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freebsd-skq/sys/dev/usb/usb_device.c
thompsa e287ad4395 MFp4 //depot/projects/usb@159677 
Remove redundant locking.

Submitted by:	Hans Petter Selasky
2009-04-05 18:18:36 +00:00

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/* $FreeBSD$ */
/*-
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <dev/usb/usb_mfunc.h>
#include <dev/usb/usb_error.h>
#include <dev/usb/usb.h>
#include <dev/usb/usb_ioctl.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR usb2_debug
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_transfer.h>
#include <dev/usb/usb_parse.h>
#include <dev/usb/usb_request.h>
#include <dev/usb/usb_dynamic.h>
#include <dev/usb/usb_hub.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_mbuf.h>
#include <dev/usb/usb_msctest.h>
#if USB_HAVE_UGEN
#include <dev/usb/usb_dev.h>
#include <dev/usb/usb_generic.h>
#endif
#include <dev/usb/quirk/usb_quirk.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
/* function prototypes */
static void usb2_fill_pipe_data(struct usb2_device *, uint8_t,
struct usb2_endpoint_descriptor *, struct usb2_pipe *);
static void usb2_free_pipe_data(struct usb2_device *, uint8_t, uint8_t);
static void usb2_free_iface_data(struct usb2_device *);
static void usb2_detach_device_sub(struct usb2_device *, device_t *,
uint8_t);
static uint8_t usb2_probe_and_attach_sub(struct usb2_device *,
struct usb2_attach_arg *);
static void usb2_init_attach_arg(struct usb2_device *,
struct usb2_attach_arg *);
static void usb2_suspend_resume_sub(struct usb2_device *, device_t,
uint8_t);
static void usb2_clear_stall_proc(struct usb2_proc_msg *_pm);
#if USB_HAVE_STRINGS
static void usb2_check_strings(struct usb2_device *);
#endif
static usb2_error_t usb2_fill_iface_data(struct usb2_device *, uint8_t,
uint8_t);
#if USB_HAVE_UGEN
static void usb2_notify_addq(const char *type, struct usb2_device *);
static void usb2_fifo_free_wrap(struct usb2_device *, uint8_t, uint8_t);
static struct cdev *usb2_make_dev(struct usb2_device *, int, int);
static void usb2_cdev_create(struct usb2_device *);
static void usb2_cdev_free(struct usb2_device *);
static void usb2_cdev_cleanup(void *);
#endif
/* This variable is global to allow easy access to it: */
int usb2_template = 0;
SYSCTL_INT(_hw_usb2, OID_AUTO, template, CTLFLAG_RW,
&usb2_template, 0, "Selected USB device side template");
/*------------------------------------------------------------------------*
* usb2_get_pipe_by_addr
*
* This function searches for an USB pipe by endpoint address and
* direction.
*
* Returns:
* NULL: Failure
* Else: Success
*------------------------------------------------------------------------*/
struct usb2_pipe *
usb2_get_pipe_by_addr(struct usb2_device *udev, uint8_t ea_val)
{
struct usb2_pipe *pipe = udev->pipes;
struct usb2_pipe *pipe_end = udev->pipes + USB_EP_MAX;
enum {
EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR),
};
/*
* According to the USB specification not all bits are used
* for the endpoint address. Keep defined bits only:
*/
ea_val &= EA_MASK;
/*
* Iterate accross all the USB pipes searching for a match
* based on the endpoint address:
*/
for (; pipe != pipe_end; pipe++) {
if (pipe->edesc == NULL) {
continue;
}
/* do the mask and check the value */
if ((pipe->edesc->bEndpointAddress & EA_MASK) == ea_val) {
goto found;
}
}
/*
* The default pipe is always present and is checked separately:
*/
if ((udev->default_pipe.edesc) &&
((udev->default_pipe.edesc->bEndpointAddress & EA_MASK) == ea_val)) {
pipe = &udev->default_pipe;
goto found;
}
return (NULL);
found:
return (pipe);
}
/*------------------------------------------------------------------------*
* usb2_get_pipe
*
* This function searches for an USB pipe based on the information
* given by the passed "struct usb2_config" pointer.
*
* Return values:
* NULL: No match.
* Else: Pointer to "struct usb2_pipe".
*------------------------------------------------------------------------*/
struct usb2_pipe *
usb2_get_pipe(struct usb2_device *udev, uint8_t iface_index,
const struct usb2_config *setup)
{
struct usb2_pipe *pipe = udev->pipes;
struct usb2_pipe *pipe_end = udev->pipes + USB_EP_MAX;
uint8_t index = setup->ep_index;
uint8_t ea_mask;
uint8_t ea_val;
uint8_t type_mask;
uint8_t type_val;
DPRINTFN(10, "udev=%p iface_index=%d address=0x%x "
"type=0x%x dir=0x%x index=%d\n",
udev, iface_index, setup->endpoint,
setup->type, setup->direction, setup->ep_index);
/* setup expected endpoint direction mask and value */
if (setup->direction == UE_DIR_ANY) {
/* match any endpoint direction */
ea_mask = 0;
ea_val = 0;
} else {
/* match the given endpoint direction */
ea_mask = (UE_DIR_IN | UE_DIR_OUT);
ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT));
}
/* setup expected endpoint address */
if (setup->endpoint == UE_ADDR_ANY) {
/* match any endpoint address */
} else {
/* match the given endpoint address */
ea_mask |= UE_ADDR;
ea_val |= (setup->endpoint & UE_ADDR);
}
/* setup expected endpoint type */
if (setup->type == UE_BULK_INTR) {
/* this will match BULK and INTERRUPT endpoints */
type_mask = 2;
type_val = 2;
} else if (setup->type == UE_TYPE_ANY) {
/* match any endpoint type */
type_mask = 0;
type_val = 0;
} else {
/* match the given endpoint type */
type_mask = UE_XFERTYPE;
type_val = (setup->type & UE_XFERTYPE);
}
/*
* Iterate accross all the USB pipes searching for a match
* based on the endpoint address. Note that we are searching
* the pipes from the beginning of the "udev->pipes" array.
*/
for (; pipe != pipe_end; pipe++) {
if ((pipe->edesc == NULL) ||
(pipe->iface_index != iface_index)) {
continue;
}
/* do the masks and check the values */
if (((pipe->edesc->bEndpointAddress & ea_mask) == ea_val) &&
((pipe->edesc->bmAttributes & type_mask) == type_val)) {
if (!index--) {
goto found;
}
}
}
/*
* Match against default pipe last, so that "any pipe", "any
* address" and "any direction" returns the first pipe of the
* interface. "iface_index" and "direction" is ignored:
*/
if ((udev->default_pipe.edesc) &&
((udev->default_pipe.edesc->bEndpointAddress & ea_mask) == ea_val) &&
((udev->default_pipe.edesc->bmAttributes & type_mask) == type_val) &&
(!index)) {
pipe = &udev->default_pipe;
goto found;
}
return (NULL);
found:
return (pipe);
}
/*------------------------------------------------------------------------*
* usb2_interface_count
*
* This function stores the number of USB interfaces excluding
* alternate settings, which the USB config descriptor reports into
* the unsigned 8-bit integer pointed to by "count".
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
usb2_error_t
usb2_interface_count(struct usb2_device *udev, uint8_t *count)
{
if (udev->cdesc == NULL) {
*count = 0;
return (USB_ERR_NOT_CONFIGURED);
}
*count = udev->cdesc->bNumInterface;
return (USB_ERR_NORMAL_COMPLETION);
}
/*------------------------------------------------------------------------*
* usb2_fill_pipe_data
*
* This function will initialise the USB pipe structure pointed to by
* the "pipe" argument.
