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00b5244e28
freebsd/sys/dev/usb/ugen.c
Brian Feldman 00b5244e28 Further modify bulk endpoint behavior to be able to tear down the 
current transfer fully in the "purge" routine, and to actually finish
kicking out any read()s in progress.
2004-10-12 04:02:06 +00:00

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/* $NetBSD: ugen.c,v 1.59 2002/07/11 21:14:28 augustss Exp $ */
/* Also already merged from NetBSD:
* $NetBSD: ugen.c,v 1.61 2002/09/23 05:51:20 simonb Exp $
* $NetBSD: ugen.c,v 1.64 2003/06/28 14:21:46 darrenr Exp $
* $NetBSD: ugen.c,v 1.65 2003/06/29 22:30:56 fvdl Exp $
* $NetBSD: ugen.c,v 1.68 2004/06/23 02:30:52 mycroft Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Copyright (c) 1998 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.
*
* 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>
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
#elif defined(__FreeBSD__)
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/filio.h>
#endif
#include <sys/tty.h>
#include <sys/file.h>
#if __FreeBSD_version >= 500014
#include <sys/selinfo.h>
#else
#include <sys/select.h>
#endif
#include <sys/vnode.h>
#include <sys/poll.h>
#include <sys/sysctl.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#ifdef USB_DEBUG
#define DPRINTF(x) if (ugendebug) logprintf x
#define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x
int ugendebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB ugen");
SYSCTL_INT(_hw_usb_ugen, OID_AUTO, debug, CTLFLAG_RW,
&ugendebug, 0, "ugen debug level");
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define UGEN_CHUNK 128 /* chunk size for read */
#define UGEN_IBSIZE 1020 /* buffer size */
#define UGEN_BBSIZE 1024
#define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */
#define UGEN_NISOREQS 6 /* number of outstanding xfer requests */
#define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */
struct ugen_endpoint {
struct ugen_softc *sc;
#if defined(__FreeBSD__)
struct cdev *dev;
#endif
usb_endpoint_descriptor_t *edesc;
usbd_interface_handle iface;
int state;
#define UGEN_ASLP 0x02 /* waiting for data */
#define UGEN_SHORT_OK 0x04 /* short xfers are OK */
usbd_pipe_handle pipeh;
struct clist q;
struct selinfo rsel;
u_char *ibuf; /* start of buffer (circular for isoc) */
u_char *fill; /* location for input (isoc) */
u_char *limit; /* end of circular buffer (isoc) */
u_char *cur; /* current read location (isoc) */
u_int32_t timeout;
struct isoreq {
struct ugen_endpoint *sce;
usbd_xfer_handle xfer;
void *dmabuf;
u_int16_t sizes[UGEN_NISORFRMS];
} isoreqs[UGEN_NISOREQS];
struct {
usbd_xfer_handle xfer;
int err;
int len;
int maxlen;
void *buf;
int datardy;
} bulkreq;
};
struct ugen_softc {
USBBASEDEVICE sc_dev; /* base device */
usbd_device_handle sc_udev;
#if defined(__FreeBSD__)
struct cdev *dev;
#endif
char sc_is_open[USB_MAX_ENDPOINTS];
struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
#define OUT 0
#define IN 1
#ifdef __FreeBSD__
#define UGEN_DEV_REF(dev, sc) \
if ((sc)->sc_dying || dev_refthread(dev) == NULL) \
return (ENXIO)
#define UGEN_DEV_RELE(dev, sc) \
dev_relthread(dev)
#define UGEN_DEV_OPEN(dev, sc) \
/* handled by dev layer */
#define UGEN_DEV_CLOSE(dev, sc) \
/* handled by dev layer */
#else
int sc_refcnt;
#define UGEN_DEV_REF(dev, sc) \
if ((sc)->sc_dying) \
return (ENXIO); \
(sc)->sc_refcnt++
#define UGEN_DEV_RELE(dev, sc) \
if (--(sc)->sc_refcnt < 0) \
usb_detach_wakeup(USBDEV((sc)->sc_dev))
#define UGEN_DEV_OPEN(dev, sc) \
(sc)->sc_refcnt++
#define UGEN_DEV_CLOSE(dev, sc) \
UGEN_DEV_RELE(dev, sc)
#endif
u_char sc_dying;
};
#if defined(__NetBSD__) || defined(__OpenBSD__)
cdev_decl(ugen);
#elif defined(__FreeBSD__)
d_open_t ugenopen;
d_close_t ugenclose;
d_read_t ugenread;
d_write_t ugenwrite;
d_ioctl_t ugenioctl;
d_poll_t ugenpoll;
d_purge_t ugenpurge;
Static struct cdevsw ugenctl_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_open = ugenopen,
.d_close = ugenclose,
.d_ioctl = ugenioctl,
.d_purge = ugenpurge,
.d_name = "ugenctl",
#if __FreeBSD_version < 500014
.d_bmaj -1
#endif
};
Static struct cdevsw ugen_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_open = ugenopen,
.d_close = ugenclose,
.d_read = ugenread,
.d_write = ugenwrite,
.d_ioctl = ugenioctl,
