File: [local] / sys / dev / usb / ugen.c (download)
Revision 1.1, Tue Mar 4 16:14:31 2008 UTC (16 years, 2 months ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: ugen.c,v 1.50 2007/06/29 13:31:42 henning Exp $ */
/* $NetBSD: ugen.c,v 1.63 2002/11/26 18:49:48 christos Exp $ */
/* $FreeBSD: src/sys/dev/usb/ugen.c,v 1.26 1999/11/17 22:33:41 n_hibma 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 (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>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/selinfo.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/poll.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#ifdef UGEN_DEBUG
#define DPRINTF(x) do { if (ugendebug) printf x; } while (0)
#define DPRINTFN(n,x) do { if (ugendebug>(n)) printf x; } while (0)
int ugendebug = 0;
#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;
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 ugen_softc {
struct device sc_dev; /* base device */
usbd_device_handle sc_udev;
char sc_is_open[USB_MAX_ENDPOINTS];
struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
#define OUT 0
#define IN 1
int sc_refcnt;
u_char sc_dying;
};
void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
usbd_status status);
void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
usbd_status status);
int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
int ugen_do_ioctl(struct ugen_softc *, int, u_long,
caddr_t, int, struct proc *);
int ugen_set_config(struct ugen_softc *sc, int configno);
usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
int index, int *lenp);
usbd_status ugen_set_interface(struct ugen_softc *, int, int);
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 UGENDEV(u, e) (makedev(0, ((u) << 4) | (e)))
int ugen_match(struct device *, void *, void *);
void ugen_attach(struct device *, struct device *, void *);
int ugen_detach(struct device *, int);
int ugen_activate(struct device *, enum devact);
struct cfdriver ugen_cd = {
NULL, "ugen", DV_DULL
};
const struct cfattach ugen_ca = {
sizeof(struct ugen_softc),
ugen_match,
ugen_attach,
ugen_detach,
ugen_activate,
};
int
ugen_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
#if 0
if (uaa->matchlvl)
return (uaa->matchlvl);
#endif
if (uaa->usegeneric) {
#ifdef __macppc__
/*
* Some Apple laptops have USB phantom devices which match
* the ADB devices. We want to ignore them to avoid
* confusing users, as the real hardware underneath is adb
* and has already attached.
*/
if (uaa->vendor == USB_VENDOR_APPLE &&
uaa->product == USB_PRODUCT_APPLE_ADB)
return (UMATCH_NONE);
#endif
return (UMATCH_GENERIC);
} else
return (UMATCH_NONE);
}
void
ugen_attach(struct device *parent, struct device *self, void *aux)
{
struct ugen_softc *sc = (struct ugen_softc *)self;
struct usb_attach_arg *uaa = aux;
usbd_device_handle udev;
char *devinfop;
usbd_status err;
int conf;
devinfop = usbd_devinfo_alloc(uaa->device, 0);
printf("\n%s: %s\n", sc->sc_dev.dv_xname, devinfop);
usbd_devinfo_free(devinfop);
sc->sc_udev = udev = uaa->device;
/* 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",
sc->sc_dev.dv_xname);
sc->sc_dying = 1;
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",
sc->sc_dev.dv_xname, conf);
sc->sc_dying = 1;
return;
}
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
&sc->sc_dev);
}
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",
sc->sc_dev.dv_xname, 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",
sc->sc_dev.dv_xname, 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(dev_t dev, int flag, int mode, struct proc *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;
if (unit >= ugen_cd.cd_ndevs)
return (ENXIO);
sc = ugen_cd.cd_devs[unit];
if (sc == NULL)
return (ENXIO);
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;
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 == 0 || 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);
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;
return (0);
}
int
ugenclose(dev_t dev, int flag, int mode, struct proc *p)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
struct ugen_endpoint *sce;
int dir;
int i;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
flag, mode, UGENUNIT(dev), endpt));
#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;
return (0);
}
for (dir = OUT; dir <= IN; dir++) {
if (!(flag & (dir == OUT ? FWRITE : FREAD)))
continue;
