[PATCH 3/3] net: hisilicon: add hix5hd2 mac driver

zhangfei zhangfei.gao at linaro.org
Sun May 25 05:25:27 PDT 2014


Any comments, thanks a lot.

On 05/19/2014 08:57 PM, Zhangfei Gao wrote:
> Add support for the hix5hd2 XGMAC 1Gb ethernet device.
> The controller requires two queues for tx and two queues for rx.
> Controller fetch buffer from free queue and then push to used queue.
> Diver should prepare free queue and free buffer from used queue.
>
> Signed-off-by: Zhangfei Gao <zhangfei.gao at linaro.org>
> ---
>   drivers/net/ethernet/Kconfig             |    1 +
>   drivers/net/ethernet/Makefile            |    1 +
>   drivers/net/ethernet/hisilicon/Kconfig   |   27 +
>   drivers/net/ethernet/hisilicon/Makefile  |    5 +
>   drivers/net/ethernet/hisilicon/hix5hd2.c | 1068 ++++++++++++++++++++++++++++++
>   5 files changed, 1102 insertions(+)
>   create mode 100644 drivers/net/ethernet/hisilicon/Kconfig
>   create mode 100644 drivers/net/ethernet/hisilicon/Makefile
>   create mode 100644 drivers/net/ethernet/hisilicon/hix5hd2.c
>
> diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
> index 39b26fe..0fbdeb1 100644
> --- a/drivers/net/ethernet/Kconfig
> +++ b/drivers/net/ethernet/Kconfig
> @@ -55,6 +55,7 @@ source "drivers/net/ethernet/neterion/Kconfig"
>   source "drivers/net/ethernet/faraday/Kconfig"
>   source "drivers/net/ethernet/freescale/Kconfig"
>   source "drivers/net/ethernet/fujitsu/Kconfig"
> +source "drivers/net/ethernet/hisilicon/Kconfig"
>   source "drivers/net/ethernet/hp/Kconfig"
>   source "drivers/net/ethernet/ibm/Kconfig"
>   source "drivers/net/ethernet/intel/Kconfig"
> diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
> index 545d0b3..dc78996 100644
> --- a/drivers/net/ethernet/Makefile
> +++ b/drivers/net/ethernet/Makefile
> @@ -30,6 +30,7 @@ obj-$(CONFIG_NET_VENDOR_EXAR) += neterion/
>   obj-$(CONFIG_NET_VENDOR_FARADAY) += faraday/
>   obj-$(CONFIG_NET_VENDOR_FREESCALE) += freescale/
>   obj-$(CONFIG_NET_VENDOR_FUJITSU) += fujitsu/
> +obj-$(CONFIG_NET_VENDOR_HISILICON) += hisilicon/
>   obj-$(CONFIG_NET_VENDOR_HP) += hp/
>   obj-$(CONFIG_NET_VENDOR_IBM) += ibm/
>   obj-$(CONFIG_NET_VENDOR_INTEL) += intel/
> diff --git a/drivers/net/ethernet/hisilicon/Kconfig b/drivers/net/ethernet/hisilicon/Kconfig
> new file mode 100644
> index 0000000..da144fc
> --- /dev/null
> +++ b/drivers/net/ethernet/hisilicon/Kconfig
> @@ -0,0 +1,27 @@
> +#
> +# HISILICON device configuration
> +#
> +
> +config NET_VENDOR_HISILICON
> +	bool "Hisilicon devices"
> +	default y
> +	depends on ARM
> +	---help---
> +	  If you have a network (Ethernet) card belonging to this class, say Y
> +	  and read the Ethernet-HOWTO, available from
> +	  <http://www.tldp.org/docs.html#howto>.
> +
> +	  Note that the answer to this question doesn't directly affect the
> +	  kernel: saying N will just cause the configurator to skip all
> +	  the questions about Hisilicon devices. If you say Y, you will be asked
> +	  for your specific card in the following questions.
> +
> +if NET_VENDOR_HISILICON
> +
> +config HIX5HD2_GMAC
> +	tristate "Hisilicon X5HD2 Family Network Device Support"
> +	select PHYLIB
> +	help
> +	  This selects the hix5hd2 mac family network device.
> +
> +endif # NET_VENDOR_HISILICON
> diff --git a/drivers/net/ethernet/hisilicon/Makefile b/drivers/net/ethernet/hisilicon/Makefile
> new file mode 100644
> index 0000000..9f6e71a
> --- /dev/null
> +++ b/drivers/net/ethernet/hisilicon/Makefile
> @@ -0,0 +1,5 @@
> +#
> +# Makefile for the HISILICON network device drivers.
> +#
> +
> +obj-$(CONFIG_HIX5HD2_GMAC) += hix5hd2.o
> diff --git a/drivers/net/ethernet/hisilicon/hix5hd2.c b/drivers/net/ethernet/hisilicon/hix5hd2.c
> new file mode 100644
> index 0000000..f37e893
> --- /dev/null
> +++ b/drivers/net/ethernet/hisilicon/hix5hd2.c
> @@ -0,0 +1,1068 @@
> +/* Copyright (c) 2014 Linaro Ltd.
