/*      $NetBSD: ubsa.c,v 1.43 2021/08/07 16:19:17 thorpej Exp $        */

/*-
* 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.
*/
/*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA ([email protected]).
*
* 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 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>
__KERNEL_RCSID(0, "$NetBSD: ubsa.c,v 1.43 2021/08/07 16:19:17 thorpej Exp $");

#ifdef _KERNEL_OPT
#include "opt_usb.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/kmem.h>
#include <sys/ioccom.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/device.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 <dev/usb/usbdevs.h>
#include <dev/usb/usb_quirks.h>

#include <dev/usb/ucomvar.h>
#include <dev/usb/ubsavar.h>

#ifdef UBSA_DEBUG
int             ubsadebug = 0;

#define DPRINTFN(n, x)  do { \
                               if (ubsadebug > (n)) \
                                       printf x; \
                       } while (0)
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)

static const struct     ucom_methods ubsa_methods = {
       .ucom_get_status = ubsa_get_status,
       .ucom_set = ubsa_set,
       .ucom_param = ubsa_param,
       .ucom_open = ubsa_open,
       .ucom_close = ubsa_close,
};

Static const struct ubsa_type {
       struct usb_devno ubsa_dev;
       int ubsa_quadumts;
} ubsa_devs[] = {
       /* BELKIN F5U103 */
       { { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103 }, 0 },
       /* BELKIN F5U120 */
       { { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120 }, 0 },
       /* GoHubs GO-COM232 */
       { { USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM }, 0 },
       /* GoHubs GO-COM232 */
       { { USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232 }, 0 },
       /* Peracom */
       { { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1 }, 0 },
       /* Option N.V. */
       { { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_MC3G }, 0 },
       { { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_QUADUMTS2 }, 1 },
       { { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_QUADUMTS }, 1 },
       { { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_QUADPLUSUMTS }, 1 },
       { { USB_VENDOR_OPTIONNV, USB_PRODUCT_OPTIONNV_HSDPA }, 1 },
};
#define ubsa_lookup(v, p) ((const struct ubsa_type *)usb_lookup(ubsa_devs, v, p))

int ubsa_match(device_t, cfdata_t, void *);
void ubsa_attach(device_t, device_t, void *);
void ubsa_childdet(device_t, device_t);
int ubsa_detach(device_t, int);

CFATTACH_DECL2_NEW(ubsa, sizeof(struct ubsa_softc),
   ubsa_match, ubsa_attach, ubsa_detach, NULL, NULL, ubsa_childdet);

int
ubsa_match(device_t parent, cfdata_t match, void *aux)
{
       struct usb_attach_arg *uaa = aux;

       return (ubsa_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ?
               UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
}

void
ubsa_attach(device_t parent, device_t self, void *aux)
{
       struct ubsa_softc *sc = device_private(self);
       struct usb_attach_arg *uaa = aux;
       struct usbd_device *dev = uaa->uaa_device;
       usb_config_descriptor_t *cdesc;
       usb_interface_descriptor_t *id;
       usb_endpoint_descriptor_t *ed;
       char *devinfop;
       usbd_status err;
       struct ucom_attach_args ucaa;
       int i;

       sc->sc_dev = self;
       sc->sc_dying = false;

       aprint_naive("\n");
       aprint_normal("\n");

       devinfop = usbd_devinfo_alloc(dev, 0);
       aprint_normal_dev(self, "%s\n", devinfop);
       usbd_devinfo_free(devinfop);

       sc->sc_udev = dev;
       sc->sc_config_index = UBSA_DEFAULT_CONFIG_INDEX;
       sc->sc_numif = 1; /* default device has one interface */

       /*
        * initialize rts, dtr variables to something
        * different from boolean 0, 1
        */
       sc->sc_dtr = -1;
       sc->sc_rts = -1;

       /*
        * Quad UMTS cards use different requests to
        * control com settings and only some.
        */
       sc->sc_quadumts = ubsa_lookup(uaa->uaa_vendor, uaa->uaa_product)->ubsa_quadumts;

       DPRINTF(("ubsa attach: sc = %p\n", sc));

