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Message-ID: <20150306081738.GF3989@piout.net>
Date: Fri, 6 Mar 2015 09:17:38 +0100
From: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
Nicolas Ferre <nicolas.ferre@...el.com>,
Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Cyrille Pitchen <cyrille.pitchen@...el.com>
Subject: Re: [PATCH v2 2/2] net/macb: merge at91_ether driver into macb driver
On 06/03/2015 at 07:13:59 +0100, Boris Brezillon wrote :
> From: Cyrille Pitchen <cyrille.pitchen@...el.com>
>
> macb and at91_ether drivers can be compiled as modules, but the at91_ether
> driver use some functions and variables defined in the macb one, thus
> creating a dependency on the macb driver.
>
> Since these drivers are sharing the same logic we can easily merge
> at91_ether into macb.
>
> In order to factorize common probing logic we've added an ->init() function
> to struct macb_config (the structure associated with the compatible
> string), and moved macb specific init code from macb_probe to macb_init.
>
> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...el.com>
> Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
Tested-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
> ---
> drivers/net/ethernet/cadence/Kconfig | 8 -
> drivers/net/ethernet/cadence/Makefile | 1 -
> drivers/net/ethernet/cadence/at91_ether.c | 481 ----------------------
> drivers/net/ethernet/cadence/macb.c | 641 ++++++++++++++++++++++--------
> drivers/net/ethernet/cadence/macb.h | 10 +-
> 5 files changed, 485 insertions(+), 656 deletions(-)
> delete mode 100644 drivers/net/ethernet/cadence/at91_ether.c
>
> diff --git a/drivers/net/ethernet/cadence/Kconfig b/drivers/net/ethernet/cadence/Kconfig
> index 321d2ad..fb8d09b 100644
> --- a/drivers/net/ethernet/cadence/Kconfig
> +++ b/drivers/net/ethernet/cadence/Kconfig
> @@ -20,14 +20,6 @@ config NET_CADENCE
>
> if NET_CADENCE
>
> -config ARM_AT91_ETHER
> - tristate "AT91RM9200 Ethernet support"
> - depends on HAS_DMA && (ARCH_AT91 || COMPILE_TEST)
> - select MACB
> - ---help---
> - If you wish to compile a kernel for the AT91RM9200 and enable
> - ethernet support, then you should always answer Y to this.
> -
> config MACB
> tristate "Cadence MACB/GEM support"
> depends on HAS_DMA && (PLATFORM_AT32AP || ARCH_AT91 || ARCH_PICOXCELL || ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST)
> diff --git a/drivers/net/ethernet/cadence/Makefile b/drivers/net/ethernet/cadence/Makefile
> index 9068b83..91f79b1 100644
> --- a/drivers/net/ethernet/cadence/Makefile
> +++ b/drivers/net/ethernet/cadence/Makefile
> @@ -2,5 +2,4 @@
> # Makefile for the Atmel network device drivers.
> #
>
> -obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
> obj-$(CONFIG_MACB) += macb.o
> diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
> deleted file mode 100644
> index 7ef55f5..0000000
> --- a/drivers/net/ethernet/cadence/at91_ether.c
> +++ /dev/null
> @@ -1,481 +0,0 @@
> -/*
> - * Ethernet driver for the Atmel AT91RM9200 (Thunder)
> - *
> - * Copyright (C) 2003 SAN People (Pty) Ltd
> - *
> - * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
> - * Initial version by Rick Bronson 01/11/2003
> - *
> - * 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/init.h>
> -#include <linux/interrupt.h>
> -#include <linux/netdevice.h>
> -#include <linux/etherdevice.h>
> -#include <linux/skbuff.h>
> -#include <linux/dma-mapping.h>
> -#include <linux/ethtool.h>
> -#include <linux/platform_data/macb.h>
> -#include <linux/platform_device.h>
> -#include <linux/clk.h>
> -#include <linux/gfp.h>
> -#include <linux/phy.h>
> -#include <linux/io.h>
> -#include <linux/of.h>
> -#include <linux/of_device.h>
> -#include <linux/of_net.h>
> -
> -#include "macb.h"
> -
> -/* 1518 rounded up */
> -#define MAX_RBUFF_SZ 0x600
> -/* max number of receive buffers */
> -#define MAX_RX_DESCR 9
> -
> -/* Initialize and start the Receiver and Transmit subsystems */
> -static int at91ether_start(struct net_device *dev)
> -{
> - struct macb *lp = netdev_priv(dev);
> - dma_addr_t addr;
> - u32 ctl;
> - int i;
> -
> - lp->rx_ring = dma_alloc_coherent(&lp->pdev->dev,
> - (MAX_RX_DESCR *
> - sizeof(struct macb_dma_desc)),
> - &lp->rx_ring_dma, GFP_KERNEL);
> - if (!lp->rx_ring)
> - return -ENOMEM;
> -
> - lp->rx_buffers = dma_alloc_coherent(&lp->pdev->dev,
> - MAX_RX_DESCR * MAX_RBUFF_SZ,
> - &lp->rx_buffers_dma, GFP_KERNEL);
> - if (!lp->rx_buffers) {
> - dma_free_coherent(&lp->pdev->dev,
> - MAX_RX_DESCR * sizeof(struct macb_dma_desc),
