// SPDX-License-Identifier: GPL-2.0-only /* * PTP 1588 clock using the EG20T PCH * * Copyright (C) 2010 OMICRON electronics GmbH * Copyright (C) 2011-2012 LAPIS SEMICONDUCTOR Co., LTD. * * This code was derived from the IXP46X driver. */ #include <linux/device.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/io-64-nonatomic-lo-hi.h> #include <linux/io-64-nonatomic-hi-lo.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/ptp_clock_kernel.h> #include <linux/ptp_pch.h> #include <linux/slab.h> #define STATION_ADDR_LEN … #define PCI_DEVICE_ID_PCH_1588 … #define IO_MEM_BAR … #define DEFAULT_ADDEND … #define TICKS_NS_SHIFT … #define N_EXT_TS … enum pch_status { … }; /* * struct pch_ts_regs - IEEE 1588 registers */ struct pch_ts_regs { … }; #define PCH_TSC_RESET … #define PCH_TSC_TTM_MASK … #define PCH_TSC_ASMS_MASK … #define PCH_TSC_AMMS_MASK … #define PCH_TSC_PPSM_MASK … #define PCH_TSE_TTIPEND … #define PCH_TSE_SNS … #define PCH_TSE_SNM … #define PCH_TSE_PPS … #define PCH_CC_MM … #define PCH_CC_TA … #define PCH_CC_MODE_SHIFT … #define PCH_CC_MODE_MASK … #define PCH_CC_VERSION … #define PCH_CE_TXS … #define PCH_CE_RXS … #define PCH_CE_OVR … #define PCH_CE_VAL … #define PCH_ECS_ETH … #define PCH_ECS_CAN … #define PCH_IEEE1588_ETH … #define PCH_IEEE1588_CAN … /* * struct pch_dev - Driver private data */ struct pch_dev { … }; /* * struct pch_params - 1588 module parameter */ struct pch_params { … }; /* structure to hold the module parameters */ static struct pch_params pch_param = …; /* * Register access functions */ static inline void pch_eth_enable_set(struct pch_dev *chip) { … } static u64 pch_systime_read(struct pch_ts_regs __iomem *regs) { … } static void pch_systime_write(struct pch_ts_regs __iomem *regs, u64 ns) { … } static inline void pch_block_reset(struct pch_dev *chip) { … } void pch_ch_control_write(struct pci_dev *pdev, u32 val) { … } EXPORT_SYMBOL(…); u32 pch_ch_event_read(struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); void pch_ch_event_write(struct pci_dev *pdev, u32 val) { … } EXPORT_SYMBOL(…); u32 pch_src_uuid_lo_read(struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); u32 pch_src_uuid_hi_read(struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); u64 pch_rx_snap_read(struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); u64 pch_tx_snap_read(struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); /* This function enables all 64 bits in system time registers [high & low]. This is a work-around for non continuous value in the SystemTime Register*/ static void pch_set_system_time_count(struct pch_dev *chip) { … } static void pch_reset(struct pch_dev *chip) { … } /** * pch_set_station_address() - This API sets the station address used by * IEEE 1588 hardware when looking at PTP * traffic on the ethernet interface * @addr: dress which contain the column separated address to be used. * @pdev: PCI device. */ int pch_set_station_address(u8 *addr, struct pci_dev *pdev) { … } EXPORT_SYMBOL(…); /* * Interrupt service routine */ static irqreturn_t isr(int irq, void *priv) { … } /* * PTP clock operations */ static int ptp_pch_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) { … } static int ptp_pch_adjtime(struct ptp_clock_info *ptp, s64 delta) { … } static int ptp_pch_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) { … } static int ptp_pch_settime(struct ptp_clock_info *ptp, const struct timespec64 *ts) { … } static int ptp_pch_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *rq, int on) { … } static const struct ptp_clock_info ptp_pch_caps = …; static void pch_remove(struct pci_dev *pdev) { … } static s32 pch_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static const struct pci_device_id pch_ieee1588_pcidev_id[] = …; MODULE_DEVICE_TABLE(pci, pch_ieee1588_pcidev_id); static struct pci_driver pch_driver = …; module_pci_driver(…) …; module_param_string(…); MODULE_PARM_DESC(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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