.d_poll = ugenpoll,
.d_purge = ugenpurge,
.d_name = "ugen",
#if __FreeBSD_version < 500014
.d_bmaj -1
#endif
};
#endif
Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
usbd_status status);
Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
usbd_status status);
Static void ugen_rdcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
Static int ugen_do_ioctl(struct ugen_softc *, int, u_long,
caddr_t, int, usb_proc_ptr);
#if defined(__FreeBSD__)
Static void ugen_make_devnodes(struct ugen_softc *sc);
Static void ugen_destroy_devnodes(struct ugen_softc *sc);
#endif
Static int ugen_set_config(struct ugen_softc *sc, int configno);
Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
int index, int *lenp);
Static usbd_status ugen_set_interface(struct ugen_softc *, int, int);
Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
#define UGENUNIT(n) ((minor(n) >> 4) & 0xf)
#define UGENENDPOINT(n) (minor(n) & 0xf)
#define UGENMINOR(u, e) (((u) << 4) | (e))
USB_DECLARE_DRIVER(ugen);
USB_MATCH(ugen)
{
USB_MATCH_START(ugen, uaa);
#if 0
if (uaa->matchlvl)
return (uaa->matchlvl);
#endif
if (uaa->usegeneric)
return (UMATCH_GENERIC);
else
return (UMATCH_NONE);
}
USB_ATTACH(ugen)
{
USB_ATTACH_START(ugen, sc, uaa);
usbd_device_handle udev;
char devinfo[1024];
usbd_status err;
int conf;
usbd_devinfo(uaa->device, 0, devinfo);
USB_ATTACH_SETUP;
sc->sc_udev = udev = uaa->device;
memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
/* First set configuration index 0, the default one for ugen. */
err = usbd_set_config_index(udev, 0, 0);
if (err) {
printf("%s: setting configuration index 0 failed\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
/* Set up all the local state for this configuration. */
err = ugen_set_config(sc, conf);
if (err) {
printf("%s: setting configuration %d failed\n",
USBDEVNAME(sc->sc_dev), conf);
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
#if defined(__FreeBSD__)
/* the main device, ctrl endpoint */
sc->dev = make_dev(&ugenctl_cdevsw,
UGENMINOR(USBDEVUNIT(sc->sc_dev), 0), UID_ROOT, GID_OPERATOR, 0644,
"%s", USBDEVNAME(sc->sc_dev));
ugen_make_devnodes(sc);
#endif
USB_ATTACH_SUCCESS_RETURN;
}
#if defined(__FreeBSD__)
Static void
ugen_make_devnodes(struct ugen_softc *sc)
{
int endptno;
struct cdev *dev;
for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
if (sc->sc_endpoints[endptno][IN].sc != NULL ||
sc->sc_endpoints[endptno][OUT].sc != NULL ) {
/* endpt can be 0x81 and 0x01, representing
* endpoint address 0x01 and IN/OUT directions.
* We map both endpts to the same device,
* IN is reading from it, OUT is writing to it.
*
* In the if clause above we check whether one
* of the structs is populated.
*/
dev = make_dev(&ugen_cdevsw,
UGENMINOR(USBDEVUNIT(sc->sc_dev), endptno),
UID_ROOT, GID_OPERATOR, 0644,
"%s.%d",
USBDEVNAME(sc->sc_dev), endptno);
dev_depends(sc->dev, dev);
if (sc->sc_endpoints[endptno][IN].sc != NULL)
sc->sc_endpoints[endptno][IN].dev = dev;
if (sc->sc_endpoints[endptno][OUT].sc != NULL)
sc->sc_endpoints[endptno][OUT].dev = dev;
}
}
}
Static void
ugen_destroy_devnodes(struct ugen_softc *sc)
{
int endptno;
struct cdev *dev;
/* destroy all devices for the other (existing) endpoints as well */
for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
if (sc->sc_endpoints[endptno][IN].sc != NULL ||
sc->sc_endpoints[endptno][OUT].sc != NULL ) {
/* endpt can be 0x81 and 0x01, representing
* endpoint address 0x01 and IN/OUT directions.
* We map both endpoint addresses to the same device,
* IN is reading from it, OUT is writing to it.
*
* In the if clause above we check whether one
* of the structs is populated.
*/
if (sc->sc_endpoints[endptno][IN].sc != NULL)
dev = sc->sc_endpoints[endptno][IN].dev;
else
dev = sc->sc_endpoints[endptno][OUT].dev;
destroy_dev(dev);
}
}
}
#endif
Static int
ugen_set_config(struct ugen_softc *sc, int configno)
{
usbd_device_handle dev = sc->sc_udev;
usbd_interface_handle iface;
usb_endpoint_descriptor_t *ed;
struct ugen_endpoint *sce;
u_int8_t niface, nendpt;
int ifaceno, endptno, endpt;
usbd_status err;
int dir;
DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
USBDEVNAME(sc->sc_dev), configno, sc));
/* We start at 1, not 0, because we don't care whether the
* control endpoint is open or not. It is always present.
