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

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/*-
* Copyright (c) 2002, Alexander Kabaev <kan.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) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA (ichiro@ichiro.org).
*
* 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/taskqueue.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/file.h>
#if __FreeBSD_version >= 500014
#include <sys/selinfo.h>
#else
#include <sys/select.h>
#endif
#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 ubsadebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
&ubsadebug, 0, "ubsa debug level");
#define DPRINTFN(n, x) do { \
if (ubsadebug > (n)) \
logprintf x; \
} while (0)
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
#define UBSA_MODVER 1 /* module version */
#define UBSA_CONFIG_INDEX 1
#define UBSA_IFACE_INDEX 0
#define UBSA_INTR_INTERVAL 100 /* ms */
#define UBSA_SET_BAUDRATE 0x00
#define UBSA_SET_STOP_BITS 0x01
#define UBSA_SET_DATA_BITS 0x02
#define UBSA_SET_PARITY 0x03
#define UBSA_SET_DTR 0x0A
#define UBSA_SET_RTS 0x0B
#define UBSA_SET_BREAK 0x0C
#define UBSA_SET_FLOW_CTRL 0x10
#define UBSA_PARITY_NONE 0x00
#define UBSA_PARITY_EVEN 0x01
#define UBSA_PARITY_ODD 0x02
#define UBSA_PARITY_MARK 0x03
#define UBSA_PARITY_SPACE 0x04
#define UBSA_FLOW_NONE 0x0000
#define UBSA_FLOW_OCTS 0x0001
#define UBSA_FLOW_ODSR 0x0002
#define UBSA_FLOW_IDSR 0x0004
#define UBSA_FLOW_IDTR 0x0008
#define UBSA_FLOW_IRTS 0x0010
#define UBSA_FLOW_ORTS 0x0020
#define UBSA_FLOW_UNKNOWN 0x0040
#define UBSA_FLOW_OXON 0x0080
#define UBSA_FLOW_IXON 0x0100
/* line status register */
#define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */
#define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */
#define UBSA_LSR_BI 0x10 /* Break detected */
#define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */
#define UBSA_LSR_PE 0x04 /* Parity error */
#define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */
#define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */
#define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */
/* modem status register */
/* All deltas are from the last read of the MSR. */
#define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */
#define UBSA_MSR_RI 0x40 /* Current Ring Indicator */
#define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */
#define UBSA_MSR_CTS 0x10 /* Current Clear to Send */
#define UBSA_MSR_DDCD 0x08 /* DCD has changed state */
#define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */
#define UBSA_MSR_DDSR 0x02 /* DSR has changed state */
#define UBSA_MSR_DCTS 0x01 /* CTS has changed state */
struct ubsa_softc {
struct ucom_softc sc_ucom;
int sc_iface_number; /* interface number */
usbd_interface_handle sc_intr_iface; /* interrupt interface */
int sc_intr_number; /* interrupt number */
usbd_pipe_handle sc_intr_pipe; /* interrupt pipe */
u_char *sc_intr_buf; /* interrupt buffer */
int sc_isize;
u_char sc_dtr; /* current DTR state */
u_char sc_rts; /* current RTS state */
u_char sc_lsr; /* Local status register */
u_char sc_msr; /* ubsa status register */
struct task sc_task;
};
Static void ubsa_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static void ubsa_notify(void *, int count);
Static void ubsa_get_status(void *, int, u_char *, u_char *);
Static void ubsa_set(void *, int, int, int);
Static int ubsa_param(void *, int, struct termios *);
Static int ubsa_open(void *, int);
Static void ubsa_close(void *, int);
Static int ubsa_request(struct ubsa_softc *, u_int8_t, u_int16_t);
Static void ubsa_dtr(struct ubsa_softc *, int);
Static void ubsa_rts(struct ubsa_softc *, int);
Static void ubsa_baudrate(struct ubsa_softc *, speed_t);
