drivers/net/ethernet/amd/xgbe/xgbe-platform.c - linux/kernel/git/gregkh/usb - Git at Google

 /*
  * AMD 10Gb Ethernet driver
  *
  * This file is available to you under your choice of the following two
  * licenses:
  *
  * License 1: GPLv2
  *
  * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  *
  * This file is free software; you may copy, redistribute 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.
  *
  * This file 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, see <http://www.gnu.org/licenses/>.
  *
  * This file incorporates work covered by the following copyright and
  * permission notice:
  *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
  *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
  *     Inc. unless otherwise expressly agreed to in writing between Synopsys
  *     and you.
  *
  *     The Software IS NOT an item of Licensed Software or Licensed Product
  *     under any End User Software License Agreement or Agreement for Licensed
  *     Product with Synopsys or any supplement thereto.  Permission is hereby
  *     granted, free of charge, to any person obtaining a copy of this software
  *     annotated with this license and the Software, to deal in the Software
  *     without restriction, including without limitation the rights to use,
  *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  *     of the Software, and to permit persons to whom the Software is furnished
  *     to do so, subject to the following conditions:
  *
  *     The above copyright notice and this permission notice shall be included
  *     in all copies or substantial portions of the Software.
  *
  *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
  *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
  *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  *     THE POSSIBILITY OF SUCH DAMAGE.
  *
  *
  * License 2: Modified BSD
  *
  * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
  *       notice, this list of conditions and the following disclaimer in the
  *       documentation and/or other materials provided with the distribution.
  *     * Neither the name of Advanced Micro Devices, Inc. nor the
  *       names of its contributors may be used to endorse or promote products
  *       derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * This file incorporates work covered by the following copyright and
  * permission notice:
  *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
  *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
  *     Inc. unless otherwise expressly agreed to in writing between Synopsys
  *     and you.
  *
  *     The Software IS NOT an item of Licensed Software or Licensed Product
  *     under any End User Software License Agreement or Agreement for Licensed
  *     Product with Synopsys or any supplement thereto.  Permission is hereby
  *     granted, free of charge, to any person obtaining a copy of this software
  *     annotated with this license and the Software, to deal in the Software
  *     without restriction, including without limitation the rights to use,
  *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  *     of the Software, and to permit persons to whom the Software is furnished
  *     to do so, subject to the following conditions:
  *
  *     The above copyright notice and this permission notice shall be included
  *     in all copies or substantial portions of the Software.
  *
  *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
  *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
  *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  *     THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_net.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
 #include <linux/of_device.h>
 #include <linux/clk.h>
 #include <linux/property.h>
 #include <linux/acpi.h>
 #include <linux/mdio.h>

 #include "xgbe.h"
 #include "xgbe-common.h"

 #ifdef CONFIG_ACPI
 static const struct acpi_device_id xgbe_acpi_match[];

 static struct xgbe_version_data *xgbe_acpi_vdata(struct xgbe_prv_data *pdata)
 {
 	const struct acpi_device_id *id;

 	id = acpi_match_device(xgbe_acpi_match, pdata->dev);

 	return id ? (struct xgbe_version_data *)id->driver_data : NULL;
 }

 static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
 {
 	struct device *dev = pdata->dev;
 	u32 property;
 	int ret;

 	/* Obtain the system clock setting */
 	ret = device_property_read_u32(dev, XGBE_ACPI_DMA_FREQ, &property);
 	if (ret) {
 		dev_err(dev, "unable to obtain %s property\n",
 			XGBE_ACPI_DMA_FREQ);
 		return ret;
 	}
 	pdata->sysclk_rate = property;

 	/* Obtain the PTP clock setting */
 	ret = device_property_read_u32(dev, XGBE_ACPI_PTP_FREQ, &property);
 	if (ret) {
 		dev_err(dev, "unable to obtain %s property\n",
 			XGBE_ACPI_PTP_FREQ);
 		return ret;
 	}
 	pdata->ptpclk_rate = property;

 	return 0;
 }
 #else   /* CONFIG_ACPI */
 static struct xgbe_version_data *xgbe_acpi_vdata(struct xgbe_prv_data *pdata)
 {
 	return NULL;
 }

 static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
 {
 	return -EINVAL;
 }
 #endif  /* CONFIG_ACPI */

 #ifdef CONFIG_OF
 static const struct of_device_id xgbe_of_match[];

 static struct xgbe_version_data *xgbe_of_vdata(struct xgbe_prv_data *pdata)
 {
 	const struct of_device_id *id;

 	id = of_match_device(xgbe_of_match, pdata->dev);

 	return id ? (struct xgbe_version_data *)id->data : NULL;
 }

 static int xgbe_of_support(struct xgbe_prv_data *pdata)
 {
 	struct device *dev = pdata->dev;