> + * Copyright (c) 2014 Hisilicon Limited.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/interrupt.h>
> +#include <linux/etherdevice.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_net.h>
> +#include <linux/of_mdio.h>
> +#include <linux/clk.h>
> +#include <linux/circ_buf.h>
> +
> +#define STATION_ADDR_LOW		0x0000
> +#define STATION_ADDR_HIGH		0x0004
> +#define MAC_DUPLEX_HALF_CTRL		0x0008
> +#define MAX_FRM_SIZE			0x003c
> +#define PORT_MODE			0x0040
> +#define PORT_EN				0x0044
> +#define BITS_TX_EN			BIT(2)
> +#define BITS_RX_EN			BIT(1)
> +#define REC_FILT_CONTROL		0x0064
> +#define BIT_CRC_ERR_PASS		BIT(5)
> +#define BIT_PAUSE_FRM_PASS		BIT(4)
> +#define BIT_VLAN_DROP_EN		BIT(3)
> +#define BIT_BC_DROP_EN			BIT(2)
> +#define BIT_MC_MATCH_EN			BIT(1)
> +#define BIT_UC_MATCH_EN			BIT(0)
> +#define PORT_MC_ADDR_LOW		0x0068
> +#define PORT_MC_ADDR_HIGH		0x006C
> +#define CF_CRC_STRIP			0x01b0
> +#define MODE_CHANGE_EN			0x01b4
> +#define BIT_MODE_CHANGE_EN		BIT(0)
> +#define COL_SLOT_TIME			0x01c0
> +#define RECV_CONTROL			0x01e0
> +#define BIT_STRIP_PAD_EN		BIT(3)
> +#define BIT_RUNT_PKT_EN			BIT(4)
> +#define CONTROL_WORD			0x0214
> +#define MDIO_SINGLE_CMD			0x03c0
> +#define MDIO_SINGLE_DATA		0x03c4
> +#define MDIO_CTRL			0x03cc
> +#define MDIO_RDATA_STATUS		0x03d0
> +
> +#define MDIO_START			BIT(20)
> +#define MDIO_R_VALID			BIT(0)
> +#define MDIO_READ			(BIT(17) | MDIO_START)
> +#define MDIO_WRITE			(BIT(16) | MDIO_START)
> +
> +#define RX_FQ_START_ADDR		0x0500
> +#define RX_FQ_DEPTH			0x0504
> +#define RX_FQ_WR_ADDR			0x0508
> +#define RX_FQ_RD_ADDR			0x050c
> +#define RX_FQ_VLDDESC_CNT		0x0510
> +#define RX_FQ_ALEMPTY_TH		0x0514
> +#define RX_FQ_REG_EN			0x0518
> +#define BITS_RX_FQ_START_ADDR_EN	BIT(2)
> +#define BITS_RX_FQ_DEPTH_EN		BIT(1)
> +#define BITS_RX_FQ_RD_ADDR_EN		BIT(0)
> +#define RX_FQ_ALFULL_TH			0x051c
> +#define RX_BQ_START_ADDR		0x0520
> +#define RX_BQ_DEPTH			0x0524
> +#define RX_BQ_WR_ADDR			0x0528
> +#define RX_BQ_RD_ADDR			0x052c
> +#define RX_BQ_FREE_DESC_CNT		0x0530
> +#define RX_BQ_ALEMPTY_TH		0x0534
> +#define RX_BQ_REG_EN			0x0538
> +#define BITS_RX_BQ_START_ADDR_EN	BIT(2)
> +#define BITS_RX_BQ_DEPTH_EN		BIT(1)
> +#define BITS_RX_BQ_WR_ADDR_EN		BIT(0)
> +#define RX_BQ_ALFULL_TH			0x053c
> +#define TX_BQ_START_ADDR		0x0580
> +#define TX_BQ_DEPTH			0x0584
> +#define TX_BQ_WR_ADDR			0x0588
> +#define TX_BQ_RD_ADDR			0x058c
> +#define TX_BQ_VLDDESC_CNT		0x0590
> +#define TX_BQ_ALEMPTY_TH		0x0594
> +#define TX_BQ_REG_EN			0x0598
> +#define BITS_TX_BQ_START_ADDR_EN	BIT(2)
> +#define BITS_TX_BQ_DEPTH_EN		BIT(1)
> +#define BITS_TX_BQ_RD_ADDR_EN		BIT(0)
> +#define TX_BQ_ALFULL_TH			0x059c
> +#define TX_RQ_START_ADDR		0x05a0
> +#define TX_RQ_DEPTH			0x05a4
> +#define TX_RQ_WR_ADDR			0x05a8
> +#define TX_RQ_RD_ADDR			0x05ac
> +#define TX_RQ_FREE_DESC_CNT		0x05b0
> +#define TX_RQ_ALEMPTY_TH		0x05b4
> +#define TX_RQ_REG_EN			0x05b8
> +#define BITS_TX_RQ_START_ADDR_EN	BIT(2)
> +#define BITS_TX_RQ_DEPTH_EN		BIT(1)
> +#define BITS_TX_RQ_WR_ADDR_EN		BIT(0)
> +#define TX_RQ_ALFULL_TH			0x05bc
> +#define RAW_PMU_INT			0x05c0
> +#define ENA_PMU_INT			0x05c4
> +#define STATUS_PMU_INT			0x05c8
> +#define MAC_FIFO_ERR_IN			BIT(30)
> +#define TX_RQ_IN_TIMEOUT_INT		BIT(29)
> +#define RX_BQ_IN_TIMEOUT_INT		BIT(28)
> +#define TXOUTCFF_FULL_INT		BIT(27)
> +#define TXOUTCFF_EMPTY_INT		BIT(26)
> +#define TXCFF_FULL_INT			BIT(25)
> +#define TXCFF_EMPTY_INT			BIT(24)
> +#define RXOUTCFF_FULL_INT		BIT(23)
> +#define RXOUTCFF_EMPTY_INT		BIT(22)
> +#define RXCFF_FULL_INT			BIT(21)
> +#define RXCFF_EMPTY_INT			BIT(20)
> +#define TX_RQ_IN_INT			BIT(19)
> +#define TX_BQ_OUT_INT			BIT(18)
> +#define RX_BQ_IN_INT			BIT(17)
> +#define RX_FQ_OUT_INT			BIT(16)
> +#define TX_RQ_EMPTY_INT			BIT(15)
> +#define TX_RQ_FULL_INT			BIT(14)
> +#define TX_RQ_ALEMPTY_INT		BIT(13)
> +#define TX_RQ_ALFULL_INT		BIT(12)
> +#define TX_BQ_EMPTY_INT			BIT(11)
> +#define TX_BQ_FULL_INT			BIT(10)
> +#define TX_BQ_ALEMPTY_INT		BIT(9)
> +#define TX_BQ_ALFULL_INT		BIT(8)
> +#define RX_BQ_EMPTY_INT			BIT(7)
> +#define RX_BQ_FULL_INT			BIT(6)
> +#define RX_BQ_ALEMPTY_INT		BIT(5)
> +#define RX_BQ_ALFULL_INT		BIT(4)
> +#define RX_FQ_EMPTY_INT			BIT(3)
> +#define RX_FQ_FULL_INT			BIT(2)
> +#define RX_FQ_ALEMPTY_INT		BIT(1)
