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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4bac50bace
The link status is polled by the generic phy layer, there's no need to duplicate that polling with additional polling. This additional polling adds additional MDIO traffic, and races with the generic phy layer, resulting in missing or duplicated link status messages. Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
142 lines
3.7 KiB
C
142 lines
3.7 KiB
C
/*
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* net/dsa/mv88e6123_61_65.c - Marvell 88e6123/6161/6165 switch chip support
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/delay.h>
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#include <linux/jiffies.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#include <net/dsa.h>
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#include "mv88e6xxx.h"
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static char *mv88e6123_61_65_probe(struct device *host_dev, int sw_addr)
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{
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struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
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int ret;
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if (bus == NULL)
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return NULL;
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ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
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if (ret >= 0) {
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if (ret == PORT_SWITCH_ID_6123_A1)
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return "Marvell 88E6123 (A1)";
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if (ret == PORT_SWITCH_ID_6123_A2)
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return "Marvell 88E6123 (A2)";
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if ((ret & 0xfff0) == PORT_SWITCH_ID_6123)
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return "Marvell 88E6123";
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if (ret == PORT_SWITCH_ID_6161_A1)
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return "Marvell 88E6161 (A1)";
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if (ret == PORT_SWITCH_ID_6161_A2)
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return "Marvell 88E6161 (A2)";
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if ((ret & 0xfff0) == PORT_SWITCH_ID_6161)
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return "Marvell 88E6161";
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if (ret == PORT_SWITCH_ID_6165_A1)
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return "Marvell 88E6165 (A1)";
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if (ret == PORT_SWITCH_ID_6165_A2)
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return "Marvell 88e6165 (A2)";
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if ((ret & 0xfff0) == PORT_SWITCH_ID_6165)
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return "Marvell 88E6165";
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}
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return NULL;
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}
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static int mv88e6123_61_65_setup_global(struct dsa_switch *ds)
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{
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u32 upstream_port = dsa_upstream_port(ds);
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int ret;
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u32 reg;
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ret = mv88e6xxx_setup_global(ds);
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if (ret)
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return ret;
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/* Disable the PHY polling unit (since there won't be any
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* external PHYs to poll), don't discard packets with
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* excessive collisions, and mask all interrupt sources.
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*/
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REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, 0x0000);
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/* Configure the upstream port, and configure the upstream
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* port as the port to which ingress and egress monitor frames
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* are to be sent.
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*/
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reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
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upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
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upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT;
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REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
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/* Disable remote management for now, and set the switch's
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* DSA device number.
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*/
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REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
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return 0;
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}
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static int mv88e6123_61_65_setup(struct dsa_switch *ds)
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{
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struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
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int ret;
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ret = mv88e6xxx_setup_common(ds);
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if (ret < 0)
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return ret;
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switch (ps->id) {
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case PORT_SWITCH_ID_6123:
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ps->num_ports = 3;
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break;
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case PORT_SWITCH_ID_6161:
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case PORT_SWITCH_ID_6165:
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ps->num_ports = 6;
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break;
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default:
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return -ENODEV;
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}
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ret = mv88e6xxx_switch_reset(ds, false);
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if (ret < 0)
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return ret;
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ret = mv88e6123_61_65_setup_global(ds);
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if (ret < 0)
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return ret;
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return mv88e6xxx_setup_ports(ds);
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}
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struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
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.tag_protocol = DSA_TAG_PROTO_EDSA,
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.priv_size = sizeof(struct mv88e6xxx_priv_state),
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.probe = mv88e6123_61_65_probe,
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.setup = mv88e6123_61_65_setup,
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.set_addr = mv88e6xxx_set_addr_indirect,
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.phy_read = mv88e6xxx_phy_read,
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.phy_write = mv88e6xxx_phy_write,
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.get_strings = mv88e6xxx_get_strings,
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.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
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.get_sset_count = mv88e6xxx_get_sset_count,
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.adjust_link = mv88e6xxx_adjust_link,
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#ifdef CONFIG_NET_DSA_HWMON
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.get_temp = mv88e6xxx_get_temp,
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#endif
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.get_regs_len = mv88e6xxx_get_regs_len,
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.get_regs = mv88e6xxx_get_regs,
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};
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MODULE_ALIAS("platform:mv88e6123");
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MODULE_ALIAS("platform:mv88e6161");
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MODULE_ALIAS("platform:mv88e6165");
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