File: [local] / sys / dev / usb / usbdi.c (download)
Revision 1.1, Tue Mar 4 16:14:30 2008 UTC (16 years, 6 months ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: usbdi.c,v 1.33 2007/06/18 11:37:04 mbalmer Exp $ */
/* $NetBSD: usbdi.c,v 1.103 2002/09/27 15:37:38 provos Exp $ */
/* $FreeBSD: src/sys/dev/usb/usbdi.c,v 1.28 1999/11/17 22:33:49 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/device.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <machine/bus.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#ifdef USB_DEBUG
#define DPRINTF(x) do { if (usbdebug) printf x; } while (0)
#define DPRINTFN(n,x) do { if (usbdebug>(n)) printf x; } while (0)
extern int usbdebug;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
usbd_status usbd_ar_pipe(usbd_pipe_handle pipe);
void usbd_do_request_async_cb(usbd_xfer_handle, usbd_private_handle,
usbd_status);
void usbd_start_next(usbd_pipe_handle pipe);
usbd_status usbd_open_pipe_ival(usbd_interface_handle, u_int8_t, u_int8_t,
usbd_pipe_handle *, int);
int usbd_nbuses = 0;
void
usbd_init(void)
{
usbd_nbuses++;
}
void
usbd_finish(void)
{
--usbd_nbuses;
}
static __inline int
usbd_xfer_isread(usbd_xfer_handle xfer)
{
if (xfer->rqflags & URQ_REQUEST)
return (xfer->request.bmRequestType & UT_READ);
else
return (xfer->pipe->endpoint->edesc->bEndpointAddress &
UE_DIR_IN);
}
#ifdef USB_DEBUG
void
usbd_dump_iface(struct usbd_interface *iface)
{
printf("usbd_dump_iface: iface=%p\n", iface);
if (iface == NULL)
return;
printf(" device=%p idesc=%p index=%d altindex=%d priv=%p\n",
iface->device, iface->idesc, iface->index, iface->altindex,
iface->priv);
}
void
usbd_dump_device(struct usbd_device *dev)
{
printf("usbd_dump_device: dev=%p\n", dev);
if (dev == NULL)
return;
printf(" bus=%p default_pipe=%p\n", dev->bus, dev->default_pipe);
printf(" address=%d config=%d depth=%d speed=%d self_powered=%d "
"power=%d langid=%d\n", dev->address, dev->config, dev->depth,
dev->speed, dev->self_powered, dev->power, dev->langid);
}
void
usbd_dump_endpoint(struct usbd_endpoint *endp)
{
printf("usbd_dump_endpoint: endp=%p\n", endp);
if (endp == NULL)
return;
printf(" edesc=%p refcnt=%d\n", endp->edesc, endp->refcnt);
if (endp->edesc)
printf(" bEndpointAddress=0x%02x\n",
endp->edesc->bEndpointAddress);
}
void
usbd_dump_queue(usbd_pipe_handle pipe)
{
usbd_xfer_handle xfer;
printf("usbd_dump_queue: pipe=%p\n", pipe);
SIMPLEQ_FOREACH(xfer, &pipe->queue, next) {
printf(" xfer=%p\n", xfer);
}
}
void
usbd_dump_pipe(usbd_pipe_handle pipe)
{
printf("usbd_dump_pipe: pipe=%p\n", pipe);
if (pipe == NULL)
return;
usbd_dump_iface(pipe->iface);
usbd_dump_device(pipe->device);
usbd_dump_endpoint(pipe->endpoint);
printf(" (usbd_dump_pipe:)\n refcnt=%d running=%d aborting=%d\n",
pipe->refcnt, pipe->running, pipe->aborting);
printf(" intrxfer=%p, repeat=%d, interval=%d\n", pipe->intrxfer,
pipe->repeat, pipe->interval);
}
#endif
usbd_status
