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net: ti: icssg-prueth: Add prp offload support to ICSSG driver

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Add support for ICSSG PRP mode which supports offloading of:
 - Packet duplication and PRP trailer insertion
 - Packet duplicate discard and PRP trailer removal

Signed-off-by: Himanshu Mittal <h-mittal1@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250618175536.430568-1-h-mittal1@ti.com
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Himanshu Mittal 2025-06-18 23:25:36 +05:30 committed by Jakub Kicinski
parent 77f08133bc
commit 4f4040ea5d
2 changed files with 16 additions and 1 deletions
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12
drivers/net/ethernet/ti/icssg/icssg_prueth.c
View File

@ -148,8 +148,10 @@ static int prueth_emac_start(struct prueth *prueth)
if (prueth->is_switch_mode)
firmwares = prueth->icssg_switch_firmwares;
else if (prueth->is_hsr_offload_mode)
else if (prueth->is_hsr_offload_mode && HSR_V1 == prueth->hsr_prp_version)
firmwares = prueth->icssg_hsr_firmwares;
else if (prueth->is_hsr_offload_mode && PRP_V1 == prueth->hsr_prp_version)
firmwares = prueth->icssg_prp_firmwares;
else
firmwares = prueth->icssg_emac_firmwares;
@ -1527,6 +1529,7 @@ static int prueth_netdevice_event(struct notifier_block *unused,
struct netdev_notifier_changeupper_info *info;
struct prueth_emac *emac = netdev_priv(ndev);
struct prueth *prueth = emac->prueth;
enum hsr_version hsr_ndev_version;
int ret = NOTIFY_DONE;
if (ndev->netdev_ops != &emac_netdev_ops)
@ -1538,6 +1541,11 @@ static int prueth_netdevice_event(struct notifier_block *unused,
if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) &&
is_hsr_master(info->upper_dev)) {
hsr_get_version(info->upper_dev, &hsr_ndev_version);
if (hsr_ndev_version != HSR_V1 && hsr_ndev_version != PRP_V1)
return -EOPNOTSUPP;
prueth->hsr_prp_version = hsr_ndev_version;
if (info->linking) {
if (!prueth->hsr_dev) {
prueth->hsr_dev = info->upper_dev;
@ -1858,6 +1866,8 @@ static int prueth_probe(struct platform_device *pdev)
prueth->icssg_switch_firmwares, "eth", "sw");
icssg_mode_firmware_names(dev, prueth->icssg_emac_firmwares,
prueth->icssg_hsr_firmwares, "eth", "hsr");
icssg_mode_firmware_names(dev, prueth->icssg_emac_firmwares,
prueth->icssg_prp_firmwares, "eth", "prp");
spin_lock_init(&prueth->vtbl_lock);
spin_lock_init(&prueth->stats_lock);

5
drivers/net/ethernet/ti/icssg/icssg_prueth.h
View File

@ -13,6 +13,7 @@
#include <linux/etherdevice.h>
#include <linux/genalloc.h>
#include <linux/if_vlan.h>
#include <linux/if_hsr.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
@ -290,6 +291,7 @@ struct icssg_firmwares {
* @vlan_tbl: VLAN-FID table pointer
* @hw_bridge_dev: pointer to HW bridge net device
* @hsr_dev: pointer to the HSR net device
* @hsr_prp_version: enum to store the protocol version of hsr master
* @br_members: bitmask of bridge member ports
* @hsr_members: bitmask of hsr member ports
* @prueth_netdevice_nb: netdevice notifier block
@ -303,6 +305,7 @@ struct icssg_firmwares {
* @icssg_emac_firmwares: Firmware names for EMAC mode, indexed per MAC
* @icssg_switch_firmwares: Firmware names for SWITCH mode, indexed per MAC
* @icssg_hsr_firmwares: Firmware names for HSR mode, indexed per MAC
* @icssg_prp_firmwares: Firmware names for PRP mode, indexed per MAC
*/
struct prueth {
struct device *dev;
@ -332,6 +335,7 @@ struct prueth {
struct net_device *hw_bridge_dev;
struct net_device *hsr_dev;
enum hsr_version hsr_prp_version;
u8 br_members;
u8 hsr_members;
struct notifier_block prueth_netdevice_nb;
@ -349,6 +353,7 @@ struct prueth {
struct icssg_firmwares icssg_emac_firmwares[PRUETH_NUM_MACS];
struct icssg_firmwares icssg_switch_firmwares[PRUETH_NUM_MACS];
struct icssg_firmwares icssg_hsr_firmwares[PRUETH_NUM_MACS];
struct icssg_firmwares icssg_prp_firmwares[PRUETH_NUM_MACS];
};
struct emac_tx_ts_response {