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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/sys/dev/usb/usbdi.c
1999-01-07 23:07:57 +00:00

1336 lines
29 KiB
C

/* $NetBSD: usbdi.c,v 1.19 1999/01/03 01:00:56 augustss Exp $ */
/* FreeBSD $Id$ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@carlstedt.se) at
* Carlstedt Research & Technology.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#else
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#endif
#include <sys/malloc.h>
#include <sys/proc.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdivar.h>
#if defined(__FreeBSD__)
#include "usb_if.h"
#endif
#ifdef USB_DEBUG
#define DPRINTF(x) if (usbdebug) printf x
#define DPRINTFN(n,x) if (usbdebug>(n)) printf x
extern int usbdebug;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
static usbd_status usbd_ar_pipe __P((usbd_pipe_handle pipe));
static usbd_status usbd_ar_iface __P((usbd_interface_handle iface));
static void usbd_transfer_cb __P((usbd_request_handle reqh));
static void usbd_sync_transfer_cb __P((usbd_request_handle reqh));
static usbd_status usbd_do_transfer __P((usbd_request_handle reqh));
void usbd_do_request_async_cb
__P((usbd_request_handle, usbd_private_handle, usbd_status));
static SIMPLEQ_HEAD(, usbd_request) usbd_free_requests;
#if defined(__FreeBSD__)
#define USB_CDEV_MAJOR 108
extern struct cdevsw usb_cdevsw;
#endif
usbd_status
usbd_open_pipe(iface, address, flags, pipe)
usbd_interface_handle iface;
u_int8_t address;
u_int8_t flags;
usbd_pipe_handle *pipe;
{
usbd_pipe_handle p;
struct usbd_endpoint *ep;
usbd_status r;
int i;
if (iface->state != USBD_INTERFACE_ACTIVE)
return (USBD_INTERFACE_NOT_ACTIVE);
for (i = 0; i < iface->idesc->bNumEndpoints; i++) {
ep = &iface->endpoints[i];
if (ep->edesc->bEndpointAddress == address)
goto found;
}
return (USBD_BAD_ADDRESS);
found:
if ((flags & USBD_EXCLUSIVE_USE) &&
ep->refcnt != 0)
return (USBD_IN_USE);
r = usbd_setup_pipe(iface->device, iface, ep, &p);
if (r != USBD_NORMAL_COMPLETION)
return (r);
LIST_INSERT_HEAD(&iface->pipes, p, next);
*pipe = p;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_open_pipe_intr(iface, address, flags, pipe, priv, buffer, length, cb)
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 length;
usbd_callback cb;
{
usbd_status r;
usbd_request_handle reqh;
usbd_pipe_handle ipipe;
reqh = usbd_alloc_request();
if (reqh == 0)
return (USBD_NOMEM);
r = usbd_open_pipe(iface, address, USBD_EXCLUSIVE_USE, &ipipe);
if (r != USBD_NORMAL_COMPLETION)
goto bad1;
r = usbd_setup_request(reqh, ipipe, priv, buffer, length,
USBD_XFER_IN | flags, USBD_NO_TIMEOUT, cb);
if (r != USBD_NORMAL_COMPLETION)
goto bad2;
ipipe->intrreqh = reqh;
r = usbd_transfer(reqh);
*pipe = ipipe;
if (r != USBD_IN_PROGRESS)
goto bad3;
return (USBD_NORMAL_COMPLETION);
bad3:
ipipe->intrreqh = 0;
bad2:
usbd_close_pipe(ipipe);
bad1:
usbd_free_request(reqh);
return r;
}
usbd_status
usbd_open_pipe_iso(iface, address, flags, pipe, priv, bufsize, nbuf, cb)
usbd_interface_handle iface;
u_int8_t address;
u_int8_t flags;
usbd_pipe_handle *pipe;
usbd_private_handle priv;
u_int32_t bufsize;
u_int32_t nbuf;
usbd_callback cb;
{
usbd_status r;
usbd_pipe_handle p;
r = usbd_open_pipe(iface, address, USBD_EXCLUSIVE_USE, &p);
if (r != USBD_NORMAL_COMPLETION)
return (r);
if (!p->methods->isobuf) {
usbd_close_pipe(p);
return (USBD_INVAL);
