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| Current File : //usr/src/sys/dev/usb/serial/umodem.c |
/* $NetBSD: umodem.c,v 1.45 2002/09/23 05:51:23 simonb Exp $ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/usb/serial/umodem.c 235000 2012-05-04 15:05:30Z hselasky $");
/*-
* Copyright (c) 2003, M. Warner Losh <imp@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) 1998 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.
*/
/*
* Comm Class spec: http://www.usb.org/developers/devclass_docs/usbccs10.pdf
* http://www.usb.org/developers/devclass_docs/usbcdc11.pdf
* http://www.usb.org/developers/devclass_docs/cdc_wmc10.zip
*/
/*
* TODO:
* - Add error recovery in various places; the big problem is what
* to do in a callback if there is an error.
* - Implement a Call Device for modems without multiplexed commands.
*
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usb_cdc.h>
#include "usbdevs.h"
#include <dev/usb/usb_ioctl.h>
#define USB_DEBUG_VAR umodem_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/quirk/usb_quirk.h>
#include <dev/usb/serial/usb_serial.h>
#ifdef USB_DEBUG
static int umodem_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, umodem, CTLFLAG_RW, 0, "USB umodem");
SYSCTL_INT(_hw_usb_umodem, OID_AUTO, debug, CTLFLAG_RW,
&umodem_debug, 0, "Debug level");
#endif
static const STRUCT_USB_HOST_ID umodem_devs[] = {
/* Generic Modem class match */
{USB_IFACE_CLASS(UICLASS_CDC),
USB_IFACE_SUBCLASS(UISUBCLASS_ABSTRACT_CONTROL_MODEL),
USB_IFACE_PROTOCOL(UIPROTO_CDC_AT)},
/* Huawei Modem class match */
{USB_IFACE_CLASS(UICLASS_CDC),
USB_IFACE_SUBCLASS(UISUBCLASS_ABSTRACT_CONTROL_MODEL),
USB_IFACE_PROTOCOL(0xFF)},
/* Kyocera AH-K3001V */
{USB_VPI(USB_VENDOR_KYOCERA, USB_PRODUCT_KYOCERA_AHK3001V, 1)},
{USB_VPI(USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5720, 1)},
{USB_VPI(USB_VENDOR_CURITEL, USB_PRODUCT_CURITEL_PC5740, 1)},
};
/*
* As speeds for umodem deivces increase, these numbers will need to
* be increased. They should be good for G3 speeds and below.
*
* TODO: The TTY buffers should be increased!
*/
#define UMODEM_BUF_SIZE 1024
enum {
UMODEM_BULK_WR,
UMODEM_BULK_RD,
UMODEM_INTR_RD,
UMODEM_N_TRANSFER,
};
#define UMODEM_MODVER 1 /* module version */
struct umodem_softc {
struct ucom_super_softc sc_super_ucom;
struct ucom_softc sc_ucom;
struct usb_xfer *sc_xfer[UMODEM_N_TRANSFER];
struct usb_device *sc_udev;
struct mtx sc_mtx;
uint16_t sc_line;
uint8_t sc_lsr; /* local status register */
uint8_t sc_msr; /* modem status register */
uint8_t sc_ctrl_iface_no;
uint8_t sc_data_iface_no;
uint8_t sc_iface_index[2];
uint8_t sc_cm_over_data;
uint8_t sc_cm_cap; /* CM capabilities */
uint8_t sc_acm_cap; /* ACM capabilities */
};
static device_probe_t umodem_probe;
static device_attach_t umodem_attach;
static device_detach_t umodem_detach;
static usb_callback_t umodem_intr_callback;
static usb_callback_t umodem_write_callback;
static usb_callback_t umodem_read_callback;
static void umodem_start_read(struct ucom_softc *);
static void umodem_stop_read(struct ucom_softc *);
static void umodem_start_write(struct ucom_softc *);
static void umodem_stop_write(struct ucom_softc *);
static void umodem_get_caps(struct usb_attach_arg *, uint8_t *, uint8_t *);
static void umodem_cfg_get_status(struct ucom_softc *, uint8_t *,
uint8_t *);
static int umodem_pre_param(struct ucom_softc *, struct termios *);
static void umodem_cfg_param(struct ucom_softc *, struct termios *);
static int umodem_ioctl(struct ucom_softc *, uint32_t, caddr_t, int,