usbd_open_pipe(usbd_interface_handle iface, u_int8_t address, u_int8_t flags,
usbd_pipe_handle *pipe)
{
return (usbd_open_pipe_ival(iface, address, flags, pipe,
USBD_DEFAULT_INTERVAL));
}
usbd_status
usbd_open_pipe_ival(usbd_interface_handle iface, u_int8_t address,
u_int8_t flags, usbd_pipe_handle *pipe, int ival)
{
usbd_pipe_handle p;
struct usbd_endpoint *ep;
usbd_status err;
int i;
DPRINTFN(3,("usbd_open_pipe: iface=%p address=0x%x flags=0x%x\n",
iface, address, flags));
for (i = 0; i < iface->idesc->bNumEndpoints; i++) {
ep = &iface->endpoints[i];
if (ep->edesc == NULL)
return (USBD_IOERROR);
if (ep->edesc->bEndpointAddress == address)
goto found;
}
return (USBD_BAD_ADDRESS);
found:
if ((flags & USBD_EXCLUSIVE_USE) && ep->refcnt != 0)
return (USBD_IN_USE);
err = usbd_setup_pipe(iface->device, iface, ep, ival, &p);
if (err)
return (err);
LIST_INSERT_HEAD(&iface->pipes, p, next);
*pipe = p;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_open_pipe_intr(usbd_interface_handle iface, u_int8_t address,
u_int8_t flags, usbd_pipe_handle *pipe, usbd_private_handle priv,
void *buffer, u_int32_t len, usbd_callback cb, int ival)
{
usbd_status err;
usbd_xfer_handle xfer;
usbd_pipe_handle ipipe;
DPRINTFN(3,("usbd_open_pipe_intr: address=0x%x flags=0x%x len=%d\n",
address, flags, len));
err = usbd_open_pipe_ival(iface, address, USBD_EXCLUSIVE_USE, &ipipe,
ival);
if (err)
return (err);
xfer = usbd_alloc_xfer(iface->device);
if (xfer == NULL) {
err = USBD_NOMEM;
goto bad1;
}
usbd_setup_xfer(xfer, ipipe, priv, buffer, len, flags,
USBD_NO_TIMEOUT, cb);
ipipe->intrxfer = xfer;
ipipe->repeat = 1;
err = usbd_transfer(xfer);
*pipe = ipipe;
if (err != USBD_IN_PROGRESS)
goto bad2;
return (USBD_NORMAL_COMPLETION);
bad2:
ipipe->intrxfer = NULL;
ipipe->repeat = 0;
usbd_free_xfer(xfer);
bad1:
usbd_close_pipe(ipipe);
return (err);
}
usbd_status
usbd_close_pipe(usbd_pipe_handle pipe)
{
#ifdef DIAGNOSTIC
if (pipe == NULL) {
printf("usbd_close_pipe: pipe==NULL\n");
return (USBD_NORMAL_COMPLETION);
}
#endif
if (--pipe->refcnt != 0)
return (USBD_NORMAL_COMPLETION);
if (! SIMPLEQ_EMPTY(&pipe->queue))
return (USBD_PENDING_REQUESTS);
LIST_REMOVE(pipe, next);
pipe->endpoint->refcnt--;
pipe->methods->close(pipe);
if (pipe->intrxfer != NULL)
usbd_free_xfer(pipe->intrxfer);
free(pipe, M_USB);
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_transfer(usbd_xfer_handle xfer)
{
usbd_pipe_handle pipe = xfer->pipe;
usb_dma_t *dmap = &xfer->dmabuf;
usbd_status err;
u_int size;
int s;
DPRINTFN(5,("usbd_transfer: xfer=%p, flags=%d, pipe=%p, running=%d\n",
xfer, xfer->flags, pipe, pipe->running));
#ifdef USB_DEBUG
if (usbdebug > 5)
usbd_dump_queue(pipe);
#endif
xfer->done = 0;
if (pipe->aborting)
return (USBD_CANCELLED);
size = xfer->length;
/* If there is no buffer, allocate one. */
if (!(xfer->rqflags & URQ_DEV_DMABUF) && size != 0) {
struct usbd_bus *bus = pipe->device->bus;
#ifdef DIAGNOSTIC
if (xfer->rqflags & URQ_AUTO_DMABUF)
