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-rw-r--r--Documentation/devicetree/bindings/net/dsa/dsa.txt155
-rw-r--r--drivers/net/dsa/Kconfig2
-rw-r--r--drivers/net/dsa/mv88e6060.c85
-rw-r--r--include/net/dsa.h23
-rw-r--r--net/dsa/Kconfig9
-rw-r--r--net/dsa/Makefile1
-rw-r--r--net/dsa/dsa.c5
-rw-r--r--net/dsa/dsa_priv.h12
-rw-r--r--net/dsa/legacy.c747
9 files changed, 53 insertions, 986 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index d66a5292b9d3..c107d2848888 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -1,12 +1,6 @@
Distributed Switch Architecture Device Tree Bindings
----------------------------------------------------
-Two bindings exist, one of which has been deprecated due to
-limitations.
-
-Current Binding
----------------
-
Switches are true Linux devices and can be probed by any means. Once
probed, they register to the DSA framework, passing a node
pointer. This node is expected to fulfil the following binding, and
@@ -262,152 +256,3 @@ linked into one DSA cluster.
};
};
};
-
-Deprecated Binding
-------------------
-
-The deprecated binding makes use of a platform device to represent the
-switches. The switches themselves are not Linux devices, and make use
-of an MDIO bus for management.
-
-Required properties:
-- compatible : Should be "marvell,dsa"
-- #address-cells : Must be 2, first cell is the address on the MDIO bus
- and second cell is the address in the switch tree.
- Second cell is used only when cascading/chaining.
-- #size-cells : Must be 0
-- dsa,ethernet : Should be a phandle to a valid Ethernet device node
-- dsa,mii-bus : Should be a phandle to a valid MDIO bus device node
-
-Optional properties:
-- interrupts : property with a value describing the switch
- interrupt number (not supported by the driver)
-
-A DSA node can contain multiple switch chips which are therefore child nodes of
-the parent DSA node. The maximum number of allowed child nodes is 4
-(DSA_MAX_SWITCHES).
-Each of these switch child nodes should have the following required properties:
-
-- reg : Contains two fields. The first one describes the
- address on the MII bus. The second is the switch
- number that must be unique in cascaded configurations
-- #address-cells : Must be 1
-- #size-cells : Must be 0
-
-A switch child node has the following optional property:
-
-- eeprom-length : Set to the length of an EEPROM connected to the
- switch. Must be set if the switch can not detect
- the presence and/or size of a connected EEPROM,
- otherwise optional.
-
-A switch may have multiple "port" children nodes
-
-Each port children node must have the following mandatory properties:
-- reg : Describes the port address in the switch
-- label : Describes the label associated with this port, special
- labels are "cpu" to indicate a CPU port and "dsa" to
- indicate an uplink/downlink port.
-
-Note that a port labelled "dsa" will imply checking for the uplink phandle
-described below.
-
-Optional property:
-- link : Should be a list of phandles to another switch's DSA port.
- This property is only used when switches are being
- chained/cascaded together. This port is used as outgoing port
- towards the phandle port, which can be more than one hop away.
-
-- phy-handle : Phandle to a PHY on an external MDIO bus, not the
- switch internal one. See
- Documentation/devicetree/bindings/net/ethernet.txt
- for details.
-
-- phy-mode : String representing the connection to the designated
- PHY node specified by the 'phy-handle' property. See
- Documentation/devicetree/bindings/net/ethernet.txt
- for details.
-
-- mii-bus : Should be a phandle to a valid MDIO bus device node.
- This mii-bus will be used in preference to the
- global dsa,mii-bus defined above, for this switch.
-
-Optional subnodes:
-- fixed-link : Fixed-link subnode describing a link to a non-MDIO
- managed entity. See
- Documentation/devicetree/bindings/net/fixed-link.txt
- for details.
