dsa.c 19 KB
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/*
 * net/dsa/dsa.c - Hardware switch handling
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 * Copyright (c) 2008-2009 Marvell Semiconductor
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 * Copyright (c) 2013 Florian Fainelli <florian@openwrt.org>
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 *
 * 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.
 */

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#include <linux/ctype.h>
#include <linux/device.h>
#include <linux/hwmon.h>
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#include <linux/list.h>
#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <net/dsa.h>
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#include <linux/of.h>
#include <linux/of_mdio.h>
#include <linux/of_platform.h>
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#include <linux/sysfs.h>
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#include "dsa_priv.h"

char dsa_driver_version[] = "0.1";


/* switch driver registration ***********************************************/
static DEFINE_MUTEX(dsa_switch_drivers_mutex);
static LIST_HEAD(dsa_switch_drivers);

void register_switch_driver(struct dsa_switch_driver *drv)
{
	mutex_lock(&dsa_switch_drivers_mutex);
	list_add_tail(&drv->list, &dsa_switch_drivers);
	mutex_unlock(&dsa_switch_drivers_mutex);
}
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EXPORT_SYMBOL_GPL(register_switch_driver);
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void unregister_switch_driver(struct dsa_switch_driver *drv)
{
	mutex_lock(&dsa_switch_drivers_mutex);
	list_del_init(&drv->list);
	mutex_unlock(&dsa_switch_drivers_mutex);
}
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EXPORT_SYMBOL_GPL(unregister_switch_driver);
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static struct dsa_switch_driver *
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dsa_switch_probe(struct device *host_dev, int sw_addr, char **_name)
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{
	struct dsa_switch_driver *ret;
	struct list_head *list;
	char *name;

	ret = NULL;
	name = NULL;

	mutex_lock(&dsa_switch_drivers_mutex);
	list_for_each(list, &dsa_switch_drivers) {
		struct dsa_switch_driver *drv;

		drv = list_entry(list, struct dsa_switch_driver, list);

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		name = drv->probe(host_dev, sw_addr);
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		if (name != NULL) {
			ret = drv;
			break;
		}
	}
	mutex_unlock(&dsa_switch_drivers_mutex);

	*_name = name;

	return ret;
}

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/* hwmon support ************************************************************/

#ifdef CONFIG_NET_DSA_HWMON

static ssize_t temp1_input_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct dsa_switch *ds = dev_get_drvdata(dev);
	int temp, ret;

	ret = ds->drv->get_temp(ds, &temp);
	if (ret < 0)
		return ret;

	return sprintf(buf, "%d\n", temp * 1000);
}
static DEVICE_ATTR_RO(temp1_input);

static ssize_t temp1_max_show(struct device *dev,
			      struct device_attribute *attr, char *buf)
{
	struct dsa_switch *ds = dev_get_drvdata(dev);
	int temp, ret;

	ret = ds->drv->get_temp_limit(ds, &temp);
	if (ret < 0)
		return ret;

	return sprintf(buf, "%d\n", temp * 1000);
}

static ssize_t temp1_max_store(struct device *dev,
			       struct device_attribute *attr, const char *buf,
			       size_t count)
{
	struct dsa_switch *ds = dev_get_drvdata(dev);
	int temp, ret;

	ret = kstrtoint(buf, 0, &temp);
	if (ret < 0)
		return ret;

	ret = ds->drv->set_temp_limit(ds, DIV_ROUND_CLOSEST(temp, 1000));
	if (ret < 0)
		return ret;

	return count;
}
static DEVICE_ATTR(temp1_max, S_IRUGO, temp1_max_show, temp1_max_store);

static ssize_t temp1_max_alarm_show(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	struct dsa_switch *ds = dev_get_drvdata(dev);
	bool alarm;
	int ret;

	ret = ds->drv->get_temp_alarm(ds, &alarm);
	if (ret < 0)
		return ret;

	return sprintf(buf, "%d\n", alarm);
}
static DEVICE_ATTR_RO(temp1_max_alarm);

static struct attribute *dsa_hwmon_attrs[] = {
	&dev_attr_temp1_input.attr,	/* 0 */
	&dev_attr_temp1_max.attr,	/* 1 */
	&dev_attr_temp1_max_alarm.attr,	/* 2 */
	NULL
};