printf("usbd_transfer: has old buffer!\n");
#endif
err = bus->methods->allocm(bus, dmap, size);
if (err)
return (err);
xfer->rqflags |= URQ_AUTO_DMABUF;
}
/* Copy data if going out. */
if (!(xfer->flags & USBD_NO_COPY) && size != 0 &&
!usbd_xfer_isread(xfer))
memcpy(KERNADDR(dmap, 0), xfer->buffer, size);
err = pipe->methods->transfer(xfer);
if (err != USBD_IN_PROGRESS && err) {
/* The transfer has not been queued, so free buffer. */
if (xfer->rqflags & URQ_AUTO_DMABUF) {
struct usbd_bus *bus = pipe->device->bus;
bus->methods->freem(bus, &xfer->dmabuf);
xfer->rqflags &= ~URQ_AUTO_DMABUF;
}
}
if (!(xfer->flags & USBD_SYNCHRONOUS))
return (err);
/* Sync transfer, wait for completion. */
if (err != USBD_IN_PROGRESS)
return (err);
s = splusb();
while (!xfer->done) {
if (pipe->device->bus->use_polling)
panic("usbd_transfer: not done");
tsleep(xfer, PRIBIO, "usbsyn", 0);
}
splx(s);
return (xfer->status);
}
/* Like usbd_transfer(), but waits for completion. */
usbd_status
usbd_sync_transfer(usbd_xfer_handle xfer)
{
xfer->flags |= USBD_SYNCHRONOUS;
return (usbd_transfer(xfer));
}
void *
usbd_alloc_buffer(usbd_xfer_handle xfer, u_int32_t size)
{
struct usbd_bus *bus = xfer->device->bus;
usbd_status err;
#ifdef DIAGNOSTIC
if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
printf("usbd_alloc_buffer: xfer already has a buffer\n");
#endif
err = bus->methods->allocm(bus, &xfer->dmabuf, size);
if (err)
return (NULL);
xfer->rqflags |= URQ_DEV_DMABUF;
return (KERNADDR(&xfer->dmabuf, 0));
}
void
usbd_free_buffer(usbd_xfer_handle xfer)
{
#ifdef DIAGNOSTIC
if (!(xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))) {
printf("usbd_free_buffer: no buffer\n");
return;
}
#endif
xfer->rqflags &= ~(URQ_DEV_DMABUF | URQ_AUTO_DMABUF);
xfer->device->bus->methods->freem(xfer->device->bus, &xfer->dmabuf);
}
void *
usbd_get_buffer(usbd_xfer_handle xfer)
{
if (!(xfer->rqflags & URQ_DEV_DMABUF))
return (0);
return (KERNADDR(&xfer->dmabuf, 0));
}
usbd_xfer_handle
usbd_alloc_xfer(usbd_device_handle dev)
{
usbd_xfer_handle xfer;
xfer = dev->bus->methods->allocx(dev->bus);
if (xfer == NULL)
return (NULL);
xfer->device = dev;
timeout_set(&xfer->timeout_handle, NULL, NULL);
DPRINTFN(5,("usbd_alloc_xfer() = %p\n", xfer));
return (xfer);
}
usbd_status
usbd_free_xfer(usbd_xfer_handle xfer)
{
DPRINTFN(5,("usbd_free_xfer: %p\n", xfer));
if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
usbd_free_buffer(xfer);
xfer->device->bus->methods->freex(xfer->device->bus, xfer);
return (USBD_NORMAL_COMPLETION);
}
void
usbd_setup_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe,
usbd_private_handle priv, void *buffer, u_int32_t length, u_int16_t flags,
u_int32_t timeout, usbd_callback callback)
{
xfer->pipe = pipe;
xfer->priv = priv;
xfer->buffer = buffer;
xfer->length = length;
xfer->actlen = 0;
xfer->flags = flags;
xfer->timeout = timeout;
xfer->status = USBD_NOT_STARTED;
xfer->callback = callback;
xfer->rqflags &= ~URQ_REQUEST;