-
-Example:
-
- dsa@0 {
- compatible = "marvell,dsa";
- #address-cells = <2>;
- #size-cells = <0>;
-
- interrupts = <10>;
- dsa,ethernet = <&ethernet0>;
- dsa,mii-bus = <&mii_bus0>;
-
- switch@0 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <16 0>; /* MDIO address 16, switch 0 in tree */
-
- port@0 {
- reg = <0>;
- label = "lan1";
- phy-handle = <&phy0>;
- };
-
- port@1 {
- reg = <1>;
- label = "lan2";
- };
-
- port@5 {
- reg = <5>;
- label = "cpu";
- };
-
- switch0port6: port@6 {
- reg = <6>;
- label = "dsa";
- link = <&switch1port0
- &switch2port0>;
- };
- };
-
- switch@1 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <17 1>; /* MDIO address 17, switch 1 in tree */
- mii-bus = <&mii_bus1>;
- reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
-
- switch1port0: port@0 {
- reg = <0>;
- label = "dsa";
- link = <&switch0port6>;
- };
- switch1port1: port@1 {
- reg = <1>;
- label = "dsa";
- link = <&switch2port1>;
- };
- };
-
- switch@2 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <18 2>; /* MDIO address 18, switch 2 in tree */
- mii-bus = <&mii_bus1>;
-
- switch2port0: port@0 {
- reg = <0>;
- label = "dsa";
- link = <&switch1port1
- &switch0port6>;
- };
- };
- };
diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
index 71bb3aebded4..82560b710681 100644
--- a/drivers/net/dsa/Kconfig
+++ b/drivers/net/dsa/Kconfig
@@ -41,7 +41,7 @@ config NET_DSA_MT7530
config NET_DSA_MV88E6060
tristate "Marvell 88E6060 ethernet switch chip support"
- depends on NET_DSA && NET_DSA_LEGACY
+ depends on NET_DSA
select NET_DSA_TAG_TRAILER
---help---
This enables support for the Marvell 88E6060 ethernet switch
diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
index 4ca06b3b9d4f..2a2489b5196d 100644
--- a/drivers/net/dsa/mv88e6060.c
+++ b/drivers/net/dsa/mv88e6060.c
@@ -48,27 +48,6 @@ static enum dsa_tag_protocol mv88e6060_get_tag_protocol(struct dsa_switch *ds,
return DSA_TAG_PROTO_TRAILER;
}
-static const char *mv88e6060_drv_probe(struct device *dsa_dev,
- struct device *host_dev, int sw_addr,
- void **_priv)
-{
- struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
- struct mv88e6060_priv *priv;
- const char *name;
-
- name = mv88e6060_get_name(bus, sw_addr);
- if (name) {
- priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return NULL;
- *_priv = priv;
- priv->bus = bus;
- priv->sw_addr = sw_addr;
- }
-
- return name;
-}
-
static int mv88e6060_switch_reset(struct mv88e6060_priv *priv)
{
int i;
@@ -266,28 +245,68 @@ mv88e6060_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
static const struct dsa_switch_ops mv88e6060_switch_ops = {
.get_tag_protocol = mv88e6060_get_tag_protocol,
- .probe = mv88e6060_drv_probe,
.setup = mv88e6060_setup,
.phy_read = mv88e6060_phy_read,
.phy_write = mv88e6060_phy_write,
};
-static struct dsa_switch_driver mv88e6060_switch_drv = {
- .ops = &mv88e6060_switch_ops,
-};
-
-static int __init mv88e6060_init(void)
+static int mv88e6060_probe(struct mdio_device *mdiodev)
{
- register_switch_driver(&mv88e6060_switch_drv);
- return 0;
+ struct device *dev = &mdiodev->dev;
+ struct mv88e6060_priv *priv;
+ struct dsa_switch *ds;
+ const char *name;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->bus = mdiodev->bus;
+ priv->sw_addr = mdiodev->addr;
+
+ name = mv88e6060_get_name(priv->bus, priv->sw_addr);
+ if (!name)
+ return -ENODEV;
+
+ dev_info(dev, "switch %s detected\n", name);
+
+ ds = dsa_switch_alloc(dev, MV88E6060_PORTS);
+ if (!ds)
+ return -ENOMEM;
+
+ ds->priv = priv;
+ ds->dev = dev;
+ ds->ops = &mv88e6060_switch_ops;
+
+ dev_set_drvdata(dev, ds);
+
+ return dsa_register_switch(ds);
}
-module_init(mv88e6060_init);
-static void __exit mv88e6060_cleanup(void)
+static void mv88e6060_remove(struct mdio_device *mdiodev)
{
- unregister_switch_driver(&mv88e6060_switch_drv);
+ struct dsa_switch *ds = dev_get_drvdata(&mdiodev->dev);
+
+ dsa_unregister_switch(ds);
}
-module_exit(mv88e6060_cleanup);
+
+static const struct of_device_id mv88e6060_of_match[] = {
+ {
+ .compatible = "marvell,mv88e6060",
+ },
+ { /* sentinel */ },
+};
+
+static struct mdio_driver mv88e6060_driver = {
+ .probe = mv88e6060_probe,
+ .remove = mv88e6060_remove,
+ .mdiodrv.driver = {
+ .name = "mv88e6060",
+ .of_match_table = mv88e6060_of_match,
+ },
+};
+
+mdio_module_driver(mv88e6060_driver);
MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
MODULE_DESCRIPTION("Driver for Marvell 88E6060 ethernet switch chip");
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 1e6b4efc80b9..18db7b8e7a8e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -318,15 +318,6 @@ static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
bool is_static, void *data);
struct dsa_switch_ops {
-#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
- /*
- * Legacy probing.
