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234 lines
7.2 KiB
234 lines
7.2 KiB
/**************************************************************************** |
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* apps/system/usbmonitor/usbmonitor.c |
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* |
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* Copyright (C) 2013 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#include <nuttx/progmem.h> |
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#include <sys/types.h> |
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#include <stdbool.h> |
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#include <unistd.h> |
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#include <sched.h> |
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#include <syslog.h> |
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#include <errno.h> |
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#include <nuttx/usb/usbdev_trace.h> |
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#ifdef CONFIG_SYSTEM_USBMONITOR |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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#define USBMON_PREFIX "USB Monitor: " |
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/* Configuration ************************************************************/ |
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#ifndef CONFIG_SYSTEM_USBMONITOR_STACKSIZE |
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# define CONFIG_SYSTEM_USBMONITOR_STACKSIZE 2048 |
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#endif |
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#ifndef CONFIG_SYSTEM_USBMONITOR_PRIORITY |
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# define CONFIG_SYSTEM_USBMONITOR_PRIORITY 50 |
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#endif |
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#ifndef CONFIG_SYSTEM_USBMONITOR_INTERVAL |
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# define CONFIG_SYSTEM_USBMONITOR_INTERVAL 2 |
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#endif |
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#ifdef CONFIG_SYSTEM_USBMONITOR_TRACEINIT |
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# define TRACE_INIT_BITS (TRACE_INIT_BIT) |
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#else |
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# define TRACE_INIT_BITS (0) |
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#endif |
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#define TRACE_ERROR_BITS (TRACE_DEVERROR_BIT|TRACE_CLSERROR_BIT) |
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#ifdef CONFIG_SYSTEM_USBMONITOR_TRACECLASS |
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# define TRACE_CLASS_BITS (TRACE_CLASS_BIT|TRACE_CLASSAPI_BIT|\ |
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TRACE_CLASSSTATE_BIT) |
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#else |
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# define TRACE_CLASS_BITS (0) |
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#endif |
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#ifdef CONFIG_SYSTEM_USBMONITOR_TRACETRANSFERS |
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# define TRACE_TRANSFER_BITS (TRACE_OUTREQQUEUED_BIT|TRACE_INREQQUEUED_BIT|\ |
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TRACE_READ_BIT|TRACE_WRITE_BIT|\ |
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TRACE_COMPLETE_BIT) |
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#else |
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# define TRACE_TRANSFER_BITS (0) |
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#endif |
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#ifdef CONFIG_SYSTEM_USBMONITOR_TRACECONTROLLER |
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# define TRACE_CONTROLLER_BITS (TRACE_EP_BIT|TRACE_DEV_BIT) |
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#else |
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# define TRACE_CONTROLLER_BITS (0) |
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#endif |
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#ifdef CONFIG_SYSTEM_USBMONITOR_TRACEINTERRUPTS |
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# define TRACE_INTERRUPT_BITS (TRACE_INTENTRY_BIT|TRACE_INTDECODE_BIT|\ |
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TRACE_INTEXIT_BIT) |
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#else |
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# define TRACE_INTERRUPT_BITS (0) |
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#endif |
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#define TRACE_BITSET (TRACE_INIT_BITS|TRACE_ERROR_BITS|\ |
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TRACE_CLASS_BITS|TRACE_TRANSFER_BITS|\ |
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TRACE_CONTROLLER_BITS|TRACE_INTERRUPT_BITS) |
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/**************************************************************************** |
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* Private Types |
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****************************************************************************/ |
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struct usbmon_state_s |
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{ |
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volatile bool started; |
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volatile bool stop; |
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pid_t pid; |
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}; |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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static struct usbmon_state_s g_usbmonitor; |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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static int usbmonitor_tracecallback(struct usbtrace_s *trace, void *arg) |
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{ |
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usbtrace_trprintf((trprintf_t)syslog, trace->event, trace->value); |
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return 0; |
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} |
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static int usbmonitor_daemon(int argc, char **argv) |
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{ |
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syslog(USBMON_PREFIX "Running: %d\n", g_usbmonitor.pid); |
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/* Loop until we detect that there is a request to stop. */ |
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while (!g_usbmonitor.stop) |
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{ |
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sleep(CONFIG_SYSTEM_USBMONITOR_INTERVAL); |
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(void)usbtrace_enumerate(usbmonitor_tracecallback, NULL); |
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} |
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/* Stopped */ |
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g_usbmonitor.stop = false; |
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g_usbmonitor.started = false; |
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syslog(USBMON_PREFIX "Stopped: %d\n", g_usbmonitor.pid); |
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return 0; |
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} |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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int usbmonitor_start(int argc, char **argv) |
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{ |
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/* Has the monitor already started? */ |
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sched_lock(); |
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if (!g_usbmonitor.started) |
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{ |
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int ret; |
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/* No.. start it now */ |
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/* First, initialize any USB tracing options that were requested */ |
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usbtrace_enable(TRACE_BITSET); |
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/* Then start the USB monitoring daemon */ |
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g_usbmonitor.started = true; |
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g_usbmonitor.stop = false; |
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ret = TASK_CREATE("USB Monitor", CONFIG_SYSTEM_USBMONITOR_PRIORITY, |
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CONFIG_SYSTEM_USBMONITOR_STACKSIZE, |
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(main_t)usbmonitor_daemon, (const char **)NULL); |
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if (ret < 0) |
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{ |
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int errcode = errno; |
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syslog(USBMON_PREFIX |
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"ERROR: Failed to start the USB monitor: %d\n", |
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errcode); |
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} |
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else |
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{ |
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g_usbmonitor.pid = ret; |
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syslog(USBMON_PREFIX "Started: %d\n", g_usbmonitor.pid); |
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} |
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sched_unlock(); |
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return 0; |
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} |
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sched_unlock(); |
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syslog(USBMON_PREFIX "%s: %d\n", |
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g_usbmonitor.stop ? "Stopping" : "Running", g_usbmonitor.pid); |
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return 0; |
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} |
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int usbmonitor_stop(int argc, char **argv) |
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{ |
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/* Has the monitor already started? */ |
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if (g_usbmonitor.started) |
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{ |
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/* Stop the USB monitor. The next time the monitor wakes up, |
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* it will see the the stop indication and will exist. |
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*/ |
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syslog(USBMON_PREFIX "Stopping: %d\n", g_usbmonitor.pid); |
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g_usbmonitor.stop = true; |
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/* We may as well disable tracing since there is no listener */ |
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usbtrace_enable(0); |
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} |
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syslog(USBMON_PREFIX "Stopped: %d\n", g_usbmonitor.pid); |
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return 0; |
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} |
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#endif /* CONFIG_SYSTEM_USBMONITOR */
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