cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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emac_arc.c (1918B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/**
      3 * DOC: emac_arc.c - ARC EMAC specific glue layer
      4 *
      5 * Copyright (C) 2014 Romain Perier
      6 *
      7 * Romain Perier  <romain.perier@gmail.com>
      8 */
      9
     10#include <linux/etherdevice.h>
     11#include <linux/module.h>
     12#include <linux/of_net.h>
     13#include <linux/platform_device.h>
     14
     15#include "emac.h"
     16
     17#define DRV_NAME    "emac_arc"
     18
     19static int emac_arc_probe(struct platform_device *pdev)
     20{
     21	struct device *dev = &pdev->dev;
     22	struct arc_emac_priv *priv;
     23	phy_interface_t interface;
     24	struct net_device *ndev;
     25	int err;
     26
     27	if (!dev->of_node)
     28		return -ENODEV;
     29
     30	ndev = alloc_etherdev(sizeof(struct arc_emac_priv));
     31	if (!ndev)
     32		return -ENOMEM;
     33	platform_set_drvdata(pdev, ndev);
     34	SET_NETDEV_DEV(ndev, dev);
     35
     36	priv = netdev_priv(ndev);
     37	priv->drv_name = DRV_NAME;
     38
     39	err = of_get_phy_mode(dev->of_node, &interface);
     40	if (err) {
     41		if (err == -ENODEV)
     42			interface = PHY_INTERFACE_MODE_MII;
     43		else
     44			goto out_netdev;
     45	}
     46
     47	priv->clk = devm_clk_get(dev, "hclk");
     48	if (IS_ERR(priv->clk)) {
     49		dev_err(dev, "failed to retrieve host clock from device tree\n");
     50		err = -EINVAL;
     51		goto out_netdev;
     52	}
     53
     54	err = arc_emac_probe(ndev, interface);
     55out_netdev:
     56	if (err)
     57		free_netdev(ndev);
     58	return err;
     59}
     60
     61static int emac_arc_remove(struct platform_device *pdev)
     62{
     63	struct net_device *ndev = platform_get_drvdata(pdev);
     64	int err;
     65
     66	err = arc_emac_remove(ndev);
     67	free_netdev(ndev);
     68	return err;
     69}
     70
     71static const struct of_device_id emac_arc_dt_ids[] = {
     72	{ .compatible = "snps,arc-emac" },
     73	{ /* Sentinel */ }
     74};
     75MODULE_DEVICE_TABLE(of, emac_arc_dt_ids);
     76
     77static struct platform_driver emac_arc_driver = {
     78	.probe = emac_arc_probe,
     79	.remove = emac_arc_remove,
     80	.driver = {
     81		.name = DRV_NAME,
     82		.of_match_table  = emac_arc_dt_ids,
     83	},
     84};
     85
     86module_platform_driver(emac_arc_driver);
     87
     88MODULE_AUTHOR("Romain Perier <romain.perier@gmail.com>");
     89MODULE_DESCRIPTION("ARC EMAC platform driver");
     90MODULE_LICENSE("GPL");