| /* |
| * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved. |
| * |
| * 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. |
| */ |
| |
| /** |
| * DOC: qdf_mc_timer |
| * QCA driver framework timer APIs serialized to MC thread |
| */ |
| |
| /* Include Files */ |
| #include <qdf_debug_domain.h> |
| #include <qdf_mc_timer.h> |
| #include <qdf_lock.h> |
| #include "qdf_lock.h" |
| #include "qdf_list.h" |
| #include "qdf_mem.h" |
| #include <qdf_module.h> |
| #include "qdf_timer.h" |
| |
| /* Preprocessor definitions and constants */ |
| #define LINUX_TIMER_COOKIE 0x12341234 |
| #define LINUX_INVALID_TIMER_COOKIE 0xfeedface |
| #define TMR_INVALID_ID (0) |
| |
| static uint32_t g_qdf_timer_multiplier = 1; |
| |
| inline void qdf_timer_set_multiplier(uint32_t multiplier) |
| { |
| g_qdf_timer_multiplier = multiplier; |
| } |
| qdf_export_symbol(qdf_timer_set_multiplier); |
| |
| inline uint32_t qdf_timer_get_multiplier(void) |
| { |
| return g_qdf_timer_multiplier; |
| } |
| qdf_export_symbol(qdf_timer_get_multiplier); |
| |
| /* Type declarations */ |
| |
| /* Static Variable Definitions */ |
| static unsigned int persistent_timer_count; |
| static qdf_mutex_t persistent_timer_count_lock; |
| |
| static void (*scheduler_timer_callback)(qdf_mc_timer_t *); |
| void qdf_register_mc_timer_callback(void (*callback) (qdf_mc_timer_t *)) |
| { |
| scheduler_timer_callback = callback; |
| } |
| |
| qdf_export_symbol(qdf_register_mc_timer_callback); |
| |
| /* Function declarations and documenation */ |
| |
| /** |
| * qdf_try_allowing_sleep() - clean up timer states after it has been deactivated |
| * @type: timer type |
| * |
| * Clean up timer states after it has been deactivated check and try to allow |
| * sleep after a timer has been stopped or expired. |
| * |
| * Return: none |
| */ |
| void qdf_try_allowing_sleep(QDF_TIMER_TYPE type) |
| { |
| if (QDF_TIMER_TYPE_WAKE_APPS == type) { |
| |
| persistent_timer_count--; |
| if (0 == persistent_timer_count) { |
| /* since the number of persistent timers has |
| * decreased from 1 to 0, the timer should allow |
| * sleep |
| */ |
| } |
| } |
| } |
| qdf_export_symbol(qdf_try_allowing_sleep); |
| |
| /** |
| * qdf_mc_timer_get_current_state() - get the current state of the timer |
| * @timer: Pointer to timer object |
| * |
| * Return: |
| * QDF_TIMER_STATE - qdf timer state |
| */ |
| QDF_TIMER_STATE qdf_mc_timer_get_current_state(qdf_mc_timer_t *timer) |
| { |
| if (!timer) { |
| QDF_ASSERT(0); |
| return QDF_TIMER_STATE_UNUSED; |
| } |
| |
| switch (timer->state) { |
| case QDF_TIMER_STATE_STOPPED: |
| case QDF_TIMER_STATE_STARTING: |
| case QDF_TIMER_STATE_RUNNING: |
| case QDF_TIMER_STATE_UNUSED: |
| return timer->state; |
| default: |
| QDF_ASSERT(0); |
| return QDF_TIMER_STATE_UNUSED; |
| } |
| } |
| qdf_export_symbol(qdf_mc_timer_get_current_state); |
| |
| /** |
| * qdf_timer_module_init() - initializes a QDF timer module. |
| * |
| * This API initializes the QDF timer module. This needs to be called |
| * exactly once prior to using any QDF timers. |
| * |
| * Return: none |
| */ |
| void qdf_timer_module_init(void) |
| { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "Initializing the QDF MC timer module"); |
| qdf_mutex_create(&persistent_timer_count_lock); |
| } |
| qdf_export_symbol(qdf_timer_module_init); |
| |
| #ifdef TIMER_MANAGER |
| |
| static qdf_list_t qdf_timer_domains[QDF_DEBUG_DOMAIN_COUNT]; |
| static qdf_spinlock_t qdf_timer_list_lock; |
| |
| static inline qdf_list_t *qdf_timer_list_get(enum qdf_debug_domain domain) |
| { |
| return &qdf_timer_domains[domain]; |
| } |
| |
| /** |
| * qdf_mc_timer_manager_init() - initialize QDF debug timer manager |
| * |
| * This API initializes QDF timer debug functionality. |
