drivers/net/ucc_geth_mii.h

   1 /*
   2  * drivers/net/ucc_geth_mii.h
   3  *
   4  * QE UCC Gigabit Ethernet Driver -- MII Management Bus Implementation
   5  * Provides Bus interface for MII Management regs in the UCC register space
   6  *
   7  * Copyright (C) 2007 Freescale Semiconductor, Inc.
   8  *
   9  * Authors: Li Yang <leoli@freescale.com>
  10  *          Kim Phillips <kim.phillips@freescale.com>
  11  *
  12  * This program is free software; you can redistribute  it and/or modify it
  13  * under  the terms of  the GNU General  Public License as published by the
  14  * Free Software Foundation;  either version 2 of the  License, or (at your
  15  * option) any later version.
  16  *
  17  */
  18 #ifndef __UEC_MII_H
  19 #define __UEC_MII_H
  20
  21 /* UCC GETH MIIMCFG (MII Management Configuration Register) */
  22 #define MIIMCFG_RESET_MANAGEMENT                0x80000000      /* Reset
  23                                                                    management */
  24 #define MIIMCFG_NO_PREAMBLE                     0x00000010      /* Preamble
  25                                                                    suppress */
  26 #define MIIMCFG_CLOCK_DIVIDE_SHIFT              (31 - 31)       /* clock divide
  27                                                                    << shift */
  28 #define MIIMCFG_CLOCK_DIVIDE_MAX                0xf     /* max clock divide */
  29 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_2    0x00000000
  30 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_4    0x00000001
  31 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_6    0x00000002
  32 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_8    0x00000003
  33 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_10   0x00000004
  34 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_14   0x00000005
  35 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_16   0x00000008
  36 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_20   0x00000006
  37 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_28   0x00000007
  38 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_32   0x00000009
  39 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_48   0x0000000a
  40 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_64   0x0000000b
  41 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_80   0x0000000c
  42 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_112  0x0000000d
  43 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_160  0x0000000e
  44 #define MIIMCFG_MANAGEMENT_CLOCK_DIVIDE_BY_224  0x0000000f
  45
  46 /* UCC GETH MIIMCOM (MII Management Command Register) */
  47 #define MIIMCOM_SCAN_CYCLE                      0x00000002      /* Scan cycle */
  48 #define MIIMCOM_READ_CYCLE                      0x00000001      /* Read cycle */
  49
  50 /* UCC GETH MIIMADD (MII Management Address Register) */
  51 #define MIIMADD_PHY_ADDRESS_SHIFT               (31 - 23)       /* PHY Address
  52                                                                    << shift */
  53 #define MIIMADD_PHY_REGISTER_SHIFT              (31 - 31)       /* PHY Register
  54                                                                    << shift */
  55
  56 /* UCC GETH MIIMCON (MII Management Control Register) */
  57 #define MIIMCON_PHY_CONTROL_SHIFT               (31 - 31)       /* PHY Control
  58                                                                    << shift */
  59 #define MIIMCON_PHY_STATUS_SHIFT                (31 - 31)       /* PHY Status
  60                                                                    << shift */
  61
  62 /* UCC GETH MIIMIND (MII Management Indicator Register) */
  63 #define MIIMIND_NOT_VALID                       0x00000004      /* Not valid */
  64 #define MIIMIND_SCAN                            0x00000002      /* Scan in
  65                                                                    progress */
  66 #define MIIMIND_BUSY                            0x00000001
  67
  68 /* Initial TBI Physical Address */
  69 #define UTBIPAR_INIT_TBIPA                      0x1f
  70
  71 struct ucc_mii_mng {
  72         u32 miimcfg;            /* MII management configuration reg */
  73         u32 miimcom;            /* MII management command reg */
  74         u32 miimadd;            /* MII management address reg */
  75         u32 miimcon;            /* MII management control reg */
  76         u32 miimstat;           /* MII management status reg */
  77         u32 miimind;            /* MII management indication reg */
  78         u8 notcare[28];         /* Space holder */
  79         u32 utbipar;            /* TBI phy address reg */
  80 } __attribute__ ((packed));
  81
  82 /* TBI / MII Set Register */
  83 enum enet_tbi_mii_reg {
  84         ENET_TBI_MII_CR = 0x00, /* Control */
  85         ENET_TBI_MII_SR = 0x01, /* Status */
  86         ENET_TBI_MII_ANA = 0x04,        /* AN advertisement */
  87         ENET_TBI_MII_ANLPBPA = 0x05,    /* AN link partner base page ability */
  88         ENET_TBI_MII_ANEX = 0x06,       /* AN expansion */
  89         ENET_TBI_MII_ANNPT = 0x07,      /* AN next page transmit */
  90         ENET_TBI_MII_ANLPANP = 0x08,    /* AN link partner ability next page */
  91         ENET_TBI_MII_EXST = 0x0F,       /* Extended status */
  92         ENET_TBI_MII_JD = 0x10, /* Jitter diagnostics */
  93         ENET_TBI_MII_TBICON = 0x11      /* TBI control */
  94 };
  95
  96 int uec_mdio_read(struct mii_bus *bus, int mii_id, int regnum);
  97 int uec_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value);
  98 int __init uec_mdio_init(void);
  99 void __exit uec_mdio_exit(void);
 100 #endif                          /* __UEC_MII_H */