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NetBSD/sys/dev/usb/ulpt.c

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/* $NetBSD: ulpt.c,v 1.11 1999/01/10 11:13:36 augustss Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@carlstedt.se) at
* Carlstedt Research & Technology.
*
* 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.
*/
/*
* Printer Class spec: http://www.usb.org/developers/data/usbprn10.pdf
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
#elif defined(__FreeBSD__)
#include <sys/ioccom.h>
#include <sys/module.h>
#include <sys/bus.h>
#endif
#include <sys/uio.h>
#include <sys/conf.h>
#include <sys/syslog.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/usb_quirks.h>
#define TIMEOUT hz*16 /* wait up to 16 seconds for a ready */
#define STEP hz/4
#define LPTPRI (PZERO+8)
#define ULPT_BSIZE 1024
#ifdef USB_DEBUG
#define DPRINTF(x) if (ulptdebug) printf x
#define DPRINTFN(n,x) if (ulptdebug>(n)) printf x
int ulptdebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define UR_GET_DEVICE_ID 0
#define UR_GET_PORT_STATUS 1
#define UR_SOFT_RESET 2
#define LPS_NERR 0x08 /* printer no error */
#define LPS_SELECT 0x10 /* printer selected */
#define LPS_NOPAPER 0x20 /* printer out of paper */
#define LPS_INVERT (LPS_SELECT|LPS_NERR)
#define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NOPAPER)
struct ulpt_softc {
bdevice sc_dev;
usbd_device_handle sc_udev; /* device */
usbd_interface_handle sc_iface; /* interface */
int sc_ifaceno;
usbd_pipe_handle sc_bulkpipe; /* bulk pipe */
int sc_bulk;
u_char sc_state;
#define ULPT_OPEN 0x01 /* device is open */
#define ULPT_OBUSY 0x02 /* printer is busy doing output */
#define ULPT_INIT 0x04 /* waiting to initialize for open */
u_char sc_flags;
#define ULPT_NOPRIME 0x40 /* don't prime on open */
u_char sc_laststatus;
};
int ulptopen __P((dev_t, int, int, struct proc *));
int ulptclose __P((dev_t, int, int, struct proc *p));
int ulptwrite __P((dev_t, struct uio *uio, int));
int ulptioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
void ulpt_disco __P((void *));
int ulpt_status __P((struct ulpt_softc *));
void ulpt_reset __P((struct ulpt_softc *));
int ulpt_statusmsg __P((u_char, struct ulpt_softc *));
#define ULPTUNIT(s) (minor(s) & 0x1f)
#define ULPTFLAGS(s) (minor(s) & 0xe0)
USB_DECLARE_DRIVER(ulpt);
USB_MATCH(ulpt)
{
USB_MATCH_START(ulpt, uaa);
usb_interface_descriptor_t *id;
DPRINTFN(10,("ulpt_match\n"));
if (!uaa->iface)
return (UMATCH_NONE);
id = usbd_get_interface_descriptor(uaa->iface);
if (id &&
id->bInterfaceClass == UCLASS_PRINTER &&
id->bInterfaceSubClass == USUBCLASS_PRINTER &&
(id->bInterfaceProtocol == UPROTO_PRINTER_UNI ||
id->bInterfaceProtocol == UPROTO_PRINTER_BI))
return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
return (UMATCH_NONE);
}
USB_ATTACH(ulpt)
{
USB_ATTACH_START(ulpt, sc, uaa);
usbd_device_handle dev = uaa->device;
usbd_interface_handle iface = uaa->iface;
usb_interface_descriptor_t *id = usbd_get_interface_descriptor(iface);
#if 0
usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
usb_device_request_t req;
#endif
char devinfo[1024];
usb_endpoint_descriptor_t *ed;
usbd_status r;
DPRINTFN(10,("ulpt_attach: sc=%p\n", sc));
usbd_devinfo(dev, 0, devinfo);
USB_ATTACH_SETUP;
printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
/* Figure out which endpoint is the bulk out endpoint. */
ed = usbd_interface2endpoint_descriptor(iface, 0);
if (!ed)
goto nobulk;
if ((ed->bEndpointAddress & UE_IN) != UE_OUT ||
(ed->bmAttributes & UE_XFERTYPE) != UE_BULK) {
/* In case we are using a bidir protocol... */
ed = usbd_interface2endpoint_descriptor(iface, 1);
if (!ed)
goto nobulk;
if ((ed->bEndpointAddress & UE_IN) != UE_OUT ||
(ed->bmAttributes & UE_XFERTYPE) != UE_BULK)
goto nobulk;
}
sc->sc_bulk = ed->bEndpointAddress;
DPRINTFN(10, ("ulpt_attach: bulk=%d\n", sc->sc_bulk));
sc->sc_iface = iface;
r = usbd_interface2device_handle(iface, &sc->sc_udev);
if (r != USBD_NORMAL_COMPLETION)
USB_ATTACH_ERROR_RETURN;
sc->sc_ifaceno = id->bInterfaceNumber;
#if 0
XXX needs a different way to read the id string since the length
is unknown. usbd_do_request() returns error on a short transfer.