 	/* Obtain the system clock setting */
 	pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
 	if (IS_ERR(pdata->sysclk)) {
 		dev_err(dev, "dma devm_clk_get failed\n");
 		return PTR_ERR(pdata->sysclk);
 	}
 	pdata->sysclk_rate = clk_get_rate(pdata->sysclk);

 	/* Obtain the PTP clock setting */
 	pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
 	if (IS_ERR(pdata->ptpclk)) {
 		dev_err(dev, "ptp devm_clk_get failed\n");
 		return PTR_ERR(pdata->ptpclk);
 	}
 	pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk);

 	return 0;
 }

 static struct platform_device *xgbe_of_get_phy_pdev(struct xgbe_prv_data *pdata)
 {
 	struct device *dev = pdata->dev;
 	struct device_node *phy_node;
 	struct platform_device *phy_pdev;

 	phy_node = of_parse_phandle(dev->of_node, "phy-handle", 0);
 	if (phy_node) {
 		/* Old style device tree:
 		 *   The XGBE and PHY resources are separate
 		 */
 		phy_pdev = of_find_device_by_node(phy_node);
 		of_node_put(phy_node);
 	} else {
 		/* New style device tree:
 		 *   The XGBE and PHY resources are grouped together with
 		 *   the PHY resources listed last
 		 */
 		get_device(dev);
 		phy_pdev = pdata->platdev;
 	}

 	return phy_pdev;
 }
 #else   /* CONFIG_OF */
 static struct xgbe_version_data *xgbe_of_vdata(struct xgbe_prv_data *pdata)
 {
 	return NULL;
 }

 static int xgbe_of_support(struct xgbe_prv_data *pdata)
 {
 	return -EINVAL;
 }

 static struct platform_device *xgbe_of_get_phy_pdev(struct xgbe_prv_data *pdata)
 {
 	return NULL;
 }
 #endif  /* CONFIG_OF */

 static unsigned int xgbe_resource_count(struct platform_device *pdev,
 					unsigned int type)
 {
 	unsigned int count;
 	int i;

 	for (i = 0, count = 0; i < pdev->num_resources; i++) {
 		struct resource *res = &pdev->resource[i];

 		if (type == resource_type(res))
 			count++;
 	}

 	return count;
 }

 static struct platform_device *xgbe_get_phy_pdev(struct xgbe_prv_data *pdata)
 {
 	struct platform_device *phy_pdev;

 	if (pdata->use_acpi) {
 		get_device(pdata->dev);
 		phy_pdev = pdata->platdev;
 	} else {
 		phy_pdev = xgbe_of_get_phy_pdev(pdata);
 	}

 	return phy_pdev;
 }

 static struct xgbe_version_data *xgbe_get_vdata(struct xgbe_prv_data *pdata)
 {
 	return pdata->use_acpi ? xgbe_acpi_vdata(pdata)
 			       : xgbe_of_vdata(pdata);
 }

 static int xgbe_platform_probe(struct platform_device *pdev)
 {
 	struct xgbe_prv_data *pdata;
 	struct device *dev = &pdev->dev;
 	struct platform_device *phy_pdev;
 	const char *phy_mode;
 	unsigned int phy_memnum, phy_irqnum;
 	unsigned int dma_irqnum, dma_irqend;
 	enum dev_dma_attr attr;
 	int ret;

 	pdata = xgbe_alloc_pdata(dev);
 	if (IS_ERR(pdata)) {
 		ret = PTR_ERR(pdata);
 		goto err_alloc;
 	}

 	pdata->platdev = pdev;
 	pdata->adev = ACPI_COMPANION(dev);
 	platform_set_drvdata(pdev, pdata);

 	/* Check if we should use ACPI or DT */
 	pdata->use_acpi = dev->of_node ? 0 : 1;

 	/* Get the version data */
 	pdata->vdata = xgbe_get_vdata(pdata);

 	phy_pdev = xgbe_get_phy_pdev(pdata);
 	if (!phy_pdev) {
 		dev_err(dev, "unable to obtain phy device\n");
 		ret = -EINVAL;
 		goto err_phydev;
 	}
 	pdata->phy_platdev = phy_pdev;
 	pdata->phy_dev = &phy_pdev->dev;

 	if (pdev == phy_pdev) {
 		/* New style device tree or ACPI:
 		 *   The XGBE and PHY resources are grouped together with
 		 *   the PHY resources listed last
 		 */
 		phy_memnum = xgbe_resource_count(pdev, IORESOURCE_MEM) - 3;
 		phy_irqnum = platform_irq_count(pdev) - 1;
 		dma_irqnum = 1;
 		dma_irqend = phy_irqnum;
 	} else {
 		/* Old style device tree:
 		 *   The XGBE and PHY resources are separate
 		 */
 		phy_memnum = 0;
 		phy_irqnum = 0;
 		dma_irqnum = 1;
 		dma_irqend = platform_irq_count(pdev);
 	}