*------------------------------------------------------------------------*/
static void
usb2_fill_pipe_data(struct usb2_device *udev, uint8_t iface_index,
struct usb2_endpoint_descriptor *edesc, struct usb2_pipe *pipe)
{
bzero(pipe, sizeof(*pipe));
(udev->bus->methods->pipe_init) (udev, edesc, pipe);
if (pipe->methods == NULL) {
/* the pipe is invalid: just return */
return;
}
/* initialise USB pipe structure */
pipe->edesc = edesc;
pipe->iface_index = iface_index;
TAILQ_INIT(&pipe->pipe_q.head);
pipe->pipe_q.command = &usb2_pipe_start;
/* clear stall, if any */
if (udev->bus->methods->clear_stall) {
USB_BUS_LOCK(udev->bus);
(udev->bus->methods->clear_stall) (udev, pipe);
USB_BUS_UNLOCK(udev->bus);
}
}
/*------------------------------------------------------------------------*
* usb2_free_pipe_data
*
* This function will free USB pipe data for the given interface
* index. Hence we do not have any dynamic allocations we simply clear
* "pipe->edesc" to indicate that the USB pipe structure can be
* reused. The pipes belonging to the given interface should not be in
* use when this function is called and no check is performed to
* prevent this.
*------------------------------------------------------------------------*/
static void
usb2_free_pipe_data(struct usb2_device *udev,
uint8_t iface_index, uint8_t iface_mask)
{
struct usb2_pipe *pipe = udev->pipes;
struct usb2_pipe *pipe_end = udev->pipes + USB_EP_MAX;
while (pipe != pipe_end) {
if ((pipe->iface_index & iface_mask) == iface_index) {
/* free pipe */
pipe->edesc = NULL;
}
pipe++;
}
}
/*------------------------------------------------------------------------*
* usb2_pipe_foreach
*
* This function will iterate all the USB endpoints except the control
* endpoint. This function is NULL safe.
*
* Return values:
* NULL: End of USB pipes
* Else: Pointer to next USB pipe
*------------------------------------------------------------------------*/
struct usb2_pipe *
usb2_pipe_foreach(struct usb2_device *udev, struct usb2_pipe *pipe)
{
struct usb2_pipe *pipe_end = udev->pipes + USB_EP_MAX;
/* be NULL safe */
if (udev == NULL)
return (NULL);
/* get next pipe */
if (pipe == NULL)
pipe = udev->pipes;
else
pipe++;
/* find next allocated pipe */
while (pipe != pipe_end) {
if (pipe->edesc != NULL)
return (pipe);
pipe++;
}
return (NULL);
}
/*------------------------------------------------------------------------*
* usb2_fill_iface_data
*
* This function will fill in interface data and allocate USB pipes
* for all the endpoints that belong to the given interface. This
* function is typically called when setting the configuration or when
* setting an alternate interface.
*------------------------------------------------------------------------*/
static usb2_error_t
usb2_fill_iface_data(struct usb2_device *udev,
uint8_t iface_index, uint8_t alt_index)
{
struct usb2_interface *iface = usb2_get_iface(udev, iface_index);
struct usb2_pipe *pipe;
struct usb2_pipe *pipe_end;
struct usb2_interface_descriptor *id;
struct usb2_endpoint_descriptor *ed = NULL;
struct usb2_descriptor *desc;
uint8_t nendpt;
if (iface == NULL) {
return (USB_ERR_INVAL);
}
DPRINTFN(5, "iface_index=%d alt_index=%d\n",
iface_index, alt_index);
sx_assert(udev->default_sx + 1, SA_LOCKED);
pipe = udev->pipes;
pipe_end = udev->pipes + USB_EP_MAX;
/*
* Check if any USB pipes on the given USB interface are in
* use:
*/
while (pipe != pipe_end) {
if ((pipe->edesc != NULL) &&
(pipe->iface_index == iface_index) &&
(pipe->refcount != 0)) {
return (USB_ERR_IN_USE);
}
pipe++;
}
pipe = &udev->pipes[0];
id = usb2_find_idesc(udev->cdesc, iface_index, alt_index);
if (id == NULL) {
return (USB_ERR_INVAL);
}
/*
* Free old pipes after we know that an interface descriptor exists,
* if any.
*/
usb2_free_pipe_data(udev, iface_index, 0 - 1);
/* Setup USB interface structure */
iface->idesc = id;
iface->alt_index = alt_index;
iface->parent_iface_index = USB_IFACE_INDEX_ANY;
nendpt = id->bNumEndpoints;
DPRINTFN(5, "found idesc nendpt=%d\n", nendpt);
desc = (void *)id;
while (nendpt--) {
DPRINTFN(11, "endpt=%d\n", nendpt);
while ((desc = usb2_desc_foreach(udev->cdesc, desc))) {
if ((desc->bDescriptorType == UDESC_ENDPOINT) &&
(desc->bLength >= sizeof(*ed))) {
goto found;
}
if (desc->bDescriptorType == UDESC_INTERFACE) {
break;
}
}
goto error;
found:
ed = (void *)desc;
/* find a free pipe */
while (pipe != pipe_end) {
if (pipe->edesc == NULL) {
/* pipe is free */
usb2_fill_pipe_data(udev, iface_index, ed, pipe);
break;
}
pipe++;
}
}
return (USB_ERR_NORMAL_COMPLETION);
error:
/* passed end, or bad desc */
DPRINTFN(0, "%s: bad descriptor(s), addr=%d!\n",
__FUNCTION__, udev->address);
/* free old pipes if any */
usb2_free_pipe_data(udev, iface_index, 0 - 1);
return (USB_ERR_INVAL);
}
/*------------------------------------------------------------------------*
* usb2_free_iface_data
*
* This function will free all USB interfaces and USB pipes belonging
* to an USB device.
*------------------------------------------------------------------------*/
static void
usb2_free_iface_data(struct usb2_device *udev)
{
struct usb2_interface *iface = udev->ifaces;
struct usb2_interface *iface_end = udev->ifaces + USB_IFACE_MAX;
/* mtx_assert() */
#if USB_HAVE_COMPAT_LINUX
/* free Linux compat device, if any */
if (udev->linux_dev) {
usb_linux_free_device(udev->linux_dev);
udev->linux_dev = NULL;
}
#endif
/* free all pipes, if any */
usb2_free_pipe_data(udev, 0, 0);
/* free all interfaces, if any */
while (iface != iface_end) {
iface->idesc = NULL;
iface->alt_index = 0;
iface->parent_iface_index = USB_IFACE_INDEX_ANY;
iface++;
}
/* free "cdesc" after "ifaces", if any */
if (udev->cdesc) {
free(udev->cdesc, M_USB);
udev->cdesc = NULL;
}
/* set unconfigured state */
udev->curr_config_no = USB_UNCONFIG_NO;
udev->curr_config_index = USB_UNCONFIG_INDEX;
}
/*------------------------------------------------------------------------*
* usb2_set_config_index
*
* This function selects configuration by index, independent of the
* actual configuration number. This function should not be used by
* USB drivers.
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
usb2_error_t
usb2_set_config_index(struct usb2_device *udev, uint8_t index)
{
struct usb2_status ds;
struct usb2_hub_descriptor hd;
struct usb2_config_descriptor *cdp;
uint16_t power;
uint16_t max_power;
uint8_t nifc;
uint8_t selfpowered;
uint8_t do_unlock;
usb2_error_t err;
DPRINTFN(6, "udev=%p index=%d\n", udev, index);
/* automatic locking */
if (sx_xlocked(udev->default_sx + 1)) {
do_unlock = 0;
} else {
do_unlock = 1;
sx_xlock(udev->default_sx + 1);
}
/* detach all interface drivers */
usb2_detach_device(udev, USB_IFACE_INDEX_ANY, 1);
#if USB_HAVE_UGEN
/* free all FIFOs except control endpoint FIFOs */
usb2_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, 0);
/* free all configuration data structures */
usb2_cdev_free(udev);
#endif
usb2_free_iface_data(udev);
if (index == USB_UNCONFIG_INDEX) {
/*
* Leave unallocated when unconfiguring the
* device. "usb2_free_iface_data()" will also reset
* the current config number and index.
*/
err = usb2_req_set_config(udev, NULL, USB_UNCONFIG_NO);
goto done;
}
/* get the full config descriptor */
err = usb2_req_get_config_desc_full(udev,
NULL, &cdp, M_USB, index);
if (err) {
goto done;
}
/* set the new config descriptor */
udev->cdesc = cdp;
if (cdp->bNumInterface > USB_IFACE_MAX) {
DPRINTFN(0, "too many interfaces: %d\n", cdp->bNumInterface);
cdp->bNumInterface = USB_IFACE_MAX;
}
/* Figure out if the device is self or bus powered. */
selfpowered = 0;
if ((!udev->flags.uq_bus_powered) &&
(cdp->bmAttributes & UC_SELF_POWERED) &&
(udev->flags.usb2_mode == USB_MODE_HOST)) {
/* May be self powered. */
if (cdp->bmAttributes & UC_BUS_POWERED) {
/* Must ask device. */
if (udev->flags.uq_power_claim) {
/*
* HUB claims to be self powered, but isn't.