*/
for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++)
if (sc->sc_is_open[endptno]) {
DPRINTFN(1,
("ugen_set_config: %s - endpoint %d is open\n",
USBDEVNAME(sc->sc_dev), endptno));
return (USBD_IN_USE);
}
/* Avoid setting the current value. */
if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
err = usbd_set_config_no(dev, configno, 1);
if (err)
return (err);
}
err = usbd_interface_count(dev, &niface);
if (err)
return (err);
memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
for (ifaceno = 0; ifaceno < niface; ifaceno++) {
DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
err = usbd_device2interface_handle(dev, ifaceno, &iface);
if (err)
return (err);
err = usbd_endpoint_count(iface, &nendpt);
if (err)
return (err);
for (endptno = 0; endptno < nendpt; endptno++) {
ed = usbd_interface2endpoint_descriptor(iface,endptno);
endpt = ed->bEndpointAddress;
dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
"(%d,%d), sce=%p\n",
endptno, endpt, UE_GET_ADDR(endpt),
UE_GET_DIR(endpt), sce));
sce->sc = sc;
sce->edesc = ed;
sce->iface = iface;
}
}
return (USBD_NORMAL_COMPLETION);
}
int
ugenopen(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
{
struct ugen_softc *sc;
int unit = UGENUNIT(dev);
int endpt = UGENENDPOINT(dev);
usb_endpoint_descriptor_t *edesc;
struct ugen_endpoint *sce;
int dir, isize;
usbd_status err;
usbd_xfer_handle xfer;
void *buf;
int i, j;
USB_GET_SC_OPEN(ugen, unit, sc);
DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
flag, mode, unit, endpt));
if (sc == NULL || sc->sc_dying)
return (ENXIO);
if (sc->sc_is_open[endpt])
return (EBUSY);
if (endpt == USB_CONTROL_ENDPOINT) {
sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
UGEN_DEV_OPEN(dev, sc);
return (0);
}
/* Make sure there are pipes for all directions. */
for (dir = OUT; dir <= IN; dir++) {
if (flag & (dir == OUT ? FWRITE : FREAD)) {
sce = &sc->sc_endpoints[endpt][dir];
if (sce->edesc == 0)
return (ENXIO);
}
}
/* Actually open the pipes. */
/* XXX Should back out properly if it fails. */
for (dir = OUT; dir <= IN; dir++) {
if (!(flag & (dir == OUT ? FWRITE : FREAD)))
continue;
sce = &sc->sc_endpoints[endpt][dir];
sce->state = 0;
sce->timeout = USBD_NO_TIMEOUT;
DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
sc, endpt, dir, sce));
edesc = sce->edesc;
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
if (dir == OUT) {
err = usbd_open_pipe(sce->iface,
edesc->bEndpointAddress, 0, &sce->pipeh);
if (err)
return (EIO);
break;
}
isize = UGETW(edesc->wMaxPacketSize);
if (isize == 0) /* shouldn't happen */
return (EINVAL);
sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK);
DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
endpt, isize));
if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1)
return (ENOMEM);
err = usbd_open_pipe_intr(sce->iface,
edesc->bEndpointAddress,
USBD_SHORT_XFER_OK, &sce->pipeh, sce,
sce->ibuf, isize, ugenintr,
USBD_DEFAULT_INTERVAL);
if (err) {
free(sce->ibuf, M_USBDEV);
clfree(&sce->q);
return (EIO);
}
DPRINTFN(5, ("ugenopen: interrupt open done\n"));
break;
case UE_BULK:
err = usbd_open_pipe(sce->iface,
edesc->bEndpointAddress, 0, &sce->pipeh);
if (err)
return (EIO);
if (dir == OUT)
break;
/* If this is the read pipe, set up an async xfer. */
isize = UGETW(edesc->wMaxPacketSize);
if (isize == 0) /* shouldn't happen */
return (EINVAL);
sce->bulkreq.buf = malloc(isize, M_USBDEV, M_WAITOK);
DPRINTFN(5, ("ugenopen: bulk endpt=%d,isize=%d\n",
endpt, isize));
sce->bulkreq.xfer = usbd_alloc_xfer(sc->sc_udev);
if (sce->bulkreq.xfer == 0) {
free(sce->bulkreq.buf, M_USBDEV);
return (ENOMEM);
}
sce->bulkreq.maxlen = isize;
sce->bulkreq.err = 0;
sce->bulkreq.datardy = 0;
usbd_setup_xfer(sce->bulkreq.xfer, sce->pipeh, sce,
sce->bulkreq.buf, sce->bulkreq.maxlen,
sce->state & UGEN_SHORT_OK ?