| * |
| * Return: none |
| */ |
| void qdf_mc_timer_manager_init(void) |
| { |
| int i; |
| |
| for (i = 0; i < QDF_DEBUG_DOMAIN_COUNT; ++i) |
| qdf_list_create(&qdf_timer_domains[i], 1000); |
| qdf_spinlock_create(&qdf_timer_list_lock); |
| } |
| qdf_export_symbol(qdf_mc_timer_manager_init); |
| |
| static void qdf_mc_timer_print_list(qdf_list_t *timers) |
| { |
| QDF_STATUS status; |
| qdf_list_node_t *node; |
| |
| qdf_spin_lock_irqsave(&qdf_timer_list_lock); |
| status = qdf_list_peek_front(timers, &node); |
| while (QDF_IS_STATUS_SUCCESS(status)) { |
| qdf_mc_timer_node_t *timer_node = (qdf_mc_timer_node_t *)node; |
| const char *filename = kbasename(timer_node->file_name); |
| uint32_t line = timer_node->line_num; |
| |
| qdf_spin_unlock_irqrestore(&qdf_timer_list_lock); |
| qdf_err("timer Leak@ File %s, @Line %u", filename, line); |
| qdf_spin_lock_irqsave(&qdf_timer_list_lock); |
| |
| status = qdf_list_peek_next(timers, node, &node); |
| } |
| qdf_spin_unlock_irqrestore(&qdf_timer_list_lock); |
| } |
| |
| void qdf_mc_timer_check_for_leaks(void) |
| { |
| enum qdf_debug_domain current_domain = qdf_debug_domain_get(); |
| qdf_list_t *timers = qdf_timer_list_get(current_domain); |
| |
| if (qdf_list_empty(timers)) |
| return; |
| |
| qdf_err("Timer leaks detected in %s domain!", |
| qdf_debug_domain_name(current_domain)); |
| qdf_mc_timer_print_list(timers); |
| QDF_DEBUG_PANIC("Previously reported timer leaks detected"); |
| } |
| |
| static void qdf_mc_timer_free_leaked_timers(qdf_list_t *timers) |
| { |
| QDF_STATUS status; |
| qdf_list_node_t *node; |
| |
| qdf_spin_lock_irqsave(&qdf_timer_list_lock); |
| status = qdf_list_remove_front(timers, &node); |
| while (QDF_IS_STATUS_SUCCESS(status)) { |
| qdf_mem_free(node); |
| status = qdf_list_remove_front(timers, &node); |
| } |
| qdf_spin_unlock_irqrestore(&qdf_timer_list_lock); |
| } |
| |
| /** |
| * qdf_timer_clean() - clean up QDF timer debug functionality |
| * |
| * This API cleans up QDF timer debug functionality and prints which QDF timers |
| * are leaked. This is called during driver unload. |
| * |
| * Return: none |
| */ |
| static void qdf_timer_clean(void) |
| { |
| bool leaks_detected = false; |
| int i; |
| |
| /* detect and print leaks */ |
| for (i = 0; i < QDF_DEBUG_DOMAIN_COUNT; ++i) { |
| qdf_list_t *timers = &qdf_timer_domains[i]; |
| |
| if (qdf_list_empty(timers)) |
| continue; |
| |
| leaks_detected = true; |
| |
| qdf_err("\nTimer leaks detected in the %s (Id %d) domain!", |
| qdf_debug_domain_name(i), i); |
| qdf_mc_timer_print_list(timers); |
| } |
| |
| /* we're done if there were no leaks */ |
| if (!leaks_detected) |
| return; |
| |
| /* panic, if enabled */ |
| QDF_DEBUG_PANIC("Previously reported timer leaks detected"); |
| |
| /* if we didn't crash, release the leaked timers */ |
| for (i = 0; i < QDF_DEBUG_DOMAIN_COUNT; ++i) |
| qdf_mc_timer_free_leaked_timers(&qdf_timer_domains[i]); |
| } |
| qdf_export_symbol(qdf_timer_clean); |
| |
| /** |
| * qdf_mc_timer_manager_exit() - exit QDF timer debug functionality |
| * |
| * This API exists QDF timer debug functionality |
| * |
| * Return: none |
| */ |
| void qdf_mc_timer_manager_exit(void) |
| { |
| int i; |
| |
| qdf_timer_clean(); |
| |
| for (i = 0; i < QDF_DEBUG_DOMAIN_COUNT; ++i) |
| qdf_list_destroy(&qdf_timer_domains[i]); |
| |
| qdf_spinlock_destroy(&qdf_timer_list_lock); |
| } |
| qdf_export_symbol(qdf_mc_timer_manager_exit); |
| #endif |
| |
| #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0) |
| static void __os_mc_timer_shim(struct timer_list *os_timer) |
| { |
| qdf_mc_timer_platform_t *platform_info_ptr = |
| qdf_container_of(os_timer, |
| qdf_mc_timer_platform_t, |
| timer); |