* It seems that the power status can be
* determined by the HUB characteristics.
*/
err = usb2_req_get_hub_descriptor
(udev, NULL, &hd, 1);
if (err) {
DPRINTFN(0, "could not read "
"HUB descriptor: %s\n",
usb2_errstr(err));
} else if (UGETW(hd.wHubCharacteristics) &
UHD_PWR_INDIVIDUAL) {
selfpowered = 1;
}
DPRINTF("characteristics=0x%04x\n",
UGETW(hd.wHubCharacteristics));
} else {
err = usb2_req_get_device_status
(udev, NULL, &ds);
if (err) {
DPRINTFN(0, "could not read "
"device status: %s\n",
usb2_errstr(err));
} else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) {
selfpowered = 1;
}
DPRINTF("status=0x%04x \n",
UGETW(ds.wStatus));
}
} else
selfpowered = 1;
}
DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, "
"selfpowered=%d, power=%d\n",
udev, cdp,
udev->address, cdp->bConfigurationValue, cdp->bmAttributes,
selfpowered, cdp->bMaxPower * 2);
/* Check if we have enough power. */
power = cdp->bMaxPower * 2;
if (udev->parent_hub) {
max_power = udev->parent_hub->hub->portpower;
} else {
max_power = USB_MAX_POWER;
}
if (power > max_power) {
DPRINTFN(0, "power exceeded %d > %d\n", power, max_power);
err = USB_ERR_NO_POWER;
goto done;
}
/* Only update "self_powered" in USB Host Mode */
if (udev->flags.usb2_mode == USB_MODE_HOST) {
udev->flags.self_powered = selfpowered;
}
udev->power = power;
udev->curr_config_no = cdp->bConfigurationValue;
udev->curr_config_index = index;
/* Set the actual configuration value. */
err = usb2_req_set_config(udev, NULL, cdp->bConfigurationValue);
if (err) {
goto done;
}
/* Allocate and fill interface data. */
nifc = cdp->bNumInterface;
while (nifc--) {
err = usb2_fill_iface_data(udev, nifc, 0);
if (err) {
goto done;
}
}
#if USB_HAVE_UGEN
/* create device nodes for each endpoint */
usb2_cdev_create(udev);
#endif
done:
DPRINTF("error=%s\n", usb2_errstr(err));
if (err) {
#if USB_HAVE_UGEN
usb2_cdev_free(udev);
#endif
usb2_free_iface_data(udev);
}
if (do_unlock) {
sx_unlock(udev->default_sx + 1);
}
return (err);
}
/*------------------------------------------------------------------------*
* usb2_set_alt_interface_index
*
* This function will select an alternate interface index for the
* given interface index. The interface should not be in use when this
* function is called. That means there should not be any open USB
* transfers. Else an error is returned. If the alternate setting is
* already set this function will simply return success. This function
* is called in Host mode and Device mode!
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
usb2_error_t
usb2_set_alt_interface_index(struct usb2_device *udev,
uint8_t iface_index, uint8_t alt_index)
{
struct usb2_interface *iface = usb2_get_iface(udev, iface_index);
usb2_error_t err;
uint8_t do_unlock;
/* automatic locking */
if (sx_xlocked(udev->default_sx + 1)) {
do_unlock = 0;
} else {
do_unlock = 1;
sx_xlock(udev->default_sx + 1);
}
if (iface == NULL) {
err = USB_ERR_INVAL;
goto done;
}
if (udev->flags.usb2_mode == USB_MODE_DEVICE) {
usb2_detach_device(udev, iface_index, 1);
} else {
if (iface->alt_index == alt_index) {
/*
* Optimise away duplicate setting of
* alternate setting in USB Host Mode!
*/
err = 0;
goto done;
}
}
#if USB_HAVE_UGEN
/*
* Free all generic FIFOs for this interface, except control
* endpoint FIFOs:
*/
usb2_fifo_free_wrap(udev, iface_index, 0);
#endif
err = usb2_fill_iface_data(udev, iface_index, alt_index);
if (err) {
goto done;
}
err = usb2_req_set_alt_interface_no(udev, NULL, iface_index,
iface->idesc->bAlternateSetting);
done:
if (do_unlock) {
sx_unlock(udev->default_sx + 1);
}
return (err);
}
/*------------------------------------------------------------------------*
* usb2_set_endpoint_stall
*
* This function is used to make a BULK or INTERRUPT endpoint
* send STALL tokens.
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
usb2_error_t
usb2_set_endpoint_stall(struct usb2_device *udev, struct usb2_pipe *pipe,
uint8_t do_stall)
{
struct usb2_xfer *xfer;
uint8_t et;
uint8_t was_stalled;
if (pipe == NULL) {
/* nothing to do */
DPRINTF("Cannot find endpoint\n");
/*
* Pretend that the clear or set stall request is
* successful else some USB host stacks can do
* strange things, especially when a control endpoint
* stalls.
*/
return (0);
}
et = (pipe->edesc->bmAttributes & UE_XFERTYPE);
if ((et != UE_BULK) &&
(et != UE_INTERRUPT)) {
/*
* Should not stall control
* nor isochronous endpoints.
*/
DPRINTF("Invalid endpoint\n");
return (0);
}
USB_BUS_LOCK(udev->bus);
/* store current stall state */
was_stalled = pipe->is_stalled;
/* check for no change */
if (was_stalled && do_stall) {
/* if the pipe is already stalled do nothing */
USB_BUS_UNLOCK(udev->bus);
DPRINTF("No change\n");
return (0);
}
/* set stalled state */
pipe->is_stalled = 1;
if (do_stall || (!was_stalled)) {
if (!was_stalled) {
/* lookup the current USB transfer, if any */
xfer = pipe->pipe_q.curr;
} else {
xfer = NULL;
}
/*
* If "xfer" is non-NULL the "set_stall" method will
* complete the USB transfer like in case of a timeout
* setting the error code "USB_ERR_STALLED".
*/
(udev->bus->methods->set_stall) (udev, xfer, pipe);
}
if (!do_stall) {
pipe->toggle_next = 0; /* reset data toggle */
pipe->is_stalled = 0; /* clear stalled state */
(udev->bus->methods->clear_stall) (udev, pipe);
/* start up the current or next transfer, if any */
usb2_command_wrapper(&pipe->pipe_q, pipe->pipe_q.curr);
}
USB_BUS_UNLOCK(udev->bus);
return (0);
}
/*------------------------------------------------------------------------*
* usb2_reset_iface_endpoints - used in USB device side mode
*------------------------------------------------------------------------*/
usb2_error_t
usb2_reset_iface_endpoints(struct usb2_device *udev, uint8_t iface_index)
{
struct usb2_pipe *pipe;
struct usb2_pipe *pipe_end;
usb2_error_t err;
pipe = udev->pipes;
pipe_end = udev->pipes + USB_EP_MAX;
for (; pipe != pipe_end; pipe++) {
if ((pipe->edesc == NULL) ||
(pipe->iface_index != iface_index)) {
continue;
}
/* simulate a clear stall from the peer */
err = usb2_set_endpoint_stall(udev, pipe, 0);
if (err) {
/* just ignore */
}
}
return (0);
}
/*------------------------------------------------------------------------*
* usb2_detach_device_sub
*
* This function will try to detach an USB device. If it fails a panic
* will result.
*------------------------------------------------------------------------*/
static void
usb2_detach_device_sub(struct usb2_device *udev, device_t *ppdev,
uint8_t free_subdev)
{
device_t dev;
int err;
if (!free_subdev) {
*ppdev = NULL;
} else if (*ppdev) {
/*
* NOTE: It is important to clear "*ppdev" before deleting
* the child due to some device methods being called late
* during the delete process !
