| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Thompson | 591 | 100.00% | 2 | 100.00% |
| Total | 591 | 2 |
/* SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause */ /* Header file for Gigabit Ethernet driver for Mellanox BlueField SoC * - this file contains software data structures and any chip-specific * data structures (e.g. TX WQE format) that are memory resident. * * Copyright (C) 2020-2021 NVIDIA CORPORATION & AFFILIATES */ #ifndef __MLXBF_GIGE_H__ #define __MLXBF_GIGE_H__ #include <linux/io-64-nonatomic-lo-hi.h> #include <linux/irqreturn.h> #include <linux/netdevice.h> #include <linux/irq.h> /* The silicon design supports a maximum RX ring size of * 32K entries. Based on current testing this maximum size * is not required to be supported. Instead the RX ring * will be capped at a realistic value of 1024 entries. */ #define MLXBF_GIGE_MIN_RXQ_SZ 32 #define MLXBF_GIGE_MAX_RXQ_SZ 1024 #define MLXBF_GIGE_DEFAULT_RXQ_SZ 128 #define MLXBF_GIGE_MIN_TXQ_SZ 4 #define MLXBF_GIGE_MAX_TXQ_SZ 256 #define MLXBF_GIGE_DEFAULT_TXQ_SZ 128 #define MLXBF_GIGE_DEFAULT_BUF_SZ 2048 #define MLXBF_GIGE_DMA_PAGE_SZ 4096 #define MLXBF_GIGE_DMA_PAGE_SHIFT 12 /* There are four individual MAC RX filters. Currently * two of them are being used: one for the broadcast MAC * (index 0) and one for local MAC (index 1) */ #define MLXBF_GIGE_BCAST_MAC_FILTER_IDX 0 #define MLXBF_GIGE_LOCAL_MAC_FILTER_IDX 1 /* Define for broadcast MAC literal */ #define BCAST_MAC_ADDR 0xFFFFFFFFFFFF /* There are three individual interrupts: * 1) Errors, "OOB" interrupt line * 2) Receive Packet, "OOB_LLU" interrupt line * 3) LLU and PLU Events, "OOB_PLU" interrupt line */ #define MLXBF_GIGE_ERROR_INTR_IDX 0 #define MLXBF_GIGE_RECEIVE_PKT_INTR_IDX 1 #define MLXBF_GIGE_LLU_PLU_INTR_IDX 2 struct mlxbf_gige_stats { u64 hw_access_errors; u64 tx_invalid_checksums; u64 tx_small_frames; u64 tx_index_errors; u64 sw_config_errors; u64 sw_access_errors; u64 rx_truncate_errors; u64 rx_mac_errors; u64 rx_din_dropped_pkts; u64 tx_fifo_full; u64 rx_filter_passed_pkts; u64 rx_filter_discard_pkts; }; struct mlxbf_gige { void __iomem *base; void __iomem *llu_base; void __iomem *plu_base; struct device *dev; struct net_device *netdev; struct platform_device *pdev; void __iomem *mdio_io; void __iomem *clk_io; struct mii_bus *mdiobus; spinlock_t lock; /* for packet processing indices */ u16 rx_q_entries; u16 tx_q_entries; u64 *tx_wqe_base; dma_addr_t tx_wqe_base_dma; u64 *tx_wqe_next; u64 *tx_cc; dma_addr_t tx_cc_dma; dma_addr_t *rx_wqe_base; dma_addr_t rx_wqe_base_dma; u64 *rx_cqe_base; dma_addr_t rx_cqe_base_dma; u16 tx_pi; u16 prev_tx_ci; struct sk_buff *rx_skb[MLXBF_GIGE_MAX_RXQ_SZ]; struct sk_buff *tx_skb[MLXBF_GIGE_MAX_TXQ_SZ]; int error_irq; int rx_irq; int llu_plu_irq; int phy_irq; int hw_phy_irq; bool promisc_enabled; u8 valid_polarity; struct napi_struct