static umode_t dsa_hwmon_attrs_visible(struct kobject *kobj,
				       struct attribute *attr, int index)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct dsa_switch *ds = dev_get_drvdata(dev);
	struct dsa_switch_driver *drv = ds->drv;
	umode_t mode = attr->mode;

	if (index == 1) {
		if (!drv->get_temp_limit)
			mode = 0;
		else if (drv->set_temp_limit)
			mode |= S_IWUSR;
	} else if (index == 2 && !drv->get_temp_alarm) {
		mode = 0;
	}
	return mode;
}

static const struct attribute_group dsa_hwmon_group = {
	.attrs = dsa_hwmon_attrs,
	.is_visible = dsa_hwmon_attrs_visible,
};
__ATTRIBUTE_GROUPS(dsa_hwmon);

#endif /* CONFIG_NET_DSA_HWMON */
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/* basic switch operations **************************************************/
static struct dsa_switch *
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dsa_switch_setup(struct dsa_switch_tree *dst, int index,
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		 struct device *parent, struct device *host_dev)
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{
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	struct dsa_chip_data *pd = dst->pd->chip + index;
	struct dsa_switch_driver *drv;
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	struct dsa_switch *ds;
	int ret;
	char *name;
	int i;
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	bool valid_name_found = false;
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	/*
	 * Probe for switch model.
	 */
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	drv = dsa_switch_probe(host_dev, pd->sw_addr, &name);
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	if (drv == NULL) {
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		netdev_err(dst->master_netdev, "[%d]: could not detect attached switch\n",
			   index);
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		return ERR_PTR(-EINVAL);
	}
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	netdev_info(dst->master_netdev, "[%d]: detected a %s switch\n",
		    index, name);
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	/*
	 * Allocate and initialise switch state.
	 */
	ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL);
	if (ds == NULL)
		return ERR_PTR(-ENOMEM);

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	ds->dst = dst;
	ds->index = index;
	ds->pd = dst->pd->chip + index;
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	ds->drv = drv;
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	ds->master_dev = host_dev;
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	/*
	 * Validate supplied switch configuration.
	 */
	for (i = 0; i < DSA_MAX_PORTS; i++) {
		char *name;

		name = pd->port_names[i];
		if (name == NULL)
			continue;

		if (!strcmp(name, "cpu")) {
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			if (dst->cpu_switch != -1) {
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				netdev_err(dst->master_netdev,
					   "multiple cpu ports?!\n");
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				ret = -EINVAL;
				goto out;
			}
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			dst->cpu_switch = index;
			dst->cpu_port = i;
		} else if (!strcmp(name, "dsa")) {
			ds->dsa_port_mask |= 1 << i;
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		} else {
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			ds->phys_port_mask |= 1 << i;
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		}
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		valid_name_found = true;
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	}

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	if (!valid_name_found && i == DSA_MAX_PORTS) {
		ret = -EINVAL;
		goto out;
	}
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	/* Make the built-in MII bus mask match the number of ports,
	 * switch drivers can override this later
	 */
	ds->phys_mii_mask = ds->phys_port_mask;

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	/*
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	 * If the CPU connects to this switch, set the switch tree
	 * tagging protocol to the preferred tagging format of this
	 * switch.
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	 */
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	if (dst->cpu_switch == index) {
		switch (drv->tag_protocol) {
#ifdef CONFIG_NET_DSA_TAG_DSA
		case DSA_TAG_PROTO_DSA:
			dst->rcv = dsa_netdev_ops.rcv;
			break;
#endif
#ifdef CONFIG_NET_DSA_TAG_EDSA
		case DSA_TAG_PROTO_EDSA:
			dst->rcv = edsa_netdev_ops.rcv;
			break;
#endif
#ifdef CONFIG_NET_DSA_TAG_TRAILER
		case DSA_TAG_PROTO_TRAILER:
			dst->rcv = trailer_netdev_ops.rcv;
			break;
#endif
#ifdef CONFIG_NET_DSA_TAG_BRCM
		case DSA_TAG_PROTO_BRCM:
			dst->rcv = brcm_netdev_ops.rcv;
			break;
#endif
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		case DSA_TAG_PROTO_NONE:
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			break;
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		default:
			ret = -ENOPROTOOPT;
			goto out;
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		}
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		dst->tag_protocol = drv->tag_protocol;
	}
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	/*
	 * Do basic register setup.
	 */
	ret = drv->setup(ds);
	if (ret < 0)
		goto out;

