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freebsd-dev/sys/dev/usb/uscanner.c
Ed Schouten 6bfa9a2d66 Replace all calls to minor() with dev2unit(). 
After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by:	kib
2008-09-27 08:51:18 +00:00

708 lines
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/* $NetBSD: uscanner.c,v 1.30 2002/07/11 21:14:36 augustss Exp$ */
/* Also already merged from NetBSD:
* $NetBSD: uscanner.c,v 1.33 2002/09/23 05:51:24 simonb Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) at
* Carlstedt Research & Technology
* and Nick Hibma (n_hibma@qubesoft.com).
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/filio.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/selinfo.h>
#include <sys/proc.h>
#include <sys/poll.h>
#include <sys/conf.h>
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#ifdef USB_DEBUG
#define DPRINTF(x) if (uscannerdebug) printf x
#define DPRINTFN(n,x) if (uscannerdebug>(n)) printf x
int uscannerdebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, uscanner, CTLFLAG_RW, 0, "USB uscanner");
SYSCTL_INT(_hw_usb_uscanner, OID_AUTO, debug, CTLFLAG_RW,
&uscannerdebug, 0, "uscanner debug level");
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
struct uscan_info {
struct usb_devno devno;
u_int flags;
#define USC_KEEP_OPEN 1
};
/* Table of scanners that may work with this driver. */
static const struct uscan_info uscanner_devs[] = {
/* Acer Peripherals */
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_320U }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_4300U }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_640U }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_640BT }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_620U }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_1240U }, 0 },
{{ USB_VENDOR_ACERP, USB_PRODUCT_ACERP_ACERSCAN_C310U }, 0 },
/* AGFA */
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1236U }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCAN1212U2 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANTOUCH }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE40 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE50 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE20 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE25 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE26 }, 0 },
{{ USB_VENDOR_AGFA, USB_PRODUCT_AGFA_SNAPSCANE52 }, 0 },
/* Avision */
{{ USB_VENDOR_AVISION, USB_PRODUCT_AVISION_1200U }, 0 },
/* Canon */
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N656U }, 0 },
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N676U }, 0 },
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N1220U }, 0 },
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_D660U }, 0 },
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_N1240U }, 0 },
{{ USB_VENDOR_CANON, USB_PRODUCT_CANON_LIDE25 }, 0 },
/* Kye */
{{ USB_VENDOR_KYE, USB_PRODUCT_KYE_VIVIDPRO }, 0 },
/* HP */
{{ USB_VENDOR_HP, USB_PRODUCT_HP_2200C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_3300C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_3400CSE }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_4100C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_4200C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_4300C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_4670V }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_S20 }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_5200C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_5300C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_5400C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_6200C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_6300C }, 0 },
{{ USB_VENDOR_HP, USB_PRODUCT_HP_82x0C }, 0 },
/* Microtek */
{{ USB_VENDOR_SCANLOGIC, USB_PRODUCT_SCANLOGIC_336CX }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_X6U }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_336CX2 }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_C6 }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6USL2 }, 0 },
{{ USB_VENDOR_MICROTEK, USB_PRODUCT_MICROTEK_V6UL }, 0 },
/* Minolta */
{{ USB_VENDOR_MINOLTA, USB_PRODUCT_MINOLTA_5400 }, 0 },
/* Mustek */
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CU }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_BEARPAW1200F }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_BEARPAW1200TA }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600USB }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_600CU }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USB }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200UB }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200USBPLUS }, 0 },
{{ USB_VENDOR_MUSTEK, USB_PRODUCT_MUSTEK_1200CUPLUS }, 0 },
/* National */
{{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW1200 }, 0 },
{{ USB_VENDOR_NATIONAL, USB_PRODUCT_NATIONAL_BEARPAW2400 }, 0 },
/* Nikon */
{{ USB_VENDOR_NIKON, USB_PRODUCT_NIKON_LS40 }, 0 },
/* Primax */
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2X300 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E300 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2300 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E3002 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_9600 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_600U }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_6200 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_19200 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_1200U }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G600 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_636I }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2600 }, 0 },
{{ USB_VENDOR_PRIMAX, USB_PRODUCT_PRIMAX_G2E600 }, 0 },
/* Epson */
