net/dsa/mv88e6xxx.h

   1 /*
   2  * net/dsa/mv88e6xxx.h - Marvell 88e6xxx switch chip support
   3  * Copyright (c) 2008 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 #ifndef __MV88E6XXX_H
  12 #define __MV88E6XXX_H
  13
  14 #define REG_PORT(p)             (0x10 + (p))
  15 #define REG_GLOBAL              0x1b
  16 #define REG_GLOBAL2             0x1c
  17
  18 struct mv88e6xxx_priv_state {
  19         /*
  20          * When using multi-chip addressing, this mutex protects
  21          * access to the indirect access registers.  (In single-chip
  22          * mode, this mutex is effectively useless.)
  23          */
  24         struct mutex    smi_mutex;
  25
  26 #ifdef CONFIG_NET_DSA_MV88E6XXX_NEED_PPU
  27         /*
  28          * Handles automatic disabling and re-enabling of the PHY
  29          * polling unit.
  30          */
  31         struct mutex            ppu_mutex;
  32         int                     ppu_disabled;
  33         struct work_struct      ppu_work;
  34         struct timer_list       ppu_timer;
  35 #endif
  36
  37         /*
  38          * This mutex serialises access to the statistics unit.
  39          * Hold this mutex over snapshot + dump sequences.
  40          */
  41         struct mutex    stats_mutex;
  42
  43         int             id; /* switch product id */
  44 };
  45
  46 struct mv88e6xxx_hw_stat {
  47         char string[ETH_GSTRING_LEN];
  48         int sizeof_stat;
  49         int reg;
  50 };
  51
  52 int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
  53 int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);
  54 int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
  55                           int reg, u16 val);
  56 int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val);
  57 int mv88e6xxx_config_prio(struct dsa_switch *ds);
  58 int mv88e6xxx_set_addr_direct(struct dsa_switch *ds, u8 *addr);
  59 int mv88e6xxx_set_addr_indirect(struct dsa_switch *ds, u8 *addr);
  60 int mv88e6xxx_phy_read(struct dsa_switch *ds, int addr, int regnum);
  61 int mv88e6xxx_phy_write(struct dsa_switch *ds, int addr, int regnum, u16 val);
  62 void mv88e6xxx_ppu_state_init(struct dsa_switch *ds);
  63 int mv88e6xxx_phy_read_ppu(struct dsa_switch *ds, int addr, int regnum);
  64 int mv88e6xxx_phy_write_ppu(struct dsa_switch *ds, int addr,
  65                             int regnum, u16 val);
  66 void mv88e6xxx_poll_link(struct dsa_switch *ds);
  67 void mv88e6xxx_get_strings(struct dsa_switch *ds,
  68                            int nr_stats, struct mv88e6xxx_hw_stat *stats,
  69                            int port, uint8_t *data);
  70 void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
  71                                  int nr_stats, struct mv88e6xxx_hw_stat *stats,
  72                                  int port, uint64_t *data);
  73
  74 #define REG_READ(addr, reg)                                             \
  75         ({                                                              \
  76                 int __ret;                                              \
  77                                                                         \
  78                 __ret = mv88e6xxx_reg_read(ds, addr, reg);              \
  79                 if (__ret < 0)                                          \
  80                         return __ret;                                   \
  81                 __ret;                                                  \
  82         })
  83
  84 #define REG_WRITE(addr, reg, val)                                       \
  85         ({                                                              \
  86                 int __ret;                                              \
  87                                                                         \
  88                 __ret = mv88e6xxx_reg_write(ds, addr, reg, val);        \
  89                 if (__ret < 0)                                          \
  90                         return __ret;                                   \
  91         })
  92
  93
  94
  95 #endif