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	ret = drv->set_addr(ds, dst->master_netdev->dev_addr);
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	if (ret < 0)
		goto out;

	ds->slave_mii_bus = mdiobus_alloc();
	if (ds->slave_mii_bus == NULL) {
		ret = -ENOMEM;
		goto out;
	}
	dsa_slave_mii_bus_init(ds);

	ret = mdiobus_register(ds->slave_mii_bus);
	if (ret < 0)
		goto out_free;


	/*
	 * Create network devices for physical switch ports.
	 */
	for (i = 0; i < DSA_MAX_PORTS; i++) {
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		if (!(ds->phys_port_mask & (1 << i)))
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			continue;

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		ret = dsa_slave_create(ds, parent, i, pd->port_names[i]);
		if (ret < 0) {
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			netdev_err(dst->master_netdev, "[%d]: can't create dsa slave device for port %d(%s)\n",
				   index, i, pd->port_names[i]);
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			ret = 0;
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		}
	}

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#ifdef CONFIG_NET_DSA_HWMON
	/* If the switch provides a temperature sensor,
	 * register with hardware monitoring subsystem.
	 * Treat registration error as non-fatal and ignore it.
	 */
	if (drv->get_temp) {
		const char *netname = netdev_name(dst->master_netdev);
		char hname[IFNAMSIZ + 1];
		int i, j;

		/* Create valid hwmon 'name' attribute */
		for (i = j = 0; i < IFNAMSIZ && netname[i]; i++) {
			if (isalnum(netname[i]))
				hname[j++] = netname[i];
		}
		hname[j] = '\0';
		scnprintf(ds->hwmon_name, sizeof(ds->hwmon_name), "%s_dsa%d",
			  hname, index);
		ds->hwmon_dev = hwmon_device_register_with_groups(NULL,
					ds->hwmon_name, ds, dsa_hwmon_groups);
		if (IS_ERR(ds->hwmon_dev))
			ds->hwmon_dev = NULL;
	}
#endif /* CONFIG_NET_DSA_HWMON */

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	return ds;

out_free:
	mdiobus_free(ds->slave_mii_bus);
out:
	kfree(ds);
	return ERR_PTR(ret);
}

static void dsa_switch_destroy(struct dsa_switch *ds)
{
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#ifdef CONFIG_NET_DSA_HWMON
	if (ds->hwmon_dev)
		hwmon_device_unregister(ds->hwmon_dev);
#endif
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}

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#ifdef CONFIG_PM_SLEEP
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static int dsa_switch_suspend(struct dsa_switch *ds)
{
	int i, ret = 0;

	/* Suspend slave network devices */
	for (i = 0; i < DSA_MAX_PORTS; i++) {
		if (!(ds->phys_port_mask & (1 << i)))
			continue;

		ret = dsa_slave_suspend(ds->ports[i]);
		if (ret)
			return ret;
	}

	if (ds->drv->suspend)
		ret = ds->drv->suspend(ds);

	return ret;
}

static int dsa_switch_resume(struct dsa_switch *ds)
{
	int i, ret = 0;

	if (ds->drv->resume)
		ret = ds->drv->resume(ds);

	if (ret)
		return ret;

	/* Resume slave network devices */
	for (i = 0; i < DSA_MAX_PORTS; i++) {
		if (!(ds->phys_port_mask & (1 << i)))
			continue;

		ret = dsa_slave_resume(ds->ports[i]);
		if (ret)
			return ret;
	}

	return 0;
}
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#endif
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/* link polling *************************************************************/
static void dsa_link_poll_work(struct work_struct *ugly)
{
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	struct dsa_switch_tree *dst;
	int i;

	dst = container_of(ugly, struct dsa_switch_tree, link_poll_work);
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	for (i = 0; i < dst->pd->nr_chips; i++) {
		struct dsa_switch *ds = dst->ds[i];
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		if (ds != NULL && ds->drv->poll_link != NULL)
			ds->drv->poll_link(ds);
	}

	mod_timer(&dst->link_poll_timer, round_jiffies(jiffies + HZ));
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}

