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freebsd/sys/dev/usb/usb_debug.c

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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.
*/
#ifdef USB_GLOBAL_INCLUDE_FILE
#include USB_GLOBAL_INCLUDE_FILE
#else
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#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 <ddb/ddb.h>
#include <ddb/db_sym.h>
#endif /* USB_GLOBAL_INCLUDE_FILE */
/*
* Define this unconditionally in case a kernel module is loaded that
* has been compiled with debugging options.
*/
int usb_debug = 0;
SYSCTL_NODE(_hw, OID_AUTO, usb, CTLFLAG_RW, 0, "USB debugging");
SYSCTL_INT(_hw_usb, OID_AUTO, debug, CTLFLAG_RWTUN,
&usb_debug, 0, "Debug level");
#ifdef USB_DEBUG
/*
* Sysctls to modify timings/delays
*/
static SYSCTL_NODE(_hw_usb, OID_AUTO, timings, CTLFLAG_RW, 0, "Timings");
static int usb_timings_sysctl_handler(SYSCTL_HANDLER_ARGS);
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, port_reset_delay, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_port_reset_delay, sizeof(usb_port_reset_delay),
usb_timings_sysctl_handler, "IU", "Port Reset Delay");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, port_root_reset_delay, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_port_root_reset_delay, sizeof(usb_port_root_reset_delay),
usb_timings_sysctl_handler, "IU", "Root Port Reset Delay");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, port_reset_recovery, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_port_reset_recovery, sizeof(usb_port_reset_recovery),
usb_timings_sysctl_handler, "IU", "Port Reset Recovery");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, port_powerup_delay, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_port_powerup_delay, sizeof(usb_port_powerup_delay),
usb_timings_sysctl_handler, "IU", "Port PowerUp Delay");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, port_resume_delay, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_port_resume_delay, sizeof(usb_port_resume_delay),
usb_timings_sysctl_handler, "IU", "Port Resume Delay");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, set_address_settle, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_set_address_settle, sizeof(usb_set_address_settle),
usb_timings_sysctl_handler, "IU", "Set Address Settle");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, resume_delay, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_resume_delay, sizeof(usb_resume_delay),
usb_timings_sysctl_handler, "IU", "Resume Delay");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, resume_wait, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_resume_wait, sizeof(usb_resume_wait),
usb_timings_sysctl_handler, "IU", "Resume Wait");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, resume_recovery, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_resume_recovery, sizeof(usb_resume_recovery),
usb_timings_sysctl_handler, "IU", "Resume Recovery");
SYSCTL_PROC(_hw_usb_timings, OID_AUTO, extra_power_up_time, CTLTYPE_UINT | CTLFLAG_RWTUN,
&usb_extra_power_up_time, sizeof(usb_extra_power_up_time),
usb_timings_sysctl_handler, "IU", "Extra PowerUp Time");
#endif
/*------------------------------------------------------------------------*
* usb_dump_iface
*
* This function dumps information about an USB interface.
*------------------------------------------------------------------------*/
void
usb_dump_iface(struct usb_interface *iface)
{
printf("usb_dump_iface: iface=%p\n", iface);
if (iface == NULL) {
return;
}
printf(" iface=%p idesc=%p altindex=%d\n",
iface, iface->idesc, iface->alt_index);
}
/*------------------------------------------------------------------------*
* usb_dump_device
*
* This function dumps information about an USB device.
*------------------------------------------------------------------------*/
void
usb_dump_device(struct usb_device *udev)
{
printf("usb_dump_device: dev=%p\n", udev);
if (udev == NULL) {
return;
}
printf(" bus=%p \n"
" address=%d config=%d depth=%d speed=%d self_powered=%d\n"
" power=%d langid=%d\n",
udev->bus,
udev->address, udev->curr_config_no, udev->depth, udev->speed,
udev->flags.self_powered, udev->power, udev->langid);
}
/*------------------------------------------------------------------------*
* usb_dump_queue
*
* This function dumps the USB transfer that are queued up on an USB endpoint.
*------------------------------------------------------------------------*/
void
usb_dump_queue(struct usb_endpoint *ep)
{
struct usb_xfer *xfer;
usb_stream_t x;
printf("usb_dump_queue: endpoint=%p xfer: ", ep);
for (x = 0; x != USB_MAX_EP_STREAMS; x++) {
TAILQ_FOREACH(xfer, &ep->endpoint_q[x].head, wait_entry)
printf(" %p", xfer);
}
printf("\n");
}
/*------------------------------------------------------------------------*
* usb_dump_endpoint
*
* This function dumps information about an USB endpoint.