 	/* Obtain the mmio areas for the device */
 	pdata->xgmac_regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pdata->xgmac_regs)) {
 		dev_err(dev, "xgmac ioremap failed\n");
 		ret = PTR_ERR(pdata->xgmac_regs);
 		goto err_io;
 	}
 	if (netif_msg_probe(pdata))
 		dev_dbg(dev, "xgmac_regs = %p\n", pdata->xgmac_regs);

 	pdata->xpcs_regs = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(pdata->xpcs_regs)) {
 		dev_err(dev, "xpcs ioremap failed\n");
 		ret = PTR_ERR(pdata->xpcs_regs);
 		goto err_io;
 	}
 	if (netif_msg_probe(pdata))
 		dev_dbg(dev, "xpcs_regs  = %p\n", pdata->xpcs_regs);

 	pdata->rxtx_regs = devm_platform_ioremap_resource(phy_pdev,
 							  phy_memnum++);
 	if (IS_ERR(pdata->rxtx_regs)) {
 		dev_err(dev, "rxtx ioremap failed\n");
 		ret = PTR_ERR(pdata->rxtx_regs);
 		goto err_io;
 	}
 	if (netif_msg_probe(pdata))
 		dev_dbg(dev, "rxtx_regs  = %p\n", pdata->rxtx_regs);

 	pdata->sir0_regs = devm_platform_ioremap_resource(phy_pdev,
 							  phy_memnum++);
 	if (IS_ERR(pdata->sir0_regs)) {
 		dev_err(dev, "sir0 ioremap failed\n");
 		ret = PTR_ERR(pdata->sir0_regs);
 		goto err_io;
 	}
 	if (netif_msg_probe(pdata))
 		dev_dbg(dev, "sir0_regs  = %p\n", pdata->sir0_regs);

 	pdata->sir1_regs = devm_platform_ioremap_resource(phy_pdev,
 							  phy_memnum++);
 	if (IS_ERR(pdata->sir1_regs)) {
 		dev_err(dev, "sir1 ioremap failed\n");
 		ret = PTR_ERR(pdata->sir1_regs);
 		goto err_io;
 	}
 	if (netif_msg_probe(pdata))
 		dev_dbg(dev, "sir1_regs  = %p\n", pdata->sir1_regs);

 	/* Retrieve the MAC address */
 	ret = device_property_read_u8_array(dev, XGBE_MAC_ADDR_PROPERTY,
 					    pdata->mac_addr,
 					    sizeof(pdata->mac_addr));
 	if (ret || !is_valid_ether_addr(pdata->mac_addr)) {
 		dev_err(dev, "invalid %s property\n", XGBE_MAC_ADDR_PROPERTY);
 		if (!ret)
 			ret = -EINVAL;
 		goto err_io;
 	}

 	/* Retrieve the PHY mode - it must be "xgmii" */
 	ret = device_property_read_string(dev, XGBE_PHY_MODE_PROPERTY,
 					  &phy_mode);
 	if (ret || strcmp(phy_mode, phy_modes(PHY_INTERFACE_MODE_XGMII))) {
 		dev_err(dev, "invalid %s property\n", XGBE_PHY_MODE_PROPERTY);
 		if (!ret)
 			ret = -EINVAL;
 		goto err_io;
 	}
 	pdata->phy_mode = PHY_INTERFACE_MODE_XGMII;

 	/* Check for per channel interrupt support */
 	if (device_property_present(dev, XGBE_DMA_IRQS_PROPERTY)) {
 		pdata->per_channel_irq = 1;
 		pdata->channel_irq_mode = XGBE_IRQ_MODE_EDGE;
 	}

 	/* Obtain device settings unique to ACPI/OF */
 	if (pdata->use_acpi)
 		ret = xgbe_acpi_support(pdata);
 	else
 		ret = xgbe_of_support(pdata);
 	if (ret)
 		goto err_io;

 	/* Set the DMA coherency values */
 	attr = device_get_dma_attr(dev);
 	if (attr == DEV_DMA_NOT_SUPPORTED) {
 		dev_err(dev, "DMA is not supported");
 		ret = -ENODEV;
 		goto err_io;
 	}
 	pdata->coherent = (attr == DEV_DMA_COHERENT);
 	if (pdata->coherent) {
 		pdata->arcr = XGBE_DMA_OS_ARCR;
 		pdata->awcr = XGBE_DMA_OS_AWCR;
 	} else {
 		pdata->arcr = XGBE_DMA_SYS_ARCR;
 		pdata->awcr = XGBE_DMA_SYS_AWCR;
 	}

 	/* Set the maximum fifo amounts */
 	pdata->tx_max_fifo_size = pdata->vdata->tx_max_fifo_size;
 	pdata->rx_max_fifo_size = pdata->vdata->rx_max_fifo_size;

