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Message-ID: <20240518124234.2671651-5-s-vadapalli@ti.com>
Date: Sat, 18 May 2024 18:12:10 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <corbet@....net>, <rogerq@...nel.org>,
<danishanwar@...com>, <vladimir.oltean@....com>
CC: <netdev@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<vigneshr@...com>, <misael.lopez@...com>, <srk@...com>,
<s-vadapalli@...com>
Subject: [RFC PATCH net-next 04/28] net: ethernet: ti: cpsw-proxy-client: add support for creating requests
The CPSW Proxy Client driver exchanges various types of requests with EthFw
to achieve desired functionality. Add a function to create request messages
that can be sent to EthFw over RPMsg-Bus, given the type of the request
message and additional parameters required to form the message.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
drivers/net/ethernet/ti/cpsw-proxy-client.c | 140 ++++++++++++++++++++
1 file changed, 140 insertions(+)
diff --git a/drivers/net/ethernet/ti/cpsw-proxy-client.c b/drivers/net/ethernet/ti/cpsw-proxy-client.c
index 91d3338b3788..3533f4ce1e3f 100644
--- a/drivers/net/ethernet/ti/cpsw-proxy-client.c
+++ b/drivers/net/ethernet/ti/cpsw-proxy-client.c
@@ -5,12 +5,29 @@
*
*/
+#include <linux/etherdevice.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/rpmsg.h>
#include "ethfw_abi.h"
+struct cpsw_proxy_req_params {
+ struct message req_msg; /* Request message to be filled */
+ u32 token;
+ u32 client_id;
+ u32 request_id;
+ u32 request_type;
+ u32 rx_tx_idx; /* RX or TX Channel index */
+ u32 rx_flow_base; /* RX DMA Flow base */
+ u32 rx_flow_offset; /* RX DMA Flow offset */
+ u32 tx_thread_id; /* PSI-L Thread ID of TX Channel */
+ u32 port_id; /* Virtual Port ID */
+ u16 vlan_id;
+ u8 mac_addr[ETH_ALEN];
+ u8 ipv4_addr[ETHFW_IPV4ADDRLEN];
+};
+
struct cpsw_proxy_priv {
struct rpmsg_device *rpdev;
struct device *dev;
@@ -26,6 +43,129 @@ static int cpsw_proxy_client_cb(struct rpmsg_device *rpdev, void *data,
return 0;
}
+static int create_request_message(struct cpsw_proxy_req_params *req_params)
+{
+ struct mac_register_deregister_request *mac_reg_dereg_req;
+ struct ipv4_deregister_request *ipv4_dereg_req;
+ struct common_request_message *common_req_msg;
+ struct tx_thread_release_request *tx_free_req;
+ struct tx_thread_alloc_request *tx_alloc_req;
+ struct add_multicast_request *mcast_add_req;
+ struct del_multicast_request *mcast_del_req;
+ struct rx_flow_release_request *rx_free_req;
+ struct ipv4_register_request *ipv4_reg_req;
+ struct request_message_header *req_msg_hdr;
+ struct rx_flow_alloc_request *rx_alloc_req;
+ struct message *msg = &req_params->req_msg;
+ struct mac_release_request *mac_free_req;
+ struct attach_request *attach_req;
+ u32 req_type;
+
+ /* Set message header fields */
+ msg->msg_hdr.token = req_params->token;
+ msg->msg_hdr.client_id = req_params->client_id;
+ msg->msg_hdr.msg_type = ETHFW_MSG_REQUEST;
+
+ req_type = req_params->request_type;
+
+ switch (req_type) {
+ case ETHFW_ALLOC_RX:
+ rx_alloc_req = (struct rx_flow_alloc_request *)msg;
+ req_msg_hdr = &rx_alloc_req->request_msg_hdr;
+ rx_alloc_req->rx_flow_idx = req_params->rx_tx_idx;