USBD_SHORT_XFER_OK : 0, sce->timeout,
ugen_rdcb);
usbd_transfer(sce->bulkreq.xfer);
break;
case UE_ISOCHRONOUS:
if (dir == OUT)
return (EINVAL);
isize = UGETW(edesc->wMaxPacketSize);
if (isize == 0) /* shouldn't happen */
return (EINVAL);
sce->ibuf = malloc(isize * UGEN_NISOFRAMES,
M_USBDEV, M_WAITOK);
sce->cur = sce->fill = sce->ibuf;
sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
endpt, isize));
err = usbd_open_pipe(sce->iface,
edesc->bEndpointAddress, 0, &sce->pipeh);
if (err) {
free(sce->ibuf, M_USBDEV);
return (EIO);
}
for(i = 0; i < UGEN_NISOREQS; ++i) {
sce->isoreqs[i].sce = sce;
xfer = usbd_alloc_xfer(sc->sc_udev);
if (xfer == 0)
goto bad;
sce->isoreqs[i].xfer = xfer;
buf = usbd_alloc_buffer
(xfer, isize * UGEN_NISORFRMS);
if (buf == 0) {
i++;
goto bad;
}
sce->isoreqs[i].dmabuf = buf;
for(j = 0; j < UGEN_NISORFRMS; ++j)
sce->isoreqs[i].sizes[j] = isize;
usbd_setup_isoc_xfer
(xfer, sce->pipeh, &sce->isoreqs[i],
sce->isoreqs[i].sizes,
UGEN_NISORFRMS, USBD_NO_COPY,
ugen_isoc_rintr);
(void)usbd_transfer(xfer);
}
DPRINTFN(5, ("ugenopen: isoc open done\n"));
break;
bad:
while (--i >= 0) /* implicit buffer free */
usbd_free_xfer(sce->isoreqs[i].xfer);
return (ENOMEM);
case UE_CONTROL:
sce->timeout = USBD_DEFAULT_TIMEOUT;
return (EINVAL);
}
}
sc->sc_is_open[endpt] = 1;
UGEN_DEV_OPEN(dev, sc);
return (0);
}
int
ugenclose(struct cdev *dev, int flag, int mode, usb_proc_ptr p)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
struct ugen_endpoint *sce;
int dir;
int i;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
flag, mode, UGENUNIT(dev), endpt));
#if defined(__NetBSD__) || defined(__OpenBSD__)
if (sc->sc_dying)
wakeup(&sc->sc_dying);
#endif
#ifdef DIAGNOSTIC
if (!sc->sc_is_open[endpt]) {
printf("ugenclose: not open\n");
return (EINVAL);
}
#endif
if (endpt == USB_CONTROL_ENDPOINT) {
DPRINTFN(5, ("ugenclose: close control\n"));
sc->sc_is_open[endpt] = 0;
UGEN_DEV_CLOSE(dev, sc);
return (0);
}
for (dir = OUT; dir <= IN; dir++) {
if (!(flag & (dir == OUT ? FWRITE : FREAD)))
continue;
sce = &sc->sc_endpoints[endpt][dir];
if (sce->pipeh == NULL)
continue;
DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
endpt, dir, sce));
usbd_abort_pipe(sce->pipeh);
usbd_close_pipe(sce->pipeh);
sce->pipeh = NULL;
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
ndflush(&sce->q, sce->q.c_cc);
clfree(&sce->q);
break;
case UE_ISOCHRONOUS:
for (i = 0; i < UGEN_NISOREQS; ++i)
usbd_free_xfer(sce->isoreqs[i].xfer);
default:
break;
}
if (sce->ibuf != NULL) {
free(sce->ibuf, M_USBDEV);
sce->ibuf = NULL;
clfree(&sce->q);
}
if (sce->bulkreq.buf != NULL)
free(sce->bulkreq.buf, M_USBDEV);
if (sce->bulkreq.xfer != NULL) {
ugen_rdcb(sce->bulkreq.xfer, sce, USBD_INTERRUPTED);
usbd_free_xfer(sce->bulkreq.xfer);
sce->bulkreq.xfer = NULL;
}
}
sc->sc_is_open[endpt] = 0;
UGEN_DEV_CLOSE(dev, sc);
return (0);
}
Static void
ugen_rdcb(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct ugen_endpoint *sce;
sce = priv;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_INTERRUPTED)
sce->bulkreq.err = EINTR;
else if (status == USBD_TIMEOUT)
sce->bulkreq.err = ETIMEDOUT;
else
sce->bulkreq.err = EIO;
} else {
sce->bulkreq.err = 0;
sce->bulkreq.datardy = 1;
usbd_get_xfer_status(xfer, NULL, NULL,
&sce->bulkreq.len, NULL);
}
if (sce->state & UGEN_ASLP) {
sce->state &= ~UGEN_ASLP;
wakeup(sce);
}
selwakeuppri(&sce->rsel, PZERO);
return;
}
Static int
ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
{
struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
u_int32_t n, tn;
int isize;
usbd_status err;
int s;
int error = 0;
u_char buffer[UGEN_CHUNK];
DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt));
if (sc->sc_dying)
return (EIO);
if (endpt == USB_CONTROL_ENDPOINT)
return (ENODEV);
if (sce->edesc == NULL) {
printf("ugenread: no edesc\n");
return (EIO);
}
if (sce->pipeh == NULL) {
printf("ugenread: no pipe\n");
return (EIO);
}
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
/* Block until activity occurred. */
s = splusb();
while (sce->q.c_cc == 0) {
if (flag & IO_NDELAY) {
splx(s);
return (EWOULDBLOCK);
}
sce->state |= UGEN_ASLP;
DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
error = tsleep(sce, PZERO | PCATCH, "ugenri", 0);
DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
if (sc->sc_dying)
error = EIO;
if (error) {
sce->state &= ~UGEN_ASLP;
break;
}
}
splx(s);
/* Transfer as many chunks as possible. */
while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
n = min(sce->q.c_cc, uio->uio_resid);
if (n > sizeof(buffer))
n = sizeof(buffer);
/* Remove a small chunk from the input queue. */
q_to_b(&sce->q, buffer, n);
DPRINTFN(5, ("ugenread: got %d chars\n", n));
/* Copy the data to the user process. */
error = uiomove(buffer, n, uio);
if (error)
break;
}
break;
case UE_BULK:
isize = UGETW(sce->edesc->wMaxPacketSize);
while ((n = min(isize, uio->uio_resid)) != 0) {
DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
tn = n;
/* Wait for data to be ready. */
while (sce->bulkreq.datardy == 0) {
sce->state |= UGEN_ASLP;
error = tsleep(sce, PCATCH | PZERO,
"ugenrd", 0);
if (sce->bulkreq.err || error) {
sce->state &= ~UGEN_ASLP;
break;
}
}
err = sce->bulkreq.err;
if (err == EIO) {
error = ENXIO;
break;
}
tn = sce->bulkreq.len;
error = uiomove(sce->bulkreq.buf, tn, uio);
/* Set up a new transfer. */
sce->bulkreq.datardy = 0;
usbd_setup_xfer(sce->bulkreq.xfer, sce->pipeh, sce,
sce->bulkreq.buf, sce->bulkreq.maxlen,
sce->state & UGEN_SHORT_OK ?