req.bmRequestType = UT_READ_CLASS_INTERFACE;
req.bRequest = UR_GET_DEVICE_ID;
USETW(req.wValue, cd->bConfigurationValue);
USETW2(req.wIndex, id->bInterfaceNumber, id->bAlternateSetting);
USETW(req.wLength, sizeof devinfo - 1);
r = usbd_do_request(dev, &req, devinfo);
if (r == USBD_NORMAL_COMPLETION) {
int len;
char *idstr;
len = (devinfo[0] << 8) | (devinfo[1] & 0xff);
/* devinfo now contains an IEEE-1284 device ID */
idstr = devinfo+2;
idstr[len] = 0;
printf("%s: device id <%s>\n", USBDEVNAME(sc->sc_dev), idstr);
} else {
printf("%s: cannot get device id\n", USBDEVNAME(sc->sc_dev));
}
#endif
USB_ATTACH_SUCCESS_RETURN;
nobulk:
printf("%s: could not find bulk endpoint\n", USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
int
ulpt_status(sc)
struct ulpt_softc *sc;
{
usb_device_request_t req;
usbd_status r;
u_char status;
req.bmRequestType = UT_READ_CLASS_INTERFACE;
req.bRequest = UR_GET_PORT_STATUS;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifaceno);
USETW(req.wLength, 1);
r = usbd_do_request(sc->sc_udev, &req, &status);
DPRINTFN(1, ("ulpt_status: status=0x%02x r=%d\n", status, r));
if (r == USBD_NORMAL_COMPLETION)
return (status);
else
return (0);
}
void
ulpt_reset(sc)
struct ulpt_softc *sc;
{
usb_device_request_t req;
DPRINTFN(1, ("ulpt_reset\n"));
req.bmRequestType = UT_WRITE_CLASS_OTHER;
req.bRequest = UR_SOFT_RESET;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifaceno);
USETW(req.wLength, 0);
(void)usbd_do_request(sc->sc_udev, &req, 0);
}
/*
* Reset the printer, then wait until it's selected and not busy.
*/
int
ulptopen(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
u_char flags = ULPTFLAGS(dev);
usbd_status r;
int spin, error;
USB_GET_SC_OPEN(ulpt, ULPTUNIT(dev), sc);
if (!sc || !sc->sc_iface)
return ENXIO;
if (sc->sc_state)
return EBUSY;
sc->sc_state = ULPT_INIT;
sc->sc_flags = flags;
DPRINTF(("ulptopen: flags=0x%x\n", (unsigned)flags));
if ((flags & ULPT_NOPRIME) == 0)
ulpt_reset(sc);
for (spin = 0; (ulpt_status(sc) & LPS_SELECT) == 0; spin += STEP) {
if (spin >= TIMEOUT) {
sc->sc_state = 0;
return EBUSY;
}
/* wait 1/4 second, give up if we get a signal */
error = tsleep((caddr_t)sc, LPTPRI | PCATCH, "ulptop", STEP);
if (error != EWOULDBLOCK) {
sc->sc_state = 0;
return error;
}
}
r = usbd_open_pipe(sc->sc_iface, sc->sc_bulk, 0, &sc->sc_bulkpipe);
if (r != USBD_NORMAL_COMPLETION) {
sc->sc_state = 0;
return (EIO);
}
sc->sc_state = ULPT_OPEN;
DPRINTF(("ulptopen: done\n"));
return (0);
}
int
ulpt_statusmsg(status, sc)
u_char status;
struct ulpt_softc *sc;
{
u_char new;
status = (status ^ LPS_INVERT) & LPS_MASK;
new = status & ~sc->sc_laststatus;
sc->sc_laststatus = status;
if (new & LPS_SELECT)
log(LOG_NOTICE, "%s: offline\n", USBDEVNAME(sc->sc_dev));
else if (new & LPS_NOPAPER)
log(LOG_NOTICE, "%s: out of paper\n", USBDEVNAME(sc->sc_dev));
else if (new & LPS_NERR)
log(LOG_NOTICE, "%s: output error\n", USBDEVNAME(sc->sc_dev));
return status;
}
int
ulptclose(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
usbd_close_pipe(sc->sc_bulkpipe);
sc->sc_state = 0;
DPRINTF(("ulptclose: closed\n"));
return (0);
}
int
ulptwrite(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
size_t n;
int error = 0;
char buf[ULPT_BSIZE];
usbd_request_handle reqh;
usbd_status r;
USB_GET_SC(ulpt, ULPTUNIT(dev), sc);
DPRINTF(("ulptwrite\n"));
reqh = usbd_alloc_request();
if (reqh == 0)
return (ENOMEM);
while ((n = min(ULPT_BSIZE, uio->uio_resid)) != 0) {
ulpt_statusmsg(ulpt_status(sc), sc);
error = uiomove(buf, n, uio);
if (error)
break;
/* XXX use callback to enable interrupt? */
r = usbd_setup_request(reqh, sc->sc_bulkpipe, 0, buf, n,
0, USBD_NO_TIMEOUT, 0);
if (r != USBD_NORMAL_COMPLETION) {
error = EIO;
break;
}
DPRINTFN(1, ("ulptwrite: transfer %d bytes\n", n));
r = usbd_sync_transfer(reqh);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTF(("ulptwrite: error=%d\n", r));
usbd_clear_endpoint_stall(sc->sc_bulkpipe);
error = EIO;
break;
}
}
usbd_free_request(reqh);
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 defined(__FreeBSD__)
static int
ulpt_detach(device_t self)
{
struct ulpt_softc *sc = device_get_softc(self);
char *devinfo = (char *) device_get_desc(self);
if (devinfo) {
device_set_desc(self, NULL);
free(devinfo, M_USB);
}
return 0;
}
DRIVER_MODULE(ulpt, usb, ulpt_driver, ulpt_devclass, usbd_driver_load, 0);
#endif
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