struct thread *);
static void umodem_cfg_set_dtr(struct ucom_softc *, uint8_t);
static void umodem_cfg_set_rts(struct ucom_softc *, uint8_t);
static void umodem_cfg_set_break(struct ucom_softc *, uint8_t);
static void *umodem_get_desc(struct usb_attach_arg *, uint8_t, uint8_t);
static usb_error_t umodem_set_comm_feature(struct usb_device *, uint8_t,
uint16_t, uint16_t);
static void umodem_poll(struct ucom_softc *ucom);
static void umodem_find_data_iface(struct usb_attach_arg *uaa,
uint8_t, uint8_t *, uint8_t *);
static const struct usb_config umodem_config[UMODEM_N_TRANSFER] = {
[UMODEM_BULK_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.if_index = 0,
.bufsize = UMODEM_BUF_SIZE,
.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
.callback = &umodem_write_callback,
},
[UMODEM_BULK_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.if_index = 0,
.bufsize = UMODEM_BUF_SIZE,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = &umodem_read_callback,
},
[UMODEM_INTR_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.if_index = 1,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,.no_pipe_ok = 1,},
.bufsize = 0, /* use wMaxPacketSize */
.callback = &umodem_intr_callback,
},
};
static const struct ucom_callback umodem_callback = {
.ucom_cfg_get_status = &umodem_cfg_get_status,
.ucom_cfg_set_dtr = &umodem_cfg_set_dtr,
.ucom_cfg_set_rts = &umodem_cfg_set_rts,
.ucom_cfg_set_break = &umodem_cfg_set_break,
.ucom_cfg_param = &umodem_cfg_param,
.ucom_pre_param = &umodem_pre_param,
.ucom_ioctl = &umodem_ioctl,
.ucom_start_read = &umodem_start_read,
.ucom_stop_read = &umodem_stop_read,
.ucom_start_write = &umodem_start_write,
.ucom_stop_write = &umodem_stop_write,
.ucom_poll = &umodem_poll,
};
static device_method_t umodem_methods[] = {
DEVMETHOD(device_probe, umodem_probe),
DEVMETHOD(device_attach, umodem_attach),
DEVMETHOD(device_detach, umodem_detach),
{0, 0}
};
static devclass_t umodem_devclass;
static driver_t umodem_driver = {
.name = "umodem",
.methods = umodem_methods,
.size = sizeof(struct umodem_softc),
};
DRIVER_MODULE(umodem, uhub, umodem_driver, umodem_devclass, NULL, 0);
MODULE_DEPEND(umodem, ucom, 1, 1, 1);
MODULE_DEPEND(umodem, usb, 1, 1, 1);
MODULE_VERSION(umodem, UMODEM_MODVER);
static int
umodem_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
int error;
DPRINTFN(11, "\n");
if (uaa->usb_mode != USB_MODE_HOST)
return (ENXIO);
error = usbd_lookup_id_by_uaa(umodem_devs, sizeof(umodem_devs), uaa);
if (error)
return (error);
return (BUS_PROBE_GENERIC);
}
static int
umodem_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct umodem_softc *sc = device_get_softc(dev);
struct usb_cdc_cm_descriptor *cmd;
struct usb_cdc_union_descriptor *cud;
uint8_t i;
int error;
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, "umodem", NULL, MTX_DEF);
sc->sc_ctrl_iface_no = uaa->info.bIfaceNum;
sc->sc_iface_index[1] = uaa->info.bIfaceIndex;
sc->sc_udev = uaa->device;
umodem_get_caps(uaa, &sc->sc_cm_cap, &sc->sc_acm_cap);
/* get the data interface number */
cmd = umodem_get_desc(uaa, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM);
if ((cmd == NULL) || (cmd->bLength < sizeof(*cmd))) {
cud = usbd_find_descriptor(uaa->device, NULL,
uaa->info.bIfaceIndex, UDESC_CS_INTERFACE,
0xFF, UDESCSUB_CDC_UNION, 0xFF);
if ((cud == NULL) || (cud->bLength < sizeof(*cud))) {
DPRINTF("Missing descriptor. "
"Assuming data interface is next.\n");
if (sc->sc_ctrl_iface_no == 0xFF) {
goto detach;
} else {
uint8_t class_match = 0;
