[PATCH] network driver for Hilscher netx (92aa674d) · Commits · 戴 / test

drivers/net/Kconfig

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Original line number	Diff line number	Diff line
		@@ -854,6 +854,17 @@ config SMC9194
		<file:Documentation/networking/net-modules.txt>. The module
		will be called smc9194.

		config NET_NETX
		tristate "NetX Ethernet support"
		select MII
		depends on NET_ETHERNET && ARCH_NETX
		help
		This is support for the Hilscher netX builtin Ethernet ports

		To compile this driver as a module, choose M here and read
		<file:Documentation/networking/net-modules.txt>. The module
		will be called netx-eth.

		config DM9000
		tristate "DM9000 support"
		depends on (ARM \|\| MIPS) && NET_ETHERNET

drivers/net/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -187,6 +187,7 @@ obj-$(CONFIG_MACSONIC) += macsonic.o
		obj-$(CONFIG_MACMACE) += macmace.o
		obj-$(CONFIG_MAC89x0) += mac89x0.o
		obj-$(CONFIG_TUN) += tun.o
		obj-$(CONFIG_NET_NETX) += netx-eth.o
		obj-$(CONFIG_DL2K) += dl2k.o
		obj-$(CONFIG_R8169) += r8169.o
		obj-$(CONFIG_AMD8111_ETH) += amd8111e.o

drivers/net/netx-eth.c

0 → 100644

+516 −0

Original line number	Diff line number	Diff line
		/*
		* drivers/net/netx-eth.c
		*
		* Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2
		* as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#include <linux/config.h>
		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/delay.h>

		#include <linux/netdevice.h>
		#include <linux/platform_device.h>
		#include <linux/etherdevice.h>
		#include <linux/skbuff.h>
		#include <linux/mii.h>

		#include <asm/io.h>
		#include <asm/hardware.h>
		#include <asm/arch/hardware.h>
		#include <asm/arch/netx-regs.h>
		#include <asm/arch/pfifo.h>
		#include <asm/arch/xc.h>
		#include <asm/arch/eth.h>

		/* XC Fifo Offsets */
		#define EMPTY_PTR_FIFO(xcno) (0 + ((xcno) << 3)) /* Index of the empty pointer FIFO */
		#define IND_FIFO_PORT_HI(xcno) (1 + ((xcno) << 3)) /* Index of the FIFO where received */
		/* Data packages are indicated by XC */
		#define IND_FIFO_PORT_LO(xcno) (2 + ((xcno) << 3)) /* Index of the FIFO where received */
		/* Data packages are indicated by XC */
		#define REQ_FIFO_PORT_HI(xcno) (3 + ((xcno) << 3)) /* Index of the FIFO where Data packages */
		/* have to be indicated by ARM which */
		/* shall be sent */
		#define REQ_FIFO_PORT_LO(xcno) (4 + ((xcno) << 3)) /* Index of the FIFO where Data packages */
		/* have to be indicated by ARM which shall */
		/* be sent */
		#define CON_FIFO_PORT_HI(xcno) (5 + ((xcno) << 3)) /* Index of the FIFO where sent Data packages */
		/* are confirmed */
		#define CON_FIFO_PORT_LO(xcno) (6 + ((xcno) << 3)) /* Index of the FIFO where sent Data */
		/* packages are confirmed */
		#define PFIFO_MASK(xcno) (0x7f << (xcno*8))

		#define FIFO_PTR_FRAMELEN_SHIFT 0
		#define FIFO_PTR_FRAMELEN_MASK (0x7ff << 0)
		#define FIFO_PTR_FRAMELEN(len) (((len) << 0) & FIFO_PTR_FRAMELEN_MASK)
		#define FIFO_PTR_TIMETRIG (1<<11)
		#define FIFO_PTR_MULTI_REQ
		#define FIFO_PTR_ORIGIN (1<<14)
		#define FIFO_PTR_VLAN (1<<15)
		#define FIFO_PTR_FRAMENO_SHIFT 16
		#define FIFO_PTR_FRAMENO_MASK (0x3f << 16)
		#define FIFO_PTR_FRAMENO(no) (((no) << 16) & FIFO_PTR_FRAMENO_MASK)
		#define FIFO_PTR_SEGMENT_SHIFT 22
		#define FIFO_PTR_SEGMENT_MASK (0xf << 22)
		#define FIFO_PTR_SEGMENT(seg) (((seg) & 0xf) << 22)
		#define FIFO_PTR_ERROR_SHIFT 28
		#define FIFO_PTR_ERROR_MASK (0xf << 28)

