forked from Openwrt-EcoNet/openwrt
f3fc278fcb
Add the second part of the PPE driver. This includes the EDMA and network device support. This part does not appear to have been officially submitted for upstream review. The series is taken from target/linux/qualcommbe/patches-6.6, and had to be heavily modified in order to compile of v6.12. Changes to patches are noted in the respective patch body. Also add the PPE and EDMA nodes in this series. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Link: https://github.com/openwrt/openwrt/pull/18796 Signed-off-by: Robert Marko <robimarko@gmail.com>
79 lines
2.7 KiB
Diff
79 lines
2.7 KiB
Diff
From 3981aeae5dd43dea94a0ec10f0b2977ebd102560 Mon Sep 17 00:00:00 2001
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From: Luo Jie <quic_luoj@quicinc.com>
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Date: Tue, 5 Mar 2024 16:42:56 +0800
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Subject: [PATCH] net: ethernet: qualcomm: Add API to configure PPE port max
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frame size
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This function is called when the MTU of an ethernet port is
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configured. It limits the size of packet passed through the
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ethernet port.
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Change-Id: I2a4dcd04407156d73770d2becbb7cbc0d56b3754
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Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
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---
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drivers/net/ethernet/qualcomm/ppe/ppe_port.c | 44 ++++++++++++++++++++
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drivers/net/ethernet/qualcomm/ppe/ppe_port.h | 1 +
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2 files changed, 45 insertions(+)
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--- a/drivers/net/ethernet/qualcomm/ppe/ppe_port.c
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+++ b/drivers/net/ethernet/qualcomm/ppe/ppe_port.c
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@@ -537,6 +537,50 @@ int ppe_port_set_mac_eee(struct ppe_port
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return ret;
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}
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+/**
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+ * ppe_port_set_maxframe() - Set port maximum frame size
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+ * @ppe_port: PPE port structure
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+ * @maxframe_size: Maximum frame size supported by PPE port
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+ *
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+ * Description: Set MTU of network interface specified by @ppe_port.
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+ *
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+ * Return: 0 upon success or a negative error upon failure.
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+ */
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+int ppe_port_set_maxframe(struct ppe_port *ppe_port, int maxframe_size)
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+{
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+ struct ppe_device *ppe_dev = ppe_port->ppe_dev;
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+ u32 reg, val, mru_mtu_val[3];
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+ int port = ppe_port->port_id;
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+ int ret;
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+
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+ /* The max frame size should be MTU added by ETH_HLEN in PPE. */
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+ maxframe_size += ETH_HLEN;
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+
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+ /* MAC takes cover the FCS for the calculation of frame size. */
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+ if (maxframe_size > PPE_PORT_MAC_MAX_FRAME_SIZE - ETH_FCS_LEN)
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+ return -EINVAL;
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+
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+ reg = PPE_MC_MTU_CTRL_TBL_ADDR + PPE_MC_MTU_CTRL_TBL_INC * port;
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+ val = FIELD_PREP(PPE_MC_MTU_CTRL_TBL_MTU, maxframe_size);
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+ ret = regmap_update_bits(ppe_dev->regmap, reg,
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+ PPE_MC_MTU_CTRL_TBL_MTU,
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+ val);
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+ if (ret)
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+ return ret;
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+
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+ reg = PPE_MRU_MTU_CTRL_TBL_ADDR + PPE_MRU_MTU_CTRL_TBL_INC * port;
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+ ret = regmap_bulk_read(ppe_dev->regmap, reg,
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+ mru_mtu_val, ARRAY_SIZE(mru_mtu_val));
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+ if (ret)
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+ return ret;
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+
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+ PPE_MRU_MTU_CTRL_SET_MRU(mru_mtu_val, maxframe_size);
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+ PPE_MRU_MTU_CTRL_SET_MTU(mru_mtu_val, maxframe_size);
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+
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+ return regmap_bulk_write(ppe_dev->regmap, reg,
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+ mru_mtu_val, ARRAY_SIZE(mru_mtu_val));
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+}
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+
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/* PPE port and MAC reset */
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static int ppe_port_mac_reset(struct ppe_port *ppe_port)
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{
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--- a/drivers/net/ethernet/qualcomm/ppe/ppe_port.h
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+++ b/drivers/net/ethernet/qualcomm/ppe/ppe_port.h
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@@ -89,4 +89,5 @@ void ppe_port_get_stats64(struct ppe_por
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struct rtnl_link_stats64 *s);
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int ppe_port_set_mac_address(struct ppe_port *ppe_port, const u8 *addr);
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int ppe_port_set_mac_eee(struct ppe_port *ppe_port, struct ethtool_keee *eee);
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+int ppe_port_set_maxframe(struct ppe_port *ppe_port, int maxframe_size);
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#endif
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