| /* |
| * Copyright (c) 2012-2015 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /**========================================================================= |
| |
| \file vos_trace.c |
| |
| \brief virtual Operating System Servies (vOS) |
| |
| Trace, logging, and debugging definitions and APIs |
| |
| |
| ========================================================================*/ |
| |
| /*=========================================================================== |
| |
| EDIT HISTORY FOR FILE |
| |
| |
| This section contains comments describing changes made to the module. |
| Notice that changes are listed in reverse chronological order. |
| |
| |
| $Header:$ $DateTime: $ $Author: $ |
| |
| |
| when who what, where, why |
| -------- --- -------------------------------------------------------- |
| 09/16/08 hvm Adding ability to set multiple trace levels per component |
| 09/11/08 lac Added trace levels per component. Cleanup from review. |
| 08/14/08 vpai Particular modules and desired level can be selected |
| 06/20/08 vpai Created Module |
| ===========================================================================*/ |
| |
| /*-------------------------------------------------------------------------- |
| Include Files |
| ------------------------------------------------------------------------*/ |
| #include <vos_trace.h> |
| #include <aniGlobal.h> |
| #include <wlan_logging_sock_svc.h> |
| /*-------------------------------------------------------------------------- |
| Preprocessor definitions and constants |
| ------------------------------------------------------------------------*/ |
| |
| #define VOS_TRACE_BUFFER_SIZE ( 512 ) |
| |
| // macro to map vos trace levels into the bitmask |
| #define VOS_TRACE_LEVEL_TO_MODULE_BITMASK( _level ) ( ( 1 << (_level) ) ) |
| |
| typedef struct |
| { |
| // Trace level for a module, as a bitmask. The bits in this mask |
| // are ordered by VOS_TRACE_LEVEL. For example, each bit represents |
| // one of the bits in VOS_TRACE_LEVEL that may be turned on to have |
| // traces at that level logged, i.e. if VOS_TRACE_LEVEL_ERROR is |
| // == 2, then if bit 2 (low order) is turned ON, then ERROR traces |
| // will be printed to the trace log. |
| // |
| // Note that all bits turned OFF means no traces. |
| v_U16_t moduleTraceLevel; |
| |
| // 3 character string name for the module |
| unsigned char moduleNameStr[ 4 ]; // 3 chars plus the NULL |
| |
| } moduleTraceInfo; |
| |
| #define VOS_DEFAULT_TRACE_LEVEL \ |
| ((1<<VOS_TRACE_LEVEL_FATAL)|(1<<VOS_TRACE_LEVEL_ERROR)) |
| |
| // Array of static data that contains all of the per module trace |
| // information. This includes the trace level for the module and |
| // the 3 character 'name' of the module for marking the trace logs. |
| moduleTraceInfo gVosTraceInfo[ VOS_MODULE_ID_MAX ] = |
| { |
| [VOS_MODULE_ID_BAP] = { VOS_DEFAULT_TRACE_LEVEL, "BAP" }, |
| [VOS_MODULE_ID_TL] = { VOS_DEFAULT_TRACE_LEVEL, "TL " }, |
| [VOS_MODULE_ID_WDI] = { VOS_DEFAULT_TRACE_LEVEL, "WDI" }, |
| [VOS_MODULE_ID_SVC] = { VOS_DEFAULT_TRACE_LEVEL, "SVC" }, |
| [VOS_MODULE_ID_RSV4] = { VOS_DEFAULT_TRACE_LEVEL, "RS4" }, |
| [VOS_MODULE_ID_HDD] = { VOS_DEFAULT_TRACE_LEVEL, "HDD" }, |
| [VOS_MODULE_ID_SME] = { VOS_DEFAULT_TRACE_LEVEL, "SME" }, |
| [VOS_MODULE_ID_PE] = { VOS_DEFAULT_TRACE_LEVEL, "PE " }, |
| [VOS_MODULE_ID_WDA] = { VOS_DEFAULT_TRACE_LEVEL, "WDA" }, |
| [VOS_MODULE_ID_SYS] = { VOS_DEFAULT_TRACE_LEVEL, "SYS" }, |
| [VOS_MODULE_ID_VOSS] = { VOS_DEFAULT_TRACE_LEVEL, "VOS" }, |
| [VOS_MODULE_ID_SAP] = { VOS_DEFAULT_TRACE_LEVEL, "SAP" }, |
| [VOS_MODULE_ID_HDD_SOFTAP] = { VOS_DEFAULT_TRACE_LEVEL, "HSP" }, |
| [VOS_MODULE_ID_PMC] = { VOS_DEFAULT_TRACE_LEVEL, "PMC" }, |