		#define ISR_LINK_STATUS_CHANGE (1<<4)
		#define ISR_IND_LO (1<<3)
		#define ISR_CON_LO (1<<2)
		#define ISR_IND_HI (1<<1)
		#define ISR_CON_HI (1<<0)

		#define ETH_MAC_LOCAL_CONFIG 0x1560
		#define ETH_MAC_4321 0x1564
		#define ETH_MAC_65 0x1568

		#define MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT 16
		#define MAC_TRAFFIC_CLASS_ARRANGEMENT_MASK (0xf<<MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT)
		#define MAC_TRAFFIC_CLASS_ARRANGEMENT(x) (((x)<<MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT) & MAC_TRAFFIC_CLASS_ARRANGEMENT_MASK)
		#define LOCAL_CONFIG_LINK_STATUS_IRQ_EN (1<<24)
		#define LOCAL_CONFIG_CON_LO_IRQ_EN (1<<23)
		#define LOCAL_CONFIG_CON_HI_IRQ_EN (1<<22)
		#define LOCAL_CONFIG_IND_LO_IRQ_EN (1<<21)
		#define LOCAL_CONFIG_IND_HI_IRQ_EN (1<<20)

		#define CARDNAME "netx-eth"

		/* LSB must be zero */
		#define INTERNAL_PHY_ADR 0x1c

		struct netx_eth_priv {
		void __iomem sram_base, xpec_base, *xmac_base;
		int id;
		struct net_device_stats stats;
		struct mii_if_info mii;
		u32 msg_enable;
		struct xc *xc;
		spinlock_t lock;
		};

		static void netx_eth_set_multicast_list(struct net_device *ndev)
		{
		/* implement me */
		}

		static int
		netx_eth_hard_start_xmit(struct sk_buff skb, struct net_device ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);
		unsigned char *buf = skb->data;
		unsigned int len = skb->len;

		spin_lock_irq(&priv->lock);
		memcpy_toio(priv->sram_base + 1560, (void *)buf, len);
		if (len < 60) {
		memset_io(priv->sram_base + 1560 + len, 0, 60 - len);
		len = 60;
		}

		pfifo_push(REQ_FIFO_PORT_LO(priv->id),
		FIFO_PTR_SEGMENT(priv->id) \|
		FIFO_PTR_FRAMENO(1) \|
		FIFO_PTR_FRAMELEN(len));

		ndev->trans_start = jiffies;
		priv->stats.tx_packets++;
		priv->stats.tx_bytes += skb->len;

		netif_stop_queue(ndev);
		spin_unlock_irq(&priv->lock);
		dev_kfree_skb(skb);

		return 0;
		}

		static void netx_eth_receive(struct net_device *ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);
		unsigned int val, frameno, seg, len;
		unsigned char *data;
		struct sk_buff *skb;

		val = pfifo_pop(IND_FIFO_PORT_LO(priv->id));

		frameno = (val & FIFO_PTR_FRAMENO_MASK) >> FIFO_PTR_FRAMENO_SHIFT;
		seg = (val & FIFO_PTR_SEGMENT_MASK) >> FIFO_PTR_SEGMENT_SHIFT;
		len = (val & FIFO_PTR_FRAMELEN_MASK) >> FIFO_PTR_FRAMELEN_SHIFT;

		skb = dev_alloc_skb(len);
		if (unlikely(skb == NULL)) {
		printk(KERN_NOTICE "%s: Low memory, packet dropped.\n",
		ndev->name);
		priv->stats.rx_dropped++;
		return;
		}

		data = skb_put(skb, len);

		memcpy_fromio(data, priv->sram_base + frameno * 1560, len);

		pfifo_push(EMPTY_PTR_FIFO(priv->id),
		FIFO_PTR_SEGMENT(seg) \| FIFO_PTR_FRAMENO(frameno));

