drivers/net/dsa/mv88e6123.c

   1 /*
   2  * net/dsa/mv88e6123_61_65.c - Marvell 88e6123/6161/6165 switch chip support
   3  * Copyright (c) 2008-2009 Marvell Semiconductor
   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 mv88e6123_table[] = {
  21         { PORT_SWITCH_ID_6123, "Marvell 88E6123" },
  22         { PORT_SWITCH_ID_6123_A1, "Marvell 88E6123 (A1)" },
  23         { PORT_SWITCH_ID_6123_A2, "Marvell 88E6123 (A2)" },
  24         { PORT_SWITCH_ID_6161, "Marvell 88E6161" },
  25         { PORT_SWITCH_ID_6161_A1, "Marvell 88E6161 (A1)" },
  26         { PORT_SWITCH_ID_6161_A2, "Marvell 88E6161 (A2)" },
  27         { PORT_SWITCH_ID_6165, "Marvell 88E6165" },
  28         { PORT_SWITCH_ID_6165_A1, "Marvell 88E6165 (A1)" },
  29         { PORT_SWITCH_ID_6165_A2, "Marvell 88e6165 (A2)" },
  30 };
  31
  32 static char *mv88e6123_probe(struct device *dsa_dev, struct device *host_dev,
  33                              int sw_addr)
  34 {
  35         return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6123_table,
  36                                      ARRAY_SIZE(mv88e6123_table));
  37 }
  38
  39 static int mv88e6123_setup_global(struct dsa_switch *ds)
  40 {
  41         u32 upstream_port = dsa_upstream_port(ds);
  42         int ret;
  43         u32 reg;
  44
  45         ret = mv88e6xxx_setup_global(ds);
  46         if (ret)
  47                 return ret;
  48
  49         /* Disable the PHY polling unit (since there won't be any
  50          * external PHYs to poll), don't discard packets with
  51          * excessive collisions, and mask all interrupt sources.
  52          */
  53         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, 0x0000);
  54
  55         /* Configure the upstream port, and configure the upstream
  56          * port as the port to which ingress and egress monitor frames
  57          * are to be sent.
  58          */
  59         reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT |
  60                 upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT |
  61                 upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT;
  62         REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  63
  64         /* Disable remote management for now, and set the switch's
  65          * DSA device number.
  66          */
  67         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL_2, ds->index & 0x1f);
  68
  69         return 0;
  70 }
  71
  72 static int mv88e6123_setup(struct dsa_switch *ds)
  73 {
  74         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  75         int ret;
  76
  77         ret = mv88e6xxx_setup_common(ds);
  78         if (ret < 0)
  79                 return ret;
  80
  81         switch (ps->id) {
  82         case PORT_SWITCH_ID_6123:
  83                 ps->num_ports = 3;
  84                 break;
  85         case PORT_SWITCH_ID_6161:
  86         case PORT_SWITCH_ID_6165:
  87                 ps->num_ports = 6;
  88                 break;
  89         default:
  90                 return -ENODEV;
  91         }
  92
  93         ret = mv88e6xxx_switch_reset(ds, false);
  94         if (ret < 0)
  95                 return ret;
  96
  97         ret = mv88e6123_setup_global(ds);
  98         if (ret < 0)
  99                 return ret;
 100
 101         return mv88e6xxx_setup_ports(ds);
 102 }
 103
 104 struct dsa_switch_driver mv88e6123_switch_driver = {
 105         .tag_protocol           = DSA_TAG_PROTO_EDSA,
 106         .priv_size              = sizeof(struct mv88e6xxx_priv_state),
 107         .probe                  = mv88e6123_probe,
 108         .setup                  = mv88e6123_setup,
 109         .set_addr               = mv88e6xxx_set_addr_indirect,
 110         .phy_read               = mv88e6xxx_phy_read,
 111         .phy_write              = mv88e6xxx_phy_write,
 112         .get_strings            = mv88e6xxx_get_strings,
 113         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
 114         .get_sset_count         = mv88e6xxx_get_sset_count,
 115         .adjust_link            = mv88e6xxx_adjust_link,
 116 #ifdef CONFIG_NET_DSA_HWMON
 117         .get_temp               = mv88e6xxx_get_temp,
 118 #endif
 119         .get_regs_len           = mv88e6xxx_get_regs_len,
 120         .get_regs               = mv88e6xxx_get_regs,
 121 };
 122
 123 MODULE_ALIAS("platform:mv88e6123");
 124 MODULE_ALIAS("platform:mv88e6161");
 125 MODULE_ALIAS("platform:mv88e6165");