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static void dsa_link_poll_timer(unsigned long _dst)
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{
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	struct dsa_switch_tree *dst = (void *)_dst;
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	schedule_work(&dst->link_poll_work);
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}


/* platform driver init and cleanup *****************************************/
static int dev_is_class(struct device *dev, void *class)
{
	if (dev->class != NULL && !strcmp(dev->class->name, class))
		return 1;

	return 0;
}

static struct device *dev_find_class(struct device *parent, char *class)
{
	if (dev_is_class(parent, class)) {
		get_device(parent);
		return parent;
	}

	return device_find_child(parent, class, dev_is_class);
}

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struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
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{
	struct device *d;

	d = dev_find_class(dev, "mdio_bus");
	if (d != NULL) {
		struct mii_bus *bus;

		bus = to_mii_bus(d);
		put_device(d);

		return bus;
	}

	return NULL;
}
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EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus);
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static struct net_device *dev_to_net_device(struct device *dev)
{
	struct device *d;

	d = dev_find_class(dev, "net");
	if (d != NULL) {
		struct net_device *nd;

		nd = to_net_dev(d);
		dev_hold(nd);
		put_device(d);

		return nd;
	}

	return NULL;
}

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#ifdef CONFIG_OF
static int dsa_of_setup_routing_table(struct dsa_platform_data *pd,
					struct dsa_chip_data *cd,
					int chip_index,
					struct device_node *link)
{
	int ret;
	const __be32 *reg;
	int link_port_addr;
	int link_sw_addr;
	struct device_node *parent_sw;
	int len;

	parent_sw = of_get_parent(link);
	if (!parent_sw)
		return -EINVAL;

	reg = of_get_property(parent_sw, "reg", &len);
	if (!reg || (len != sizeof(*reg) * 2))
		return -EINVAL;

	link_sw_addr = be32_to_cpup(reg + 1);

	if (link_sw_addr >= pd->nr_chips)
		return -EINVAL;

	/* First time routing table allocation */
	if (!cd->rtable) {
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		cd->rtable = kmalloc_array(pd->nr_chips, sizeof(s8),
					   GFP_KERNEL);
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		if (!cd->rtable)
			return -ENOMEM;

		/* default to no valid uplink/downlink */
		memset(cd->rtable, -1, pd->nr_chips * sizeof(s8));
	}

	reg = of_get_property(link, "reg", NULL);
	if (!reg) {
		ret = -EINVAL;
		goto out;
	}

	link_port_addr = be32_to_cpup(reg);

	cd->rtable[link_sw_addr] = link_port_addr;

	return 0;
out:
	kfree(cd->rtable);
	return ret;
}

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static void dsa_of_free_platform_data(struct dsa_platform_data *pd)
{
	int i;
	int port_index;

	for (i = 0; i < pd->nr_chips; i++) {
		port_index = 0;
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		while (port_index < DSA_MAX_PORTS) {
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			kfree(pd->chip[i].port_names[port_index]);
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			port_index++;
		}
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		kfree(pd->chip[i].rtable);
	}
	kfree(pd->chip);
}

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static int dsa_of_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct device_node *child, *mdio, *ethernet, *port, *link;
	struct mii_bus *mdio_bus;
	struct platform_device *ethernet_dev;
	struct dsa_platform_data *pd;
	struct dsa_chip_data *cd;
	const char *port_name;
	int chip_index, port_index;
	const unsigned int *sw_addr, *port_reg;
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	u32 eeprom_len;
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	int ret;
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	mdio = of_parse_phandle(np, "dsa,mii-bus", 0);
	if (!mdio)
		return -EINVAL;

	mdio_bus = of_mdio_find_bus(mdio);
	if (!mdio_bus)
		return -EINVAL;

	ethernet = of_parse_phandle(np, "dsa,ethernet", 0);
	if (!ethernet)
		return -EINVAL;

	ethernet_dev = of_find_device_by_node(ethernet);
	if (!ethernet_dev)
		return -ENODEV;