       /* Move the device into the configured state. */
       err = usbd_set_config_index(dev, sc->sc_config_index, 1);
       if (err) {
               aprint_error_dev(self,
                   "failed to set configuration: %s\n",
                   usbd_errstr(err));
               goto error;
       }

       /* get the config descriptor */
       cdesc = usbd_get_config_descriptor(sc->sc_udev);

       if (cdesc == NULL) {
               aprint_error_dev(self,
                   "failed to get configuration descriptor\n");
               goto error;
       }

       sc->sc_intr_number = -1;
       sc->sc_intr_pipe = NULL;

       /* get the interfaces */
       err = usbd_device2interface_handle(dev, UBSA_IFACE_INDEX_OFFSET,
                        &sc->sc_iface[0]);
       if (err) {
               /* can not get main interface */
               goto error;
       }

       /* Find the endpoints */
       id = usbd_get_interface_descriptor(sc->sc_iface[0]);
       sc->sc_iface_number[0] = id->bInterfaceNumber;

       /* initialize endpoints */
       ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1;

       for (i = 0; i < id->bNumEndpoints; i++) {
               ed = usbd_interface2endpoint_descriptor(sc->sc_iface[0], i);
               if (ed == NULL) {
                       aprint_error_dev(self,
                            "no endpoint descriptor for %d\n", i);
                       break;
               }

               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) {
                       ucaa.ucaa_bulkin = ed->bEndpointAddress;
                       ucaa.ucaa_ibufsize = UGETW(ed->wMaxPacketSize);
               } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
                   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
                       ucaa.ucaa_bulkout = ed->bEndpointAddress;
                       ucaa.ucaa_obufsize = UGETW(ed->wMaxPacketSize);
               }
       } /* end of Endpoint loop */

       if (sc->sc_intr_number == -1) {
               aprint_error_dev(self, "Could not find interrupt in\n");
               goto error;
       }

       if (ucaa.ucaa_bulkin == -1) {
               aprint_error_dev(self, "Could not find data bulk in\n");
               goto error;
       }

       if (ucaa.ucaa_bulkout == -1) {
               aprint_error_dev(self, "Could not find data bulk out\n");
               goto error;
       }

       ucaa.ucaa_portno = 0;
       /* bulkin, bulkout set above */
       ucaa.ucaa_ibufsizepad = ucaa.ucaa_ibufsize;
       ucaa.ucaa_opkthdrlen = 0;
       ucaa.ucaa_device = dev;
       ucaa.ucaa_iface = sc->sc_iface[0];
       ucaa.ucaa_methods = &ubsa_methods;
       ucaa.ucaa_arg = sc;
       ucaa.ucaa_info = NULL;
       DPRINTF(("ubsa: int#=%d, in = %#x, out = %#x, intr = %#x\n",
           i, ucaa.ucaa_bulkin, ucaa.ucaa_bulkout, sc->sc_intr_number));
       sc->sc_subdevs[0] = config_found(self, &ucaa, ucomprint,
           CFARGS(.submatch = ucomsubmatch));

       usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);

       return;

error:
       sc->sc_dying = true;
       return;
}


void
ubsa_childdet(device_t self, device_t child)
{
       int i;
       struct ubsa_softc *sc = device_private(self);

       for (i = 0; i < sc->sc_numif; i++) {
               if (sc->sc_subdevs[i] == child)
                       break;
       }
       KASSERT(i < sc->sc_numif);
               sc->sc_subdevs[i] = NULL;
}

int
ubsa_detach(device_t self, int flags)
{
       struct ubsa_softc *sc = device_private(self);
       int i;
       int rv = 0;

       DPRINTF(("ubsa_detach: sc = %p\n", sc));

       sc->sc_dying = true;

       ubsa_close_pipe(sc);

       for (i = 0; i < sc->sc_numif; i++) {
               if (sc->sc_subdevs[i] != NULL) {
                       rv |= config_detach(sc->sc_subdevs[i], flags);
                       sc->sc_subdevs[i] = NULL;
               }
       }

       usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);

       return rv;
}

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