364 lines
7.8 KiB
C
364 lines
7.8 KiB
C
/* $NetBSD: uark.c,v 1.6 2012/10/27 17:18:38 chs Exp $ */
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/* $OpenBSD: uark.c,v 1.13 2009/10/13 19:33:17 pirofti Exp $ */
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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/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.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/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/ucomvar.h>
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#ifdef UARK_DEBUG
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#define DPRINTFN(n, x) do { if (uarkdebug > (n)) printf x; } while (0)
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int uarkebug = 0;
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#else
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#define DPRINTFN(n, x)
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#endif
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#define DPRINTF(x) DPRINTFN(0, x)
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#define UARKBUFSZ 256
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#define UARK_CONFIG_NO 0
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#define UARK_IFACE_NO 0
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#define UARK_SET_DATA_BITS(x) (x - 5)
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#define UARK_PARITY_NONE 0x00
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#define UARK_PARITY_ODD 0x08
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#define UARK_PARITY_EVEN 0x18
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#define UARK_STOP_BITS_1 0x00
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#define UARK_STOP_BITS_2 0x04
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#define UARK_BAUD_REF 3000000
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#define UARK_WRITE 0x40
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#define UARK_READ 0xc0
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#define UARK_REQUEST 0xfe
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struct uark_softc {
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device_t sc_dev;
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usbd_device_handle sc_udev;
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usbd_interface_handle sc_iface;
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device_t sc_subdev;
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u_char sc_msr;
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u_char sc_lsr;
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u_char sc_dying;
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};
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void uark_get_status(void *, int portno, u_char *lsr, u_char *msr);
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void uark_set(void *, int, int, int);
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int uark_param(void *, int, struct termios *);
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void uark_break(void *, int, int);
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int uark_cmd(struct uark_softc *, uint16_t, uint16_t);
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struct ucom_methods uark_methods = {
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uark_get_status,
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uark_set,
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uark_param,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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};
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static const struct usb_devno uark_devs[] = {
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{ USB_VENDOR_ARKMICROCHIPS, USB_PRODUCT_ARKMICROCHIPS_USBSERIAL },
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};
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int uark_match(device_t, cfdata_t, void *);
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void uark_attach(device_t, device_t, void *);
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int uark_detach(device_t, int);
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int uark_activate(device_t, enum devact);
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extern struct cfdriver uark_cd;
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CFATTACH_DECL_NEW(uark, sizeof(struct uark_softc), uark_match, uark_attach, uark_detach, uark_activate);
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int
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uark_match(device_t parent, cfdata_t match, void *aux)
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{
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struct usb_attach_arg *uaa = aux;
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return (usb_lookup(uark_devs, uaa->vendor, uaa->product) != NULL) ?
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UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
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}
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void
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uark_attach(device_t parent, device_t self, void *aux)
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{
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struct uark_softc *sc = device_private(self);
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struct usb_attach_arg *uaa = aux;
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usbd_device_handle dev = uaa->device;
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char *devinfop;
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struct ucom_attach_args uca;
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usb_interface_descriptor_t *id;
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usb_endpoint_descriptor_t *ed;
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usbd_status error;
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int i;
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memset(&uca, 0, sizeof(uca));
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sc->sc_dev = self;
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devinfop = usbd_devinfo_alloc(dev, 0);
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aprint_naive("\n");
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aprint_normal("\n");
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aprint_normal_dev(self, "%s\n", devinfop);
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usbd_devinfo_free(devinfop);
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sc->sc_udev = dev;
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if (usbd_set_config_index(sc->sc_udev, UARK_CONFIG_NO, 1) != 0) {
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aprint_error_dev(self, "could not set configuration no\n");
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sc->sc_dying = 1;
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return;
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}
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/* get the first interface handle */
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error = usbd_device2interface_handle(sc->sc_udev, UARK_IFACE_NO,
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&sc->sc_iface);
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if (error != 0) {
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aprint_error_dev(self, "could not get interface handle\n");
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sc->sc_dying = 1;
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return;
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}
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id = usbd_get_interface_descriptor(sc->sc_iface);
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uca.bulkin = uca.bulkout = -1;
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for (i = 0; i < id->bNumEndpoints; i++) {
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ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
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if (ed == NULL) {
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aprint_error_dev(self, "no endpoint descriptor found for %d\n",
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i);
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sc->sc_dying = 1;
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return;
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}
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if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
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UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
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uca.bulkin = ed->bEndpointAddress;
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else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
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UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK)
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uca.bulkout = ed->bEndpointAddress;
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}
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if (uca.bulkin == -1 || uca.bulkout == -1) {
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aprint_error_dev(self, "missing endpoint\n");
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sc->sc_dying = 1;
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return;
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}
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uca.ibufsize = UARKBUFSZ;
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uca.obufsize = UARKBUFSZ;
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uca.ibufsizepad = UARKBUFSZ;
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uca.opkthdrlen = 0;
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uca.device = sc->sc_udev;
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uca.iface = sc->sc_iface;
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uca.methods = &uark_methods;
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uca.arg = sc;
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uca.info = NULL;
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usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
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sc->sc_dev);
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sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &uca,