 	/* Set the hardware channel and queue counts */
 	xgbe_set_counts(pdata);

 	/* Always have XGMAC and XPCS (auto-negotiation) interrupts */
 	pdata->irq_count = 2;

 	/* Get the device interrupt */
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
 		goto err_io;
 	pdata->dev_irq = ret;

 	/* Get the per channel DMA interrupts */
 	if (pdata->per_channel_irq) {
 		unsigned int i, max = ARRAY_SIZE(pdata->channel_irq);

 		for (i = 0; (i < max) && (dma_irqnum < dma_irqend); i++) {
 			ret = platform_get_irq(pdata->platdev, dma_irqnum++);
 			if (ret < 0)
 				goto err_io;

 			pdata->channel_irq[i] = ret;
 		}

 		pdata->channel_irq_count = max;

 		pdata->irq_count += max;
 	}

 	/* Get the auto-negotiation interrupt */
 	ret = platform_get_irq(phy_pdev, phy_irqnum++);
 	if (ret < 0)
 		goto err_io;
 	pdata->an_irq = ret;

 	/* Configure the netdev resource */
 	ret = xgbe_config_netdev(pdata);
 	if (ret)
 		goto err_io;

 	netdev_notice(pdata->netdev, "net device enabled\n");

 	return 0;

 err_io:
 	platform_device_put(phy_pdev);

 err_phydev:
 	xgbe_free_pdata(pdata);

 err_alloc:
 	dev_notice(dev, "net device not enabled\n");

 	return ret;
 }

 static int xgbe_platform_remove(struct platform_device *pdev)
 {
 	struct xgbe_prv_data *pdata = platform_get_drvdata(pdev);

 	xgbe_deconfig_netdev(pdata);

 	platform_device_put(pdata->phy_platdev);

 	xgbe_free_pdata(pdata);

 	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
 static int xgbe_platform_suspend(struct device *dev)
 {
 	struct xgbe_prv_data *pdata = dev_get_drvdata(dev);
 	struct net_device *netdev = pdata->netdev;
 	int ret = 0;

 	DBGPR("-->xgbe_suspend\n");

 	if (netif_running(netdev))
 		ret = xgbe_powerdown(netdev, XGMAC_DRIVER_CONTEXT);

 	pdata->lpm_ctrl = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
 	pdata->lpm_ctrl |= MDIO_CTRL1_LPOWER;
 	XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, pdata->lpm_ctrl);

 	DBGPR("<--xgbe_suspend\n");

 	return ret;
 }

 static int xgbe_platform_resume(struct device *dev)
 {
 	struct xgbe_prv_data *pdata = dev_get_drvdata(dev);
 	struct net_device *netdev = pdata->netdev;
 	int ret = 0;

 	DBGPR("-->xgbe_resume\n");

 	pdata->lpm_ctrl &= ~MDIO_CTRL1_LPOWER;
 	XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, pdata->lpm_ctrl);

 	if (netif_running(netdev)) {
 		ret = xgbe_powerup(netdev, XGMAC_DRIVER_CONTEXT);

 		/* Schedule a restart in case the link or phy state changed
 		 * while we were powered down.
 		 */
 		schedule_work(&pdata->restart_work);
 	}

 	DBGPR("<--xgbe_resume\n");

 	return ret;
 }
 #endif /* CONFIG_PM_SLEEP */

 static const struct xgbe_version_data xgbe_v1 = {
 	.init_function_ptrs_phy_impl	= xgbe_init_function_ptrs_phy_v1,
 	.xpcs_access			= XGBE_XPCS_ACCESS_V1,
 	.tx_max_fifo_size		= 81920,
 	.rx_max_fifo_size		= 81920,
 	.tx_tstamp_workaround		= 1,
 };

 #ifdef CONFIG_ACPI
 static const struct acpi_device_id xgbe_acpi_match[] = {
 	{ .id = "AMDI8001",
 	  .driver_data = (kernel_ulong_t)&xgbe_v1 },
 	{},
 };

 MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match);
 #endif

 #ifdef CONFIG_OF
 static const struct of_device_id xgbe_of_match[] = {
 	{ .compatible = "amd,xgbe-seattle-v1a",
 	  .data = &xgbe_v1 },
 	{},
 };