*------------------------------------------------------------------------*/
void
usb_dump_endpoint(struct usb_endpoint *ep)
{
if (ep) {
printf("usb_dump_endpoint: endpoint=%p", ep);
printf(" edesc=%p isoc_next=%d toggle_next=%d",
ep->edesc, ep->isoc_next, ep->toggle_next);
if (ep->edesc) {
printf(" bEndpointAddress=0x%02x",
ep->edesc->bEndpointAddress);
}
printf("\n");
usb_dump_queue(ep);
} else {
printf("usb_dump_endpoint: endpoint=NULL\n");
}
}
/*------------------------------------------------------------------------*
* usb_dump_xfer
*
* This function dumps information about an USB transfer.
*------------------------------------------------------------------------*/
void
usb_dump_xfer(struct usb_xfer *xfer)
{
struct usb_device *udev;
printf("usb_dump_xfer: xfer=%p\n", xfer);
if (xfer == NULL) {
return;
}
if (xfer->endpoint == NULL) {
printf("xfer %p: endpoint=NULL\n",
xfer);
return;
}
udev = xfer->xroot->udev;
printf("xfer %p: udev=%p vid=0x%04x pid=0x%04x addr=%d "
"endpoint=%p ep=0x%02x attr=0x%02x\n",
xfer, udev,
UGETW(udev->ddesc.idVendor),
UGETW(udev->ddesc.idProduct),
udev->address, xfer->endpoint,
xfer->endpoint->edesc->bEndpointAddress,
xfer->endpoint->edesc->bmAttributes);
}
#ifdef USB_DEBUG
unsigned int usb_port_reset_delay = USB_PORT_RESET_DELAY;
unsigned int usb_port_root_reset_delay = USB_PORT_ROOT_RESET_DELAY;
unsigned int usb_port_reset_recovery = USB_PORT_RESET_RECOVERY;
unsigned int usb_port_powerup_delay = USB_PORT_POWERUP_DELAY;
unsigned int usb_port_resume_delay = USB_PORT_RESUME_DELAY;
unsigned int usb_set_address_settle = USB_SET_ADDRESS_SETTLE;
unsigned int usb_resume_delay = USB_RESUME_DELAY;
unsigned int usb_resume_wait = USB_RESUME_WAIT;
unsigned int usb_resume_recovery = USB_RESUME_RECOVERY;
unsigned int usb_extra_power_up_time = USB_EXTRA_POWER_UP_TIME;
/*------------------------------------------------------------------------*
* usb_timings_sysctl_handler
*
* This function updates timings variables, adjusting them where necessary.
*------------------------------------------------------------------------*/
static int usb_timings_sysctl_handler(SYSCTL_HANDLER_ARGS)
{
int error = 0;
unsigned int val;
/*
* Attempt to get a coherent snapshot by making a copy of the data.
*/
if (arg1)
val = *(unsigned int *)arg1;
else
val = arg2;
error = SYSCTL_OUT(req, &val, sizeof(int));
if (error || !req->newptr)
return (error);
if (!arg1)
return EPERM;
error = SYSCTL_IN(req, &val, sizeof(unsigned int));
if (error)
return (error);
/*
* Now make sure the values are decent, and certainly no lower than
* what the USB spec prescribes.
*/
unsigned int *p = (unsigned int *)arg1;
if (p == &usb_port_reset_delay) {
if (val < USB_PORT_RESET_DELAY_SPEC)
return (EINVAL);
} else if (p == &usb_port_root_reset_delay) {
if (val < USB_PORT_ROOT_RESET_DELAY_SPEC)
return (EINVAL);
} else if (p == &usb_port_reset_recovery) {
if (val < USB_PORT_RESET_RECOVERY_SPEC)
return (EINVAL);
} else if (p == &usb_port_powerup_delay) {
if (val < USB_PORT_POWERUP_DELAY_SPEC)
return (EINVAL);
} else if (p == &usb_port_resume_delay) {
if (val < USB_PORT_RESUME_DELAY_SPEC)
return (EINVAL);
} else if (p == &usb_set_address_settle) {
if (val < USB_SET_ADDRESS_SETTLE_SPEC)
return (EINVAL);
} else if (p == &usb_resume_delay) {
if (val < USB_RESUME_DELAY_SPEC)
return (EINVAL);
} else if (p == &usb_resume_wait) {
if (val < USB_RESUME_WAIT_SPEC)
return (EINVAL);
} else if (p == &usb_resume_recovery) {
if (val < USB_RESUME_RECOVERY_SPEC)
return (EINVAL);
} else if (p == &usb_extra_power_up_time) {
if (val < USB_EXTRA_POWER_UP_TIME_SPEC)
return (EINVAL);
} else {
/* noop */
}
*p = val;
return 0;
}
#endif
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