Static void ubsa_parity(struct ubsa_softc *, tcflag_t);
Static void ubsa_databits(struct ubsa_softc *, tcflag_t);
Static void ubsa_stopbits(struct ubsa_softc *, tcflag_t);
Static void ubsa_flow(struct ubsa_softc *, tcflag_t, tcflag_t);
struct ucom_callback ubsa_callback = {
ubsa_get_status,
ubsa_set,
ubsa_param,
NULL,
ubsa_open,
ubsa_close,
NULL,
NULL
};
Static const struct ubsa_product {
uint16_t vendor;
uint16_t product;
} ubsa_products [] = {
/* BELKIN F5U103 */
{ USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103 },
/* BELKIN F5U120 */
{ USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120 },
/* GoHubs GO-COM232 */
{ USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM },
/* GoHubs GO-COM232 */
{ USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232 },
/* Peracom */
{ USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1 },
/* Vodafone */
{ USB_VENDOR_VODAFONE, USB_PRODUCT_VODAFONE_MC3G },
{ 0, 0 }
};
Static device_probe_t ubsa_match;
Static device_attach_t ubsa_attach;
Static device_detach_t ubsa_detach;
Static device_method_t ubsa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ubsa_match),
DEVMETHOD(device_attach, ubsa_attach),
DEVMETHOD(device_detach, ubsa_detach),
{ 0, 0 }
};
Static driver_t ubsa_driver = {
"ucom",
ubsa_methods,
sizeof (struct ubsa_softc)
};
DRIVER_MODULE(ubsa, uhub, ubsa_driver, ucom_devclass, usbd_driver_load, 0);
MODULE_DEPEND(ubsa, usb, 1, 1, 1);
MODULE_DEPEND(ubsa, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);
MODULE_VERSION(ubsa, UBSA_MODVER);
USB_MATCH(ubsa)
{
USB_MATCH_START(ubsa, uaa);
int i;
if (uaa->iface != NULL)
return (UMATCH_NONE);
for (i = 0; ubsa_products[i].vendor != 0; i++) {
if (ubsa_products[i].vendor == uaa->vendor &&
ubsa_products[i].product == uaa->product) {
return (UMATCH_VENDOR_PRODUCT);
}
}
return (UMATCH_NONE);
}
USB_ATTACH(ubsa)
{
USB_ATTACH_START(ubsa, sc, uaa);
usbd_device_handle dev;
struct ucom_softc *ucom;
usb_config_descriptor_t *cdesc;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
char *devinfo;
const char *devname;
usbd_status err;
int i;
dev = uaa->device;
devinfo = malloc(1024, M_USBDEV, M_WAITOK);
ucom = &sc->sc_ucom;
bzero(sc, sizeof (struct ubsa_softc));
/*
* initialize rts, dtr variables to something
* different from boolean 0, 1
*/
sc->sc_dtr = -1;
sc->sc_rts = -1;
usbd_devinfo(dev, 0, devinfo);
/* USB_ATTACH_SETUP; */
ucom->sc_dev = self;
device_set_desc_copy(self, devinfo);
/* USB_ATTACH_SETUP; */
ucom->sc_udev = dev;
ucom->sc_iface = uaa->iface;
devname = USBDEVNAME(ucom->sc_dev);
printf("%s: %s\n", devname, devinfo);
DPRINTF(("ubsa attach: sc = %p\n", sc));
/* initialize endpoints */
ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
sc->sc_intr_number = -1;
sc->sc_intr_pipe = NULL;
/* Move the device into the configured state. */
err = usbd_set_config_index(dev, UBSA_CONFIG_INDEX, 1);
if (err) {
printf("%s: failed to set configuration: %s\n",
devname, usbd_errstr(err));
ucom->sc_dying = 1;
goto error;
}
/* get the config descriptor */
cdesc = usbd_get_config_descriptor(ucom->sc_udev);
if (cdesc == NULL) {
printf("%s: failed to get configuration descriptor\n",
USBDEVNAME(ucom->sc_dev));
ucom->sc_dying = 1;
goto error;
}
/* get the first interface */
err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX,
&ucom->sc_iface);
if (err) {
printf("%s: failed to get interface: %s\n",
devname, usbd_errstr(err));
ucom->sc_dying = 1;
goto error;
}
/* Find the endpoints */
id = usbd_get_interface_descriptor(ucom->sc_iface);
sc->sc_iface_number = id->bInterfaceNumber;
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(ucom->sc_iface, i);
if (ed == NULL) {
printf("%s: no endpoint descriptor for %d\n",
USBDEVNAME(ucom->sc_dev), i);
ucom->sc_dying = 1;
goto error;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