| [VOS_MODULE_ID_HDD_DATA] = { VOS_DEFAULT_TRACE_LEVEL, "HDP" }, |
| [VOS_MODULE_ID_HDD_SAP_DATA] = { VOS_DEFAULT_TRACE_LEVEL, "SDP" }, |
| }; |
| /*------------------------------------------------------------------------- |
| Static and Global variables |
| ------------------------------------------------------------------------*/ |
| static spinlock_t ltraceLock; |
| |
| static tvosTraceRecord gvosTraceTbl[MAX_VOS_TRACE_RECORDS]; |
| // Global vosTraceData |
| static tvosTraceData gvosTraceData; |
| /* |
| * all the call back functions for dumping MTRACE messages from ring buffer |
| * are stored in vostraceCBTable,these callbacks are initialized during init only |
| * so, we will make a copy of these call back functions and maintain in to |
| * vostraceRestoreCBTable. Incase if we make modifications to vostraceCBTable, |
| * we can certainly retrieve all the call back functions back from Restore Table |
| */ |
| static tpvosTraceCb vostraceCBTable[VOS_MODULE_ID_MAX]; |
| static tpvosTraceCb vostraceRestoreCBTable[VOS_MODULE_ID_MAX]; |
| static tp_vos_state_info_cb vos_state_info_table[VOS_MODULE_ID_MAX]; |
| |
| /*------------------------------------------------------------------------- |
| Functions |
| ------------------------------------------------------------------------*/ |
| void vos_trace_setLevel( VOS_MODULE_ID module, VOS_TRACE_LEVEL level ) |
| { |
| // Make sure the caller is passing in a valid LEVEL. |
| if ( level >= VOS_TRACE_LEVEL_MAX ) |
| { |
| pr_err("%s: Invalid trace level %d passed in!\n", __func__, level); |
| return; |
| } |
| |
| // Treat 'none' differently. NONE means we have to run off all |
| // the bits in the bit mask so none of the traces appear. Anything other |
| // than 'none' means we need to turn ON a bit in the bitmask. |
| if ( VOS_TRACE_LEVEL_NONE == level ) |
| { |
| gVosTraceInfo[ module ].moduleTraceLevel = VOS_TRACE_LEVEL_NONE; |
| } |
| else |
| { |
| // Set the desired bit in the bit mask for the module trace level. |
| gVosTraceInfo[ module ].moduleTraceLevel |= VOS_TRACE_LEVEL_TO_MODULE_BITMASK( level ); |
| } |
| } |
| |
| void vos_trace_setValue( VOS_MODULE_ID module, VOS_TRACE_LEVEL level, v_U8_t on) |
| { |
| // Make sure the caller is passing in a valid LEVEL. |
| if ( level < 0 || level >= VOS_TRACE_LEVEL_MAX ) |
| { |
| pr_err("%s: Invalid trace level %d passed in!\n", __func__, level); |
| return; |
| } |
| |
| // Make sure the caller is passing in a valid module. |
| if ( module < 0 || module >= VOS_MODULE_ID_MAX ) |
| { |
| pr_err("%s: Invalid module id %d passed in!\n", __func__, module); |
| return; |
| } |
| |
| // Treat 'none' differently. NONE means we have to turn off all |
| // the bits in the bit mask so none of the traces appear. |
| if ( VOS_TRACE_LEVEL_NONE == level ) |
| { |
| gVosTraceInfo[ module ].moduleTraceLevel = VOS_TRACE_LEVEL_NONE; |
| } |
| // Treat 'All' differently. All means we have to turn on all |
| // the bits in the bit mask so all of the traces appear. |
| else if ( VOS_TRACE_LEVEL_ALL == level ) |
| { |
| gVosTraceInfo[ module ].moduleTraceLevel = 0xFFFF; |
| } |
| |
| else |
| { |
| if (on) |
| // Set the desired bit in the bit mask for the module trace level. |
| gVosTraceInfo[ module ].moduleTraceLevel |= VOS_TRACE_LEVEL_TO_MODULE_BITMASK( level ); |
| else |
| // Clear the desired bit in the bit mask for the module trace level. |
| gVosTraceInfo[ module ].moduleTraceLevel &= ~(VOS_TRACE_LEVEL_TO_MODULE_BITMASK( level )); |
| } |
| } |
| |
| |
| v_BOOL_t vos_trace_getLevel( VOS_MODULE_ID module, VOS_TRACE_LEVEL level ) |
| { |
| v_BOOL_t traceOn = VOS_FALSE; |
| |
| if ( ( VOS_TRACE_LEVEL_NONE == level ) || |
| ( VOS_TRACE_LEVEL_ALL == level ) || |