}
r = p->methods->isobuf(p, bufsize, nbuf);
if (r != USBD_NORMAL_COMPLETION) {
usbd_close_pipe(p);
return (r);
}
*pipe = p;
return r;
}
usbd_status
usbd_close_pipe(pipe)
usbd_pipe_handle pipe;
{
if (pipe->iface->state != USBD_INTERFACE_ACTIVE)
return (USBD_INTERFACE_NOT_ACTIVE);
if (--pipe->refcnt != 0)
return (USBD_NORMAL_COMPLETION);
if (SIMPLEQ_FIRST(&pipe->queue) != 0)
return (USBD_PENDING_REQUESTS);
LIST_REMOVE(pipe, next);
pipe->endpoint->refcnt--;
pipe->methods->close(pipe);
if (pipe->intrreqh)
usbd_free_request(pipe->intrreqh);
free(pipe, M_USB);
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_transfer(reqh)
usbd_request_handle reqh;
{
reqh->xfercb = usbd_transfer_cb;
return (usbd_do_transfer(reqh));
}
static usbd_status
usbd_do_transfer(reqh)
usbd_request_handle reqh;
{
usbd_pipe_handle pipe = reqh->pipe;
DPRINTFN(10,("usbd_do_transfer: reqh=%p\n", reqh));
reqh->done = 0;
return (pipe->methods->transfer(reqh));
}
#if 0
static usbd_status
usbd_do_transfer(reqh)
usbd_request_handle reqh;
{
usbd_pipe_handle pipe = reqh->pipe;
DPRINTFN(10,("usbd_do_transfer: reqh=%p\n", reqh));
reqh->done = 0;
s = splusb();
if (pipe->state == USBD_PIPE_IDLE ||
(iface && iface->state == USBD_INTERFACE_IDLE)) {
splx(s);
return (USBD_IS_IDLE);
}
SIMPLEQ_INSERT_TAIL(&pipe->queue, reqh, next);
if (pipe->state == USBD_PIPE_ACTIVE &&
(!iface || iface->state == USBD_INTERFACE_ACTIVE)) {
r = usbd_start(pipe);
} else
r = USBD_NOT_STARTED;
splx(s);
return (r);
}
static usbd_status
usbd_start(pipe)
usbd_pipe_handle pipe;
{
usbd_request_handle reqh;
DPRINTFN(5, ("usbd_start: pipe=%p, running=%d\n",
pipe, pipe->running));
if (pipe->running)
return (USBD_IN_PROGRESS);
reqh = SIMPLEQ_FIRST(&pipe->queue);
if (!reqh) {
/* XXX */
printf("usbd_start: pipe empty!\n");
pipe->running = 0;
return (USBD_XXX);
}
SIMPLEQ_REMOVE_HEAD(&pipe->queue, reqh, next);
pipe->running = 1;
pipe->curreqh = reqh;
return (pipe->methods->transfer(reqh));
}
#endif
usbd_request_handle
usbd_alloc_request()
{
usbd_request_handle reqh;
reqh = SIMPLEQ_FIRST(&usbd_free_requests);
if (reqh)
SIMPLEQ_REMOVE_HEAD(&usbd_free_requests, reqh, next);
else
reqh = malloc(sizeof(*reqh), M_USB, M_NOWAIT);
if (!reqh)
return (0);
memset(reqh, 0, sizeof *reqh);
return (reqh);
}
usbd_status
usbd_free_request(reqh)
usbd_request_handle reqh;
{
SIMPLEQ_INSERT_HEAD(&usbd_free_requests, reqh, next);
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_setup_request(reqh, pipe, priv, buffer, length, flags, timeout, callback)
usbd_request_handle reqh;
usbd_pipe_handle pipe;
usbd_private_handle priv;
void *buffer;
u_int32_t length;
u_int16_t flags;
u_int32_t timeout;
void (*callback) __P((usbd_request_handle,
usbd_private_handle,
usbd_status));
{
reqh->pipe = pipe;
reqh->isreq = 0;
reqh->priv = priv;
reqh->buffer = buffer;
reqh->length = length;
reqh->actlen = 0;
reqh->flags = flags;
reqh->callback = callback;
reqh->status = USBD_NOT_STARTED;
reqh->retries = 1;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_setup_device_request(reqh, req)
usbd_request_handle reqh;
usb_device_request_t *req;
{
reqh->isreq = 1;
reqh->request = *req;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_setup_default_request(reqh, dev, priv, timeout, req, buffer,
length, flags, callback)
usbd_request_handle reqh;
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;
void (*callback) __P((usbd_request_handle,