- */
- const char *(*probe)(struct device *dsa_dev,
- struct device *host_dev, int sw_addr,
- void **priv);
-#endif
-
enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
int port);
@@ -516,20 +507,6 @@ struct dsa_switch_driver {
const struct dsa_switch_ops *ops;
};
-#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
-/* Legacy driver registration */
-void register_switch_driver(struct dsa_switch_driver *type);
-void unregister_switch_driver(struct dsa_switch_driver *type);
-struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
-
-#else
-static inline void register_switch_driver(struct dsa_switch_driver *type) { }
-static inline void unregister_switch_driver(struct dsa_switch_driver *type) { }
-static inline struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
-{
- return NULL;
-}
-#endif
struct net_device *dsa_dev_to_net_device(struct device *dev);
/* Keep inline for faster access in hot path */
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index 1f48642089ea..c0734028c7dc 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -17,15 +17,6 @@ menuconfig NET_DSA
if NET_DSA
-config NET_DSA_LEGACY
- bool "Support for older platform device and Device Tree registration"
- default y
- ---help---
- Say Y if you want to enable support for the older platform device and
- deprecated Device Tree binding registration.
-
- This feature is scheduled for removal in 4.17.
-
config NET_DSA_TAG_BRCM_COMMON
tristate
default n
diff --git a/net/dsa/Makefile b/net/dsa/Makefile
index 717ac1618100..8a737b6ee94c 100644
--- a/net/dsa/Makefile
+++ b/net/dsa/Makefile
@@ -2,7 +2,6 @@
# the core
obj-$(CONFIG_NET_DSA) += dsa_core.o
dsa_core-y += dsa.o dsa2.o master.o port.o slave.o switch.o
-dsa_core-$(CONFIG_NET_DSA_LEGACY) += legacy.o
# tagging formats
obj-$(CONFIG_NET_DSA_TAG_BRCM_COMMON) += tag_brcm.o
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index ba04c78633be..9e1fc0b08290 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -346,10 +346,6 @@ static int __init dsa_init_module(void)
if (rc)
return rc;
- rc = dsa_legacy_register();
- if (rc)
- return rc;
-
dev_add_pack(&dsa_pack_type);
dsa_tag_driver_register(&DSA_TAG_DRIVER_NAME(none_ops),
@@ -365,7 +361,6 @@ static void __exit dsa_cleanup_module(void)
dsa_slave_unregister_notifier();
dev_remove_pack(&dsa_pack_type);
- dsa_legacy_unregister();
destroy_workqueue(dsa_owq);
}
module_exit(dsa_cleanup_module);
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 37751b505572..b434f5ff55ab 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -90,18 +90,6 @@ void dsa_tag_driver_put(const struct dsa_device_ops *ops);
bool dsa_schedule_work(struct work_struct *work);
const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
-/* legacy.c */
-#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
-int dsa_legacy_register(void);
-void dsa_legacy_unregister(void);
-#else
-static inline int dsa_legacy_register(void)
-{
- return 0;
-}
-
-static inline void dsa_legacy_unregister(void) { }
-#endif
int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid,
diff --git a/net/dsa/legacy.c b/net/dsa/legacy.c
deleted file mode 100644
index 219f4fa7ff4b..000000000000
--- a/net/dsa/legacy.c
+++ /dev/null
@@ -1,747 +0,0 @@
-/*
- * net/dsa/legacy.c - Hardware switch handling
- * Copyright (c) 2008-2009 Marvell Semiconductor
- * Copyright (c) 2013 Florian Fainelli <florian@openwrt.org>
- *
- * 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/device.h>