| ( level >= VOS_TRACE_LEVEL_MAX ) ) |
| { |
| traceOn = VOS_FALSE; |
| } |
| else |
| { |
| traceOn = ( level & gVosTraceInfo[ module ].moduleTraceLevel ) ? VOS_TRUE : VOS_FALSE; |
| } |
| |
| return( traceOn ); |
| } |
| |
| void vos_snprintf(char *strBuffer, unsigned int size, char *strFormat, ...) |
| { |
| va_list val; |
| |
| va_start( val, strFormat ); |
| snprintf (strBuffer, size, strFormat, val); |
| va_end( val ); |
| } |
| |
| #ifdef VOS_ENABLE_TRACING |
| |
| /*---------------------------------------------------------------------------- |
| |
| \brief vos_trace_msg() - Externally called trace function |
| |
| Checks the level of severity and accordingly prints the trace messages |
| |
| \param module - module identifier. A member of the VOS_MODULE_ID |
| enumeration that identifies the module issuing the trace message. |
| |
| \param level - trace level. A member of the VOS_TRACE_LEVEL |
| enumeration indicating the severity of the condition causing the |
| trace message to be issued. More severe conditions are more |
| likely to be logged. |
| |
| \param strFormat - format string. The message to be logged. This format |
| string contains printf-like replacement parameters, which follow |
| this parameter in the variable argument list. |
| |
| \return nothing |
| |
| \sa |
| |
| --------------------------------------------------------------------------*/ |
| void vos_trace_msg( VOS_MODULE_ID module, VOS_TRACE_LEVEL level, char *strFormat, ... ) |
| { |
| char strBuffer[VOS_TRACE_BUFFER_SIZE]; |
| int n; |
| |
| // Print the trace message when the desired level bit is set in the module |
| // tracel level mask. |
| if ( gVosTraceInfo[ module ].moduleTraceLevel & VOS_TRACE_LEVEL_TO_MODULE_BITMASK( level ) ) |
| { |
| // the trace level strings in an array. these are ordered in the same order |
| // as the trace levels are defined in the enum (see VOS_TRACE_LEVEL) so we |
| // can index into this array with the level and get the right string. The |
| // vos trace levels are... |
| // none, Fatal, Error, Warning, Info, InfoHigh, InfoMed, InfoLow, Debug |
| static const char * TRACE_LEVEL_STR[] = { " ", "F ", "E ", "W ", "I ", "IH", "IM", "IL", "D" }; |
| va_list val; |
| va_start(val, strFormat); |
| |
| // print the prefix string into the string buffer... |
| n = snprintf(strBuffer, VOS_TRACE_BUFFER_SIZE, "wlan: [%2s:%3s] ", |
| (char *) TRACE_LEVEL_STR[ level ], |
| (char *) gVosTraceInfo[ module ].moduleNameStr ); |
| |
| // print the formatted log message after the prefix string. |
| if ((n >= 0) && (n < VOS_TRACE_BUFFER_SIZE)) |
| { |
| vsnprintf(strBuffer + n, VOS_TRACE_BUFFER_SIZE - n, strFormat, val ); |
| |
| #ifdef WLAN_LOGGING_SOCK_SVC_ENABLE |
| wlan_log_to_user(level, (char *)strBuffer, strlen(strBuffer)); |
| #else |
| pr_err("%s\n", strBuffer); |
| #endif |
| } |
| va_end(val); |
| } |
| } |
| |
| void vos_trace_display(void) |
| { |
| VOS_MODULE_ID moduleId; |
| |
| pr_err(" 1)FATAL 2)ERROR 3)WARN 4)INFO 5)INFO_H 6)INFO_M 7)INFO_L 8)DEBUG\n"); |
| for (moduleId = 0; moduleId < VOS_MODULE_ID_MAX; ++moduleId) |
| { |
| pr_err("%2d)%s %s %s %s %s %s %s %s %s\n", |
| (int)moduleId, |
| gVosTraceInfo[moduleId].moduleNameStr, |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_FATAL)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_ERROR)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_WARN)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_INFO)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_INFO_HIGH)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_INFO_MED)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_INFO_LOW)) ? "X":" ", |
| (gVosTraceInfo[moduleId].moduleTraceLevel & (1 << VOS_TRACE_LEVEL_DEBUG)) ? "X":" " |