| qdf_mc_timer_t *timer = qdf_container_of(platform_info_ptr, |
| qdf_mc_timer_t, |
| platform_info); |
| |
| scheduler_timer_callback(timer); |
| } |
| |
| static void qdf_mc_timer_setup(qdf_mc_timer_t *timer, |
| QDF_TIMER_TYPE timer_type) |
| { |
| uint32_t flags = 0; |
| |
| if (QDF_TIMER_TYPE_SW == timer_type) |
| flags |= TIMER_DEFERRABLE; |
| |
| timer_setup(&timer->platform_info.timer, |
| __os_mc_timer_shim, flags); |
| } |
| #else |
| static void __os_mc_timer_shim(unsigned long data) |
| { |
| qdf_mc_timer_t *timer = (qdf_mc_timer_t *)data; |
| |
| scheduler_timer_callback(timer); |
| } |
| |
| static void qdf_mc_timer_setup(qdf_mc_timer_t *timer, |
| QDF_TIMER_TYPE timer_type) |
| { |
| if (QDF_TIMER_TYPE_SW == timer_type) |
| init_timer_deferrable(&timer->platform_info.timer); |
| else |
| init_timer(&timer->platform_info.timer); |
| |
| timer->platform_info.timer.function = __os_mc_timer_shim; |
| timer->platform_info.timer.data = (unsigned long)timer; |
| } |
| #endif |
| /** |
| * qdf_mc_timer_init() - initialize a QDF timer |
| * @timer: Pointer to timer object |
| * @timer_type: Type of timer |
| * @callback: Callback to be called after timer expiry |
| * @ser_data: User data which will be passed to callback function |
| * |
| * This API initializes a QDF timer object. |
| * |
| * qdf_mc_timer_init() initializes a QDF timer object. A timer must be |
| * initialized by calling qdf_mc_timer_initialize() before it may be used in |
| * any other timer functions. |
| * |
| * Attempting to initialize timer that is already initialized results in |
| * a failure. A destroyed timer object can be re-initialized with a call to |
| * qdf_mc_timer_init(). The results of otherwise referencing the object |
| * after it has been destroyed are undefined. |
| * |
| * Calls to QDF timer functions to manipulate the timer such |
| * as qdf_mc_timer_set() will fail if the timer is not initialized or has |
| * been destroyed. Therefore, don't use the timer after it has been |
| * destroyed until it has been re-initialized. |
| * |
| * All callback will be executed within the CDS main thread unless it is |
| * initialized from the Tx thread flow, in which case it will be executed |
| * within the tx thread flow. |
| * |
| * Return: |
| * QDF_STATUS_SUCCESS: timer is initialized successfully |
| * QDF failure status: timer initialization failed |
| */ |
| #ifdef TIMER_MANAGER |
| QDF_STATUS qdf_mc_timer_init_debug(qdf_mc_timer_t *timer, |
| QDF_TIMER_TYPE timer_type, |
| qdf_mc_timer_callback_t callback, |
| void *user_data, char *file_name, |
| uint32_t line_num) |
| { |
| enum qdf_debug_domain current_domain = qdf_debug_domain_get(); |
| qdf_list_t *active_timers = qdf_timer_list_get(current_domain); |
| QDF_STATUS qdf_status; |
| |
| /* check for invalid pointer */ |
| if ((!timer) || (!callback)) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Null params being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| timer->timer_node = qdf_mem_malloc(sizeof(qdf_mc_timer_node_t)); |
| |
| if (!timer->timer_node) { |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_NOMEM; |
| } |
| |
| timer->timer_node->file_name = file_name; |
| timer->timer_node->line_num = line_num; |
| timer->timer_node->qdf_timer = timer; |
| |
| qdf_spin_lock_irqsave(&qdf_timer_list_lock); |
| qdf_status = qdf_list_insert_front(active_timers, |
| &timer->timer_node->node); |
| qdf_spin_unlock_irqrestore(&qdf_timer_list_lock); |
| if (QDF_STATUS_SUCCESS != qdf_status) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Unable to insert node into List qdf_status %d", |
| __func__, qdf_status); |
| } |
| |
| /* set the various members of the timer structure |
| * with arguments passed or with default values |
