49 lines
1.7 KiB
Diff
49 lines
1.7 KiB
Diff
From 0fc57e4b5e39461fc0a54aae0afe4241363a7267 Mon Sep 17 00:00:00 2001
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From: Ansuel Smith <ansuelsmth@gmail.com>
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Date: Fri, 14 May 2021 23:00:03 +0200
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Subject: [PATCH] net: dsa: qca8k: add GLOBAL_FC settings needed for qca8327
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Switch qca8327 needs special settings for the GLOBAL_FC_THRES regs.
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Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/qca8k.c | 10 ++++++++++
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drivers/net/dsa/qca8k.h | 6 ++++++
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2 files changed, 16 insertions(+)
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--- a/drivers/net/dsa/qca8k.c
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+++ b/drivers/net/dsa/qca8k.c
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@@ -930,6 +930,16 @@ qca8k_setup(struct dsa_switch *ds)
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}
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}
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+ /* Special GLOBAL_FC_THRESH value are needed for ar8327 switch */
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+ if (priv->switch_id == QCA8K_ID_QCA8327) {
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+ mask = QCA8K_GLOBAL_FC_GOL_XON_THRES(288) |
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+ QCA8K_GLOBAL_FC_GOL_XOFF_THRES(496);
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+ qca8k_rmw(priv, QCA8K_REG_GLOBAL_FC_THRESH,
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+ QCA8K_GLOBAL_FC_GOL_XON_THRES_S |
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+ QCA8K_GLOBAL_FC_GOL_XOFF_THRES_S,
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+ mask);
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+ }
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+
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/* Setup our port MTUs to match power on defaults */
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for (i = 0; i < QCA8K_NUM_PORTS; i++)
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priv->port_mtu[i] = ETH_FRAME_LEN + ETH_FCS_LEN;
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--- a/drivers/net/dsa/qca8k.h
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+++ b/drivers/net/dsa/qca8k.h
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@@ -168,6 +168,12 @@
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#define QCA8K_PORT_LOOKUP_STATE GENMASK(18, 16)
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#define QCA8K_PORT_LOOKUP_LEARN BIT(20)
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+#define QCA8K_REG_GLOBAL_FC_THRESH 0x800
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+#define QCA8K_GLOBAL_FC_GOL_XON_THRES(x) ((x) << 16)
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+#define QCA8K_GLOBAL_FC_GOL_XON_THRES_S GENMASK(24, 16)
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+#define QCA8K_GLOBAL_FC_GOL_XOFF_THRES(x) ((x) << 0)
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+#define QCA8K_GLOBAL_FC_GOL_XOFF_THRES_S GENMASK(8, 0)
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+
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#define QCA8K_REG_PORT_HOL_CTRL0(_i) (0x970 + (_i) * 0x8)
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#define QCA8K_PORT_HOL_CTRL0_EG_PRI0_BUF GENMASK(3, 0)
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#define QCA8K_PORT_HOL_CTRL0_EG_PRI0(x) ((x) << 0)
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