> - lp->rx_ring, lp->rx_ring_dma);
> - lp->rx_ring = NULL;
> - return -ENOMEM;
> - }
> -
> - addr = lp->rx_buffers_dma;
> - for (i = 0; i < MAX_RX_DESCR; i++) {
> - lp->rx_ring[i].addr = addr;
> - lp->rx_ring[i].ctrl = 0;
> - addr += MAX_RBUFF_SZ;
> - }
> -
> - /* Set the Wrap bit on the last descriptor */
> - lp->rx_ring[MAX_RX_DESCR - 1].addr |= MACB_BIT(RX_WRAP);
> -
> - /* Reset buffer index */
> - lp->rx_tail = 0;
> -
> - /* Program address of descriptor list in Rx Buffer Queue register */
> - macb_writel(lp, RBQP, lp->rx_ring_dma);
> -
> - /* Enable Receive and Transmit */
> - ctl = macb_readl(lp, NCR);
> - macb_writel(lp, NCR, ctl | MACB_BIT(RE) | MACB_BIT(TE));
> -
> - return 0;
> -}
> -
> -/* Open the ethernet interface */
> -static int at91ether_open(struct net_device *dev)
> -{
> - struct macb *lp = netdev_priv(dev);
> - u32 ctl;
> - int ret;
> -
> - /* Clear internal statistics */
> - ctl = macb_readl(lp, NCR);
> - macb_writel(lp, NCR, ctl | MACB_BIT(CLRSTAT));
> -
> - macb_set_hwaddr(lp);
> -
> - ret = at91ether_start(dev);
> - if (ret)
> - return ret;
> -
> - /* Enable MAC interrupts */
> - macb_writel(lp, IER, MACB_BIT(RCOMP) |
> - MACB_BIT(RXUBR) |
> - MACB_BIT(ISR_TUND) |
> - MACB_BIT(ISR_RLE) |
> - MACB_BIT(TCOMP) |
> - MACB_BIT(ISR_ROVR) |
> - MACB_BIT(HRESP));
> -
> - /* schedule a link state check */
> - phy_start(lp->phy_dev);
> -
> - netif_start_queue(dev);
> -
> - return 0;
> -}
> -
> -/* Close the interface */
> -static int at91ether_close(struct net_device *dev)
> -{
> - struct macb *lp = netdev_priv(dev);
> - u32 ctl;
> -
> - /* Disable Receiver and Transmitter */
> - ctl = macb_readl(lp, NCR);
> - macb_writel(lp, NCR, ctl & ~(MACB_BIT(TE) | MACB_BIT(RE)));
> -
> - /* Disable MAC interrupts */
> - macb_writel(lp, IDR, MACB_BIT(RCOMP) |
> - MACB_BIT(RXUBR) |
> - MACB_BIT(ISR_TUND) |
> - MACB_BIT(ISR_RLE) |
> - MACB_BIT(TCOMP) |
> - MACB_BIT(ISR_ROVR) |
> - MACB_BIT(HRESP));
> -
> - netif_stop_queue(dev);
> -
> - dma_free_coherent(&lp->pdev->dev,
> - MAX_RX_DESCR * sizeof(struct macb_dma_desc),
> - lp->rx_ring, lp->rx_ring_dma);
> - lp->rx_ring = NULL;
> -
> - dma_free_coherent(&lp->pdev->dev,
> - MAX_RX_DESCR * MAX_RBUFF_SZ,
> - lp->rx_buffers, lp->rx_buffers_dma);
> - lp->rx_buffers = NULL;
> -
> - return 0;
> -}
> -
> -/* Transmit packet */
> -static int at91ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
> -{
> - struct macb *lp = netdev_priv(dev);
> -
> - if (macb_readl(lp, TSR) & MACB_BIT(RM9200_BNQ)) {
> - netif_stop_queue(dev);
> -
> - /* Store packet information (to free when Tx completed) */
> - lp->skb = skb;
> - lp->skb_length = skb->len;
> - lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len,
> - DMA_TO_DEVICE);
> -
> - /* Set address of the data in the Transmit Address register */
> - macb_writel(lp, TAR, lp->skb_physaddr);
> - /* Set length of the packet in the Transmit Control register */
> - macb_writel(lp, TCR, skb->len);
> -
> - } else {
> - netdev_err(dev, "%s called, but device is busy!\n", __func__);
> - return NETDEV_TX_BUSY;
> - }
> -
> - return NETDEV_TX_OK;
> -}
> -
> -/* Extract received frame from buffer descriptors and sent to upper layers.
> - * (Called from interrupt context)
> - */
> -static void at91ether_rx(struct net_device *dev)
> -{
> - struct macb *lp = netdev_priv(dev);
> - unsigned char *p_recv;
> - struct sk_buff *skb;
> - unsigned int pktlen;
> -
> - while (lp->rx_ring[lp->rx_tail].addr & MACB_BIT(RX_USED)) {
> - p_recv = lp->rx_buffers + lp->rx_tail * MAX_RBUFF_SZ;
> - pktlen = MACB_BF(RX_FRMLEN, lp->rx_ring[lp->rx_tail].ctrl);
> - skb = netdev_alloc_skb(dev, pktlen + 2);
> - if (skb) {
> - skb_reserve(skb, 2);
> - memcpy(skb_put(skb, pktlen), p_recv, pktlen);
> -
> - skb->protocol = eth_type_trans(skb, dev);
> - lp->stats.rx_packets++;
> - lp->stats.rx_bytes += pktlen;
> - netif_rx(skb);
> - } else {
> - lp->stats.rx_dropped++;
> - }
> -
> - if (lp->rx_ring[lp->rx_tail].ctrl & MACB_BIT(RX_MHASH_MATCH))
> - lp->stats.multicast++;
> -
> - /* reset ownership bit */
> - lp->rx_ring[lp->rx_tail].addr &= ~MACB_BIT(RX_USED);
> -
> - /* wrap after last buffer */
> - if (lp->rx_tail == MAX_RX_DESCR - 1)
> - lp->rx_tail = 0;
> - else
> - lp->rx_tail++;
> - }
> -}
> -
> -/* MAC interrupt handler */
> -static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
> -{
> - struct net_device *dev = dev_id;
> - struct macb *lp = netdev_priv(dev);
> - u32 intstatus, ctl;
> -
> - /* MAC Interrupt Status register indicates what interrupts are pending.
> - * It is automatically cleared once read.
