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/*
* drivers/net/fec_1588.h
*
* Copyright (C) 2011-2012 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 FEC_1588_H
#define FEC_1588_H
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/circ_buf.h>
#define FALSE 0
#define TRUE 1
/* FEC 1588 register bits */
#define FEC_T_CTRL_SLAVE 0x00002000
#define FEC_T_CTRL_CAPTURE 0x00000800
#define FEC_T_CTRL_RESTART 0x00000200
#define FEC_T_CTRL_PERIOD_RST 0x00000030
#define FEC_T_CTRL_ENABLE 0x00000001
#define FEC_T_INC_MASK 0x0000007f
#define FEC_T_INC_OFFSET 0
#define FEC_T_INC_CORR_MASK 0x00007f00
#define FEC_T_INC_CORR_OFFSET 8
#define FEC_T_INC_50MHZ 20
#define FEC_ATIME_50MHZ 50000000
#define FEC_T_INC_CLK FEC_T_INC_50MHZ
#define FEC_ATIME_CLK FEC_ATIME_50MHZ
#define FEC_T_PERIOD_ONE_SEC 0x3B9ACA00
/* IEEE 1588 definition */
#define FEC_ECNTRL_TS_EN 0x10
#define DEFAULT_PTP_RX_BUF_SZ 64
#define DEFAULT_PTP_TX_BUF_SZ 64
/* 1588stack API defines */
#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_RTC_TIME (SIOCDEVPRIVATE + 6)
#define PTP_GET_CURRENT_TIME (SIOCDEVPRIVATE + 7)
#define PTP_SET_COMPENSATION (SIOCDEVPRIVATE + 9)
#define PTP_GET_ORIG_COMP (SIOCDEVPRIVATE + 10)
#define PTP_FLUSH_TIMESTAMP (SIOCDEVPRIVATE + 11)
/* IEEE1588 ptp head format */
#define PTP_CTRL_OFFS 0x52
#define PTP_SOURCE_PORT_LENGTH 10
#define PTP_HEADER_SEQ_OFFS 30
#define PTP_HEADER_CTL_OFFS 32
#define PTP_SPID_OFFS 20
#define PTP_HEADER_SZE 34
#define PTP_EVENT_PORT 0x013F
#define FEC_VLAN_TAG_LEN 0x04
#define FEC_ETHTYPE_LEN 0x02
/* 1588-2008 network protocol enumeration values */
#define FEC_PTP_PROT_IPV4 1
#define FEC_PTP_PROT_IPV6 2
#define FEC_PTP_PROT_802_3 3
#define FEC_PTP_PROT_DONTCARE 0xFFFF
#define FEC_PACKET_TYPE_UDP 0x11
#define FEC_PTP_ORIG_COMP 0x15555555
#define FEC_PTP_SPINNER_2 2
#define FEC_PTP_SPINNER_4 4
/* PTP standard time representation structure */
struct ptp_time{
u64 sec; /* seconds */
u32 nsec; /* nanoseconds */
};
/* struct needed to identify a timestamp */
struct fec_ptp_ident {
u8 version;
u8 message_type;
u16 netw_prot;
u16 seq_id;
u8 spid[10];
};
/* interface for PTP driver command GET_TX_TIME */
struct fec_ptp_ts_data {
struct fec_ptp_ident ident;
/* PTP timestamp */
struct ptp_time ts;
};
/* circular buffer for ptp timestamps over ioctl */
struct fec_ptp_circular {
int front;
int end;
int size;
struct fec_ptp_ts_data *data_buf;
};
/* interface for PTP driver command SET_RTC_TIME/GET_CURRENT_TIME */
struct ptp_rtc_time {
struct ptp_time rtc_time;
};
/* interface for PTP driver command SET_COMPENSATION */
struct ptp_set_comp {
u32 drift;
bool o_ops;
u32 freq_compensation;
};
/* interface for PTP driver command GET_ORIG_COMP */
struct ptp_get_comp {
/* the initial compensation value */
u32 dw_origcomp;
/* the minimum compensation value */
u32 dw_mincomp;
/*the max compensation value*/
u32 dw_maxcomp;
/*the min drift applying min compensation value in ppm*/
u32 dw_mindrift;
/*the max drift applying max compensation value in ppm*/
u32 dw_maxdrift;
};
struct ptp_time_correct {
u32 corr_period;
u32 corr_inc;
};
/* PTP message version */
#define PTP_1588_MSG_VER_1 1
#define PTP_1588_MSG_VER_2 2
#define BD_ENET_TX_TS 0x20000000
#define BD_ENET_TX_BDU 0x80000000
struct fec_ptp_private {
void __iomem *hwp;
int dev_id;
struct fec_ptp_circular tx_timestamps;
struct fec_ptp_circular rx_timestamps;
spinlock_t cnt_lock;
u64 prtc;
u8 ptp_active;
u8 ptp_slave;
struct circ_buf txstamp;
};
#ifdef CONFIG_FEC_1588
static inline int fec_ptp_malloc_priv(struct fec_ptp_private **priv)
{
*priv = kzalloc(sizeof(struct fec_ptp_private), GFP_KERNEL);
return 1;
}
extern int fec_ptp_init(struct fec_ptp_private *priv, int id);
extern void fec_ptp_cleanup(struct fec_ptp_private *priv);
extern int fec_ptp_start(struct fec_ptp_private *priv);
extern void fec_ptp_stop(struct fec_ptp_private *priv);
extern int fec_ptp_do_txstamp(struct sk_buff *skb);
extern void fec_ptp_store_txstamp(struct fec_ptp_private *priv,
struct sk_buff *skb,
struct bufdesc *bdp);
extern void fec_ptp_store_rxstamp(struct fec_ptp_private *priv,
struct sk_buff *skb,
struct bufdesc *bdp);
extern int fec_ptp_ioctl(struct fec_ptp_private *priv,
struct ifreq *ifr, int cmd);
#else
static inline int fec_ptp_malloc_priv(struct fec_ptp_private **priv)
{
return 0;
}
static inline int fec_ptp_init(struct fec_ptp_private *priv, int id)
{
return 1;
}
static inline void fec_ptp_cleanup(struct fec_ptp_private *priv) { }
static inline int fec_ptp_start(struct fec_ptp_private *priv)
{
return 1;
}
static inline void fec_ptp_stop(struct fec_ptp_private *priv) {}
static inline int fec_ptp_do_txstamp(struct sk_buff *skb)
{
return 0;
}
static inline void fec_ptp_store_txstamp(struct fec_ptp_private *priv,
struct sk_buff *skb,
struct bufdesc *bdp) {}
static inline void fec_ptp_store_rxstamp(struct fec_ptp_private *priv,
struct sk_buff *skb,
struct bufdesc *bdp) {}
static inline int fec_ptp_ioctl(struct fec_ptp_private *priv,
struct ifreq *ifr, int cmd)
{
return 0;
}
#endif /* 1588 */
#endif
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