USBD_SHORT_XFER_OK : 0, sce->timeout, ugen_rdcb);
usbd_transfer(sce->bulkreq.xfer);
if (err)
break;
DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
if (error || tn < n)
break;
}
break;
case UE_ISOCHRONOUS:
s = splusb();
while (sce->cur == sce->fill) {
if (flag & IO_NDELAY) {
splx(s);
return (EWOULDBLOCK);
}
sce->state |= UGEN_ASLP;
DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
error = tsleep(sce, PZERO | PCATCH, "ugenri", 0);
DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
if (sc->sc_dying)
error = EIO;
if (error) {
sce->state &= ~UGEN_ASLP;
break;
}
}
while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
if(sce->fill > sce->cur)
n = min(sce->fill - sce->cur, uio->uio_resid);
else
n = min(sce->limit - sce->cur, uio->uio_resid);
DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
/* Copy the data to the user process. */
error = uiomove(sce->cur, n, uio);
if (error)
break;
sce->cur += n;
if(sce->cur >= sce->limit)
sce->cur = sce->ibuf;
}
splx(s);
break;
default:
return (ENXIO);
}
return (error);
}
int
ugenread(struct cdev *dev, struct uio *uio, int flag)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
UGEN_DEV_REF(dev, sc);
error = ugen_do_read(sc, endpt, uio, flag);
UGEN_DEV_RELE(dev, sc);
return (error);
}
Static int
ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
{
struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
u_int32_t n;
int error = 0;
char buf[UGEN_BBSIZE];
usbd_xfer_handle xfer;
usbd_status err;
DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt));
if (sc->sc_dying)
return (EIO);
if (endpt == USB_CONTROL_ENDPOINT)
return (ENODEV);
if (sce->edesc == NULL) {
printf("ugenwrite: no edesc\n");
return (EIO);
}
if (sce->pipeh == NULL) {
printf("ugenwrite: no pipe\n");
return (EIO);
}
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_BULK:
xfer = usbd_alloc_xfer(sc->sc_udev);
if (xfer == 0)
return (EIO);
while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) {
error = uiomove(buf, n, uio);
if (error)
break;
DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
sce->timeout, buf, &n,"ugenwb");
if (err) {
if (err == USBD_INTERRUPTED)
error = EINTR;
else if (err == USBD_TIMEOUT)
error = ETIMEDOUT;
else
error = EIO;
break;
}
}
usbd_free_xfer(xfer);
break;
case UE_INTERRUPT:
xfer = usbd_alloc_xfer(sc->sc_udev);
if (xfer == 0)
return (EIO);
while ((n = min(UGETW(sce->edesc->wMaxPacketSize),
uio->uio_resid)) != 0) {
error = uiomove(buf, n, uio);
if (error)
break;
DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
err = usbd_intr_transfer(xfer, sce->pipeh, 0,
sce->timeout, buf, &n,"ugenwi");
if (err) {
if (err == USBD_INTERRUPTED)
error = EINTR;
else if (err == USBD_TIMEOUT)
error = ETIMEDOUT;
else
error = EIO;
break;
}
}
usbd_free_xfer(xfer);
break;
default:
return (ENXIO);
}
return (error);
}
int
ugenwrite(struct cdev *dev, struct uio *uio, int flag)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
UGEN_DEV_REF(dev, sc);
error = ugen_do_write(sc, endpt, uio, flag);
UGEN_DEV_RELE(dev, sc);
return (error);
}
#if defined(__NetBSD__) || defined(__OpenBSD__)
int
ugen_activate(device_ptr_t self, enum devact act)
{
struct ugen_softc *sc = (struct ugen_softc *)self;
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
break;
}
return (0);
}
#endif
#ifdef __FreeBSD__
void
ugenpurge(struct cdev *dev)
{
int endpt = UGENENDPOINT(dev);
struct ugen_endpoint *sce;
struct ugen_softc *sc;
if (endpt == USB_CONTROL_ENDPOINT)
return;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
sce = &sc->sc_endpoints[endpt][IN];
if (sce->pipeh)
usbd_abort_pipe(sce->pipeh);
/* cancel async bulk transfer */
if (sce->bulkreq.xfer != NULL) {
ugen_rdcb(sce->bulkreq.xfer, sce, USBD_IOERROR);
usbd_free_xfer(sce->bulkreq.xfer);
sce->bulkreq.xfer = NULL;
}
}
#endif
USB_DETACH(ugen)
{
USB_DETACH_START(ugen, sc);
struct ugen_endpoint *sce;
int i, dir;
#if defined(__NetBSD__) || defined(__OpenBSD__)
int maj, mn, c, s;
#endif
#if defined(__NetBSD__) || defined(__OpenBSD__)
DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags));
#elif defined(__FreeBSD__)
DPRINTF(("ugen_detach: sc=%p\n", sc));
#endif
sc->sc_dying = 1;
/* Abort all pipes. Causes processes waiting for transfer to wake. */
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
for (dir = OUT; dir <= IN; dir++) {
sce = &sc->sc_endpoints[i][dir];
if (sce->pipeh)
usbd_abort_pipe(sce->pipeh);
/* cancel async bulk transfer */
if (sce->bulkreq.xfer != NULL)
ugen_rdcb(sce->bulkreq.xfer,
sce, USBD_IOERROR);
}
}
#if defined(__NetBSD__) || defined(__OpenBSD__)
s = splusb();
if (sc->sc_refcnt > 0) {
/* Wake everyone */