| */ |
| qdf_spinlock_create(&timer->platform_info.spinlock); |
| qdf_mc_timer_setup(timer, timer_type); |
| timer->callback = callback; |
| timer->user_data = user_data; |
| timer->type = timer_type; |
| timer->platform_info.cookie = LINUX_TIMER_COOKIE; |
| timer->platform_info.thread_id = 0; |
| timer->state = QDF_TIMER_STATE_STOPPED; |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| qdf_export_symbol(qdf_mc_timer_init_debug); |
| #else |
| QDF_STATUS qdf_mc_timer_init(qdf_mc_timer_t *timer, QDF_TIMER_TYPE timer_type, |
| qdf_mc_timer_callback_t callback, |
| void *user_data) |
| { |
| /* check for invalid pointer */ |
| if ((!timer) || (!callback)) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Null params being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| /* set the various members of the timer structure |
| * with arguments passed or with default values |
| */ |
| qdf_spinlock_create(&timer->platform_info.spinlock); |
| qdf_mc_timer_setup(timer, timer_type); |
| timer->callback = callback; |
| timer->user_data = user_data; |
| timer->type = timer_type; |
| timer->platform_info.cookie = LINUX_TIMER_COOKIE; |
| timer->platform_info.thread_id = 0; |
| timer->state = QDF_TIMER_STATE_STOPPED; |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| qdf_export_symbol(qdf_mc_timer_init); |
| #endif |
| |
| /** |
| * qdf_mc_timer_destroy() - destroy QDF timer |
| * @timer: Pointer to timer object |
| * |
| * qdf_mc_timer_destroy() function shall destroy the timer object. |
| * After a successful return from \a qdf_mc_timer_destroy() the timer |
| * object becomes, in effect, uninitialized. |
| * |
| * A destroyed timer object can be re-initialized by calling |
| * qdf_mc_timer_init(). The results of otherwise referencing the object |
| * after it has been destroyed are undefined. |
| * |
| * Calls to QDF timer functions to manipulate the timer, such |
| * as qdf_mc_timer_set() will fail if the lock is destroyed. Therefore, |
| * don't use the timer after it has been destroyed until it has |
| * been re-initialized. |
| * |
| * Return: |
| * QDF_STATUS_SUCCESS - timer is initialized successfully |
| * QDF failure status - timer initialization failed |
| */ |
| #ifdef TIMER_MANAGER |
| QDF_STATUS qdf_mc_timer_destroy(qdf_mc_timer_t *timer) |
| { |
| enum qdf_debug_domain current_domain = qdf_debug_domain_get(); |
| qdf_list_t *active_timers = qdf_timer_list_get(current_domain); |
| QDF_STATUS v_status = QDF_STATUS_SUCCESS; |
| |
| /* check for invalid pointer */ |
| if (!timer) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Null timer pointer being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| /* Check if timer refers to an uninitialized object */ |
| if (LINUX_TIMER_COOKIE != timer->platform_info.cookie) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot destroy uninitialized timer", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| qdf_spin_lock_irqsave(&qdf_timer_list_lock); |
| v_status = qdf_list_remove_node(active_timers, |
| &timer->timer_node->node); |
| qdf_spin_unlock_irqrestore(&qdf_timer_list_lock); |
| if (v_status != QDF_STATUS_SUCCESS) { |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| qdf_mem_free(timer->timer_node); |
| |
| qdf_spin_lock_irqsave(&timer->platform_info.spinlock); |
| |
| switch (timer->state) { |
| |
| case QDF_TIMER_STATE_STARTING: |
| v_status = QDF_STATUS_E_BUSY; |
| break; |
| |
| case QDF_TIMER_STATE_RUNNING: |
| /* Stop the timer first */ |
| del_timer(&(timer->platform_info.timer)); |
| v_status = QDF_STATUS_SUCCESS; |
| break; |
| case QDF_TIMER_STATE_STOPPED: |
| v_status = QDF_STATUS_SUCCESS; |
| break; |
| |
| case QDF_TIMER_STATE_UNUSED: |
| v_status = QDF_STATUS_E_ALREADY; |
| break; |
| |