xfer->nframes = 0;
}
void
usbd_setup_default_xfer(usbd_xfer_handle xfer, usbd_device_handle dev,
usbd_private_handle priv, u_int32_t timeout, usb_device_request_t *req,
void *buffer, u_int32_t length, u_int16_t flags, usbd_callback callback)
{
xfer->pipe = dev->default_pipe;
xfer->priv = priv;
xfer->buffer = buffer;
xfer->length = length;
xfer->actlen = 0;
xfer->flags = flags;
xfer->timeout = timeout;
xfer->status = USBD_NOT_STARTED;
xfer->callback = callback;
xfer->request = *req;
xfer->rqflags |= URQ_REQUEST;
xfer->nframes = 0;
}
void
usbd_setup_isoc_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe,
usbd_private_handle priv, u_int16_t *frlengths, u_int32_t nframes,
u_int16_t flags, usbd_callback callback)
{
xfer->pipe = pipe;
xfer->priv = priv;
xfer->buffer = 0;
xfer->length = 0;
xfer->actlen = 0;
xfer->flags = flags;
xfer->timeout = USBD_NO_TIMEOUT;
xfer->status = USBD_NOT_STARTED;
xfer->callback = callback;
xfer->rqflags &= ~URQ_REQUEST;
xfer->frlengths = frlengths;
xfer->nframes = nframes;
}
void
usbd_get_xfer_status(usbd_xfer_handle xfer, usbd_private_handle *priv,
void **buffer, u_int32_t *count, usbd_status *status)
{
if (priv != NULL)
*priv = xfer->priv;
if (buffer != NULL)
*buffer = xfer->buffer;
if (count != NULL)
*count = xfer->actlen;
if (status != NULL)
*status = xfer->status;
}
usb_config_descriptor_t *
usbd_get_config_descriptor(usbd_device_handle dev)
{
#ifdef DIAGNOSTIC
if (dev == NULL) {
printf("usbd_get_config_descriptor: dev == NULL\n");
return (NULL);
}
#endif
return (dev->cdesc);
}
usb_interface_descriptor_t *
usbd_get_interface_descriptor(usbd_interface_handle iface)
{
#ifdef DIAGNOSTIC
if (iface == NULL) {
printf("usbd_get_interface_descriptor: dev == NULL\n");
return (NULL);
}
#endif
return (iface->idesc);
}
usb_device_descriptor_t *
usbd_get_device_descriptor(usbd_device_handle dev)
{
return (&dev->ddesc);
}
usb_endpoint_descriptor_t *
usbd_interface2endpoint_descriptor(usbd_interface_handle iface, u_int8_t index)
{
if (index >= iface->idesc->bNumEndpoints)
return (0);
return (iface->endpoints[index].edesc);
}
usbd_status
usbd_abort_pipe(usbd_pipe_handle pipe)
{
usbd_status err;
int s;
#ifdef DIAGNOSTIC
if (pipe == NULL) {
printf("usbd_abort_pipe: pipe==NULL\n");
return (USBD_NORMAL_COMPLETION);
}
#endif
s = splusb();
err = usbd_ar_pipe(pipe);
splx(s);
return (err);
}
usbd_status
usbd_clear_endpoint_stall(usbd_pipe_handle pipe)
{
usbd_device_handle dev = pipe->device;
usb_device_request_t req;
usbd_status err;
DPRINTFN(8, ("usbd_clear_endpoint_stall\n"));
/*
* Clearing en endpoint stall resets the endpoint toggle, so
* do the same to the HC toggle.
*/
pipe->methods->cleartoggle(pipe);
req.bmRequestType = UT_WRITE_ENDPOINT;
req.bRequest = UR_CLEAR_FEATURE;
USETW(req.wValue, UF_ENDPOINT_HALT);
USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress);
USETW(req.wLength, 0);
err = usbd_do_request(dev, &req, 0);
#if 0
XXX should we do this?