usbd_private_handle,
usbd_status));
{
reqh->pipe = dev->default_pipe;
reqh->priv = priv;
reqh->buffer = buffer;
reqh->length = length;
reqh->actlen = 0;
reqh->flags = flags;
reqh->timeout = timeout;
reqh->status = USBD_NOT_STARTED;
reqh->callback = callback;
reqh->request = *req;
reqh->isreq = 1;
reqh->retries = 1;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_set_request_timeout(reqh, timeout)
usbd_request_handle reqh;
u_int32_t timeout;
{
reqh->timeout = timeout;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_get_request_status(reqh, priv, buffer, count, status)
usbd_request_handle reqh;
usbd_private_handle *priv;
void **buffer;
u_int32_t *count;
usbd_status *status;
{
*priv = reqh->priv;
*buffer = reqh->buffer;
*count = reqh->actlen;
*status = reqh->status;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_request_device_data(reqh, req)
usbd_request_handle reqh;
usb_device_request_t *req;
{
if (!reqh->isreq)
return (USBD_INVAL);
*req = reqh->request;
return (USBD_NORMAL_COMPLETION);
}
#if 0
usb_descriptor_t *
usbd_get_descriptor(iface, desc_type)
usbd_interface_handle *iface;
u_int8_t desc_type;
XX
#endif
usb_config_descriptor_t *
usbd_get_config_descriptor(dev)
usbd_device_handle dev;
{
return (dev->cdesc);
}
usb_interface_descriptor_t *
usbd_get_interface_descriptor(iface)
usbd_interface_handle iface;
{
return (iface->idesc);
}
usb_device_descriptor_t *
usbd_get_device_descriptor(dev)
usbd_device_handle dev;
{
return (&dev->ddesc);
}
usb_endpoint_descriptor_t *
usbd_interface2endpoint_descriptor(iface, index)
usbd_interface_handle iface;
u_int8_t index;
{
if (index >= iface->idesc->bNumEndpoints)
return (0);
return (iface->endpoints[index].edesc);
}
usbd_status
usbd_set_configuration(dev, conf)
usbd_device_handle dev;
u_int8_t conf;
{
return usbd_set_config_no(dev, conf, 0);
}
usbd_status
usbd_retry_request(reqh, retry_count)
usbd_request_handle reqh;
u_int32_t retry_count;
{
usbd_status r;
r = usbd_set_pipe_state(reqh->pipe, USBD_PIPE_ACTIVE);
if (r != USBD_NORMAL_COMPLETION)
return (r);
reqh->retries = retry_count;
return (usbd_transfer(reqh));
}
usbd_status
usbd_abort_pipe(pipe)
usbd_pipe_handle pipe;
{
usbd_status r;
int s, st;
if (pipe->iface->state != USBD_INTERFACE_ACTIVE)
return (USBD_INTERFACE_NOT_ACTIVE);
s = splusb();
st = pipe->state;
r = usbd_ar_pipe(pipe);
pipe->state = st;
splx(s);
return (r);
}
usbd_status
usbd_abort_interface(iface)
usbd_interface_handle iface;
{
usbd_status r;
int s, st;
s = splusb();
st = iface->state;
r = usbd_ar_iface(iface);
iface->state = st;
splx(s);
return (r);
}
usbd_status
usbd_reset_pipe(pipe)
usbd_pipe_handle pipe;
{
usbd_status r;
int s;
if (pipe->iface->state != USBD_INTERFACE_ACTIVE)
return (USBD_INTERFACE_NOT_ACTIVE);
s = splusb();
r = usbd_ar_pipe(pipe);
/* XXX anything else */
pipe->state = USBD_PIPE_ACTIVE;
splx(s);
return (r);
}
usbd_status
usbd_reset_interface(iface)
usbd_interface_handle iface;
{
usbd_status r;
int s;
s = splusb();
r = usbd_ar_iface(iface);
/* XXX anything else */
iface->state = USBD_INTERFACE_ACTIVE;
splx(s);
return (r);
}
usbd_status
usbd_clear_endpoint_stall(pipe)
usbd_pipe_handle pipe;
{
usbd_device_handle dev = pipe->device;
usb_device_request_t req;
usbd_status r;
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);
r = usbd_do_request(dev, &req, 0);
#if 0
XXX should we do this?