/* set default interface number */
sc->sc_data_iface_no = 0xFF;
/* try to find the data interface backwards */
umodem_find_data_iface(uaa,
uaa->info.bIfaceIndex - 1,
&sc->sc_data_iface_no, &class_match);
/* try to find the data interface forwards */
umodem_find_data_iface(uaa,
uaa->info.bIfaceIndex + 1,
&sc->sc_data_iface_no, &class_match);
/* check if nothing was found */
if (sc->sc_data_iface_no == 0xFF)
goto detach;
}
} else {
sc->sc_data_iface_no = cud->bSlaveInterface[0];
}
} else {
sc->sc_data_iface_no = cmd->bDataInterface;
}
device_printf(dev, "data interface %d, has %sCM over "
"data, has %sbreak\n",
sc->sc_data_iface_no,
sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ",
sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no ");
/* get the data interface too */
for (i = 0;; i++) {
struct usb_interface *iface;
struct usb_interface_descriptor *id;
iface = usbd_get_iface(uaa->device, i);
if (iface) {
id = usbd_get_interface_descriptor(iface);
if (id && (id->bInterfaceNumber == sc->sc_data_iface_no)) {
sc->sc_iface_index[0] = i;
usbd_set_parent_iface(uaa->device, i, uaa->info.bIfaceIndex);
break;
}
} else {
device_printf(dev, "no data interface\n");
goto detach;
}
}
if (usb_test_quirk(uaa, UQ_ASSUME_CM_OVER_DATA)) {
sc->sc_cm_over_data = 1;
} else {
if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) {
if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE) {
error = umodem_set_comm_feature
(uaa->device, sc->sc_ctrl_iface_no,
UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED);
/* ignore any errors */
}
sc->sc_cm_over_data = 1;
}
}
error = usbd_transfer_setup(uaa->device,
sc->sc_iface_index, sc->sc_xfer,
umodem_config, UMODEM_N_TRANSFER,
sc, &sc->sc_mtx);
if (error) {
goto detach;
}
/* clear stall at first run */
mtx_lock(&sc->sc_mtx);
usbd_xfer_set_stall(sc->sc_xfer[UMODEM_BULK_WR]);
usbd_xfer_set_stall(sc->sc_xfer[UMODEM_BULK_RD]);
mtx_unlock(&sc->sc_mtx);
error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
&umodem_callback, &sc->sc_mtx);
if (error) {
goto detach;
}
ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
return (0);
detach:
umodem_detach(dev);
return (ENXIO);
}
static void
umodem_find_data_iface(struct usb_attach_arg *uaa,
uint8_t iface_index, uint8_t *p_data_no, uint8_t *p_match_class)
{
struct usb_interface_descriptor *id;
struct usb_interface *iface;
iface = usbd_get_iface(uaa->device, iface_index);
/* check for end of interfaces */
if (iface == NULL)
return;
id = usbd_get_interface_descriptor(iface);
/* check for non-matching interface class */
if (id->bInterfaceClass != UICLASS_CDC_DATA ||
id->bInterfaceSubClass != UISUBCLASS_DATA) {
/* if we got a class match then return */
if (*p_match_class)
return;
} else {
*p_match_class = 1;
}
DPRINTFN(11, "Match at index %u\n", iface_index);
*p_data_no = id->bInterfaceNumber;
}
static void
umodem_start_read(struct ucom_softc *ucom)
{
struct umodem_softc *sc = ucom->sc_parent;
/* start interrupt endpoint, if any */
usbd_transfer_start(sc->sc_xfer[UMODEM_INTR_RD]);
/* start read endpoint */
usbd_transfer_start(sc->sc_xfer[UMODEM_BULK_RD]);
}
static void
umodem_stop_read(struct ucom_softc *ucom)
{
struct umodem_softc *sc = ucom->sc_parent;
/* stop interrupt endpoint, if any */
usbd_transfer_stop(sc->sc_xfer[UMODEM_INTR_RD]);
/* stop read endpoint */
usbd_transfer_stop(sc->sc_xfer[UMODEM_BULK_RD]);
}
static void
umodem_start_write(struct ucom_softc *ucom)
{
struct umodem_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UMODEM_BULK_WR]);
}
static void