> - */
> - intstatus = macb_readl(lp, ISR);
> -
> - /* Receive complete */
> - if (intstatus & MACB_BIT(RCOMP))
> - at91ether_rx(dev);
> -
> - /* Transmit complete */
> - if (intstatus & MACB_BIT(TCOMP)) {
> - /* The TCOM bit is set even if the transmission failed */
> - if (intstatus & (MACB_BIT(ISR_TUND) | MACB_BIT(ISR_RLE)))
> - lp->stats.tx_errors++;
> -
> - if (lp->skb) {
> - dev_kfree_skb_irq(lp->skb);
> - lp->skb = NULL;
> - dma_unmap_single(NULL, lp->skb_physaddr, lp->skb_length, DMA_TO_DEVICE);
> - lp->stats.tx_packets++;
> - lp->stats.tx_bytes += lp->skb_length;
> - }
> - netif_wake_queue(dev);
> - }
> -
> - /* Work-around for EMAC Errata section 41.3.1 */
> - if (intstatus & MACB_BIT(RXUBR)) {
> - ctl = macb_readl(lp, NCR);
> - macb_writel(lp, NCR, ctl & ~MACB_BIT(RE));
> - macb_writel(lp, NCR, ctl | MACB_BIT(RE));
> - }
> -
> - if (intstatus & MACB_BIT(ISR_ROVR))
> - netdev_err(dev, "ROVR error\n");
> -
> - return IRQ_HANDLED;
> -}
> -
> -#ifdef CONFIG_NET_POLL_CONTROLLER
> -static void at91ether_poll_controller(struct net_device *dev)
> -{
> - unsigned long flags;
> -
> - local_irq_save(flags);
> - at91ether_interrupt(dev->irq, dev);
> - local_irq_restore(flags);
> -}
> -#endif
> -
> -static const struct net_device_ops at91ether_netdev_ops = {
> - .ndo_open = at91ether_open,
> - .ndo_stop = at91ether_close,
> - .ndo_start_xmit = at91ether_start_xmit,
> - .ndo_get_stats = macb_get_stats,
> - .ndo_set_rx_mode = macb_set_rx_mode,
> - .ndo_set_mac_address = eth_mac_addr,
> - .ndo_do_ioctl = macb_ioctl,
> - .ndo_validate_addr = eth_validate_addr,
> - .ndo_change_mtu = eth_change_mtu,
> -#ifdef CONFIG_NET_POLL_CONTROLLER
> - .ndo_poll_controller = at91ether_poll_controller,
> -#endif
> -};
> -
> -#if defined(CONFIG_OF)
> -static const struct of_device_id at91ether_dt_ids[] = {
> - { .compatible = "cdns,at91rm9200-emac" },
> - { .compatible = "cdns,emac" },
> - { /* sentinel */ }
> -};
> -MODULE_DEVICE_TABLE(of, at91ether_dt_ids);
> -#endif
> -
> -/* Detect MAC & PHY and perform ethernet interface initialization */
> -static int __init at91ether_probe(struct platform_device *pdev)
> -{
> - struct macb_platform_data *board_data = dev_get_platdata(&pdev->dev);
> - struct resource *regs;
> - struct net_device *dev;
> - struct phy_device *phydev;
> - struct macb *lp;
> - int res;
> - u32 reg;
> - const char *mac;
> -
> - regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (!regs)
> - return -ENOENT;
> -
> - dev = alloc_etherdev(sizeof(struct macb));
> - if (!dev)
> - return -ENOMEM;
> -
> - lp = netdev_priv(dev);
> - lp->pdev = pdev;
> - lp->dev = dev;
> - spin_lock_init(&lp->lock);
> -
> - /* physical base address */
> - dev->base_addr = regs->start;
> - lp->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
> - if (!lp->regs) {
> - res = -ENOMEM;
> - goto err_free_dev;
> - }
> -
> - /* Clock */
> - lp->pclk = devm_clk_get(&pdev->dev, "ether_clk");
> - if (IS_ERR(lp->pclk)) {
> - res = PTR_ERR(lp->pclk);
> - goto err_free_dev;
> - }
> - clk_prepare_enable(lp->pclk);
> -
> - lp->hclk = ERR_PTR(-ENOENT);
> - lp->tx_clk = ERR_PTR(-ENOENT);
> -
> - /* Install the interrupt handler */
> - dev->irq = platform_get_irq(pdev, 0);
> - res = devm_request_irq(&pdev->dev, dev->irq, at91ether_interrupt, 0, dev->name, dev);
> - if (res)
> - goto err_disable_clock;
> -
> - dev->netdev_ops = &at91ether_netdev_ops;
> - dev->ethtool_ops = &macb_ethtool_ops;
> - platform_set_drvdata(pdev, dev);
> - SET_NETDEV_DEV(dev, &pdev->dev);
> -
> - mac = of_get_mac_address(pdev->dev.of_node);
> - if (mac)
> - memcpy(lp->dev->dev_addr, mac, ETH_ALEN);
> - else
> - macb_get_hwaddr(lp);
> -
> - res = of_get_phy_mode(pdev->dev.of_node);
> - if (res < 0) {
> - if (board_data && board_data->is_rmii)
> - lp->phy_interface = PHY_INTERFACE_MODE_RMII;
> - else
> - lp->phy_interface = PHY_INTERFACE_MODE_MII;
> - } else {
> - lp->phy_interface = res;
> - }
> -
> - macb_writel(lp, NCR, 0);
> -
> - reg = MACB_BF(CLK, MACB_CLK_DIV32) | MACB_BIT(BIG);
> - if (lp->phy_interface == PHY_INTERFACE_MODE_RMII)
> - reg |= MACB_BIT(RM9200_RMII);
> -
> - macb_writel(lp, NCFGR, reg);
> -
> - /* Register the network interface */
> - res = register_netdev(dev);
> - if (res)
> - goto err_disable_clock;
> -
> - res = macb_mii_init(lp);
> - if (res)
> - goto err_out_unregister_netdev;
> -
> - /* will be enabled in open() */
> - netif_carrier_off(dev);
> -
> - phydev = lp->phy_dev;
> - netdev_info(dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
> - phydev->drv->name, dev_name(&phydev->dev),
> - phydev->irq);
> -
> - /* Display ethernet banner */
> - netdev_info(dev, "AT91 ethernet at 0x%08lx int=%d (%pM)\n",
> - dev->base_addr, dev->irq, dev->dev_addr);
> -
> - return 0;
> -
> -err_out_unregister_netdev:
> - unregister_netdev(dev);
> -err_disable_clock:
> - clk_disable_unprepare(lp->pclk);
> -err_free_dev:
> - free_netdev(dev);
> - return res;
> -}
> -
> -static int at91ether_remove(struct platform_device *pdev)
> -{
> - struct net_device *dev = platform_get_drvdata(pdev);
> - struct macb *lp = netdev_priv(dev);
> -
> - if (lp->phy_dev)
> - phy_disconnect(lp->phy_dev);
> -
> - mdiobus_unregister(lp->mii_bus);