| ); |
| } |
| } |
| |
| /*---------------------------------------------------------------------------- |
| |
| \brief vos_trace_hex_dump() - Externally called hex dump function |
| |
| Checks the level of severity and accordingly prints the trace messages |
| |
| \param module - module identifier. A member of the VOS_MODULE_ID |
| enumeration that identifies the module issuing the trace message. |
| |
| \param level - trace level. A member of the VOS_TRACE_LEVEL |
| enumeration indicating the severity of the condition causing the |
| trace message to be issued. More severe conditions are more |
| likely to be logged. |
| |
| \param data - . The base address of the buffer to be logged. |
| |
| \param buf_len - . The size of the buffer to be logged. |
| |
| \return nothing |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| void vos_trace_hex_dump( VOS_MODULE_ID module, VOS_TRACE_LEVEL level, |
| void *data, int buf_len ) |
| { |
| char *buf = (char *)data; |
| int i; |
| for (i=0; (i+7)<buf_len; i+=8) |
| { |
| vos_trace_msg( module, level, |
| "%02x %02x %02x %02x %02x %02x %02x %02x \n", |
| buf[i], |
| buf[i+1], |
| buf[i+2], |
| buf[i+3], |
| buf[i+4], |
| buf[i+5], |
| buf[i+6], |
| buf[i+7]); |
| } |
| |
| // Dump the bytes in the last line |
| for (; i < buf_len; i++) |
| { |
| vos_trace_msg( module, level, "%02x ", buf[i]); |
| if ((i+1) == buf_len) |
| vos_trace_msg( module, level, "\n"); |
| } |
| |
| } |
| |
| #endif |
| |
| /*----------------------------------------------------------------------------- |
| \brief vosTraceEnable() - Enable MTRACE for specific modules whose bits are |
| set in bitmask and enable is true. if enable is false it disables MTRACE for |
| that module. set the bitmask according to enum value of the modules. |
| |
| this functions will be called when you issue ioctl as mentioned following |
| [iwpriv wlan0 setdumplog <value> <enable>]. |
| <value> - Decimal number, i.e. 64 decimal value shows only SME module, |
| 128 decimal value shows only PE module, 192 decimal value shows PE and SME. |
| |
| \param - bitmask_of_moduleId - as explained above set bitmask according to |
| enum of the modules. |
| 32 [dec] = 0010 0000 [bin] <enum of HDD is 5> |
| 64 [dec] = 0100 0000 [bin] <enum of SME is 6> |
| 128 [dec] = 1000 0000 [bin] <enum of PE is 7> |
| \param - enable - can be true or false. |
| True implies enabling MTRACE, false implies disabling MTRACE. |
| ---------------------------------------------------------------------------*/ |
| void vosTraceEnable(v_U32_t bitmask_of_moduleId, v_U8_t enable) |
| { |
| int i; |
| if (bitmask_of_moduleId) |
| { |
| for (i=0; i<VOS_MODULE_ID_MAX; i++) |
| { |
| if (((bitmask_of_moduleId >> i) & 1 )) |
| { |
| if(enable) |
| { |
| if (NULL != vostraceRestoreCBTable[i]) |
| { |
| vostraceCBTable[i] = vostraceRestoreCBTable[i]; |
| } |
| } |
| else |
| { |
| vostraceRestoreCBTable[i] = vostraceCBTable[i]; |
| vostraceCBTable[i] = NULL; |
| } |
| } |
| } |
| } |
| |
| else |
| { |
| if(enable) |
| { |
| for (i=0; i<VOS_MODULE_ID_MAX; i++) |
| { |
| if (NULL != vostraceRestoreCBTable[i]) |
| { |
| vostraceCBTable[i] = vostraceRestoreCBTable[i]; |
| } |
| } |
| } |
| else |
| { |
| for (i=0; i<VOS_MODULE_ID_MAX; i++) |
| { |
| vostraceRestoreCBTable[i] = vostraceCBTable[i]; |
| vostraceCBTable[i] = NULL; |
| } |
| } |
| } |
| } |
| |
| /*----------------------------------------------------------------------------- |
| \brief vosTraceInit() - Initializes vos trace structures and variables. |
| |
| Called immediately after vos_preopen, so that we can start recording HDD |
| events ASAP. |
| ----------------------------------------------------------------------------*/ |
