a08e403bc2
When the printer is turned off the pipe write will cause and error, which causes lpd to close the device and reopen it to clear the error. After a short while the device will disappear from the bus but lpd will have opened the ulpt0 port by then. ulpt_status will check for status without checking the sc->dying flag and panic the kernel when the device finally disappears from the bus. Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
601 lines
14 KiB
C
601 lines
14 KiB
C
/* $NetBSD: ulpt.c,v 1.37 2000/04/27 15:26:49 augustss Exp $ */
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/* $FreeBSD$ */
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/*
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* Copyright (c) 1998 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.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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* Printer Class spec: http://www.usb.org/developers/data/usbprn10.pdf
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*/
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/* XXX Note in the manpage the ULPT_NOPRIME version of the printer */
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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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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#include <sys/proc.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#elif defined(__FreeBSD__)
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#include <sys/module.h>
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#include <sys/bus.h>
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#endif
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#include <sys/uio.h>
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#include <sys/conf.h>
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#include <sys/vnode.h>
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#include <sys/syslog.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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#define TIMEOUT hz*16 /* wait up to 16 seconds for a ready */
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#define STEP hz/4
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#define LPTPRI (PZERO+8)
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#define ULPT_BSIZE 16384
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#ifdef ULPT_DEBUG
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#define DPRINTF(x) if (ulptdebug) logprintf x
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#define DPRINTFN(n,x) if (ulptdebug>(n)) logprintf x
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int ulptdebug = 0;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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#define UR_GET_DEVICE_ID 0
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#define UR_GET_PORT_STATUS 1
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#define UR_SOFT_RESET 2
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#define LPS_NERR 0x08 /* printer no error */
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#define LPS_SELECT 0x10 /* printer selected */
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#define LPS_NOPAPER 0x20 /* printer out of paper */
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#define LPS_INVERT (LPS_SELECT|LPS_NERR)
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#define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER)
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struct ulpt_softc {
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USBBASEDEVICE sc_dev;
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usbd_device_handle sc_udev; /* device */
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usbd_interface_handle sc_iface; /* interface */
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int sc_ifaceno;
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usbd_pipe_handle sc_bulkpipe; /* bulk pipe */
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int sc_bulk;
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u_char sc_state;
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#define ULPT_OPEN 0x01 /* device is open */
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#define ULPT_OBUSY 0x02 /* printer is busy doing output */
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#define ULPT_INIT 0x04 /* waiting to initialize for open */
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u_char sc_flags;
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#define ULPT_NOPRIME 0x40 /* don't prime on open */
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u_char sc_laststatus;
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int sc_refcnt;
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u_char sc_dying;
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#if defined(__FreeBSD__)
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dev_t dev;
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dev_t dev_noprime;
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#endif
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};
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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cdev_decl(ulpt);
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#elif defined(__FreeBSD__)
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Static d_open_t ulptopen;
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Static d_close_t ulptclose;
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Static d_write_t ulptwrite;
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Static d_ioctl_t ulptioctl;
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#define ULPT_CDEV_MAJOR 113
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Static struct cdevsw ulpt_cdevsw = {
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/* open */ ulptopen,
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/* close */ ulptclose,
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/* read */ noread,
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/* write */ ulptwrite,
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/* ioctl */ ulptioctl,
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/* poll */ nopoll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "ulpt",
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/* maj */ ULPT_CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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/* bmaj */ -1
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};
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#endif
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void ulpt_disco(void *);
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int ulpt_do_write(struct ulpt_softc *, struct uio *uio, int);
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int ulpt_status(struct ulpt_softc *);
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void ulpt_reset(struct ulpt_softc *);
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int ulpt_statusmsg(u_char, struct ulpt_softc *);
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void ieee1284_print_id(char *);
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#define ULPTUNIT(s) (minor(s) & 0x1f)
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#define ULPTFLAGS(s) (minor(s) & 0xe0)
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USB_DECLARE_DRIVER(ulpt);
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USB_MATCH(ulpt)
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{
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USB_MATCH_START(ulpt, uaa);
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usb_interface_descriptor_t *id;
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DPRINTFN(10,("ulpt_match\n"));
