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 *dsa_dev, struct device *host_dev,
  28                              int sw_addr, void **priv)
  29 {
  30         struct mv88e6xxx_priv_state *ps;
  31         char *name;
  32
  33         name = mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6171_table,
  34                                      ARRAY_SIZE(mv88e6171_table));
  35                 if (name) {
  36                 ps = devm_kzalloc(dsa_dev, sizeof(*ps), GFP_KERNEL);
  37                 if (!ps)
  38                         return NULL;
  39                 *priv = ps;
  40         }
  41         return name;
  42 }
  43
  44 static int mv88e6171_setup_global(struct dsa_switch *ds)
  45 {
  46         u32 upstream_port = dsa_upstream_port(ds);
  47         int ret;
  48         u32 reg;
  49
  50         ret = mv88e6xxx_setup_global(ds);
  51         if (ret)
  52                 return ret;
  53
  54         /* Discard packets with excessive collisions, mask all
  55          * interrupt sources, enable PPU.
  56          */
  57         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
  58                   GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS);
  59
  60         /* Configure the upstream port, and configure the upstream
  61          * port as the port to which ingress and egress monitor frames
  62          * are to be sent.
  63          */
  64         reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
  65                 upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
  66                 upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT |
  67                 upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
  68         REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  69
  70         /* Disable remote management for now, and set the switch's
  71          * DSA device number.
  72          */
  73         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
  74
  75         return 0;
  76 }
  77
  78 static int mv88e6171_setup(struct dsa_switch *ds)
  79 {
  80         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  81         int ret;
  82
  83         ps->ds = ds;
  84
  85         ret = mv88e6xxx_setup_common(ds);
  86         if (ret < 0)
  87                 return ret;
  88
  89         ps->num_ports = 7;
  90
  91         ret = mv88e6xxx_switch_reset(ds, true);
  92         if (ret < 0)
  93                 return ret;
  94
  95         ret = mv88e6171_setup_global(ds);
  96         if (ret < 0)
  97                 return ret;
  98
  99         return mv88e6xxx_setup_ports(ds);
 100 }
 101
 102 struct dsa_switch_driver mv88e6171_switch_driver = {
 103         .tag_protocol           = DSA_TAG_PROTO_EDSA,
 104         .probe                  = mv88e6171_probe,
 105         .setup                  = mv88e6171_setup,
 106         .set_addr               = mv88e6xxx_set_addr_indirect,
 107         .phy_read               = mv88e6xxx_phy_read_indirect,
 108         .phy_write              = mv88e6xxx_phy_write_indirect,
 109         .get_strings            = mv88e6xxx_get_strings,
 110         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
 111         .get_sset_count         = mv88e6xxx_get_sset_count,
 112         .adjust_link            = mv88e6xxx_adjust_link,
 113 #ifdef CONFIG_NET_DSA_HWMON
 114         .get_temp               = mv88e6xxx_get_temp,
 115 #endif
 116         .get_regs_len           = mv88e6xxx_get_regs_len,
 117         .get_regs               = mv88e6xxx_get_regs,
 118         .port_bridge_join       = mv88e6xxx_port_bridge_join,
 119         .port_bridge_leave      = mv88e6xxx_port_bridge_leave,
 120         .port_stp_state_set     = mv88e6xxx_port_stp_state_set,
 121         .port_vlan_filtering    = mv88e6xxx_port_vlan_filtering,
 122         .port_vlan_prepare      = mv88e6xxx_port_vlan_prepare,
 123         .port_vlan_add          = mv88e6xxx_port_vlan_add,
 124         .port_vlan_del          = mv88e6xxx_port_vlan_del,
 125         .port_vlan_dump         = mv88e6xxx_port_vlan_dump,
 126         .port_fdb_prepare       = mv88e6xxx_port_fdb_prepare,
 127         .port_fdb_add           = mv88e6xxx_port_fdb_add,
 128         .port_fdb_del           = mv88e6xxx_port_fdb_del,
 129         .port_fdb_dump          = mv88e6xxx_port_fdb_dump,
 130 };
 131
 132 MODULE_ALIAS("platform:mv88e6171");
 133 MODULE_ALIAS("platform:mv88e6175");
 134 MODULE_ALIAS("platform:mv88e6350");
 135 MODULE_ALIAS("platform:mv88e6351");