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mvpp2.c

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    • mvpp2.c 254.83 KiB 
    /*
 * Driver for Marvell PPv2 network controller for Armada 375 SoC.
 *
 * Copyright (C) 2014 Marvell
 *
 * Marcin Wojtas <mw@semihalf.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/acpi.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/skbuff.h>
#include <linux/inetdevice.h>
#include <linux/mbus.h>
#include <linux/module.h>
#include <linux/mfd/syscon.h>
#include <linux/interrupt.h>
#include <linux/cpumask.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/phy.h>
#include <linux/phylink.h>
#include <linux/phy/phy.h>
#include <linux/clk.h>
#include <linux/hrtimer.h>
#include <linux/ktime.h>
#include <linux/regmap.h>
#include <uapi/linux/ppp_defs.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/tso.h>

/* Fifo Registers */
#define MVPP2_RX_DATA_FIFO_SIZE_REG(port)	(0x00 + 4 * (port))
#define MVPP2_RX_ATTR_FIFO_SIZE_REG(port)	(0x20 + 4 * (port))
#define MVPP2_RX_MIN_PKT_SIZE_REG		0x60
#define MVPP2_RX_FIFO_INIT_REG			0x64
#define MVPP22_TX_FIFO_THRESH_REG(port)		(0x8840 + 4 * (port))
#define MVPP22_TX_FIFO_SIZE_REG(port)		(0x8860 + 4 * (port))

/* RX DMA Top Registers */
#define MVPP2_RX_CTRL_REG(port)			(0x140 + 4 * (port))
#define     MVPP2_RX_LOW_LATENCY_PKT_SIZE(s)	(((s) & 0xfff) << 16)
#define     MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK	BIT(31)
#define MVPP2_POOL_BUF_SIZE_REG(pool)		(0x180 + 4 * (pool))
#define     MVPP2_POOL_BUF_SIZE_OFFSET		5
#define MVPP2_RXQ_CONFIG_REG(rxq)		(0x800 + 4 * (rxq))
#define     MVPP2_SNOOP_PKT_SIZE_MASK		0x1ff
#define     MVPP2_SNOOP_BUF_HDR_MASK		BIT(9)
#define     MVPP2_RXQ_POOL_SHORT_OFFS		20
#define     MVPP21_RXQ_POOL_SHORT_MASK		0x700000
#define     MVPP22_RXQ_POOL_SHORT_MASK		0xf00000
#define     MVPP2_RXQ_POOL_LONG_OFFS		24
#define     MVPP21_RXQ_POOL_LONG_MASK		0x7000000
#define     MVPP22_RXQ_POOL_LONG_MASK		0xf000000
#define     MVPP2_RXQ_PACKET_OFFSET_OFFS	28
#define     MVPP2_RXQ_PACKET_OFFSET_MASK	0x70000000
#define     MVPP2_RXQ_DISABLE_MASK		BIT(31)

/* Top Registers */