sce = &sc->sc_endpoints[endpt][dir];
if (sce == NULL || 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);
}
}
sc->sc_is_open[endpt] = 0;
return (0);
}
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;
char buf[UGEN_BBSIZE];
usbd_xfer_handle xfer;
usbd_status err;
int s;
int error = 0;
u_char buffer[UGEN_CHUNK];
DPRINTFN(5, ("%s: ugenread: %d\n", sc->sc_dev.dv_xname, endpt));
if (sc->sc_dying)
return (EIO);
if (endpt == USB_CONTROL_ENDPOINT)
return (ENODEV);
#ifdef DIAGNOSTIC
if (sce->edesc == NULL) {
printf("ugenread: no edesc\n");
return (EIO);
}
if (sce->pipeh == NULL) {
printf("ugenread: no pipe\n");
return (EIO);
}
#endif
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",
(sce->timeout * hz) / 1000);
DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
if (sc->sc_dying)
error = EIO;
if (error == EWOULDBLOCK) { /* timeout, return 0 */
error = 0;
break;
}
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:
xfer = usbd_alloc_xfer(sc->sc_udev);
if (xfer == 0)
return (ENOMEM);
while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) {
DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
tn = n;
err = usbd_bulk_transfer(
xfer, sce->pipeh,
sce->state & UGEN_SHORT_OK ?
USBD_SHORT_XFER_OK : 0,
sce->timeout, buf, &tn, "ugenrb");
if (err) {
if (err == USBD_INTERRUPTED)
error = EINTR;
else if (err == USBD_TIMEOUT)
error = ETIMEDOUT;
else
error = EIO;
break;
}
DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
error = uiomove(buf, tn, uio);
if (error || tn < n)
break;
}
usbd_free_xfer(xfer);
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(dev_t dev, struct uio *uio, int flag)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
sc->sc_refcnt++;
error = ugen_do_read(sc, endpt, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
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", sc->sc_dev.dv_xname, endpt));
if (sc->sc_dying)
return (EIO);
if (endpt == USB_CONTROL_ENDPOINT)
return (ENODEV);
#ifdef DIAGNOSTIC
if (sce->edesc == NULL) {
printf("ugenwrite: no edesc\n");
return (EIO);
}
if (sce->pipeh == NULL) {
printf("ugenwrite: no pipe\n");
return (EIO);
}
#endif
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(dev_t dev, struct uio *uio, int flag)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
sc->sc_refcnt++;
error = ugen_do_write(sc, endpt, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
int
ugen_activate(struct device *self, enum devact act)
{
struct ugen_softc *sc = (struct ugen_softc *)self;
switch (act) {
case DVACT_ACTIVATE:
break;
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
break;
}
return (0);
}
int
ugen_detach(struct device *self, int flags)
{
struct ugen_softc *sc = (struct ugen_softc *)self;
struct ugen_endpoint *sce;
int i, dir;
int s;
int maj, mn;
DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags));
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 && sce->pipeh)
usbd_abort_pipe(sce->pipeh);
}
}
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. */
usb_detach_wait(&sc->sc_dev);
}
splx(s);
/* 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);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
&sc->sc_dev);
return (0);
}
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);
}
selwakeup(&sce->rsel);
}
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", 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->limit - sce->cur);
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);
}
selwakeup(&sce->rsel);
}
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);
/* 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;
}
return (0);
}
/* Retrieve a complete descriptor for a certain device and index. */
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);
}
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));
}
int
ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
caddr_t addr, int flag, struct proc *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:
if (endpt == USB_CONTROL_ENDPOINT)
return (EINVAL);
/* This flag only affects read */
sce = &sc->sc_endpoints[endpt][IN];
if (sce == NULL || sce->pipeh == NULL)
return (EINVAL);
if (*(int *)addr)
sce->state |= UGEN_SHORT_OK;
else
sce->state &= ~UGEN_SHORT_OK;
return (0);
case USB_SET_TIMEOUT:
sce = &sc->sc_endpoints[endpt][IN];
if (sce == NULL
/* XXX this shouldn't happen, but the distinction between
input and output pipes isn't clear enough.
