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Diffstat (limited to 'net/dsa/dsa.c')
-rw-r--r--net/dsa/dsa.c186
1 files changed, 148 insertions, 38 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 0a49632fac47..22f34cf4cb27 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -10,7 +10,6 @@
*/
#include <linux/list.h>
-#include <linux/netdevice.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/module.h>
@@ -44,7 +43,7 @@ void unregister_switch_driver(struct dsa_switch_driver *drv)
EXPORT_SYMBOL_GPL(unregister_switch_driver);
static struct dsa_switch_driver *
-dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name)
+dsa_switch_probe(struct device *host_dev, int sw_addr, char **_name)
{
struct dsa_switch_driver *ret;
struct list_head *list;
@@ -59,7 +58,7 @@ dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name)
drv = list_entry(list, struct dsa_switch_driver, list);
- name = drv->probe(bus, sw_addr);
+ name = drv->probe(host_dev, sw_addr);
if (name != NULL) {
ret = drv;
break;
@@ -76,7 +75,7 @@ dsa_switch_probe(struct mii_bus *bus, int sw_addr, char **_name)
/* basic switch operations **************************************************/
static struct dsa_switch *
dsa_switch_setup(struct dsa_switch_tree *dst, int index,
- struct device *parent, struct mii_bus *bus)
+ struct device *parent, struct device *host_dev)
{
struct dsa_chip_data *pd = dst->pd->chip + index;
struct dsa_switch_driver *drv;
@@ -89,7 +88,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
/*
* Probe for switch model.
*/
- drv = dsa_switch_probe(bus, pd->sw_addr, &name);
+ drv = dsa_switch_probe(host_dev, pd->sw_addr, &name);
if (drv == NULL) {
printk(KERN_ERR "%s[%d]: could not detect attached switch\n",
dst->master_netdev->name, index);
@@ -110,8 +109,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
ds->index = index;
ds->pd = dst->pd->chip + index;
ds->drv = drv;
- ds->master_mii_bus = bus;
-
+ ds->master_dev = host_dev;
/*
* Validate supplied switch configuration.
@@ -144,14 +142,44 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
goto out;
}
+ /* 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;
+
/*
* If the CPU connects to this switch, set the switch tree
* tagging protocol to the preferred tagging format of this
* switch.
*/
- if (ds->dst->cpu_switch == index)
- ds->dst->tag_protocol = drv->tag_protocol;
+ 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
+ default:
+ break;
+ }
+ dst->tag_protocol = drv->tag_protocol;
+ }
/*
* Do basic register setup.
@@ -210,6 +238,51 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
{
}
+#ifdef CONFIG_PM_SLEEP
+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;
+}
+#endif
+
/* link polling *************************************************************/
static void dsa_link_poll_work(struct work_struct *ugly)
@@ -256,7 +329,7 @@ static struct device *dev_find_class(struct device *parent, char *class)
return device_find_child(parent, class, dev_is_class);
}
-static struct mii_bus *dev_to_mii_bus(struct device *dev)
+struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
{
struct device *d;
@@ -272,6 +345,7 @@ static struct mii_bus *dev_to_mii_bus(struct device *dev)
return NULL;
}
+EXPORT_SYMBOL_GPL(dsa_host_dev_to_mii_bus);
static struct net_device *dev_to_net_device(struct device *dev)
{
@@ -410,7 +484,8 @@ static int dsa_of_probe(struct platform_device *pdev)
chip_index++;
cd = &pd->chip[chip_index];
- cd->mii_bus = &mdio_bus->dev;
+ cd->of_node = child;
+ cd->host_dev = &mdio_bus->dev;
sw_addr = of_get_property(child, "reg", NULL);
if (!sw_addr)
@@ -431,6 +506,8 @@ static int dsa_of_probe(struct platform_device *pdev)
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]) {
@@ -534,17 +611,9 @@ static int dsa_probe(struct platform_device *pdev)
dst->cpu_port = -1;
for (i = 0; i < pd->nr_chips; i++) {
- struct mii_bus *bus;
struct dsa_switch *ds;
- bus = dev_to_mii_bus(pd->chip[i].mii_bus);
- if (bus == NULL) {
- printk(KERN_ERR "%s[%d]: no mii bus found for "
- "dsa switch\n", dev->name, i);
- continue;
- }
-
- ds = dsa_switch_setup(dst, i, &pdev->dev, bus);
+ ds = dsa_switch_setup(dst, i, &pdev->dev, pd->chip[i].host_dev);
if (IS_ERR(ds)) {
printk(KERN_ERR "%s[%d]: couldn't create dsa switch "
"instance (error %ld)\n", dev->name, i,
@@ -608,7 +677,62 @@ static void dsa_shutdown(struct platform_device *pdev)
{
}
+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;
+ }
+
+ return dst->rcv(skb, dev, pt, orig_dev);
+}
+
+static struct packet_type dsa_pack_type __read_mostly = {
+ .type = cpu_to_be16(ETH_P_XDSA),
+ .func = dsa_switch_rcv,
+};
+
+#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);
+
static const struct of_device_id dsa_of_match_table[] = {
+ { .compatible = "brcm,bcm7445-switch-v4.0" },
{ .compatible = "marvell,dsa", },
{}
};
@@ -622,6 +746,7 @@ static struct platform_driver dsa_driver = {
.name = "dsa",
.owner = THIS_MODULE,
.of_match_table = dsa_of_match_table,
+ .pm = &dsa_pm_ops,
},
};
@@ -633,30 +758,15 @@ static int __init dsa_init_module(void)
if (rc)
return rc;
-#ifdef CONFIG_NET_DSA_TAG_DSA
- dev_add_pack(&dsa_packet_type);
-#endif
-#ifdef CONFIG_NET_DSA_TAG_EDSA
- dev_add_pack(&edsa_packet_type);
-#endif
-#ifdef CONFIG_NET_DSA_TAG_TRAILER
- dev_add_pack(&trailer_packet_type);
-#endif
+ dev_add_pack(&dsa_pack_type);
+
return 0;
}
module_init(dsa_init_module);
static void __exit dsa_cleanup_module(void)
{
-#ifdef CONFIG_NET_DSA_TAG_TRAILER
- dev_remove_pack(&trailer_packet_type);
-#endif
-#ifdef CONFIG_NET_DSA_TAG_EDSA
- dev_remove_pack(&edsa_packet_type);
-#endif
-#ifdef CONFIG_NET_DSA_TAG_DSA
- dev_remove_pack(&dsa_packet_type);
-#endif
+ dev_remove_pack(&dsa_pack_type);
platform_driver_unregister(&dsa_driver);
}
module_exit(dsa_cleanup_module);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.