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if (uaa->iface == NULL)
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return (UMATCH_NONE);
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id = usbd_get_interface_descriptor(uaa->iface);
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if (id != NULL &&
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id->bInterfaceClass == UCLASS_PRINTER &&
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id->bInterfaceSubClass == USUBCLASS_PRINTER &&
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(id->bInterfaceProtocol == UPROTO_PRINTER_UNI ||
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id->bInterfaceProtocol == UPROTO_PRINTER_BI))
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return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
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return (UMATCH_NONE);
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}
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USB_ATTACH(ulpt)
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{
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USB_ATTACH_START(ulpt, sc, uaa);
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usbd_device_handle dev = uaa->device;
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usbd_interface_handle iface = uaa->iface;
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usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface);
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char devinfo[1024];
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usb_endpoint_descriptor_t *ed;
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usbd_status err;
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DPRINTFN(10,("ulpt_attach: sc=%p\n", sc));
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usbd_devinfo(dev, 0, devinfo);
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USB_ATTACH_SETUP;
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printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
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devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
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/* Figure out which endpoint is the bulk out endpoint. */
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ed = usbd_interface2endpoint_descriptor(iface, 0);
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if (ed == NULL)
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goto nobulk;
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if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_OUT ||
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(ed->bmAttributes & UE_XFERTYPE) != UE_BULK) {
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/* In case we are using a bidir protocol... */
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ed = usbd_interface2endpoint_descriptor(iface, 1);
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if (ed == NULL)
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goto nobulk;
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if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_OUT ||
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(ed->bmAttributes & UE_XFERTYPE) != UE_BULK)
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goto nobulk;
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}
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sc->sc_bulk = ed->bEndpointAddress;
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DPRINTFN(10, ("ulpt_attach: bulk=%d\n", sc->sc_bulk));
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sc->sc_iface = iface;
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err = usbd_interface2device_handle(iface, &sc->sc_udev);
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if (err) {
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sc->sc_dying = 1;
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USB_ATTACH_ERROR_RETURN;
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}
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sc->sc_ifaceno = id->bInterfaceNumber;
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#if 0
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/*
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* This code is disabled because for some mysterious reason it causes
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* printing not to work. But only sometimes, and mostly with
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* UHCI and less often with OHCI. *sigh*
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*/
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{
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usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
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usb_device_request_t req;
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int len, alen;
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req.bmRequestType = UT_READ_CLASS_INTERFACE;
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req.bRequest = UR_GET_DEVICE_ID;
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USETW(req.wValue, cd->bConfigurationValue);
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USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting);
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USETW(req.wLength, sizeof devinfo - 1);
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err = usbd_do_request_flags(dev, &req, devinfo, USBD_SHORT_XFER_OK,
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&alen);
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if (err) {
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printf("%s: cannot get device id\n", USBDEVNAME(sc->sc_dev));
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} else if (alen <= 2) {
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printf("%s: empty device id, no printer connected?\n",
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USBDEVNAME(sc->sc_dev));
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} else {
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/* devinfo now contains an IEEE-1284 device ID */
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len = ((devinfo[0] & 0xff) << 8) | (devinfo[1] & 0xff);
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if (len > sizeof devinfo - 3)
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len = sizeof devinfo - 3;
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devinfo[len] = 0;
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printf("%s: device id <", USBDEVNAME(sc->sc_dev));
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ieee1284_print_id(devinfo+2);
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printf(">\n");
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}
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}
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#endif
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#if defined(__FreeBSD__)
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sc->dev = make_dev(&ulpt_cdevsw, device_get_unit(self),
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UID_ROOT, GID_OPERATOR, 0644, "ulpt%d", device_get_unit(self));
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sc->dev_noprime = make_dev(&ulpt_cdevsw,
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device_get_unit(self)|ULPT_NOPRIME,
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UID_ROOT, GID_OPERATOR, 0644, "unlpt%d", device_get_unit(self));
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#endif
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USB_ATTACH_SUCCESS_RETURN;
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nobulk:
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printf("%s: could not find bulk endpoint\n", USBDEVNAME(sc->sc_dev));
