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_info mv88e6123_table[] = {
  21         {
  22                 .prod_num = PORT_SWITCH_ID_PROD_NUM_6123,
  23                 .name = "Marvell 88E6123",
  24         }, {
  25                 .prod_num = PORT_SWITCH_ID_PROD_NUM_6161,
  26                 .name = "Marvell 88E6161",
  27         }, {
  28                 .prod_num = PORT_SWITCH_ID_PROD_NUM_6165,
  29                 .name = "Marvell 88E6165",
  30         }
  31 };
  32
  33 static const char *mv88e6123_drv_probe(struct device *dsa_dev,
  34                                        struct device *host_dev, int sw_addr,
  35                                        void **priv)
  36 {
  37         return mv88e6xxx_drv_probe(dsa_dev, host_dev, sw_addr, priv,
  38                                    mv88e6123_table,
  39                                    ARRAY_SIZE(mv88e6123_table));
  40 }
  41
  42 static int mv88e6123_setup_global(struct dsa_switch *ds)
  43 {
  44         u32 upstream_port = dsa_upstream_port(ds);
  45         int ret;
  46         u32 reg;
  47
  48         ret = mv88e6xxx_setup_global(ds);
  49         if (ret)
  50                 return ret;
  51
  52         /* Disable the PHY polling unit (since there won't be any
  53          * external PHYs to poll), don't discard packets with
  54          * excessive collisions, and mask all interrupt sources.
  55          */
  56         ret = mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_CONTROL, 0x0000);
  57         if (ret)
  58                 return ret;
  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         ret = mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg);
  68         if (ret)
  69                 return ret;
  70
  71         /* Disable remote management for now, and set the switch's
  72          * DSA device number.
  73          */
  74         return mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_CONTROL_2,
  75                                    ds->index & 0x1f);
  76 }
  77
  78 static int mv88e6123_setup(struct dsa_switch *ds)
  79 {
  80         struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
  81         int ret;
  82
  83         ret = mv88e6xxx_setup_common(ds);
  84         if (ret < 0)
  85                 return ret;
  86
  87         switch (ps->id) {
  88         case PORT_SWITCH_ID_6123:
  89                 ps->num_ports = 3;
  90                 break;
  91         case PORT_SWITCH_ID_6161:
  92         case PORT_SWITCH_ID_6165:
  93                 ps->num_ports = 6;
  94                 break;
  95         default:
  96                 return -ENODEV;
  97         }
  98
  99         ret = mv88e6xxx_switch_reset(ds, false);
 100         if (ret < 0)
 101                 return ret;
 102
 103         ret = mv88e6123_setup_global(ds);
 104         if (ret < 0)
 105                 return ret;
 106
 107         return mv88e6xxx_setup_ports(ds);
 108 }
 109
 110 struct dsa_switch_driver mv88e6123_switch_driver = {
 111         .tag_protocol           = DSA_TAG_PROTO_EDSA,
 112         .probe                  = mv88e6123_drv_probe,
 113         .setup                  = mv88e6123_setup,
 114         .set_addr               = mv88e6xxx_set_addr_indirect,
 115         .phy_read               = mv88e6xxx_phy_read,
 116         .phy_write              = mv88e6xxx_phy_write,
 117         .get_strings            = mv88e6xxx_get_strings,
 118         .get_ethtool_stats      = mv88e6xxx_get_ethtool_stats,
 119         .get_sset_count         = mv88e6xxx_get_sset_count,
 120         .adjust_link            = mv88e6xxx_adjust_link,
 121 #ifdef CONFIG_NET_DSA_HWMON
 122         .get_temp               = mv88e6xxx_get_temp,
 123 #endif
 124         .get_regs_len           = mv88e6xxx_get_regs_len,
 125         .get_regs               = mv88e6xxx_get_regs,
 126 };
 127
 128 MODULE_ALIAS("platform:mv88e6123");
 129 MODULE_ALIAS("platform:mv88e6161");
 130 MODULE_ALIAS("platform:mv88e6165");