sc->sc_intr_number = ed->bEndpointAddress;
sc->sc_isize = UGETW(ed->wMaxPacketSize);
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
ucom->sc_bulkin_no = ed->bEndpointAddress;
ucom->sc_ibufsize = UGETW(ed->wMaxPacketSize);
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
ucom->sc_bulkout_no = ed->bEndpointAddress;
ucom->sc_obufsize = UGETW(ed->wMaxPacketSize);
}
}
if (sc->sc_intr_number == -1) {
printf("%s: Could not find interrupt in\n",
USBDEVNAME(ucom->sc_dev));
ucom->sc_dying = 1;
goto error;
}
/* keep interface for interrupt */
sc->sc_intr_iface = ucom->sc_iface;
if (ucom->sc_bulkin_no == -1) {
printf("%s: Could not find data bulk in\n",
USBDEVNAME(ucom->sc_dev));
ucom->sc_dying = 1;
goto error;
}
if (ucom->sc_bulkout_no == -1) {
printf("%s: Could not find data bulk out\n",
USBDEVNAME(ucom->sc_dev));
ucom->sc_dying = 1;
goto error;
}
ucom->sc_parent = sc;
ucom->sc_portno = UCOM_UNK_PORTNO;
/* bulkin, bulkout set above */
ucom->sc_ibufsizepad = ucom->sc_ibufsize;
ucom->sc_opkthdrlen = 0;
ucom->sc_callback = &ubsa_callback;
DPRINTF(("ubsa: in = 0x%x, out = 0x%x, intr = 0x%x\n",
ucom->sc_bulkin_no, ucom->sc_bulkout_no, sc->sc_intr_number));
TASK_INIT(&sc->sc_task, 0, ubsa_notify, sc);
ucom_attach(ucom);
free(devinfo, M_USBDEV);
USB_ATTACH_SUCCESS_RETURN;
error:
free(devinfo, M_USBDEV);
USB_ATTACH_ERROR_RETURN;
}
USB_DETACH(ubsa)
{
USB_DETACH_START(ubsa, sc);
int rv;
DPRINTF(("ubsa_detach: sc = %p\n", sc));
if (sc->sc_intr_pipe != NULL) {
usbd_abort_pipe(sc->sc_intr_pipe);
usbd_close_pipe(sc->sc_intr_pipe);
free(sc->sc_intr_buf, M_USBDEV);
sc->sc_intr_pipe = NULL;
}
sc->sc_ucom.sc_dying = 1;
#if 0
taskqueue_drain(taskqueue_swi_giant);
#endif
rv = ucom_detach(&sc->sc_ucom);
return (rv);
}
Static int
ubsa_request(struct ubsa_softc *sc, u_int8_t request, u_int16_t value)
{
usb_device_request_t req;
usbd_status err;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = request;
USETW(req.wValue, value);
USETW(req.wIndex, sc->sc_iface_number);
USETW(req.wLength, 0);
err = usbd_do_request(sc->sc_ucom.sc_udev, &req, 0);
if (err)
printf("%s: ubsa_request: %s\n",
USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err));
return (err);
}
Static void
ubsa_dtr(struct ubsa_softc *sc, int onoff)
{
DPRINTF(("ubsa_dtr: onoff = %d\n", onoff));
if (sc->sc_dtr == onoff)
return;
sc->sc_dtr = onoff;
ubsa_request(sc, UBSA_SET_DTR, onoff ? 1 : 0);
}
Static void
ubsa_rts(struct ubsa_softc *sc, int onoff)
{
DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
if (sc->sc_rts == onoff)
return;
sc->sc_rts = onoff;
ubsa_request(sc, UBSA_SET_RTS, onoff ? 1 : 0);
}
Static void
ubsa_break(struct ubsa_softc *sc, int onoff)
{
DPRINTF(("ubsa_rts: onoff = %d\n", onoff));
ubsa_request(sc, UBSA_SET_BREAK, onoff ? 1 : 0);
}
Static void
ubsa_set(void *addr, int portno, int reg, int onoff)
{
struct ubsa_softc *sc;
sc = addr;
switch (reg) {
case UCOM_SET_DTR:
ubsa_dtr(sc, onoff);
break;
case UCOM_SET_RTS:
ubsa_rts(sc, onoff);
break;
case UCOM_SET_BREAK:
ubsa_break(sc, onoff);
break;
default:
break;
}
}
Static void
ubsa_baudrate(struct ubsa_softc *sc, speed_t speed)
{
u_int16_t value = 0;
DPRINTF(("ubsa_baudrate: speed = %d\n", speed));
switch(speed) {
case B0:
break;
case B300:
case B600:
case B1200:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
case B230400:
value = B230400 / speed;
break;
default:
printf("%s: ubsa_param: unsupported baudrate, "
"forcing default of 9600\n",
USBDEVNAME(sc->sc_ucom.sc_dev));
value = B230400 / B9600;
break;
};
if (speed == B0) {
ubsa_flow(sc, 0, 0);
ubsa_dtr(sc, 0);
ubsa_rts(sc, 0);
} else
ubsa_request(sc, UBSA_SET_BAUDRATE, value);
}
Static void
ubsa_parity(struct ubsa_softc *sc, tcflag_t cflag)
{
int value;
DPRINTF(("ubsa_parity: cflag = 0x%x\n", cflag));
