192 lines
4.8 KiB
C
192 lines
4.8 KiB
C
/*
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* net/dsa/mv88e6131.c - Marvell 88e6095/6095f/6131 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 *mv88e6131_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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int ret_masked = ret & 0xfff0;
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if (ret_masked == PORT_SWITCH_ID_6085)
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return "Marvell 88E6085";
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if (ret_masked == PORT_SWITCH_ID_6095)
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return "Marvell 88E6095/88E6095F";
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if (ret == PORT_SWITCH_ID_6131_B2)
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return "Marvell 88E6131 (B2)";
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if (ret_masked == PORT_SWITCH_ID_6131)
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return "Marvell 88E6131";
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if (ret_masked == PORT_SWITCH_ID_6185)
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return "Marvell 88E6185";
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}
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return NULL;
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}
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static int mv88e6131_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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/* Enable the PHY polling unit, don't discard packets with
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* excessive collisions, use a weighted fair queueing scheme
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* to arbitrate between packet queues, set the maximum frame
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* size to 1632, and mask all interrupt sources.
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*/
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REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
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GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_MAX_FRAME_1632);
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/* Set the VLAN ethertype to 0x8100. */
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REG_WRITE(REG_GLOBAL, GLOBAL_CORE_TAG_TYPE, 0x8100);
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/* Disable ARP mirroring, and configure the upstream port as
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* the port to which ingress and egress monitor frames are to
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* 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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GLOBAL_MONITOR_CONTROL_ARP_DISABLED;
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REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
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/* Disable cascade port functionality unless this device
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* is used in a cascade configuration, and set the switch's
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* DSA device number.
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*/
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if (ds->dst->pd->nr_chips > 1)
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REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2,
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GLOBAL_CONTROL_2_MULTIPLE_CASCADE |
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(ds->index & 0x1f));
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else
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REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2,
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GLOBAL_CONTROL_2_NO_CASCADE |
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(ds->index & 0x1f));
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/* Force the priority of IGMP/MLD snoop frames and ARP frames
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* to the highest setting.
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*/
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REG_WRITE(REG_GLOBAL2, GLOBAL2_PRIO_OVERRIDE,
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GLOBAL2_PRIO_OVERRIDE_FORCE_SNOOP |
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7 << GLOBAL2_PRIO_OVERRIDE_SNOOP_SHIFT |
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GLOBAL2_PRIO_OVERRIDE_FORCE_ARP |
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7 << GLOBAL2_PRIO_OVERRIDE_ARP_SHIFT);
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return 0;
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}
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static int mv88e6131_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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mv88e6xxx_ppu_state_init(ds);
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switch (ps->id) {
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case PORT_SWITCH_ID_6085:
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case PORT_SWITCH_ID_6185:
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ps->num_ports = 10;
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break;
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case PORT_SWITCH_ID_6095:
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ps->num_ports = 11;
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break;
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case PORT_SWITCH_ID_6131:
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case PORT_SWITCH_ID_6131_B2:
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ps->num_ports = 8;
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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 = mv88e6131_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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static int mv88e6131_port_to_phy_addr(struct dsa_switch *ds, int port)
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{
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struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
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if (port >= 0 && port < ps->num_ports)
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return port;
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return -EINVAL;
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}
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static int
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mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum)
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{
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int addr = mv88e6131_port_to_phy_addr(ds, port);
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if (addr < 0)
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return addr;
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return mv88e6xxx_phy_read_ppu(ds, addr, regnum);
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}
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static int
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mv88e6131_phy_write(struct dsa_switch *ds,
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int port, int regnum, u16 val)
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{
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int addr = mv88e6131_port_to_phy_addr(ds, port);
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if (addr < 0)
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return addr;
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return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val);
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}
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struct dsa_switch_driver mv88e6131_switch_driver = {
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.tag_protocol = DSA_TAG_PROTO_DSA,
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.priv_size = sizeof(struct mv88e6xxx_priv_state),
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.probe = mv88e6131_probe,
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.setup = mv88e6131_setup,
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.set_addr = mv88e6xxx_set_addr_direct,
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.phy_read = mv88e6131_phy_read,
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.phy_write = mv88e6131_phy_write,
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.poll_link = mv88e6xxx_poll_link,
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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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};
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MODULE_ALIAS("platform:mv88e6085");
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MODULE_ALIAS("platform:mv88e6095");
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MODULE_ALIAS("platform:mv88e6095f");
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MODULE_ALIAS("platform:mv88e6131");
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