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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2021 Gerhard Engleder <gerhard@engleder-embedded.com> */
#ifndef _TSNEP_H
#define _TSNEP_H
#include "tsnep_hw.h"
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/phy.h>
#include <linux/ethtool.h>
#include <linux/net_tstamp.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/miscdevice.h>
#define TSNEP "tsnep"
#define TSNEP_RING_SIZE 256
#define TSNEP_RING_ENTRIES_PER_PAGE (PAGE_SIZE / TSNEP_DESC_SIZE)
#define TSNEP_RING_PAGE_COUNT (TSNEP_RING_SIZE / TSNEP_RING_ENTRIES_PER_PAGE)
#define TSNEP_QUEUES 1
struct tsnep_gcl {
void __iomem *addr;
u64 base_time;
u64 cycle_time;
u64 cycle_time_extension;
struct tsnep_gcl_operation operation[TSNEP_GCL_COUNT];
int count;
u64 change_limit;
u64 start_time;
bool change;
};
struct tsnep_tx_entry {
struct tsnep_tx_desc *desc;
struct tsnep_tx_desc_wb *desc_wb;
dma_addr_t desc_dma;
bool owner_user_flag;
u32 properties;
struct sk_buff *skb;
size_t len;
DEFINE_DMA_UNMAP_ADDR(dma);
};
struct tsnep_tx {
struct tsnep_adapter *adapter;
void __iomem *addr;
int queue_index;
void *page[TSNEP_RING_PAGE_COUNT];
dma_addr_t page_dma[TSNEP_RING_PAGE_COUNT];
/* TX ring lock */
spinlock_t lock;
struct tsnep_tx_entry entry[TSNEP_RING_SIZE];
int write;
int read;
u32 owner_counter;
int increment_owner_counter;
u32 packets;
u32 bytes;
u32 dropped;
};
struct tsnep_rx_entry {
struct tsnep_rx_desc *desc;
struct tsnep_rx_desc_wb *desc_wb;
dma_addr_t desc_dma;
u32 properties;
struct sk_buff *skb;
size_t len;
DEFINE_DMA_UNMAP_ADDR(dma);
};
struct tsnep_rx {
struct tsnep_adapter *adapter;
void __iomem *addr;
int queue_index;
void *page[TSNEP_RING_PAGE_COUNT];
dma_addr_t page_dma[TSNEP_RING_PAGE_COUNT];
struct tsnep_rx_entry entry[TSNEP_RING_SIZE];
int read;
u32 owner_counter;
int increment_owner_counter;
u32 packets;
u32 bytes;
u32 dropped;
u32 multicast;
};
struct tsnep_queue {
struct tsnep_adapter *adapter;
char name[IFNAMSIZ + 9];
struct tsnep_tx *tx;
struct tsnep_rx *rx;
struct napi_struct napi;
int irq;
u32 irq_mask;
};
struct tsnep_adapter {
struct net_device *netdev;
u8 mac_address[ETH_ALEN];
struct mii_bus *mdiobus;
bool suppress_preamble;
phy_interface_t phy_mode;
struct phy_device *phydev;
int msg_enable;
struct platform_device *pdev;
struct device *dmadev;
void __iomem *addr;
bool gate_control;
/* gate control lock */
struct mutex gate_control_lock;
bool gate_control_active;
struct tsnep_gcl gcl[2];
int next_gcl;
struct hwtstamp_config hwtstamp_config;
struct ptp_clock *ptp_clock;
struct ptp_clock_info ptp_clock_info;
/* ptp clock lock */
spinlock_t ptp_lock;
int num_tx_queues;
struct tsnep_tx tx[TSNEP_MAX_QUEUES];
int num_rx_queues;
struct tsnep_rx rx[TSNEP_MAX_QUEUES];
int num_queues;
struct tsnep_queue queue[TSNEP_MAX_QUEUES];
};
extern const struct ethtool_ops tsnep_ethtool_ops;
int tsnep_ptp_init(struct tsnep_adapter *adapter);
void tsnep_ptp_cleanup(struct tsnep_adapter *adapter);
int tsnep_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
int tsnep_tc_init(struct tsnep_adapter *adapter);
void tsnep_tc_cleanup(struct tsnep_adapter *adapter);
int tsnep_tc_setup(struct net_device *netdev, enum tc_setup_type type,
void *type_data);
#if IS_ENABLED(CONFIG_TSNEP_SELFTESTS)
int tsnep_ethtool_get_test_count(void);
void tsnep_ethtool_get_test_strings(u8 *data);
void tsnep_ethtool_self_test(struct net_device *netdev,
struct ethtool_test *eth_test, u64 *data);
#else
static inline int tsnep_ethtool_get_test_count(void)
{
return -EOPNOTSUPP;
}
static inline void tsnep_ethtool_get_test_strings(u8 *data)
{
/* not enabled */
}
static inline void tsnep_ethtool_self_test(struct net_device *dev,
struct ethtool_test *eth_test,
u64 *data)
{
/* not enabled */
}
#endif /* CONFIG_TSNEP_SELFTESTS */
void tsnep_get_system_time(struct tsnep_adapter *adapter, u64 *time);
#endif /* _TSNEP_H */
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