if (!err) {
pipe->state = USBD_PIPE_ACTIVE;
/* XXX activate pipe */
}
#endif
return (err);
}
usbd_status
usbd_clear_endpoint_stall_async(usbd_pipe_handle pipe)
{
usbd_device_handle dev = pipe->device;
usb_device_request_t req;
usbd_status err;
pipe->methods->cleartoggle(pipe);
req.bmRequestType = UT_WRITE_ENDPOINT;
req.bRequest = UR_CLEAR_FEATURE;
USETW(req.wValue, UF_ENDPOINT_HALT);
USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress);
USETW(req.wLength, 0);
err = usbd_do_request_async(dev, &req, 0);
return (err);
}
void
usbd_clear_endpoint_toggle(usbd_pipe_handle pipe)
{
pipe->methods->cleartoggle(pipe);
}
usbd_status
usbd_endpoint_count(usbd_interface_handle iface, u_int8_t *count)
{
#ifdef DIAGNOSTIC
if (iface == NULL || iface->idesc == NULL) {
printf("usbd_endpoint_count: NULL pointer\n");
return (USBD_INVAL);
}
#endif
*count = iface->idesc->bNumEndpoints;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_interface_count(usbd_device_handle dev, u_int8_t *count)
{
if (dev->cdesc == NULL)
return (USBD_NOT_CONFIGURED);
*count = dev->cdesc->bNumInterface;
return (USBD_NORMAL_COMPLETION);
}
void
usbd_interface2device_handle(usbd_interface_handle iface,
usbd_device_handle *dev)
{
*dev = iface->device;
}
usbd_status
usbd_device2interface_handle(usbd_device_handle dev, u_int8_t ifaceno,
usbd_interface_handle *iface)
{
if (dev->cdesc == NULL)
return (USBD_NOT_CONFIGURED);
if (ifaceno >= dev->cdesc->bNumInterface)
return (USBD_INVAL);
*iface = &dev->ifaces[ifaceno];
return (USBD_NORMAL_COMPLETION);
}
usbd_device_handle
usbd_pipe2device_handle(usbd_pipe_handle pipe)
{
return (pipe->device);
}
/* XXXX use altno */
usbd_status
usbd_set_interface(usbd_interface_handle iface, int altidx)
{
usb_device_request_t req;
usbd_status err;
void *endpoints;
if (LIST_FIRST(&iface->pipes) != 0)
return (USBD_IN_USE);
endpoints = iface->endpoints;
err = usbd_fill_iface_data(iface->device, iface->index, altidx);
if (err)
return (err);
/* new setting works, we can free old endpoints */
if (endpoints != NULL)
free(endpoints, M_USB);
#ifdef DIAGNOSTIC
if (iface->idesc == NULL) {
printf("usbd_set_interface: NULL pointer\n");
return (USBD_INVAL);
}
#endif
req.bmRequestType = UT_WRITE_INTERFACE;
req.bRequest = UR_SET_INTERFACE;
USETW(req.wValue, iface->idesc->bAlternateSetting);
USETW(req.wIndex, iface->idesc->bInterfaceNumber);
USETW(req.wLength, 0);
return (usbd_do_request(iface->device, &req, 0));
}
int
usbd_get_no_alts(usb_config_descriptor_t *cdesc, int ifaceno)
{
char *p = (char *)cdesc;
char *end = p + UGETW(cdesc->wTotalLength);
usb_interface_descriptor_t *d;
int n;
for (n = 0; p < end; p += d->bLength) {
d = (usb_interface_descriptor_t *)p;
if (p + d->bLength <= end &&
d->bDescriptorType == UDESC_INTERFACE &&
d->bInterfaceNumber == ifaceno)
n++;
}
return (n);
}
int
usbd_get_interface_altindex(usbd_interface_handle iface)
{
return (iface->altindex);
}
usbd_status
usbd_get_interface(usbd_interface_handle iface, u_int8_t *aiface)
{
usb_device_request_t req;
req.bmRequestType = UT_READ_INTERFACE;
req.bRequest = UR_GET_INTERFACE;
USETW(req.wValue, 0);
USETW(req.wIndex, iface->idesc->bInterfaceNumber);
USETW(req.wLength, 1);
return (usbd_do_request(iface->device, &req, aiface));
}
/*** Internal routines ***/
/* Dequeue all pipe operations, called at splusb(). */
usbd_status
usbd_ar_pipe(usbd_pipe_handle pipe)
{
usbd_xfer_handle xfer;
SPLUSBCHECK;
DPRINTFN(2,("usbd_ar_pipe: pipe=%p\n", pipe));
#ifdef USB_DEBUG
if (usbdebug > 5)
usbd_dump_queue(pipe);
#endif
pipe->repeat = 0;
pipe->aborting = 1;