| default: |
| v_status = QDF_STATUS_E_FAULT; |
| break; |
| } |
| |
| if (QDF_STATUS_SUCCESS == v_status) { |
| timer->platform_info.cookie = LINUX_INVALID_TIMER_COOKIE; |
| timer->state = QDF_TIMER_STATE_UNUSED; |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| qdf_spinlock_destroy(&timer->platform_info.spinlock); |
| return v_status; |
| } |
| |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "%s: Cannot destroy timer in state = %d", __func__, |
| timer->state); |
| QDF_ASSERT(0); |
| |
| return v_status; |
| } |
| qdf_export_symbol(qdf_mc_timer_destroy); |
| |
| #else |
| |
| /** |
| * qdf_mc_timer_destroy() - destroy QDF timer |
| * @timer: Pointer to timer object |
| * |
| * qdf_mc_timer_destroy() function shall destroy the timer object. |
| * After a successful return from \a qdf_mc_timer_destroy() the timer |
| * object becomes, in effect, uninitialized. |
| * |
| * A destroyed timer object can be re-initialized by calling |
| * qdf_mc_timer_init(). The results of otherwise referencing the object |
| * after it has been destroyed are undefined. |
| * |
| * Calls to QDF timer functions to manipulate the timer, such |
| * as qdf_mc_timer_set() will fail if the lock is destroyed. Therefore, |
| * don't use the timer after it has been destroyed until it has |
| * been re-initialized. |
| * |
| * Return: |
| * QDF_STATUS_SUCCESS - timer is initialized successfully |
| * QDF failure status - timer initialization failed |
| */ |
| QDF_STATUS qdf_mc_timer_destroy(qdf_mc_timer_t *timer) |
| { |
| QDF_STATUS v_status = QDF_STATUS_SUCCESS; |
| |
| /* check for invalid pointer */ |
| if (!timer) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Null timer pointer being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_FAULT; |
| } |
| |
| /* check if timer refers to an uninitialized object */ |
| if (LINUX_TIMER_COOKIE != timer->platform_info.cookie) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot destroy uninitialized timer", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| qdf_spin_lock_irqsave(&timer->platform_info.spinlock); |
| |
| switch (timer->state) { |
| |
| case QDF_TIMER_STATE_STARTING: |
| v_status = QDF_STATUS_E_BUSY; |
| break; |
| |
| case QDF_TIMER_STATE_RUNNING: |
| /* Stop the timer first */ |
| del_timer(&(timer->platform_info.timer)); |
| v_status = QDF_STATUS_SUCCESS; |
| break; |
| |
| case QDF_TIMER_STATE_STOPPED: |
| v_status = QDF_STATUS_SUCCESS; |
| break; |
| |
| case QDF_TIMER_STATE_UNUSED: |
| v_status = QDF_STATUS_E_ALREADY; |
| break; |
| |
| default: |
| v_status = QDF_STATUS_E_FAULT; |
| break; |
| } |
| |
| if (QDF_STATUS_SUCCESS == v_status) { |
| timer->platform_info.cookie = LINUX_INVALID_TIMER_COOKIE; |
| timer->state = QDF_TIMER_STATE_UNUSED; |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| return v_status; |
| } |
| |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "%s: Cannot destroy timer in state = %d", __func__, |
| timer->state); |
| QDF_ASSERT(0); |
| |
| return v_status; |
| } |
| qdf_export_symbol(qdf_mc_timer_destroy); |
| #endif |
| |
| /** |
| * qdf_mc_timer_start() - start a QDF timer object |
| * @timer: Pointer to timer object |
| * @expiration_time: Time to expire |
| * |
| * qdf_mc_timer_start() function starts a timer to expire after the |
| * specified interval, thus running the timer callback function when |
| * the interval expires. |
| * |
| * A timer only runs once (a one-shot timer). To re-start the |
| * timer, qdf_mc_timer_start() has to be called after the timer runs |
| * or has been cancelled. |
| * |
| * Return: |
| * QDF_STATUS_SUCCESS: timer is initialized successfully |
| * QDF failure status: timer initialization failed |
| */ |