> - kfree(lp->mii_bus->irq);
> - mdiobus_free(lp->mii_bus);
> - unregister_netdev(dev);
> - clk_disable_unprepare(lp->pclk);
> - free_netdev(dev);
> -
> - return 0;
> -}
> -
> -#ifdef CONFIG_PM
> -static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
> -{
> - struct net_device *net_dev = platform_get_drvdata(pdev);
> - struct macb *lp = netdev_priv(net_dev);
> -
> - if (netif_running(net_dev)) {
> - netif_stop_queue(net_dev);
> - netif_device_detach(net_dev);
> -
> - clk_disable_unprepare(lp->pclk);
> - }
> - return 0;
> -}
> -
> -static int at91ether_resume(struct platform_device *pdev)
> -{
> - struct net_device *net_dev = platform_get_drvdata(pdev);
> - struct macb *lp = netdev_priv(net_dev);
> -
> - if (netif_running(net_dev)) {
> - clk_prepare_enable(lp->pclk);
> -
> - netif_device_attach(net_dev);
> - netif_start_queue(net_dev);
> - }
> - return 0;
> -}
> -#else
> -#define at91ether_suspend NULL
> -#define at91ether_resume NULL
> -#endif
> -
> -static struct platform_driver at91ether_driver = {
> - .remove = at91ether_remove,
> - .suspend = at91ether_suspend,
> - .resume = at91ether_resume,
> - .driver = {
> - .name = "at91_ether",
> - .of_match_table = of_match_ptr(at91ether_dt_ids),
> - },
> -};
> -
> -module_platform_driver_probe(at91ether_driver, at91ether_probe);
> -
> -MODULE_LICENSE("GPL");
> -MODULE_DESCRIPTION("AT91RM9200 EMAC Ethernet driver");
> -MODULE_AUTHOR("Andrew Victor");
> -MODULE_ALIAS("platform:at91_ether");
> diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
> index a429cf8..5c8243fe 100644
> --- a/drivers/net/ethernet/cadence/macb.c
> +++ b/drivers/net/ethernet/cadence/macb.c
> @@ -102,7 +102,7 @@ static void *macb_rx_buffer(struct macb *bp, unsigned int index)
> return bp->rx_buffers + bp->rx_buffer_size * macb_rx_ring_wrap(index);
> }
>
> -void macb_set_hwaddr(struct macb *bp)
> +static void macb_set_hwaddr(struct macb *bp)
> {
> u32 bottom;
> u16 top;
> @@ -120,9 +120,8 @@ void macb_set_hwaddr(struct macb *bp)
> macb_or_gem_writel(bp, SA4B, 0);
> macb_or_gem_writel(bp, SA4T, 0);
> }
> -EXPORT_SYMBOL_GPL(macb_set_hwaddr);
>
> -void macb_get_hwaddr(struct macb *bp)
> +static void macb_get_hwaddr(struct macb *bp)
> {
> struct macb_platform_data *pdata;
> u32 bottom;
> @@ -162,7 +161,6 @@ void macb_get_hwaddr(struct macb *bp)
> netdev_info(bp->dev, "invalid hw address, using random\n");
> eth_hw_addr_random(bp->dev);
> }
> -EXPORT_SYMBOL_GPL(macb_get_hwaddr);
>
> static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
> {
> @@ -359,7 +357,7 @@ static int macb_mii_probe(struct net_device *dev)
> return 0;
> }
>
> -int macb_mii_init(struct macb *bp)
> +static int macb_mii_init(struct macb *bp)
> {
> struct macb_platform_data *pdata;
> struct device_node *np;
> @@ -440,7 +438,6 @@ err_out_free_mdiobus:
> err_out:
> return err;
> }
> -EXPORT_SYMBOL_GPL(macb_mii_init);
>
> static void macb_update_stats(struct macb *bp)
> {
> @@ -1725,7 +1722,7 @@ static void macb_sethashtable(struct net_device *dev)
> /*
> * Enable/Disable promiscuous and multicast modes.
> */
> -void macb_set_rx_mode(struct net_device *dev)
> +static void macb_set_rx_mode(struct net_device *dev)
> {
> unsigned long cfg;
> struct macb *bp = netdev_priv(dev);
> @@ -1766,7 +1763,6 @@ void macb_set_rx_mode(struct net_device *dev)
>
> macb_writel(bp, NCFGR, cfg);
> }
> -EXPORT_SYMBOL_GPL(macb_set_rx_mode);
>
> static int macb_open(struct net_device *dev)
> {
> @@ -1919,7 +1915,7 @@ static void gem_get_ethtool_strings(struct net_device *dev, u32 sset, u8 *p)
> }
> }
>
> -struct net_device_stats *macb_get_stats(struct net_device *dev)
> +static struct net_device_stats *macb_get_stats(struct net_device *dev)
> {
> struct macb *bp = netdev_priv(dev);
> struct net_device_stats *nstat = &bp->stats;
> @@ -1965,7 +1961,6 @@ struct net_device_stats *macb_get_stats(struct net_device *dev)
>
> return nstat;
> }
> -EXPORT_SYMBOL_GPL(macb_get_stats);
>
> static int macb_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
> {
> @@ -2027,7 +2022,7 @@ static void macb_get_regs(struct net_device *dev, struct ethtool_regs *regs,
> }
> }
>
> -const struct ethtool_ops macb_ethtool_ops = {
> +static const struct ethtool_ops macb_ethtool_ops = {
> .get_settings = macb_get_settings,
> .set_settings = macb_set_settings,
> .get_regs_len = macb_get_regs_len,
> @@ -2035,7 +2030,6 @@ const struct ethtool_ops macb_ethtool_ops = {
> .get_link = ethtool_op_get_link,
> .get_ts_info = ethtool_op_get_ts_info,
> };
> -EXPORT_SYMBOL_GPL(macb_ethtool_ops);
>
> static const struct ethtool_ops gem_ethtool_ops = {
> .get_settings = macb_get_settings,
> @@ -2049,7 +2043,7 @@ static const struct ethtool_ops gem_ethtool_ops = {
> .get_sset_count = gem_get_sset_count,
> };
>
> -int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
> +static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
> {
> struct macb *bp = netdev_priv(dev);
> struct phy_device *phydev = bp->phy_dev;
> @@ -2062,7 +2056,6 @@ int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
>
> return phy_mii_ioctl(phydev, rq, cmd);
> }
> -EXPORT_SYMBOL_GPL(macb_ioctl);
>
> static int macb_set_features(struct net_device *netdev,
> netdev_features_t features)