for (i = 0; i < USB_MAX_ENDPOINTS; i++)
wakeup(&sc->sc_endpoints[i][IN]);
/* Wait for processes to go away. */
while (sc->sc_refcnt > 0)
usb_detach_wait(USBDEV(sc->sc_dev));
}
splx(s);
/* Wait for opens to go away. */
do {
c = 0;
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
if (sc->sc_is_open[i])
c++;
}
if (c != 0)
tsleep(&sc->sc_dying, PZERO, "ugendr", hz);
} while (c != 0);
/* locate the major number */
for (maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == ugenopen)
break;
/* Nuke the vnodes for any open instances (calls close). */
mn = self->dv_unit * USB_MAX_ENDPOINTS;
vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR);
#elif defined(__FreeBSD__)
/* destroy the device for the control endpoint */
destroy_dev(sc->dev);
#endif
return (0);
}
Static void
ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
{
struct ugen_endpoint *sce = addr;
/*struct ugen_softc *sc = sce->sc;*/
u_int32_t count;
u_char *ibuf;
if (status == USBD_CANCELLED)
return;
if (status != USBD_NORMAL_COMPLETION) {
DPRINTF(("ugenintr: status=%d\n", status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sce->pipeh);
return;
}
usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
ibuf = sce->ibuf;
DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
xfer, status, count));
DPRINTFN(5, (" data = %02x %02x %02x\n",
ibuf[0], ibuf[1], ibuf[2]));
(void)b_to_q(ibuf, count, &sce->q);
if (sce->state & UGEN_ASLP) {
sce->state &= ~UGEN_ASLP;
DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
wakeup(sce);
}
selwakeuppri(&sce->rsel, PZERO);
}
Static void
ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
usbd_status status)
{
struct isoreq *req = addr;
struct ugen_endpoint *sce = req->sce;
u_int32_t count, n;
int i, isize;
/* Return if we are aborting. */
if (status == USBD_CANCELLED)
return;
usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n",
(int)(req - sce->isoreqs),
count));
/* throw away oldest input if the buffer is full */
if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
sce->cur += count;
if(sce->cur >= sce->limit)
sce->cur = sce->ibuf + (sce->cur - sce->limit);
DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
count));
}
isize = UGETW(sce->edesc->wMaxPacketSize);
for (i = 0; i < UGEN_NISORFRMS; i++) {
u_int32_t actlen = req->sizes[i];
char const *buf = (char const *)req->dmabuf + isize * i;
/* copy data to buffer */
while (actlen > 0) {
n = min(actlen, sce->limit - sce->fill);
memcpy(sce->fill, buf, n);
buf += n;
actlen -= n;
sce->fill += n;
if(sce->fill == sce->limit)
sce->fill = sce->ibuf;
}
/* setup size for next transfer */
req->sizes[i] = isize;
}
usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
USBD_NO_COPY, ugen_isoc_rintr);
(void)usbd_transfer(xfer);
if (sce->state & UGEN_ASLP) {
sce->state &= ~UGEN_ASLP;
DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
wakeup(sce);
}
selwakeuppri(&sce->rsel, PZERO);
}
Static usbd_status
ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
{
usbd_interface_handle iface;
usb_endpoint_descriptor_t *ed;
usbd_status err;
struct ugen_endpoint *sce;
u_int8_t niface, nendpt, endptno, endpt;
int dir;
DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
err = usbd_interface_count(sc->sc_udev, &niface);
if (err)
return (err);
if (ifaceidx < 0 || ifaceidx >= niface)
return (USBD_INVAL);
err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
if (err)
return (err);
err = usbd_endpoint_count(iface, &nendpt);
if (err)
return (err);
#if defined(__FreeBSD__)
/* destroy the existing devices, we remake the new ones in a moment */
ugen_destroy_devnodes(sc);
#endif
/* XXX should only do this after setting new altno has succeeded */
for (endptno = 0; endptno < nendpt; endptno++) {
ed = usbd_interface2endpoint_descriptor(iface,endptno);
endpt = ed->bEndpointAddress;
dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
sce->sc = 0;
sce->edesc = 0;
sce->iface = 0;
}
/* change setting */
err = usbd_set_interface(iface, altno);
if (err)
return (err);
err = usbd_endpoint_count(iface, &nendpt);
if (err)
return (err);
for (endptno = 0; endptno < nendpt; endptno++) {
ed = usbd_interface2endpoint_descriptor(iface,endptno);
endpt = ed->bEndpointAddress;
dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
sce->sc = sc;
sce->edesc = ed;
sce->iface = iface;
}
#if defined(__FreeBSD__)
/* make the new devices */
ugen_make_devnodes(sc);
#endif
return (0);
}
/* Retrieve a complete descriptor for a certain device and index. */
Static usb_config_descriptor_t *
ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
{
usb_config_descriptor_t *cdesc, *tdesc, cdescr;
