| /* |
| * Copyright (c) 2014-2017 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. |
| */ |
| |
| /** |
| * DOC: qdf_threads |
| * QCA driver framework (QDF) thread APIs |
| */ |
| |
| /* Include Files */ |
| #include <qdf_threads.h> |
| #include <qdf_types.h> |
| #include <qdf_trace.h> |
| #include <linux/jiffies.h> |
| #include <linux/sched.h> |
| #include <linux/delay.h> |
| #include <linux/interrupt.h> |
| #include <linux/export.h> |
| #include <linux/kthread.h> |
| |
| /* Function declarations and documenation */ |
| |
| /** |
| * qdf_sleep() - sleep |
| * @ms_interval : Number of milliseconds to suspend the current thread. |
| * A value of 0 may or may not cause the current thread to yield. |
| * |
| * This function suspends the execution of the current thread |
| * until the specified time out interval elapses. |
| * |
| * Return: none |
| */ |
| void qdf_sleep(uint32_t ms_interval) |
| { |
| if (in_interrupt()) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s cannot be called from interrupt context!!!", |
| __func__); |
| return; |
| } |
| msleep_interruptible(ms_interval); |
| } |
| EXPORT_SYMBOL(qdf_sleep); |
| |
| /** |
| * qdf_sleep_us() - sleep |
| * @us_interval : Number of microseconds to suspend the current thread. |
| * A value of 0 may or may not cause the current thread to yield. |
| * |
| * This function suspends the execution of the current thread |
| * until the specified time out interval elapses. |
| * |
| * Return : none |
| */ |
| void qdf_sleep_us(uint32_t us_interval) |
| { |
| unsigned long timeout = usecs_to_jiffies(us_interval) + 1; |
| |
| if (in_interrupt()) { |
| QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR, |
| "%s cannot be called from interrupt context!!!", |
| __func__); |
| return; |
| } |
| |
| while (timeout && !signal_pending(current)) |
| timeout = schedule_timeout_interruptible(timeout); |
| } |
| EXPORT_SYMBOL(qdf_sleep_us); |
| |
| /** |
| * qdf_busy_wait() - busy wait |
| * @us_interval : Number of microseconds to busy wait. |
| * |
| * This function places the current thread in busy wait until the specified |
| * time out interval elapses. If the interval is greater than 50us on WM, the |
| * behaviour is undefined. |
| * |
| * Return : none |
| */ |
| void qdf_busy_wait(uint32_t us_interval) |
| { |
| udelay(us_interval); |
| } |
| EXPORT_SYMBOL(qdf_busy_wait); |
| |
| void qdf_set_user_nice(qdf_thread_t *thread, long nice) |
| { |
| set_user_nice(thread, nice); |
| } |
| EXPORT_SYMBOL(qdf_set_user_nice); |
| |
| qdf_thread_t *qdf_create_thread(int (*thread_handler)(void *data), void *data, |
| const char thread_name[]) |
| { |
| return kthread_create(thread_handler, data, thread_name); |
| } |
| EXPORT_SYMBOL(qdf_create_thread); |
| |
| int qdf_wake_up_process(qdf_thread_t *thread) |
| { |
| return wake_up_process(thread); |
| } |
| EXPORT_SYMBOL(qdf_wake_up_process); |