> @@ -2114,39 +2107,6 @@ static const struct net_device_ops macb_netdev_ops = {
> .ndo_set_features = macb_set_features,
> };
>
> -#if defined(CONFIG_OF)
> -static struct macb_config at91sam9260_config = {
> - .caps = MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_USRIO_DEFAULT_IS_MII,
> -};
> -
> -static struct macb_config pc302gem_config = {
> - .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE,
> - .dma_burst_length = 16,
> -};
> -
> -static struct macb_config sama5d3_config = {
> - .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE,
> - .dma_burst_length = 16,
> -};
> -
> -static struct macb_config sama5d4_config = {
> - .caps = 0,
> - .dma_burst_length = 4,
> -};
> -
> -static const struct of_device_id macb_dt_ids[] = {
> - { .compatible = "cdns,at32ap7000-macb" },
> - { .compatible = "cdns,at91sam9260-macb", .data = &at91sam9260_config },
> - { .compatible = "cdns,macb" },
> - { .compatible = "cdns,pc302-gem", .data = &pc302gem_config },
> - { .compatible = "cdns,gem", .data = &pc302gem_config },
> - { .compatible = "atmel,sama5d3-gem", .data = &sama5d3_config },
> - { .compatible = "atmel,sama5d4-gem", .data = &sama5d4_config },
> - { /* sentinel */ }
> -};
> -MODULE_DEVICE_TABLE(of, macb_dt_ids);
> -#endif
> -
> /*
> * Configure peripheral capacities according to device tree
> * and integration options used
> @@ -2154,22 +2114,6 @@ MODULE_DEVICE_TABLE(of, macb_dt_ids);
> static void macb_configure_caps(struct macb *bp)
> {
> u32 dcfg;
> - const struct of_device_id *match;
> - const struct macb_config *config;
> -
> - if (bp->pdev->dev.of_node) {
> - match = of_match_node(macb_dt_ids, bp->pdev->dev.of_node);
> - if (match && match->data) {
> - config = (const struct macb_config *)match->data;
> -
> - bp->caps = config->caps;
> - /*
> - * As we have access to the matching node, configure
> - * DMA burst length as well
> - */
> - bp->dma_burst_length = config->dma_burst_length;
> - }
> - }
>
> if (MACB_BFEXT(IDNUM, macb_readl(bp, MID)) == 0x2)
> bp->caps |= MACB_CAPS_MACB_IS_GEM;
> @@ -2210,92 +2154,57 @@ static void macb_probe_queues(void __iomem *mem,
> (*num_queues)++;
> }
>
> -static int macb_probe(struct platform_device *pdev)
> +static int macb_init(struct platform_device *pdev)
> {
> - struct macb_platform_data *pdata;
> - struct resource *regs;
> - struct net_device *dev;
> - struct macb *bp;
> - struct macb_queue *queue;
> - struct phy_device *phydev;
> - u32 config;
> - int err = -ENXIO;
> - const char *mac;
> - void __iomem *mem;
> + struct net_device *dev = platform_get_drvdata(pdev);
> unsigned int hw_q, queue_mask, q, num_queues;
> - struct clk *pclk, *hclk, *tx_clk;
> -
> - regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (!regs) {
> - dev_err(&pdev->dev, "no mmio resource defined\n");
> - goto err_out;
> - }
> + struct macb *bp = netdev_priv(dev);
> + struct macb_queue *queue;
> + int err;
> + u32 val;
>
> - pclk = devm_clk_get(&pdev->dev, "pclk");
> - if (IS_ERR(pclk)) {
> - err = PTR_ERR(pclk);
> + bp->pclk = devm_clk_get(&pdev->dev, "pclk");
> + if (IS_ERR(bp->pclk)) {
> + err = PTR_ERR(bp->pclk);
> dev_err(&pdev->dev, "failed to get macb_clk (%u)\n", err);
> - goto err_out;
> + return err;
> }
>
> - hclk = devm_clk_get(&pdev->dev, "hclk");
> - if (IS_ERR(hclk)) {
> - err = PTR_ERR(hclk);
> + bp->hclk = devm_clk_get(&pdev->dev, "hclk");
> + if (IS_ERR(bp->hclk)) {
> + err = PTR_ERR(bp->hclk);
> dev_err(&pdev->dev, "failed to get hclk (%u)\n", err);
> - goto err_out;
> + return err;
> }
>
> - tx_clk = devm_clk_get(&pdev->dev, "tx_clk");
> - if (IS_ERR(tx_clk))
> - tx_clk = NULL;
> + bp->tx_clk = devm_clk_get(&pdev->dev, "tx_clk");
> + if (IS_ERR(bp->tx_clk))
> + bp->tx_clk = NULL;
>
> - err = clk_prepare_enable(pclk);
> + err = clk_prepare_enable(bp->pclk);
> if (err) {
> dev_err(&pdev->dev, "failed to enable pclk (%u)\n", err);
> - goto err_out;
> + return err;
> }
>
> - err = clk_prepare_enable(hclk);
> + err = clk_prepare_enable(bp->hclk);
> if (err) {
> dev_err(&pdev->dev, "failed to enable hclk (%u)\n", err);
> - goto err_out_disable_pclk;
> + goto err_disable_pclk;
> }
>
> - err = clk_prepare_enable(tx_clk);
> + err = clk_prepare_enable(bp->tx_clk);
> if (err) {
> dev_err(&pdev->dev, "failed to enable tx_clk (%u)\n", err);
> - goto err_out_disable_hclk;
> - }
> -
> - err = -ENOMEM;
> - mem = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
> - if (!mem) {
> - dev_err(&pdev->dev, "failed to map registers, aborting.\n");
> - goto err_out_disable_clocks;
> + goto err_disable_hclk;
> }
>
> - macb_probe_queues(mem, &queue_mask, &num_queues);
> - dev = alloc_etherdev_mq(sizeof(*bp), num_queues);
> - if (!dev)
> - goto err_out_disable_clocks;
> -
> - SET_NETDEV_DEV(dev, &pdev->dev);
> -
> - bp = netdev_priv(dev);
> - bp->pdev = pdev;
> - bp->dev = dev;
> - bp->regs = mem;
> - bp->num_queues = num_queues;
> - bp->pclk = pclk;
> - bp->hclk = hclk;
> - bp->tx_clk = tx_clk;
> -
> - spin_lock_init(&bp->lock);
> -
> /* set the queue register mapping once for all: queue0 has a special
> * register mapping but we don't want to test the queue index then
> * compute the corresponding register offset at run time.