int len;
usbd_status err;
if (index == USB_CURRENT_CONFIG_INDEX) {
tdesc = usbd_get_config_descriptor(sc->sc_udev);
len = UGETW(tdesc->wTotalLength);
if (lenp)
*lenp = len;
cdesc = malloc(len, M_TEMP, M_WAITOK);
memcpy(cdesc, tdesc, len);
DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
} else {
err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
if (err)
return (0);
len = UGETW(cdescr.wTotalLength);
DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
if (lenp)
*lenp = len;
cdesc = malloc(len, M_TEMP, M_WAITOK);
err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
if (err) {
free(cdesc, M_TEMP);
return (0);
}
}
return (cdesc);
}
Static int
ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
{
usbd_interface_handle iface;
usbd_status err;
err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
if (err)
return (-1);
return (usbd_get_interface_altindex(iface));
}
Static int
ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
caddr_t addr, int flag, usb_proc_ptr p)
{
struct ugen_endpoint *sce;
usbd_status err;
usbd_interface_handle iface;
struct usb_config_desc *cd;
usb_config_descriptor_t *cdesc;
struct usb_interface_desc *id;
usb_interface_descriptor_t *idesc;
struct usb_endpoint_desc *ed;
usb_endpoint_descriptor_t *edesc;
struct usb_alt_interface *ai;
struct usb_string_desc *si;
u_int8_t conf, alt;
DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
if (sc->sc_dying)
return (EIO);
switch (cmd) {
case FIONBIO:
/* All handled in the upper FS layer. */
return (0);
case USB_SET_SHORT_XFER:
/* This flag only affects read */
if (endpt == USB_CONTROL_ENDPOINT)
return (EINVAL);
sce = &sc->sc_endpoints[endpt][IN];
if (sce->pipeh == NULL) {
printf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n");
return (EIO);
}
if (*(int *)addr)
sce->state |= UGEN_SHORT_OK;
else
sce->state &= ~UGEN_SHORT_OK;
/*
* If this is a bulk data pipe awaiting data, then we
* need to restart the current operation with the new
* short transfer status set.
*/
if (sce->bulkreq.xfer != NULL && sce->bulkreq.datardy == 0) {
usbd_abort_pipe(sce->pipeh);
usbd_setup_xfer(sce->bulkreq.xfer, sce->pipeh, sce,
sce->bulkreq.buf, sce->bulkreq.maxlen,
sce->state & UGEN_SHORT_OK ?
USBD_SHORT_XFER_OK : 0, sce->timeout, ugen_rdcb);
usbd_transfer(sce->bulkreq.xfer);
}
return (0);
case USB_SET_TIMEOUT:
sce = &sc->sc_endpoints[endpt][IN];
sce->timeout = *(int *)addr;
return (0);
default:
break;
}
if (endpt != USB_CONTROL_ENDPOINT)
return (EINVAL);
switch (cmd) {
#ifdef USB_DEBUG
case USB_SETDEBUG:
ugendebug = *(int *)addr;
break;
#endif
case USB_GET_CONFIG:
err = usbd_get_config(sc->sc_udev, &conf);
if (err)
return (EIO);
*(int *)addr = conf;
break;
case USB_SET_CONFIG:
if (!(flag & FWRITE))
return (EPERM);
#if defined(__FreeBSD__)
ugen_destroy_devnodes(sc);
#endif
err = ugen_set_config(sc, *(int *)addr);
switch (err) {
case USBD_NORMAL_COMPLETION:
#if defined(__FreeBSD__)
ugen_make_devnodes(sc);
#endif
break;
case USBD_IN_USE:
return (EBUSY);
default:
return (EIO);
}
break;
case USB_GET_ALTINTERFACE:
ai = (struct usb_alt_interface *)addr;
err = usbd_device2interface_handle(sc->sc_udev,
ai->uai_interface_index, &iface);
if (err)
return (EINVAL);
idesc = usbd_get_interface_descriptor(iface);
if (idesc == NULL)
return (EIO);
ai->uai_alt_no = idesc->bAlternateSetting;
break;
case USB_SET_ALTINTERFACE:
if (!(flag & FWRITE))
return (EPERM);
ai = (struct usb_alt_interface *)addr;
err = usbd_device2interface_handle(sc->sc_udev,
ai->uai_interface_index, &iface);
if (err)
return (EINVAL);
err = ugen_set_interface(sc, ai->uai_interface_index, ai->uai_alt_no);
if (err)
return (EINVAL);
break;
case USB_GET_NO_ALT:
ai = (struct usb_alt_interface *)addr;
cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
if (cdesc == NULL)
return (EINVAL);
idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
if (idesc == NULL) {
free(cdesc, M_TEMP);
return (EINVAL);
}
ai->uai_alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber);
free(cdesc, M_TEMP);
break;
case USB_GET_DEVICE_DESC:
*(usb_device_descriptor_t *)addr =
*usbd_get_device_descriptor(sc->sc_udev);
break;
case USB_GET_CONFIG_DESC:
cd = (struct usb_config_desc *)addr;
cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
if (cdesc == NULL)
return (EINVAL);
cd->ucd_desc = *cdesc;
free(cdesc, M_TEMP);
break;
case USB_GET_INTERFACE_DESC:
id = (struct usb_interface_desc *)addr;
cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
if (cdesc == NULL)
return (EINVAL);
if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
id->uid_alt_index == USB_CURRENT_ALT_INDEX)
alt = ugen_get_alt_index(sc, id->uid_interface_index);