		ndev->last_rx = jiffies;
		skb->dev = ndev;
		skb->protocol = eth_type_trans(skb, ndev);
		netif_rx(skb);
		priv->stats.rx_packets++;
		priv->stats.rx_bytes += len;
		}

		static irqreturn_t
		netx_eth_interrupt(int irq, void dev_id, struct pt_regs regs)
		{
		struct net_device *ndev = dev_id;
		struct netx_eth_priv *priv = netdev_priv(ndev);
		int status;
		unsigned long flags;

		spin_lock_irqsave(&priv->lock, flags);

		status = readl(NETX_PFIFO_XPEC_ISR(priv->id));
		while (status) {
		int fill_level;
		writel(status, NETX_PFIFO_XPEC_ISR(priv->id));

		if ((status & ISR_CON_HI) \|\| (status & ISR_IND_HI))
		printk("%s: unexpected status: 0x%08x\n",
		__FUNCTION__, status);

		fill_level =
		readl(NETX_PFIFO_FILL_LEVEL(IND_FIFO_PORT_LO(priv->id)));
		while (fill_level--)
		netx_eth_receive(ndev);

		if (status & ISR_CON_LO)
		netif_wake_queue(ndev);

		if (status & ISR_LINK_STATUS_CHANGE)
		mii_check_media(&priv->mii, netif_msg_link(priv), 1);

		status = readl(NETX_PFIFO_XPEC_ISR(priv->id));
		}
		spin_unlock_irqrestore(&priv->lock, flags);
		return IRQ_HANDLED;
		}

		static struct net_device_stats netx_eth_query_statistics(struct net_device ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);
		return &priv->stats;
		}

		static int netx_eth_open(struct net_device *ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);

		if (request_irq
		(ndev->irq, &netx_eth_interrupt, SA_SHIRQ, ndev->name, ndev))
		return -EAGAIN;

		writel(ndev->dev_addr[0] \|
		ndev->dev_addr[1]<<8 \|
		ndev->dev_addr[2]<<16 \|
		ndev->dev_addr[3]<<24,
		priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_4321);
		writel(ndev->dev_addr[4] \|
		ndev->dev_addr[5]<<8,
		priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_65);

		writel(LOCAL_CONFIG_LINK_STATUS_IRQ_EN \|
		LOCAL_CONFIG_CON_LO_IRQ_EN \|
		LOCAL_CONFIG_CON_HI_IRQ_EN \|
		LOCAL_CONFIG_IND_LO_IRQ_EN \|
		LOCAL_CONFIG_IND_HI_IRQ_EN,
		priv->xpec_base + NETX_XPEC_RAM_START_OFS +
		ETH_MAC_LOCAL_CONFIG);

		mii_check_media(&priv->mii, netif_msg_link(priv), 1);
		netif_start_queue(ndev);

		return 0;
		}

		static int netx_eth_close(struct net_device *ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);

		netif_stop_queue(ndev);

		writel(0,
		priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_LOCAL_CONFIG);

		free_irq(ndev->irq, ndev);

		return 0;
		}

		static void netx_eth_timeout(struct net_device *ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);
		int i;

		printk(KERN_ERR "%s: transmit timed out, resetting\n", ndev->name);

		spin_lock_irq(&priv->lock);

		xc_reset(priv->xc);
		xc_start(priv->xc);

		for (i=2; i<=18; i++)
		pfifo_push(EMPTY_PTR_FIFO(priv->id),
		FIFO_PTR_FRAMENO(i) \| FIFO_PTR_SEGMENT(priv->id));

		spin_unlock_irq(&priv->lock);

		netif_wake_queue(ndev);
		}

		static int
		netx_eth_phy_read(struct net_device *ndev, int phy_id, int reg)
		{
		unsigned int val;

		val = MIIMU_SNRDY \| MIIMU_PREAMBLE \| MIIMU_PHYADDR(phy_id) \|
		MIIMU_REGADDR(reg) \| MIIMU_PHY_NRES;

		writel(val, NETX_MIIMU);
		while (readl(NETX_MIIMU) & MIIMU_SNRDY);

		return readl(NETX_MIIMU) >> 16;

