diff options
Diffstat (limited to 'sys/legacy/dev/usb/ubser.c')
| -rw-r--r-- | sys/legacy/dev/usb/ubser.c | 882 |
1 files changed, 882 insertions, 0 deletions
diff --git a/sys/legacy/dev/usb/ubser.c b/sys/legacy/dev/usb/ubser.c new file mode 100644 index 0000000..29994b9 --- /dev/null +++ b/sys/legacy/dev/usb/ubser.c @@ -0,0 +1,882 @@ +/*- + * 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/serial.h> +#include <sys/tty.h> +#include <sys/clist.h> +#include <sys/file.h> + +#include <sys/selinfo.h> + +#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) \ + printf x; \ + } while (0) + +#define DPRINTFN(n, x) do { \ + if (ubserdebug > (n)) \ + printf 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_port { + int p_port; + struct ubser_softc *p_sc; + usbd_xfer_handle p_oxfer; /* write request */ + u_char *p_obuf; /* write buffer */ + struct tty *p_tty; +}; + +struct ubser_softc { + device_t 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 */ + u_int sc_obufsize; /* write buffer size */ + u_int sc_opkthdrlen; /* header length of + output packet */ + + struct ubser_port *sc_port; +}; + +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 t_break_t ubserbreak; +static t_open_t ubseropen; +static t_close_t ubserclose; +static t_modem_t ubsermodem; + +static device_probe_t ubser_match; +static device_attach_t ubser_attach; +static device_detach_t ubser_detach; + +static device_method_t ubser_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ubser_match), + DEVMETHOD(device_attach, ubser_attach), + DEVMETHOD(device_detach, ubser_detach), + + { 0, 0 } +}; + +static driver_t ubser_driver = { + "ubser", + ubser_methods, + sizeof(struct ubser_softc) +}; + +static devclass_t ubser_devclass; + +static int +ubser_match(device_t self) +{ + struct usb_attach_arg *uaa = device_get_ivars(self); + 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); +} + +static int +ubser_attach(device_t self) +{ + struct ubser_softc *sc = device_get_softc(self); + struct usb_attach_arg *uaa = device_get_ivars(self); + usbd_device_handle udev = uaa->device; + usb_endpoint_descriptor_t *ed; + usb_interface_descriptor_t *id; + usb_device_request_t req; + struct tty *tp; + usbd_status err; + int i; + int alen; + uint8_t epcount; + struct ubser_port *pp; + + sc->sc_dev = self; + + DPRINTFN(10,("\nubser_attach: sc=%p\n", sc)); + + sc->sc_udev = udev = uaa->device; + sc->sc_iface = uaa->iface; + sc->sc_numser = 0; + sc->sc_port = 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) { + device_printf(self, "failed to get number of serials\n"); + goto bad; + } else if (alen != 1) { + device_printf(self, "bogus answer on get_numser\n"); + goto bad; + } + if (sc->sc_numser > MAX_SER) + sc->sc_numser = MAX_SER; + device_printf(self, "found %i serials\n", sc->sc_numser); + + sc->sc_port = malloc(sizeof(*sc->sc_port) * sc->sc_numser, + M_USBDEV, M_WAITOK); + + /* find our bulk endpoints */ + epcount = 0; + (void)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) { + device_printf(self, "couldn't get ep %d\n", i); + return ENXIO; + } + if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->sc_bulkin_no = ed->bEndpointAddress; + sc->sc_ibufsizepad = UGETW(ed->wMaxPacketSize); + sc->sc_ibufsizepad = UGETW(ed->wMaxPacketSize) - 1; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->sc_bulkout_no = ed->bEndpointAddress; + sc->sc_obufsize = UGETW(ed->wMaxPacketSize) - 1; + sc->sc_opkthdrlen = 1; + } + } + if (sc->sc_bulkin_no == -1 || sc->sc_bulkout_no == -1) { + device_printf(self, "could not find bulk in/out endpoint\n"); + sc->sc_dying = 1; + goto bad; + } + + /* 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) { + device_printf(self, "open bulk in