linux/drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c

// SPDX-License-Identifier: GPL-2.0+
/* Microchip Sparx5 Switch driver
 *
 * Copyright (c) 2021 Microchip Technology Inc. and its subsidiaries.
 *
 * The Sparx5 Chip Register Model can be browsed at this location:
 * https://github.com/microchip-ung/sparx-5_reginfo
 */

#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/ip.h>
#include <linux/dma-mapping.h>

#include "sparx5_main_regs.h"
#include "sparx5_main.h"
#include "sparx5_port.h"

#define FDMA_XTR_CHANNEL …
#define FDMA_INJ_CHANNEL …

#define FDMA_XTR_BUFFER_SIZE …
#define FDMA_WEIGHT …

static int sparx5_fdma_tx_dataptr_cb(struct fdma *fdma, int dcb, int db,
				     u64 *dataptr)
{ … }

static int sparx5_fdma_rx_dataptr_cb(struct fdma *fdma, int dcb, int db,
				     u64 *dataptr)
{ … }

static void sparx5_fdma_rx_activate(struct sparx5 *sparx5, struct sparx5_rx *rx)
{ … }

static void sparx5_fdma_rx_deactivate(struct sparx5 *sparx5, struct sparx5_rx *rx)
{ … }

static void sparx5_fdma_tx_activate(struct sparx5 *sparx5, struct sparx5_tx *tx)
{ … }

static void sparx5_fdma_tx_deactivate(struct sparx5 *sparx5, struct sparx5_tx *tx)
{ … }

static void sparx5_fdma_reload(struct sparx5 *sparx5, struct fdma *fdma)
{ … }

static bool sparx5_fdma_rx_get_frame(struct sparx5 *sparx5, struct sparx5_rx *rx)
{ … }

static int sparx5_fdma_napi_callback(struct napi_struct *napi, int weight)
{ … }

int sparx5_fdma_xmit(struct sparx5 *sparx5, u32 *ifh, struct sk_buff *skb)
{ … }

static int sparx5_fdma_rx_alloc(struct sparx5 *sparx5)
{ … }

static int sparx5_fdma_tx_alloc(struct sparx5 *sparx5)
{ … }

static void sparx5_fdma_rx_init(struct sparx5 *sparx5,
				struct sparx5_rx *rx, int channel)
{ … }

static void sparx5_fdma_tx_init(struct sparx5 *sparx5,
				struct sparx5_tx *tx, int channel)
{ … }

irqreturn_t sparx5_fdma_handler(int irq, void *args)
{ … }

static void sparx5_fdma_injection_mode(struct sparx5 *sparx5)
{ … }

int sparx5_fdma_start(struct sparx5 *sparx5)
{ … }

static u32 sparx5_fdma_port_ctrl(struct sparx5 *sparx5)
{ … }

int sparx5_fdma_stop(struct sparx5 *sparx5)
{ … }