|| sce->pipeh == NULL */
)
return (EINVAL);
sce->timeout = *(int *)addr;
return (0);
default:
break;
}
if (endpt != USB_CONTROL_ENDPOINT)
return (EINVAL);
switch (cmd) {
#ifdef UGEN_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);
err = ugen_set_config(sc, *(int *)addr);
switch (err) {
case USBD_NORMAL_COMPLETION:
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(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
int endpt = UGENENDPOINT(dev);
struct ugen_softc *sc;
int error;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
sc->sc_refcnt++;
error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, p);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
int
ugenpoll(dev_t dev, int events, struct proc *p)
{
struct ugen_softc *sc;
struct ugen_endpoint *sce;
int revents = 0;
int s;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
if (sc->sc_dying)
return (POLLERR);
/* XXX always IN */
sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
if (sce == NULL)
return (POLLERR);
#ifdef DIAGNOSTIC
if (!sce->edesc) {
printf("ugenpoll: no edesc\n");
return (POLLERR);
}
if (!sce->pipeh) {
printf("ugenpoll: no pipe\n");
return (POLLERR);
}
#endif
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 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);
break;
default:
break;
}
splx(s);
return (revents);
}
void filt_ugenrdetach(struct knote *);
int filt_ugenread_intr(struct knote *, long);
int filt_ugenread_isoc(struct knote *, long);
int ugenkqfilter(dev_t, struct knote *);
void
filt_ugenrdetach(struct knote *kn)
{
struct ugen_endpoint *sce = (void *)kn->kn_hook;
int s;
s = splusb();
SLIST_REMOVE(&sce->rsel.si_note, kn, knote, kn_selnext);
splx(s);
}
int
filt_ugenread_intr(struct knote *kn, long hint)
{
struct ugen_endpoint *sce = (void *)kn->kn_hook;
kn->kn_data = sce->q.c_cc;
return (kn->kn_data > 0);
}
int
filt_ugenread_isoc(struct knote *kn, long hint)
{
struct ugen_endpoint *sce = (void *)kn->kn_hook;
if (sce->cur == sce->fill)
return (0);
if (sce->cur < sce->fill)
kn->kn_data = sce->fill - sce->cur;
else
kn->kn_data = (sce->limit - sce->cur) +
(sce->fill - sce->ibuf);
return (1);
}
struct filterops ugenread_intr_filtops =
{ 1, NULL, filt_ugenrdetach, filt_ugenread_intr };
struct filterops ugenread_isoc_filtops =
{ 1, NULL, filt_ugenrdetach, filt_ugenread_isoc };
struct filterops ugen_seltrue_filtops =
{ 1, NULL, filt_ugenrdetach, filt_seltrue };
int
ugenkqfilter(dev_t dev, struct knote *kn)
{
struct ugen_softc *sc;
struct ugen_endpoint *sce;
struct klist *klist;
int s;
sc = ugen_cd.cd_devs[UGENUNIT(dev)];
if (sc->sc_dying)
return (1);
/* XXX always IN */
sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
if (sce == NULL)
return (1);
switch (kn->kn_filter) {
case EVFILT_READ:
klist = &sce->rsel.si_note;
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
kn->kn_fop = &ugenread_intr_filtops;
break;
case UE_ISOCHRONOUS:
kn->kn_fop = &ugenread_isoc_filtops;
break;
case UE_BULK:
/*
* We have no easy way of determining if a read will
* yield any data or a write will happen.
* So, emulate "seltrue".
*/
kn->kn_fop = &ugen_seltrue_filtops;
break;
default:
return (1);
}
break;
case EVFILT_WRITE:
klist = &sce->rsel.si_note;
switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
case UE_ISOCHRONOUS:
/* XXX poll doesn't support this */
return (1);
case UE_BULK:
/*
* We have no easy way of determining if a read will
* yield any data or a write will happen.
* So, emulate "seltrue".
*/
kn->kn_fop = &ugen_seltrue_filtops;
break;
default:
return (1);
}
break;
default:
return (1);
}
kn->kn_hook = (void *)sce;
s = splusb();
SLIST_INSERT_HEAD(klist, kn, kn_selnext);
splx(s);
return (0);
}
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