> +#define RX_FQ_ALFULL_INT		BIT(0)
> +
> +#define DEF_INT_MASK			(RX_BQ_IN_INT | RX_BQ_IN_TIMEOUT_INT | \
> +					TX_RQ_IN_INT | TX_RQ_IN_TIMEOUT_INT)
> +
> +#define DESC_WR_RD_ENA			0x05cc
> +#define IN_QUEUE_TH			0x05d8
> +#define OUT_QUEUE_TH			0x05dc
> +#define QUEUE_TX_BQ_SHIFT		16
> +#define QUEUE_RX_FQ_SHIFT		0
> +#define RX_BQ_IN_TIMEOUT_TH		0x05e0
> +#define TX_RQ_IN_TIMEOUT_TH		0x05e4
> +#define STOP_CMD			0x05e8
> +#define BITS_TX_STOP			BIT(1)
> +#define BITS_RX_STOP			BIT(0)
> +#define FLUSH_CMD			0x05eC
> +#define BITS_TX_FLUSH_CMD		BIT(5)
> +#define BITS_RX_FLUSH_CMD		BIT(4)
> +#define BITS_TX_FLUSH_FLAG_DOWN		BIT(3)
> +#define BITS_TX_FLUSH_FLAG_UP		BIT(2)
> +#define BITS_RX_FLUSH_FLAG_DOWN		BIT(1)
> +#define BITS_RX_FLUSH_FLAG_UP		BIT(0)
> +#define RX_CFF_NUM_REG			0x05f0
> +#define PMU_FSM_REG			0x05f8
> +#define RX_FIFO_PKT_IN_NUM		0x05fc
> +#define RX_FIFO_PKT_OUT_NUM		0x0600
> +
> +#define RGMII_SPEED_1000		0x2c
> +#define RGMII_SPEED_100			0x2f
> +#define RGMII_SPEED_10			0x2d
> +#define MII_SPEED_100			0x0f
> +#define MII_SPEED_10			0x0d
> +#define GMAC_SPEED_1000			0x05
> +#define GMAC_SPEED_100			0x01
> +#define GMAC_SPEED_10			0x00
> +#define GMAC_FULL_DUPLEX		BIT(4)
> +
> +#define RX_BQ_INT_THRESHOLD		0x01
> +#define TX_RQ_INT_THRESHOLD		0x01
> +#define RX_BQ_IN_TIMEOUT		0x10000
> +#define TX_RQ_IN_TIMEOUT		0x50000
> +
> +#define MAC_MAX_FRAME_SIZE		1600
> +#define DESC_SIZE			32
> +#define RX_DESC_NUM			1024
> +#define TX_DESC_NUM			1024
> +
> +#define DESC_VLD_FREE			0
> +#define DESC_VLD_BUSY			1
> +#define DESC_FL_MID			0
> +#define DESC_FL_LAST			1
> +#define DESC_FL_FIRST			2
> +#define DESC_FL_FULL			3
> +
> +/* DMA descriptor ring helpers */
> +#define dma_ring_incr(n, s)		(((n) + 1) & ((s) - 1))
> +#define dma_cnt(n)			((n) >> 5)
> +#define dma_byte(n)			((n) << 5)
> +
> +struct hix5hd2_desc {
> +	__le32 buff_addr;
> +	__le32 buff_len:11;
> +	__le32 reserve2:5;
> +	__le32 data_len:11;
> +	__le32 reserve1:2;
> +	__le32 fl:2;
> +	__le32 descvid:1;
> +} __aligned(32);
> +
> +struct hix5hd2_desc_sw {
> +	struct hix5hd2_desc *desc;
> +	dma_addr_t	phys_addr;
> +	unsigned int	count;
> +	unsigned int	size;
> +};
> +
> +#define QUEUE_NUMS	4
> +struct hix5hd2_priv {
> +	struct hix5hd2_desc_sw pool[QUEUE_NUMS];
> +#define rx_fq		pool[0]
> +#define rx_bq		pool[1]
> +#define tx_bq		pool[2]
> +#define tx_rq		pool[3]
> +
> +	void __iomem *base;
> +	void __iomem *ctrl_base;
> +
> +	struct sk_buff *tx_skb[TX_DESC_NUM];
> +	struct sk_buff *rx_skb[RX_DESC_NUM];
> +
> +	struct device *dev;
> +	struct net_device *netdev;
> +
> +	struct phy_device *phy;
> +	struct device_node *phy_node;
> +	phy_interface_t	phy_mode;
> +
> +	unsigned int speed;
> +	unsigned int duplex;
> +
> +	struct clk *clk;
> +	struct mii_bus *bus;
> +	struct napi_struct napi;
> +	struct work_struct tx_timeout_task;
> +};
> +
> +static void hix5hd2_config_port(struct net_device *dev, u32 speed, u32 duplex)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	u32 val;
> +
> +	priv->speed = speed;
> +	priv->duplex = duplex;
> +
> +	switch (priv->phy_mode) {
> +	case PHY_INTERFACE_MODE_RGMII:
> +		if (speed == SPEED_1000)
> +			val = RGMII_SPEED_1000;
> +		else if (speed == SPEED_100)
> +			val = RGMII_SPEED_100;
> +		else
> +			val = RGMII_SPEED_10;
> +		break;
> +	case PHY_INTERFACE_MODE_MII:
> +		if (speed == SPEED_100)
> +			val = MII_SPEED_100;
> +		else
> +			val = MII_SPEED_10;
> +		break;
> +	default:
> +		netdev_warn(dev, "not supported mode\n");
> +		val = MII_SPEED_10;
> +		break;
> +	}
> +
> +	if (duplex)
> +		val |= GMAC_FULL_DUPLEX;
> +	writel_relaxed(val, priv->ctrl_base);
> +
> +	writel_relaxed(BIT_MODE_CHANGE_EN, priv->base + MODE_CHANGE_EN);
> +	if (speed == SPEED_1000)
> +		val = GMAC_SPEED_1000;
> +	else if (speed == SPEED_100)
> +		val = GMAC_SPEED_100;
> +	else
> +		val = GMAC_SPEED_10;
> +	writel_relaxed(val, priv->base + PORT_MODE);
> +	writel_relaxed(0, priv->base + MODE_CHANGE_EN);
> +	writel_relaxed(duplex, priv->base + MAC_DUPLEX_HALF_CTRL);
> +}
> +
> +static void hix5hd2_set_desc_depth(struct hix5hd2_priv *priv, int rx, int tx)
> +{
> +	writel_relaxed(BITS_RX_FQ_DEPTH_EN, priv->base + RX_FQ_REG_EN);
> +	writel_relaxed(rx << 3, priv->base + RX_FQ_DEPTH);
> +	writel_relaxed(0, priv->base + RX_FQ_REG_EN);
> +
