[U-Boot] [PATCH 2/5] drivers: net: keystone_net: add support for multi slave ethernet
Mugunthan V N
mugunthanvnm at ti.com
Tue Aug 2 08:31:12 CEST 2016
Keystone net can have multiple ethernet slaves, currently only
slave 1 is supported by the driver. Register multiple slaves as
individual ethernets to network framework.
Signed-off-by: Mugunthan V N <mugunthanvnm at ti.com>
---
drivers/net/keystone_net.c | 222 ++++++++++++++++++++++++++++++++++++---------
1 file changed, 177 insertions(+), 45 deletions(-)
diff --git a/drivers/net/keystone_net.c b/drivers/net/keystone_net.c
index 1756c09..e41b7d1 100644
--- a/drivers/net/keystone_net.c
+++ b/drivers/net/keystone_net.c
@@ -11,6 +11,7 @@
#include <console.h>
#include <dm.h>
+#include <dm/lists.h>
#include <net.h>
#include <phy.h>
@@ -765,6 +766,8 @@ static int ks2_eth_start(struct udevice *dev)
hw_config_streaming_switch();
if (priv->has_mdio) {
+ keystone2_mdio_reset(priv->mdio_bus);
+
phy_startup(priv->phydev);
if (priv->phydev->link == 0) {
error("phy startup failed\n");
@@ -910,23 +913,34 @@ static int ks2_eth_probe(struct udevice *dev)
priv->net_rx_buffs.num_buffs = RX_BUFF_NUMS;
priv->net_rx_buffs.buff_len = RX_BUFF_LEN;
- /* Register MDIO bus */
- mdio_bus = mdio_alloc();
- if (!mdio_bus) {
- error("MDIO alloc failed\n");
- return -ENOMEM;
- }
- priv->mdio_bus = mdio_bus;
- mdio_bus->read = keystone2_mdio_read;
- mdio_bus->write = keystone2_mdio_write;
- mdio_bus->reset = keystone2_mdio_reset;
- mdio_bus->priv = priv->mdio_base;
- sprintf(mdio_bus->name, "ethernet-mdio");
-
- ret = mdio_register(mdio_bus);
- if (ret) {
- error("MDIO bus register failed\n");
- return ret;
+ if (priv->slave_port == 1) {
+ /*
+ * Register MDIO bus for slave 0 only, other slave have
+ * to re-use the same
+ */
+ mdio_bus = mdio_alloc();
+ if (!mdio_bus) {
+ error("MDIO alloc failed\n");
+ return -ENOMEM;
+ }
+ priv->mdio_bus = mdio_bus;
+ mdio_bus->read = keystone2_mdio_read;
+ mdio_bus->write = keystone2_mdio_write;
+ mdio_bus->reset = keystone2_mdio_reset;
+ mdio_bus->priv = priv->mdio_base;
+ sprintf(mdio_bus->name, "ethernet-mdio");
+
+ ret = mdio_register(mdio_bus);
+ if (ret) {
+ error("MDIO bus register failed\n");
+ return ret;
+ }
+ } else {
+ /* Get the MDIO bus from slave 0 device */
+ struct ks2_eth_priv *parent_priv;
+
+ parent_priv = dev_get_priv(dev->parent);
+ priv->mdio_bus = parent_priv->mdio_bus;
}
#ifndef CONFIG_SOC_K2G
@@ -935,8 +949,11 @@ static int ks2_eth_probe(struct udevice *dev)
priv->netcp_pktdma = &netcp_pktdma;
- priv->phydev = phy_connect(mdio_bus, priv->phy_addr, dev, priv->phy_if);
- phy_config(priv->phydev);
+ if (priv->has_mdio) {
+ priv->phydev = phy_connect(priv->mdio_bus, priv->phy_addr,
+ dev, priv->phy_if);
+ phy_config(priv->phydev);
+ }
return 0;
}