if (cflag & PARENB)
value = (cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
else
value = UBSA_PARITY_NONE;
ubsa_request(sc, UBSA_SET_PARITY, value);
}
Static void
ubsa_databits(struct ubsa_softc *sc, tcflag_t cflag)
{
int value;
DPRINTF(("ubsa_databits: cflag = 0x%x\n", cflag));
switch (cflag & CSIZE) {
case CS5: value = 0; break;
case CS6: value = 1; break;
case CS7: value = 2; break;
case CS8: value = 3; break;
default:
printf("%s: ubsa_param: unsupported databits requested, "
"forcing default of 8\n",
USBDEVNAME(sc->sc_ucom.sc_dev));
value = 3;
}
ubsa_request(sc, UBSA_SET_DATA_BITS, value);
}
Static void
ubsa_stopbits(struct ubsa_softc *sc, tcflag_t cflag)
{
int value;
DPRINTF(("ubsa_stopbits: cflag = 0x%x\n", cflag));
value = (cflag & CSTOPB) ? 1 : 0;
ubsa_request(sc, UBSA_SET_STOP_BITS, value);
}
Static void
ubsa_flow(struct ubsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
{
int value;
DPRINTF(("ubsa_flow: cflag = 0x%x, iflag = 0x%x\n", cflag, iflag));
value = 0;
if (cflag & CRTSCTS)
value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
if (iflag & (IXON|IXOFF))
value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
ubsa_request(sc, UBSA_SET_FLOW_CTRL, value);
}
Static int
ubsa_param(void *addr, int portno, struct termios *ti)
{
struct ubsa_softc *sc;
sc = addr;
DPRINTF(("ubsa_param: sc = %p\n", sc));
ubsa_baudrate(sc, ti->c_ospeed);
ubsa_parity(sc, ti->c_cflag);
ubsa_databits(sc, ti->c_cflag);
ubsa_stopbits(sc, ti->c_cflag);
ubsa_flow(sc, ti->c_cflag, ti->c_iflag);
return (0);
}
Static int
ubsa_open(void *addr, int portno)
{
struct ubsa_softc *sc;
int err;
sc = addr;
if (sc->sc_ucom.sc_dying)
return (ENXIO);
DPRINTF(("ubsa_open: sc = %p\n", sc));
if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
err = usbd_open_pipe_intr(sc->sc_intr_iface,
sc->sc_intr_number,
USBD_SHORT_XFER_OK,
&sc->sc_intr_pipe,
sc,
sc->sc_intr_buf,
sc->sc_isize,
ubsa_intr,
UBSA_INTR_INTERVAL);
if (err) {
printf("%s: cannot open interrupt pipe (addr %d)\n",
USBDEVNAME(sc->sc_ucom.sc_dev),
sc->sc_intr_number);
return (EIO);
}
}
return (0);
}
Static void
ubsa_close(void *addr, int portno)
{
struct ubsa_softc *sc;
int err;
sc = addr;
if (sc->sc_ucom.sc_dying)
return;
DPRINTF(("ubsa_close: close\n"));
if (sc->sc_intr_pipe != NULL) {
err = usbd_abort_pipe(sc->sc_intr_pipe);
if (err)
printf("%s: abort interrupt pipe failed: %s\n",
USBDEVNAME(sc->sc_ucom.sc_dev),
usbd_errstr(err));
err = usbd_close_pipe(sc->sc_intr_pipe);
if (err)
printf("%s: close interrupt pipe failed: %s\n",
USBDEVNAME(sc->sc_ucom.sc_dev),
usbd_errstr(err));
free(sc->sc_intr_buf, M_USBDEV);
sc->sc_intr_pipe = NULL;
}
}
Static void
ubsa_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct ubsa_softc *sc;
u_char *buf;
sc = priv;
buf = sc->sc_intr_buf;
if (sc->sc_ucom.sc_dying)
return;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
return;
DPRINTF(("%s: ubsa_intr: abnormal status: %s\n",
USBDEVNAME(sc->sc_ucom.sc_dev),
usbd_errstr(status)));
usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
return;
}
/* incidentally, Belkin adapter status bits match UART 16550 bits */
sc->sc_lsr = buf[2];
sc->sc_msr = buf[3];
DPRINTF(("%s: ubsa lsr = 0x%02x, msr = 0x%02x\n",
USBDEVNAME(sc->sc_ucom.sc_dev), sc->sc_lsr, sc->sc_msr));
taskqueue_enqueue(taskqueue_swi_giant, &sc->sc_task);
}
/* Handle delayed events. */
Static void
ubsa_notify(void *arg, int count)
{
struct ubsa_softc *sc;
sc = arg;
ucom_status_change(&sc->sc_ucom);
}
Static void
ubsa_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
{
struct ubsa_softc *sc;
DPRINTF(("ubsa_get_status\n"));
sc = addr;
if (lsr != NULL)
*lsr = sc->sc_lsr;
if (msr != NULL)
*msr = sc->sc_msr;
}
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