> +	writel_relaxed(BITS_RX_BQ_DEPTH_EN, priv->base + RX_BQ_REG_EN);
> +	writel_relaxed(rx << 3, priv->base + RX_BQ_DEPTH);
> +	writel_relaxed(0, priv->base + RX_BQ_REG_EN);
> +
> +	writel_relaxed(BITS_TX_BQ_DEPTH_EN, priv->base + TX_BQ_REG_EN);
> +	writel_relaxed(tx << 3, priv->base + TX_BQ_DEPTH);
> +	writel_relaxed(0, priv->base + TX_BQ_REG_EN);
> +
> +	writel_relaxed(BITS_TX_RQ_DEPTH_EN, priv->base + TX_RQ_REG_EN);
> +	writel_relaxed(tx << 3, priv->base + TX_RQ_DEPTH);
> +	writel_relaxed(0, priv->base + TX_RQ_REG_EN);
> +}
> +
> +static void hix5hd2_set_rx_fq(struct hix5hd2_priv *priv, dma_addr_t phy_addr)
> +{
> +	writel_relaxed(BITS_RX_FQ_START_ADDR_EN, priv->base + RX_FQ_REG_EN);
> +	writel_relaxed(phy_addr, priv->base + RX_FQ_START_ADDR);
> +	writel_relaxed(0, priv->base + RX_FQ_REG_EN);
> +}
> +
> +static void hix5hd2_set_rx_bq(struct hix5hd2_priv *priv, dma_addr_t phy_addr)
> +{
> +	writel_relaxed(BITS_RX_BQ_START_ADDR_EN, priv->base + RX_BQ_REG_EN);
> +	writel_relaxed(phy_addr, priv->base + RX_BQ_START_ADDR);
> +	writel_relaxed(0, priv->base + RX_BQ_REG_EN);
> +}
> +
> +static void hix5hd2_set_tx_bq(struct hix5hd2_priv *priv, dma_addr_t phy_addr)
> +{
> +	writel_relaxed(BITS_TX_BQ_START_ADDR_EN, priv->base + TX_BQ_REG_EN);
> +	writel_relaxed(phy_addr, priv->base + TX_BQ_START_ADDR);
> +	writel_relaxed(0, priv->base + TX_BQ_REG_EN);
> +}
> +
> +static void hix5hd2_set_tx_rq(struct hix5hd2_priv *priv, dma_addr_t phy_addr)
> +{
> +	writel_relaxed(BITS_TX_RQ_START_ADDR_EN, priv->base + TX_RQ_REG_EN);
> +	writel_relaxed(phy_addr, priv->base + TX_RQ_START_ADDR);
> +	writel_relaxed(0, priv->base + TX_RQ_REG_EN);
> +}
> +
> +static void hix5hd2_set_desc_addr(struct hix5hd2_priv *priv)
> +{
> +	hix5hd2_set_rx_fq(priv, priv->rx_fq.phys_addr);
> +	hix5hd2_set_rx_bq(priv, priv->rx_bq.phys_addr);
> +	hix5hd2_set_tx_rq(priv, priv->tx_rq.phys_addr);
> +	hix5hd2_set_tx_bq(priv, priv->tx_bq.phys_addr);
> +}
> +
> +static void hix5hd2_hw_init(struct hix5hd2_priv *priv)
> +{
> +	u32 val;
> +
> +	/* disable and clear all interrupts */
> +	writel_relaxed(0, priv->base + ENA_PMU_INT);
> +	writel_relaxed(~0, priv->base + RAW_PMU_INT);
> +
> +	writel_relaxed(BIT_CRC_ERR_PASS, priv->base + REC_FILT_CONTROL);
> +	writel_relaxed(MAC_MAX_FRAME_SIZE, priv->base + CONTROL_WORD);
> +	writel_relaxed(0, priv->base + COL_SLOT_TIME);
> +
> +	val = RX_BQ_INT_THRESHOLD << QUEUE_RX_FQ_SHIFT |
> +		TX_RQ_INT_THRESHOLD << QUEUE_TX_BQ_SHIFT;
> +	writel_relaxed(val, priv->base + IN_QUEUE_TH);
> +
> +	writel_relaxed(RX_BQ_IN_TIMEOUT, priv->base + RX_BQ_IN_TIMEOUT_TH);
> +	writel_relaxed(TX_RQ_IN_TIMEOUT, priv->base + TX_RQ_IN_TIMEOUT_TH);
> +
> +	hix5hd2_set_desc_depth(priv, RX_DESC_NUM, TX_DESC_NUM);
> +	hix5hd2_set_desc_addr(priv);
> +}
> +
> +static void hix5hd2_irq_enable(struct hix5hd2_priv *priv)
> +{
> +	writel_relaxed(DEF_INT_MASK, priv->base + ENA_PMU_INT);
> +}
> +
> +static void hix5hd2_irq_disable(struct hix5hd2_priv *priv)
> +{
> +	writel_relaxed(0, priv->base + ENA_PMU_INT);
> +}
> +
> +static void hix5hd2_port_enable(struct hix5hd2_priv *priv)
> +{
> +	writel_relaxed(0xf, priv->base + DESC_WR_RD_ENA);
> +	writel_relaxed(BITS_RX_EN | BITS_TX_EN, priv->base + PORT_EN);
> +}
> +
> +static void hix5hd2_port_disable(struct hix5hd2_priv *priv)
> +{
> +	writel_relaxed(~(BITS_RX_EN | BITS_TX_EN), priv->base + PORT_EN);
> +	writel_relaxed(0, priv->base + DESC_WR_RD_ENA);
> +}
> +
> +static void hix5hd2_hw_set_mac_addr(struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	unsigned char *mac = dev->dev_addr;
> +	u32 val;
> +
> +	val = mac[1] | (mac[0] << 8);
> +	writel_relaxed(val, priv->base + STATION_ADDR_HIGH);
> +
> +	val = mac[5] | (mac[4] << 8) | (mac[3] << 16) | (mac[2] << 24);
> +	writel_relaxed(val, priv->base + STATION_ADDR_LOW);
> +}
> +
> +static int hix5hd2_net_set_mac_address(struct net_device *dev, void *p)
> +{
> +	int ret;
> +
> +	ret = eth_mac_addr(dev, p);
> +	if (!ret)
> +		hix5hd2_hw_set_mac_addr(dev);
> +
> +	return ret;
> +}
> +
> +static void hix5hd2_adjust_link(struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	struct phy_device *phy = priv->phy;
> +
> +	if ((priv->speed != phy->speed) || (priv->duplex != phy->duplex)) {
> +		hix5hd2_config_port(dev, phy->speed, phy->duplex);
> +		phy_print_status(phy);
> +	}
> +}
> +