@@ -962,39 +979,103 @@ static const struct eth_ops ks2_eth_ops = {
.write_hwaddr = ks2_eth_write_hwaddr,
};
-
-static int ks2_eth_ofdata_to_platdata(struct udevice *dev)
+static int ks2_eth_bind_slaves(struct udevice *dev, int gbe, int *gbe_0)
{
- struct ks2_eth_priv *priv = dev_get_priv(dev);
- struct eth_pdata *pdata = dev_get_platdata(dev);
const void *fdt = gd->fdt_blob;
+ struct udevice *sl_dev;
int interfaces;
- int interface_0;
- int netcp_gbe_0;
- int phy;
+ int sec_slave;
+ int slave;
+ int ret;
+ char *slave_name;
+
+ interfaces = fdt_subnode_offset(fdt, gbe, "interfaces");
+ fdt_for_each_subnode(fdt, slave, interfaces) {
+ int slave_no;
+
+ slave_no = fdtdec_get_int(fdt, slave, "slave-port", -ENOENT);
+ if (slave_no == -ENOENT)
+ continue;
+
+ if (slave_no == 0) {
+ /* This is the current eth device */
+ *gbe_0 = slave;
+ } else {
+ /* Slave devices to be registered */
+ slave_name = malloc(20);
+ snprintf(slave_name, 20, "netcp at slave-%d", slave_no);
+ ret = device_bind_driver_to_node(dev, "eth_ks2_sl",
+ slave_name, slave,
+ &sl_dev);
+ if (ret) {
+ error("ks2_net - not able to bind slave interfaces\n");
+ return ret;
+ }
+ }
+ }
+
+ sec_slave = fdt_subnode_offset(fdt, gbe, "secondary-slave-ports");
+ fdt_for_each_subnode(fdt, slave, sec_slave) {
+ int slave_no;
+
+ slave_no = fdtdec_get_int(fdt, slave, "slave-port", -ENOENT);
+ if (slave_no == -ENOENT)
+ continue;
+
+ /* Slave devices to be registered */
+ slave_name = malloc(20);
+ snprintf(slave_name, 20, "netcp at slave-%d", slave_no);
+ ret = device_bind_driver_to_node(dev, "eth_ks2_sl", slave_name,
+ slave, &sl_dev);
+ if (ret) {
+ error("ks2_net - not able to bind slave interfaces\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ks2_eth_parse_slave_interface(int netcp, int slave,
+ struct ks2_eth_priv *priv,
+ struct eth_pdata *pdata)
+{
+ const void *fdt = gd->fdt_blob;
int mdio;
- u32 dma_channel[6];
+ int phy;
+ int dma_count;
+ u32 dma_channel[8];
- interfaces = fdt_subnode_offset(fdt, dev->of_offset,
- "netcp-interfaces");
- interface_0 = fdt_subnode_offset(fdt, interfaces, "interface-0");
+ priv->slave_port = fdtdec_get_int(fdt, slave, "slave-port", -1);
+ priv->net_rx_buffs.rx_flow = priv->slave_port * 8;
- netcp_gbe_0 = fdtdec_lookup_phandle(fdt, interface_0, "netcp-gbe");
- priv->link_type = fdtdec_get_int(fdt, netcp_gbe_0,
- "link-interface", -1);
- priv->slave_port = fdtdec_get_int(fdt, netcp_gbe_0, "slave-port", -1);
/* U-Boot slave port number starts with 1 instead of 0 */
priv->slave_port += 1;
- phy = fdtdec_lookup_phandle(fdt, netcp_gbe_0, "phy-handle");
- priv->phy_addr = fdtdec_get_int(fdt, phy, "reg", -1);
+ dma_count = fdtdec_get_int_array_count(fdt, netcp,
+ "ti,navigator-dmas",
+ dma_channel, 8);
- mdio = fdt_parent_offset(fdt, phy);
- if (mdio < 0) {