 MODULE_DEVICE_TABLE(of, xgbe_of_match);
 #endif

 static SIMPLE_DEV_PM_OPS(xgbe_platform_pm_ops,
 			 xgbe_platform_suspend, xgbe_platform_resume);

 static struct platform_driver xgbe_driver = {
 	.driver = {
 		.name = XGBE_DRV_NAME,
 #ifdef CONFIG_ACPI
 		.acpi_match_table = xgbe_acpi_match,
 #endif
 #ifdef CONFIG_OF
 		.of_match_table = xgbe_of_match,
 #endif
 		.pm = &xgbe_platform_pm_ops,
 	},
 	.probe = xgbe_platform_probe,
 	.remove = xgbe_platform_remove,
 };

 int xgbe_platform_init(void)
 {
 	return platform_driver_register(&xgbe_driver);
 }

 void xgbe_platform_exit(void)
 {
 	platform_driver_unregister(&xgbe_driver);
 }
	/*
	* AMD 10Gb Ethernet driver
	*
	* This file is available to you under your choice of the following two
	* licenses:
	*
	* License 1: GPLv2
	*
	* Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
	*
	* This file is free software; you may copy, redistribute 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.
	*
	* This file 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, see <http://www.gnu.org/licenses/>.
	*
	* This file incorporates work covered by the following copyright and
	* permission notice:
	* The Synopsys DWC ETHER XGMAC Software Driver and documentation
	* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
	* Inc. unless otherwise expressly agreed to in writing between Synopsys
	* and you.
	*
	* The Software IS NOT an item of Licensed Software or Licensed Product
	* under any End User Software License Agreement or Agreement for Licensed
	* Product with Synopsys or any supplement thereto. Permission is hereby
	* granted, free of charge, to any person obtaining a copy of this software
	* annotated with this license and the Software, to deal in the Software
	* without restriction, including without limitation the rights to use,
	* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
	* of the Software, and to permit persons to whom the Software is furnished
	* to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included
	* in all copies or substantial portions of the Software.
	*
	* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
	* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
	* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*
	*
	* License 2: Modified BSD
	*
	* Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* * Neither the name of Advanced Micro Devices, Inc. nor the
	* names of its contributors may be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* This file incorporates work covered by the following copyright and
	* permission notice:
	* The Synopsys DWC ETHER XGMAC Software Driver and documentation
	* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
	* Inc. unless otherwise expressly agreed to in writing between Synopsys
	* and you.
	*
	* The Software IS NOT an item of Licensed Software or Licensed Product
	* under any End User Software License Agreement or Agreement for Licensed
	* Product with Synopsys or any supplement thereto. Permission is hereby
	* granted, free of charge, to any person obtaining a copy of this software
	* annotated with this license and the Software, to deal in the Software
	* without restriction, including without limitation the rights to use,
	* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
	* of the Software, and to permit persons to whom the Software is furnished
	* to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included
	* in all copies or substantial portions of the Software.
	*
	* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
	* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
	* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include <linux/module.h>
	#include <linux/device.h>
	#include <linux/platform_device.h>
	#include <linux/spinlock.h>
	#include <linux/netdevice.h>
	#include <linux/etherdevice.h>
	#include <linux/io.h>
	#include <linux/of.h>
	#include <linux/of_net.h>
	#include <linux/of_address.h>
	#include <linux/of_platform.h>
	#include <linux/of_device.h>
	#include <linux/clk.h>
	#include <linux/property.h>
	#include <linux/acpi.h>
	#include <linux/mdio.h>

	#include "xgbe.h"
	#include "xgbe-common.h"

	#ifdef CONFIG_ACPI
	static const struct acpi_device_id xgbe_acpi_match[];

	static struct xgbe_version_data xgbe_acpi_vdata(struct xgbe_prv_data pdata)
	{
	const struct acpi_device_id *id;

	id = acpi_match_device(xgbe_acpi_match, pdata->dev);

	return id ? (struct xgbe_version_data *)id->driver_data : NULL;
	}

	static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
	{
	struct device *dev = pdata->dev;
	u32 property;
	int ret;

	/* Obtain the system clock setting */
	ret = device_property_read_u32(dev, XGBE_ACPI_DMA_FREQ, &property);
	if (ret) {
	dev_err(dev, "unable to obtain %s property\n",
	XGBE_ACPI_DMA_FREQ);
	return ret;
	}
	pdata->sysclk_rate = property;

	/* Obtain the PTP clock setting */
	ret = device_property_read_u32(dev, XGBE_ACPI_PTP_FREQ, &property);
	if (ret) {
	dev_err(dev, "unable to obtain %s property\n",
	XGBE_ACPI_PTP_FREQ);
	return ret;
	}
	pdata->ptpclk_rate = property;

	return 0;
	}
	#else /* CONFIG_ACPI */
	static struct xgbe_version_data xgbe_acpi_vdata(struct xgbe_prv_data pdata)
	{
	return NULL;
	}

	static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
	{
	return -EINVAL;
	}
	#endif /* CONFIG_ACPI */

	#ifdef CONFIG_OF
	static const struct of_device_id xgbe_of_match[];

	static struct xgbe_version_data xgbe_of_vdata(struct xgbe_prv_data pdata)
	{
	const struct of_device_id *id;

	id = of_match_device(xgbe_of_match, pdata->dev);

	return id ? (struct xgbe_version_data *)id->data : NULL;
	}

	static int xgbe_of_support(struct xgbe_prv_data *pdata)
	{
	struct device *dev = pdata->dev;

