could not find bulk out endpoint\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
/* 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",
USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no,
usbd_errstr(err));
goto fail_0;
}
/* 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",
USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no,
usbd_errstr(err));
goto fail_1;
}
/* Allocate a request and an input buffer and start reading. */
sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_ixfer == NULL) {
goto fail_2;
}
sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
sc->sc_ibufsizepad);
if (sc->sc_ibuf == NULL) {
goto fail_3;
}
for (i = 0; i < 8; i++) {
sc->sc_oxfer[i] = NULL;
sc->sc_obuf[i] = NULL;
}
for (i = 0; i < sc->sc_numser; i++) {
sc->sc_oxfer[i] = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_oxfer[i] == NULL) {
goto fail_4;
}
sc->sc_obuf[i] = usbd_alloc_buffer(sc->sc_oxfer[i],
sc->sc_obufsize +
sc->sc_opkthdrlen);
if (sc->sc_obuf[i] == NULL) {
goto fail_4;
}
}
ubserstartread(sc);
free(devinfo, M_USBDEV);
USB_ATTACH_SUCCESS_RETURN;
fail_4:
for (i = 0; i < sc->sc_numser; i++) {
if (sc->sc_oxfer[i] != NULL) {
usbd_free_xfer(sc->sc_oxfer[i]);
sc->sc_oxfer[i] = NULL;
}
}
fail_3:
usbd_free_xfer(sc->sc_ixfer);
sc->sc_ixfer = NULL;
fail_2:
usbd_close_pipe(sc->sc_bulkout_pipe);
sc->sc_bulkout_pipe = NULL;
fail_1:
usbd_close_pipe(sc->sc_bulkin_pipe);
sc->sc_bulkin_pipe = NULL;
fail_0:
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
bad:
ubser_cleanup(sc);
for (i = 0; i < 8; i++) {
if (sc->dev[i] != NULL) {
tp = sc->dev[i]->si_tty;
if (tp != NULL) {
if (tp->t_state & TS_ISOPEN) {
ttyld_close(tp, 0);
tty_close(tp);
}
}
destroy_dev(sc->dev[i]);
}
}
DPRINTF(("ubser_attach: ATTACH ERROR\n"));
free(devinfo, M_USBDEV);
USB_ATTACH_ERROR_RETURN;
}
USB_DETACH(ubser)
{
USB_DETACH_START(ubser, sc);
int i, s;
struct tty *tp;
DPRINTF(("ubser_detach: sc=%p\n", sc));
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);
for (i = 0; i < 8; i++) {
if (sc->dev[i] != NULL) {
tp = sc->dev[i]->si_tty;
if (tp != NULL) {
if (tp->t_state & TS_ISOPEN) {
ttyld_close(tp, 0);
tty_close(tp);
}
}
destroy_dev(sc->dev[i]);
}
}
s = splusb();
if (--sc->sc_refcnt >= 0) {
/* Wait for processes to go away. */
usb_detach_wait(USBDEV(sc->sc_dev));
}
splx(s);
return (0);
}
Static int
ubserparam(struct tty *tp, struct termios *t)
{
struct ubser_softc *sc;
USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc);
if (sc->sc_dying)
return (EIO);
DPRINTF(("ubserparam: sc = %p\n", sc));
/*
* The firmware on our devices can only do 8n1@9600bps
* without handshake.
* We refuse to accept other configurations.
*/
/* enshure 9600bps */
switch (t->c_ospeed) {
case 9600:
break;
default:
return (EINVAL);
}
/* 2 stop bits not possible */
if (ISSET(t->c_cflag, CSTOPB))
return (EINVAL);
/* XXX parity handling not possible with current firmware */
if (ISSET(t->c_cflag, PARENB))
return (EINVAL);
/* we can only do 8 data bits */
switch (ISSET(t->c_cflag, CSIZE)) {
case CS8:
break;
default:
return (EINVAL);
}
/* we can't do any kind of hardware handshaking */
if ((t->c_cflag &
(CRTS_IFLOW | CDTR_IFLOW |CDSR_OFLOW |CCAR_OFLOW)) != 0)
return (EINVAL);
/*
* XXX xon/xoff not supported by the firmware!
