net: remove netx ethernet driver

The ARM netx platform got removed in 5.3, so this driver
is now useless.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

1 files changed, 0 insertions, 497 deletions

diff --git a/drivers/net/ethernet/netx-eth.c b/drivers/net/ethernet/netx-eth.c
deleted file mode 100644
index cf6e7eb1b1e1..000000000000
--- a/drivers/net/ethernet/netx-eth.c
+++ /dev/null
@@ -1,497 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * drivers/net/ethernet/netx-eth.c
- *
- * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.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 <mach/hardware.h>
-#include <mach/netx-regs.h>
-#include <mach/pfifo.h>
-#include <mach/xc.h>
-#include <linux/platform_data/eth-netx.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 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->stats.tx_packets++;
-	ndev->stats.tx_bytes += skb->len;
-
-	netif_stop_queue(ndev);
-	spin_unlock_irq(&priv->lock);
-	dev_kfree_skb(skb);
-
-	return NETDEV_TX_OK;
-}
-
-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 = netdev_alloc_skb(ndev, len);
-	if (unlikely(skb == NULL)) {
-		ndev->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));
-
-	skb->protocol = eth_type_trans(skb, ndev);
-	netif_rx(skb);
-	ndev->stats.rx_packets++;
-	ndev->stats.rx_bytes += len;
-}
-
-static irqreturn_t
-netx_eth_interrupt(int irq, void *dev_id)
-{
-	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",
-			    __func__, 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 int netx_eth_open(struct net_device *ndev)
-{
-	struct netx_eth_priv *priv = netdev_priv(ndev);
-
-	if (request_irq
-	    (ndev->irq, netx_eth_interrupt, IRQF_SHARED, 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 const struct net_device_ops netx_eth_netdev_ops = {
-	.ndo_open		= netx_eth_open,
-	.ndo_stop		= netx_eth_close,
-	.ndo_start_xmit		= netx_eth_hard_start_xmit,
-	.ndo_tx_timeout		= netx_eth_timeout,
-	.ndo_set_rx_mode	= netx_eth_set_multicast_list,
-	.ndo_validate_addr	= eth_validate_addr,
-	.ndo_set_mac_address	= eth_mac_addr,
-};
-
-static int netx_eth_enable(struct net_device *ndev)
-{
-	struct netx_eth_priv *priv = netdev_priv(ndev);
-	unsigned int mac4321, mac65;
-	int running, i, ret;
-	bool inv_mac_addr = false;
-
-	ndev->netdev_ops = &netx_eth_netdev_ops;
-	ndev->watchdog_timeo = msecs_to_jiffies(5000);
-
-	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))
-		inv_mac_addr = true;
-
-	for (i=2; i<=18; i++)
-		pfifo_push(EMPTY_PTR_FIFO(priv->id),
-			FIFO_PTR_FRAMENO(i) | FIFO_PTR_SEGMENT(priv->id));
-
-	ret = register_netdev(ndev);
-	if (inv_mac_addr)
-		printk("%s: Invalid ethernet MAC address. Please set using ip\n",
-		       ndev->name);
-
-	return ret;
-}
-
-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) {
-		ret = -ENOMEM;
-		goto exit;
-	}
-	SET_NETDEV_DEV(ndev, &pdev->dev);
-
-	platform_set_drvdata(pdev, ndev);
-
-	priv = netdev_priv(ndev);
-
-	pdata = dev_get_platdata(&pdev->dev);
-	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;
-
-	spin_lock_init(&priv->lock);
-
-	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:
-	free_netdev(ndev);
-exit:
-	return ret;
-}
-
-static int netx_eth_drv_remove(struct platform_device *pdev)
-{
-	struct net_device *ndev = platform_get_drvdata(pdev);
-	struct netx_eth_priv *priv = netdev_priv(ndev);
-
-	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,
-	},
-};
-
-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");
-MODULE_ALIAS("platform:" CARDNAME);
-MODULE_FIRMWARE("xc0.bin");
-MODULE_FIRMWARE("xc1.bin");
-MODULE_FIRMWARE("xc2.bin");