1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/adf_heartbeat.h b/drivers/crypto/intel/qat/qat_common/adf_heartbeat.h
new file mode 100644
index 000000000000..b22e3cb29798
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_heartbeat.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2023 Intel Corporation */
+
+#ifndef ADF_HEARTBEAT_H_
+#define ADF_HEARTBEAT_H_
+
+#include <linux/types.h>
+
+struct adf_accel_dev;
+struct dentry;
+
+#define ADF_CFG_HB_TIMER_MIN_MS 200
+#define ADF_CFG_HB_TIMER_DEFAULT_MS 500
+#define ADF_CFG_HB_COUNT_THRESHOLD 3
+
+enum adf_device_heartbeat_status {
+	HB_DEV_UNRESPONSIVE = 0,
+	HB_DEV_ALIVE,
+	HB_DEV_UNSUPPORTED,
+};
+
+struct adf_heartbeat {
+	unsigned int hb_sent_counter;
+	unsigned int hb_failed_counter;
+	unsigned int hb_timer;
+	u64 last_hb_check_time;
+	bool ctrs_cnt_checked;
+	struct hb_dma_addr {
+		dma_addr_t phy_addr;
+		void *virt_addr;
+	} dma;
+	struct {
+		struct dentry *base_dir;
+		struct dentry *status;
+		struct dentry *cfg;
+		struct dentry *sent;
+		struct dentry *failed;
+	} dbgfs;
+};
+
+#ifdef CONFIG_DEBUG_FS
+int adf_heartbeat_init(struct adf_accel_dev *accel_dev);
+int adf_heartbeat_start(struct adf_accel_dev *accel_dev);
+void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev);
+
+int adf_heartbeat_ms_to_ticks(struct adf_accel_dev *accel_dev, unsigned int time_ms,
+			      uint32_t *value);
+int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev,
+				 unsigned int timer_ms);
+void adf_heartbeat_status(struct adf_accel_dev *accel_dev,
+			  enum adf_device_heartbeat_status *hb_status);
+void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev);
+
+#else
+static inline int adf_heartbeat_init(struct adf_accel_dev *accel_dev)
+{
+	return 0;
+}
+
+static inline int adf_heartbeat_start(struct adf_accel_dev *accel_dev)
+{
+	return 0;
+}
+
+static inline void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev)
+{
+}
+
+static inline int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev,
+					       unsigned int timer_ms)
+{
+	return 0;
+}
+
+static inline void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev)
+{
+}
+#endif
+#endif /* ADF_HEARTBEAT_H_ */