	/* Obtain the system clock setting */
	pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
	if (IS_ERR(pdata->sysclk)) {
	dev_err(dev, "dma devm_clk_get failed\n");
	return PTR_ERR(pdata->sysclk);
	}
	pdata->sysclk_rate = clk_get_rate(pdata->sysclk);

	/* Obtain the PTP clock setting */
	pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
	if (IS_ERR(pdata->ptpclk)) {
	dev_err(dev, "ptp devm_clk_get failed\n");
	return PTR_ERR(pdata->ptpclk);
	}
	pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk);

	return 0;
	}

	static struct platform_device xgbe_of_get_phy_pdev(struct xgbe_prv_data pdata)
	{
	struct device *dev = pdata->dev;
	struct device_node *phy_node;
	struct platform_device *phy_pdev;

	phy_node = of_parse_phandle(dev->of_node, "phy-handle", 0);
	if (phy_node) {
	/* Old style device tree:
	* The XGBE and PHY resources are separate
	*/
	phy_pdev = of_find_device_by_node(phy_node);
	of_node_put(phy_node);
	} else {
	/* New style device tree:
	* The XGBE and PHY resources are grouped together with
	* the PHY resources listed last
	*/
	get_device(dev);
	phy_pdev = pdata->platdev;
	}

	return phy_pdev;
	}
	#else /* CONFIG_OF */
	static struct xgbe_version_data xgbe_of_vdata(struct xgbe_prv_data pdata)
	{
	return NULL;
	}

	static int xgbe_of_support(struct xgbe_prv_data *pdata)
	{
	return -EINVAL;
	}

	static struct platform_device xgbe_of_get_phy_pdev(struct xgbe_prv_data pdata)
	{
	return NULL;
	}
	#endif /* CONFIG_OF */

	static unsigned int xgbe_resource_count(struct platform_device *pdev,
	unsigned int type)
	{
	unsigned int count;
	int i;

	for (i = 0, count = 0; i < pdev->num_resources; i++) {
	struct resource *res = &pdev->resource[i];

	if (type == resource_type(res))
	count++;
	}

	return count;
	}

	static struct platform_device xgbe_get_phy_pdev(struct xgbe_prv_data pdata)
	{
	struct platform_device *phy_pdev;

	if (pdata->use_acpi) {
	get_device(pdata->dev);
	phy_pdev = pdata->platdev;
	} else {
	phy_pdev = xgbe_of_get_phy_pdev(pdata);
	}

	return phy_pdev;
	}

	static struct xgbe_version_data xgbe_get_vdata(struct xgbe_prv_data pdata)
	{
	return pdata->use_acpi ? xgbe_acpi_vdata(pdata)
	: xgbe_of_vdata(pdata);
	}

	static int xgbe_platform_probe(struct platform_device *pdev)
	{
	struct xgbe_prv_data *pdata;
	struct device *dev = &pdev->dev;
	struct platform_device *phy_pdev;
	const char *phy_mode;
	unsigned int phy_memnum, phy_irqnum;
	unsigned int dma_irqnum, dma_irqend;
	enum dev_dma_attr attr;
	int ret;

	pdata = xgbe_alloc_pdata(dev);
	if (IS_ERR(pdata)) {
	ret = PTR_ERR(pdata);
	goto err_alloc;
	}

	pdata->platdev = pdev;
	pdata->adev = ACPI_COMPANION(dev);
	platform_set_drvdata(pdev, pdata);

	/* Check if we should use ACPI or DT */
	pdata->use_acpi = dev->of_node ? 0 : 1;

	/* Get the version data */
	pdata->vdata = xgbe_get_vdata(pdata);

	phy_pdev = xgbe_get_phy_pdev(pdata);
	if (!phy_pdev) {
	dev_err(dev, "unable to obtain phy device\n");
	ret = -EINVAL;
	goto err_phydev;
	}
	pdata->phy_platdev = phy_pdev;
	pdata->phy_dev = &phy_pdev->dev;

	if (pdev == phy_pdev) {
	/* New style device tree or ACPI:
	* The XGBE and PHY resources are grouped together with
	* the PHY resources listed last
	*/
	phy_memnum = xgbe_resource_count(pdev, IORESOURCE_MEM) - 3;
	phy_irqnum = platform_irq_count(pdev) - 1;
	dma_irqnum = 1;
	dma_irqend = phy_irqnum;
	} else {
	/* Old style device tree:
	* The XGBE and PHY resources are separate
	*/
	phy_memnum = 0;
	phy_irqnum = 0;
	dma_irqnum = 1;
	dma_irqend = platform_irq_count(pdev);
	}