	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
	if (!pd)
		return -ENOMEM;

	pdev->dev.platform_data = pd;
	pd->netdev = &ethernet_dev->dev;
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	pd->nr_chips = of_get_available_child_count(np);
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	if (pd->nr_chips > DSA_MAX_SWITCHES)
		pd->nr_chips = DSA_MAX_SWITCHES;

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	pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data),
			   GFP_KERNEL);
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	if (!pd->chip) {
		ret = -ENOMEM;
		goto out_free;
	}

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	chip_index = -1;
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	for_each_available_child_of_node(np, child) {
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		chip_index++;
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		cd = &pd->chip[chip_index];

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		cd->of_node = child;
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		cd->host_dev = &mdio_bus->dev;
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		sw_addr = of_get_property(child, "reg", NULL);
		if (!sw_addr)
			continue;

		cd->sw_addr = be32_to_cpup(sw_addr);
		if (cd->sw_addr > PHY_MAX_ADDR)
			continue;

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		if (!of_property_read_u32(np, "eeprom-length", &eeprom_len))
			cd->eeprom_len = eeprom_len;

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		for_each_available_child_of_node(child, port) {
			port_reg = of_get_property(port, "reg", NULL);
			if (!port_reg)
				continue;

			port_index = be32_to_cpup(port_reg);

			port_name = of_get_property(port, "label", NULL);
			if (!port_name)
				continue;

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			cd->port_dn[port_index] = port;

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			cd->port_names[port_index] = kstrdup(port_name,
					GFP_KERNEL);
			if (!cd->port_names[port_index]) {
				ret = -ENOMEM;
				goto out_free_chip;
			}

			link = of_parse_phandle(port, "link", 0);

			if (!strcmp(port_name, "dsa") && link &&
					pd->nr_chips > 1) {
				ret = dsa_of_setup_routing_table(pd, cd,
						chip_index, link);
				if (ret)
					goto out_free_chip;
			}

			if (port_index == DSA_MAX_PORTS)
				break;
		}
	}

	return 0;

out_free_chip:
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	dsa_of_free_platform_data(pd);
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out_free:
	kfree(pd);
	pdev->dev.platform_data = NULL;
	return ret;
}

static void dsa_of_remove(struct platform_device *pdev)
{
	struct dsa_platform_data *pd = pdev->dev.platform_data;

	if (!pdev->dev.of_node)
		return;

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	dsa_of_free_platform_data(pd);
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	kfree(pd);
}
#else
static inline int dsa_of_probe(struct platform_device *pdev)
{
	return 0;
}

static inline void dsa_of_remove(struct platform_device *pdev)
{
}
#endif

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static int dsa_probe(struct platform_device *pdev)
{
	struct dsa_platform_data *pd = pdev->dev.platform_data;
	struct net_device *dev;
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	struct dsa_switch_tree *dst;
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	int i, ret;
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	pr_notice_once("Distributed Switch Architecture driver version %s\n",
		       dsa_driver_version);
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	if (pdev->dev.of_node) {
		ret = dsa_of_probe(pdev);
		if (ret)
			return ret;

		pd = pdev->dev.platform_data;
	}

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	if (pd == NULL || pd->netdev == NULL)
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		return -EINVAL;

	dev = dev_to_net_device(pd->netdev);
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	if (dev == NULL) {
		ret = -EINVAL;
		goto out;
	}
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	if (dev->dsa_ptr != NULL) {
		dev_put(dev);
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		ret = -EEXIST;
		goto out;
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	}

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	dst = kzalloc(sizeof(*dst), GFP_KERNEL);
	if (dst == NULL) {
733
		dev_put(dev);
734 735
		ret = -ENOMEM;
		goto out;
736 737
	}

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	platform_set_drvdata(pdev, dst);

	dst->pd = pd;
	dst->master_netdev = dev;
	dst->cpu_switch = -1;
	dst->cpu_port = -1;

	for (i = 0; i < pd->nr_chips; i++) {
		struct dsa_switch *ds;

748
		ds = dsa_switch_setup(dst, i, &pdev->dev, pd->chip[i].host_dev);
749
		if (IS_ERR(ds)) {
750 751
			netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
				   i, PTR_ERR(ds));
752 753 754 755 756 757
			continue;
		}

		dst->ds[i] = ds;
		if (ds->drv->poll_link != NULL)
			dst->link_poll_needed = 1;
758 759
	}