-#include <linux/list.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_mdio.h>
-#include <linux/of_platform.h>
-#include <linux/of_net.h>
-#include <linux/netdevice.h>
-#include <linux/sysfs.h>
-#include <linux/phy_fixed.h>
-#include <linux/etherdevice.h>
-
-#include "dsa_priv.h"
-
-/* 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);
-}
-EXPORT_SYMBOL_GPL(register_switch_driver);
-
-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);
-}
-EXPORT_SYMBOL_GPL(unregister_switch_driver);
-
-static const struct dsa_switch_ops *
-dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
- const char **_name, void **priv)
-{
- const struct dsa_switch_ops *ret;
- struct list_head *list;
- const char *name;
-
- ret = NULL;
- name = NULL;
-
- mutex_lock(&dsa_switch_drivers_mutex);
- list_for_each(list, &dsa_switch_drivers) {
- const struct dsa_switch_ops *ops;
- struct dsa_switch_driver *drv;
-
- drv = list_entry(list, struct dsa_switch_driver, list);
- ops = drv->ops;
-
- name = ops->probe(parent, host_dev, sw_addr, priv);
- if (name != NULL) {
- ret = ops;
- break;
- }
- }
- mutex_unlock(&dsa_switch_drivers_mutex);
-
- *_name = name;
-
- return ret;
-}
-
-/* basic switch operations **************************************************/
-static int dsa_cpu_dsa_setups(struct dsa_switch *ds)
-{
- int ret, port;
-
- for (port = 0; port < ds->num_ports; port++) {
- if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
- continue;
-
- ret = dsa_port_link_register_of(&ds->ports[port]);
- if (ret)
- return ret;
- }
- return 0;
-}
-
-static int dsa_switch_setup_one(struct dsa_switch *ds,
- struct net_device *master)
-{
- const struct dsa_switch_ops *ops = ds->ops;
- struct dsa_switch_tree *dst = ds->dst;
- struct dsa_chip_data *cd = ds->cd;
- bool valid_name_found = false;
- int index = ds->index;
- struct dsa_port *dp;
- int i, ret;
-
- /*
- * Validate supplied switch configuration.
- */
- for (i = 0; i < ds->num_ports; i++) {
- char *name;
-
- dp = &ds->ports[i];
-
- name = cd->port_names[i];
- if (name == NULL)
- continue;
- dp->name = name;
-
- if (!strcmp(name, "cpu")) {
- if (dst->cpu_dp) {
- netdev_err(master,
- "multiple cpu ports?!\n");
- return -EINVAL;
- }
- dst->cpu_dp = &ds->ports[i];
- dst->cpu_dp->master = master;
- dp->type = DSA_PORT_TYPE_CPU;
- } else if (!strcmp(name, "dsa")) {
- dp->type = DSA_PORT_TYPE_DSA;
- } else {
- dp->type = DSA_PORT_TYPE_USER;
- }
- valid_name_found = true;
- }
-
- if (!valid_name_found && i == ds->num_ports)
- return -EINVAL;
-
- /* Make the built-in MII bus mask match the number of ports,
- * switch drivers can override this later
- */
- ds->phys_mii_mask |= dsa_user_ports(ds);
-
- /*
- * If the CPU connects to this switch, set the switch tree
- * tagging protocol to the preferred tagging format of this
- * switch.
- */
- if (dst->cpu_dp->ds == ds) {
- const struct dsa_device_ops *tag_ops;
- enum dsa_tag_protocol tag_protocol;
-
- tag_protocol = ops->get_tag_protocol(ds, dst->cpu_dp->index);
- tag_ops = dsa_tag_driver_get(tag_protocol);
- if (IS_ERR(tag_ops))
- return PTR_ERR(tag_ops);
-
- dst->cpu_dp->tag_ops = tag_ops;
-
- /* Few copies for faster access in master receive hot path */
- dst->cpu_dp->rcv = dst->cpu_dp->tag_ops->rcv;
- dst->cpu_dp->dst = dst;
- }
-
- dsa_tag_driver_put(dst->cpu_dp->tag_ops);
-
- memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
-
- /*
- * Do basic register setup.
