1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_timer.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_timer.c
new file mode 100644
index 000000000000..646c57922fcd
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_timer.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2023 Intel Corporation */
+
+#include <linux/container_of.h>
+#include <linux/dev_printk.h>
+#include <linux/export.h>
+#include <linux/jiffies.h>
+#include <linux/ktime.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_gen4_timer.h"
+
+#define ADF_GEN4_TIMER_PERIOD_MS 200
+
+/* This periodic update is used to trigger HB, RL & TL fw events */
+static void work_handler(struct work_struct *work)
+{
+	struct adf_accel_dev *accel_dev;
+	struct adf_timer *timer_ctx;
+	u32 time_periods;
+
+	timer_ctx = container_of(to_delayed_work(work), struct adf_timer, work_ctx);
+	accel_dev = timer_ctx->accel_dev;
+
+	adf_misc_wq_queue_delayed_work(&timer_ctx->work_ctx,
+				       msecs_to_jiffies(ADF_GEN4_TIMER_PERIOD_MS));
+
+	time_periods = div_u64(ktime_ms_delta(ktime_get_real(), timer_ctx->initial_ktime),
+			       ADF_GEN4_TIMER_PERIOD_MS);
+
+	if (adf_send_admin_tim_sync(accel_dev, time_periods))
+		dev_err(&GET_DEV(accel_dev), "Failed to synchronize qat timer\n");
+}
+
+int adf_gen4_timer_start(struct adf_accel_dev *accel_dev)
+{
+	struct adf_timer *timer_ctx;
+
+	timer_ctx = kzalloc(sizeof(*timer_ctx), GFP_KERNEL);
+	if (!timer_ctx)
+		return -ENOMEM;
+
+	timer_ctx->accel_dev = accel_dev;
+	accel_dev->timer = timer_ctx;
+	timer_ctx->initial_ktime = ktime_get_real();
+
+	INIT_DELAYED_WORK(&timer_ctx->work_ctx, work_handler);
+	adf_misc_wq_queue_delayed_work(&timer_ctx->work_ctx,
+				       msecs_to_jiffies(ADF_GEN4_TIMER_PERIOD_MS));
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_gen4_timer_start);
+
+void adf_gen4_timer_stop(struct adf_accel_dev *accel_dev)
+{
+	struct adf_timer *timer_ctx = accel_dev->timer;
+
+	if (!timer_ctx)
+		return;
+
+	cancel_delayed_work_sync(&timer_ctx->work_ctx);
+
+	kfree(timer_ctx);
+	accel_dev->timer = NULL;
+}
+EXPORT_SYMBOL_GPL(adf_gen4_timer_stop);