		}

		static void
		netx_eth_phy_write(struct net_device *ndev, int phy_id, int reg, int value)
		{
		unsigned int val;

		val = MIIMU_SNRDY \| MIIMU_PREAMBLE \| MIIMU_PHYADDR(phy_id) \|
		MIIMU_REGADDR(reg) \| MIIMU_PHY_NRES \| MIIMU_OPMODE_WRITE \|
		MIIMU_DATA(value);

		writel(val, NETX_MIIMU);
		while (readl(NETX_MIIMU) & MIIMU_SNRDY);
		}

		static int netx_eth_enable(struct net_device *ndev)
		{
		struct netx_eth_priv *priv = netdev_priv(ndev);
		unsigned int mac4321, mac65;
		int running, i;

		ether_setup(ndev);

		ndev->open = netx_eth_open;
		ndev->stop = netx_eth_close;
		ndev->hard_start_xmit = netx_eth_hard_start_xmit;
		ndev->tx_timeout = netx_eth_timeout;
		ndev->watchdog_timeo = msecs_to_jiffies(5000);
		ndev->get_stats = netx_eth_query_statistics;
		ndev->set_multicast_list = netx_eth_set_multicast_list;

		priv->msg_enable = NETIF_MSG_LINK;
		priv->mii.phy_id_mask = 0x1f;
		priv->mii.reg_num_mask = 0x1f;
		priv->mii.force_media = 0;
		priv->mii.full_duplex = 0;
		priv->mii.dev = ndev;
		priv->mii.mdio_read = netx_eth_phy_read;
		priv->mii.mdio_write = netx_eth_phy_write;
		priv->mii.phy_id = INTERNAL_PHY_ADR + priv->id;

		running = xc_running(priv->xc);
		xc_stop(priv->xc);

		/* if the xc engine is already running, assume the bootloader has
		* loaded the firmware for us
		*/
		if (running) {
		/* get Node Address from hardware */
		mac4321 = readl(priv->xpec_base +
		NETX_XPEC_RAM_START_OFS + ETH_MAC_4321);
		mac65 = readl(priv->xpec_base +
		NETX_XPEC_RAM_START_OFS + ETH_MAC_65);

		ndev->dev_addr[0] = mac4321 & 0xff;
		ndev->dev_addr[1] = (mac4321 >> 8) & 0xff;
		ndev->dev_addr[2] = (mac4321 >> 16) & 0xff;
		ndev->dev_addr[3] = (mac4321 >> 24) & 0xff;
		ndev->dev_addr[4] = mac65 & 0xff;
		ndev->dev_addr[5] = (mac65 >> 8) & 0xff;
		} else {
		if (xc_request_firmware(priv->xc)) {
		printk(CARDNAME ": requesting firmware failed\n");
		return -ENODEV;
		}
		}

		xc_reset(priv->xc);
		xc_start(priv->xc);

		if (!is_valid_ether_addr(ndev->dev_addr))
		printk("%s: Invalid ethernet MAC address. Please "
		"set using ifconfig\n", ndev->name);

		for (i=2; i<=18; i++)
		pfifo_push(EMPTY_PTR_FIFO(priv->id),
		FIFO_PTR_FRAMENO(i) \| FIFO_PTR_SEGMENT(priv->id));

		return register_netdev(ndev);

		}

		static int netx_eth_drv_probe(struct platform_device *pdev)
		{
		struct netx_eth_priv *priv;
		struct net_device *ndev;
		struct netxeth_platform_data *pdata;
		int ret;

		ndev = alloc_etherdev(sizeof (struct netx_eth_priv));
		if (!ndev) {
		printk("%s: could not allocate device.\n", CARDNAME);
		ret = -ENOMEM;
		goto exit;
		}
		SET_MODULE_OWNER(ndev);
		SET_NETDEV_DEV(ndev, &pdev->dev);

		platform_set_drvdata(pdev, ndev);

		priv = netdev_priv(ndev);

		pdata = (struct netxeth_platform_data *)pdev->dev.platform_data;
		priv->xc = request_xc(pdata->xcno, &pdev->dev);
		if (!priv->xc) {
		dev_err(&pdev->dev, "unable to request xc engine\n");
		ret = -ENODEV;
		goto exit_free_netdev;
		}