*/
dev = *ppdev;
*ppdev = NULL;
device_printf(dev, "at %s, port %d, addr %d "
"(disconnected)\n",
device_get_nameunit(udev->parent_dev),
udev->port_no, udev->address);
if (device_is_attached(dev)) {
if (udev->flags.suspended) {
err = DEVICE_RESUME(dev);
if (err) {
device_printf(dev, "Resume failed!\n");
}
}
if (device_detach(dev)) {
goto error;
}
}
if (device_delete_child(udev->parent_dev, dev)) {
goto error;
}
}
return;
error:
/* Detach is not allowed to fail in the USB world */
panic("An USB driver would not detach!\n");
}
/*------------------------------------------------------------------------*
* usb2_detach_device
*
* The following function will detach the matching interfaces.
* This function is NULL safe.
*------------------------------------------------------------------------*/
void
usb2_detach_device(struct usb2_device *udev, uint8_t iface_index,
uint8_t free_subdev)
{
struct usb2_interface *iface;
uint8_t i;
uint8_t do_unlock;
if (udev == NULL) {
/* nothing to do */
return;
}
DPRINTFN(4, "udev=%p\n", udev);
/* automatic locking */
if (sx_xlocked(udev->default_sx + 1)) {
do_unlock = 0;
} else {
do_unlock = 1;
sx_xlock(udev->default_sx + 1);
}
/*
* First detach the child to give the child's detach routine a
* chance to detach the sub-devices in the correct order.
* Then delete the child using "device_delete_child()" which
* will detach all sub-devices from the bottom and upwards!
*/
if (iface_index != USB_IFACE_INDEX_ANY) {
i = iface_index;
iface_index = i + 1;
} else {
i = 0;
iface_index = USB_IFACE_MAX;
}
/* do the detach */
for (; i != iface_index; i++) {
iface = usb2_get_iface(udev, i);
if (iface == NULL) {
/* looks like the end of the USB interfaces */
break;
}
usb2_detach_device_sub(udev, &iface->subdev, free_subdev);
}
if (do_unlock) {
sx_unlock(udev->default_sx + 1);
}
}
/*------------------------------------------------------------------------*
* usb2_probe_and_attach_sub
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static uint8_t
usb2_probe_and_attach_sub(struct usb2_device *udev,
struct usb2_attach_arg *uaa)
{
struct usb2_interface *iface;
device_t dev;
int err;
iface = uaa->iface;
if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) {
/* leave interface alone */
return (0);
}
dev = iface->subdev;
if (dev) {
/* clean up after module unload */
if (device_is_attached(dev)) {
/* already a device there */
return (0);
}
/* clear "iface->subdev" as early as possible */
iface->subdev = NULL;
if (device_delete_child(udev->parent_dev, dev)) {
/*
* Panic here, else one can get a double call
* to device_detach(). USB devices should
* never fail on detach!
*/
panic("device_delete_child() failed!\n");
}
}
if (uaa->temp_dev == NULL) {
/* create a new child */
uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1);
if (uaa->temp_dev == NULL) {
device_printf(udev->parent_dev,
"Device creation failed!\n");
return (1); /* failure */
}
device_set_ivars(uaa->temp_dev, uaa);
device_quiet(uaa->temp_dev);
}
/*
* Set "subdev" before probe and attach so that "devd" gets
* the information it needs.
*/
iface->subdev = uaa->temp_dev;
if (device_probe_and_attach(iface->subdev) == 0) {
/*
* The USB attach arguments are only available during probe
* and attach !
*/
uaa->temp_dev = NULL;
device_set_ivars(iface->subdev, NULL);
if (udev->flags.suspended) {
err = DEVICE_SUSPEND(iface->subdev);
device_printf(iface->subdev, "Suspend failed\n");
}
return (0); /* success */
} else {
/* No USB driver found */
iface->subdev = NULL;
}
return (1); /* failure */
}
/*------------------------------------------------------------------------*
* usb2_set_parent_iface
*
* Using this function will lock the alternate interface setting on an
* interface. It is typically used for multi interface drivers. In USB
* device side mode it is assumed that the alternate interfaces all
* have the same endpoint descriptors. The default parent index value
* is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not
* locked.
*------------------------------------------------------------------------*/
void
usb2_set_parent_iface(struct usb2_device *udev, uint8_t iface_index,
uint8_t parent_index)
{
struct usb2_interface *iface;
iface = usb2_get_iface(udev, iface_index);
if (iface) {
iface->parent_iface_index = parent_index;
}
}
static void
usb2_init_attach_arg(struct usb2_device *udev,
struct usb2_attach_arg *uaa)
{
bzero(uaa, sizeof(*uaa));
uaa->device = udev;
uaa->usb2_mode = udev->flags.usb2_mode;
uaa->port = udev->port_no;
uaa->info.idVendor = UGETW(udev->ddesc.idVendor);
uaa->info.idProduct = UGETW(udev->ddesc.idProduct);
uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice);
uaa->info.bDeviceClass = udev->ddesc.bDeviceClass;
uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass;
uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol;
uaa->info.bConfigIndex = udev->curr_config_index;
uaa->info.bConfigNum = udev->curr_config_no;
}
/*------------------------------------------------------------------------*
* usb2_probe_and_attach
*
* This function is called from "uhub_explore_sub()",
* "usb2_handle_set_config()" and "usb2_handle_request()".
*
* Returns:
* 0: Success
* Else: A control transfer failed
*------------------------------------------------------------------------*/
usb2_error_t
usb2_probe_and_attach(struct usb2_device *udev, uint8_t iface_index)
{
struct usb2_attach_arg uaa;
struct usb2_interface *iface;
uint8_t i;
uint8_t j;
uint8_t do_unlock;
if (udev == NULL) {
DPRINTF("udev == NULL\n");
return (USB_ERR_INVAL);
}
/* automatic locking */
if (sx_xlocked(udev->default_sx + 1)) {
do_unlock = 0;
} else {
do_unlock = 1;
sx_xlock(udev->default_sx + 1);
}
if (udev->curr_config_index == USB_UNCONFIG_INDEX) {
/* do nothing - no configuration has been set */
goto done;
}
/* setup USB attach arguments */
usb2_init_attach_arg(udev, &uaa);
/* Check if only one interface should be probed: */
if (iface_index != USB_IFACE_INDEX_ANY) {
i = iface_index;
j = i + 1;
} else {
i = 0;
j = USB_IFACE_MAX;
}
/* Do the probe and attach */
for (; i != j; i++) {
iface = usb2_get_iface(udev, i);
if (iface == NULL) {
/*
* Looks like the end of the USB
* interfaces !
*/
DPRINTFN(2, "end of interfaces "
"at %u\n", i);
break;
}
if (iface->idesc == NULL) {
/* no interface descriptor */
continue;
}
uaa.iface = iface;
uaa.info.bInterfaceClass =
iface->idesc->bInterfaceClass;
uaa.info.bInterfaceSubClass =
iface->idesc->bInterfaceSubClass;
uaa.info.bInterfaceProtocol =
iface->idesc->bInterfaceProtocol;
uaa.info.bIfaceIndex = i;
uaa.info.bIfaceNum =
iface->idesc->bInterfaceNumber;
uaa.use_generic = 0;
DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n",
uaa.info.bInterfaceClass,
uaa.info.bInterfaceSubClass,
uaa.info.bInterfaceProtocol,
uaa.info.bIfaceIndex,
uaa.info.bIfaceNum);
/* try specific interface drivers first */
if (usb2_probe_and_attach_sub(udev, &uaa)) {
/* ignore */
}
/* try generic interface drivers last */
uaa.use_generic = 1;
if (usb2_probe_and_attach_sub(udev, &uaa)) {
/* ignore */
}
}
if (uaa.temp_dev) {
/* remove the last created child; it is unused */
if (device_delete_child(udev->parent_dev, uaa.temp_dev)) {
DPRINTFN(0, "device delete child failed!\n");
}
}
done:
if (do_unlock) {
sx_unlock(udev->default_sx + 1);
}
return (0);
}
/*------------------------------------------------------------------------*
* usb2_suspend_resume_sub
*
* This function is called when the suspend or resume methods should
* be executed on an USB device.
