322 lines
8.9 KiB
C
322 lines
8.9 KiB
C
/* $NetBSD: uxrcom.c,v 1.2 2020/07/09 13:43:04 simonb Exp $ */
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/* $OpenBSD: uxrcom.c,v 1.1 2019/03/27 22:08:51 kettenis Exp $ */
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/*
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* Copyright (c) 1998, 2020 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net) at
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* Carlstedt Research & Technology and Simon Burge.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uxrcom.c,v 1.2 2020/07/09 13:43:04 simonb Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/tty.h>
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#include <sys/device.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbcdc.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usbdevs.h>
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#include <dev/usb/usbhist.h>
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#include <dev/usb/usbdevs.h>
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#include <dev/usb/ucomvar.h>
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#include <dev/usb/umodemvar.h>
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#define UXRCOMBUFSZ 64
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/* XXX uxrcomreg.h */
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#define XR_SET_REG 0
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#define XR_GET_REGN 1
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#define XR_FLOW_CONTROL 0x000c
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#define XR_FLOW_CONTROL_ON 1
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#define XR_FLOW_CONTROL_OFF 0
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#define XR_TX_BREAK 0x0014
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#define XR_TX_BREAK_ON 1
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#define XR_TX_BREAK_OFF 0
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#define XR_GPIO_SET 0x001d
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#define XR_GPIO_CLEAR 0x001e
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#define XR_GPIO3 (1 << 3)
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#define XR_GPIO5 (1 << 5)
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/* for XR_SET_REG/XR_GET_REGN specify which uart block to use */
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#define XR_UART_BLOCK(sc) (((sc)->sc_ctl_iface_no / 2) << NBBY)
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#ifdef UXRCOM_DEBUG
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#define DPRINTF(x) if (uxrcomdebug) printf x
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int uxrcomdebug = 0;
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#else
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#define DPRINTF(x)
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#endif
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static void uxrcom_set(void *, int, int, int);
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static int uxrcom_param(void *, int, struct termios *);
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static void uxrcom_break(void *, int, int);
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static const struct ucom_methods uxrcom_methods = {
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.ucom_get_status = umodem_get_status,
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.ucom_set = uxrcom_set,
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.ucom_param = uxrcom_param,
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.ucom_ioctl = NULL, /* TODO */
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.ucom_open = umodem_open,
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.ucom_close = umodem_close,
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};
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static const struct usb_devno uxrcom_devs[] = {
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{ USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1410 },
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{ USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1412 },
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{ USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1414 },
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};
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#define uxrcom_lookup(v, p) usb_lookup(uxrcom_devs, v, p)
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static int uxrcom_match(device_t, cfdata_t, void *);
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static void uxrcom_attach(device_t, device_t, void *);
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static int uxrcom_detach(device_t, int);
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CFATTACH_DECL_NEW(uxrcom, sizeof(struct umodem_softc), uxrcom_match,
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uxrcom_attach, uxrcom_detach, NULL);
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static int
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uxrcom_match(device_t parent, cfdata_t match, void *aux)
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{
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struct usbif_attach_arg *uiaa = aux;
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if (uiaa->uiaa_class != UICLASS_CDC ||
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uiaa->uiaa_subclass != UISUBCLASS_ABSTRACT_CONTROL_MODEL ||
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!(uiaa->uiaa_proto == UIPROTO_CDC_NOCLASS ||
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uiaa->uiaa_proto == UIPROTO_CDC_AT))
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return UMATCH_NONE;
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return uxrcom_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL ?