if (r == USBD_NORMAL_COMPLETION) {
pipe->state = USBD_PIPE_ACTIVE;
/* XXX activate pipe */
}
#endif
return (r);
}
usbd_status
usbd_clear_endpoint_stall_async(pipe)
usbd_pipe_handle pipe;
{
usbd_device_handle dev = pipe->device;
usb_device_request_t req;
usbd_status r;
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);
r = usbd_do_request_async(dev, &req, 0);
return (r);
}
usbd_status
usbd_set_pipe_state(pipe, state)
usbd_pipe_handle pipe;
usbd_pipe_state state;
{
int s;
usbd_status r;
usbd_request_handle reqh;
if (pipe->iface->state != USBD_INTERFACE_ACTIVE)
return (USBD_INTERFACE_NOT_ACTIVE);
if (state != USBD_PIPE_ACTIVE &&
state != USBD_PIPE_STALLED &&
state != USBD_PIPE_IDLE)
return (USBD_INVAL);
pipe->state = state;
r = USBD_NORMAL_COMPLETION;
if (state == USBD_PIPE_ACTIVE) {
s = splusb();
if (!pipe->running) {
reqh = SIMPLEQ_FIRST(&pipe->queue);
if (reqh != 0) {
pipe->running = 1;
splx(s);
r = pipe->methods->start(reqh);
} else
splx(s);
} else
splx(s);
}
return (r);
}
usbd_status
usbd_get_pipe_state(pipe, state, endpoint_state, request_count)
usbd_pipe_handle pipe;
usbd_pipe_state *state;
u_int32_t *endpoint_state;
u_int32_t *request_count;
{
int n;
usbd_request_handle r;
*state = pipe->state;
*endpoint_state = pipe->endpoint->state;
for (r = SIMPLEQ_FIRST(&pipe->queue), n = 0;
r != 0;
r = SIMPLEQ_NEXT(r, next), n++)
;
*request_count = n;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_set_interface_state(iface, state)
usbd_interface_handle iface;
usbd_interface_state state;
{
int ps;
usbd_pipe_handle p;
if (state == USBD_INTERFACE_ACTIVE)
ps = USBD_PIPE_ACTIVE;
else if (state == USBD_INTERFACE_STALLED)
ps = USBD_PIPE_STALLED;
else if (state == USBD_INTERFACE_IDLE)
ps = USBD_PIPE_IDLE;
else
return (USBD_INVAL);
iface->state = USBD_INTERFACE_ACTIVE; /* to allow setting the pipe */
for (p = LIST_FIRST(&iface->pipes); p != 0; p = LIST_NEXT(p, next))
usbd_set_pipe_state(p, ps);
iface->state = state;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_get_interface_state(iface, state)
usbd_interface_handle iface;
usbd_interface_state *state;
{
*state = iface->state;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_get_device_state(dev, state)
usbd_device_handle dev;
usbd_device_state *state;
{
*state = dev->state;
return (USBD_NORMAL_COMPLETION);
}
#if 0
usbd_status
usbd_set_device_state(dev, state)
usbd_device_handle dev;
usbd_device_state state;
X
#endif
usbd_status
usbd_device_address(dev, address)
usbd_device_handle dev;
u_int8_t *address;
{
*address = dev->address;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_endpoint_address(pipe, address)
usbd_pipe_handle pipe;
u_int8_t *address;
{
*address = pipe->endpoint->edesc->bEndpointAddress;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_endpoint_count(iface, count)
usbd_interface_handle iface;
u_int8_t *count;
{
*count = iface->idesc->bNumEndpoints;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_interface_count(dev, count)
usbd_device_handle dev;
u_int8_t *count;
{
if (!dev->cdesc)
return (USBD_NOT_CONFIGURED);
*count = dev->cdesc->bNumInterface;
return (USBD_NORMAL_COMPLETION);
}
#if defined(__NetBSD__)
u_int8_t
usbd_bus_count()
{
return (usb_bus_count());
}
usbd_status
usbd_get_bus_handle(index, bus)
u_int8_t index;
usbd_bus_handle *bus;
{
return (usb_get_bus_handle(index, bus));
}
#endif
usbd_status
usbd_get_root_hub(bus, dev)
usbd_bus_handle bus;
usbd_device_handle *dev;
{
*dev = bus->root_hub;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_port_count(dev, nports)
usbd_device_handle dev;
u_int8_t *nports;
{
if (dev->hub == 0)
return (USBD_INVAL);