error (addr %d): %s\n", + 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) { + device_printf(self, "open bulk out error (addr %d): %s\n", + sc->sc_bulkout_no, usbd_errstr(err)); + goto fail_1; + } + + /* Allocate a request and an input buffer */ + 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 < sc->sc_numser; i++) { + pp = &sc->sc_port[i]; + pp->p_port = i; + pp->p_sc = sc; + tp = pp->p_tty = ttyalloc(); + tp->t_sc = pp; + DPRINTF(("ubser_attach: tty_attach tp = %p\n", tp)); + tp->t_oproc = ubserstart; + tp->t_param = ubserparam; + tp->t_stop = ubserstop; + tp->t_break = ubserbreak; + tp->t_open = ubseropen; + tp->t_close = ubserclose; + tp->t_modem = ubsermodem; + ttycreate(tp, 0, "y%r%r", device_get_unit(sc->sc_dev), i); + } + + + for (i = 0; i < sc->sc_numser; i++) { + sc->sc_port[i].p_oxfer = NULL; + sc->sc_port[i].p_obuf = NULL; + } + for (i = 0; i < sc->sc_numser; i++) { + sc->sc_port[i].p_oxfer = usbd_alloc_xfer(sc->sc_udev); + if (sc->sc_port[i].p_oxfer == NULL) { + goto fail_4; + } + + sc->sc_port[i].p_obuf = usbd_alloc_buffer(sc->sc_port[i].p_oxfer, + sc->sc_obufsize + + sc->sc_opkthdrlen); + if (sc->sc_port[i].p_obuf == NULL) { + goto fail_4; + } + } + + ubserstartread(sc); + return 0; + +fail_4: + for (i = 0; i < sc->sc_numser; i++) { + if (sc->sc_port[i].p_oxfer != NULL) { + usbd_free_xfer(sc->sc_port[i].p_oxfer); + sc->sc_port[i].p_oxfer = 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); + if (sc->sc_port != NULL) { + for (i = 0; i < sc->sc_numser; i++) { + pp = &sc->sc_port[i]; + if (pp->p_tty != NULL) + ttyfree(pp->p_tty); + } + free(sc->sc_port, M_USBDEV); + sc->sc_port = NULL; + } + + DPRINTF(("ubser_attach: ATTACH ERROR\n")); + return ENXIO; +} + +static int +ubser_detach(device_t self) +{ + struct ubser_softc *sc = device_get_softc(self); + int i; + struct ubser_port *pp; + + DPRINTF(("ubser_detach: sc=%p\n", sc)); + + sc->sc_dying = 1; + for (i = 0; i < sc->sc_numser; i++) { + pp = &sc->sc_port[i]; + if (pp->p_tty != NULL) + ttygone(pp->p_tty); + } + + 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); + + if (sc->sc_port != NULL) { + for (i = 0; i < sc->sc_numser; i++) { + pp = &sc->sc_port[i]; + if (pp->p_tty != NULL) + ttyfree(pp->p_tty); + } + free(sc->sc_port, M_USBDEV); + sc->sc_port = NULL; + } + + if (--sc->sc_refcnt >= 0) { + /* Wait for processes to go away. */ + usb_detach_wait(sc->sc_dev); + } + + return (0); +} + +static int +ubserparam(struct tty *tp, struct termios *t) +{ + struct ubser_softc *sc; + struct ubser_port *pp; + + pp = tp->t_sc; + sc = pp->p_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 ubser_port *pp; + struct cblock *cbp; + usbd_status err; + u_char *data; + int cnt; + uint8_t serial; + + pp = tp->t_sc; + sc = pp->p_sc; + serial = pp->p_port; + DPRINTF(("ubserstart: sc = %p, tp = %p\n", sc, tp)); + + if (sc->sc_dying) + return; + + if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) { + ttwwakeup(tp); + DPRINTF(("ubserstart: stopped\n")); + return; + } + + 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)); + } + return; + } + } + + /* 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")); + return; + } + + 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_port[serial].p_obuf[0] = serial; + memcpy(sc->sc_port[serial].p_obuf + sc->sc_opkthdrlen, data, cnt); + + + DPRINTF(("ubserstart: %d chars\n", cnt)); + usbd_setup_xfer(sc->sc_port[serial].p_oxfer, sc->sc_bulkout_pipe, + (usbd_private_handle)tp, sc->sc_port[serial].p_obuf, + cnt + sc->sc_opkthdrlen, + USBD_NO_COPY, USBD_NO_TIMEOUT, ubserwritecb); + /* What can we do on error? */ + err = usbd_transfer(sc->sc_port[serial].p_oxfer); + if (err != USBD_IN_PROGRESS) + printf("ubserstart: