190 lines
3.9 KiB
C
190 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */
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#ifndef _TSNEP_H
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#define _TSNEP_H
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#include "tsnep_hw.h"
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/etherdevice.h>
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#include <linux/phy.h>
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#include <linux/ethtool.h>
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#include <linux/net_tstamp.h>
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#include <linux/ptp_clock_kernel.h>
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#include <linux/miscdevice.h>
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#define TSNEP "tsnep"
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#define TSNEP_RING_SIZE 256
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#define TSNEP_RING_ENTRIES_PER_PAGE (PAGE_SIZE / TSNEP_DESC_SIZE)
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#define TSNEP_RING_PAGE_COUNT (TSNEP_RING_SIZE / TSNEP_RING_ENTRIES_PER_PAGE)
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#define TSNEP_QUEUES 1
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struct tsnep_gcl {
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void __iomem *addr;
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u64 base_time;
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u64 cycle_time;
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u64 cycle_time_extension;
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struct tsnep_gcl_operation operation[TSNEP_GCL_COUNT];
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int count;
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u64 change_limit;
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u64 start_time;
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bool change;
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};
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struct tsnep_tx_entry {
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struct tsnep_tx_desc *desc;
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struct tsnep_tx_desc_wb *desc_wb;
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dma_addr_t desc_dma;
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bool owner_user_flag;
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u32 properties;
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struct sk_buff *skb;
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size_t len;
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DEFINE_DMA_UNMAP_ADDR(dma);
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};
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struct tsnep_tx {
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struct tsnep_adapter *adapter;
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void __iomem *addr;
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void *page[TSNEP_RING_PAGE_COUNT];
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dma_addr_t page_dma[TSNEP_RING_PAGE_COUNT];
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/* TX ring lock */
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spinlock_t lock;
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struct tsnep_tx_entry entry[TSNEP_RING_SIZE];
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int write;
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int read;
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u32 owner_counter;
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int increment_owner_counter;
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u32 packets;
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u32 bytes;
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u32 dropped;
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};
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struct tsnep_rx_entry {
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struct tsnep_rx_desc *desc;
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struct tsnep_rx_desc_wb *desc_wb;
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dma_addr_t desc_dma;
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u32 properties;
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struct sk_buff *skb;
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size_t len;
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DEFINE_DMA_UNMAP_ADDR(dma);
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};
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struct tsnep_rx {
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struct tsnep_adapter *adapter;
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void __iomem *addr;
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void *page[TSNEP_RING_PAGE_COUNT];
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dma_addr_t page_dma[TSNEP_RING_PAGE_COUNT];
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struct tsnep_rx_entry entry[TSNEP_RING_SIZE];
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int read;
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u32 owner_counter;
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int increment_owner_counter;
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u32 packets;
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u32 bytes;
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u32 dropped;
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u32 multicast;
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};
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struct tsnep_queue {
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struct tsnep_adapter *adapter;
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struct tsnep_tx *tx;
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struct tsnep_rx *rx;
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struct napi_struct napi;
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u32 irq_mask;
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};
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struct tsnep_adapter {
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struct net_device *netdev;
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u8 mac_address[ETH_ALEN];
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struct mii_bus *mdiobus;
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bool suppress_preamble;
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phy_interface_t phy_mode;
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struct phy_device *phydev;
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int msg_enable;
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struct platform_device *pdev;
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struct device *dmadev;
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void __iomem *addr;
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int irq;
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bool gate_control;
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/* gate control lock */
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struct mutex gate_control_lock;
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bool gate_control_active;
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struct tsnep_gcl gcl[2];
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int next_gcl;
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struct hwtstamp_config hwtstamp_config;
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struct ptp_clock *ptp_clock;
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struct ptp_clock_info ptp_clock_info;
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/* ptp clock lock */
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spinlock_t ptp_lock;
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int num_tx_queues;
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struct tsnep_tx tx[TSNEP_MAX_QUEUES];
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int num_rx_queues;
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struct tsnep_rx rx[TSNEP_MAX_QUEUES];
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int num_queues;
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struct tsnep_queue queue[TSNEP_MAX_QUEUES];
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};
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extern const struct ethtool_ops tsnep_ethtool_ops;
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int tsnep_ptp_init(struct tsnep_adapter *adapter);
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void tsnep_ptp_cleanup(struct tsnep_adapter *adapter);
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int tsnep_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
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int tsnep_tc_init(struct tsnep_adapter *adapter);
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void tsnep_tc_cleanup(struct tsnep_adapter *adapter);
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int tsnep_tc_setup(struct net_device *netdev, enum tc_setup_type type,
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void *type_data);
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#if IS_ENABLED(CONFIG_TSNEP_SELFTESTS)
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int tsnep_ethtool_get_test_count(void);
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void tsnep_ethtool_get_test_strings(u8 *data);
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void tsnep_ethtool_self_test(struct net_device *netdev,
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struct ethtool_test *eth_test, u64 *data);
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#else
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static inline int tsnep_ethtool_get_test_count(void)
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{
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return -EOPNOTSUPP;
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}
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static inline void tsnep_ethtool_get_test_strings(u8 *data)
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{
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/* not enabled */
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}
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static inline void tsnep_ethtool_self_test(struct net_device *dev,
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struct ethtool_test *eth_test,
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u64 *data)
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{
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/* not enabled */
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}
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#endif /* CONFIG_TSNEP_SELFTESTS */
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void tsnep_get_system_time(struct tsnep_adapter *adapter, u64 *time);
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#endif /* _TSNEP_H */
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