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_drv_probe(struct device *dsa_dev,
  33                                  struct device *host_dev,
  34                                  int sw_addr, void **priv)
  35 {
  36         return mv88e6xxx_drv_probe(dsa_dev, host_dev, sw_addr, priv,
  37                                    mv88e6123_table,
  38                                    ARRAY_SIZE(mv88e6123_table));
  39 }
  40
  41 static int mv88e6123_setup_global(struct dsa_switch *ds)
  42 {
  43         u32 upstream_port = dsa_upstream_port(ds);
  44         int ret;
  45         u32 reg;
  46
  47         ret = mv88e6xxx_setup_global(ds);
  48         if (ret)
  49                 return ret;
  50
  51         /* Disable the PHY polling unit (since there won't be any
  52          * external PHYs to poll), don't discard packets with
  53          * excessive collisions, and mask all interrupt sources.
  54          */
  55         ret = mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_CONTROL, 0x0000);
  56         if (ret)
  57                 return ret;
  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         ret = mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  67         if (ret)
  68                 return ret;
  69
  70         /* Disable remote management for now, and set the switch's
  71          * DSA device number.
  72          */
  73         return mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_CONTROL_2,
  74                                    ds->index & 0x1f);
  75 }
  76
  77 static int mv88e6123_setup(struct dsa_switch *ds)
  78 {
  79         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  80         int ret;
  81
  82         ps->ds = ds;
  83
  84         ret = mv88e6xxx_setup_common(ds);
  85         if (ret < 0)
  86                 return ret;
  87
  88         switch (ps->id) {
  89         case PORT_SWITCH_ID_6123:
  90                 ps->num_ports = 3;
  91                 break;
  92         case PORT_SWITCH_ID_6161:
  93         case PORT_SWITCH_ID_6165:
  94                 ps->num_ports = 6;
  95                 break;
  96         default:
  97                 return -ENODEV;
  98         }
  99
 100         ret = mv88e6xxx_switch_reset(ds, false);
 101         if (ret < 0)
 102                 return ret;
 103
 104         ret = mv88e6123_setup_global(ds);
 105         if (ret < 0)
 106                 return ret;
 107
 108         return mv88e6xxx_setup_ports(ds);
 109 }
 110
 111 struct dsa_switch_driver mv88e6123_switch_driver = {
 112         .tag_protocol           = DSA_TAG_PROTO_EDSA,
 113         .probe                  = mv88e6123_drv_probe,
 114         .setup                  = mv88e6123_setup,
 115         .set_addr               = mv88e6xxx_set_addr_indirect,
 116         .phy_read               = mv88e6xxx_phy_read,
 117         .phy_write              = mv88e6xxx_phy_write,
 118         .get_strings            = mv88e6xxx_get_strings,
 119         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
 120         .get_sset_count         = mv88e6xxx_get_sset_count,
 121         .adjust_link            = mv88e6xxx_adjust_link,
 122 #ifdef CONFIG_NET_DSA_HWMON
 123         .get_temp               = mv88e6xxx_get_temp,
 124 #endif
 125         .get_regs_len           = mv88e6xxx_get_regs_len,
 126         .get_regs               = mv88e6xxx_get_regs,
 127 };
 128
 129 MODULE_ALIAS("platform:mv88e6123");
 130 MODULE_ALIAS("platform:mv88e6161");
 131 MODULE_ALIAS("platform:mv88e6165");