> +static void hix5hd2_rx_refill(struct hix5hd2_priv *priv)
> +{
> +	struct hix5hd2_desc *desc;
> +	struct sk_buff *skb;
> +	u32 start, end, num, pos, i;
> +
> +	/* software write pointer */
> +	start = dma_cnt(readl_relaxed(priv->base + RX_FQ_WR_ADDR));
> +	/* logic read pointer */
> +	end = dma_cnt(readl_relaxed(priv->base + RX_FQ_RD_ADDR));
> +	num = CIRC_SPACE(start, end, RX_DESC_NUM);
> +
> +	for (i = 0, pos = start; i < num; i++) {
> +		if (priv->rx_skb[pos])
> +			break;
> +		else {
> +			skb = netdev_alloc_skb_ip_align(priv->netdev,
> +				MAC_MAX_FRAME_SIZE);
> +			if (unlikely(skb == NULL))
> +				break;
> +		}
> +
> +		desc = priv->rx_fq.desc + pos;
> +		desc->buff_addr =
> +			dma_map_single(priv->dev, skb->data,
> +					MAC_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
> +		if (dma_mapping_error(priv->dev, desc->buff_addr)) {
> +			dev_kfree_skb_any(skb);
> +			break;
> +		}
> +
> +		priv->rx_skb[pos] = skb;
> +		desc->buff_len = MAC_MAX_FRAME_SIZE - 1;
> +		desc->data_len = 0;
> +		desc->fl = 0;
> +		desc->descvid = DESC_VLD_FREE;
> +		pos = dma_ring_incr(pos, RX_DESC_NUM);
> +	}
> +
> +	if (pos != start)
> +		writel(dma_byte(pos), priv->base + RX_FQ_WR_ADDR);
> +}
> +
> +static int hix5hd2_rx(struct net_device *dev, int limit)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	struct sk_buff *skb;
> +	struct hix5hd2_desc *desc;
> +	dma_addr_t dma_addr;
> +	u32 start, end, num, pos, i, len;
> +
> +	/* software read pointer */
> +	start = dma_cnt(readl_relaxed(priv->base + RX_BQ_RD_ADDR));
> +	/* logic write pointer */
> +	end = dma_cnt(readl_relaxed(priv->base + RX_BQ_WR_ADDR));
> +	num = CIRC_CNT(end, start, RX_DESC_NUM);
> +	if (num > limit)
> +		num = limit;
> +
> +	for (i = 0, pos = start; i < num; i++) {
> +		skb = priv->rx_skb[pos];
> +		if (unlikely(!skb)) {
> +			netdev_err(dev, "inconsistent rx_skb\n");
> +			break;
> +		}
> +		priv->rx_skb[pos] = NULL;
> +
> +		desc = priv->rx_bq.desc + pos;
> +		len = desc->data_len;
> +		dma_addr = desc->buff_addr;
> +		dma_unmap_single(priv->dev, dma_addr, MAC_MAX_FRAME_SIZE,
> +				DMA_FROM_DEVICE);
> +
> +		skb_put(skb, len);
> +		if (skb->len > MAC_MAX_FRAME_SIZE) {
> +			netdev_err(dev, "rcv len err, len = %d\n", skb->len);
> +			dev->stats.rx_errors++;
> +			dev->stats.rx_length_errors++;
> +			dev_kfree_skb_any(skb);
> +			goto next;
> +		}
> +
> +		skb->protocol = eth_type_trans(skb, dev);
> +		napi_gro_receive(&priv->napi, skb);
> +		dev->stats.rx_packets++;
> +		dev->stats.rx_bytes += skb->len;
> +		dev->last_rx = jiffies;
> +next:
> +		pos = dma_ring_incr(pos, RX_DESC_NUM);
> +	}
> +
> +	if (pos != start)
> +		writel(dma_byte(pos), priv->base + RX_BQ_RD_ADDR);
> +
> +	hix5hd2_rx_refill(priv);
> +
> +	return num;
> +}
> +
> +static void hix5hd2_xmit_reclaim(struct net_device *dev)
> +{
> +	struct sk_buff *skb;
> +	struct hix5hd2_desc *desc;
> +	dma_addr_t dma_addr;
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	unsigned int bytes_compl = 0, pkts_compl = 0;
> +	u32 start, end, num, pos, i;
> +
> +	netif_tx_lock(dev);
> +
> +	/* software read */
> +	start = dma_cnt(readl_relaxed(priv->base + TX_RQ_RD_ADDR));
> +	/* logic write */
> +	end = dma_cnt(readl_relaxed(priv->base + TX_RQ_WR_ADDR));
> +	num = CIRC_CNT(end, start, TX_DESC_NUM);
> +
> +	for (i = 0, pos = start; i < num; i++) {
> +		skb = priv->tx_skb[pos];
> +		if (unlikely(!skb)) {
> +			netdev_err(dev, "inconsistent tx_skb\n");
> +			break;
> +		}
> +
> +		pkts_compl++;
> +		bytes_compl += skb->len;
> +		desc = priv->tx_rq.desc + pos;
> +		dma_addr = desc->buff_addr;
> +		dma_unmap_single(priv->dev, dma_addr, skb->len, DMA_TO_DEVICE);
> +		priv->tx_skb[pos] = NULL;
> +		dev_consume_skb_any(skb);
> +		pos = dma_ring_incr(pos, TX_DESC_NUM);
> +	}
> +
> +	if (pos != start)
> +		writel(dma_byte(pos), priv->base + TX_RQ_RD_ADDR);
> +
> +	netif_tx_unlock(dev);
> +
> +	if (pkts_compl || bytes_compl)
> +		netdev_completed_queue(dev, pkts_compl, bytes_compl);
> +
> +	if (unlikely(netif_queue_stopped(priv->netdev)) && pkts_compl)
> +		netif_wake_queue(priv->netdev);
> +}
> +
> +static int hix5hd2_poll(struct napi_struct *napi, int budget)
> +{
> +	struct hix5hd2_priv *priv = container_of(napi,
> +				struct hix5hd2_priv, napi);
> +	struct net_device *dev = priv->netdev;