while ((xfer = SIMPLEQ_FIRST(&pipe->queue)) != NULL) {
DPRINTFN(2,("usbd_ar_pipe: pipe=%p xfer=%p (methods=%p)\n",
pipe, xfer, pipe->methods));
/* Make the HC abort it (and invoke the callback). */
pipe->methods->abort(xfer);
/* XXX only for non-0 usbd_clear_endpoint_stall(pipe); */
}
pipe->aborting = 0;
return (USBD_NORMAL_COMPLETION);
}
/* Called at splusb() */
void
usb_transfer_complete(usbd_xfer_handle xfer)
{
usbd_pipe_handle pipe = xfer->pipe;
usb_dma_t *dmap = &xfer->dmabuf;
int repeat = pipe->repeat;
int polling;
SPLUSBCHECK;
DPRINTFN(5, ("usb_transfer_complete: pipe=%p xfer=%p status=%d "
"actlen=%d\n", pipe, xfer, xfer->status, xfer->actlen));
#ifdef DIAGNOSTIC
if (xfer->busy_free != XFER_ONQU) {
printf("usb_transfer_complete: xfer=%p not busy 0x%08x\n",
xfer, xfer->busy_free);
return;
}
#endif
#ifdef DIAGNOSTIC
if (pipe == NULL) {
printf("usbd_transfer_cb: pipe==0, xfer=%p\n", xfer);
return;
}
#endif
polling = pipe->device->bus->use_polling;
/* XXXX */
if (polling)
pipe->running = 0;
if (!(xfer->flags & USBD_NO_COPY) && xfer->actlen != 0 &&
usbd_xfer_isread(xfer)) {
#ifdef DIAGNOSTIC
if (xfer->actlen > xfer->length) {
printf("usb_transfer_complete: actlen > len %d > %d\n",
xfer->actlen, xfer->length);
xfer->actlen = xfer->length;
}
#endif
memcpy(xfer->buffer, KERNADDR(dmap, 0), xfer->actlen);
}
/* if we allocated the buffer in usbd_transfer() we free it here. */
if (xfer->rqflags & URQ_AUTO_DMABUF) {
if (!repeat) {
struct usbd_bus *bus = pipe->device->bus;
bus->methods->freem(bus, dmap);
xfer->rqflags &= ~URQ_AUTO_DMABUF;
}
}
if (!repeat) {
/* Remove request from queue. */
#ifdef DIAGNOSTIC
if (xfer != SIMPLEQ_FIRST(&pipe->queue))
printf("usb_transfer_complete: bad dequeue %p != %p\n",
xfer, SIMPLEQ_FIRST(&pipe->queue));
xfer->busy_free = XFER_BUSY;
#endif
SIMPLEQ_REMOVE_HEAD(&pipe->queue, next);
}
DPRINTFN(5,("usb_transfer_complete: repeat=%d new head=%p\n", repeat,
SIMPLEQ_FIRST(&pipe->queue)));
/* Count completed transfers. */
++pipe->device->bus->stats.uds_requests
[pipe->endpoint->edesc->bmAttributes & UE_XFERTYPE];
xfer->done = 1;
if (!xfer->status && xfer->actlen < xfer->length &&
!(xfer->flags & USBD_SHORT_XFER_OK)) {
DPRINTFN(-1,("usbd_transfer_cb: short transfer %d<%d\n",
xfer->actlen, xfer->length));
xfer->status = USBD_SHORT_XFER;
}
if (xfer->callback)
xfer->callback(xfer, xfer->priv, xfer->status);
#ifdef DIAGNOSTIC
if (pipe->methods->done != NULL)
pipe->methods->done(xfer);
else
printf("usb_transfer_complete: pipe->methods->done == NULL\n");
#else
pipe->methods->done(xfer);
#endif
if ((xfer->flags & USBD_SYNCHRONOUS) && !polling)
wakeup(xfer);
if (!repeat) {
/* XXX should we stop the queue on all errors? */
if ((xfer->status == USBD_CANCELLED ||
xfer->status == USBD_TIMEOUT) &&
pipe->iface != NULL) /* not control pipe */
pipe->running = 0;
else
usbd_start_next(pipe);
}
}
usbd_status
usb_insert_transfer(usbd_xfer_handle xfer)
{
usbd_pipe_handle pipe = xfer->pipe;
usbd_status err;
int s;
DPRINTFN(5,("usb_insert_transfer: pipe=%p running=%d timeout=%d\n",
pipe, pipe->running, xfer->timeout));
#ifdef DIAGNOSTIC
if (xfer->busy_free != XFER_BUSY) {
printf("usb_insert_transfer: xfer=%p not busy 0x%08x\n", xfer,
xfer->busy_free);
return (USBD_INVAL);
}
xfer->busy_free = XFER_ONQU;
#endif
s = splusb();
SIMPLEQ_INSERT_TAIL(&pipe->queue, xfer, next);
if (pipe->running)
err = USBD_IN_PROGRESS;
else {
pipe->running = 1;
err = USBD_NORMAL_COMPLETION;
}
splx(s);
return (err);
}
/* Called at splusb() */
void
usbd_start_next(usbd_pipe_handle pipe)
{
usbd_xfer_handle xfer;
usbd_status err;
SPLUSBCHECK;
