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
 13struct adf_accel_dev;
 14struct adf_tl_dbg_counter;
 15struct 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
 28struct 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
 46struct 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
 75int adf_tl_init(struct adf_accel_dev *accel_dev);
 76int adf_tl_start(struct adf_accel_dev *accel_dev);
 77void adf_tl_stop(struct adf_accel_dev *accel_dev);
 78void adf_tl_shutdown(struct adf_accel_dev *accel_dev);
 79int adf_tl_run(struct adf_accel_dev *accel_dev, int state);
 80int adf_tl_halt(struct adf_accel_dev *accel_dev);
 81#else
 82static inline int adf_tl_init(struct adf_accel_dev *accel_dev)
 83{
 84	return 0;
 85}
 86
 87static inline int adf_tl_start(struct adf_accel_dev *accel_dev)
 88{
 89	return 0;
 90}
 91
 92static inline void adf_tl_stop(struct adf_accel_dev *accel_dev)
 93{
 94}
 95
 96static inline void adf_tl_shutdown(struct adf_accel_dev *accel_dev)
 97{
 98}
 99#endif /* CONFIG_DEBUG_FS */
100#endif /* ADF_TELEMETRY_H */