- */
- ret = ops->setup(ds);
- if (ret < 0)
- return ret;
-
- ret = dsa_switch_register_notifier(ds);
- if (ret)
- return ret;
-
- if (!ds->slave_mii_bus && ops->phy_read) {
- ds->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
- if (!ds->slave_mii_bus)
- return -ENOMEM;
- dsa_slave_mii_bus_init(ds);
-
- ret = mdiobus_register(ds->slave_mii_bus);
- if (ret < 0)
- return ret;
- }
-
- /*
- * Create network devices for physical switch ports.
- */
- for (i = 0; i < ds->num_ports; i++) {
- ds->ports[i].dn = cd->port_dn[i];
- ds->ports[i].cpu_dp = dst->cpu_dp;
-
- if (!dsa_is_user_port(ds, i))
- continue;
-
- ret = dsa_slave_create(&ds->ports[i]);
- if (ret < 0)
- netdev_err(master, "[%d]: can't create dsa slave device for port %d(%s): %d\n",
- index, i, cd->port_names[i], ret);
- }
-
- /* Perform configuration of the CPU and DSA ports */
- ret = dsa_cpu_dsa_setups(ds);
- if (ret < 0)
- netdev_err(master, "[%d] : can't configure CPU and DSA ports\n",
- index);
-
- return 0;
-}
-
-static struct dsa_switch *
-dsa_switch_setup(struct dsa_switch_tree *dst, struct net_device *master,
- int index, struct device *parent, struct device *host_dev)
-{
- struct dsa_chip_data *cd = dst->pd->chip + index;
- const struct dsa_switch_ops *ops;
- struct dsa_switch *ds;
- int ret;
- const char *name;
- void *priv;
-
- /*
- * Probe for switch model.
- */
- ops = dsa_switch_probe(parent, host_dev, cd->sw_addr, &name, &priv);
- if (!ops) {
- netdev_err(master, "[%d]: could not detect attached switch\n",
- index);
- return ERR_PTR(-EINVAL);
- }
- netdev_info(master, "[%d]: detected a %s switch\n",
- index, name);
-
-
- /*
- * Allocate and initialise switch state.
- */
- ds = dsa_switch_alloc(parent, DSA_MAX_PORTS);
- if (!ds)
- return ERR_PTR(-ENOMEM);
-
- ds->dst = dst;
- ds->index = index;
- ds->cd = cd;
- ds->ops = ops;
- ds->priv = priv;
-
- ret = dsa_switch_setup_one(ds, master);
- if (ret)
- return ERR_PTR(ret);
-
- return ds;
-}
-
-static void dsa_switch_destroy(struct dsa_switch *ds)
-{
- int port;
-
- /* Destroy network devices for physical switch ports. */
- for (port = 0; port < ds->num_ports; port++) {
- if (!dsa_is_user_port(ds, port))
- continue;
-
- if (!ds->ports[port].slave)
- continue;
-
- dsa_slave_destroy(ds->ports[port].slave);
- }
-
- /* Disable configuration of the CPU and DSA ports */
- for (port = 0; port < ds->num_ports; port++) {
- if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
- continue;
- dsa_port_link_unregister_of(&ds->ports[port]);
- }
-
- if (ds->slave_mii_bus && ds->ops->phy_read)
- mdiobus_unregister(ds->slave_mii_bus);
-
- dsa_switch_unregister_notifier(ds);
-}
-
-/* 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);
-}
-
-struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
-{
- 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;
-}
-EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus);
-
-#ifdef CONFIG_OF
-static int dsa_of_setup_routing_table(struct dsa_platform_data *pd,
- struct dsa_chip_data *cd,
- int chip_index, int port_index,
- struct device_node *link)
-{
- const __be32 *reg;
- 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;
-
- /*
- * Get the destination switch number from the second field of its 'reg'
- * property, i.e. for "reg = <0x19 1>" sw_addr is '1'.