> */
> + macb_probe_queues(bp->regs, &queue_mask, &num_queues);
> +
> for (hw_q = 0, q = 0; hw_q < MACB_MAX_QUEUES; ++hw_q) {
> if (!(queue_mask & (1 << hw_q)))
> continue;
> @@ -2329,22 +2238,16 @@ static int macb_probe(struct platform_device *pdev)
> dev_err(&pdev->dev,
> "Unable to request IRQ %d (error %d)\n",
> queue->irq, err);
> - goto err_out_free_netdev;
> + goto err_disable_tx_clk;
> }
>
> INIT_WORK(&queue->tx_error_task, macb_tx_error_task);
> q++;
> }
> - dev->irq = bp->queues[0].irq;
>
> dev->netdev_ops = &macb_netdev_ops;
> netif_napi_add(dev, &bp->napi, macb_poll, 64);
>
> - dev->base_addr = regs->start;
> -
> - /* setup capacities */
> - macb_configure_caps(bp);
> -
> /* setup appropriated routines according to adapter type */
> if (macb_is_gem(bp)) {
> bp->max_tx_length = GEM_MAX_TX_LEN;
> @@ -2371,18 +2274,440 @@ static int macb_probe(struct platform_device *pdev)
> dev->hw_features &= ~NETIF_F_SG;
> dev->features = dev->hw_features;
>
> + val = 0;
> + if (bp->phy_interface == PHY_INTERFACE_MODE_RGMII)
> + val = GEM_BIT(RGMII);
> + else if (bp->phy_interface == PHY_INTERFACE_MODE_RMII &&
> + (bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
> + val = MACB_BIT(RMII);
> + else if (bp->phy_interface == PHY_INTERFACE_MODE_MII &&
> + !(bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
> + val = MACB_BIT(MII);
> +
> + if (bp->caps & MACB_CAPS_USRIO_HAS_CLKEN)
> + val |= MACB_BIT(CLKEN);
> +
> + macb_or_gem_writel(bp, USRIO, val);
> +
> + /* setup capacities */
> + macb_configure_caps(bp);
> +
> /* Set MII management clock divider */
> - config = macb_mdc_clk_div(bp);
> - config |= macb_dbw(bp);
> - macb_writel(bp, NCFGR, config);
> + val = macb_mdc_clk_div(bp);
> + val |= macb_dbw(bp);
> + macb_writel(bp, NCFGR, val);
> +
> + return 0;
> +
> +err_disable_tx_clk:
> + clk_disable_unprepare(bp->tx_clk);
> +
> +err_disable_hclk:
> + clk_disable_unprepare(bp->hclk);
> +
> +err_disable_pclk:
> + clk_disable_unprepare(bp->pclk);
> +
> + return err;
> +}
> +
> +#if defined(CONFIG_OF)
> +/* 1518 rounded up */
> +#define AT91ETHER_MAX_RBUFF_SZ 0x600
> +/* max number of receive buffers */
> +#define AT91ETHER_MAX_RX_DESCR 9
> +
> +/* Initialize and start the Receiver and Transmit subsystems */
> +static int at91ether_start(struct net_device *dev)
> +{
> + struct macb *lp = netdev_priv(dev);
> + dma_addr_t addr;
> + u32 ctl;
> + int i;
> +
> + lp->rx_ring = dma_alloc_coherent(&lp->pdev->dev,
> + (AT91ETHER_MAX_RX_DESCR *
> + sizeof(struct macb_dma_desc)),
> + &lp->rx_ring_dma, GFP_KERNEL);
> + if (!lp->rx_ring)
> + return -ENOMEM;
> +
> + lp->rx_buffers = dma_alloc_coherent(&lp->pdev->dev,
> + AT91ETHER_MAX_RX_DESCR *
> + AT91ETHER_MAX_RBUFF_SZ,
> + &lp->rx_buffers_dma, GFP_KERNEL);
> + if (!lp->rx_buffers) {
> + dma_free_coherent(&lp->pdev->dev,
> + AT91ETHER_MAX_RX_DESCR *
> + sizeof(struct macb_dma_desc),
> + lp->rx_ring, lp->rx_ring_dma);
> + lp->rx_ring = NULL;
> + return -ENOMEM;
> + }
> +
> + addr = lp->rx_buffers_dma;
> + for (i = 0; i < AT91ETHER_MAX_RX_DESCR; i++) {
> + lp->rx_ring[i].addr = addr;
> + lp->rx_ring[i].ctrl = 0;
> + addr += AT91ETHER_MAX_RBUFF_SZ;
> + }
> +
> + /* Set the Wrap bit on the last descriptor */
> + lp->rx_ring[AT91ETHER_MAX_RX_DESCR - 1].addr |= MACB_BIT(RX_WRAP);
> +
> + /* Reset buffer index */
> + lp->rx_tail = 0;
> +
> + /* Program address of descriptor list in Rx Buffer Queue register */
> + macb_writel(lp, RBQP, lp->rx_ring_dma);
> +
> + /* Enable Receive and Transmit */
> + ctl = macb_readl(lp, NCR);
> + macb_writel(lp, NCR, ctl | MACB_BIT(RE) | MACB_BIT(TE));
> +
> + return 0;
> +}
> +
> +/* Open the ethernet interface */
> +static int at91ether_open(struct net_device *dev)
> +{
> + struct macb *lp = netdev_priv(dev);
> + u32 ctl;
> + int ret;
> +
> + /* Clear internal statistics */
> + ctl = macb_readl(lp, NCR);
> + macb_writel(lp, NCR, ctl | MACB_BIT(CLRSTAT));
> +
> + macb_set_hwaddr(lp);
> +
> + ret = at91ether_start(dev);
> + if (ret)
> + return ret;
> +
> + /* Enable MAC interrupts */
> + macb_writel(lp, IER, MACB_BIT(RCOMP) |
> + MACB_BIT(RXUBR) |
> + MACB_BIT(ISR_TUND) |
> + MACB_BIT(ISR_RLE) |
> + MACB_BIT(TCOMP) |
> + MACB_BIT(ISR_ROVR) |
> + MACB_BIT(HRESP));
> +
> + /* schedule a link state check */
> + phy_start(lp->phy_dev);
> +
> + netif_start_queue(dev);
> +
> + return 0;
> +}
> +
> +/* Close the interface */
> +static int at91ether_close(struct net_device *dev)
> +{
> + struct macb *lp = netdev_priv(dev);
> + u32 ctl;
> +
> + /* Disable Receiver and Transmitter */
> + ctl = macb_readl(lp, NCR);
> + macb_writel(lp, NCR, ctl & ~(MACB_BIT(TE) | MACB_BIT(RE)));
> +
> + /* Disable MAC interrupts */
> + macb_writel(lp, IDR, MACB_BIT(RCOMP) |
> + MACB_BIT(RXUBR) |
> + MACB_BIT(ISR_TUND) |
> + MACB_BIT(ISR_RLE) |
> + MACB_BIT(TCOMP) |
> + MACB_BIT(ISR_ROVR) |
> + MACB_BIT(HRESP));
> +
> + netif_stop_queue(dev);
> +
> + dma_free_coherent(&lp->pdev->dev,
> + AT91ETHER_MAX_RX_DESCR *
> + sizeof(struct macb_dma_desc),
> + lp->rx_ring, lp->rx_ring_dma);
> + lp->rx_ring = NULL;
> +
> + dma_free_coherent(&lp->pdev->dev,
> + AT91ETHER_MAX_RX_DESCR * AT91ETHER_MAX_RBUFF_SZ,
> + lp->rx_buffers, lp->rx_buffers_dma);
> + lp->rx_buffers = NULL;
> +
> + return 0;
> +}
> +
> +/* Transmit packet */
> +static int at91ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
> + struct macb *lp = netdev_priv(dev);
> +
> + if (macb_readl(lp, TSR) & MACB_BIT(RM9200_BNQ)) {
> + netif_stop_queue(dev);
> +
> + /* Store packet information (to free when Tx completed) */
> + lp->skb = skb;
> + lp->skb_length = skb->len;
> + lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len,
> + DMA_TO_DEVICE);
> +
> + /* Set address of the data in the Transmit Address register */
> + macb_writel(lp, TAR, lp->skb_physaddr);
> + /* Set length of the packet in the Transmit Control register */
> + macb_writel(lp, TCR, skb->len);
>
> - mac = of_get_mac_address(pdev->dev.of_node);
> + } else {
> + netdev_err(dev, "%s called, but device is busy!\n", __func__);
> + return NETDEV_TX_BUSY;
> + }
> +
> + return NETDEV_TX_OK;
> +}
> +
> +/* Extract received frame from buffer descriptors and sent to upper layers.
