drivers/net/dsa/mv88e6171.c

   1 /* net/dsa/mv88e6171.c - Marvell 88e6171 switch chip support
   2  * Copyright (c) 2008-2009 Marvell Semiconductor
   3  * Copyright (c) 2014 Claudio Leite <leitec@staticky.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  */
  10
  11 #include <linux/delay.h>
  12 #include <linux/jiffies.h>
  13 #include <linux/list.h>
  14 #include <linux/module.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/phy.h>
  17 #include <net/dsa.h>
  18 #include "mv88e6xxx.h"
  19
  20 static const struct mv88e6xxx_switch_id mv88e6171_table[] = {
  21         { PORT_SWITCH_ID_6171, "Marvell 88E6171" },
  22         { PORT_SWITCH_ID_6175, "Marvell 88E6175" },
  23         { PORT_SWITCH_ID_6350, "Marvell 88E6350" },
  24         { PORT_SWITCH_ID_6351, "Marvell 88E6351" },
  25 };
  26
  27 static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
  28 {
  29         return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6171_table,
  30                                      ARRAY_SIZE(mv88e6171_table));
  31 }
  32
  33 static int mv88e6171_setup_global(struct dsa_switch *ds)
  34 {
  35         u32 upstream_port = dsa_upstream_port(ds);
  36         int ret;
  37         u32 reg;
  38
  39         ret = mv88e6xxx_setup_global(ds);
  40         if (ret)
  41                 return ret;
  42
  43         /* Discard packets with excessive collisions, mask all
  44          * interrupt sources, enable PPU.
  45          */
  46         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
  47                   GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS);
  48
  49         /* Configure the upstream port, and configure the upstream
  50          * port as the port to which ingress and egress monitor frames
  51          * are to be sent.
  52          */
  53         reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
  54                 upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
  55                 upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT |
  56                 upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
  57         REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  58
  59         /* Disable remote management for now, and set the switch's
  60          * DSA device number.
  61          */
  62         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
  63
  64         return 0;
  65 }
  66
  67 static int mv88e6171_setup(struct dsa_switch *ds)
  68 {
  69         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  70         int ret;
  71
  72         ret = mv88e6xxx_setup_common(ds);
  73         if (ret < 0)
  74                 return ret;
  75
  76         ps->num_ports = 7;
  77
  78         ret = mv88e6xxx_switch_reset(ds, true);
  79         if (ret < 0)
  80                 return ret;
  81
  82         ret = mv88e6171_setup_global(ds);
  83         if (ret < 0)
  84                 return ret;
  85
  86         return mv88e6xxx_setup_ports(ds);
  87 }
  88
  89 struct dsa_switch_driver mv88e6171_switch_driver = {
  90         .tag_protocol           = DSA_TAG_PROTO_EDSA,
  91         .priv_size              = sizeof(struct mv88e6xxx_priv_state),
  92         .probe                  = mv88e6171_probe,
  93         .setup                  = mv88e6171_setup,
  94         .set_addr               = mv88e6xxx_set_addr_indirect,
  95         .phy_read               = mv88e6xxx_phy_read_indirect,
  96         .phy_write              = mv88e6xxx_phy_write_indirect,
  97         .get_strings            = mv88e6xxx_get_strings,
  98         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
  99         .get_sset_count         = mv88e6xxx_get_sset_count,
 100         .adjust_link            = mv88e6xxx_adjust_link,
 101 #ifdef CONFIG_NET_DSA_HWMON
 102         .get_temp               = mv88e6xxx_get_temp,
 103 #endif
 104         .get_regs_len           = mv88e6xxx_get_regs_len,
 105         .get_regs               = mv88e6xxx_get_regs,
 106         .port_stp_update        = mv88e6xxx_port_stp_update,
 107         .port_pvid_get          = mv88e6xxx_port_pvid_get,
 108         .port_vlan_prepare      = mv88e6xxx_port_vlan_prepare,
 109         .port_vlan_add          = mv88e6xxx_port_vlan_add,
 110         .port_vlan_del          = mv88e6xxx_port_vlan_del,
 111         .vlan_getnext           = mv88e6xxx_vlan_getnext,
 112         .port_fdb_prepare       = mv88e6xxx_port_fdb_prepare,
 113         .port_fdb_add           = mv88e6xxx_port_fdb_add,
 114         .port_fdb_del           = mv88e6xxx_port_fdb_del,
 115         .port_fdb_dump          = mv88e6xxx_port_fdb_dump,
 116 };
 117
 118 MODULE_ALIAS("platform:mv88e6171");
 119 MODULE_ALIAS("platform:mv88e6175");
 120 MODULE_ALIAS("platform:mv88e6350");
 121 MODULE_ALIAS("platform:mv88e6351");