// SPDX-License-Identifier: GPL-2.0+ /* * Driver for the National Semiconductor DP83640 PHYTER * * Copyright (C) 2010 OMICRON electronics GmbH */ #define pr_fmt(fmt) … #include <linux/crc32.h> #include <linux/ethtool.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/mii.h> #include <linux/module.h> #include <linux/net_tstamp.h> #include <linux/netdevice.h> #include <linux/if_vlan.h> #include <linux/phy.h> #include <linux/ptp_classify.h> #include <linux/ptp_clock_kernel.h> #include "dp83640_reg.h" #define DP83640_PHY_ID … #define PAGESEL … #define MAX_RXTS … #define N_EXT_TS … #define N_PER_OUT … #define PSF_PTPVER … #define PSF_EVNT … #define PSF_RX … #define PSF_TX … #define EXT_EVENT … #define CAL_EVENT … #define CAL_TRIGGER … #define DP83640_N_PINS … #define MII_DP83640_MICR … #define MII_DP83640_MISR … #define MII_DP83640_MICR_OE … #define MII_DP83640_MICR_IE … #define MII_DP83640_MISR_RHF_INT_EN … #define MII_DP83640_MISR_FHF_INT_EN … #define MII_DP83640_MISR_ANC_INT_EN … #define MII_DP83640_MISR_DUP_INT_EN … #define MII_DP83640_MISR_SPD_INT_EN … #define MII_DP83640_MISR_LINK_INT_EN … #define MII_DP83640_MISR_ED_INT_EN … #define MII_DP83640_MISR_LQ_INT_EN … #define MII_DP83640_MISR_ANC_INT … #define MII_DP83640_MISR_DUP_INT … #define MII_DP83640_MISR_SPD_INT … #define MII_DP83640_MISR_LINK_INT … #define MII_DP83640_MISR_INT_MASK … /* phyter seems to miss the mark by 16 ns */ #define ADJTIME_FIX … #define SKB_TIMESTAMP_TIMEOUT … #if defined(__BIG_ENDIAN) #define ENDIAN_FLAG … #elif defined(__LITTLE_ENDIAN) #define ENDIAN_FLAG … #endif struct dp83640_skb_info { … }; struct phy_rxts { … }; struct phy_txts { … }; struct rxts { … }; struct dp83640_clock; struct dp83640_private { … }; struct dp83640_clock { … }; /* globals */ enum { … }; static int chosen_phy = …; static ushort gpio_tab[GPIO_TABLE_SIZE] = …; module_param(chosen_phy, int, 0444); module_param_array(…); MODULE_PARM_DESC(…) …; MODULE_PARM_DESC(…) …; static void dp83640_gpio_defaults(struct ptp_pin_desc *pd) { … } /* a list of clocks and a mutex to protect it */ static LIST_HEAD(phyter_clocks); static DEFINE_MUTEX(phyter_clocks_lock); static void rx_timestamp_work(struct work_struct *work); /* extended register access functions */ #define BROADCAST_ADDR … static inline int broadcast_write(struct phy_device *phydev, u32 regnum, u16 val) { … } /* Caller must hold extreg_lock. */ static int ext_read(struct phy_device *phydev, int page, u32 regnum) { … } /* Caller must hold extreg_lock. */ static void ext_write(int broadcast, struct phy_device *phydev, int page, u32 regnum, u16 val) { … } /* Caller must hold extreg_lock. */ static int tdr_write(int bc, struct phy_device *dev, const struct timespec64 *ts, u16 cmd) { … } /* convert phy timestamps into driver timestamps */ static void phy2rxts(struct phy_rxts *p, struct rxts *rxts) { … } static u64 phy2txts(struct phy_txts *p) { … } static int periodic_output(struct dp83640_clock *clock, struct ptp_clock_request *clkreq, bool on, int trigger) { … } /* ptp clock methods */ static int ptp_dp83640_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) { … } static int ptp_dp83640_adjtime(struct ptp_clock_info *ptp, s64 delta) { … } static int ptp_dp83640_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) { … } static int ptp_dp83640_settime(struct ptp_clock_info *ptp, const struct timespec64 *ts) { … } static int ptp_dp83640_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *rq, int on) { … } static int ptp_dp83640_verify(struct ptp_clock_info *ptp, unsigned int pin, enum ptp_pin_function func, unsigned int chan) { … } static u8 status_frame_dst[6] = …; static u8 status_frame_src[6] = …; static void enable_status_frames(struct phy_device *phydev, bool on) { … } static bool is_status_frame(struct sk_buff *skb, int type) { … } static int expired(struct rxts *rxts) { … } /* Caller must hold rx_lock. */ static void prune_rx_ts(struct dp83640_private *dp83640) { … } /* synchronize the phyters so they act as one clock */ static void enable_broadcast(struct phy_device *phydev, int init_page, int on) { … } static void recalibrate(struct dp83640_clock *clock) { … } /* time stamping methods */ static inline u16 exts_chan_to_edata(int ch) { … } static int decode_evnt(struct dp83640_private *dp83640, void *data, int len, u16 ests) { … } #define DP83640_PACKET_HASH_LEN … static int match(struct sk_buff *skb, unsigned int type, struct rxts *rxts) { … } static void decode_rxts(struct dp83640_private *dp83640, struct phy_rxts *phy_rxts) { … } static void decode_txts(struct dp83640_private *dp83640, struct phy_txts *phy_txts) { … } static void decode_status_frame(struct dp83640_private *dp83640, struct sk_buff *skb) { … } static void dp83640_free_clocks(void) { … } static void dp83640_clock_init(struct dp83640_clock *clock, struct mii_bus *bus) { … } static int choose_this_phy(struct dp83640_clock *clock, struct phy_device *phydev) { … } static struct dp83640_clock *dp83640_clock_get(struct dp83640_clock *clock) { … } /* * Look up and lock a clock by bus instance. * If there is no clock for this bus, then create it first. */ static struct dp83640_clock *dp83640_clock_get_bus(struct mii_bus *bus) { … } static void dp83640_clock_put(struct dp83640_clock *clock) { … } static int dp83640_soft_reset(struct phy_device *phydev) { … } static int dp83640_config_init(struct phy_device *phydev) { … } static int dp83640_ack_interrupt(struct phy_device *phydev) { … } static int dp83640_config_intr(struct phy_device *phydev) { … } static irqreturn_t dp83640_handle_interrupt(struct phy_device *phydev) { … } static int dp83640_hwtstamp(struct mii_timestamper *mii_ts, struct kernel_hwtstamp_config *cfg, struct netlink_ext_ack *extack) { … } static void rx_timestamp_work(struct work_struct *work) { … } static bool dp83640_rxtstamp(struct mii_timestamper *mii_ts, struct sk_buff *skb, int type) { … } static void dp83640_txtstamp(struct mii_timestamper *mii_ts, struct sk_buff *skb, int type) { … } static int dp83640_ts_info(struct mii_timestamper *mii_ts, struct kernel_ethtool_ts_info *info) { … } static int dp83640_probe(struct phy_device *phydev) { … } static void dp83640_remove(struct phy_device *phydev) { … } static struct phy_driver dp83640_driver = …; static int __init dp83640_init(void) { … } static void __exit dp83640_exit(void) { … } MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(dp83640_exit); static struct mdio_device_id __maybe_unused dp83640_tbl[] = …; MODULE_DEVICE_TABLE(mdio, dp83640_tbl);
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