*nports = dev->hub->hubdesc.bNbrPorts;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_hub2device_handle(dev, port, devp)
usbd_device_handle dev;
u_int8_t port;
usbd_device_handle *devp;
{
if (dev->hub == 0 || port >= dev->hub->hubdesc.bNbrPorts ||
dev->hub->ports[port].device == 0)
return (USBD_INVAL);
*devp = dev->hub->ports[port].device;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_request2pipe_handle(reqh, pipe)
usbd_request_handle reqh;
usbd_pipe_handle *pipe;
{
*pipe = reqh->pipe;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_pipe2interface_handle(pipe, iface)
usbd_pipe_handle pipe;
usbd_interface_handle *iface;
{
*iface = pipe->iface;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_interface2device_handle(iface, dev)
usbd_interface_handle iface;
usbd_device_handle *dev;
{
*dev = iface->device;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_device2bus_handle(dev, bus)
usbd_device_handle dev;
usbd_bus_handle *bus;
{
*bus = dev->bus;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_device2interface_handle(dev, ifaceno, iface)
usbd_device_handle dev;
u_int8_t ifaceno;
usbd_interface_handle *iface;
{
if (!dev->cdesc)
return (USBD_NOT_CONFIGURED);
if (ifaceno >= dev->cdesc->bNumInterface)
return (USBD_INVAL);
*iface = &dev->ifaces[ifaceno];
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_set_interface_private_handle(iface, priv)
usbd_interface_handle iface;
usbd_private_handle priv;
{
iface->priv = priv;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_get_interface_private_handle(iface, priv)
usbd_interface_handle iface;
usbd_private_handle *priv;
{
*priv = iface->priv;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_reference_pipe(pipe)
usbd_pipe_handle pipe;
{
pipe->refcnt++;
return (USBD_NORMAL_COMPLETION);
}
usbd_status
usbd_dereference_pipe(pipe)
usbd_pipe_handle pipe;
{
pipe->refcnt--;
return (USBD_NORMAL_COMPLETION);
}
usbd_lock_token
usbd_lock()
{
return (splusb());
}
void
usbd_unlock(tok)
usbd_lock_token tok;
{
splx(tok);
}
/* XXXX use altno */
usbd_status
usbd_set_interface(iface, altidx)
usbd_interface_handle iface;
int altidx;
{
usb_device_request_t req;
usbd_status r;
if (LIST_FIRST(&iface->pipes) != 0)
return (USBD_IN_USE);
if (iface->endpoints)
free(iface->endpoints, M_USB);
iface->endpoints = 0;
iface->idesc = 0;
iface->state = USBD_INTERFACE_IDLE;
r = usbd_fill_iface_data(iface->device, iface->index, altidx);
if (r != USBD_NORMAL_COMPLETION)
return (r);
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(cdesc, ifaceno)
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(iface)
usbd_interface_handle iface;
{
return (iface->altindex);
}
usbd_status
usbd_get_interface(iface, aiface)
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(). */
static usbd_status
usbd_ar_pipe(pipe)
usbd_pipe_handle pipe;
{
usbd_request_handle reqh;
for (;;) {
reqh = SIMPLEQ_FIRST(&pipe->queue);
if (reqh == 0)
break;
SIMPLEQ_REMOVE_HEAD(&pipe->queue, reqh, next);
reqh->status = USBD_CANCELLED;
if (reqh->callback)
reqh->callback(reqh, reqh->priv, reqh->status);
}
return (USBD_NORMAL_COMPLETION);
}
/* Dequeue all interface operations, called at splusb(). */
static usbd_status
usbd_ar_iface(iface)
usbd_interface_handle iface;
{
usbd_pipe_handle p;
usbd_status r, ret = USBD_NORMAL_COMPLETION;
for (p = LIST_FIRST(&iface->pipes); p != 0; p = LIST_NEXT(p, next)) {
r = usbd_ar_pipe(p);
if (r != USBD_NORMAL_COMPLETION)
ret = r;
}
return (ret);
}
static int usbd_global_init_done = 0;
void
usbd_init()
{
#if defined(__FreeBSD__)
dev_t dev;
#endif
if (!usbd_global_init_done) {
usbd_global_init_done = 1;
SIMPLEQ_INIT(&usbd_free_requests);
#if defined(__FreeBSD__)