> +	int work_done = 0, task = budget;
> +	int ints, num;
> +
> +	do {
> +		hix5hd2_xmit_reclaim(dev);
> +		num = hix5hd2_rx(dev, task);
> +		work_done += num;
> +		task -= num;
> +		if ((work_done >= budget) || (num == 0))
> +			break;
> +
> +		ints = readl_relaxed(priv->base + RAW_PMU_INT);
> +		writel_relaxed(ints, priv->base + RAW_PMU_INT);
> +	} while (ints & DEF_INT_MASK);
> +
> +	if (work_done < budget) {
> +		napi_complete(napi);
> +		hix5hd2_irq_enable(priv);
> +	}
> +
> +	return work_done;
> +}
> +
> +static irqreturn_t hix5hd2_interrupt(int irq, void *dev_id)
> +{
> +	struct net_device *dev = (struct net_device *)dev_id;
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	int ints = readl_relaxed(priv->base + RAW_PMU_INT);
> +
> +	writel_relaxed(ints, priv->base + RAW_PMU_INT);
> +	if (likely(ints & DEF_INT_MASK)) {
> +		hix5hd2_irq_disable(priv);
> +		napi_schedule(&priv->napi);
> +	}
> +
> +	return IRQ_HANDLED;
> +}
> +
> +static int hix5hd2_net_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	struct hix5hd2_desc *desc;
> +	u32 pos;
> +
> +	/* software write pointer */
> +	pos = dma_cnt(readl_relaxed(priv->base + TX_BQ_WR_ADDR));
> +	if (unlikely(priv->tx_skb[pos])) {
> +		dev->stats.tx_dropped++;
> +		dev->stats.tx_fifo_errors++;
> +		netif_stop_queue(dev);
> +		return NETDEV_TX_BUSY;
> +	}
> +
> +	desc = priv->tx_bq.desc + pos;
> +	desc->buff_addr =
> +		dma_map_single(priv->dev, skb->data, skb->len, DMA_TO_DEVICE);
> +	if (dma_mapping_error(priv->dev, desc->buff_addr)) {
> +		dev_kfree_skb_any(skb);
> +		return NETDEV_TX_OK;
> +	}
> +
> +	priv->tx_skb[pos] = skb;
> +	desc->buff_len = skb->len;
> +	desc->data_len = skb->len;
> +	desc->fl = DESC_FL_FULL;
> +	desc->descvid = DESC_VLD_BUSY;
> +
> +	pos = dma_ring_incr(pos, TX_DESC_NUM);
> +	writel(dma_byte(pos), priv->base + TX_BQ_WR_ADDR);
> +
> +	dev->trans_start = jiffies;
> +	dev->stats.tx_packets++;
> +	dev->stats.tx_bytes += skb->len;
> +	netdev_sent_queue(dev, skb->len);
> +
> +	return NETDEV_TX_OK;
> +}
> +
> +static void hix5hd2_free_dma_desc_rings(struct hix5hd2_priv *priv)
> +{
> +	struct hix5hd2_desc *desc;
> +	int i;
> +
> +	for (i = 0; i < RX_DESC_NUM; i++) {
> +		struct sk_buff *skb = priv->rx_skb[i];
> +		if (skb == NULL)
> +			continue;
> +
> +		desc = priv->rx_fq.desc + i;
> +		dma_unmap_single(priv->dev, desc->buff_addr,
> +				 MAC_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
> +		dev_kfree_skb_any(skb);
> +		priv->rx_skb[i] = NULL;
> +	}
> +
> +	for (i = 0; i < TX_DESC_NUM; i++) {
> +		struct sk_buff *skb = priv->tx_skb[i];
> +		if (skb == NULL)
> +			continue;
> +
> +		desc = priv->tx_rq.desc + i;
> +		dma_unmap_single(priv->dev, desc->buff_addr,
> +				 skb->len, DMA_TO_DEVICE);
> +		dev_kfree_skb_any(skb);
> +		priv->tx_skb[i] = NULL;
> +	}
> +}
> +
> +static int hix5hd2_net_open(struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +	int ret;
> +
> +	ret = clk_prepare_enable(priv->clk);
> +	if (ret < 0) {
> +		netdev_err(dev, "failed to enable clk %d\n", ret);
> +		return ret;
> +	}
> +
> +	priv->phy = of_phy_connect(dev, priv->phy_node,
> +		&hix5hd2_adjust_link, 0, priv->phy_mode);
> +	if (!priv->phy)
> +		return -ENODEV;
> +
> +	phy_start(priv->phy);
> +	hix5hd2_hw_init(priv);
> +	hix5hd2_rx_refill(priv);
> +
> +	netdev_reset_queue(dev);
> +	netif_start_queue(dev);
> +	napi_enable(&priv->napi);
> +
> +	hix5hd2_port_enable(priv);
> +	hix5hd2_irq_enable(priv);
> +
> +	return 0;
> +}
> +
> +static int hix5hd2_net_close(struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +
> +	hix5hd2_port_disable(priv);
> +	hix5hd2_irq_disable(priv);
> +	napi_disable(&priv->napi);
> +	netif_stop_queue(dev);
> +	hix5hd2_free_dma_desc_rings(priv);
> +
> +	if (priv->phy) {
> +		phy_stop(priv->phy);
> +		phy_disconnect(priv->phy);
> +	}
> +
> +	clk_disable_unprepare(priv->clk);
> +
> +	return 0;
> +}
> +
> +static void hix5hd2_tx_timeout_task(struct work_struct *work)
> +{
> +	struct hix5hd2_priv *priv;
> +
> +	priv = container_of(work, struct hix5hd2_priv, tx_timeout_task);
> +	hix5hd2_net_close(priv->netdev);
> +	hix5hd2_net_open(priv->netdev);
> +}
> +
> +static void hix5hd2_net_timeout(struct net_device *dev)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(dev);
> +
> +	schedule_work(&priv->tx_timeout_task);
> +}
> +