else
alt = id->uid_alt_index;
idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
if (idesc == NULL) {
free(cdesc, M_TEMP);
return (EINVAL);
}
id->uid_desc = *idesc;
free(cdesc, M_TEMP);
break;
case USB_GET_ENDPOINT_DESC:
ed = (struct usb_endpoint_desc *)addr;
cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
if (cdesc == NULL)
return (EINVAL);
if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
alt = ugen_get_alt_index(sc, ed->ued_interface_index);
else
alt = ed->ued_alt_index;
edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
alt, ed->ued_endpoint_index);
if (edesc == NULL) {
free(cdesc, M_TEMP);
return (EINVAL);
}
ed->ued_desc = *edesc;
free(cdesc, M_TEMP);
break;
case USB_GET_FULL_DESC:
{
int len;
struct iovec iov;
struct uio uio;
struct usb_full_desc *fd = (struct usb_full_desc *)addr;
int error;
cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
if (len > fd->ufd_size)
len = fd->ufd_size;
iov.iov_base = (caddr_t)fd->ufd_data;
iov.iov_len = len;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_resid = len;
uio.uio_offset = 0;
uio.uio_segflg = UIO_USERSPACE;
uio.uio_rw = UIO_READ;
uio.uio_procp = p;
error = uiomove((void *)cdesc, len, &uio);
free(cdesc, M_TEMP);
return (error);
}
case USB_GET_STRING_DESC: {
int len;
si = (struct usb_string_desc *)addr;
err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
si->usd_language_id, &si->usd_desc, &len);
if (err)
return (EINVAL);
break;
}
case USB_DO_REQUEST:
{
struct usb_ctl_request *ur = (void *)addr;
int len = UGETW(ur->ucr_request.wLength);
struct iovec iov;
struct uio uio;
void *ptr = 0;
usbd_status err;
int error = 0;
if (!(flag & FWRITE))
return (EPERM);
/* Avoid requests that would damage the bus integrity. */
if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
(ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
ur->ucr_request.bRequest == UR_SET_CONFIG) ||
(ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
ur->ucr_request.bRequest == UR_SET_INTERFACE))
return (EINVAL);
if (len < 0 || len > 32767)
return (EINVAL);
if (len != 0) {
iov.iov_base = (caddr_t)ur->ucr_data;
iov.iov_len = len;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_resid = len;
uio.uio_offset = 0;
uio.uio_segflg = UIO_USERSPACE;
uio.uio_rw =
ur->ucr_request.bmRequestType & UT_READ ?
UIO_READ : UIO_WRITE;
uio.uio_procp = p;
ptr = malloc(len, M_TEMP, M_WAITOK);
if (uio.uio_rw == UIO_WRITE) {
error = uiomove(ptr, len, &uio);
if (error)
goto ret;
}
}
sce = &sc->sc_endpoints[endpt][IN];
err = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
if (err) {
error = EIO;
goto ret;
}
if (len != 0) {
if (uio.uio_rw == UIO_READ) {
error = uiomove(ptr, len, &uio);
if (error)
goto ret;
}
}
ret:
if (ptr)
free(ptr, M_TEMP);
return (error);
}
case USB_GET_DEVICEINFO:
usbd_fill_deviceinfo(sc->sc_udev,
(struct usb_device_info *)addr, 1);
break;
default:
return (EINVAL);
}
return (0);
}
int
ugenioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr p)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
UGEN_DEV_REF(dev, sc);
error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, p);
UGEN_DEV_RELE(dev, sc);
return (error);
}
int
ugenpoll(struct cdev *dev, int events, usb_proc_ptr p)
{
struct ugen_softc *sc;
struct ugen_endpoint *sce;
int revents = 0;
int s;
USB_GET_SC(ugen, UGENUNIT(dev), sc);
if (sc->sc_dying)
return (EIO);
/* XXX always IN */
sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
if (!sce->edesc) {
printf("ugenpoll: no edesc\n");
return (EIO);
}
if (!sce->pipeh) {
printf("ugenpoll: no pipe\n");
return (EIO);
}
s = splusb();
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
if (events & (POLLIN | POLLRDNORM)) {
if (sce->q.c_cc > 0)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &sce->rsel);
}
break;
case UE_ISOCHRONOUS:
if (events & (POLLIN | POLLRDNORM)) {
if (sce->cur != sce->fill)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &sce->rsel);
}
break;
case UE_BULK:
/*
* We have async transfers for reads now, so we can
* select on those. Writes tend to complete immediately
* so we can get away without async code for those,
* though we should probably do async bulk out transfers
* too at some point.
*/
if (events & (POLLIN | POLLRDNORM)) {
if (sce->bulkreq.datardy)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &sce->rsel);
}
if (events & (POLLOUT | POLLWRNORM))
revents |= events & (POLLOUT | POLLWRNORM);
break;
default:
break;
}
splx(s);
return (revents);
}
#if defined(__FreeBSD__)
DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
#endif
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