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 9 struct adf_accel_dev; 10 struct 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 18 enum adf_device_heartbeat_status { 19 HB_DEV_UNRESPONSIVE = 0, 20 HB_DEV_ALIVE, 21 HB_DEV_UNSUPPORTED, 22 }; 23 24 /* Heartbeat counter pair */ 25 struct hb_cnt_pair { 26 __u16 resp_heartbeat_cnt; 27 __u16 req_heartbeat_cnt; 28 }; 29 30 struct 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 54 int adf_heartbeat_init(struct adf_accel_dev *accel_dev); 55 int adf_heartbeat_start(struct adf_accel_dev *accel_dev); 56 void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev); 57 58 int adf_heartbeat_ms_to_ticks(struct adf_accel_dev *accel_dev, unsigned int time_ms, 59 uint32_t *value); 60 int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev, 61 unsigned int timer_ms); 62 void adf_heartbeat_status(struct adf_accel_dev *accel_dev, 63 enum adf_device_heartbeat_status *hb_status); 64 void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev); 65 66 #ifdef CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION 67 int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev); 68 #else adf_heartbeat_inject_error(struct adf_accel_dev * accel_dev)69static inline int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev) 70 { 71 return -EPERM; 72 } 73 #endif 74 75 #else adf_heartbeat_init(struct adf_accel_dev * accel_dev)76static inline int adf_heartbeat_init(struct adf_accel_dev *accel_dev) 77 { 78 return 0; 79 } 80 adf_heartbeat_start(struct adf_accel_dev * accel_dev)81static inline int adf_heartbeat_start(struct adf_accel_dev *accel_dev) 82 { 83 return 0; 84 } 85 adf_heartbeat_shutdown(struct adf_accel_dev * accel_dev)86static inline void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev) 87 { 88 } 89 adf_heartbeat_save_cfg_param(struct adf_accel_dev * accel_dev,unsigned int timer_ms)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 adf_heartbeat_check_ctrs(struct adf_accel_dev * accel_dev)96static inline void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev) 97 { 98 } 99 #endif 100 #endif /* ADF_HEARTBEAT_H_ */ 101