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_636 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_610 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1200 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1240 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1250 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1600 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1640 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_640U }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1650 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1660 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1670 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1260 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_1270 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_RX425 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_3200 }, USC_KEEP_OPEN },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_GT9700F }, USC_KEEP_OPEN },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_GT9300UF }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_2480 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_3500 }, USC_KEEP_OPEN },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_3590 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_4200 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_4800 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_4990 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_5000 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_6000 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_CX5400 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_DX7400 }, 0 },
{{ USB_VENDOR_EPSON, USB_PRODUCT_EPSON_DX8400 }, 0 },
/* UMAX */
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1220U }, 0 },
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA1236U }, 0 },
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2000U }, 0 },
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2100U }, 0 },
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA2200U }, 0 },
{{ USB_VENDOR_UMAX, USB_PRODUCT_UMAX_ASTRA3400 }, 0 },
/* Visioneer */
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_3000 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_5300 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_7600 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6100 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_6200 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8100 }, 0 },
{{ USB_VENDOR_VISIONEER, USB_PRODUCT_VISIONEER_8600 }, 0 },
/* Ultima */
{{ USB_VENDOR_ULTIMA, USB_PRODUCT_ULTIMA_1200UBPLUS }, 0 },
};
#define uscanner_lookup(v, p) ((const struct uscan_info *)usb_lookup(uscanner_devs, v, p))
#define USCANNER_BUFFERSIZE 1024
struct uscanner_softc {
device_t sc_dev; /* base device */
usbd_device_handle sc_udev;
usbd_interface_handle sc_iface;
struct cdev *dev;
u_int sc_dev_flags;
usbd_pipe_handle sc_bulkin_pipe;
int sc_bulkin;
usbd_xfer_handle sc_bulkin_xfer;
void *sc_bulkin_buffer;
int sc_bulkin_bufferlen;
int sc_bulkin_datalen;
usbd_pipe_handle sc_bulkout_pipe;
int sc_bulkout;
usbd_xfer_handle sc_bulkout_xfer;
void *sc_bulkout_buffer;
int sc_bulkout_bufferlen;
int sc_bulkout_datalen;
u_char sc_state;
#define USCANNER_OPEN 0x01 /* opened */
int sc_refcnt;
u_char sc_dying;
};
d_open_t uscanneropen;
d_close_t uscannerclose;
d_read_t uscannerread;
d_write_t uscannerwrite;
d_poll_t uscannerpoll;
static struct cdevsw uscanner_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_open = uscanneropen,
.d_close = uscannerclose,
.d_read = uscannerread,
.d_write = uscannerwrite,
.d_poll = uscannerpoll,
.d_name = "uscanner",
};
static int uscanner_do_read(struct uscanner_softc *, struct uio *, int);
static int uscanner_do_write(struct uscanner_softc *, struct uio *, int);
static void uscanner_do_close(struct uscanner_softc *);
#define USCANNERUNIT(n) (dev2unit(n))
static device_probe_t uscanner_match;
static device_attach_t uscanner_attach;
static device_detach_t uscanner_detach;
static device_method_t uscanner_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uscanner_match),
DEVMETHOD(device_attach, uscanner_attach),
DEVMETHOD(device_detach, uscanner_detach),
{ 0, 0 }
};
static driver_t uscanner_driver = {
"uscanner",
uscanner_methods,
sizeof(struct uscanner_softc)
};
static devclass_t uscanner_devclass;
static int
uscanner_match(device_t self)
{
struct usb_attach_arg *uaa = device_get_ivars(self);
usb_interface_descriptor_t *id;
if (uaa->iface == NULL)
return UMATCH_NONE; /* do not grab the entire device */
if (uscanner_lookup(uaa->vendor, uaa->product) == NULL)
return UMATCH_NONE; /* not in the list of known devices */
id = usbd_get_interface_descriptor(uaa->iface);
if (id == NULL)
return UMATCH_NONE;
/*
* There isn't a specific UICLASS for scanners, many vendors use
* UICLASS_VENDOR, so detecting the right interface is not so easy.
* But certainly we can exclude PRINTER and MASS - which some
* multifunction devices implement.
*/
if (id->bInterfaceClass == UICLASS_PRINTER ||
id->bInterfaceClass == UICLASS_MASS)
return UMATCH_NONE;
return UMATCH_VENDOR_PRODUCT; /* ok we found it */
}
static int
uscanner_attach(device_t self)
{
struct uscanner_softc *sc = device_get_softc(self);
struct usb_attach_arg *uaa = device_get_ivars(self);
usb_interface_descriptor_t *id = 0;
usb_endpoint_descriptor_t *ed, *ed_bulkin = NULL, *ed_bulkout = NULL;
int i;
usbd_status err;
int ifnum;
sc->sc_dev = self;
sc->sc_dev_flags = uscanner_lookup(uaa->vendor, uaa->product)->flags;
sc->sc_udev = uaa->device;
id = usbd_get_interface_descriptor(uaa->iface);
ifnum = id->bInterfaceNumber;
#if 0
/*
* This was in the original driver, but we cannot change the
* configuration of the whole device while attaching only to
* one of its interfaces. This can kill other already-attached
* driver, and/or possibly prevent this driver from attaching
* if an error occurs in set_config_no.
* If a device need setting the configuration, this must be done
* before attaching drivers to the various interfaces.