+ break;
+
+ case ETHFW_ALLOC_TX:
+ tx_alloc_req = (struct tx_thread_alloc_request *)msg;
+ req_msg_hdr = &tx_alloc_req->request_msg_hdr;
+ tx_alloc_req->tx_chan_idx = req_params->rx_tx_idx;
+ break;
+
+ case ETHFW_VIRT_PORT_ATTACH:
+ attach_req = (struct attach_request *)msg;
+ req_msg_hdr = &attach_req->request_msg_hdr;
+ attach_req->virt_port = req_params->port_id;
+ break;
+
+ case ETHFW_FREE_MAC:
+ mac_free_req = (struct mac_release_request *)msg;
+ req_msg_hdr = &mac_free_req->request_msg_hdr;
+ ether_addr_copy(mac_free_req->mac_addr, req_params->mac_addr);
+ break;
+
+ case ETHFW_FREE_RX:
+ rx_free_req = (struct rx_flow_release_request *)msg;
+ req_msg_hdr = &rx_free_req->request_msg_hdr;
+ rx_free_req->rx_flow_idx_base = req_params->rx_flow_base;
+ rx_free_req->rx_flow_idx_offset = req_params->rx_flow_offset;
+ break;
+
+ case ETHFW_FREE_TX:
+ tx_free_req = (struct tx_thread_release_request *)msg;
+ req_msg_hdr = &tx_free_req->request_msg_hdr;
+ tx_free_req->tx_psil_dest_id = req_params->tx_thread_id;
+ break;
+
+ case ETHFW_IPv4_DEREGISTER:
+ ipv4_dereg_req = (struct ipv4_deregister_request *)msg;
+ req_msg_hdr = &ipv4_dereg_req->request_msg_hdr;
+ memcpy(&ipv4_dereg_req->ipv4_addr, req_params->ipv4_addr,
+ ETHFW_IPV4ADDRLEN);
+ break;
+
+ case ETHFW_IPv4_REGISTER:
+ ipv4_reg_req = (struct ipv4_register_request *)msg;
+ req_msg_hdr = &ipv4_reg_req->request_msg_hdr;
+ memcpy(&ipv4_reg_req->ipv4_addr, req_params->ipv4_addr,
+ ETHFW_IPV4ADDRLEN);
+ ether_addr_copy(ipv4_reg_req->mac_addr,
+ req_params->mac_addr);
+ break;
+
+ case ETHFW_MAC_DEREGISTER:
+ case ETHFW_MAC_REGISTER:
+ mac_reg_dereg_req = (struct mac_register_deregister_request *)msg;
+ req_msg_hdr = &mac_reg_dereg_req->request_msg_hdr;
+ ether_addr_copy(mac_reg_dereg_req->mac_addr,
+ req_params->mac_addr);
+ mac_reg_dereg_req->rx_flow_idx_base = req_params->rx_flow_base;
+ mac_reg_dereg_req->rx_flow_idx_offset = req_params->rx_flow_offset;
+ break;
+
+ case ETHFW_MCAST_FILTER_ADD:
+ mcast_add_req = (struct add_multicast_request *)msg;
+ req_msg_hdr = &mcast_add_req->request_msg_hdr;
+ ether_addr_copy(mcast_add_req->mac_addr, req_params->mac_addr);
+ mcast_add_req->vlan_id = req_params->vlan_id;
+ mcast_add_req->rx_flow_idx_base = req_params->rx_flow_base;
+ mcast_add_req->rx_flow_idx_offset = req_params->rx_flow_offset;
+ break;
+
+ case ETHFW_MCAST_FILTER_DEL:
+ mcast_del_req = (struct del_multicast_request *)msg;
+ req_msg_hdr = &mcast_del_req->request_msg_hdr;
+ ether_addr_copy(mcast_del_req->mac_addr, req_params->mac_addr);
+ mcast_del_req->vlan_id = req_params->vlan_id;
+ break;
+
+ case ETHFW_ALLOC_MAC:
+ case ETHFW_VIRT_PORT_DETACH:
+ case ETHFW_VIRT_PORT_INFO:
+ common_req_msg = (struct common_request_message *)msg;
+ req_msg_hdr = &common_req_msg->request_msg_hdr;
+ break;
+
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ /* Set request message header fields */
+ req_msg_hdr->request_id = req_params->request_id;
+ req_msg_hdr->request_type = req_params->request_type;
+
+ return 0;
+}
+
static int cpsw_proxy_client_probe(struct rpmsg_device *rpdev)
{
struct cpsw_proxy_priv *proxy_priv;
--
2.40.1
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