dev = makedev(USB_CDEV_MAJOR, 0);
cdevsw_add(&dev, &usb_cdevsw, NULL);
#endif
}
}
static void
usbd_transfer_cb(reqh)
usbd_request_handle reqh;
{
usbd_pipe_handle pipe = reqh->pipe;
/* Count completed transfers. */
++pipe->device->bus->stats.requests
[pipe->endpoint->edesc->bmAttributes & UE_XFERTYPE];
/* XXX check retry count */
reqh->done = 1;
if (reqh->status == USBD_NORMAL_COMPLETION &&
reqh->actlen < reqh->length &&
!(reqh->flags & USBD_SHORT_XFER_OK)) {
DPRINTFN(-1, ("usbd_transfer_cb: short xfer %d<%d (bytes)\n",
reqh->actlen, reqh->length));
reqh->status = USBD_SHORT_XFER;
}
if (reqh->callback)
reqh->callback(reqh, reqh->priv, reqh->status);
}
static void
usbd_sync_transfer_cb(reqh)
usbd_request_handle reqh;
{
usbd_transfer_cb(reqh);
if (!reqh->pipe->device->bus->use_polling)
wakeup(reqh);
}
/* Like usbd_transfer(), but waits for completion. */
usbd_status
usbd_sync_transfer(reqh)
usbd_request_handle reqh;
{
usbd_status r;
int s;
reqh->xfercb = usbd_sync_transfer_cb;
r = usbd_do_transfer(reqh);
if (r != USBD_IN_PROGRESS)
return (r);
s = splusb();
if (!reqh->done) {
if (reqh->pipe->device->bus->use_polling)
panic("usbd_sync_transfer: not done\n");
tsleep(reqh, PRIBIO, "usbsyn", 0);
}
splx(s);
return (reqh->status);
}
usbd_status
usbd_do_request(dev, req, data)
usbd_device_handle dev;
usb_device_request_t *req;
void *data;
{
return (usbd_do_request_flags(dev, req, data, 0, 0));
}
usbd_status
usbd_do_request_flags(dev, req, data, flags, actlen)
usbd_device_handle dev;
usb_device_request_t *req;
void *data;
u_int16_t flags;
int *actlen;
{
usbd_request_handle reqh;
usbd_status r;
#ifdef DIAGNOSTIC
if (!curproc) {
printf("usbd_do_request: not in process context\n");
return (USBD_XXX);
}
#endif
reqh = usbd_alloc_request();
if (reqh == 0)
return (USBD_NOMEM);
r = usbd_setup_default_request(
reqh, dev, 0, USBD_DEFAULT_TIMEOUT, req, data,
UGETW(req->wLength), flags, 0);
if (r != USBD_NORMAL_COMPLETION)
goto bad;
r = usbd_sync_transfer(reqh);
#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
if (reqh->actlen > reqh->length)
printf("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, reqh->request.bmRequestType,
reqh->request.bRequest, UGETW(reqh->request.wValue),
UGETW(reqh->request.wIndex),
UGETW(reqh->request.wLength),
reqh->length, reqh->actlen);
#endif
if (actlen)
*actlen = reqh->actlen;
if (r == 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 nr;
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));
nr = usbd_setup_default_request(
reqh, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status,
sizeof(usb_status_t), 0, 0);
if (nr != USBD_NORMAL_COMPLETION)
goto bad;
nr = usbd_sync_transfer(reqh);
if (nr != USBD_NORMAL_COMPLETION)
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);
nr = usbd_setup_default_request(
reqh, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status,
0, 0, 0);
if (nr != USBD_NORMAL_COMPLETION)
goto bad;
nr = usbd_sync_transfer(reqh);
if (nr != USBD_NORMAL_COMPLETION)
goto bad;
}
bad:
usbd_free_request(reqh);
return (r);
}
void
usbd_do_request_async_cb(reqh, priv, status)
usbd_request_handle reqh;
usbd_private_handle priv;
usbd_status status;
{
#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
if (reqh->actlen > reqh->length)
printf("usbd_do_request: overrun addr=%d type=0x%02x req=0x"
"%02x val=%d index=%d rlen=%d length=%d actlen=%d\n",
reqh->pipe->device->address,
reqh->request.bmRequestType,
reqh->request.bRequest, UGETW(reqh->request.wValue),
UGETW(reqh->request.wIndex),
UGETW(reqh->request.wLength),
reqh->length, reqh->actlen);
#endif
usbd_free_request(reqh);
}
/*
* Execute a request without waiting for completion.
