| /* |
| * 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: i_qdf_defer.h |
| * This file provides OS dependent deferred API's. |
| */ |
| |
| #ifndef _I_QDF_DEFER_H |
| #define _I_QDF_DEFER_H |
| |
| #include <linux/workqueue.h> |
| #include <linux/interrupt.h> |
| #include <qdf_types.h> |
| #include <qdf_status.h> |
| #include <qdf_trace.h> |
| |
| typedef struct tasklet_struct __qdf_bh_t; |
| typedef struct workqueue_struct __qdf_workqueue_t; |
| |
| /** |
| * __qdf_work_t - wrapper around the real task func |
| * @work: Instance of work |
| * @fn: function pointer to the handler |
| * @arg: pointer to argument |
| */ |
| typedef struct { |
| struct work_struct work; |
| qdf_defer_fn_t fn; |
| void *arg; |
| } __qdf_work_t; |
| |
| extern void __qdf_defer_func(struct work_struct *work); |
| |
| typedef void (*__qdf_bh_fn_t)(unsigned long arg); |
| |
| /** |
| * __qdf_init_work - Initialize a work/task queue, This runs in non-interrupt |
| * context, so can be preempted by H/W & S/W intr |
| * @work: pointer to work |
| * @func: deferred function to run at bottom half non-interrupt context. |
| * @arg: argument for the deferred function |
| * Return: none |
| */ |
| static inline QDF_STATUS |
| __qdf_init_work(__qdf_work_t *work, qdf_defer_fn_t func, void *arg) |
| { |
| work->fn = func; |
| work->arg = arg; |
| INIT_WORK(&work->work, __qdf_defer_func); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_queue_work - Queue the work/task |
| * @wqueue: pointer to workqueue |
| * @work: pointer to work |
| * Return: none |
| */ |
| static inline void |
| __qdf_queue_work(__qdf_workqueue_t *wqueue, __qdf_work_t *work) |
| { |
| queue_work(wqueue, &work->work); |
| } |
| |
| /** |
| * __qdf_sched_work - Schedule a deferred task on non-interrupt context |
| * @work: pointer to work |
| * Retrun: none |
| */ |
| static inline QDF_STATUS __qdf_sched_work(__qdf_work_t *work) |
| { |
| schedule_work(&work->work); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_cancel_work() - Cancel a work |
| * @work: pointer to work |
| * Return: true if work was pending, false otherwise |
| */ |
| static inline bool __qdf_cancel_work(__qdf_work_t *work) |
| { |
| return cancel_work_sync(&work->work); |
| } |
| |
| /** |
| * __qdf_flush_work - Flush a deferred task on non-interrupt context |
| * @work: pointer to work |
| * Return: none |
| */ |
| static inline uint32_t __qdf_flush_work(__qdf_work_t *work) |
| { |
| flush_work(&work->work); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_create_workqueue - create a workqueue, This runs in non-interrupt |
| * context, so can be preempted by H/W & S/W intr |
| * @name: string |
| * Return: pointer of type qdf_workqueue_t |
| */ |
| static inline __qdf_workqueue_t *__qdf_create_workqueue(char *name) |
| { |
| return create_workqueue(name); |
| } |
| |
| /** |
| * __qdf_create_singlethread_workqueue() - create a single threaded workqueue |
| * @name: string |
| * |
| * This API creates a dedicated work queue with a single worker thread to avoid |
| * wasting unnecessary resources when works which needs to be submitted in this |
| * queue are not very critical and frequent. |
| * |
| * Return: pointer of type qdf_workqueue_t |
| */ |
| static inline __qdf_workqueue_t *__qdf_create_singlethread_workqueue(char *name) |
| { |
| return create_singlethread_workqueue(name); |
| } |
| |
| /** |
| * __qdf_alloc_unbound_workqueue - alloc an unbound workqueue |
| * @name: string |
| * |
| * Return: pointer of type qdf_workqueue_t |
| */ |
| static inline __qdf_workqueue_t *__qdf_alloc_unbound_workqueue(char *name) |
| { |
| return alloc_workqueue(name, WQ_UNBOUND, 0); |
| } |
| |
| /** |
| * __qdf_flush_workqueue - flush the workqueue |
| * @wqueue: pointer to workqueue |
| * Return: none |
| */ |
| static inline void __qdf_flush_workqueue(__qdf_workqueue_t *wqueue) |
| { |
| flush_workqueue(wqueue); |
| } |
| |
| /** |
| * __qdf_destroy_workqueue - Destroy the workqueue |
| * @wqueue: pointer to workqueue |
| * Return: none |
| */ |
| static inline void __qdf_destroy_workqueue(__qdf_workqueue_t *wqueue) |
| { |
| destroy_workqueue(wqueue); |
| } |
| |
| /** |
| * __qdf_init_bh - creates the Bottom half deferred handler |
| * @bh: pointer to bottom |
| * @func: deferred function to run at bottom half interrupt context. |
| * @arg: argument for the deferred function |
| * Return: none |
| */ |
| static inline QDF_STATUS |
| __qdf_init_bh(struct tasklet_struct *bh, qdf_defer_fn_t func, void *arg) |
| { |
| tasklet_init(bh, (__qdf_bh_fn_t) func, (unsigned long)arg); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_sched_bh - schedule a bottom half (DPC) |
| * @bh: pointer to bottom |
| * Return: none |
| */ |
| static inline QDF_STATUS __qdf_sched_bh(struct tasklet_struct *bh) |
| { |
| tasklet_schedule(bh); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_disable_work - disable the deferred task (synchronous) |
| * @work: pointer to work |
| * Return: unsigned int |
| */ |
| static inline QDF_STATUS __qdf_disable_work(__qdf_work_t *work) |
| { |
| if (cancel_work_sync(&work->work)) |
| return QDF_STATUS_E_ALREADY; |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qdf_disable_bh - destroy the bh (synchronous) |
| * @bh: pointer to bottom |
| * Return: none |
| */ |
| static inline QDF_STATUS __qdf_disable_bh(struct tasklet_struct *bh) |
| { |
| tasklet_kill(bh); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| #endif /*_I_QDF_DEFER_H*/ |