1 files changed, 381 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c
new file mode 100644
index 0000000..994d38c
--- /dev/null
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_proxy.c
@@ -0,0 +1,381 @@
+/* Copyright 2008-2013 Freescale Semiconductor Inc.
+ *
+ * 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 Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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.
+ */
+
+#ifdef CONFIG_FSL_DPAA_ETH_DEBUG
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": %s:%hu:%s() " fmt, \
+	KBUILD_BASENAME".c", __LINE__, __func__
+#else
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": " fmt
+#endif
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include "dpaa_eth.h"
+#include "dpaa_eth_common.h"
+#include "dpaa_eth_base.h"
+#include "lnxwrp_fsl_fman.h" /* fm_get_rx_extra_headroom(), fm_get_max_frm() */
+#include "mac.h"
+
+#define DPA_DESCRIPTION "FSL DPAA Proxy initialization driver"
+
+MODULE_LICENSE("Dual BSD/GPL");
+
+MODULE_DESCRIPTION(DPA_DESCRIPTION);
+
+static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev);
+#ifdef CONFIG_PM
+
+static int proxy_suspend(struct device *dev)
+{
+	struct proxy_device *proxy_dev = dev_get_drvdata(dev);
+	struct mac_device *mac_dev = proxy_dev->mac_dev;
+	int err = 0;
+
+	err = fm_port_suspend(mac_dev->port_dev[RX]);
+	if (err)
+		goto port_suspend_failed;
+
+	err = fm_port_suspend(mac_dev->port_dev[TX]);
+	if (err)
+		err = fm_port_resume(mac_dev->port_dev[RX]);
+
+port_suspend_failed:
+	return err;
+}
+
+static int proxy_resume(struct device *dev)
+{
+	struct proxy_device *proxy_dev = dev_get_drvdata(dev);
+	struct mac_device	*mac_dev = proxy_dev->mac_dev;
+	int			err = 0;
+
+	err = fm_port_resume(mac_dev->port_dev[TX]);
+	if (err)
+		goto port_resume_failed;
+
+	err = fm_port_resume(mac_dev->port_dev[RX]);
+	if (err)
+		err = fm_port_suspend(mac_dev->port_dev[TX]);
+
+port_resume_failed:
+	return err;
+}
+
+static const struct dev_pm_ops proxy_pm_ops = {
+	.suspend = proxy_suspend,
+	.resume = proxy_resume,
+};
+
+#define PROXY_PM_OPS (&proxy_pm_ops)
+
+#else /* CONFIG_PM */
+
+#define PROXY_PM_OPS NULL
+
+#endif /* CONFIG_PM */
+
+static int dpaa_eth_proxy_probe(struct platform_device *_of_dev)
+{
+	int err = 0, i;
+	struct device *dev;
+	struct device_node *dpa_node;
+	struct dpa_bp *dpa_bp;
+	struct list_head proxy_fq_list;
+	size_t count;
+	struct fm_port_fqs port_fqs;
+	struct dpa_buffer_layout_s *buf_layout = NULL;
+	struct mac_device *mac_dev;
+	struct proxy_device *proxy_dev;
+
+	dev = &_of_dev->dev;
+
+	dpa_node = dev->of_node;
+
+	if (!of_device_is_available(dpa_node))
+		return -ENODEV;
+
+	/* Get the buffer pools assigned to this interface */
+	dpa_bp = dpa_bp_probe(_of_dev, &count);
+	if (IS_ERR(dpa_bp))
+		return PTR_ERR(dpa_bp);
+
+	mac_dev = dpa_mac_probe(_of_dev);
+	if (IS_ERR(mac_dev))
+		return PTR_ERR(mac_dev);
+
+	proxy_dev = devm_kzalloc(dev, sizeof(*proxy_dev), GFP_KERNEL);
+	if (!proxy_dev) {
+		dev_err(dev, "devm_kzalloc() failed\n");
+		return -ENOMEM;
+	}
+
+	proxy_dev->mac_dev = mac_dev;
+	dev_set_drvdata(dev, proxy_dev);
+
+	/* We have physical ports, so we need to establish
+	 * the buffer layout.