> +static struct net_device_stats *hix5hd2_net_get_stats(struct net_device *dev)
> +{
> +	return &dev->stats;
> +}
> +
> +static const struct net_device_ops hix5hd2_netdev_ops = {
> +	.ndo_open		= hix5hd2_net_open,
> +	.ndo_stop		= hix5hd2_net_close,
> +	.ndo_start_xmit		= hix5hd2_net_xmit,
> +	.ndo_tx_timeout		= hix5hd2_net_timeout,
> +	.ndo_set_mac_address	= hix5hd2_net_set_mac_address,
> +	.ndo_get_stats		= hix5hd2_net_get_stats,
> +};
> +
> +static int hix5hd2_get_settings(struct net_device *net_dev,
> +		struct ethtool_cmd *cmd)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(net_dev);
> +
> +	if (!priv->phy)
> +		return -ENODEV;
> +
> +	return phy_ethtool_gset(priv->phy, cmd);
> +}
> +
> +static int hix5hd2_set_settings(struct net_device *net_dev,
> +		struct ethtool_cmd *cmd)
> +{
> +	struct hix5hd2_priv *priv = netdev_priv(net_dev);
> +
> +	if (!priv->phy)
> +		return -ENODEV;
> +
> +	return phy_ethtool_sset(priv->phy, cmd);
> +}
> +
> +static struct ethtool_ops hix5hd2_ethtools_ops = {
> +	.get_link		= ethtool_op_get_link,
> +	.get_settings		= hix5hd2_get_settings,
> +	.set_settings		= hix5hd2_set_settings,
> +};
> +
> +static int hix5hd2_mdio_wait_ready(struct mii_bus *bus)
> +{
> +	struct hix5hd2_priv *priv = bus->priv;
> +	void __iomem *base = priv->base;
> +	int i, timeout = 10000;
> +
> +	for (i = 0; readl_relaxed(base + MDIO_SINGLE_CMD) & MDIO_START; i++) {
> +		if (i == timeout)
> +			return -ETIMEDOUT;
> +		udelay(1);
> +	}
> +
> +	return 0;
> +}
> +
> +static int hix5hd2_mdio_read(struct mii_bus *bus, int phy, int reg)
> +{
> +	struct hix5hd2_priv *priv = bus->priv;
> +	void __iomem *base = priv->base;
> +	int val, ret;
> +
> +	ret = hix5hd2_mdio_wait_ready(bus);
> +	if (ret < 0)
> +		goto out;
> +
> +	writel_relaxed(MDIO_READ | phy << 8 | reg, base + MDIO_SINGLE_CMD);
> +	ret = hix5hd2_mdio_wait_ready(bus);
> +	if (ret < 0)
> +		goto out;
> +
> +	val = readl_relaxed(base + MDIO_RDATA_STATUS);
> +	if (val & MDIO_R_VALID) {
> +		dev_err(bus->parent, "SMI bus read not valid\n");
> +		ret = -ENODEV;
> +		goto out;
> +	}
> +
> +	val = readl_relaxed(priv->base + MDIO_SINGLE_DATA);
> +	ret = (val >> 16) & 0xFFFF;
> +out:
> +	return ret;
> +}
> +
> +static int hix5hd2_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
> +{
> +	struct hix5hd2_priv *priv = bus->priv;
> +	void __iomem *base = priv->base;
> +	int ret;
> +
> +	ret = hix5hd2_mdio_wait_ready(bus);
> +	if (ret < 0)
> +		goto out;
> +
> +	writel_relaxed(val, base + MDIO_SINGLE_DATA);
> +	writel_relaxed(MDIO_WRITE | phy << 8 | reg, base + MDIO_SINGLE_CMD);
> +	ret = hix5hd2_mdio_wait_ready(bus);
> +out:
> +	return ret;
> +}
> +
> +static void hix5hd2_destroy_hw_desc_queue(struct hix5hd2_priv *priv)
> +{
> +	int i;
> +
> +	for (i = 0; i < QUEUE_NUMS; i++) {
> +		if (priv->pool[i].desc) {
> +			dma_free_coherent(priv->dev, priv->pool[i].size,
> +					priv->pool[i].desc,
> +					priv->pool[i].phys_addr);
> +			priv->pool[i].desc = NULL;
> +		}
> +	}
> +}
> +
> +static int hix5hd2_init_hw_desc_queue(struct hix5hd2_priv *priv)
> +{
> +	struct device *dev = priv->dev;
> +	struct hix5hd2_desc *virt_addr;
> +	dma_addr_t phys_addr;
> +	int size, i;
> +
> +	priv->rx_fq.count = RX_DESC_NUM;
> +	priv->rx_bq.count = RX_DESC_NUM;
> +	priv->tx_bq.count = TX_DESC_NUM;
> +	priv->tx_rq.count = TX_DESC_NUM;
> +
> +	for (i = 0; i < QUEUE_NUMS; i++) {
> +		size = priv->pool[i].count * sizeof(struct hix5hd2_desc);
> +		virt_addr = dma_alloc_coherent(dev, size, &phys_addr,
> +				GFP_KERNEL);
> +		if (virt_addr == NULL)
> +			goto error_free_pool;
> +
> +		memset(virt_addr, 0, size);
> +		priv->pool[i].size = size;
> +		priv->pool[i].desc = virt_addr;
> +		priv->pool[i].phys_addr = phys_addr;
> +	}
> +	return 0;
> +
> +error_free_pool:
> +	hix5hd2_destroy_hw_desc_queue(priv);
> +
> +	return -ENOMEM;
> +}
> +
> +static int hix5hd2_dev_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct device_node *node = dev->of_node;
> +	struct net_device *ndev;
> +	struct hix5hd2_priv *priv;
> +	struct resource *res;
> +	struct mii_bus *bus;
> +	const char *mac_addr;
> +	int ret;
> +
> +	ndev = alloc_etherdev(sizeof(struct hix5hd2_priv));
> +	if (!ndev)
> +		return -ENOMEM;
> +
> +	platform_set_drvdata(pdev, ndev);
> +
> +	priv = netdev_priv(ndev);
> +	priv->dev = dev;