napi; struct mlxbf_gige_stats stats; }; /* Rx Work Queue Element definitions */ #define MLXBF_GIGE_RX_WQE_SZ 8 /* Rx Completion Queue Element definitions */ #define MLXBF_GIGE_RX_CQE_SZ 8 #define MLXBF_GIGE_RX_CQE_PKT_LEN_MASK GENMASK(10, 0) #define MLXBF_GIGE_RX_CQE_VALID_MASK GENMASK(11, 11) #define MLXBF_GIGE_RX_CQE_PKT_STATUS_MASK GENMASK(15, 12) #define MLXBF_GIGE_RX_CQE_PKT_STATUS_MAC_ERR GENMASK(12, 12) #define MLXBF_GIGE_RX_CQE_PKT_STATUS_TRUNCATED GENMASK(13, 13) #define MLXBF_GIGE_RX_CQE_CHKSUM_MASK GENMASK(31, 16) /* Tx Work Queue Element definitions */ #define MLXBF_GIGE_TX_WQE_SZ_QWORDS 2 #define MLXBF_GIGE_TX_WQE_SZ 16 #define MLXBF_GIGE_TX_WQE_PKT_LEN_MASK GENMASK(10, 0) #define MLXBF_GIGE_TX_WQE_UPDATE_MASK GENMASK(31, 31) #define MLXBF_GIGE_TX_WQE_CHKSUM_LEN_MASK GENMASK(42, 32) #define MLXBF_GIGE_TX_WQE_CHKSUM_START_MASK GENMASK(55, 48) #define MLXBF_GIGE_TX_WQE_CHKSUM_OFFSET_MASK GENMASK(63, 56) /* Macro to return packet length of specified TX WQE */ #define MLXBF_GIGE_TX_WQE_PKT_LEN(tx_wqe_addr) \ (*((tx_wqe_addr) + 1) & MLXBF_GIGE_TX_WQE_PKT_LEN_MASK) /* Tx Completion Count */ #define MLXBF_GIGE_TX_CC_SZ 8 /* List of resources in ACPI table */ enum mlxbf_gige_res { MLXBF_GIGE_RES_MAC, MLXBF_GIGE_RES_MDIO9, MLXBF_GIGE_RES_GPIO0, MLXBF_GIGE_RES_LLU, MLXBF_GIGE_RES_PLU, MLXBF_GIGE_RES_CLK }; /* Version of register data returned by mlxbf_gige_get_regs() */ #define MLXBF_GIGE_REGS_VERSION 1 int mlxbf_gige_mdio_probe(struct platform_device *pdev, struct mlxbf_gige *priv); void mlxbf_gige_mdio_remove(struct mlxbf_gige *priv); irqreturn_t mlxbf_gige_mdio_handle_phy_interrupt(int irq, void *dev_id); void mlxbf_gige_mdio_enable_phy_int(struct mlxbf_gige *priv); void mlxbf_gige_set_mac_rx_filter(struct mlxbf_gige *priv, unsigned int index, u64 dmac); void mlxbf_gige_get_mac_rx_filter(struct mlxbf_gige *priv, unsigned int index, u64 *dmac); void mlxbf_gige_enable_promisc(struct mlxbf_gige *priv); void mlxbf_gige_disable_promisc(struct mlxbf_gige *priv); int mlxbf_gige_rx_init(struct mlxbf_gige *priv); void mlxbf_gige_rx_deinit(struct mlxbf_gige *priv); int mlxbf_gige_tx_init(struct mlxbf_gige *priv); void mlxbf_gige_tx_deinit(struct mlxbf_gige *priv); bool mlxbf_gige_handle_tx_complete(struct mlxbf_gige *priv); netdev_tx_t mlxbf_gige_start_xmit(struct sk_buff *skb, struct net_device *netdev); struct sk_buff *mlxbf_gige_alloc_skb(struct mlxbf_gige *priv, unsigned int map_len, dma_addr_t *buf_dma, enum dma_data_direction dir); int mlxbf_gige_request_irqs(struct mlxbf_gige *priv); void mlxbf_gige_free_irqs(struct mlxbf_gige *priv); int mlxbf_gige_poll(struct napi_struct *napi, int budget); extern const struct ethtool_ops mlxbf_gige_ethtool_ops; void mlxbf_gige_update_tx_wqe_next(struct mlxbf_gige *priv); #endif /* !defined(__MLXBF_GIGE_H__) */
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