drivers/net/phy/mdio-cavium.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2009-2016 Cavium, Inc.
   7  */
   8
   9 enum cavium_mdiobus_mode {
  10         UNINIT = 0,
  11         C22,
  12         C45
  13 };
  14
  15 #define SMI_CMD         0x0
  16 #define SMI_WR_DAT      0x8
  17 #define SMI_RD_DAT      0x10
  18 #define SMI_CLK         0x18
  19 #define SMI_EN          0x20
  20
  21 #ifdef __BIG_ENDIAN_BITFIELD
  22 #define OCT_MDIO_BITFIELD_FIELD(field, more)    \
  23         field;                                  \
  24         more
  25
  26 #else
  27 #define OCT_MDIO_BITFIELD_FIELD(field, more)    \
  28         more                                    \
  29         field;
  30
  31 #endif
  32
  33 union cvmx_smix_clk {
  34         u64 u64;
  35         struct cvmx_smix_clk_s {
  36           OCT_MDIO_BITFIELD_FIELD(u64 reserved_25_63:39,
  37           OCT_MDIO_BITFIELD_FIELD(u64 mode:1,
  38           OCT_MDIO_BITFIELD_FIELD(u64 reserved_21_23:3,
  39           OCT_MDIO_BITFIELD_FIELD(u64 sample_hi:5,
  40           OCT_MDIO_BITFIELD_FIELD(u64 sample_mode:1,
  41           OCT_MDIO_BITFIELD_FIELD(u64 reserved_14_14:1,
  42           OCT_MDIO_BITFIELD_FIELD(u64 clk_idle:1,
  43           OCT_MDIO_BITFIELD_FIELD(u64 preamble:1,
  44           OCT_MDIO_BITFIELD_FIELD(u64 sample:4,
  45           OCT_MDIO_BITFIELD_FIELD(u64 phase:8,
  46           ;))))))))))
  47         } s;
  48 };
  49
  50 union cvmx_smix_cmd {
  51         u64 u64;
  52         struct cvmx_smix_cmd_s {
  53           OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
  54           OCT_MDIO_BITFIELD_FIELD(u64 phy_op:2,
  55           OCT_MDIO_BITFIELD_FIELD(u64 reserved_13_15:3,
  56           OCT_MDIO_BITFIELD_FIELD(u64 phy_adr:5,
  57           OCT_MDIO_BITFIELD_FIELD(u64 reserved_5_7:3,
  58           OCT_MDIO_BITFIELD_FIELD(u64 reg_adr:5,
  59           ;))))))
  60         } s;
  61 };
  62
  63 union cvmx_smix_en {
  64         u64 u64;
  65         struct cvmx_smix_en_s {
  66           OCT_MDIO_BITFIELD_FIELD(u64 reserved_1_63:63,
  67           OCT_MDIO_BITFIELD_FIELD(u64 en:1,
  68           ;))
  69         } s;
  70 };
  71
  72 union cvmx_smix_rd_dat {
  73         u64 u64;
  74         struct cvmx_smix_rd_dat_s {
  75           OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
  76           OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
  77           OCT_MDIO_BITFIELD_FIELD(u64 val:1,
  78           OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
  79           ;))))
  80         } s;
  81 };
  82
  83 union cvmx_smix_wr_dat {
  84         u64 u64;
  85         struct cvmx_smix_wr_dat_s {
  86           OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
  87           OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
  88           OCT_MDIO_BITFIELD_FIELD(u64 val:1,
  89           OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
  90           ;))))
  91         } s;
  92 };
  93
  94 struct cavium_mdiobus {
  95         struct mii_bus *mii_bus;
  96         u64 register_base;
  97         enum cavium_mdiobus_mode mode;
  98 };
  99
 100 #ifdef CONFIG_CAVIUM_OCTEON_SOC
 101
 102 #include <asm/octeon/octeon.h>
 103
 104 static inline void oct_mdio_writeq(u64 val, u64 addr)
 105 {
 106         cvmx_write_csr(addr, val);
 107 }
 108
 109 static inline u64 oct_mdio_readq(u64 addr)
 110 {
 111         return cvmx_read_csr(addr);
 112 }
 113 #else
 114 #define oct_mdio_writeq(val, addr)      writeq(val, (void *)addr)
 115 #define oct_mdio_readq(addr)            readq((void *)addr)
 116 #endif
 117
 118 int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum);
 119 int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val);