umodem_stop_write(struct ucom_softc *ucom)
{
struct umodem_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UMODEM_BULK_WR]);
}
static void
umodem_get_caps(struct usb_attach_arg *uaa, uint8_t *cm, uint8_t *acm)
{
struct usb_cdc_cm_descriptor *cmd;
struct usb_cdc_acm_descriptor *cad;
cmd = umodem_get_desc(uaa, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM);
if ((cmd == NULL) || (cmd->bLength < sizeof(*cmd))) {
DPRINTF("no CM desc (faking one)\n");
*cm = USB_CDC_CM_DOES_CM | USB_CDC_CM_OVER_DATA;
} else
*cm = cmd->bmCapabilities;
cad = umodem_get_desc(uaa, UDESC_CS_INTERFACE, UDESCSUB_CDC_ACM);
if ((cad == NULL) || (cad->bLength < sizeof(*cad))) {
DPRINTF("no ACM desc\n");
*acm = 0;
} else
*acm = cad->bmCapabilities;
}
static void
umodem_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
{
struct umodem_softc *sc = ucom->sc_parent;
DPRINTF("\n");
*lsr = sc->sc_lsr;
*msr = sc->sc_msr;
}
static int
umodem_pre_param(struct ucom_softc *ucom, struct termios *t)
{
return (0); /* we accept anything */
}
static void
umodem_cfg_param(struct ucom_softc *ucom, struct termios *t)
{
struct umodem_softc *sc = ucom->sc_parent;
struct usb_cdc_line_state ls;
struct usb_device_request req;
DPRINTF("sc=%p\n", sc);
memset(&ls, 0, sizeof(ls));
USETDW(ls.dwDTERate, t->c_ospeed);
ls.bCharFormat = (t->c_cflag & CSTOPB) ?
UCDC_STOP_BIT_2 : UCDC_STOP_BIT_1;
ls.bParityType = (t->c_cflag & PARENB) ?
((t->c_cflag & PARODD) ?
UCDC_PARITY_ODD : UCDC_PARITY_EVEN) : UCDC_PARITY_NONE;
switch (t->c_cflag & CSIZE) {
case CS5:
ls.bDataBits = 5;
break;
case CS6:
ls.bDataBits = 6;
break;
case CS7:
ls.bDataBits = 7;
break;
case CS8:
ls.bDataBits = 8;
break;
}
DPRINTF("rate=%d fmt=%d parity=%d bits=%d\n",
UGETDW(ls.dwDTERate), ls.bCharFormat,
ls.bParityType, ls.bDataBits);
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_LINE_CODING;
USETW(req.wValue, 0);
req.wIndex[0] = sc->sc_ctrl_iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, sizeof(ls));
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, &ls, 0, 1000);
}
static int
umodem_ioctl(struct ucom_softc *ucom, uint32_t cmd, caddr_t data,
int flag, struct thread *td)
{
struct umodem_softc *sc = ucom->sc_parent;
int error = 0;
DPRINTF("cmd=0x%08x\n", cmd);
switch (cmd) {
case USB_GET_CM_OVER_DATA:
*(int *)data = sc->sc_cm_over_data;
break;
case USB_SET_CM_OVER_DATA:
if (*(int *)data != sc->sc_cm_over_data) {
/* XXX change it */
}
break;
default:
DPRINTF("unknown\n");
error = ENOIOCTL;
break;
}
return (error);
}
static void
umodem_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
{
struct umodem_softc *sc = ucom->sc_parent;
struct usb_device_request req;
DPRINTF("onoff=%d\n", onoff);
if (onoff)
sc->sc_line |= UCDC_LINE_DTR;
else
sc->sc_line &= ~UCDC_LINE_DTR;
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
USETW(req.wValue, sc->sc_line);
req.wIndex[0] = sc->sc_ctrl_iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static void
umodem_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
{
struct umodem_softc *sc = ucom->sc_parent;
struct usb_device_request req;
DPRINTF("onoff=%d\n", onoff);
if (onoff)
sc->sc_line |= UCDC_LINE_RTS;
else
sc->sc_line &= ~UCDC_LINE_RTS;
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
USETW(req.wValue, sc->sc_line);
req.wIndex[0] = sc->sc_ctrl_iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static void
umodem_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
{
struct umodem_softc *sc = ucom->sc_parent;
struct usb_device_request req;
uint16_t temp;
DPRINTF("onoff=%d\n", onoff);