- */
- link_sw_addr = be32_to_cpup(reg + 1);
-
- if (link_sw_addr >= pd->nr_chips)
- return -EINVAL;
-
- cd->rtable[link_sw_addr] = port_index;
-
- return 0;
-}
-
-static int dsa_of_probe_links(struct dsa_platform_data *pd,
- struct dsa_chip_data *cd,
- int chip_index, int port_index,
- struct device_node *port,
- const char *port_name)
-{
- struct device_node *link;
- int link_index;
- int ret;
-
- for (link_index = 0;; link_index++) {
- link = of_parse_phandle(port, "link", link_index);
- if (!link)
- break;
-
- if (!strcmp(port_name, "dsa") && pd->nr_chips > 1) {
- ret = dsa_of_setup_routing_table(pd, cd, chip_index,
- port_index, link);
- if (ret)
- return ret;
- }
- }
- return 0;
-}
-
-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;
- while (port_index < DSA_MAX_PORTS) {
- kfree(pd->chip[i].port_names[port_index]);
- port_index++;
- }
-
- /* Drop our reference to the MDIO bus device */
- put_device(pd->chip[i].host_dev);
- }
- kfree(pd->chip);
-}
-
-static int dsa_of_probe(struct device *dev)
-{
- struct device_node *np = dev->of_node;
- struct device_node *child, *mdio, *ethernet, *port;
- struct mii_bus *mdio_bus, *mdio_bus_switch;
- struct net_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;
- u32 eeprom_len;
- int ret;
-
- mdio = of_parse_phandle(np, "dsa,mii-bus", 0);
- if (!mdio)
- return -EINVAL;
-
- mdio_bus = of_mdio_find_bus(mdio);
- if (!mdio_bus)
- return -EPROBE_DEFER;
-
- ethernet = of_parse_phandle(np, "dsa,ethernet", 0);
- if (!ethernet) {
- ret = -EINVAL;
- goto out_put_mdio;
- }
-
- ethernet_dev = of_find_net_device_by_node(ethernet);
- if (!ethernet_dev) {
- ret = -EPROBE_DEFER;
- goto out_put_mdio;
- }
-
- pd = kzalloc(sizeof(*pd), GFP_KERNEL);
- if (!pd) {
- ret = -ENOMEM;
- goto out_put_ethernet;
- }
-
- dev->platform_data = pd;
- pd->of_netdev = ethernet_dev;
- pd->nr_chips = of_get_available_child_count(np);
- if (pd->nr_chips > DSA_MAX_SWITCHES)
- pd->nr_chips = DSA_MAX_SWITCHES;
-
- pd->chip = kcalloc(pd->nr_chips, sizeof(struct dsa_chip_data),
- GFP_KERNEL);
- if (!pd->chip) {
- ret = -ENOMEM;
- goto out_free;
- }
-
- chip_index = -1;
- for_each_available_child_of_node(np, child) {
- int i;
-
- chip_index++;
- cd = &pd->chip[chip_index];
-
- cd->of_node = child;
-
- /* Initialize the routing table */
- for (i = 0; i < DSA_MAX_SWITCHES; ++i)
- cd->rtable[i] = DSA_RTABLE_NONE;
-
- /* When assigning the host device, increment its refcount */
- cd->host_dev = get_device(&mdio_bus->dev);
-
- 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;
-
- if (!of_property_read_u32(child, "eeprom-length", &eeprom_len))
- cd->eeprom_len = eeprom_len;
-
- mdio = of_parse_phandle(child, "mii-bus", 0);
- if (mdio) {
- mdio_bus_switch = of_mdio_find_bus(mdio);
- if (!mdio_bus_switch) {
- ret = -EPROBE_DEFER;
- goto out_free_chip;
- }
-
- /* Drop the mdio_bus device ref, replacing the host
- * device with the mdio_bus_switch device, keeping
- * the refcount from of_mdio_find_bus() above.