| QDF_STATUS qdf_mc_timer_start(qdf_mc_timer_t *timer, uint32_t expiration_time) |
| { |
| /* check for invalid pointer */ |
| if (!timer) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s Null timer pointer being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* check if timer refers to an uninitialized object */ |
| if (LINUX_TIMER_COOKIE != timer->platform_info.cookie) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot start uninitialized timer", __func__); |
| QDF_ASSERT(0); |
| |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* check if timer has expiration time less than 10 ms */ |
| if (expiration_time < 10) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot start a timer with expiration less than 10 ms", |
| __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* make sure the remainer of the logic isn't interrupted */ |
| qdf_spin_lock_irqsave(&timer->platform_info.spinlock); |
| |
| /* ensure if the timer can be started */ |
| if (QDF_TIMER_STATE_STOPPED != timer->state) { |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot start timer in state = %d ", __func__, |
| timer->state); |
| return QDF_STATUS_E_ALREADY; |
| } |
| |
| /* start the timer */ |
| mod_timer(&(timer->platform_info.timer), |
| jiffies + qdf_msecs_to_jiffies(expiration_time)); |
| |
| timer->state = QDF_TIMER_STATE_RUNNING; |
| |
| /* get the thread ID on which the timer is being started */ |
| timer->platform_info.thread_id = current->pid; |
| |
| if (QDF_TIMER_TYPE_WAKE_APPS == timer->type) { |
| persistent_timer_count++; |
| if (1 == persistent_timer_count) { |
| /* since we now have one persistent timer, |
| * we need to disallow sleep |
| * sleep_negate_okts(sleep_client_handle); |
| */ |
| } |
| } |
| |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| qdf_export_symbol(qdf_mc_timer_start); |
| |
| /** |
| * qdf_mc_timer_stop() - stop a QDF timer |
| * @timer: Pointer to timer object |
| * qdf_mc_timer_stop() function stops a timer that has been started but |
| * has not expired, essentially cancelling the 'start' request. |
| * |
| * After a timer is stopped, it goes back to the state it was in after it |
| * was created and can be started again via a call to qdf_mc_timer_start(). |
| * |
| * Return: |
| * QDF_STATUS_SUCCESS: timer is initialized successfully |
| * QDF failure status: timer initialization failed |
| */ |
| QDF_STATUS qdf_mc_timer_stop(qdf_mc_timer_t *timer) |
| { |
| /* check for invalid pointer */ |
| if (!timer) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s Null timer pointer being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* check if timer refers to an uninitialized object */ |
| if (LINUX_TIMER_COOKIE != timer->platform_info.cookie) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot stop uninitialized timer", __func__); |
| QDF_ASSERT(0); |
| |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* ensure the timer state is correct */ |
| qdf_spin_lock_irqsave(&timer->platform_info.spinlock); |
| |
| if (QDF_TIMER_STATE_RUNNING != timer->state) { |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "%s: Cannot stop timer in state = %d", |
| __func__, timer->state); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| timer->state = QDF_TIMER_STATE_STOPPED; |
| |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| |
| del_timer(&(timer->platform_info.timer)); |
| |
| qdf_try_allowing_sleep(timer->type); |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| qdf_export_symbol(qdf_mc_timer_stop); |
| |
| QDF_STATUS qdf_mc_timer_stop_sync(qdf_mc_timer_t *timer) |
| { |
| /* check for invalid pointer */ |
| if (!timer) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s Null timer pointer being passed", __func__); |