#ifdef DIAGNOSTIC
if (pipe == NULL) {
printf("usbd_start_next: pipe == NULL\n");
return;
}
if (pipe->methods == NULL || pipe->methods->start == NULL) {
printf("usbd_start_next: pipe=%p no start method\n", pipe);
return;
}
#endif
/* Get next request in queue. */
xfer = SIMPLEQ_FIRST(&pipe->queue);
DPRINTFN(5, ("usbd_start_next: pipe=%p, xfer=%p\n", pipe, xfer));
if (xfer == NULL) {
pipe->running = 0;
} else {
err = pipe->methods->start(xfer);
if (err != USBD_IN_PROGRESS) {
printf("usbd_start_next: error=%d\n", err);
pipe->running = 0;
/* XXX do what? */
}
}
}
usbd_status
usbd_do_request(usbd_device_handle dev, usb_device_request_t *req, void *data)
{
return (usbd_do_request_flags(dev, req, data, 0, 0,
USBD_DEFAULT_TIMEOUT));
}
usbd_status
usbd_do_request_flags(usbd_device_handle dev, usb_device_request_t *req,
void *data, u_int16_t flags, int *actlen, u_int32_t timo)
{
return (usbd_do_request_flags_pipe(dev, dev->default_pipe, req, data,
flags, actlen, timo));
}
usbd_status
usbd_do_request_flags_pipe(usbd_device_handle dev, usbd_pipe_handle pipe,
usb_device_request_t *req, void *data, u_int16_t flags, int *actlen,
u_int32_t timeout)
{
usbd_xfer_handle xfer;
usbd_status err;
#ifdef DIAGNOSTIC
if (dev->bus->intr_context) {
printf("usbd_do_request: not in process context\n");
return (USBD_INVAL);
}
#endif
xfer = usbd_alloc_xfer(dev);
if (xfer == NULL)
return (USBD_NOMEM);
usbd_setup_default_xfer(xfer, dev, 0, timeout, req, data,
UGETW(req->wLength), flags, 0);
xfer->pipe = pipe;
err = usbd_sync_transfer(xfer);
#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
if (xfer->actlen > xfer->length)
DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x"
"%02x val=%d index=%d rlen=%d length=%d actlen=%d\n",
dev->address, xfer->request.bmRequestType,
xfer->request.bRequest, UGETW(xfer->request.wValue),
UGETW(xfer->request.wIndex), UGETW(xfer->request.wLength),
xfer->length, xfer->actlen));
#endif
if (actlen != NULL)
*actlen = xfer->actlen;
if (err == USBD_STALLED) {
/*
* The control endpoint has stalled. Control endpoints
* should not halt, but some may do so anyway so clear
* any halt condition.
*/
usb_device_request_t treq;
usb_status_t status;
u_int16_t s;
usbd_status nerr;
treq.bmRequestType = UT_READ_ENDPOINT;
treq.bRequest = UR_GET_STATUS;
USETW(treq.wValue, 0);
USETW(treq.wIndex, 0);
USETW(treq.wLength, sizeof(usb_status_t));
usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT,
&treq, &status,sizeof(usb_status_t), 0, 0);
nerr = usbd_sync_transfer(xfer);
if (nerr)
goto bad;
s = UGETW(status.wStatus);
DPRINTF(("usbd_do_request: status = 0x%04x\n", s));
if (!(s & UES_HALT))
goto bad;
treq.bmRequestType = UT_WRITE_ENDPOINT;
treq.bRequest = UR_CLEAR_FEATURE;
USETW(treq.wValue, UF_ENDPOINT_HALT);
USETW(treq.wIndex, 0);
USETW(treq.wLength, 0);
usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT,
&treq, &status, 0, 0, 0);
nerr = usbd_sync_transfer(xfer);
if (nerr)
goto bad;
}
bad:
usbd_free_xfer(xfer);
return (err);
}
void
usbd_do_request_async_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
usbd_status status)
{
#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
if (xfer->actlen > xfer->length)
DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x"
"%02x val=%d index=%d rlen=%d length=%d actlen=%d\n",
xfer->pipe->device->address, xfer->request.bmRequestType,
xfer->request.bRequest, UGETW(xfer->request.wValue),
UGETW(xfer->request.wIndex), UGETW(xfer->request.wLength),
xfer->length, xfer->actlen));
#endif
usbd_free_xfer(xfer);
}
/*
* Execute a request without waiting for completion.