> + * (Called from interrupt context)
> + */
> +static void at91ether_rx(struct net_device *dev)
> +{
> + struct macb *lp = netdev_priv(dev);
> + unsigned char *p_recv;
> + struct sk_buff *skb;
> + unsigned int pktlen;
> +
> + while (lp->rx_ring[lp->rx_tail].addr & MACB_BIT(RX_USED)) {
> + p_recv = lp->rx_buffers + lp->rx_tail * AT91ETHER_MAX_RBUFF_SZ;
> + pktlen = MACB_BF(RX_FRMLEN, lp->rx_ring[lp->rx_tail].ctrl);
> + skb = netdev_alloc_skb(dev, pktlen + 2);
> + if (skb) {
> + skb_reserve(skb, 2);
> + memcpy(skb_put(skb, pktlen), p_recv, pktlen);
> +
> + skb->protocol = eth_type_trans(skb, dev);
> + lp->stats.rx_packets++;
> + lp->stats.rx_bytes += pktlen;
> + netif_rx(skb);
> + } else {
> + lp->stats.rx_dropped++;
> + }
> +
> + if (lp->rx_ring[lp->rx_tail].ctrl & MACB_BIT(RX_MHASH_MATCH))
> + lp->stats.multicast++;
> +
> + /* reset ownership bit */
> + lp->rx_ring[lp->rx_tail].addr &= ~MACB_BIT(RX_USED);
> +
> + /* wrap after last buffer */
> + if (lp->rx_tail == AT91ETHER_MAX_RX_DESCR - 1)
> + lp->rx_tail = 0;
> + else
> + lp->rx_tail++;
> + }
> +}
> +
> +/* MAC interrupt handler */
> +static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
> +{
> + struct net_device *dev = dev_id;
> + struct macb *lp = netdev_priv(dev);
> + u32 intstatus, ctl;
> +
> + /* MAC Interrupt Status register indicates what interrupts are pending.
> + * It is automatically cleared once read.
> + */
> + intstatus = macb_readl(lp, ISR);
> +
> + /* Receive complete */
> + if (intstatus & MACB_BIT(RCOMP))
> + at91ether_rx(dev);
> +
> + /* Transmit complete */
> + if (intstatus & MACB_BIT(TCOMP)) {
> + /* The TCOM bit is set even if the transmission failed */
> + if (intstatus & (MACB_BIT(ISR_TUND) | MACB_BIT(ISR_RLE)))
> + lp->stats.tx_errors++;
> +
> + if (lp->skb) {
> + dev_kfree_skb_irq(lp->skb);
> + lp->skb = NULL;
> + dma_unmap_single(NULL, lp->skb_physaddr,
> + lp->skb_length, DMA_TO_DEVICE);
> + lp->stats.tx_packets++;
> + lp->stats.tx_bytes += lp->skb_length;
> + }
> + netif_wake_queue(dev);
> + }
> +
> + /* Work-around for EMAC Errata section 41.3.1 */
> + if (intstatus & MACB_BIT(RXUBR)) {
> + ctl = macb_readl(lp, NCR);
> + macb_writel(lp, NCR, ctl & ~MACB_BIT(RE));
> + macb_writel(lp, NCR, ctl | MACB_BIT(RE));
> + }
> +
> + if (intstatus & MACB_BIT(ISR_ROVR))
> + netdev_err(dev, "ROVR error\n");
> +
> + return IRQ_HANDLED;
> +}
> +
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +static void at91ether_poll_controller(struct net_device *dev)
> +{
> + unsigned long flags;
> +
> + local_irq_save(flags);
> + at91ether_interrupt(dev->irq, dev);
> + local_irq_restore(flags);
> +}
> +#endif
> +
> +static const struct net_device_ops at91ether_netdev_ops = {
> + .ndo_open = at91ether_open,
> + .ndo_stop = at91ether_close,
> + .ndo_start_xmit = at91ether_start_xmit,
> + .ndo_get_stats = macb_get_stats,
> + .ndo_set_rx_mode = macb_set_rx_mode,
> + .ndo_set_mac_address = eth_mac_addr,
> + .ndo_do_ioctl = macb_ioctl,
> + .ndo_validate_addr = eth_validate_addr,
> + .ndo_change_mtu = eth_change_mtu,
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> + .ndo_poll_controller = at91ether_poll_controller,
> +#endif
> +};
> +
> +static int at91ether_init(struct platform_device *pdev)
> +{
> + struct net_device *dev = platform_get_drvdata(pdev);
> + struct macb *bp = netdev_priv(dev);
> + int err;
> + u32 reg;
> +
> + bp->pclk = devm_clk_get(&pdev->dev, "ether_clk");
> + if (IS_ERR(bp->pclk))
> + return PTR_ERR(bp->pclk);
> +
> + err = clk_prepare_enable(bp->pclk);
> + if (err) {
> + dev_err(&pdev->dev, "failed to enable pclk (%u)\n", err);
> + return err;
> + }
> +
> + dev->netdev_ops = &at91ether_netdev_ops;
> + dev->ethtool_ops = &macb_ethtool_ops;
> +
> + err = devm_request_irq(&pdev->dev, dev->irq, at91ether_interrupt,
> + 0, dev->name, dev);
> + if (err)
> + goto err_disable_clk;
> +
> + macb_writel(bp, NCR, 0);
> +
> + reg = MACB_BF(CLK, MACB_CLK_DIV32) | MACB_BIT(BIG);
> + if (bp->phy_interface == PHY_INTERFACE_MODE_RMII)
> + reg |= MACB_BIT(RM9200_RMII);
> +
> + macb_writel(bp, NCFGR, reg);
> +
> + return 0;
> +
> +err_disable_clk:
> + clk_disable_unprepare(bp->pclk);
> +
> + return err;
> +}
> +
> +static struct macb_config at91sam9260_config = {
> + .caps = MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_USRIO_DEFAULT_IS_MII,
> + .init = macb_init,
> +};
> +
> +static struct macb_config pc302gem_config = {
> + .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE,
> + .dma_burst_length = 16,
> + .init = macb_init,
> +};
> +
> +static struct macb_config sama5d3_config = {
> + .caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE,
> + .dma_burst_length = 16,
> + .init = macb_init,
> +};
> +
> +static struct macb_config sama5d4_config = {
> + .caps = 0,
> + .dma_burst_length = 4,
> + .init = macb_init,
> +};
> +
> +static struct macb_config emac_config = {
> + .init = at91ether_init,
> +};
> +
> +static const struct of_device_id macb_dt_ids[] = {
> + { .compatible = "cdns,at32ap7000-macb" },