| void vosTraceInit() |
| { |
| v_U8_t i; |
| gvosTraceData.head = INVALID_VOS_TRACE_ADDR; |
| gvosTraceData.tail = INVALID_VOS_TRACE_ADDR; |
| gvosTraceData.num = 0; |
| gvosTraceData.enable = TRUE; |
| gvosTraceData.dumpCount = DEFAULT_VOS_TRACE_DUMP_COUNT; |
| gvosTraceData.numSinceLastDump = 0; |
| |
| for (i=0; i<VOS_MODULE_ID_MAX; i++) |
| { |
| vostraceCBTable[i] = NULL; |
| vostraceRestoreCBTable[i] = NULL; |
| } |
| } |
| |
| void vos_register_debugcb_init() |
| { |
| v_U8_t i; |
| |
| for (i = 0; i < VOS_MODULE_ID_MAX; i++) { |
| vos_state_info_table[i] = NULL; |
| } |
| } |
| |
| /*----------------------------------------------------------------------------- |
| \brief vos_trace() - puts the messages in to ring-buffer |
| |
| This function will be called from each module who wants record the messages |
| in circular queue. Before calling this functions make sure you have |
| registered your module with voss through vosTraceRegister function. |
| |
| \param module - enum of module, basically module id. |
| \param code - |
| \param session - |
| \param data - actual message contents. |
| ----------------------------------------------------------------------------*/ |
| void vos_trace(v_U8_t module, v_U8_t code, v_U8_t session, v_U32_t data) |
| { |
| tpvosTraceRecord rec = NULL; |
| unsigned long flags; |
| |
| |
| if (!gvosTraceData.enable) |
| { |
| return; |
| } |
| //If module is not registered, don't record for that module. |
| if (NULL == vostraceCBTable[module]) |
| { |
| return; |
| } |
| |
| /* Aquire the lock so that only one thread at a time can fill the ring buffer */ |
| spin_lock_irqsave(<raceLock, flags); |
| |
| gvosTraceData.num++; |
| |
| if (gvosTraceData.num > MAX_VOS_TRACE_RECORDS) |
| { |
| gvosTraceData.num = MAX_VOS_TRACE_RECORDS; |
| } |
| |
| if (INVALID_VOS_TRACE_ADDR == gvosTraceData.head) |
| { |
| /* first record */ |
| gvosTraceData.head = 0; |
| gvosTraceData.tail = 0; |
| } |
| else |
| { |
| /* queue is not empty */ |
| v_U32_t tail = gvosTraceData.tail + 1; |
| |
| if (MAX_VOS_TRACE_RECORDS == tail) |
| { |
| tail = 0; |
| } |
| |
| if (gvosTraceData.head == tail) |
| { |
| /* full */ |
| if (MAX_VOS_TRACE_RECORDS == ++gvosTraceData.head) |
| { |
| gvosTraceData.head = 0; |
| } |
| } |
| |
| gvosTraceData.tail = tail; |
| } |
| |
| rec = &gvosTraceTbl[gvosTraceData.tail]; |
| rec->code = code; |
| rec->session = session; |
| rec->data = data; |
| rec->time = vos_timer_get_system_time(); |
| rec->module = module; |
| gvosTraceData.numSinceLastDump ++; |
| spin_unlock_irqrestore(<raceLock, flags); |
| } |
| |
| |
| /*----------------------------------------------------------------------------- |
| \brief vos_trace_spin_lock_init() - Initializes the lock variable before use |
| |
| This function will be called from vos_preOpen, we will have lock available |
| to use ASAP. |
| ----------------------------------------------------------------------------*/ |
| VOS_STATUS vos_trace_spin_lock_init() |
| { |
| spin_lock_init(<raceLock); |
| |
| return VOS_STATUS_SUCCESS; |
| } |
| |
| /*----------------------------------------------------------------------------- |
| \brief vosTraceRegister() - Registers the call back functions to display the |
| messages in particular format mentioned in these call back functions. |
| |
| this functions should be called by interested module in their init part as |
| we will be ready to register as soon as modules are up. |
| |
| \param moduleID - enum value of module |
| \param vostraceCb - call back functions to display the messages in particular |
| format. |
| ----------------------------------------------------------------------------*/ |
| void vosTraceRegister(VOS_MODULE_ID moduleID, tpvosTraceCb vostraceCb) |