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ucomprint, ucomsubmatch);
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return;
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}
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int
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uark_detach(device_t self, int flags)
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{
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struct uark_softc *sc = device_private(self);
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int rv = 0;
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sc->sc_dying = 1;
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if (sc->sc_subdev != NULL) {
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rv = config_detach(sc->sc_subdev, flags);
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sc->sc_subdev = NULL;
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}
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usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
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sc->sc_dev);
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return rv;
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}
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int
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uark_activate(device_t self, enum devact act)
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{
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struct uark_softc *sc = device_private(self);
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int rv = 0;
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switch (act) {
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case DVACT_DEACTIVATE:
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if (sc->sc_subdev != NULL)
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rv = config_deactivate(sc->sc_subdev);
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sc->sc_dying = 1;
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break;
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}
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return (rv);
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}
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void
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uark_set(void *vsc, int portno, int reg, int onoff)
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{
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struct uark_softc *sc = vsc;
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switch (reg) {
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case UCOM_SET_BREAK:
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uark_break(sc, portno, onoff);
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return;
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case UCOM_SET_DTR:
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case UCOM_SET_RTS:
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default:
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return;
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}
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}
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int
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uark_param(void *vsc, int portno, struct termios *t)
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{
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struct uark_softc *sc = (struct uark_softc *)vsc;
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int data;
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switch (t->c_ospeed) {
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case 300:
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case 600:
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case 1200:
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case 1800:
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case 2400:
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case 4800:
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case 9600:
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case 19200:
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case 38400:
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case 57600:
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case 115200:
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uark_cmd(sc, 3, 0x83);
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uark_cmd(sc, 0, (UARK_BAUD_REF / t->c_ospeed) & 0xFF);
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uark_cmd(sc, 1, (UARK_BAUD_REF / t->c_ospeed) >> 8);
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uark_cmd(sc, 3, 0x03);
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break;
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default:
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return (EINVAL);
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}
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if (ISSET(t->c_cflag, CSTOPB))
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data = UARK_STOP_BITS_2;
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else
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data = UARK_STOP_BITS_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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data |= UARK_PARITY_ODD;
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else
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data |= UARK_PARITY_EVEN;
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} else
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data |= UARK_PARITY_NONE;
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switch (ISSET(t->c_cflag, CSIZE)) {
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case CS5:
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data |= UARK_SET_DATA_BITS(5);
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break;
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case CS6:
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data |= UARK_SET_DATA_BITS(6);
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break;
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case CS7:
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data |= UARK_SET_DATA_BITS(7);
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break;
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case CS8:
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data |= UARK_SET_DATA_BITS(8);
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break;
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}
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uark_cmd(sc, 3, 0x00);
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uark_cmd(sc, 3, data);
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#if 0
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/* XXX flow control */
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if (ISSET(t->c_cflag, CRTSCTS))
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/* rts/cts flow ctl */
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} else if (ISSET(t->c_iflag, IXON|IXOFF)) {
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/* xon/xoff flow ctl */
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} else {
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/* disable flow ctl */
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}
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#endif
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return (0);
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}
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void
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uark_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
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{
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struct uark_softc *sc = vsc;
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if (msr != NULL)
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*msr = sc->sc_msr;
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if (lsr != NULL)
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*lsr = sc->sc_lsr;
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}
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void
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uark_break(void *vsc, int portno, int onoff)
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{
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#if 0
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struct uark_softc *sc = vsc;
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#ifdef UARK_DEBUG
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aprint_normal_dev(sc->sc_dev, "break %s!\n", onoff ? "on" : "off");
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#endif
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if (onoff)
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/* break on */
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uark_cmd(sc, 4, 0x01);
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else
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uark_cmd(sc, 4, 0x00);
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#endif
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}
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int
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uark_cmd(struct uark_softc *sc, uint16_t index, uint16_t value)
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{
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usb_device_request_t req;
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usbd_status err;
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req.bmRequestType = UARK_WRITE;
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req.bRequest = UARK_REQUEST;
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USETW(req.wValue, value);
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USETW(req.wIndex, index);
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USETW(req.wLength, 0);
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err = usbd_do_request(sc->sc_udev, &req, NULL);
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if (err)
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return (EIO);
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return (0);
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}
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