IABSD.fr/src/sys/dev/usb/uscom.c

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• Author : patrick
  Date : 2019-02-24 17:36:28
  Hash : 90f3beec
  Message : Dynastream ANTUSB-2 works well on uscom(4), from Jan Klemkow.

• sys/dev/usb/uscom.c

• /*	$OpenBSD: uscom.c,v 1.7 2019/02/24 17:36:28 patrick Exp $	*/
  
  /*
   * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <sys/param.h>
  #include <sys/systm.h>
  #include <sys/kernel.h>
  #include <sys/conf.h>
  #include <sys/tty.h>
  #include <sys/device.h>
  
  #include <dev/usb/usb.h>
  #include <dev/usb/usbdi.h>
  #include <dev/usb/usbdi_util.h>
  #include <dev/usb/usbdevs.h>
  
  #include <dev/usb/ucomvar.h>
  
  #define USCOMBUFSZ		256
  #define USCOM_IFACE_NO		0
  
  struct uscom_softc {
  	struct device		 sc_dev;
  	struct usbd_device	*sc_udev;
  	struct usbd_interface	*sc_iface;
  	struct device		*sc_subdev;
  };
  
  struct ucom_methods uscom_methods = {
  	NULL,
  	NULL,
  	NULL,
  	NULL,
  	NULL,
  	NULL,
  	NULL,
  	NULL,
  };
  
  static const struct usb_devno uscom_devs[] = {
  	{ USB_VENDOR_HP,		USB_PRODUCT_HP_HPX9GP },
  	{ USB_VENDOR_DYNASTREAM,	USB_PRODUCT_DYNASTREAM_ANTUSB2 },
  	{ USB_VENDOR_DYNASTREAM,	USB_PRODUCT_DYNASTREAM_ANTUSBM }
  };
  
  int	 uscom_match(struct device *, void *, void *);
  void	 uscom_attach(struct device *, struct device *, void *);
  int	 uscom_detach(struct device *, int);
  
  struct cfdriver uscom_cd = {
  	NULL, "uscom", DV_DULL
  };
  
  const struct cfattach uscom_ca = {
  	sizeof(struct uscom_softc), uscom_match, uscom_attach, uscom_detach
  };
  
  int
  uscom_match(struct device *parent, void *match, void *aux)
  {
  	struct usb_attach_arg *uaa = aux;
  
  	if (uaa->iface == NULL)
  		return UMATCH_NONE;
  
  	return (usb_lookup(uscom_devs, uaa->vendor, uaa->product) != NULL) ?
  	    UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
  }
  
  void
  uscom_attach(struct device *parent, struct device *self, void *aux)
  {
  	struct uscom_softc *sc = (struct uscom_softc *)self;
  	struct usb_attach_arg *uaa = aux;
  	struct ucom_attach_args uca;
  	usb_interface_descriptor_t *id;
  	usb_endpoint_descriptor_t *ed;
  	usbd_status error;
  	int i;
  
  	bzero(&uca, sizeof(uca));
  	sc->sc_udev = uaa->device;
  
  	/* get the first interface handle */
  	error = usbd_device2interface_handle(sc->sc_udev, USCOM_IFACE_NO,
  	    &sc->sc_iface);
  	if (error != 0) {
  		printf("%s: could not get interface handle\n",
  		    sc->sc_dev.dv_xname);
  		usbd_deactivate(sc->sc_udev);
  		return;
  	}
  
  	id = usbd_get_interface_descriptor(sc->sc_iface);
  
  	uca.bulkin = uca.bulkout = -1;
  	for (i = 0; i < id->bNumEndpoints; i++) {
  		ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
  		if (ed == NULL) {
  			printf("%s: no endpoint descriptor found for %d\n",
  			    sc->sc_dev.dv_xname, i);
  			usbd_deactivate(sc->sc_udev);
  			return;
  		}
  
  		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
  			uca.bulkin = ed->bEndpointAddress;
  		else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
  		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
  			uca.bulkout = ed->bEndpointAddress;
  	}
  
  	if (uca.bulkin == -1 || uca.bulkout == -1) {
  		printf("%s: missing endpoint\n", sc->sc_dev.dv_xname);
  		usbd_deactivate(sc->sc_udev);
  		return;
  	}
  
  	uca.ibufsize = USCOMBUFSZ;
  	uca.obufsize = USCOMBUFSZ;
  	uca.ibufsizepad = USCOMBUFSZ;
  	uca.opkthdrlen = 0;
  	uca.device = sc->sc_udev;
  	uca.iface = sc->sc_iface;
  	uca.methods = &uscom_methods;
  	uca.arg = sc;
  	uca.info = NULL;
  	
  	sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
  }
  
  int
  uscom_detach(struct device *self, int flags)
  {
  	struct uscom_softc *sc = (struct uscom_softc *)self;
  	int rv = 0;
  
  	if (sc->sc_subdev != NULL) {
  		rv = config_detach(sc->sc_subdev, flags);
  		sc->sc_subdev = NULL;
  	}
  
  	return (rv);
  }