	/* Obtain the mmio areas for the device */
	pdata->xgmac_regs = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(pdata->xgmac_regs)) {
	dev_err(dev, "xgmac ioremap failed\n");
	ret = PTR_ERR(pdata->xgmac_regs);
	goto err_io;
	}
	if (netif_msg_probe(pdata))
	dev_dbg(dev, "xgmac_regs = %p\n", pdata->xgmac_regs);

	pdata->xpcs_regs = devm_platform_ioremap_resource(pdev, 1);
	if (IS_ERR(pdata->xpcs_regs)) {
	dev_err(dev, "xpcs ioremap failed\n");
	ret = PTR_ERR(pdata->xpcs_regs);
	goto err_io;
	}
	if (netif_msg_probe(pdata))
	dev_dbg(dev, "xpcs_regs = %p\n", pdata->xpcs_regs);

	pdata->rxtx_regs = devm_platform_ioremap_resource(phy_pdev,
	phy_memnum++);
	if (IS_ERR(pdata->rxtx_regs)) {
	dev_err(dev, "rxtx ioremap failed\n");
	ret = PTR_ERR(pdata->rxtx_regs);
	goto err_io;
	}
	if (netif_msg_probe(pdata))
	dev_dbg(dev, "rxtx_regs = %p\n", pdata->rxtx_regs);

	pdata->sir0_regs = devm_platform_ioremap_resource(phy_pdev,
	phy_memnum++);
	if (IS_ERR(pdata->sir0_regs)) {
	dev_err(dev, "sir0 ioremap failed\n");
	ret = PTR_ERR(pdata->sir0_regs);
	goto err_io;
	}
	if (netif_msg_probe(pdata))
	dev_dbg(dev, "sir0_regs = %p\n", pdata->sir0_regs);

	pdata->sir1_regs = devm_platform_ioremap_resource(phy_pdev,
	phy_memnum++);
	if (IS_ERR(pdata->sir1_regs)) {
	dev_err(dev, "sir1 ioremap failed\n");
	ret = PTR_ERR(pdata->sir1_regs);
	goto err_io;
	}
	if (netif_msg_probe(pdata))
	dev_dbg(dev, "sir1_regs = %p\n", pdata->sir1_regs);

	/* Retrieve the MAC address */
	ret = device_property_read_u8_array(dev, XGBE_MAC_ADDR_PROPERTY,
	pdata->mac_addr,
	sizeof(pdata->mac_addr));
	if (ret \|\| !is_valid_ether_addr(pdata->mac_addr)) {
	dev_err(dev, "invalid %s property\n", XGBE_MAC_ADDR_PROPERTY);
	if (!ret)
	ret = -EINVAL;
	goto err_io;
	}

	/* Retrieve the PHY mode - it must be "xgmii" */
	ret = device_property_read_string(dev, XGBE_PHY_MODE_PROPERTY,
	&phy_mode);
	if (ret \|\| strcmp(phy_mode, phy_modes(PHY_INTERFACE_MODE_XGMII))) {
	dev_err(dev, "invalid %s property\n", XGBE_PHY_MODE_PROPERTY);
	if (!ret)
	ret = -EINVAL;
	goto err_io;
	}
	pdata->phy_mode = PHY_INTERFACE_MODE_XGMII;

	/* Check for per channel interrupt support */
	if (device_property_present(dev, XGBE_DMA_IRQS_PROPERTY)) {
	pdata->per_channel_irq = 1;
	pdata->channel_irq_mode = XGBE_IRQ_MODE_EDGE;
	}

	/* Obtain device settings unique to ACPI/OF */
	if (pdata->use_acpi)
	ret = xgbe_acpi_support(pdata);
	else
	ret = xgbe_of_support(pdata);
	if (ret)
	goto err_io;

	/* Set the DMA coherency values */
	attr = device_get_dma_attr(dev);
	if (attr == DEV_DMA_NOT_SUPPORTED) {
	dev_err(dev, "DMA is not supported");
	ret = -ENODEV;
	goto err_io;
	}
	pdata->coherent = (attr == DEV_DMA_COHERENT);
	if (pdata->coherent) {
	pdata->arcr = XGBE_DMA_OS_ARCR;
	pdata->awcr = XGBE_DMA_OS_AWCR;
	} else {
	pdata->arcr = XGBE_DMA_SYS_ARCR;
	pdata->awcr = XGBE_DMA_SYS_AWCR;
	}

	/* Set the maximum fifo amounts */
	pdata->tx_max_fifo_size = pdata->vdata->tx_max_fifo_size;
	pdata->rx_max_fifo_size = pdata->vdata->rx_max_fifo_size;

	/* Set the hardware channel and queue counts */
	xgbe_set_counts(pdata);

	/* Always have XGMAC and XPCS (auto-negotiation) interrupts */
	pdata->irq_count = 2;