| QDF_ASSERT(0); |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* check if timer refers to an uninitialized object */ |
| if (LINUX_TIMER_COOKIE != timer->platform_info.cookie) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s: Cannot stop uninitialized timer", __func__); |
| QDF_ASSERT(0); |
| |
| return QDF_STATUS_E_INVAL; |
| } |
| |
| /* ensure the timer state is correct */ |
| qdf_spin_lock_irqsave(&timer->platform_info.spinlock); |
| |
| if (QDF_TIMER_STATE_RUNNING != timer->state) { |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "%s: Cannot stop timer in state = %d", |
| __func__, timer->state); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| timer->state = QDF_TIMER_STATE_STOPPED; |
| |
| qdf_spin_unlock_irqrestore(&timer->platform_info.spinlock); |
| del_timer_sync(&(timer->platform_info.timer)); |
| |
| qdf_try_allowing_sleep(timer->type); |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| qdf_export_symbol(qdf_mc_timer_stop_sync); |
| /** |
| * qdf_mc_timer_get_system_ticks() - get the system time in 10ms ticks |
| |
| * qdf_mc_timer_get_system_ticks() function returns the current number |
| * of timer ticks in 10msec intervals. This function is suitable timestamping |
| * and calculating time intervals by calculating the difference between two |
| * timestamps. |
| * |
| * Return: |
| * The current system tick count (in 10msec intervals). This |
| * function cannot fail. |
| */ |
| unsigned long qdf_mc_timer_get_system_ticks(void) |
| { |
| return jiffies_to_msecs(jiffies) / 10; |
| } |
| qdf_export_symbol(qdf_mc_timer_get_system_ticks); |
| |
| /** |
| * qdf_mc_timer_get_system_time() - Get the system time in milliseconds |
| * |
| * qdf_mc_timer_get_system_time() function returns the number of milliseconds |
| * that have elapsed since the system was started |
| * |
| * Return: |
| * The current system time in milliseconds |
| */ |
| unsigned long qdf_mc_timer_get_system_time(void) |
| { |
| struct timeval tv; |
| |
| do_gettimeofday(&tv); |
| return tv.tv_sec * 1000 + tv.tv_usec / 1000; |
| } |
| qdf_export_symbol(qdf_mc_timer_get_system_time); |
| |
| s64 qdf_get_monotonic_boottime_ns(void) |
| { |
| struct timespec ts; |
| |
| get_monotonic_boottime(&ts); |
| |
| return timespec_to_ns(&ts); |
| } |
| qdf_export_symbol(qdf_get_monotonic_boottime_ns); |
| |
| qdf_time_t qdf_get_time_of_the_day_ms(void) |
| { |
| struct timeval tv; |
| qdf_time_t local_time; |
| struct rtc_time tm; |
| |
| do_gettimeofday(&tv); |
| local_time = (qdf_time_t)(tv.tv_sec - (sys_tz.tz_minuteswest * 60)); |
| rtc_time_to_tm(local_time, &tm); |
| |
| return (tm.tm_hour * 60 * 60 * 1000) + |
| (tm.tm_min * 60 * 1000) + (tm.tm_sec * 1000) + |
| (tv.tv_usec / 1000); |
| } |
| qdf_export_symbol(qdf_get_time_of_the_day_ms); |
| |
| /** |
| * qdf_timer_module_deinit() - Deinitializes a QDF timer module. |
| * |
| * This API deinitializes the QDF timer module. |
| * Return: none |
| */ |
| void qdf_timer_module_deinit(void) |
| { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_INFO_HIGH, |
| "De-Initializing the QDF MC timer module"); |
| qdf_mutex_destroy(&persistent_timer_count_lock); |
| } |
| qdf_export_symbol(qdf_timer_module_deinit); |
| |
| void qdf_get_time_of_the_day_in_hr_min_sec_usec(char *tbuf, int len) |
| { |
| struct timeval tv; |
| struct rtc_time tm; |
| unsigned long local_time; |
| |
| /* Format the Log time R#: [hr:min:sec.microsec] */ |
| do_gettimeofday(&tv); |
| /* Convert rtc to local time */ |
| local_time = (u32)(tv.tv_sec - (sys_tz.tz_minuteswest * 60)); |
| rtc_time_to_tm(local_time, &tm); |
| scnprintf(tbuf, len, |
| "[%02d:%02d:%02d.%06lu]", |
| tm.tm_hour, tm.tm_min, tm.tm_sec, tv.tv_usec); |
| } |
| qdf_export_symbol(qdf_get_time_of_the_day_in_hr_min_sec_usec); |