| { |
| vostraceCBTable[moduleID] = vostraceCb; |
| } |
| |
| /*------------------------------------------------------------------------------ |
| \brief vosTraceDumpAll() - Dump data from ring buffer via call back functions |
| registered with VOSS |
| |
| This function will be called up on issueing ioctl call as mentioned following |
| [iwpriv wlan0 dumplog 0 0 <n> <bitmask_of_module>] |
| |
| <n> - number lines to dump starting from tail to head. |
| |
| <bitmask_of_module> - if anybody wants to know how many messages were recorded |
| for particular module/s mentioned by setbit in bitmask from last <n> messages. |
| it is optional, if you don't provide then it will dump everything from buffer. |
| |
| \param pMac - context of particular module |
| \param code - |
| \param session - |
| \param count - number of lines to dump starting from tail to head |
| ----------------------------------------------------------------------------*/ |
| void vosTraceDumpAll(void *pMac, v_U8_t code, v_U8_t session, |
| v_U32_t count, v_U32_t bitmask_of_module) |
| { |
| tvosTraceRecord pRecord; |
| tANI_S32 i, tail; |
| |
| |
| if (!gvosTraceData.enable) |
| { |
| VOS_TRACE( VOS_MODULE_ID_SYS, |
| VOS_TRACE_LEVEL_ERROR, "Tracing Disabled"); |
| return; |
| } |
| |
| VOS_TRACE( VOS_MODULE_ID_SYS, VOS_TRACE_LEVEL_INFO, |
| "Total Records: %d, Head: %d, Tail: %d", |
| gvosTraceData.num, gvosTraceData.head, gvosTraceData.tail); |
| |
| /* Aquire the lock so that only one thread at a time can read the ring buffer */ |
| spin_lock(<raceLock); |
| |
| if (gvosTraceData.head != INVALID_VOS_TRACE_ADDR) |
| { |
| i = gvosTraceData.head; |
| tail = gvosTraceData.tail; |
| |
| if (count) |
| { |
| if (count > gvosTraceData.num) |
| { |
| count = gvosTraceData.num; |
| } |
| if (tail >= (count - 1)) |
| { |
| i = tail - count + 1; |
| } |
| else if (count != MAX_VOS_TRACE_RECORDS) |
| { |
| i = MAX_VOS_TRACE_RECORDS - ((count - 1) - tail); |
| } |
| } |
| |
| pRecord = gvosTraceTbl[i]; |
| /* right now we are not using numSinceLastDump member but in future |
| we might re-visit and use this member to track how many latest |
| messages got added while we were dumping from ring buffer */ |
| gvosTraceData.numSinceLastDump = 0; |
| spin_unlock(<raceLock); |
| for (;;) |
| { |
| if ((code == 0 || (code == pRecord.code)) && |
| (vostraceCBTable[pRecord.module] != NULL)) |
| { |
| if (0 == bitmask_of_module) |
| { |
| vostraceCBTable[pRecord.module](pMac, &pRecord, (v_U16_t)i); |
| } |
| else |
| { |
| if (bitmask_of_module & (1 << pRecord.module)) |
| { |
| vostraceCBTable[pRecord.module](pMac, &pRecord, (v_U16_t)i); |
| } |
| } |
| } |
| |
| if (i == tail) |
| { |
| break; |
| } |
| i += 1; |
| |
| spin_lock(<raceLock); |
| if (MAX_VOS_TRACE_RECORDS == i) |
| { |
| i = 0; |
| pRecord= gvosTraceTbl[0]; |
| } |
| else |
| { |
| pRecord = gvosTraceTbl[i]; |
| } |
| spin_unlock(<raceLock); |
| } |
| } |
| else |
| { |
| spin_unlock(<raceLock); |
| } |
| } |
| |
| /** |
| * vos_register_debug_callback() - stores callback handlers to print |
| * state information |
| */ |
| void vos_register_debug_callback(VOS_MODULE_ID moduleID, |
| tp_vos_state_info_cb vos_state_infocb) |
| { |
| vos_state_info_table[moduleID] = vos_state_infocb; |
| } |
| |
| /** |
| * vos_state_info_dump_all() - it invokes callback of layer which registered |
| * its callback to print its state information. |
| * @cb_context: call back context to be passed |
| */ |
| void vos_state_info_dump_all() |
| { |
| v_U8_t module; |
| |
| for (module = 0; module < VOS_MODULE_ID_MAX; module++) { |
| if (NULL != vos_state_info_table[module]) |
| vos_state_info_table[module](); |
| } |
| } |