+	 */
+	buf_layout = devm_kzalloc(dev, 2 * sizeof(*buf_layout),
+				  GFP_KERNEL);
+	if (!buf_layout) {
+		dev_err(dev, "devm_kzalloc() failed\n");
+		return -ENOMEM;
+	}
+	dpa_set_buffers_layout(mac_dev, buf_layout);
+
+	INIT_LIST_HEAD(&proxy_fq_list);
+
+	memset(&port_fqs, 0, sizeof(port_fqs));
+
+	err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true, RX);
+	if (!err)
+		err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true,
+				       TX);
+	if (err < 0) {
+		devm_kfree(dev, buf_layout);
+		return err;
+	}
+
+	/* Proxy initializer - Just configures the MAC on behalf of
+	 * another partition.
+	 */
+	dpaa_eth_init_ports(mac_dev, dpa_bp, count, &port_fqs,
+			buf_layout, dev);
+
+	/* Proxy interfaces need to be started, and the allocated
+	 * memory freed
+	 */
+	devm_kfree(dev, buf_layout);
+	devm_kfree(dev, dpa_bp);
+
+	/* Free FQ structures */
+	devm_kfree(dev, port_fqs.rx_defq);
+	devm_kfree(dev, port_fqs.rx_errq);
+	devm_kfree(dev, port_fqs.tx_defq);
+	devm_kfree(dev, port_fqs.tx_errq);
+
+	for_each_port_device(i, mac_dev->port_dev) {
+		err = fm_port_enable(mac_dev->port_dev[i]);
+		if (err)
+			goto port_enable_fail;
+	}
+
+	dev_info(dev, "probed MAC device with MAC address: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
+		     mac_dev->addr[0], mac_dev->addr[1], mac_dev->addr[2],
+		     mac_dev->addr[3], mac_dev->addr[4], mac_dev->addr[5]);
+
+	return 0; /* Proxy interface initialization ended */
+
+port_enable_fail:
+	for_each_port_device(i, mac_dev->port_dev)
+		fm_port_disable(mac_dev->port_dev[i]);
+	dpa_eth_proxy_remove(_of_dev);
+
+	return err;
+}
+
+int dpa_proxy_set_mac_address(struct proxy_device *proxy_dev,
+			  struct net_device *net_dev)
+{
+	struct mac_device	*mac_dev;
+	int			 _errno;
+
+	mac_dev = proxy_dev->mac_dev;
+
+	_errno = mac_dev->change_addr(mac_dev->get_mac_handle(mac_dev),
+			net_dev->dev_addr);
+	if (_errno < 0)
+		return _errno;
+
+	return 0;
+}
+EXPORT_SYMBOL(dpa_proxy_set_mac_address);
+
+int dpa_proxy_set_rx_mode(struct proxy_device *proxy_dev,
+		       struct net_device *net_dev)
+{
+	struct mac_device *mac_dev = proxy_dev->mac_dev;
+	int _errno;
+
+	if (!!(net_dev->flags & IFF_PROMISC) != mac_dev->promisc) {
+		mac_dev->promisc = !mac_dev->promisc;
+		_errno = mac_dev->set_promisc(mac_dev->get_mac_handle(mac_dev),
+				mac_dev->promisc);
+		if (unlikely(_errno < 0))
+			netdev_err(net_dev, "mac_dev->set_promisc() = %d\n",
+					_errno);
+	}
+
+	_errno = mac_dev->set_multi(net_dev, mac_dev);
+	if (unlikely(_errno < 0))
+		return _errno;
+
+	return 0;
+}
+EXPORT_SYMBOL(dpa_proxy_set_rx_mode);
+
+int dpa_proxy_start(struct net_device *net_dev)
+{
+	struct mac_device	*mac_dev;
+	const struct dpa_priv_s	*priv;
+	struct proxy_device	*proxy_dev;
+	int			 _errno;
+	int			i;
+
+	priv = netdev_priv(net_dev);
+	proxy_dev = (struct proxy_device *)priv->peer;