- error("mdio dt not found\n");
- return -ENODEV;
+ if (dma_count > (2 * priv->slave_port)) {
+ int dma_idx;
+
+ dma_idx = priv->slave_port * 2 - 1;
+ priv->net_rx_buffs.rx_flow = dma_channel[dma_idx];
+ }
+
+ priv->link_type = fdtdec_get_int(fdt, slave, "link-interface", -1);
+
+ phy = fdtdec_lookup_phandle(fdt, slave, "phy-handle");
+ if (phy >= 0) {
+ priv->phy_addr = fdtdec_get_int(fdt, phy, "reg", -1);
+
+ mdio = fdt_parent_offset(fdt, phy);
+ if (mdio < 0) {
+ error("mdio dt not found\n");
+ return -ENODEV;
+ }
+ priv->mdio_base = (void *)fdtdec_get_addr(fdt, mdio, "reg");
}
- priv->mdio_base = (void *)fdtdec_get_addr(fdt, mdio, "reg");
if (priv->link_type == LINK_TYPE_MAC_TO_PHY_MODE) {
priv->phy_if = PHY_INTERFACE_MODE_SGMII;
@@ -1002,11 +1083,51 @@ static int ks2_eth_ofdata_to_platdata(struct udevice *dev)
priv->sgmii_link_type = SGMII_LINK_MAC_PHY;
priv->has_mdio = true;
}
- pdata->iobase = dev_get_addr(dev);
- fdtdec_get_int_array(fdt, dev->of_offset, "ti,navigator-dmas",
- dma_channel, 6);
- priv->net_rx_buffs.rx_flow = dma_channel[1];
+ return 0;
+}
+
+static int ks2_sl_eth_ofdata_to_platdata(struct udevice *dev)
+{
+ struct ks2_eth_priv *priv = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ const void *fdt = gd->fdt_blob;
+ int slave = dev->of_offset;
+ int interfaces;
+ int gbe;
+ int netcp_devices;
+ int netcp;
+
+ interfaces = fdt_parent_offset(fdt, slave);
+ gbe = fdt_parent_offset(fdt, interfaces);
+ netcp_devices = fdt_parent_offset(fdt, gbe);
+ netcp = fdt_parent_offset(fdt, netcp_devices);
+
+ ks2_eth_parse_slave_interface(netcp, slave, priv, pdata);
+
+ pdata->iobase = fdtdec_get_addr(fdt, netcp, "reg");
+
+ return 0;
+}
+
+static int ks2_eth_ofdata_to_platdata(struct udevice *dev)
+{
+ struct ks2_eth_priv *priv = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ const void *fdt = gd->fdt_blob;
+ int gbe_0 = -ENODEV;
+ int netcp_devices;
+ int gbe;
+
+ netcp_devices = fdt_subnode_offset(fdt, dev->of_offset,
+ "netcp-devices");
+ gbe = fdt_subnode_offset(fdt, netcp_devices, "gbe");
+
+ ks2_eth_bind_slaves(dev, gbe, &gbe_0);
+
+ ks2_eth_parse_slave_interface(dev->of_offset, gbe_0, priv, pdata);
+
+ pdata->iobase = dev_get_addr(dev);
return 0;
}
@@ -1016,6 +1137,17 @@ static const struct udevice_id ks2_eth_ids[] = {
{ }
};
+U_BOOT_DRIVER(eth_ks2_slave) = {
+ .name = "eth_ks2_sl",
+ .id = UCLASS_ETH,
+ .ofdata_to_platdata = ks2_sl_eth_ofdata_to_platdata,
+ .probe = ks2_eth_probe,
+ .remove = ks2_eth_remove,
+ .ops = &ks2_eth_ops,
+ .priv_auto_alloc_size = sizeof(struct ks2_eth_priv),
+ .platdata_auto_alloc_size = sizeof(struct eth_pdata),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
U_BOOT_DRIVER(eth_ks2) = {
.name = "eth_ks2",
--
2.9.2.517.gf8f7adc
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