*------------------------------------------------------------------------*/
static void
usb2_suspend_resume_sub(struct usb2_device *udev, device_t dev, uint8_t do_suspend)
{
int err;
if (dev == NULL) {
return;
}
if (!device_is_attached(dev)) {
return;
}
if (do_suspend) {
err = DEVICE_SUSPEND(dev);
} else {
err = DEVICE_RESUME(dev);
}
if (err) {
device_printf(dev, "%s failed!\n",
do_suspend ? "Suspend" : "Resume");
}
}
/*------------------------------------------------------------------------*
* usb2_suspend_resume
*
* The following function will suspend or resume the USB device.
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
usb2_error_t
usb2_suspend_resume(struct usb2_device *udev, uint8_t do_suspend)
{
struct usb2_interface *iface;
uint8_t i;
if (udev == NULL) {
/* nothing to do */
return (0);
}
DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend);
sx_assert(udev->default_sx + 1, SA_LOCKED);
USB_BUS_LOCK(udev->bus);
/* filter the suspend events */
if (udev->flags.suspended == do_suspend) {
USB_BUS_UNLOCK(udev->bus);
/* nothing to do */
return (0);
}
udev->flags.suspended = do_suspend;
USB_BUS_UNLOCK(udev->bus);
/* do the suspend or resume */
for (i = 0; i != USB_IFACE_MAX; i++) {
iface = usb2_get_iface(udev, i);
if (iface == NULL) {
/* looks like the end of the USB interfaces */
break;
}
usb2_suspend_resume_sub(udev, iface->subdev, do_suspend);
}
return (0);
}
/*------------------------------------------------------------------------*
* usb2_clear_stall_proc
*
* This function performs generic USB clear stall operations.
*------------------------------------------------------------------------*/
static void
usb2_clear_stall_proc(struct usb2_proc_msg *_pm)
{
struct usb2_clear_stall_msg *pm = (void *)_pm;
struct usb2_device *udev = pm->udev;
/* Change lock */
USB_BUS_UNLOCK(udev->bus);
mtx_lock(udev->default_mtx);
/* Start clear stall callback */
usb2_transfer_start(udev->default_xfer[1]);
/* Change lock */
mtx_unlock(udev->default_mtx);
USB_BUS_LOCK(udev->bus);
}
/*------------------------------------------------------------------------*
* usb2_alloc_device
*
* This function allocates a new USB device. This function is called
* when a new device has been put in the powered state, but not yet in
* the addressed state. Get initial descriptor, set the address, get
* full descriptor and get strings.
*
* Return values:
* 0: Failure
* Else: Success
*------------------------------------------------------------------------*/
struct usb2_device *
usb2_alloc_device(device_t parent_dev, struct usb2_bus *bus,
struct usb2_device *parent_hub, uint8_t depth,
uint8_t port_index, uint8_t port_no, uint8_t speed, uint8_t usb2_mode)
{
struct usb2_attach_arg uaa;
struct usb2_device *udev;
struct usb2_device *adev;
struct usb2_device *hub;
uint8_t *scratch_ptr;
uint32_t scratch_size;
usb2_error_t err;
uint8_t device_index;
DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, "
"port_index=%u, port_no=%u, speed=%u, usb2_mode=%u\n",
parent_dev, bus, parent_hub, depth, port_index, port_no,
speed, usb2_mode);
/*
* Find an unused device index. In USB Host mode this is the
* same as the device address.
*
* Device index zero is not used and device index 1 should
* always be the root hub.
*/
for (device_index = USB_ROOT_HUB_ADDR;
(device_index != bus->devices_max) &&
(bus->devices[device_index] != NULL);
device_index++) /* nop */;
if (device_index == bus->devices_max) {
device_printf(bus->bdev,
"No free USB device index for new device!\n");
return (NULL);
}
if (depth > 0x10) {
device_printf(bus->bdev,
"Invalid device depth!\n");
return (NULL);
}
udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO);
if (udev == NULL) {
return (NULL);
}
/* initialise our SX-lock */
sx_init(udev->default_sx, "0123456789ABCDEF - USB device SX lock" + depth);
/* initialise our SX-lock */
sx_init(udev->default_sx + 1, "0123456789ABCDEF - USB config SX lock" + depth);
usb2_cv_init(udev->default_cv, "WCTRL");
usb2_cv_init(udev->default_cv + 1, "UGONE");
/* initialise our mutex */
mtx_init(udev->default_mtx, "USB device mutex", NULL, MTX_DEF);
/* initialise generic clear stall */
udev->cs_msg[0].hdr.pm_callback = &usb2_clear_stall_proc;
udev->cs_msg[0].udev = udev;
udev->cs_msg[1].hdr.pm_callback = &usb2_clear_stall_proc;
udev->cs_msg[1].udev = udev;
/* initialise some USB device fields */
udev->parent_hub = parent_hub;
udev->parent_dev = parent_dev;
udev->port_index = port_index;
udev->port_no = port_no;
udev->depth = depth;
udev->bus = bus;
udev->address = USB_START_ADDR; /* default value */
udev->plugtime = (usb2_ticks_t)ticks;
/*
* We need to force the power mode to "on" because there are plenty
* of USB devices out there that do not work very well with
* automatic suspend and resume!
*/
udev->power_mode = USB_POWER_MODE_ON;
udev->pwr_save.last_xfer_time = ticks;
/* we are not ready yet */
udev->refcount = 1;
/* set up default endpoint descriptor */
udev->default_ep_desc.bLength = sizeof(udev->default_ep_desc);
udev->default_ep_desc.bDescriptorType = UDESC_ENDPOINT;
udev->default_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
udev->default_ep_desc.bmAttributes = UE_CONTROL;
udev->default_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET;
udev->default_ep_desc.wMaxPacketSize[1] = 0;
udev->default_ep_desc.bInterval = 0;
udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
udev->speed = speed;
udev->flags.usb2_mode = usb2_mode;
/* speed combination should be checked by the parent HUB */
hub = udev->parent_hub;
/* search for our High Speed USB HUB, if any */
adev = udev;
hub = udev->parent_hub;
while (hub) {
if (hub->speed == USB_SPEED_HIGH) {
udev->hs_hub_addr = hub->address;
udev->hs_port_no = adev->port_no;
break;
}
adev = hub;
hub = hub->parent_hub;
}
/* init the default pipe */
usb2_fill_pipe_data(udev, 0,
&udev->default_ep_desc,
&udev->default_pipe);
/* set device index */
udev->device_index = device_index;
#if USB_HAVE_UGEN
/* Create ugen name */
snprintf(udev->ugen_name, sizeof(udev->ugen_name),
USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev),
device_index);
LIST_INIT(&udev->pd_list);
/* Create the control endpoint device */
udev->default_dev = usb2_make_dev(udev, 0, FREAD|FWRITE);
/* Create a link from /dev/ugenX.X to the default endpoint */
make_dev_alias(udev->default_dev, udev->ugen_name);
#endif
if (udev->flags.usb2_mode == USB_MODE_HOST) {
err = usb2_req_set_address(udev, NULL, device_index);
/* This is the new USB device address from now on */
udev->address = device_index;
/*
* We ignore any set-address errors, hence there are
* buggy USB devices out there that actually receive
* the SETUP PID, but manage to set the address before
* the STATUS stage is ACK'ed. If the device responds
* to the subsequent get-descriptor at the new
* address, then we know that the set-address command
* was successful.
*/
if (err) {
DPRINTFN(0, "set address %d failed "
"(ignored)\n", udev->address);
}
/* allow device time to set new address */
usb2_pause_mtx(NULL,
USB_MS_TO_TICKS(USB_SET_ADDRESS_SETTLE));
} else {
/* We are not self powered */
udev->flags.self_powered = 0;
/* Set unconfigured state */
udev->curr_config_no = USB_UNCONFIG_NO;
udev->curr_config_index = USB_UNCONFIG_INDEX;
/* Setup USB descriptors */
err = (usb2_temp_setup_by_index_p) (udev, usb2_template);
if (err) {
DPRINTFN(0, "setting up USB template failed maybe the USB "
"template module has not been loaded\n");
goto done;
}
}
/*
* Get the first 8 bytes of the device descriptor !