if (sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK) {
temp = onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF;
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SEND_BREAK;
USETW(req.wValue, temp);
req.wIndex[0] = sc->sc_ctrl_iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
}
static void
umodem_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct usb_cdc_notification pkt;
struct umodem_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint16_t wLen;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen < 8) {
DPRINTF("received short packet, "
"%d bytes\n", actlen);
goto tr_setup;
}
if (actlen > (int)sizeof(pkt)) {
DPRINTF("truncating message\n");
actlen = sizeof(pkt);
}
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, &pkt, actlen);
actlen -= 8;
wLen = UGETW(pkt.wLength);
if (actlen > wLen) {
actlen = wLen;
}
if (pkt.bmRequestType != UCDC_NOTIFICATION) {
DPRINTF("unknown message type, "
"0x%02x, on notify pipe!\n",
pkt.bmRequestType);
goto tr_setup;
}
switch (pkt.bNotification) {
case UCDC_N_SERIAL_STATE:
/*
* Set the serial state in ucom driver based on
* the bits from the notify message
*/
if (actlen < 2) {
DPRINTF("invalid notification "
"length, %d bytes!\n", actlen);
break;
}
DPRINTF("notify bytes = %02x%02x\n",
pkt.data[0],
pkt.data[1]);
/* Currently, lsr is always zero. */
sc->sc_lsr = 0;
sc->sc_msr = 0;
if (pkt.data[0] & UCDC_N_SERIAL_RI) {
sc->sc_msr |= SER_RI;
}
if (pkt.data[0] & UCDC_N_SERIAL_DSR) {
sc->sc_msr |= SER_DSR;
}
if (pkt.data[0] & UCDC_N_SERIAL_DCD) {
sc->sc_msr |= SER_DCD;
}
ucom_status_change(&sc->sc_ucom);
break;
default:
DPRINTF("unknown notify message: 0x%02x\n",
pkt.bNotification);
break;
}
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
umodem_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct umodem_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint32_t actlen;
switch (USB_GET_STATE(xfer)) {
case USB_ST_SETUP:
case USB_ST_TRANSFERRED:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (ucom_get_data(&sc->sc_ucom, pc, 0,
UMODEM_BUF_SIZE, &actlen)) {
usbd_xfer_set_frame_len(xfer, 0, actlen);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
umodem_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct umodem_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTF("actlen=%d\n", actlen);
pc = usbd_xfer_get_frame(xfer, 0);
ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void *
umodem_get_desc(struct usb_attach_arg *uaa, uint8_t type, uint8_t subtype)
{
return (usbd_find_descriptor(uaa->device, NULL, uaa->info.bIfaceIndex,
type, 0xFF, subtype, 0xFF));
}
static usb_error_t
umodem_set_comm_feature(struct usb_device *udev, uint8_t iface_no,
uint16_t feature, uint16_t state)
{
struct usb_device_request req;
struct usb_cdc_abstract_state ast;
DPRINTF("feature=%d state=%d\n",
feature, state);
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_COMM_FEATURE;
USETW(req.wValue, feature);
req.wIndex[0] = iface_no;
req.wIndex[1] = 0;
USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH);
USETW(ast.wState, state);
return (usbd_do_request(udev, NULL, &req, &ast));
}
static int
umodem_detach(device_t dev)
{
struct umodem_softc *sc = device_get_softc(dev);
DPRINTF("sc=%p\n", sc);
ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
usbd_transfer_unsetup(sc->sc_xfer, UMODEM_N_TRANSFER);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
umodem_poll(struct ucom_softc *ucom)
{
struct umodem_softc *sc = ucom->sc_parent;
usbd_transfer_poll(sc->sc_xfer, UMODEM_N_TRANSFER);
}