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	/*
	 * If we use a tagging format that doesn't have an ethertype
	 * field, make sure that all packets from this point on get
	 * sent to the tag format's receive function.
	 */
	wmb();
	dev->dsa_ptr = (void *)dst;

	if (dst->link_poll_needed) {
		INIT_WORK(&dst->link_poll_work, dsa_link_poll_work);
		init_timer(&dst->link_poll_timer);
		dst->link_poll_timer.data = (unsigned long)dst;
		dst->link_poll_timer.function = dsa_link_poll_timer;
		dst->link_poll_timer.expires = round_jiffies(jiffies + HZ);
		add_timer(&dst->link_poll_timer);
	}
776 777

	return 0;
778 779 780 781 782

out:
	dsa_of_remove(pdev);

	return ret;
783 784 785 786
}

static int dsa_remove(struct platform_device *pdev)
{
787 788
	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
	int i;
789

790 791
	if (dst->link_poll_needed)
		del_timer_sync(&dst->link_poll_timer);
792

793
	flush_work(&dst->link_poll_work);
794

795 796 797 798 799 800
	for (i = 0; i < dst->pd->nr_chips; i++) {
		struct dsa_switch *ds = dst->ds[i];

		if (ds != NULL)
			dsa_switch_destroy(ds);
	}
801

802 803
	dsa_of_remove(pdev);

804 805 806 807 808 809 810
	return 0;
}

static void dsa_shutdown(struct platform_device *pdev)
{
}

811 812 813 814 815 816 817 818 819 820
static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
			  struct packet_type *pt, struct net_device *orig_dev)
{
	struct dsa_switch_tree *dst = dev->dsa_ptr;

	if (unlikely(dst == NULL)) {
		kfree_skb(skb);
		return 0;
	}

821
	return dst->rcv(skb, dev, pt, orig_dev);
822 823
}

824
static struct packet_type dsa_pack_type __read_mostly = {
825 826 827 828
	.type	= cpu_to_be16(ETH_P_XDSA),
	.func	= dsa_switch_rcv,
};

829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864
#ifdef CONFIG_PM_SLEEP
static int dsa_suspend(struct device *d)
{
	struct platform_device *pdev = to_platform_device(d);
	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
	int i, ret = 0;

	for (i = 0; i < dst->pd->nr_chips; i++) {
		struct dsa_switch *ds = dst->ds[i];

		if (ds != NULL)
			ret = dsa_switch_suspend(ds);
	}

	return ret;
}

static int dsa_resume(struct device *d)
{
	struct platform_device *pdev = to_platform_device(d);
	struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
	int i, ret = 0;

	for (i = 0; i < dst->pd->nr_chips; i++) {
		struct dsa_switch *ds = dst->ds[i];

		if (ds != NULL)
			ret = dsa_switch_resume(ds);
	}

	return ret;
}
#endif

static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);

865
static const struct of_device_id dsa_of_match_table[] = {
866
	{ .compatible = "brcm,bcm7445-switch-v4.0" },
867 868 869 870 871
	{ .compatible = "marvell,dsa", },
	{}
};
MODULE_DEVICE_TABLE(of, dsa_of_match_table);

872 873 874 875 876 877
static struct platform_driver dsa_driver = {
	.probe		= dsa_probe,
	.remove		= dsa_remove,
	.shutdown	= dsa_shutdown,
	.driver = {
		.name	= "dsa",
878
		.of_match_table = dsa_of_match_table,
879
		.pm	= &dsa_pm_ops,
880 881 882 883 884
	},
};

static int __init dsa_init_module(void)
{
885 886 887 888 889 890
	int rc;

	rc = platform_driver_register(&dsa_driver);
	if (rc)
		return rc;

891 892
	dev_add_pack(&dsa_pack_type);

893
	return 0;
894 895 896 897 898
}
module_init(dsa_init_module);

static void __exit dsa_cleanup_module(void)
{
899
	dev_remove_pack(&dsa_pack_type);
900 901 902 903
	platform_driver_unregister(&dsa_driver);
}
module_exit(dsa_cleanup_module);

904
MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
905 906 907
MODULE_DESCRIPTION("Driver for Distributed Switch Architecture switch chips");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:dsa");