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UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
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}
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static void
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uxrcom_attach(device_t parent, device_t self, void *aux)
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{
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struct umodem_softc *sc = device_private(self);
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struct usbif_attach_arg *uiaa = aux;
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struct ucom_attach_args ucaa;
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memset(&ucaa, 0, sizeof(ucaa));
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ucaa.ucaa_portno = UCOM_UNK_PORTNO;
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ucaa.ucaa_methods = &uxrcom_methods;
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ucaa.ucaa_info = NULL;
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ucaa.ucaa_ibufsize = UXRCOMBUFSZ;
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ucaa.ucaa_obufsize = UXRCOMBUFSZ;
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ucaa.ucaa_ibufsizepad = UXRCOMBUFSZ;
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if (!pmf_device_register(self, NULL, NULL))
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aprint_error_dev(self, "couldn't establish power handler");
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umodem_common_attach(self, sc, uiaa, &ucaa);
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}
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static int
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uxrcom_detach(device_t self, int flags)
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{
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struct umodem_softc *sc = device_private(self);
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pmf_device_deregister(self);
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return umodem_common_detach(sc, flags);
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}
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static void
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uxrcom_set(void *addr, int portno, int reg, int onoff)
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{
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struct umodem_softc *sc = addr;
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usb_device_request_t req;
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uint16_t index;
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uint8_t value;
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if (sc->sc_dying)
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return;
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index = onoff ? XR_GPIO_SET : XR_GPIO_CLEAR;
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switch (reg) {
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case UCOM_SET_DTR:
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value = XR_GPIO3;
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break;
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case UCOM_SET_RTS:
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value = XR_GPIO5;
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break;
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case UCOM_SET_BREAK:
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uxrcom_break(sc, portno, onoff);
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return;
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default:
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return;
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}
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = XR_SET_REG;
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USETW(req.wValue, value);
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USETW(req.wIndex, index | XR_UART_BLOCK(sc));
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USETW(req.wLength, 0);
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usbd_do_request(sc->sc_udev, &req, NULL);
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}
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static usbd_status
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uxrcom_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state)
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{
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usb_device_request_t req;
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usbd_status err;
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DPRINTF(("%s: rate=%d fmt=%d parity=%d bits=%d\n", __func__,
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UGETDW(state->dwDTERate), state->bCharFormat,
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state->bParityType, state->bDataBits));
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if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) {
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DPRINTF(("%s: already set\n", __func__));
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return USBD_NORMAL_COMPLETION;
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}
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req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
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req.bRequest = UCDC_SET_LINE_CODING;
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USETW(req.wValue, 0);
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USETW(req.wIndex, sc->sc_ctl_iface_no);
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USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
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err = usbd_do_request(sc->sc_udev, &req, state);
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if (err) {
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DPRINTF(("%s: failed, err=%u\n", __func__, err));
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return err;
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}
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sc->sc_line_state = *state;
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return USBD_NORMAL_COMPLETION;
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}
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static int
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uxrcom_param(void *addr, int portno, struct termios *t)
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{
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struct umodem_softc *sc = addr;
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usb_device_request_t req;
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usbd_status err;
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usb_cdc_line_state_t ls;
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uint8_t flowctrl;
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if (sc->sc_dying)
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return EIO;
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/* slowest supported baud rate is 1200 bps, max is 12 Mbps */
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if (t->c_ospeed < 1200 || t->c_ospeed > 12000000)
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return (EINVAL);
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USETDW(ls.dwDTERate, t->c_ospeed);
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if (ISSET(t->c_cflag, CSTOPB))
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ls.bCharFormat = UCDC_STOP_BIT_2;
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else
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ls.bCharFormat = UCDC_STOP_BIT_1;
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if (ISSET(t->c_cflag, PARENB)) {
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if (ISSET(t->c_cflag, PARODD))
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ls.bParityType = UCDC_PARITY_ODD;
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else
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ls.bParityType = UCDC_PARITY_EVEN;
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} else
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ls.bParityType = UCDC_PARITY_NONE;
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switch (ISSET(t->c_cflag, CSIZE)) {
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case CS5:
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ls.bDataBits = 5;
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break;
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case CS6:
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ls.bDataBits = 6;
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break;
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case CS7:
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ls.bDataBits = 7;
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break;
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case CS8:
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ls.bDataBits = 8;
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break;
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}
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err = uxrcom_set_line_coding(sc, &ls);
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if (err) {
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DPRINTF(("%s: err=%u\n", __func__, err));
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return EIO;
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}
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if (ISSET(t->c_cflag, CRTSCTS)) {
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/* rts/cts flow ctl */
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flowctrl = XR_FLOW_CONTROL_ON;
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} else {
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/* disable flow ctl */
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flowctrl = XR_FLOW_CONTROL_OFF;
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}
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = XR_SET_REG;
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USETW(req.wValue, flowctrl);
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USETW(req.wIndex, XR_FLOW_CONTROL | XR_UART_BLOCK(sc));
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USETW(req.wLength, 0);
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usbd_do_request(sc->sc_udev, &req, NULL);
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return (0);
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}
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static void
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uxrcom_break(void *addr, int portno, int onoff)
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{
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struct umodem_softc *sc = addr;
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usb_device_request_t req;
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uint8_t brk = onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF;
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DPRINTF(("%s: port=%d onoff=%d\n", __func__, portno, onoff));
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = XR_SET_REG;
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USETW(req.wValue, brk);
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USETW(req.wIndex, XR_TX_BREAK | XR_UART_BLOCK(sc));
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USETW(req.wLength, 0);
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(void)usbd_do_request(sc->sc_udev, &req, 0);
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}
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