- */
- put_device(cd->host_dev);
- cd->host_dev = &mdio_bus_switch->dev;
- }
-
- 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);
- if (port_index >= DSA_MAX_PORTS)
- break;
-
- port_name = of_get_property(port, "label", NULL);
- if (!port_name)
- continue;
-
- cd->port_dn[port_index] = port;
-
- cd->port_names[port_index] = kstrdup(port_name,
- GFP_KERNEL);
- if (!cd->port_names[port_index]) {
- ret = -ENOMEM;
- goto out_free_chip;
- }
-
- ret = dsa_of_probe_links(pd, cd, chip_index,
- port_index, port, port_name);
- if (ret)
- goto out_free_chip;
-
- }
- }
-
- /* The individual chips hold their own refcount on the mdio bus,
- * so drop ours */
- put_device(&mdio_bus->dev);
-
- return 0;
-
-out_free_chip:
- dsa_of_free_platform_data(pd);
-out_free:
- kfree(pd);
- dev->platform_data = NULL;
-out_put_ethernet:
- put_device(&ethernet_dev->dev);
-out_put_mdio:
- put_device(&mdio_bus->dev);
- return ret;
-}
-
-static void dsa_of_remove(struct device *dev)
-{
- struct dsa_platform_data *pd = dev->platform_data;
-
- if (!dev->of_node)
- return;
-
- dsa_of_free_platform_data(pd);
- put_device(&pd->of_netdev->dev);
- kfree(pd);
-}
-#else
-static inline int dsa_of_probe(struct device *dev)
-{
- return 0;
-}
-
-static inline void dsa_of_remove(struct device *dev)
-{
-}
-#endif
-
-static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
- struct device *parent, struct dsa_platform_data *pd)
-{
- int i;
- unsigned configured = 0;
-
- dst->pd = pd;
-
- for (i = 0; i < pd->nr_chips; i++) {
- struct dsa_switch *ds;
-
- ds = dsa_switch_setup(dst, dev, i, parent, pd->chip[i].host_dev);
- if (IS_ERR(ds)) {
- netdev_err(dev, "[%d]: couldn't create dsa switch instance (error %ld)\n",
- i, PTR_ERR(ds));
- continue;
- }
-
- dst->ds[i] = ds;
-
- ++configured;
- }
-
- /*
- * If no switch was found, exit cleanly
- */
- if (!configured)
- return -EPROBE_DEFER;
-
- return dsa_master_setup(dst->cpu_dp->master, dst->cpu_dp);
-}
-
-static int dsa_probe(struct platform_device *pdev)
-{
- struct dsa_platform_data *pd = pdev->dev.platform_data;
- struct net_device *dev;
- struct dsa_switch_tree *dst;
- int ret;
-
- if (pdev->dev.of_node) {
- ret = dsa_of_probe(&pdev->dev);
- if (ret)
- return ret;
-
- pd = pdev->dev.platform_data;
- }
-
- if (pd == NULL || (pd->netdev == NULL && pd->of_netdev == NULL))
- return -EINVAL;
-
- if (pd->of_netdev) {
- dev = pd->of_netdev;
- dev_hold(dev);
- } else {
- dev = dsa_dev_to_net_device(pd->netdev);
- }
- if (dev == NULL) {
- ret = -EPROBE_DEFER;
- goto out;
- }
-
- if (dev->dsa_ptr != NULL) {
- dev_put(dev);
- ret = -EEXIST;
- goto out;
- }
-
- dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
- if (dst == NULL) {
- dev_put(dev);
- ret = -ENOMEM;
- goto out;
- }
-
- platform_set_drvdata(pdev, dst);
-
- ret = dsa_setup_dst(dst, dev, &pdev->dev, pd);
- if (ret) {
- dev_put(dev);
- goto out;
- }
-
- return 0;
-
-out:
- dsa_of_remove(&pdev->dev);
-
- return ret;
-}
-
-static void dsa_remove_dst(struct dsa_switch_tree *dst)
-{
- int i;
-
- dsa_master_teardown(dst->cpu_dp->master);
-
- for (i = 0; i < dst->pd->nr_chips; i++) {
- struct dsa_switch *ds = dst->ds[i];
-
- if (ds)
- dsa_switch_destroy(ds);
- }
-
- dev_put(dst->cpu_dp->master);
-}
-
-static int dsa_remove(struct platform_device *pdev)
-{
- struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
-
- dsa_remove_dst(dst);
- dsa_of_remove(&pdev->dev);
-
- return 0;
-}
-
-static void dsa_shutdown(struct platform_device *pdev)
-{
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int dsa_suspend(struct device *d)
-{
- struct dsa_switch_tree *dst = dev_get_drvdata(d);
- 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 dsa_switch_tree *dst = dev_get_drvdata(d);
- 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);
-
-static const struct of_device_id dsa_of_match_table[] = {
- { .compatible = "marvell,dsa", },
- {}
-};
-MODULE_DEVICE_TABLE(of, dsa_of_match_table);
-
-static struct platform_driver dsa_driver = {
- .probe = dsa_probe,
- .remove = dsa_remove,
- .shutdown = dsa_shutdown,
- .driver = {
- .name = "dsa",
- .of_match_table = dsa_of_match_table,
- .pm = &dsa_pm_ops,
- },
-};
-
-int dsa_legacy_register(void)
-{
- return platform_driver_register(&dsa_driver);
-}
-
-void dsa_legacy_unregister(void)
-{
- platform_driver_unregister(&dsa_driver);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 09:57:07 +0000