1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (c) 2023 Intel Corporation. */
3 #ifndef ADF_TELEMETRY_H
4 #define ADF_TELEMETRY_H
5 
6 #include <linux/bits.h>
7 #include <linux/mutex.h>
8 #include <linux/types.h>
9 #include <linux/workqueue.h>
10 
11 #include "icp_qat_fw_init_admin.h"
12 
13 struct adf_accel_dev;
14 struct adf_tl_dbg_counter;
15 struct dentry;
16 
17 #define ADF_TL_SL_CNT_COUNT		\
18 	(sizeof(struct icp_qat_fw_init_admin_slice_cnt) / sizeof(__u8))
19 
20 #define TL_CAPABILITY_BIT		BIT(1)
21 /* Interval within device writes data to DMA region. Value in milliseconds. */
22 #define ADF_TL_DATA_WR_INTERVAL_MS	1000
23 /* Interval within timer interrupt should be handled. Value in milliseconds. */
24 #define ADF_TL_TIMER_INT_MS		(ADF_TL_DATA_WR_INTERVAL_MS / 2)
25 
26 #define ADF_TL_RP_REGS_DISABLED		(0xff)
27 
28 struct adf_tl_hw_data {
29 	size_t layout_sz;
30 	size_t slice_reg_sz;
31 	size_t rp_reg_sz;
32 	size_t msg_cnt_off;
33 	const struct adf_tl_dbg_counter *dev_counters;
34 	const struct adf_tl_dbg_counter *sl_util_counters;
35 	const struct adf_tl_dbg_counter *sl_exec_counters;
36 	const struct adf_tl_dbg_counter *rp_counters;
37 	u8 num_hbuff;
38 	u8 cpp_ns_per_cycle;
39 	u8 bw_units_to_bytes;
40 	u8 num_dev_counters;
41 	u8 num_rp_counters;
42 	u8 max_rp;
43 	u8 max_sl_cnt;
44 };
45 
46 struct adf_telemetry {
47 	struct adf_accel_dev *accel_dev;
48 	atomic_t state;
49 	u32 hbuffs;
50 	int hb_num;
51 	u32 msg_cnt;
52 	dma_addr_t regs_data_p; /* bus address for DMA mapping */
53 	void *regs_data; /* virtual address for DMA mapping */
54 	/**
55 	 * @regs_hist_buff: array of pointers to copies of the last @hbuffs
56 	 * values of @regs_data
57 	 */
58 	void **regs_hist_buff;
59 	struct dentry *dbg_dir;
60 	u8 *rp_num_indexes;
61 	/**
62 	 * @regs_hist_lock: protects from race conditions between write and read
63 	 * to the copies referenced by @regs_hist_buff
64 	 */
65 	struct mutex regs_hist_lock;
66 	/**
67 	 * @wr_lock: protects from concurrent writes to debugfs telemetry files
68 	 */
69 	struct mutex wr_lock;
70 	struct delayed_work work_ctx;
71 	struct icp_qat_fw_init_admin_slice_cnt slice_cnt;
72 };
73 
74 #ifdef CONFIG_DEBUG_FS
75 int adf_tl_init(struct adf_accel_dev *accel_dev);
76 int adf_tl_start(struct adf_accel_dev *accel_dev);
77 void adf_tl_stop(struct adf_accel_dev *accel_dev);
78 void adf_tl_shutdown(struct adf_accel_dev *accel_dev);
79 int adf_tl_run(struct adf_accel_dev *accel_dev, int state);
80 int adf_tl_halt(struct adf_accel_dev *accel_dev);
81 #else
adf_tl_init(struct adf_accel_dev * accel_dev)82 static inline int adf_tl_init(struct adf_accel_dev *accel_dev)
83 {
84 	return 0;
85 }
86 
adf_tl_start(struct adf_accel_dev * accel_dev)87 static inline int adf_tl_start(struct adf_accel_dev *accel_dev)
88 {
89 	return 0;
90 }
91 
adf_tl_stop(struct adf_accel_dev * accel_dev)92 static inline void adf_tl_stop(struct adf_accel_dev *accel_dev)
93 {
94 }
95 
adf_tl_shutdown(struct adf_accel_dev * accel_dev)96 static inline void adf_tl_shutdown(struct adf_accel_dev *accel_dev)
97 {
98 }
99 #endif /* CONFIG_DEBUG_FS */
100 #endif /* ADF_TELEMETRY_H */
101