*
* NOTE: "usb2_do_request" will check the device descriptor
* next time we do a request to see if the maximum packet size
* changed! The 8 first bytes of the device descriptor
* contains the maximum packet size to use on control endpoint
* 0. If this value is different from "USB_MAX_IPACKET" a new
* USB control request will be setup!
*/
err = usb2_req_get_desc(udev, NULL, NULL, &udev->ddesc,
USB_MAX_IPACKET, USB_MAX_IPACKET, 0, UDESC_DEVICE, 0, 0);
if (err) {
DPRINTFN(0, "getting device descriptor "
"at addr %d failed!\n", udev->address);
/* XXX try to re-enumerate the device */
err = usb2_req_re_enumerate(udev, NULL);
if (err) {
goto done;
}
}
DPRINTF("adding unit addr=%d, rev=%02x, class=%d, "
"subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n",
udev->address, UGETW(udev->ddesc.bcdUSB),
udev->ddesc.bDeviceClass,
udev->ddesc.bDeviceSubClass,
udev->ddesc.bDeviceProtocol,
udev->ddesc.bMaxPacketSize,
udev->ddesc.bLength,
udev->speed);
/* get the full device descriptor */
err = usb2_req_get_device_desc(udev, NULL, &udev->ddesc);
if (err) {
DPRINTF("addr=%d, getting full desc failed\n",
udev->address);
goto done;
}
/*
* Setup temporary USB attach args so that we can figure out some
* basic quirks for this device.
*/
usb2_init_attach_arg(udev, &uaa);
if (usb2_test_quirk(&uaa, UQ_BUS_POWERED)) {
udev->flags.uq_bus_powered = 1;
}
if (usb2_test_quirk(&uaa, UQ_POWER_CLAIM)) {
udev->flags.uq_power_claim = 1;
}
if (usb2_test_quirk(&uaa, UQ_NO_STRINGS)) {
udev->flags.no_strings = 1;
}
/*
* Workaround for buggy USB devices.
*
* It appears that some string-less USB chips will crash and
* disappear if any attempts are made to read any string
* descriptors.
*
* Try to detect such chips by checking the strings in the USB
* device descriptor. If no strings are present there we
* simply disable all USB strings.
*/
scratch_ptr = udev->bus->scratch[0].data;
scratch_size = sizeof(udev->bus->scratch[0].data);
if (udev->ddesc.iManufacturer ||
udev->ddesc.iProduct ||
udev->ddesc.iSerialNumber) {
/* read out the language ID string */
err = usb2_req_get_string_desc(udev, NULL,
(char *)scratch_ptr, 4, scratch_size,
USB_LANGUAGE_TABLE);
} else {
err = USB_ERR_INVAL;
}
if (err || (scratch_ptr[0] < 4)) {
udev->flags.no_strings = 1;
} else {
/* pick the first language as the default */
udev->langid = UGETW(scratch_ptr + 2);
}
/* assume 100mA bus powered for now. Changed when configured. */
udev->power = USB_MIN_POWER;
#if USB_HAVE_STRINGS
/* get serial number string */
err = usb2_req_get_string_any
(udev, NULL, (char *)scratch_ptr,
scratch_size, udev->ddesc.iSerialNumber);
strlcpy(udev->serial, (char *)scratch_ptr, sizeof(udev->serial));
/* get manufacturer string */
err = usb2_req_get_string_any
(udev, NULL, (char *)scratch_ptr,
scratch_size, udev->ddesc.iManufacturer);
strlcpy(udev->manufacturer, (char *)scratch_ptr, sizeof(udev->manufacturer));
/* get product string */
err = usb2_req_get_string_any
(udev, NULL, (char *)scratch_ptr,
scratch_size, udev->ddesc.iProduct);
strlcpy(udev->product, (char *)scratch_ptr, sizeof(udev->product));
/* finish up all the strings */
usb2_check_strings(udev);
#endif
if (udev->flags.usb2_mode == USB_MODE_HOST) {
uint8_t config_index;
uint8_t config_quirk;
uint8_t set_config_failed = 0;
/*
* Most USB devices should attach to config index 0 by
* default
*/
if (usb2_test_quirk(&uaa, UQ_CFG_INDEX_0)) {
config_index = 0;
config_quirk = 1;
} else if (usb2_test_quirk(&uaa, UQ_CFG_INDEX_1)) {
config_index = 1;
config_quirk = 1;
} else if (usb2_test_quirk(&uaa, UQ_CFG_INDEX_2)) {
config_index = 2;
config_quirk = 1;
} else if (usb2_test_quirk(&uaa, UQ_CFG_INDEX_3)) {
config_index = 3;
config_quirk = 1;
} else if (usb2_test_quirk(&uaa, UQ_CFG_INDEX_4)) {
config_index = 4;
config_quirk = 1;
} else {
config_index = 0;
config_quirk = 0;
}
repeat_set_config:
DPRINTF("setting config %u\n", config_index);
/* get the USB device configured */
err = usb2_set_config_index(udev, config_index);
if (err) {
if (udev->ddesc.bNumConfigurations != 0) {
if (!set_config_failed) {
set_config_failed = 1;
/* XXX try to re-enumerate the device */
err = usb2_req_re_enumerate(
udev, NULL);
if (err == 0)
goto repeat_set_config;
}
DPRINTFN(0, "Failure selecting "
"configuration index %u: %s, port %u, "
"addr %u (ignored)\n",
config_index, usb2_errstr(err), udev->port_no,
udev->address);
}
/*
* Some USB devices do not have any
* configurations. Ignore any set config
* failures!
*/
err = 0;
} else if (config_quirk) {
/* user quirk selects configuration index */
} else if ((config_index + 1) < udev->ddesc.bNumConfigurations) {
if ((udev->cdesc->bNumInterface < 2) &&
(usb2_get_no_endpoints(udev->cdesc) == 0)) {
DPRINTFN(0, "Found no endpoints "
"(trying next config)!\n");
config_index++;
goto repeat_set_config;
}
if (config_index == 0) {
/*
* Try to figure out if we have an
* auto-install disk there:
*/
if (usb2_test_autoinstall(udev, 0, 0) == 0) {
DPRINTFN(0, "Found possible auto-install "
"disk (trying next config)\n");
config_index++;
goto repeat_set_config;
}
}
} else if (usb2_test_huawei_autoinst_p(udev, &uaa) == 0) {
DPRINTFN(0, "Found Huawei auto-install disk!\n");
err = USB_ERR_STALLED; /* fake an error */
}
} else {
err = 0; /* set success */
}
DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n",
udev->address, udev, udev->parent_hub);
/* register our device - we are ready */
usb2_bus_port_set_device(bus, parent_hub ?
parent_hub->hub->ports + port_index : NULL, udev, device_index);
#if USB_HAVE_UGEN
/* Symlink the ugen device name */
udev->ugen_symlink = usb2_alloc_symlink(udev->ugen_name);
/* Announce device */
#if USB_HAVE_STRINGS
printf("%s: <%s> at %s\n", udev->ugen_name, udev->manufacturer,
device_get_nameunit(udev->bus->bdev));
#endif
usb2_notify_addq("+", udev);
#endif
done:
if (err) {
/* free device */
usb2_free_device(udev);
udev = NULL;
}
return (udev);
}
#if USB_HAVE_UGEN
static struct cdev *
usb2_make_dev(struct usb2_device *udev, int ep, int mode)
{
struct usb2_fs_privdata* pd;
char devname[20];
/* Store information to locate ourselves again later */
pd = malloc(sizeof(struct usb2_fs_privdata), M_USBDEV,
M_WAITOK | M_ZERO);
pd->bus_index = device_get_unit(udev->bus->bdev);
pd->dev_index = udev->device_index;
pd->ep_addr = ep;
pd->mode = mode;
/* Now, create the device itself */
snprintf(devname, sizeof(devname), "%u.%u.%u",
pd->bus_index, pd->dev_index, pd->ep_addr);
pd->cdev = make_dev(&usb2_devsw, 0, UID_ROOT,
GID_OPERATOR, 0600, USB_DEVICE_DIR "/%s", devname);
pd->cdev->si_drv1 = pd;
return (pd->cdev);
}
static void
usb2_cdev_create(struct usb2_device *udev)
{
struct usb2_config_descriptor *cd;
struct usb2_endpoint_descriptor *ed;
struct usb2_descriptor *desc;
struct usb2_fs_privdata* pd;
struct cdev *dev;
int inmode, outmode, inmask, outmask, mode;
uint8_t ep;
KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries"));
DPRINTFN(2, "Creating device nodes\n");
if (usb2_get_mode(udev) == USB_MODE_DEVICE) {
inmode = FWRITE;
outmode = FREAD;
} else { /* USB_MODE_HOST */
inmode = FREAD;
outmode = FWRITE;
}
inmask = 0;
outmask = 0;
desc = NULL;
/*
* Collect all used endpoint numbers instead of just
* generating 16 static endpoints.