> + { .compatible = "cdns,at91sam9260-macb", .data = &at91sam9260_config },
> + { .compatible = "cdns,macb" },
> + { .compatible = "cdns,pc302-gem", .data = &pc302gem_config },
> + { .compatible = "cdns,gem", .data = &pc302gem_config },
> + { .compatible = "atmel,sama5d3-gem", .data = &sama5d3_config },
> + { .compatible = "atmel,sama5d4-gem", .data = &sama5d4_config },
> + { .compatible = "cdns,at91rm9200-emac", .data = &emac_config },
> + { .compatible = "cdns,emac", .data = &emac_config },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, macb_dt_ids);
> +#endif /* CONFIG_OF */
> +
> +static int macb_probe(struct platform_device *pdev)
> +{
> + int (*init)(struct platform_device *) = macb_init;
> + struct device_node *np = pdev->dev.of_node;
> + const struct macb_config *macb_config = NULL;
> + unsigned int queue_mask, num_queues;
> + struct macb_platform_data *pdata;
> + struct phy_device *phydev;
> + struct net_device *dev;
> + struct resource *regs;
> + void __iomem *mem;
> + const char *mac;
> + struct macb *bp;
> + int err;
> +
> + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + mem = devm_ioremap_resource(&pdev->dev, regs);
> + if (IS_ERR(mem))
> + return PTR_ERR(mem);
> +
> + macb_probe_queues(mem, &queue_mask, &num_queues);
> + dev = alloc_etherdev_mq(sizeof(*bp), num_queues);
> + if (!dev)
> + return -ENOMEM;
> +
> + dev->base_addr = regs->start;
> +
> + SET_NETDEV_DEV(dev, &pdev->dev);
> +
> + bp = netdev_priv(dev);
> + bp->pdev = pdev;
> + bp->dev = dev;
> + bp->regs = mem;
> + bp->num_queues = num_queues;
> + spin_lock_init(&bp->lock);
> +
> + platform_set_drvdata(pdev, dev);
> +
> + dev->irq = platform_get_irq(pdev, 0);
> + if (dev->irq < 0)
> + return dev->irq;
> +
> + mac = of_get_mac_address(np);
> if (mac)
> memcpy(bp->dev->dev_addr, mac, ETH_ALEN);
> else
> macb_get_hwaddr(bp);
>
> - err = of_get_phy_mode(pdev->dev.of_node);
> + err = of_get_phy_mode(np);
> if (err < 0) {
> pdata = dev_get_platdata(&pdev->dev);
> if (pdata && pdata->is_rmii)
> @@ -2393,33 +2718,35 @@ static int macb_probe(struct platform_device *pdev)
> bp->phy_interface = err;
> }
>
> - config = 0;
> - if (bp->phy_interface == PHY_INTERFACE_MODE_RGMII)
> - config = GEM_BIT(RGMII);
> - else if (bp->phy_interface == PHY_INTERFACE_MODE_RMII &&
> - (bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
> - config = MACB_BIT(RMII);
> - else if (bp->phy_interface == PHY_INTERFACE_MODE_MII &&
> - !(bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
> - config = MACB_BIT(MII);
> + if (np) {
> + const struct of_device_id *match;
>
> - if (bp->caps & MACB_CAPS_USRIO_HAS_CLKEN)
> - config |= MACB_BIT(CLKEN);
> + match = of_match_node(macb_dt_ids, np);
> + if (match)
> + macb_config = match->data;
> + }
> +
> + if (macb_config) {
> + bp->caps = macb_config->caps;
> + bp->dma_burst_length = macb_config->dma_burst_length;
> + init = macb_config->init;
> + }
>
> - macb_or_gem_writel(bp, USRIO, config);
> + /* IP specific init */
> + err = init(pdev);
> + if (err)
> + goto err_out_free_netdev;
>
> err = register_netdev(dev);
> if (err) {
> dev_err(&pdev->dev, "Cannot register net device, aborting.\n");
> - goto err_out_free_netdev;
> + goto err_disable_clocks;
> }
>
> err = macb_mii_init(bp);
> if (err)
> goto err_out_unregister_netdev;
>
> - platform_set_drvdata(pdev, dev);
> -
> netif_carrier_off(dev);
>
> netdev_info(dev, "Cadence %s rev 0x%08x at 0x%08lx irq %d (%pM)\n",
> @@ -2434,15 +2761,15 @@ static int macb_probe(struct platform_device *pdev)
>
> err_out_unregister_netdev:
> unregister_netdev(dev);
> +
> +err_disable_clocks:
> + clk_disable_unprepare(bp->tx_clk);
> + clk_disable_unprepare(bp->hclk);
> + clk_disable_unprepare(bp->pclk);
> +
> err_out_free_netdev:
> free_netdev(dev);
> -err_out_disable_clocks:
> - clk_disable_unprepare(tx_clk);
> -err_out_disable_hclk:
> - clk_disable_unprepare(hclk);
> -err_out_disable_pclk:
> - clk_disable_unprepare(pclk);
> -err_out:
> +
> return err;
> }
>
> diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
> index efe0247..113253b 100644
> --- a/drivers/net/ethernet/cadence/macb.h
> +++ b/drivers/net/ethernet/cadence/macb.h
> @@ -752,6 +752,7 @@ struct macb_or_gem_ops {
> struct macb_config {
> u32 caps;
> unsigned int dma_burst_length;
> + int (*init)(struct platform_device *pdev);
> };
>
> struct macb_queue {
> @@ -822,15 +823,6 @@ struct macb {
> u64 ethtool_stats[GEM_STATS_LEN];
> };
>
> -extern const struct ethtool_ops macb_ethtool_ops;
> -
> -int macb_mii_init(struct macb *bp);
> -int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
> -struct net_device_stats *macb_get_stats(struct net_device *dev);
> -void macb_set_rx_mode(struct net_device *dev);
> -void macb_set_hwaddr(struct macb *bp);
> -void macb_get_hwaddr(struct macb *bp);
> -
> static inline bool macb_is_gem(struct macb *bp)
> {
> return !!(bp->caps & MACB_CAPS_MACB_IS_GEM);
> --
> 1.9.1
>
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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