* This is handled within FreeBSD only and may overflow buffers
* because of delayed reaction due to device buffering.
*/
ttsetwater(tp);
return (0);
}
Static void
ubserstart(struct tty *tp)
{
struct ubser_softc *sc;
struct cblock *cbp;
usbd_status err;
int s;
u_char *data;
int cnt;
uint8_t serial;
USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc);
serial = dev2unit(tp->t_dev) & 0x07;
DPRINTF(("ubserstart: sc = %p, tp = %p\n", sc, tp));
if (sc->sc_dying)
return;
s = spltty();
if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
ttwwakeup(tp);
DPRINTF(("ubserstart: stopped\n"));
goto out;
}
if (tp->t_outq.c_cc <= tp->t_olowat) {
if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
CLR(tp->t_state, TS_SO_OLOWAT);
wakeup(TSA_OLOWAT(tp));
}
selwakeuppri(&tp->t_wsel, TTIPRI);
if (tp->t_outq.c_cc == 0) {
if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
CLR(tp->t_state, TS_SO_OCOMPLETE);
wakeup(TSA_OCOMPLETE(tp));
}
goto out;
}
}
/* Grab the first contiguous region of buffer space. */
data = tp->t_outq.c_cf;
cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
if (cnt == 0) {
DPRINTF(("ubserstart: cnt == 0\n"));
goto out;
}
SET(tp->t_state, TS_BUSY);
if (cnt + sc->sc_opkthdrlen > sc->sc_obufsize) {
DPRINTF(("ubserstart: big buffer %d chars\n", cnt));
cnt = sc->sc_obufsize;
}
sc->sc_obuf[serial][0] = serial;
memcpy(sc->sc_obuf[serial] + sc->sc_opkthdrlen, data, cnt);
DPRINTF(("ubserstart: %d chars\n", cnt));
usbd_setup_xfer(sc->sc_oxfer[serial], sc->sc_bulkout_pipe,
(usbd_private_handle)tp, sc->sc_obuf[serial],
cnt + sc->sc_opkthdrlen,
USBD_NO_COPY, USBD_NO_TIMEOUT, ubserwritecb);
/* What can we do on error? */
err = usbd_transfer(sc->sc_oxfer[serial]);
if (err != USBD_IN_PROGRESS)
printf("ubserstart: err=%s\n", usbd_errstr(err));
ttwwakeup(tp);
out:
splx(s);
}
Static void
ubserstop(struct tty *tp, int flag)
{
struct ubser_softc *sc;
int s;
USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc);
DPRINTF(("ubserstop: %d\n", flag));
if (flag & FWRITE) {
DPRINTF(("ubserstop: write\n"));
s = spltty();
if (ISSET(tp->t_state, TS_BUSY)) {
/* XXX do what? */
if (!ISSET(tp->t_state, TS_TTSTOP))
SET(tp->t_state, TS_FLUSH);
}
splx(s);
}
DPRINTF(("ubserstop: done\n"));
}
Static void
ubserwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
{
struct tty *tp;
struct ubser_softc *sc;
u_int32_t cc;
int s;
tp = (struct tty *)p;
USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc);
DPRINTF(("ubserwritecb: status = %d\n", status));
if (status == USBD_CANCELLED || sc->sc_dying)
goto error;
if (status != USBD_NORMAL_COMPLETION) {
printf("%s: ubserwritecb: %s\n",
USBDEVNAME(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. */
goto error;
}
usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
DPRINTF(("ubserwritecb: cc = %d\n", cc));
if (cc <= sc->sc_opkthdrlen) {
printf("%s: sent size too small, cc = %d\n",
USBDEVNAME(sc->sc_dev), cc);
goto error;
}
/* convert from USB bytes to tty bytes */
cc -= sc->sc_opkthdrlen;
s = spltty();
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);
ttyld_start(tp);
splx(s);
return;
error:
s = spltty();
CLR(tp->t_state, TS_BUSY);
splx(s);