*/
cd = usb2_get_config_descriptor(udev);
while ((desc = usb2_desc_foreach(cd, desc))) {
/* filter out all endpoint descriptors */
if ((desc->bDescriptorType == UDESC_ENDPOINT) &&
(desc->bLength >= sizeof(*ed))) {
ed = (struct usb2_endpoint_descriptor *)desc;
/* update masks */
ep = ed->bEndpointAddress;
if (UE_GET_DIR(ep) == UE_DIR_OUT)
outmask |= 1 << UE_GET_ADDR(ep);
else
inmask |= 1 << UE_GET_ADDR(ep);
}
}
/* Create all available endpoints except EP0 */
for (ep = 1; ep < 16; ep++) {
mode = inmask & (1 << ep) ? inmode : 0;
mode |= outmask & (1 << ep) ? outmode : 0;
if (mode == 0)
continue; /* no IN or OUT endpoint */
dev = usb2_make_dev(udev, ep, mode);
pd = dev->si_drv1;
LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next);
}
}
static void
usb2_cdev_free(struct usb2_device *udev)
{
struct usb2_fs_privdata* pd;
DPRINTFN(2, "Freeing device nodes\n");
while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) {
KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt"));
destroy_dev_sched_cb(pd->cdev, usb2_cdev_cleanup, pd);
pd->cdev = NULL;
LIST_REMOVE(pd, pd_next);
}
}
static void
usb2_cdev_cleanup(void* arg)
{
free(arg, M_USBDEV);
}
#endif
/*------------------------------------------------------------------------*
* usb2_free_device
*
* This function is NULL safe and will free an USB device.
*------------------------------------------------------------------------*/
void
usb2_free_device(struct usb2_device *udev)
{
struct usb2_bus *bus = udev->bus;;
DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no);
#if USB_HAVE_UGEN
usb2_notify_addq("-", udev);
#if USB_HAVE_STRINGS
printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name,
udev->manufacturer, device_get_nameunit(bus->bdev));
#endif
/* Destroy UGEN symlink, if any */
if (udev->ugen_symlink) {
usb2_free_symlink(udev->ugen_symlink);
udev->ugen_symlink = NULL;
}
#endif
/*
* Unregister our device first which will prevent any further
* references:
*/
usb2_bus_port_set_device(bus, udev->parent_hub ?
udev->parent_hub->hub->ports + udev->port_index : NULL,
NULL, USB_ROOT_HUB_ADDR);
#if USB_HAVE_UGEN
/* wait for all pending references to go away: */
mtx_lock(&usb2_ref_lock);
udev->refcount--;
while (udev->refcount != 0) {
usb2_cv_wait(udev->default_cv + 1, &usb2_ref_lock);
}
mtx_unlock(&usb2_ref_lock);
#endif
if (udev->flags.usb2_mode == USB_MODE_DEVICE) {
/* stop receiving any control transfers (Device Side Mode) */
usb2_transfer_unsetup(udev->default_xfer, USB_DEFAULT_XFER_MAX);
}
#if USB_HAVE_UGEN
/* free all FIFOs */
usb2_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, 1);
/*
* Free all interface related data and FIFOs, if any.
*/
usb2_cdev_free(udev);
#endif
usb2_free_iface_data(udev);
#if USB_HAVE_UGEN
destroy_dev_sched_cb(udev->default_dev, usb2_cdev_cleanup,
udev->default_dev->si_drv1);
#endif
/* unsetup any leftover default USB transfers */
usb2_transfer_unsetup(udev->default_xfer, USB_DEFAULT_XFER_MAX);
/* template unsetup, if any */
(usb2_temp_unsetup_p) (udev);
/*
* Make sure that our clear-stall messages are not queued
* anywhere:
*/
USB_BUS_LOCK(udev->bus);
usb2_proc_mwait(&udev->bus->non_giant_callback_proc,
&udev->cs_msg[0], &udev->cs_msg[1]);
USB_BUS_UNLOCK(udev->bus);
sx_destroy(udev->default_sx);
sx_destroy(udev->default_sx + 1);
usb2_cv_destroy(udev->default_cv);
usb2_cv_destroy(udev->default_cv + 1);
mtx_destroy(udev->default_mtx);
#if USB_HAVE_UGEN
KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries"));
#endif
/* free device */
free(udev, M_USB);
}
/*------------------------------------------------------------------------*
* usb2_get_iface
*
* This function is the safe way to get the USB interface structure
* pointer by interface index.
*
* Return values:
* NULL: Interface not present.
* Else: Pointer to USB interface structure.
*------------------------------------------------------------------------*/
struct usb2_interface *
usb2_get_iface(struct usb2_device *udev, uint8_t iface_index)
{
struct usb2_interface *iface = udev->ifaces + iface_index;
if ((iface < udev->ifaces) ||
(iface_index >= USB_IFACE_MAX) ||
(udev->cdesc == NULL) ||
(iface_index >= udev->cdesc->bNumInterface)) {
return (NULL);
}
return (iface);
}
/*------------------------------------------------------------------------*
* usb2_find_descriptor
*
* This function will lookup the first descriptor that matches the
* criteria given by the arguments "type" and "subtype". Descriptors
* will only be searched within the interface having the index
* "iface_index". If the "id" argument points to an USB descriptor,
* it will be skipped before the search is started. This allows
* searching for multiple descriptors using the same criteria. Else
* the search is started after the interface descriptor.
*
* Return values:
* NULL: End of descriptors
* Else: A descriptor matching the criteria
*------------------------------------------------------------------------*/
void *
usb2_find_descriptor(struct usb2_device *udev, void *id, uint8_t iface_index,
uint8_t type, uint8_t type_mask,
uint8_t subtype, uint8_t subtype_mask)
{
struct usb2_descriptor *desc;
struct usb2_config_descriptor *cd;
struct usb2_interface *iface;
cd = usb2_get_config_descriptor(udev);
if (cd == NULL) {
return (NULL);
}
if (id == NULL) {
iface = usb2_get_iface(udev, iface_index);
if (iface == NULL) {
return (NULL);
}
id = usb2_get_interface_descriptor(iface);
if (id == NULL) {
return (NULL);
}
}
desc = (void *)id;
while ((desc = usb2_desc_foreach(cd, desc))) {
if (desc->bDescriptorType == UDESC_INTERFACE) {
break;
}
if (((desc->bDescriptorType & type_mask) == type) &&
((desc->bDescriptorSubtype & subtype_mask) == subtype)) {
return (desc);
}
}
return (NULL);
}
/*------------------------------------------------------------------------*
* usb2_devinfo
*
* This function will dump information from the device descriptor
* belonging to the USB device pointed to by "udev", to the string
* pointed to by "dst_ptr" having a maximum length of "dst_len" bytes
* including the terminating zero.
*------------------------------------------------------------------------*/
void
usb2_devinfo(struct usb2_device *udev, char *dst_ptr, uint16_t dst_len)
{
struct usb2_device_descriptor *udd = &udev->ddesc;
uint16_t bcdDevice;
uint16_t bcdUSB;
bcdUSB = UGETW(udd->bcdUSB);
bcdDevice = UGETW(udd->bcdDevice);
if (udd->bDeviceClass != 0xFF) {
snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/"
"%x.%02x, addr %d",
#if USB_HAVE_STRINGS
udev->manufacturer, udev->product,
#else
"-", "-",
#endif
udd->bDeviceClass, udd->bDeviceSubClass,
(bcdUSB >> 8), bcdUSB & 0xFF,
(bcdDevice >> 8), bcdDevice & 0xFF,
udev->address);
} else {
snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/"
"%x.%02x, addr %d",
#if USB_HAVE_STRINGS
udev->manufacturer, udev->product,
#else
"-", "-",
#endif
(bcdUSB >> 8), bcdUSB & 0xFF,
(bcdDevice >> 8), bcdDevice & 0xFF,
udev->address);
}
}
#if USB_HAVE_STRINGS
#if USB_VERBOSE
/*
* Descriptions of of known vendors and devices ("products").
