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 char *mv88e6171_probe(struct device *host_dev, int sw_addr)
  21 {
  22         struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
  23         int ret;
  24
  25         if (bus == NULL)
  26                 return NULL;
  27
  28         ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID);
  29         if (ret >= 0) {
  30                 if ((ret & 0xfff0) == PORT_SWITCH_ID_6171)
  31                         return "Marvell 88E6171";
  32                 if ((ret & 0xfff0) == PORT_SWITCH_ID_6175)
  33                         return "Marvell 88E6175";
  34                 if ((ret & 0xfff0) == PORT_SWITCH_ID_6350)
  35                         return "Marvell 88E6350";
  36                 if ((ret & 0xfff0) == PORT_SWITCH_ID_6351)
  37                         return "Marvell 88E6351";
  38         }
  39
  40         return NULL;
  41 }
  42
  43 static int mv88e6171_setup_global(struct dsa_switch *ds)
  44 {
  45         u32 upstream_port = dsa_upstream_port(ds);
  46         int ret;
  47         u32 reg;
  48
  49         ret = mv88e6xxx_setup_global(ds);
  50         if (ret)
  51                 return ret;
  52
  53         /* Discard packets with excessive collisions, mask all
  54          * interrupt sources, enable PPU.
  55          */
  56         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL,
  57                   GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS);
  58
  59         /* Configure the upstream port, and configure the upstream
  60          * port as the port to which ingress and egress monitor frames
  61          * are to be sent.
  62          */
  63         reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
  64                 upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
  65                 upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT |
  66                 upstream_port << GLOBAL_MONITOR_CONTROL_MIRROR_SHIFT;
  67         REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  68
  69         /* Disable remote management for now, and set the switch's
  70          * DSA device number.
  71          */
  72         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
  73
  74         return 0;
  75 }
  76
  77 static int mv88e6171_setup(struct dsa_switch *ds)
  78 {
  79         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  80         int ret;
  81
  82         ret = mv88e6xxx_setup_common(ds);
  83         if (ret < 0)
  84                 return ret;
  85
  86         ps->num_ports = 7;
  87
  88         ret = mv88e6xxx_switch_reset(ds, true);
  89         if (ret < 0)
  90                 return ret;
  91
  92         ret = mv88e6171_setup_global(ds);
  93         if (ret < 0)
  94                 return ret;
  95
  96         return mv88e6xxx_setup_ports(ds);
  97 }
  98
  99 struct dsa_switch_driver mv88e6171_switch_driver = {
 100         .tag_protocol           = DSA_TAG_PROTO_EDSA,
 101         .priv_size              = sizeof(struct mv88e6xxx_priv_state),
 102         .probe                  = mv88e6171_probe,
 103         .setup                  = mv88e6171_setup,
 104         .set_addr               = mv88e6xxx_set_addr_indirect,
 105         .phy_read               = mv88e6xxx_phy_read_indirect,
 106         .phy_write              = mv88e6xxx_phy_write_indirect,
 107         .get_strings            = mv88e6xxx_get_strings,
 108         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
 109         .get_sset_count         = mv88e6xxx_get_sset_count,
 110         .adjust_link            = mv88e6xxx_adjust_link,
 111 #ifdef CONFIG_NET_DSA_HWMON
 112         .get_temp               = mv88e6xxx_get_temp,
 113 #endif
 114         .get_regs_len           = mv88e6xxx_get_regs_len,
 115         .get_regs               = mv88e6xxx_get_regs,
 116         .port_stp_update        = mv88e6xxx_port_stp_update,
 117         .port_pvid_get          = mv88e6xxx_port_pvid_get,
 118         .port_vlan_prepare      = mv88e6xxx_port_vlan_prepare,
 119         .port_vlan_add          = mv88e6xxx_port_vlan_add,
 120         .port_vlan_del          = mv88e6xxx_port_vlan_del,
 121         .vlan_getnext           = mv88e6xxx_vlan_getnext,
 122         .port_fdb_prepare       = mv88e6xxx_port_fdb_prepare,
 123         .port_fdb_add           = mv88e6xxx_port_fdb_add,
 124         .port_fdb_del           = mv88e6xxx_port_fdb_del,
 125         .port_fdb_dump          = mv88e6xxx_port_fdb_dump,
 126 };
 127
 128 MODULE_ALIAS("platform:mv88e6171");
 129 MODULE_ALIAS("platform:mv88e6175");
 130 MODULE_ALIAS("platform:mv88e6350");
 131 MODULE_ALIAS("platform:mv88e6351");