return;
}
Static usbd_status
ubserstartread(struct ubser_softc *sc)
{
usbd_status err;
DPRINTF(("ubserstartread: start\n"));
if (sc->sc_bulkin_pipe == NULL)
return (USBD_NORMAL_COMPLETION);
usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
(usbd_private_handle)sc,
sc->sc_ibuf, sc->sc_ibufsizepad,
USBD_SHORT_XFER_OK | USBD_NO_COPY,
USBD_NO_TIMEOUT, ubserreadcb);
err = usbd_transfer(sc->sc_ixfer);
if (err != USBD_IN_PROGRESS) {
DPRINTF(("ubserstartread: err = %s\n", usbd_errstr(err)));
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
Static void
ubserreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
{
struct ubser_softc *sc = (struct ubser_softc *)p;
struct tty *tp;
usbd_status err;
u_int32_t cc;
u_char *cp;
int lostcc;
int s;
DPRINTF(("ubserreadcb: status = %d\n", status));
if (status != USBD_NORMAL_COMPLETION) {
printf("%s: ubserreadcb: %s\n",
USBDEVNAME(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, (void **)&cp, &cc, NULL);
DPRINTF(("ubserreadcb: got %d bytes from device\n", cc));
if (cc == 0)
goto resubmit;
if (cc > sc->sc_ibufsizepad) {
printf("%s: invalid receive data size, %d chars\n",
USBDEVNAME(sc->sc_dev), cc);
goto resubmit;
}
/* parse header */
if (cc < 1)
goto resubmit;
DPRINTF(("ubserreadcb: got %d chars for serial %d\n", cc - 1, *cp));
tp = sc->dev[*cp]->si_tty;
cp++;
cc--;
if (cc < 1)
goto resubmit;
if (!(tp->t_state & TS_ISOPEN)) /* drop data for unused serials */
goto resubmit;
s = spltty();
if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
&& (tp->t_iflag & IXOFF)
&& !(tp->t_state & TS_TBLOCK))
ttyblock(tp);
lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
tp->t_rawcc += cc;
ttwakeup(tp);
if (tp->t_state & TS_TTSTOP
&& (tp->t_iflag & IXANY
|| tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
tp->t_state &= ~TS_TTSTOP;
tp->t_lflag &= ~FLUSHO;
ubserstart(tp);
}
if (lostcc > 0)
printf("%s: lost %d chars\n", USBDEVNAME(sc->sc_dev),
lostcc);
} else {
/* Give characters to tty layer. */
while (cc > 0) {
DPRINTFN(7, ("ubserreadcb: char = 0x%02x\n", *cp));
if (ttyld_rint(tp, *cp) == -1) {
/* XXX what should we do? */
printf("%s: lost %d chars\n",
USBDEVNAME(sc->sc_dev), cc);
break;
}
cc--;
cp++;
}
}
splx(s);
resubmit:
err = ubserstartread(sc);
if (err) {
printf("%s: read start failed\n", USBDEVNAME(sc->sc_dev));
/* XXX what should we do now? */
}
}
Static void
ubser_cleanup(struct ubser_softc *sc)
{
int i;
DPRINTF(("ubser_cleanup: closing pipes\n"));
if (sc->sc_bulkin_pipe != NULL) {
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;
}
for (i = 0; i < sc->sc_numser; i++) {
if (sc->sc_oxfer[i] != NULL) {
usbd_free_xfer(sc->sc_oxfer[i]);
sc->sc_oxfer[i] = NULL;
}
}
}
static int
ubser_open(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
{
struct ubser_softc *sc;
struct tty *tp;
int s;
int error;
USB_GET_SC(ubser, dev2unit(dev) / 8, sc);
if (sc->sc_dying)
return (ENXIO);
tp = sc->dev[dev2unit(dev) & 0x07]->si_tty;
DPRINTF(("%s: ubser_open: tp = %p\n", USBDEVNAME(sc->sc_dev), tp));
if (ISSET(tp->t_state, TS_ISOPEN) &&
ISSET(tp->t_state, TS_XCLUDE) &&
suser(p))
return (EBUSY);
/*
* Do the following if this is a first open.