*/
err = usbd_set_config_no(uaa->device, 1, 1); /* XXX */
if (err) {
printf("%s: setting config no failed\n",
device_get_nameunit(sc->sc_dev));
return ENXIO;
}
#endif
err = usbd_device2interface_handle(sc->sc_udev, ifnum, &sc->sc_iface);
if (!err && sc->sc_iface)
id = usbd_get_interface_descriptor(sc->sc_iface);
if (err || id == 0) {
printf("%s: could not get interface descriptor, err=%d,id=%p\n",
device_get_nameunit(sc->sc_dev), err, id);
return ENXIO;
}
/* Find the two first bulk endpoints */
for (i = 0 ; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
if (ed == 0) {
printf("%s: could not read endpoint descriptor\n",
device_get_nameunit(sc->sc_dev));
return ENXIO;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
ed_bulkin = ed;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
ed_bulkout = ed;
}
if (ed_bulkin && ed_bulkout) /* found all we need */
break;
}
/* Verify that we goething sensible */
if (ed_bulkin == NULL || ed_bulkout == NULL) {
printf("%s: bulk-in and/or bulk-out endpoint not found\n",
device_get_nameunit(sc->sc_dev));
return ENXIO;
}
sc->sc_bulkin = ed_bulkin->bEndpointAddress;
sc->sc_bulkout = ed_bulkout->bEndpointAddress;
/* the main device, ctrl endpoint */
sc->dev = make_dev(&uscanner_cdevsw, device_get_unit(sc->sc_dev),
UID_ROOT, GID_OPERATOR, 0644, "%s", device_get_nameunit(sc->sc_dev));
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,sc->sc_dev);
return 0;
}
int
uscanneropen(struct cdev *dev, int flag, int mode, struct thread *p)
{
struct uscanner_softc *sc;
int unit = USCANNERUNIT(dev);
usbd_status err;
sc = devclass_get_softc(uscanner_devclass, unit);
if (sc == NULL)
return (ENXIO);
DPRINTFN(5, ("uscanneropen: flag=%d, mode=%d, unit=%d\n",
flag, mode, unit));
if (sc->sc_dying)
return (ENXIO);
if (sc->sc_state & USCANNER_OPEN)
return (EBUSY);
sc->sc_state |= USCANNER_OPEN;
sc->sc_bulkin_buffer = malloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
sc->sc_bulkout_buffer = malloc(USCANNER_BUFFERSIZE, M_USBDEV, M_WAITOK);
/* No need to check buffers for NULL since we have WAITOK */
sc->sc_bulkin_bufferlen = USCANNER_BUFFERSIZE;
sc->sc_bulkout_bufferlen = USCANNER_BUFFERSIZE;
/* We have decided on which endpoints to use, now open the pipes */
if (sc->sc_bulkin_pipe == NULL) {
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin,
USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
if (err) {
printf("%s: cannot open bulk-in pipe (addr %d)\n",
device_get_nameunit(sc->sc_dev), sc->sc_bulkin);
uscanner_do_close(sc);
return (EIO);
}
}
if (sc->sc_bulkout_pipe == NULL) {
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout,
USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
if (err) {
printf("%s: cannot open bulk-out pipe (addr %d)\n",
device_get_nameunit(sc->sc_dev), sc->sc_bulkout);
uscanner_do_close(sc);
return (EIO);
}
}
sc->sc_bulkin_xfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_bulkin_xfer == NULL) {
uscanner_do_close(sc);
return (ENOMEM);
}
sc->sc_bulkout_xfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_bulkout_xfer == NULL) {
uscanner_do_close(sc);
return (ENOMEM);
}
return (0); /* success */
}
int
uscannerclose(struct cdev *dev, int flag, int mode, struct thread *p)
{
struct uscanner_softc *sc;
sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
DPRINTFN(5, ("uscannerclose: flag=%d, mode=%d, unit=%d\n",
flag, mode, USCANNERUNIT(dev)));
#ifdef DIAGNOSTIC
if (!(sc->sc_state & USCANNER_OPEN)) {
printf("uscannerclose: not open\n");
return (EINVAL);
}
#endif
uscanner_do_close(sc);
return (0);
}
void
uscanner_do_close(struct uscanner_softc *sc)
{
if (sc->sc_bulkin_xfer) {
usbd_free_xfer(sc->sc_bulkin_xfer);
sc->sc_bulkin_xfer = NULL;
}
if (sc->sc_bulkout_xfer) {
usbd_free_xfer(sc->sc_bulkout_xfer);
sc->sc_bulkout_xfer = NULL;
}
if (!(sc->sc_dev_flags & USC_KEEP_OPEN)) {