* Can be used from interrupt context.
*/
usbd_status
usbd_do_request_async(dev, req, data)
usbd_device_handle dev;
usb_device_request_t *req;
void *data;
{
usbd_request_handle reqh;
usbd_status r;
reqh = usbd_alloc_request();
if (reqh == 0)
return (USBD_NOMEM);
r = usbd_setup_default_request(
reqh, dev, 0, USBD_DEFAULT_TIMEOUT, req, data,
UGETW(req->wLength), 0, usbd_do_request_async_cb);
if (r != USBD_NORMAL_COMPLETION) {
usbd_free_request(reqh);
return (r);
}
r = usbd_transfer(reqh);
if (r != USBD_IN_PROGRESS)
return (r);
return (USBD_NORMAL_COMPLETION);
}
struct usbd_quirks *
usbd_get_quirks(dev)
usbd_device_handle dev;
{
return (dev->quirks);
}
void
usbd_set_disco(p, hdl, data)
usbd_pipe_handle p;
void (*hdl) __P((void *));
void *data;
{
p->disco = hdl;
p->discoarg = data;
}
/* XXX do periodic free() of free list */
/*
* Called from keyboard driver when in polling mode.
*/
void
usbd_dopoll(iface)
usbd_interface_handle iface;
{
iface->device->bus->do_poll(iface->device->bus);
}
void
usbd_set_polling(iface, on)
usbd_interface_handle iface;
int on;
{
iface->device->bus->use_polling = on;
}
usb_endpoint_descriptor_t *
usbd_get_endpoint_descriptor(iface, address)
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);
}
#if defined(__FreeBSD__)
void
usbd_print_child(device_t parent, device_t child)
{
/*
struct usb_softc *sc = device_get_softc(child);
*/
printf(" at %s%d", device_get_name(parent), device_get_unit(parent));
/* XXX How do we get to the usbd_device_handle???
usbd_device_handle dev = invalidadosch;
printf(" addr %d", dev->addr);
if (bootverbose) {
if (dev->lowspeed)
printf(", lowspeed");
if (dev->self_powered)
printf(", self powered");
else
printf(", %dmA", dev->power);
printf(", config %d", dev->config);
}
*/
}
/* Reconfigure all the USB busses in the system. */
int
usbd_driver_load(module_t mod, int what, void *arg)
{
devclass_t usb_devclass = devclass_find("usb");
devclass_t ugen_devclass = devclass_find("ugen");
device_t *devlist;
int devcount;
int error;
switch (what) {
case MOD_LOAD:
case MOD_UNLOAD:
if (!usb_devclass)
return 0; /* just ignore call */
if (ugen_devclass) {
/* detach devices from generic driver if possible */
error = devclass_get_devices(ugen_devclass, &devlist,
&devcount);
if (!error)
for (devcount--; devcount >= 0; devcount--)
(void)DEVICE_DETACH(devlist[devcount]);
}
error = devclass_get_devices(usb_devclass, &devlist, &devcount);
if (error)
return 0; /* XXX maybe transient, or error? */
for (devcount--; devcount >= 0; devcount--)
USB_RECONFIGURE(devlist[devcount]);
free(devlist, M_TEMP);
return 0;
}
return 0; /* nothing to do by us */
}
/* Set the description of the device including a malloc and copy. */
void
usbd_device_set_desc(device_t device, char *devinfo)
{
size_t l;
char *desc;
if ( devinfo ) {
l = strlen(devinfo);
desc = malloc(l+1, M_USB, M_NOWAIT);
if (desc)
memcpy(desc, devinfo, l+1);
} else
desc = NULL;
device_set_desc(device, desc);
}
/*
* A static buffer is a loss if this routine is used from an interrupt,
* but it's not fatal.
*/
char *
usbd_devname(bdevice *bdev)
{
static char buf[20];
sprintf(buf, "%s%d", device_get_name(*bdev), device_get_unit(*bdev));
return (buf);
}
#endif