> +	priv->netdev = ndev;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	priv->base = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(priv->base)) {
> +		ret = PTR_ERR(priv->base);
> +		goto out_free_netdev;
> +	}
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> +	priv->ctrl_base = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(priv->ctrl_base)) {
> +		ret = PTR_ERR(priv->ctrl_base);
> +		goto out_free_netdev;
> +	}
> +
> +	priv->clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(priv->clk)) {
> +		netdev_err(ndev, "failed to get clk\n");
> +		ret = -ENODEV;
> +		goto out_free_netdev;
> +	}
> +
> +	ret = clk_prepare_enable(priv->clk);
> +	if (ret < 0) {
> +		netdev_err(ndev, "failed to enable clk %d\n", ret);
> +		goto out_free_netdev;
> +	}
> +
> +	bus = mdiobus_alloc();
> +	if (bus == NULL) {
> +		ret = -ENOMEM;
> +		goto out_free_netdev;
> +	}
> +
> +	bus->priv = priv;
> +	bus->name = "hix5hd2_mii_bus";
> +	bus->read = hix5hd2_mdio_read;
> +	bus->write = hix5hd2_mdio_write;
> +	bus->parent = &pdev->dev;
> +	snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&pdev->dev));
> +	priv->bus = bus;
> +
> +	ret = of_mdiobus_register(bus, node);
> +	if (ret)
> +		goto err_free_mdio;
> +
> +	priv->phy_mode = of_get_phy_mode(node);
> +	if (priv->phy_mode < 0) {
> +		netdev_err(ndev, "not find phy-mode\n");
> +		ret = -EINVAL;
> +		goto err_mdiobus;
> +	}
> +
> +	priv->phy_node = of_parse_phandle(node, "phy-handle", 0);
> +	if (!priv->phy_node) {
> +		netdev_err(ndev, "not find phy-handle\n");
> +		ret = -EINVAL;
> +		goto err_mdiobus;
> +	}
> +
> +	ndev->irq = platform_get_irq(pdev, 0);
> +	if (ndev->irq <= 0) {
> +		netdev_err(ndev, "No irq resource\n");
> +		ret = -EINVAL;
> +		goto out_phy_node;
> +	}
> +
> +	ret = devm_request_irq(dev, ndev->irq, hix5hd2_interrupt,
> +				0, pdev->name, ndev);
> +	if (ret) {
> +		netdev_err(ndev, "devm_request_irq failed\n");
> +		goto out_phy_node;
> +	}
> +
> +	mac_addr = of_get_mac_address(node);
> +	if (mac_addr)
> +		ether_addr_copy(ndev->dev_addr, mac_addr);
> +	if (!is_valid_ether_addr(ndev->dev_addr)) {
> +		eth_hw_addr_random(ndev);
> +		netdev_warn(ndev, "using random MAC address %pM\n",
> +			 ndev->dev_addr);
> +	}
> +
> +	INIT_WORK(&priv->tx_timeout_task, hix5hd2_tx_timeout_task);
> +	ether_setup(ndev);
> +	ndev->watchdog_timeo = 6 * HZ;
> +	ndev->priv_flags |= IFF_UNICAST_FLT;
> +	ndev->netdev_ops = &hix5hd2_netdev_ops;
> +	ndev->ethtool_ops = &hix5hd2_ethtools_ops;
> +	SET_NETDEV_DEV(ndev, dev);
> +
> +	ret = hix5hd2_init_hw_desc_queue(priv);
> +	if (ret)
> +		goto out_phy_node;
> +
> +	netif_napi_add(ndev, &priv->napi, hix5hd2_poll, NAPI_POLL_WEIGHT);
> +	ret = register_netdev(priv->netdev);
> +	if (ret) {
> +		netdev_err(ndev, "register_netdev failed!");
> +		goto out_destroy_queue;
> +	}
> +
> +	clk_disable_unprepare(priv->clk);
> +
> +	return ret;
> +
> +out_destroy_queue:
> +	netif_napi_del(&priv->napi);
> +	hix5hd2_destroy_hw_desc_queue(priv);
> +out_phy_node:
> +	of_node_put(priv->phy_node);
> +err_mdiobus:
> +	mdiobus_unregister(bus);
> +err_free_mdio:
> +	mdiobus_free(bus);
> +out_free_netdev:
> +	free_netdev(ndev);
> +
> +	return ret;
> +}
> +
> +static int hix5hd2_dev_remove(struct platform_device *pdev)
> +{
> +	struct net_device *ndev = platform_get_drvdata(pdev);
> +	struct hix5hd2_priv *priv = netdev_priv(ndev);
> +
> +	netif_napi_del(&priv->napi);
> +	unregister_netdev(ndev);
> +	mdiobus_unregister(priv->bus);
> +	mdiobus_free(priv->bus);
> +
> +	hix5hd2_destroy_hw_desc_queue(priv);
> +	of_node_put(priv->phy_node);
> +	cancel_work_sync(&priv->tx_timeout_task);
> +	free_netdev(ndev);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id hix5hd2_of_match[] = {
> +	{.compatible = "hisilicon,hix5hd2-mac",},
> +	{},
> +};
> +
> +MODULE_DEVICE_TABLE(of, hix5hd2_of_match);
> +
> +static struct platform_driver hix5hd2_dev_driver = {
> +	.driver = {
> +		.name = "hix5hd2-mac",
> +		.of_match_table = hix5hd2_of_match,
> +	},
> +	.probe = hix5hd2_dev_probe,
> +	.remove = hix5hd2_dev_remove,
> +};
> +
> +module_platform_driver(hix5hd2_dev_driver);
> +
> +MODULE_DESCRIPTION("HISILICON X5HD2 Ethernet driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_ALIAS("platform:hix5hd2-ether");
>



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