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/*
* net/dsa/mv88e6131.c - Marvell 88e6095/6095f/6131 switch chip support
* Copyright (c) 2008-2009 Marvell Semiconductor
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <net/dsa.h>
#include "mv88e6xxx.h"
static char *mv88e6131_probe(struct device *host_dev, int sw_addr)
{
struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
int ret;
if (bus == NULL)
return NULL;
ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
if (ret >= 0) {
int ret_masked = ret & 0xfff0;
if (ret_masked == PORT_SWITCH_ID_6085)
return "Marvell 88E6085";
if (ret_masked == PORT_SWITCH_ID_6095)
return "Marvell 88E6095/88E6095F";
if (ret == PORT_SWITCH_ID_6131_B2)
return "Marvell 88E6131 (B2)";
if (ret_masked == PORT_SWITCH_ID_6131)
return "Marvell 88E6131";
if (ret_masked == PORT_SWITCH_ID_6185)
return "Marvell 88E6185";
}
return NULL;
}
static int mv88e6131_setup_global(struct dsa_switch *ds)
{
u32 upstream_port = dsa_upstream_port(ds);
int ret;
u32 reg;
ret = mv88e6xxx_setup_global(ds);
if (ret)
return ret;
/* Enable the PHY polling unit, don't discard packets with
* excessive collisions, use a weighted fair queueing scheme
* to arbitrate between packet queues, set the maximum frame
* size to 1632, and mask all interrupt sources.
*/
REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_MAX_FRAME_1632);
/* Set the VLAN ethertype to 0x8100. */
REG_WRITE(REG_GLOBAL, GLOBAL_CORE_TAG_TYPE, 0x8100);
/* Disable ARP mirroring, and configure the upstream port as
* the port to which ingress and egress monitor frames are to
* be sent.
*/
reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
GLOBAL_MONITOR_CONTROL_ARP_DISABLED;
REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
/* Disable cascade port functionality unless this device
* is used in a cascade configuration, and set the switch's
* DSA device number.
*/
if (ds->dst->pd->nr_chips > 1)
REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2,
GLOBAL_CONTROL_2_MULTIPLE_CASCADE |
(ds->index & 0x1f));
else
REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2,
GLOBAL_CONTROL_2_NO_CASCADE |
(ds->index & 0x1f));
/* Force the priority of IGMP/MLD snoop frames and ARP frames
* to the highest setting.
*/
REG_WRITE(REG_GLOBAL2, GLOBAL2_PRIO_OVERRIDE,
GLOBAL2_PRIO_OVERRIDE_FORCE_SNOOP |
7 << GLOBAL2_PRIO_OVERRIDE_SNOOP_SHIFT |
GLOBAL2_PRIO_OVERRIDE_FORCE_ARP |
7 << GLOBAL2_PRIO_OVERRIDE_ARP_SHIFT);
return 0;
}
static int mv88e6131_setup(struct dsa_switch *ds)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int ret;
ret = mv88e6xxx_setup_common(ds);
if (ret < 0)
return ret;
mv88e6xxx_ppu_state_init(ds);
switch (ps->id) {
case PORT_SWITCH_ID_6085:
case PORT_SWITCH_ID_6185:
ps->num_ports = 10;
break;
case PORT_SWITCH_ID_6095:
ps->num_ports = 11;
break;
case PORT_SWITCH_ID_6131:
case PORT_SWITCH_ID_6131_B2:
ps->num_ports = 8;
break;
default:
return -ENODEV;
}
ret = mv88e6xxx_switch_reset(ds, false);
if (ret < 0)
return ret;
ret = mv88e6131_setup_global(ds);
if (ret < 0)
return ret;
return mv88e6xxx_setup_ports(ds);
}
static int mv88e6131_port_to_phy_addr(struct dsa_switch *ds, int port)
{
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
if (port >= 0 && port < ps->num_ports)
return port;
return -EINVAL;
}
static int
mv88e6131_phy_read(struct dsa_switch *ds, int port, int regnum)
{
int addr = mv88e6131_port_to_phy_addr(ds, port);
if (addr < 0)
return addr;
return mv88e6xxx_phy_read_ppu(ds, addr, regnum);
}
static int
mv88e6131_phy_write(struct dsa_switch *ds,
int port, int regnum, u16 val)
{
int addr = mv88e6131_port_to_phy_addr(ds, port);
if (addr < 0)
return addr;
return mv88e6xxx_phy_write_ppu(ds, addr, regnum, val);
}
struct dsa_switch_driver mv88e6131_switch_driver = {
.tag_protocol = DSA_TAG_PROTO_DSA,
.priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6131_probe,
.setup = mv88e6131_setup,
.set_addr = mv88e6xxx_set_addr_direct,
.phy_read = mv88e6131_phy_read,
.phy_write = mv88e6131_phy_write,
.poll_link = mv88e6xxx_poll_link,
.get_strings = mv88e6xxx_get_strings,
.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
.get_sset_count = mv88e6xxx_get_sset_count,
.adjust_link = mv88e6xxx_adjust_link,
};
MODULE_ALIAS("platform:mv88e6085");
MODULE_ALIAS("platform:mv88e6095");
MODULE_ALIAS("platform:mv88e6095f");
MODULE_ALIAS("platform:mv88e6131");
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