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sc->sc_dying = 1;
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USB_ATTACH_ERROR_RETURN;
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}
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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int
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ulpt_activate(self, act)
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device_ptr_t self;
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enum devact act;
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{
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struct ulpt_softc *sc = (struct ulpt_softc *)self;
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switch (act) {
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case DVACT_ACTIVATE:
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return (EOPNOTSUPP);
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break;
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case DVACT_DEACTIVATE:
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sc->sc_dying = 1;
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break;
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}
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return (0);
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}
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#endif
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USB_DETACH(ulpt)
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{
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USB_DETACH_START(ulpt, sc);
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int s;
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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int maj, mn;
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#elif defined(__FreeBSD__)
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struct vnode *vp;
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#endif
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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DPRINTF(("ulpt_detach: sc=%p flags=%d\n", sc, flags));
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#elif defined(__FreeBSD__)
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DPRINTF(("ulpt_detach: sc=%p\n", sc));
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#endif
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sc->sc_dying = 1;
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if (sc->sc_bulkpipe != NULL)
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usbd_abort_pipe(sc->sc_bulkpipe);
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s = splusb();
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if (--sc->sc_refcnt >= 0) {
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/* There is noone to wake, aborting the pipe is enough */
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/* Wait for processes to go away. */
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usb_detach_wait(USBDEV(sc->sc_dev));
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}
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splx(s);
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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/* locate the major number */
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for (maj = 0; maj < nchrdev; maj++)
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if (cdevsw[maj].d_open == ulptopen)
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break;
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/* Nuke the vnodes for any open instances (calls close). */
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mn = self->dv_unit;
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vdevgone(maj, mn, mn, VCHR);
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#elif defined(__FreeBSD__)
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vp = SLIST_FIRST(&sc->dev->si_hlist);
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if (vp)
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VOP_REVOKE(vp, REVOKEALL);
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vp = SLIST_FIRST(&sc->dev_noprime->si_hlist);
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if (vp)
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VOP_REVOKE(vp, REVOKEALL);
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destroy_dev(sc->dev);
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destroy_dev(sc->dev_noprime);
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#endif
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return (0);
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}
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int
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ulpt_status(sc)
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struct ulpt_softc *sc;
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{
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usb_device_request_t req;
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usbd_status err;
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u_char status;
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req.bmRequestType = UT_READ_CLASS_INTERFACE;
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req.bRequest = UR_GET_PORT_STATUS;
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USETW(req.wValue, 0);
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USETW(req.wIndex, sc->sc_ifaceno);
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USETW(req.wLength, 1);
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err = usbd_do_request(sc->sc_udev, &req, &status);
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DPRINTFN(1, ("ulpt_status: status=0x%02x err=%d\n", status, err));
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if (!err)
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return (status);
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else
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return (0);
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}
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void
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ulpt_reset(sc)
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struct ulpt_softc *sc;
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{
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usb_device_request_t req;
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DPRINTFN(1, ("ulpt_reset\n"));
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req.bmRequestType = UT_WRITE_CLASS_OTHER;
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req.bRequest = UR_SOFT_RESET;
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USETW(req.wValue, 0);
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USETW(req.wIndex, sc->sc_ifaceno);
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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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/*
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* Reset the printer, then wait until it's selected and not busy.
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*/
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int
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ulptopen(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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u_char flags = ULPTFLAGS(dev);
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struct ulpt_softc *sc;
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usbd_status err;
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int spin, error;
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USB_GET_SC_OPEN(ulpt, ULPTUNIT(dev), sc);
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if (sc == NULL || sc->sc_iface == NULL || sc->sc_dying)
