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e0ea34158e
The ENA driver will be extended to support the new PHC feature using ptp_clock interface [1]. this will provide timestamp reference for user space to allow measuring time offset between the PHC and the system clock in order to achieve nanosecond accuracy. [1] - https://www.kernel.org/doc/html/latest/driver-api/ptp.html Signed-off-by: Amit Bernstein <amitbern@amazon.com> Signed-off-by: David Arinzon <darinzon@amazon.com> Link: https://patch.msgid.link/20250617110545.5659-2-darinzon@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
37 lines
967 B
C
37 lines
967 B
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright 2015-2022 Amazon.com, Inc. or its affiliates. All rights reserved.
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*/
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#ifndef ENA_PHC_H
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#define ENA_PHC_H
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#include <linux/ptp_clock_kernel.h>
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struct ena_phc_info {
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/* PTP hardware capabilities */
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struct ptp_clock_info clock_info;
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/* Registered PTP clock device */
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struct ptp_clock *clock;
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/* Adapter specific private data structure */
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struct ena_adapter *adapter;
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/* PHC lock */
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spinlock_t lock;
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/* Enabled by kernel */
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bool enabled;
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};
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void ena_phc_enable(struct ena_adapter *adapter, bool enable);
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bool ena_phc_is_enabled(struct ena_adapter *adapter);
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bool ena_phc_is_active(struct ena_adapter *adapter);
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int ena_phc_get_index(struct ena_adapter *adapter);
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int ena_phc_init(struct ena_adapter *adapter);
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void ena_phc_destroy(struct ena_adapter *adapter);
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int ena_phc_alloc(struct ena_adapter *adapter);
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void ena_phc_free(struct ena_adapter *adapter);
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#endif /* ENA_PHC_H */
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