* Can be used from interrupt context.
*/
usbd_status
usbd_do_request_async(usbd_device_handle dev, usb_device_request_t *req,
void *data)
{
usbd_xfer_handle xfer;
usbd_status err;
xfer = usbd_alloc_xfer(dev);
if (xfer == NULL)
return (USBD_NOMEM);
usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, req,
data, UGETW(req->wLength), 0, usbd_do_request_async_cb);
err = usbd_transfer(xfer);
if (err != USBD_IN_PROGRESS) {
usbd_free_xfer(xfer);
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
const struct usbd_quirks *
usbd_get_quirks(usbd_device_handle dev)
{
#ifdef DIAGNOSTIC
if (dev == NULL) {
printf("usbd_get_quirks: dev == NULL\n");
return 0;
}
#endif
return (dev->quirks);
}
/* XXX do periodic free() of free list */
/*
* Called from keyboard driver when in polling mode.
*/
void
usbd_dopoll(usbd_interface_handle iface)
{
iface->device->bus->methods->do_poll(iface->device->bus);
}
void
usbd_set_polling(usbd_device_handle dev, int on)
{
if (on)
dev->bus->use_polling++;
else
dev->bus->use_polling--;
/* When polling we need to make sure there is nothing pending to do. */
if (dev->bus->use_polling)
dev->bus->methods->soft_intr(dev->bus);
}
usb_endpoint_descriptor_t *
usbd_get_endpoint_descriptor(usbd_interface_handle iface, u_int8_t address)
{
struct usbd_endpoint *ep;
int i;
for (i = 0; i < iface->idesc->bNumEndpoints; i++) {
ep = &iface->endpoints[i];
if (ep->edesc->bEndpointAddress == address)
return (iface->endpoints[i].edesc);
}
return (0);
}
/*
* usbd_ratecheck() can limit the number of error messages that occurs.
* When a device is unplugged it may take up to 0.25s for the hub driver
* to notice it. If the driver continuosly tries to do I/O operations
* this can generate a large number of messages.
*/
int
usbd_ratecheck(struct timeval *last)
{
static struct timeval errinterval = { 0, 250000 }; /* 0.25 s*/
return (ratecheck(last, &errinterval));
}
/*
* Search for a vendor/product pair in an array. The item size is
* given as an argument.
*/
const struct usb_devno *
usb_match_device(const struct usb_devno *tbl, u_int nentries, u_int sz,
u_int16_t vendor, u_int16_t product)
{
while (nentries-- > 0) {
u_int16_t tproduct = tbl->ud_product;
if (tbl->ud_vendor == vendor &&
(tproduct == product || tproduct == USB_PRODUCT_ANY))
return (tbl);
tbl = (const struct usb_devno *)((const char *)tbl + sz);
}
return (NULL);
}
void
usb_desc_iter_init(usbd_device_handle dev, usbd_desc_iter_t *iter)
{
const usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
iter->cur = (const uByte *)cd;
iter->end = (const uByte *)cd + UGETW(cd->wTotalLength);
}
const usb_descriptor_t *
usb_desc_iter_next(usbd_desc_iter_t *iter)
{
const usb_descriptor_t *desc;
if (iter->cur + sizeof(usb_descriptor_t) >= iter->end) {
if (iter->cur != iter->end)
printf("usb_desc_iter_next: bad descriptor\n");
return NULL;
}
desc = (const usb_descriptor_t *)iter->cur;
if (desc->bLength == 0) {
printf("usb_desc_iter_next: descriptor length = 0\n");
return NULL;
}
iter->cur += desc->bLength;
if (iter->cur > iter->end) {
printf("usb_desc_iter_next: descriptor length too large\n");
return NULL;
}
return desc;
}