+	mac_dev = proxy_dev->mac_dev;
+
+	_errno = mac_dev->init_phy(net_dev, mac_dev);
+	if (_errno < 0) {
+		if (netif_msg_drv(priv))
+			netdev_err(net_dev, "init_phy() = %d\n",
+					_errno);
+		return _errno;
+	}
+
+	for_each_port_device(i, mac_dev->port_dev) {
+		_errno = fm_port_enable(mac_dev->port_dev[i]);
+		if (_errno)
+			goto port_enable_fail;
+	}
+
+	_errno = mac_dev->start(mac_dev);
+	if (_errno < 0) {
+		if (netif_msg_drv(priv))
+			netdev_err(net_dev, "mac_dev->start() = %d\n",
+					_errno);
+		goto port_enable_fail;
+	}
+
+	return _errno;
+
+port_enable_fail:
+	for_each_port_device(i, mac_dev->port_dev)
+		fm_port_disable(mac_dev->port_dev[i]);
+
+	return _errno;
+}
+EXPORT_SYMBOL(dpa_proxy_start);
+
+int dpa_proxy_stop(struct proxy_device *proxy_dev, struct net_device *net_dev)
+{
+	struct mac_device *mac_dev = proxy_dev->mac_dev;
+	const struct dpa_priv_s	*priv = netdev_priv(net_dev);
+	int _errno, i, err;
+
+	_errno = mac_dev->stop(mac_dev);
+	if (_errno < 0) {
+		if (netif_msg_drv(priv))
+			netdev_err(net_dev, "mac_dev->stop() = %d\n",
+					_errno);
+		return _errno;
+	}
+
+	for_each_port_device(i, mac_dev->port_dev) {
+		err = fm_port_disable(mac_dev->port_dev[i]);
+		_errno = err ? err : _errno;
+	}
+
+	if (mac_dev->phy_dev)
+		phy_disconnect(mac_dev->phy_dev);
+	mac_dev->phy_dev = NULL;
+
+	return _errno;
+}
+EXPORT_SYMBOL(dpa_proxy_stop);
+
+static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev)
+{
+	struct device *dev = &of_dev->dev;
+	struct proxy_device *proxy_dev = dev_get_drvdata(dev);
+
+	kfree(proxy_dev);
+
+	dev_set_drvdata(dev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id dpa_proxy_match[] = {
+	{
+		.compatible	= "fsl,dpa-ethernet-init"
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, dpa_proxy_match);
+
+static struct platform_driver dpa_proxy_driver = {
+	.driver = {
+		.name		= KBUILD_MODNAME "-proxy",
+		.of_match_table	= dpa_proxy_match,
+		.owner		= THIS_MODULE,
+		.pm		= PROXY_PM_OPS,
+	},
+	.probe		= dpaa_eth_proxy_probe,
+	.remove		= dpa_eth_proxy_remove
+};
+
+static int __init __cold dpa_proxy_load(void)
+{
+	int	 _errno;
+
+	pr_info(DPA_DESCRIPTION "\n");
+
+	/* Initialize dpaa_eth mirror values */
+	dpa_rx_extra_headroom = fm_get_rx_extra_headroom();
+	dpa_max_frm = fm_get_max_frm();
+
+	_errno = platform_driver_register(&dpa_proxy_driver);
+	if (unlikely(_errno < 0)) {
+		pr_err(KBUILD_MODNAME
+			": %s:%hu:%s(): platform_driver_register() = %d\n",
+			KBUILD_BASENAME".c", __LINE__, __func__, _errno);
+	}
+
+	pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
+		KBUILD_BASENAME".c", __func__);
+
+	return _errno;
+}
+module_init(dpa_proxy_load);
+
+static void __exit __cold dpa_proxy_unload(void)
+{
+	platform_driver_unregister(&dpa_proxy_driver);
+
+	pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
+		KBUILD_BASENAME".c", __func__);
+}
+module_exit(dpa_proxy_unload);