| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* Copyright(c) 2023 Intel Corporation */ |
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| 3 | |
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| 4 | #ifndef ADF_HEARTBEAT_H_ |
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| 5 | #define ADF_HEARTBEAT_H_ |
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| 6 | |
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| 7 | #include <linux/types.h> |
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| 8 | |
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| 9 | struct adf_accel_dev; |
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| 10 | struct dentry; |
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| 11 | |
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| 12 | #define ADF_CFG_HB_TIMER_MIN_MS 200 |
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| 13 | #define ADF_CFG_HB_TIMER_DEFAULT_MS 500 |
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| 14 | #define ADF_CFG_HB_COUNT_THRESHOLD 3 |
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| 15 | |
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| 16 | #define ADF_CFG_HB_RESET_MS 5000 |
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| 17 | |
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| 18 | enum adf_device_heartbeat_status { |
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| 19 | HB_DEV_UNRESPONSIVE = 0, |
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| 20 | HB_DEV_ALIVE, |
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| 21 | HB_DEV_UNSUPPORTED, |
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| 22 | }; |
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| 23 | |
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| 24 | /* Heartbeat counter pair */ |
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| 25 | struct hb_cnt_pair { |
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| 26 | __u16 resp_heartbeat_cnt; |
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| 27 | __u16 req_heartbeat_cnt; |
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| 28 | }; |
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| 29 | |
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| 30 | struct adf_heartbeat { |
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| 31 | unsigned int hb_sent_counter; |
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| 32 | unsigned int hb_failed_counter; |
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| 33 | unsigned int hb_timer; |
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| 34 | u64 last_hb_check_time; |
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| 35 | u64 last_hb_reset_time; |
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| 36 | bool ctrs_cnt_checked; |
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| 37 | struct hb_dma_addr { |
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| 38 | dma_addr_t phy_addr; |
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| 39 | void *virt_addr; |
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| 40 | } dma; |
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| 41 | struct { |
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| 42 | struct dentry *base_dir; |
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| 43 | struct dentry *status; |
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| 44 | struct dentry *cfg; |
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| 45 | struct dentry *sent; |
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| 46 | struct dentry *failed; |
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| 47 | #ifdef CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION |
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| 48 | struct dentry *inject_error; |
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| 49 | #endif |
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| 50 | } dbgfs; |
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| 51 | }; |
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| 52 | |
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| 53 | #ifdef CONFIG_DEBUG_FS |
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| 54 | int adf_heartbeat_init(struct adf_accel_dev *accel_dev); |
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| 55 | int adf_heartbeat_start(struct adf_accel_dev *accel_dev); |
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| 56 | void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev); |
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| 57 | |
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| 58 | int adf_heartbeat_ms_to_ticks(struct adf_accel_dev *accel_dev, unsigned int time_ms, |
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| 59 | uint32_t *value); |
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| 60 | int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev, |
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| 61 | unsigned int timer_ms); |
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| 62 | void adf_heartbeat_status(struct adf_accel_dev *accel_dev, |
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| 63 | enum adf_device_heartbeat_status *hb_status); |
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| 64 | void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev); |
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| 65 | |
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| 66 | #ifdef CONFIG_CRYPTO_DEV_QAT_ERROR_INJECTION |
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| 67 | int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev); |
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| 68 | #else |
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| 69 | static inline int adf_heartbeat_inject_error(struct adf_accel_dev *accel_dev) |
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| 70 | { |
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| 71 | return -EPERM; |
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| 72 | } |
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| 73 | #endif |
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| 74 | |
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| 75 | #else |
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| 76 | static inline int adf_heartbeat_init(struct adf_accel_dev *accel_dev) |
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| 77 | { |
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| 78 | return 0; |
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| 79 | } |
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| 80 | |
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| 81 | static inline int adf_heartbeat_start(struct adf_accel_dev *accel_dev) |
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| 82 | { |
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| 83 | return 0; |
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| 84 | } |
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| 85 | |
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| 86 | static inline void adf_heartbeat_shutdown(struct adf_accel_dev *accel_dev) |
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| 87 | { |
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| 88 | } |
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| 89 | |
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| 90 | static inline int adf_heartbeat_save_cfg_param(struct adf_accel_dev *accel_dev, |
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| 91 | unsigned int timer_ms) |
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| 92 | { |
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| 93 | return 0; |
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| 94 | } |
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| 95 | |
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| 96 | static inline void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev) |
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| 97 | { |
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| 98 | } |
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| 99 | #endif |
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| 100 | #endif /* ADF_HEARTBEAT_H_ */ |
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| 101 | |
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