| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|
| 2 | /* Microchip switch tag common header |
|---|
| 3 | * |
|---|
| 4 | * Copyright (C) 2022 Microchip Technology Inc. |
|---|
| 5 | */ |
|---|
| 6 | |
|---|
| 7 | #ifndef _NET_DSA_KSZ_COMMON_H_ |
|---|
| 8 | #define _NET_DSA_KSZ_COMMON_H_ |
|---|
| 9 | |
|---|
| 10 | #include <net/dsa.h> |
|---|
| 11 | |
|---|
| 12 | /* All time stamps from the KSZ consist of 2 bits for seconds and 30 bits for |
|---|
| 13 | * nanoseconds. This is NOT the same as 32 bits for nanoseconds. |
|---|
| 14 | */ |
|---|
| 15 | #define KSZ_TSTAMP_SEC_MASK GENMASK(31, 30) |
|---|
| 16 | #define KSZ_TSTAMP_NSEC_MASK GENMASK(29, 0) |
|---|
| 17 | |
|---|
| 18 | static inline ktime_t ksz_decode_tstamp(u32 tstamp) |
|---|
| 19 | { |
|---|
| 20 | u64 ns = FIELD_GET(KSZ_TSTAMP_SEC_MASK, tstamp) * NSEC_PER_SEC + |
|---|
| 21 | FIELD_GET(KSZ_TSTAMP_NSEC_MASK, tstamp); |
|---|
| 22 | |
|---|
| 23 | return ns_to_ktime(ns); |
|---|
| 24 | } |
|---|
| 25 | |
|---|
| 26 | struct ksz_deferred_xmit_work { |
|---|
| 27 | struct dsa_port *dp; |
|---|
| 28 | struct sk_buff *skb; |
|---|
| 29 | struct kthread_work work; |
|---|
| 30 | }; |
|---|
| 31 | |
|---|
| 32 | struct ksz_tagger_data { |
|---|
| 33 | void (*xmit_work_fn)(struct kthread_work *work); |
|---|
| 34 | void (*hwtstamp_set_state)(struct dsa_switch *ds, bool on); |
|---|
| 35 | }; |
|---|
| 36 | |
|---|
| 37 | struct ksz_skb_cb { |
|---|
| 38 | struct sk_buff *clone; |
|---|
| 39 | unsigned int ptp_type; |
|---|
| 40 | bool update_correction; |
|---|
| 41 | u32 tstamp; |
|---|
| 42 | }; |
|---|
| 43 | |
|---|
| 44 | #define KSZ_SKB_CB(skb) \ |
|---|
| 45 | ((struct ksz_skb_cb *)((skb)->cb)) |
|---|
| 46 | |
|---|
| 47 | static inline struct ksz_tagger_data * |
|---|
| 48 | ksz_tagger_data(struct dsa_switch *ds) |
|---|
| 49 | { |
|---|
| 50 | return ds->tagger_data; |
|---|
| 51 | } |
|---|
| 52 | |
|---|
| 53 | #endif /* _NET_DSA_KSZ_COMMON_H_ */ |
|---|
| 54 | |
|---|