*/
struct usb_knowndev {
uint16_t vendor;
uint16_t product;
uint32_t flags;
const char *vendorname;
const char *productname;
};
#define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
#include "usbdevs.h"
#include "usbdevs_data.h"
#endif /* USB_VERBOSE */
/*------------------------------------------------------------------------*
* usb2_check_strings
*
* This function checks the manufacturer and product strings and will
* fill in defaults for missing strings.
*------------------------------------------------------------------------*/
static void
usb2_check_strings(struct usb2_device *udev)
{
struct usb2_device_descriptor *udd = &udev->ddesc;
const char *vendor;
const char *product;
#if USB_VERBOSE
const struct usb_knowndev *kdp;
#endif
uint16_t vendor_id;
uint16_t product_id;
usb2_trim_spaces(udev->manufacturer);
usb2_trim_spaces(udev->product);
if (udev->manufacturer[0]) {
vendor = udev->manufacturer;
} else {
vendor = NULL;
}
if (udev->product[0]) {
product = udev->product;
} else {
product = NULL;
}
vendor_id = UGETW(udd->idVendor);
product_id = UGETW(udd->idProduct);
#if USB_VERBOSE
if (vendor == NULL || product == NULL) {
for (kdp = usb_knowndevs;
kdp->vendorname != NULL;
kdp++) {
if (kdp->vendor == vendor_id &&
(kdp->product == product_id ||
(kdp->flags & USB_KNOWNDEV_NOPROD) != 0))
break;
}
if (kdp->vendorname != NULL) {
if (vendor == NULL)
vendor = kdp->vendorname;
if (product == NULL)
product = (kdp->flags & USB_KNOWNDEV_NOPROD) == 0 ?
kdp->productname : NULL;
}
}
#endif
if (vendor && *vendor) {
if (udev->manufacturer != vendor) {
strlcpy(udev->manufacturer, vendor,
sizeof(udev->manufacturer));
}
} else {
snprintf(udev->manufacturer,
sizeof(udev->manufacturer), "vendor 0x%04x", vendor_id);
}
if (product && *product) {
if (udev->product != product) {
strlcpy(udev->product, product,
sizeof(udev->product));
}
} else {
snprintf(udev->product,
sizeof(udev->product), "product 0x%04x", product_id);
}
}
#endif
/*
* Returns:
* See: USB_MODE_XXX
*/
uint8_t
usb2_get_mode(struct usb2_device *udev)
{
return (udev->flags.usb2_mode);
}
/*
* Returns:
* See: USB_SPEED_XXX
*/
uint8_t
usb2_get_speed(struct usb2_device *udev)
{
return (udev->speed);
}
uint32_t
usb2_get_isoc_fps(struct usb2_device *udev)
{
; /* indent fix */
switch (udev->speed) {
case USB_SPEED_LOW:
case USB_SPEED_FULL:
return (1000);
default:
return (8000);
}
}
struct usb2_device_descriptor *
usb2_get_device_descriptor(struct usb2_device *udev)
{
if (udev == NULL)
return (NULL); /* be NULL safe */
return (&udev->ddesc);
}
struct usb2_config_descriptor *
usb2_get_config_descriptor(struct usb2_device *udev)
{
if (udev == NULL)
return (NULL); /* be NULL safe */
return (udev->cdesc);
}
/*------------------------------------------------------------------------*
* usb2_test_quirk - test a device for a given quirk
*
* Return values:
* 0: The USB device does not have the given quirk.
* Else: The USB device has the given quirk.
*------------------------------------------------------------------------*/
uint8_t
usb2_test_quirk(const struct usb2_attach_arg *uaa, uint16_t quirk)
{
uint8_t found;
found = (usb2_test_quirk_p) (&uaa->info, quirk);
return (found);
}
struct usb2_interface_descriptor *
usb2_get_interface_descriptor(struct usb2_interface *iface)
{
if (iface == NULL)
return (NULL); /* be NULL safe */
return (iface->idesc);
}
uint8_t
usb2_get_interface_altindex(struct usb2_interface *iface)
{
return (iface->alt_index);
}
uint8_t
usb2_get_bus_index(struct usb2_device *udev)
{
return ((uint8_t)device_get_unit(udev->bus->bdev));
}
uint8_t
usb2_get_device_index(struct usb2_device *udev)
{
return (udev->device_index);
}
#if USB_HAVE_UGEN
/*------------------------------------------------------------------------*
* usb2_notify_addq
*
* This function will generate events for dev.
*------------------------------------------------------------------------*/
static void
usb2_notify_addq(const char *type, struct usb2_device *udev)
{
char *data = NULL;
struct malloc_type *mt;
mtx_lock(&malloc_mtx);
mt = malloc_desc2type("bus"); /* XXX M_BUS */
mtx_unlock(&malloc_mtx);
if (mt == NULL)
return;
data = malloc(512, mt, M_NOWAIT);
if (data == NULL)
return;
/* String it all together. */
snprintf(data, 1024,
"%s"
"%s "
"vendor=0x%04x "
"product=0x%04x "
"devclass=0x%02x "
"devsubclass=0x%02x "
"sernum=\"%s\" "
"at "
"port=%u "
"on "
"%s\n",
type,
udev->ugen_name,
UGETW(udev->ddesc.idVendor),
UGETW(udev->ddesc.idProduct),
udev->ddesc.bDeviceClass,
udev->ddesc.bDeviceSubClass,
#if USB_HAVE_STRINGS
udev->serial,
#else
"",
#endif
udev->port_no,
udev->parent_hub != NULL ?
udev->parent_hub->ugen_name :
device_get_nameunit(device_get_parent(udev->bus->bdev)));
devctl_queue_data(data);
}
/*------------------------------------------------------------------------*
* usb2_fifo_free_wrap
*
* This function will free the FIFOs.
*
* Flag values, if "iface_index" is equal to "USB_IFACE_INDEX_ANY".
* 0: Free all FIFOs except generic control endpoints.
* 1: Free all FIFOs.
*
* Flag values, if "iface_index" is not equal to "USB_IFACE_INDEX_ANY".
* Not used.
*------------------------------------------------------------------------*/
static void
usb2_fifo_free_wrap(struct usb2_device *udev,
uint8_t iface_index, uint8_t flag)
{
struct usb2_fifo *f;
uint16_t i;
/*
* Free any USB FIFOs on the given interface:
*/
for (i = 0; i != USB_FIFO_MAX; i++) {
f = udev->fifo[i];
if (f == NULL) {
continue;
}
/* Check if the interface index matches */
if (iface_index == f->iface_index) {
if (f->methods != &usb2_ugen_methods) {
/*
* Don't free any non-generic FIFOs in
* this case.
*/
continue;
}
if ((f->dev_ep_index == 0) &&
(f->fs_xfer == NULL)) {
/* no need to free this FIFO */
continue;
}
} else if (iface_index == USB_IFACE_INDEX_ANY) {
if ((f->methods == &usb2_ugen_methods) &&
(f->dev_ep_index == 0) && (flag == 0) &&
(f->fs_xfer == NULL)) {
/* no need to free this FIFO */
continue;
}
} else {
/* no need to free this FIFO */
continue;
}
/* free this FIFO */
usb2_fifo_free(f);
}
}
#endif
/*------------------------------------------------------------------------*
* usb2_peer_can_wakeup
*
* Return values:
* 0: Peer cannot do resume signalling.
* Else: Peer can do resume signalling.
*------------------------------------------------------------------------*/
uint8_t
usb2_peer_can_wakeup(struct usb2_device *udev)
{
const struct usb2_config_descriptor *cdp;
cdp = udev->cdesc;
if ((cdp != NULL) && (udev->flags.usb2_mode == USB_MODE_HOST)) {
return (cdp->bmAttributes & UC_REMOTE_WAKEUP);
}
return (0); /* not supported */
}
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