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sfc: Add support for IEEE-1588 PTP

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Add PTP IEEE-1588 support and make accesible via the PHC subsystem.

This work is based on prior code by Andrew Jackson

Signed-off-by: Stuart Hodgson <smhodgson@solarflare.com>
[bwh:
 - Add byte order conversion in efx_ptp_send_times()
 - Simplify conversion of PPS event times
 - Add the built-in vs module check to CONFIG_SFC_PTP dependencies]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Stuart Hodgson
2012-09-03 11:09:36 +01:00
committed by Ben Hutchings
parent 576eda8b08
commit 7c236c43b8
11 changed files with 1562 additions and 1 deletions
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19
drivers/net/ethernet/sfc/net_driver.h
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@ -56,7 +56,8 @@
#define EFX_MAX_CHANNELS 32U
#define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS
#define EFX_EXTRA_CHANNEL_IOV 0
#define EFX_MAX_EXTRA_CHANNELS 1U
#define EFX_EXTRA_CHANNEL_PTP 1
#define EFX_MAX_EXTRA_CHANNELS 2U
/* Checksum generation is a per-queue option in hardware, so each
* queue visible to the networking core is backed by two hardware TX
@ -68,6 +69,9 @@
#define EFX_TXQ_TYPES 4
#define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CHANNELS)
/* Forward declare Precision Time Protocol (PTP) support structure. */
struct efx_ptp_data;
struct efx_self_tests;
/**
@ -736,6 +740,7 @@ struct vfdi_status;
* %local_addr_list. Protected by %local_lock.
* @local_lock: Mutex protecting %local_addr_list and %local_page_list.
* @peer_work: Work item to broadcast peer addresses to VMs.
* @ptp_data: PTP state data
* @monitor_work: Hardware monitor workitem
* @biu_lock: BIU (bus interface unit) lock
* @last_irq_cpu: Last CPU to handle a possible test interrupt. This
@ -863,6 +868,10 @@ struct efx_nic {
struct work_struct peer_work;
#endif
#ifdef CONFIG_SFC_PTP
struct efx_ptp_data *ptp_data;
#endif
/* The following fields may be written more often */
struct delayed_work monitor_work ____cacheline_aligned_in_smp;
@ -1125,5 +1134,13 @@ static inline void clear_bit_le(unsigned nr, unsigned char *addr)
#define EFX_MAX_FRAME_LEN(mtu) \
((((mtu) + ETH_HLEN + VLAN_HLEN + 4/* FCS */ + 7) & ~7) + 16)
static inline bool efx_xmit_with_hwtstamp(struct sk_buff *skb)
{
return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP;
}
static inline void efx_xmit_hwtstamp_pending(struct sk_buff *skb)
{
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
}
#endif /* EFX_NET_DRIVER_H */