		ndev->irq = priv->xc->irq;
		priv->id = pdev->id;
		priv->xpec_base = priv->xc->xpec_base;
		priv->xmac_base = priv->xc->xmac_base;
		priv->sram_base = priv->xc->sram_base;

		ret = pfifo_request(PFIFO_MASK(priv->id));
		if (ret) {
		printk("unable to request PFIFO\n");
		goto exit_free_xc;
		}

		ret = netx_eth_enable(ndev);
		if (ret)
		goto exit_free_pfifo;

		return 0;
		exit_free_pfifo:
		pfifo_free(PFIFO_MASK(priv->id));
		exit_free_xc:
		free_xc(priv->xc);
		exit_free_netdev:
		platform_set_drvdata(pdev, NULL);
		free_netdev(ndev);
		exit:
		return ret;
		}

		static int netx_eth_drv_remove(struct platform_device *pdev)
		{
		struct net_device *ndev = dev_get_drvdata(&pdev->dev);
		struct netx_eth_priv *priv = netdev_priv(ndev);

		platform_set_drvdata(pdev, NULL);

		unregister_netdev(ndev);
		xc_stop(priv->xc);
		free_xc(priv->xc);
		free_netdev(ndev);
		pfifo_free(PFIFO_MASK(priv->id));

		return 0;
		}

		static int netx_eth_drv_suspend(struct platform_device *pdev, pm_message_t state)
		{
		dev_err(&pdev->dev, "suspend not implemented\n");
		return 0;
		}

		static int netx_eth_drv_resume(struct platform_device *pdev)
		{
		dev_err(&pdev->dev, "resume not implemented\n");
		return 0;
		}

		static struct platform_driver netx_eth_driver = {
		.probe = netx_eth_drv_probe,
		.remove = netx_eth_drv_remove,
		.suspend = netx_eth_drv_suspend,
		.resume = netx_eth_drv_resume,
		.driver = {
		.name = CARDNAME,
		.owner = THIS_MODULE,
		},
		};

		static int __init netx_eth_init(void)
		{
		unsigned int phy_control, val;

		printk("NetX Ethernet driver\n");

		phy_control = PHY_CONTROL_PHY_ADDRESS(INTERNAL_PHY_ADR>>1) \|
		PHY_CONTROL_PHY1_MODE(PHY_MODE_ALL) \|
		PHY_CONTROL_PHY1_AUTOMDIX \|
		PHY_CONTROL_PHY1_EN \|
		PHY_CONTROL_PHY0_MODE(PHY_MODE_ALL) \|
		PHY_CONTROL_PHY0_AUTOMDIX \|
		PHY_CONTROL_PHY0_EN \|
		PHY_CONTROL_CLK_XLATIN;

		val = readl(NETX_SYSTEM_IOC_ACCESS_KEY);
		writel(val, NETX_SYSTEM_IOC_ACCESS_KEY);

		writel(phy_control \| PHY_CONTROL_RESET, NETX_SYSTEM_PHY_CONTROL);
		udelay(100);

		val = readl(NETX_SYSTEM_IOC_ACCESS_KEY);
		writel(val, NETX_SYSTEM_IOC_ACCESS_KEY);

		writel(phy_control, NETX_SYSTEM_PHY_CONTROL);

		return platform_driver_register(&netx_eth_driver);
		}

		static void __exit netx_eth_cleanup(void)
		{
		platform_driver_unregister(&netx_eth_driver);
		}

		module_init(netx_eth_init);
		module_exit(netx_eth_cleanup);

		MODULE_AUTHOR("Sascha Hauer, Pengutronix");
		MODULE_LICENSE("GPL");

include/asm-arm/arch-netx/eth.h

0 → 100644

+27 −0

Original line number	Diff line number	Diff line
		/*
		* include/asm-arm/arch-netx/eth.h
		*
		* Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2
		* as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#ifndef ASMARM_ARCH_ETH_H
		#define ASMARM_ARCH_ETH_H

		struct netxeth_platform_data {
		unsigned int xcno; /* number of xmac/xpec engine this eth uses */
		};

		#endif

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