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return (ENXIO);
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if (sc->sc_state)
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return (EBUSY);
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sc->sc_state = ULPT_INIT;
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sc->sc_flags = flags;
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DPRINTF(("ulptopen: flags=0x%x\n", (unsigned)flags));
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#if defined(ULPT_DEBUG) && defined(__FreeBSD__)
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/* Ignoring these flags might not be a good idea */
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if ((flags & ~ULPT_NOPRIME) != 0)
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printf("ulptopen: flags ignored: %b\n", flags,
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"\20\3POS_INIT\4POS_ACK\6PRIME_OPEN\7AUTOLF\10BYPASS");
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#endif
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if ((flags & ULPT_NOPRIME) == 0)
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ulpt_reset(sc);
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for (spin = 0; (ulpt_status(sc) & LPS_SELECT) == 0; spin += STEP) {
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if (spin >= TIMEOUT) {
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sc->sc_state = 0;
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return (EBUSY);
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}
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/* wait 1/4 second, give up if we get a signal */
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error = tsleep((caddr_t)sc, LPTPRI | PCATCH, "ulptop", STEP);
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if (error != EWOULDBLOCK) {
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sc->sc_state = 0;
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return (error);
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}
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if (sc->sc_dying) {
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sc->sc_state = 0;
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return (ENXIO);
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}
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}
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err = usbd_open_pipe(sc->sc_iface, sc->sc_bulk, 0, &sc->sc_bulkpipe);
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if (err) {
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sc->sc_state = 0;
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return (EIO);
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}
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sc->sc_state = ULPT_OPEN;
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DPRINTF(("ulptopen: done\n"));
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return (0);
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}
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int
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ulpt_statusmsg(status, sc)
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u_char status;
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struct ulpt_softc *sc;
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{
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u_char new;
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status = (status ^ LPS_INVERT) & LPS_MASK;
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new = status & ~sc->sc_laststatus;
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sc->sc_laststatus = status;
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if (new & LPS_SELECT)
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log(LOG_NOTICE, "%s: offline\n", USBDEVNAME(sc->sc_dev));
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else if (new & LPS_NOPAPER)
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log(LOG_NOTICE, "%s: out of paper\n", USBDEVNAME(sc->sc_dev));
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else if (new & LPS_NERR)
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log(LOG_NOTICE, "%s: output error\n", USBDEVNAME(sc->sc_dev));
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return (status);
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}
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int
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ulptclose(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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struct ulpt_softc *sc;
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USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
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if (sc->sc_state != ULPT_OPEN)
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/* We are being forced to close before the open completed. */
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return (0);
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usbd_close_pipe(sc->sc_bulkpipe);
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sc->sc_bulkpipe = 0;
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sc->sc_state = 0;
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DPRINTF(("ulptclose: closed\n"));
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return (0);
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}
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int
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ulpt_do_write(sc, uio, flags)
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struct ulpt_softc *sc;
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|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
u_int32_t n;
|
|
int error = 0;
|
|
void *bufp;
|
|
usbd_xfer_handle xfer;
|
|
usbd_status err;
|
|
|
|
DPRINTF(("ulptwrite\n"));
|
|
xfer = usbd_alloc_xfer(sc->sc_udev);
|
|
if (xfer == NULL)
|
|
return (ENOMEM);
|
|
bufp = usbd_alloc_buffer(xfer, ULPT_BSIZE);
|
|
if (bufp == NULL) {
|
|
usbd_free_xfer(xfer);
|
|
return (ENOMEM);
|
|
}
|
|
while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
|
|
ulpt_statusmsg(ulpt_status(sc), sc);
|
|
error = uiomove(bufp, n, uio);
|
|
if (error)
|
|
break;
|
|
DPRINTFN(1, ("ulptwrite: transfer %d bytes\n", n));
|
|
err = usbd_bulk_transfer(xfer, sc->sc_bulkpipe, USBD_NO_COPY,
|
|
USBD_NO_TIMEOUT, bufp, &n, "ulptwr");
|
|
if (err) {
|
|
DPRINTF(("ulptwrite: error=%d\n", err));
|
|
error = EIO;
|
|
break;
|
|
}
|
|
}
|
|
usbd_free_xfer(xfer);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ulptwrite(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
struct ulpt_softc *sc;
|
|
int error;
|
|
|
|
USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
|
|
|
|
if (sc->sc_dying)
|
|
return (EIO);
|
|
|
|
sc->sc_refcnt++;
|
|
error = ulpt_do_write(sc, uio, flags);
|
|
if (--sc->sc_refcnt < 0)
|
|
usb_detach_wakeup(USBDEV(sc->sc_dev));
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
ulptioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
int error = 0;
|
|
|
|
switch (cmd) {
|
|
default:
|
|
error = ENODEV;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
#if 0
|
|
/* XXX This does not belong here. */
|
|
/*
|
|
* Print select parts of a IEEE 1284 device ID.
|
|
*/
|
|
void
|
|
ieee1284_print_id(str)
|
|
char *str;
|
|
{
|
|
char *p, *q;
|
|
|
|
for (p = str-1; p; p = strchr(p, ';')) {
|
|
p++; /* skip ';' */
|
|
if (strncmp(p, "MFG:", 4) == 0 ||
|
|
strncmp(p, "MANUFACTURER:", 14) == 0 ||
|
|
strncmp(p, "MDL:", 4) == 0 ||
|
|
strncmp(p, "MODEL:", 6) == 0) {
|
|
q = strchr(p, ';');
|
|
if (q)
|
|
printf("%.*s", (int)(q - p + 1), p);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if defined(__FreeBSD__)
|
|
DRIVER_MODULE(ulpt, uhub, ulpt_driver, ulpt_devclass, usbd_driver_load, 0);
|
|
#endif
|