@@ -79,6 +79,20 @@ config TI_CPSW_SWITCHDEV
To compile this driver as a module, choose M here: the module
will be called cpsw_new.
+config TI_CPSW_PROXY_CLIENT
+ tristate "TI CPSW Proxy Client"
+ depends on ARCH_K3 && OF && TI_K3_UDMA_GLUE_LAYER
+ help
+ This driver supports Ethernet functionality for CPSWnG
+ Ethernet Subsystem which is configured by Ethernet Switch
+ Firmware (EthFw).
+
+ The Ethernet Switch Firmware acts as a proxy to the Linux
+ Client driver by performing all the necessary configuration
+ of the CPSW Peripheral while enabling network data transfer
+ to/from the Linux Client to CPSW over the allocated TX DMA
+ Channels and RX DMA Flows.
+
config TI_CPTS
tristate "TI Common Platform Time Sync (CPTS) Support"
depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || COMPILE_TEST
@@ -7,6 +7,9 @@ obj-$(CONFIG_TI_CPSW) += cpsw-common.o
obj-$(CONFIG_TI_DAVINCI_EMAC) += cpsw-common.o
obj-$(CONFIG_TI_CPSW_SWITCHDEV) += cpsw-common.o
+obj-$(CONFIG_TI_CPSW_PROXY_CLIENT) += ti-cpsw-proxy-client.o
+ti-cpsw-proxy-client-y := cpsw-proxy-client.o
+
obj-$(CONFIG_TLAN) += tlan.o
obj-$(CONFIG_TI_DAVINCI_EMAC) += ti_davinci_emac.o
ti_davinci_emac-y := davinci_emac.o davinci_cpdma.o
new file mode 100644
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-only or MIT
+/* Texas Instruments CPSW Proxy Client Driver
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/rpmsg.h>
+
+#include "ethfw_abi.h"
+
+struct cpsw_proxy_priv {
+ struct rpmsg_device *rpdev;
+ struct device *dev;
+};
+
+static int cpsw_proxy_client_cb(struct rpmsg_device *rpdev, void *data,
+ int len, void *priv, u32 src)
+{
+ struct device *dev = &rpdev->dev;
+
+ dev_dbg(dev, "callback invoked\n");
+
+ return 0;
+}
+
+static int cpsw_proxy_client_probe(struct rpmsg_device *rpdev)
+{
+ struct cpsw_proxy_priv *proxy_priv;
+
+ proxy_priv = devm_kzalloc(&rpdev->dev, sizeof(struct cpsw_proxy_priv), GFP_KERNEL);
+ if (!proxy_priv)
+ return -ENOMEM;
+
+ proxy_priv->rpdev = rpdev;
+ proxy_priv->dev = &rpdev->dev;
+ dev_dbg(proxy_priv->dev, "driver probed\n");
+
+ return 0;
+}
+
+static void cpsw_proxy_client_remove(struct rpmsg_device *rpdev)
+{
+ struct device *dev = &rpdev->dev;
+
+ dev_dbg(dev, "driver removed\n");
+}
+
+static struct rpmsg_device_id cpsw_proxy_client_id_table[] = {
+ {
+ .name = ETHFW_SERVICE_EP_NAME,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(rpmsg, cpsw_proxy_client_id_table);
+
+static struct rpmsg_driver cpsw_proxy_client_driver = {
+ .drv.name = KBUILD_MODNAME,
+ .id_table = cpsw_proxy_client_id_table,
+ .probe = cpsw_proxy_client_probe,
+ .callback = cpsw_proxy_client_cb,
+ .remove = cpsw_proxy_client_remove,
+};
+module_rpmsg_driver(cpsw_proxy_client_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("CPSW Proxy Client Driver");
+MODULE_AUTHOR("Siddharth Vadapalli <s-vadapalli@ti.com>");
The CPSW Proxy Client driver in Linux communicates with Ethernet Switch Firmware (EthFw) running on a remote core via RPMsg. EthFw announces its RPMsg Endpoint over the RPMsg-Bus notifying its presence to all Clients. Register the CPSW Proxy Client driver with the RPMsg framework. Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com> --- drivers/net/ethernet/ti/Kconfig | 14 +++++ drivers/net/ethernet/ti/Makefile | 3 + drivers/net/ethernet/ti/cpsw-proxy-client.c | 70 +++++++++++++++++++++ 3 files changed, 87 insertions(+) create mode 100644 drivers/net/ethernet/ti/cpsw-proxy-client.c