e2980ba57e
The QAT hardware does not expose a mechanism to report its clock frequency. This is required to implement the Heartbeat feature. Add a clock measuring algorithm that estimates the frequency by comparing the internal timestamp counter incremented by the firmware with the time measured by the kernel. The frequency value is only used internally and not exposed to the user. Signed-off-by: Damian Muszynski <damian.muszynski@intel.com> Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
14 lines
321 B
C
14 lines
321 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright(c) 2023 Intel Corporation */
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#ifndef ADF_CLOCK_H
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#define ADF_CLOCK_H
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#include <linux/types.h>
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struct adf_accel_dev;
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int adf_dev_measure_clock(struct adf_accel_dev *accel_dev, u32 *frequency,
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u32 min, u32 max);
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u64 adf_clock_get_current_time(void);
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#endif
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