err=%s\n", usbd_errstr(err)); + + ttwwakeup(tp); +} + +static void +ubserstop(struct tty *tp, int flag) +{ + struct ubser_softc *sc; + + sc = tp->t_sc; + + DPRINTF(("ubserstop: %d\n", flag)); + + if (flag & FWRITE) { + DPRINTF(("ubserstop: 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); + } + } + + 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; + struct ubser_port *pp; + u_int32_t cc; + + tp = (struct tty *)p; + pp = tp->t_sc; + sc = pp->p_sc; + + DPRINTF(("ubserwritecb: status = %d\n", status)); + + if (status == USBD_CANCELLED || sc->sc_dying) + goto error; + + if (status != USBD_NORMAL_COMPLETION) { + device_printf(sc->sc_dev, "ubserwritecb: %s\n", + 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) { + device_printf(sc->sc_dev, "sent size too small, cc = %d\n", + cc); + goto error; + } + + /* convert from USB bytes to tty bytes */ + cc -= sc->sc_opkthdrlen; + + 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); + + return; + +error: + CLR(tp->t_state, TS_BUSY); + 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; + + if (status == USBD_IOERROR) { + device_printf(sc->sc_dev, "ubserreadcb: %s - restarting\n", + usbd_errstr(status)); + goto resubmit; + } + + DPRINTF(("ubserreadcb: status = %d\n", status)); + + if (status != USBD_NORMAL_COMPLETION) { + if (status != USBD_CANCELLED) { + device_printf(sc->sc_dev, "ubserreadcb: %s\n", + usbd_errstr(status)); + } + if (status == USBD_STALLED) + usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); + 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) { + device_printf(sc->sc_dev, "invalid receive data size, %d chars\n", + cc); + goto resubmit; + } + + /* parse header */ + if (cc < 1) + goto resubmit; + DPRINTF(("ubserreadcb: got %d chars for serial %d\n", cc - 1, *cp)); + tp = sc->sc_port[*cp].p_tty; + cp++; + cc--; + + if (cc < 1) + goto resubmit; + + if (!(tp->t_state & TS_ISOPEN)) /* drop data for unused serials */ + goto resubmit; + + 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) + device_printf(sc->sc_dev, "lost %d chars\n", 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? */ + device_printf(sc->sc_dev, "lost %d chars\n", + cc); + break; + } + cc--; + cp++; + } + } + +resubmit: + err = ubserstartread(sc); + if (err) { + device_printf(sc->sc_dev, "read start failed\n"); + /* XXX what should we do now? */ + } + +} + +static void +ubser_cleanup(struct ubser_softc *sc) +{ + int i; + struct ubser_port *pp; + + 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++) { + pp = &sc->sc_port[i]; + if (pp->p_oxfer != NULL) { + usbd_free_xfer(pp->p_oxfer); + pp->p_oxfer = NULL; + } + } +} + +static int +ubseropen(struct tty *tp, struct cdev *dev) +{ + struct ubser_softc *sc; + struct ubser_port *pp; + + pp = tp->t_sc; + sc = pp->p_sc; + + sc->sc_refcnt++; /* XXX: wrong refcnt on error later on */ + return (0); +} + +static void +ubserclose(struct tty *tp) +{ + struct ubser_softc *sc; + struct ubser_port *pp; + + pp = tp->t_sc; + sc = pp->p_sc; + if (--sc->sc_refcnt < 0) + usb_detach_wakeup(sc->sc_dev); +} + +static void +ubserbreak(struct tty *tp, int sig) +{ + usb_device_request_t req; + struct ubser_softc *sc; + struct ubser_port *pp; + int error; + int alen; + + pp = tp->t_sc; + sc = pp->p_sc; + if (sig) { + DPRINTF(("ubser_break: TIOCSBRK\n")); + req.bmRequestType = UT_READ_VENDOR_INTERFACE; + req.bRequest = VENDOR_SET_BREAK; + USETW(req.wValue, pp->p_port); + 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); + } +} + +static int +ubsermodem(struct tty *tp, int sigon, int sigoff) +{ + + return (SER_DTR | SER_RTS | SER_DCD); +} + +MODULE_DEPEND(ubser, usb, 1, 1, 1); +DRIVER_MODULE(ubser, uhub, ubser_driver, ubser_devclass, usbd_driver_load, 0); |
