1/* SPDX-License-Identifier: GPL-2.0-only */
  2/* Copyright(c) 2023 Intel Corporation */
  3
  4#ifndef ADF_HEARTBEAT_H_
  5#define ADF_HEARTBEAT_H_
  6
  7#include <linux/types.h>
  8
  9struct adf_accel_dev;
 10struct dentry;
 11
 12#define ADF_CFG_HB_TIMER_MIN_MS 200
 13#define ADF_CFG_HB_TIMER_DEFAULT_MS 500
 14#define ADF_CFG_HB_COUNT_THRESHOLD 3
 15
 16#define ADF_CFG_HB_RESET_MS 5000
 17
 18enum adf_device_heartbeat_status {
 19	HB_DEV_UNRESPONSIVE = 0,
 20	HB_DEV_ALIVE,
 21	HB_DEV_UNSUPPORTED,
 22};
 23
 24/* Heartbeat counter pair */
 25struct hb_cnt_pair {
 26	__u16 resp_heartbeat_cnt;
 27	__u16 req_heartbeat_cnt;
 28};
 29
 30struct adf_heartbeat {
 31	unsigned int hb_sent_counter;
 32	unsigned int hb_failed_counter;
 33	unsigned int hb_timer;
 34	u64 last_hb_check_time;
 35	u64 last_hb_reset_time;
 36	bool ctrs_cnt_checked;
 37	struct hb_dma_addr {
 38		dma_addr_t phy_addr;
 39		void *virt_addr;
 40	} dma;
 41	struct {
 42		struct dentry *base_dir;
 43		struct dentry *status;
 44		struct dentry *cfg;
 45		struct dentry *sent;
 46		struct dentry *failed;
 47#ifdef CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION
 48		struct dentry *inject_error;
 49#endif
 50	} dbgfs;
 51};
 52
 53#ifdef CONFIG_DEBUG_FS
 54int adf_heartbeat_init(struct adf_accel_dev *accel_dev);
 55int adf_heartbeat_start(struct adf_accel_dev *accel_dev);
 56void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev);
 57
 58int adf_heartbeat_ms_to_ticks(struct adf_accel_dev *accel_dev, unsigned int time_ms,
 59			      uint32_t *value);
 60int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev,
 61				 unsigned int timer_ms);
 62void adf_heartbeat_status(struct adf_accel_dev *accel_dev,
 63			  enum adf_device_heartbeat_status *hb_status);
 64void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev);
 65
 66#ifdef CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION
 67int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev);
 68#else
 69static inline int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev)
 70{
 71	return -EPERM;
 72}
 73#endif
 74
 75#else
 76static inline int adf_heartbeat_init(struct adf_accel_dev *accel_dev)
 77{
 78	return 0;
 79}
 80
 81static inline int adf_heartbeat_start(struct adf_accel_dev *accel_dev)
 82{
 83	return 0;
 84}
 85
 86static inline void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev)
 87{
 88}
 89
 90static inline int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev,
 91					       unsigned int timer_ms)
 92{
 93	return 0;
 94}
 95
 96static inline void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev)
 97{
 98}
 99#endif
100#endif /* ADF_HEARTBEAT_H_ */