	/* Get the device interrupt */
	ret = platform_get_irq(pdev, 0);
	if (ret < 0)
	goto err_io;
	pdata->dev_irq = ret;

	/* Get the per channel DMA interrupts */
	if (pdata->per_channel_irq) {
	unsigned int i, max = ARRAY_SIZE(pdata->channel_irq);

	for (i = 0; (i < max) && (dma_irqnum < dma_irqend); i++) {
	ret = platform_get_irq(pdata->platdev, dma_irqnum++);
	if (ret < 0)
	goto err_io;

	pdata->channel_irq[i] = ret;
	}

	pdata->channel_irq_count = max;

	pdata->irq_count += max;
	}

	/* Get the auto-negotiation interrupt */
	ret = platform_get_irq(phy_pdev, phy_irqnum++);
	if (ret < 0)
	goto err_io;
	pdata->an_irq = ret;

	/* Configure the netdev resource */
	ret = xgbe_config_netdev(pdata);
	if (ret)
	goto err_io;

	netdev_notice(pdata->netdev, "net device enabled\n");

	return 0;

	err_io:
	platform_device_put(phy_pdev);

	err_phydev:
	xgbe_free_pdata(pdata);

	err_alloc:
	dev_notice(dev, "net device not enabled\n");

	return ret;
	}

	static int xgbe_platform_remove(struct platform_device *pdev)
	{
	struct xgbe_prv_data *pdata = platform_get_drvdata(pdev);

	xgbe_deconfig_netdev(pdata);

	platform_device_put(pdata->phy_platdev);

	xgbe_free_pdata(pdata);

	return 0;
	}

	#ifdef CONFIG_PM_SLEEP
	static int xgbe_platform_suspend(struct device *dev)
	{
	struct xgbe_prv_data *pdata = dev_get_drvdata(dev);
	struct net_device *netdev = pdata->netdev;
	int ret = 0;

	DBGPR("-->xgbe_suspend\n");

	if (netif_running(netdev))
	ret = xgbe_powerdown(netdev, XGMAC_DRIVER_CONTEXT);

	pdata->lpm_ctrl = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
	pdata->lpm_ctrl \|= MDIO_CTRL1_LPOWER;
	XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, pdata->lpm_ctrl);

	DBGPR("<--xgbe_suspend\n");

	return ret;
	}

	static int xgbe_platform_resume(struct device *dev)
	{
	struct xgbe_prv_data *pdata = dev_get_drvdata(dev);
	struct net_device *netdev = pdata->netdev;
	int ret = 0;

	DBGPR("-->xgbe_resume\n");

	pdata->lpm_ctrl &= ~MDIO_CTRL1_LPOWER;
	XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, pdata->lpm_ctrl);

	if (netif_running(netdev)) {
	ret = xgbe_powerup(netdev, XGMAC_DRIVER_CONTEXT);

	/* Schedule a restart in case the link or phy state changed
	* while we were powered down.
	*/
	schedule_work(&pdata->restart_work);
	}

	DBGPR("<--xgbe_resume\n");

	return ret;
	}
	#endif /* CONFIG_PM_SLEEP */

	static const struct xgbe_version_data xgbe_v1 = {
	.init_function_ptrs_phy_impl = xgbe_init_function_ptrs_phy_v1,
	.xpcs_access = XGBE_XPCS_ACCESS_V1,
	.tx_max_fifo_size = 81920,
	.rx_max_fifo_size = 81920,
	.tx_tstamp_workaround = 1,
	};

	#ifdef CONFIG_ACPI
	static const struct acpi_device_id xgbe_acpi_match[] = {
	{ .id = "AMDI8001",
	.driver_data = (kernel_ulong_t)&xgbe_v1 },
	{},
	};

	MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match);
	#endif

	#ifdef CONFIG_OF
	static const struct of_device_id xgbe_of_match[] = {
	{ .compatible = "amd,xgbe-seattle-v1a",
	.data = &xgbe_v1 },
	{},
	};

	MODULE_DEVICE_TABLE(of, xgbe_of_match);
	#endif

	static SIMPLE_DEV_PM_OPS(xgbe_platform_pm_ops,
	xgbe_platform_suspend, xgbe_platform_resume);

	static struct platform_driver xgbe_driver = {
	.driver = {
	.name = XGBE_DRV_NAME,
	#ifdef CONFIG_ACPI
	.acpi_match_table = xgbe_acpi_match,
	#endif
	#ifdef CONFIG_OF
	.of_match_table = xgbe_of_match,
	#endif
	.pm = &xgbe_platform_pm_ops,
	},
	.probe = xgbe_platform_probe,
	.remove = xgbe_platform_remove,
	};

	int xgbe_platform_init(void)
	{
	return platform_driver_register(&xgbe_driver);
	}

	void xgbe_platform_exit(void)
	{
	platform_driver_unregister(&xgbe_driver);
	}