/* $NetBSD: umodem.c,v 1.45 2002/09/23 05:51:23 simonb Exp $ */ #include __FBSDID("$FreeBSD$"); /*- * Copyright (c) 2003, M. Warner Losh . * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #include #define USB_DEBUG_VAR umodem_debug #include #include #include #include #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_device_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)}, /* 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 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); return (error); } 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, 0 - 1, UDESCSUB_CDC_UNION, 0 - 1); if ((cud == NULL) || (cud->bLength < sizeof(*cud))) { device_printf(dev, "Missing descriptor. " "Assuming data interface is next.\n"); if (sc->sc_ctrl_iface_no == 0xFF) goto detach; else sc->sc_data_iface_no = sc->sc_ctrl_iface_no + 1; } 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_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); bzero(&ls, 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 > 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, 0 - 1, subtype, 0 - 1)); } 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); }