*/
s = spltty();
while (sc->sc_opening)
tsleep(&sc->sc_opening, PRIBIO, "ubser_op", 0);
sc->sc_opening = 1;
if (!ISSET(tp->t_state, TS_ISOPEN)) {
tp->t_dev = dev;
/*
* Initialize the termios status to the defaults. Add in the
* sticky bits from TIOCSFLAGS.
*/
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
ttychars(tp);
ttsetwater(tp);
/*
* Handle initial DCD.
*/
ttyld_modem(tp, 1);
}
sc->sc_refcnt++; /* XXX: wrong refcnt on error later on */
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
error = tty_open(dev, tp);
if (error)
goto bad;
error = ttyld_open(tp, dev);
if (error)
goto bad;
DPRINTF(("%s: ubser_open: success\n", USBDEVNAME(sc->sc_dev)));
return (0);
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
return (error);
bad:
DPRINTF(("%s: ubser_open: failed\n", USBDEVNAME(sc->sc_dev)));
return (error);
}
static int
ubser_close(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
{
struct ubser_softc *sc;
struct tty *tp;
USB_GET_SC(ubser, dev2unit(dev) / 8, sc);
tp = sc->dev[dev2unit(dev) & 0x07]->si_tty;
DPRINTF(("%s: ubserclose\n",
USBDEVNAME(sc->sc_dev)));
if (!ISSET(tp->t_state, TS_ISOPEN))
goto quit;
if (sc->sc_dying)
goto quit;
quit:
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(USBDEV(sc->sc_dev));
return (0);
}
static int
ubser_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
{
usb_device_request_t req;
struct ubser_softc *sc;
struct tty *tp;
int error;
int s;
int alen;
USB_GET_SC(ubser, dev2unit(dev) / 8, sc);
tp = sc->dev[dev2unit(dev) & 0x07]->si_tty;
DPRINTF(("ubser_ioctl: cmd = 0x%08lx\n", cmd));
if (sc->sc_dying)
return (EIO);
error = ttyioctl(dev, cmd, data, flag, p);
if (error != ENOTTY) {
DPRINTF(("ubser_ioctl: l_ioctl: error = %d\n", error));
return (error);
}
error = 0;
s = spltty();
switch (cmd) {
case TIOCSBRK: /* clearing break condition is done in firmware */
DPRINTF(("ubser_ioctl: TIOCSBRK\n"));
req.bmRequestType = UT_READ_VENDOR_INTERFACE;
req.bRequest = VENDOR_SET_BREAK;
USETW(req.wValue, dev2unit(dev) & 0x07);
USETW(req.wIndex, sc->sc_ifaceno);
USETW(req.wLength, 0);
error = usbd_do_request_flags(sc->sc_udev, &req, &sc->sc_numser,
USBD_SHORT_XFER_OK, &alen, USBD_DEFAULT_TIMEOUT);
break;
/* XXX: something else to handle? */
}
splx(s);
return (error);
}
static int
ubser_read(struct cdev *dev, struct uio *uio, int flag)
{
struct ubser_softc *sc;
struct tty *tp;
int error;
USB_GET_SC(ubser, dev2unit(dev) / 8, sc);
tp = sc->dev[dev2unit(dev) & 0x07]->si_tty;
DPRINTF(("ubser_read: tp = %p, flag = 0x%x\n", tp, flag));
if (sc->sc_dying)
return (EIO);
error = ttyld_read(tp, uio, flag);
DPRINTF(("ubser_read: error = %d\n", error));
return (error);
}
static int
ubser_write(struct cdev *dev, struct uio *uio, int flag)
{
struct ubser_softc *sc;
struct tty *tp;
int error;
USB_GET_SC(ubser, dev2unit(dev) / 8, sc);
tp = sc->dev[dev2unit(dev) & 0x07]->si_tty;
DPRINTF(("ubser_write: tp = %p, flag = 0x%x\n", tp, flag));
if (sc->sc_dying)
return (EIO);
error = ttyld_write(tp, uio, flag);
DPRINTF(("ubser_write: error = %d\n", error));
return (error);
}
DRIVER_MODULE(ubser, uhub, ubser_driver, ubser_devclass, usbd_driver_load, 0);
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