qcacmn: Add QDF OS abstraction convergence

Converge ADF and CDF API's and move them to
QDF folder. MCL/WIN driver use this QDF converged
module for OS abstraction.

Change-Id: I1d0cdfd8730a5c021aaa50b7dc8549d491d760b3
CRs-Fixed: 981187

1 files changed, 105 insertions, 0 deletions

diff --git a/qdf/linux/src/qdf_threads.c b/qdf/linux/src/qdf_threads.c
new file mode 100644
index 000000000000..758b5db99eb4
--- /dev/null
+++ b/qdf/linux/src/qdf_threads.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2014-2016 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>
+
+/* 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);