if (sc->sc_bulkin_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkin_pipe);
usbd_close_pipe(sc->sc_bulkin_pipe);
sc->sc_bulkin_pipe = NULL;
}
if (sc->sc_bulkout_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkout_pipe);
usbd_close_pipe(sc->sc_bulkout_pipe);
sc->sc_bulkout_pipe = NULL;
}
}
if (sc->sc_bulkin_buffer) {
free(sc->sc_bulkin_buffer, M_USBDEV);
sc->sc_bulkin_buffer = NULL;
}
if (sc->sc_bulkout_buffer) {
free(sc->sc_bulkout_buffer, M_USBDEV);
sc->sc_bulkout_buffer = NULL;
}
sc->sc_state &= ~USCANNER_OPEN;
}
static int
uscanner_do_read(struct uscanner_softc *sc, struct uio *uio, int flag)
{
u_int32_t n, tn;
usbd_status err;
int error = 0;
DPRINTFN(5, ("%s: uscannerread\n", device_get_nameunit(sc->sc_dev)));
if (sc->sc_dying)
return (EIO);
while ((n = min(sc->sc_bulkin_bufferlen, uio->uio_resid)) != 0) {
DPRINTFN(1, ("uscannerread: start transfer %d bytes\n",n));
tn = n;
err = usbd_bulk_transfer(
sc->sc_bulkin_xfer, sc->sc_bulkin_pipe,
USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
sc->sc_bulkin_buffer, &tn,
"uscnrb");
if (err) {
if (err == USBD_INTERRUPTED)
error = EINTR;
else if (err == USBD_TIMEOUT)
error = ETIMEDOUT;
else
error = EIO;
break;
}
DPRINTFN(1, ("uscannerread: got %d bytes\n", tn));
error = uiomove(sc->sc_bulkin_buffer, tn, uio);
if (error || tn < n)
break;
}
return (error);
}
int
uscannerread(struct cdev *dev, struct uio *uio, int flag)
{
struct uscanner_softc *sc;
int error;
sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
sc->sc_refcnt++;
error = uscanner_do_read(sc, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(sc->sc_dev);
return (error);
}
static int
uscanner_do_write(struct uscanner_softc *sc, struct uio *uio, int flag)
{
u_int32_t n;
int error = 0;
usbd_status err;
DPRINTFN(5, ("%s: uscanner_do_write\n", device_get_nameunit(sc->sc_dev)));
if (sc->sc_dying)
return (EIO);
while ((n = min(sc->sc_bulkout_bufferlen, uio->uio_resid)) != 0) {
error = uiomove(sc->sc_bulkout_buffer, n, uio);
if (error)
break;
DPRINTFN(1, ("uscanner_do_write: transfer %d bytes\n", n));
err = usbd_bulk_transfer(
sc->sc_bulkout_xfer, sc->sc_bulkout_pipe,
0, USBD_NO_TIMEOUT,
sc->sc_bulkout_buffer, &n,
"uscnwb");
if (err) {
if (err == USBD_INTERRUPTED)
error = EINTR;
else
error = EIO;
break;
}
}
return (error);
}
int
uscannerwrite(struct cdev *dev, struct uio *uio, int flag)
{
struct uscanner_softc *sc;
int error;
sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
sc->sc_refcnt++;
error = uscanner_do_write(sc, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(sc->sc_dev);
return (error);
}
static int
uscanner_detach(device_t self)
{
struct uscanner_softc *sc = device_get_softc(self);
int s;
DPRINTF(("uscanner_detach: sc=%p\n", sc));
sc->sc_dying = 1;
sc->sc_dev_flags = 0; /* make close really close device */
/* Abort all pipes. Causes processes waiting for transfer to wake. */
if (sc->sc_bulkin_pipe != NULL)
usbd_abort_pipe(sc->sc_bulkin_pipe);
if (sc->sc_bulkout_pipe != NULL)
usbd_abort_pipe(sc->sc_bulkout_pipe);
s = splusb();
if (--sc->sc_refcnt >= 0) {
/* Wait for processes to go away. */
usb_detach_wait(sc->sc_dev);
}
splx(s);
/* destroy the device for the control endpoint */
destroy_dev(sc->dev);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
return (0);
}
int
uscannerpoll(struct cdev *dev, int events, struct thread *p)
{
struct uscanner_softc *sc;
int revents = 0;
sc = devclass_get_softc(uscanner_devclass, USCANNERUNIT(dev));
if (sc->sc_dying)
return (EIO);
/*
* We have no easy way of determining if a read will
* yield any data or a write will happen.
* Pretend they will.
*/
revents |= events &
(POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
return (revents);
}
MODULE_DEPEND(uscanner, usb, 1, 1, 1);
DRIVER_MODULE(uscanner, uhub, uscanner_driver, uscanner_devclass, usbd_driver_load, 0);
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