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/* Copyright (C) 2011 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef __DPAA_1588_H__
#define __DPAA_1588_H__
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/circ_buf.h>
#include <linux/fsl_qman.h>
#define DEFAULT_PTP_RX_BUF_SZ 256
#define DEFAULT_PTP_TX_BUF_SZ 256
/* 1588 private ioctl calls */
#define PTP_ENBL_TXTS_IOCTL SIOCDEVPRIVATE
#define PTP_DSBL_TXTS_IOCTL (SIOCDEVPRIVATE + 1)
#define PTP_ENBL_RXTS_IOCTL (SIOCDEVPRIVATE + 2)
#define PTP_DSBL_RXTS_IOCTL (SIOCDEVPRIVATE + 3)
#define PTP_GET_TX_TIMESTAMP (SIOCDEVPRIVATE + 4)
#define PTP_GET_RX_TIMESTAMP (SIOCDEVPRIVATE + 5)
#define PTP_SET_TIME (SIOCDEVPRIVATE + 6)
#define PTP_GET_TIME (SIOCDEVPRIVATE + 7)
#define PTP_SET_FIPER_ALARM (SIOCDEVPRIVATE + 8)
#define PTP_SET_ADJ (SIOCDEVPRIVATE + 9)
#define PTP_GET_ADJ (SIOCDEVPRIVATE + 10)
#define PTP_CLEANUP_TS (SIOCDEVPRIVATE + 11)
/* PTP V2 message type */
enum {
PTP_MSGTYPE_SYNC = 0x0,
PTP_MSGTYPE_DELREQ = 0x1,
PTP_MSGTYPE_PDELREQ = 0x2,
PTP_MSGTYPE_PDELRESP = 0x3,
PTP_MSGTYPE_FLWUP = 0x8,
PTP_MSGTYPE_DELRESP = 0x9,
PTP_MSGTYPE_PDELRES_FLWUP = 0xA,
PTP_MSGTYPE_ANNOUNCE = 0xB,
PTP_MSGTYPE_SGNLNG = 0xC,
PTP_MSGTYPE_MNGMNT = 0xD,
};
/* Byte offset of data in the PTP V2 headers */
#define PTP_OFFS_MSG_TYPE 0
#define PTP_OFFS_VER_PTP 1
#define PTP_OFFS_MSG_LEN 2
#define PTP_OFFS_DOM_NMB 4
#define PTP_OFFS_FLAGS 6
#define PTP_OFFS_CORFIELD 8
#define PTP_OFFS_SRCPRTID 20
#define PTP_OFFS_SEQ_ID 30
#define PTP_OFFS_CTRL 32
#define PTP_OFFS_LOGMEAN 33
#define PTP_IP_OFFS 14
#define PTP_UDP_OFFS 34
#define PTP_HEADER_OFFS 42
#define PTP_MSG_TYPE_OFFS (PTP_HEADER_OFFS + PTP_OFFS_MSG_TYPE)
#define PTP_SPORT_ID_OFFS (PTP_HEADER_OFFS + PTP_OFFS_SRCPRTID)
#define PTP_SEQ_ID_OFFS (PTP_HEADER_OFFS + PTP_OFFS_SEQ_ID)
#define PTP_CTRL_OFFS (PTP_HEADER_OFFS + PTP_OFFS_CTRL)
/* 1588-2008 network protocol enumeration values */
#define DPA_PTP_PROT_IPV4 1
#define DPA_PTP_PROT_IPV6 2
#define DPA_PTP_PROT_802_3 3
#define DPA_PTP_PROT_DONTCARE 0xFFFF
#define DPA_PTP_SOURCE_PORT_LENGTH 10
#define DPA_PTP_HEADER_SZE 34
#define DPA_ETYPE_LEN 2
#define DPA_VLAN_TAG_LEN 4
#define NANOSEC_PER_SECOND 1000000000
/* The threshold between the current found one and the oldest one */
#define TS_ACCUMULATION_THRESHOLD 50
/* Struct needed to identify a timestamp */
struct dpa_ptp_ident {
u8 version;
u8 msg_type;
u16 netw_prot;
u16 seq_id;
u8 snd_port_id[DPA_PTP_SOURCE_PORT_LENGTH];
};
/* Timestamp format in 1588-2008 */
struct dpa_ptp_time {
u64 sec; /* just 48 bit used */
u32 nsec;
};
/* needed for timestamp data over ioctl */
struct dpa_ptp_data {
struct dpa_ptp_ident ident;
struct dpa_ptp_time ts;
};
struct dpa_ptp_circ_buf {
struct circ_buf circ_buf;
u32 size;
spinlock_t ptp_lock;
};
/* PTP TSU control structure */
struct dpa_ptp_tsu {
struct dpa_priv_s *dpa_priv;
bool valid;
struct dpa_ptp_circ_buf rx_timestamps;
struct dpa_ptp_circ_buf tx_timestamps;
/* HW timestamping over ioctl enabled flag */
int hwts_tx_en_ioctl;
int hwts_rx_en_ioctl;
};
extern int dpa_ptp_init(struct dpa_priv_s *priv);
extern void dpa_ptp_cleanup(struct dpa_priv_s *priv);
extern void dpa_ptp_store_txstamp(const struct dpa_priv_s *priv,
struct sk_buff *skb, void *data);
extern void dpa_ptp_store_rxstamp(const struct dpa_priv_s *priv,
struct sk_buff *skb, void *data);
extern int dpa_ioctl_1588(struct net_device *dev, struct ifreq *ifr, int cmd);
#endif
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