drivers/net/phy/mdio-xgene.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /* Applied Micro X-Gene SoC MDIO Driver
   3  *
   4  * Copyright (c) 2016, Applied Micro Circuits Corporation
   5  * Author: Iyappan Subramanian <isubramanian@apm.com>
   6  */
   7
   8 #ifndef __MDIO_XGENE_H__
   9 #define __MDIO_XGENE_H__
  10
  11 #define BLOCK_XG_MDIO_CSR_OFFSET        0x5000
  12 #define BLOCK_DIAG_CSR_OFFSET           0xd000
  13 #define XGENET_CONFIG_REG_ADDR          0x20
  14
  15 #define MAC_ADDR_REG_OFFSET             0x00
  16 #define MAC_COMMAND_REG_OFFSET          0x04
  17 #define MAC_WRITE_REG_OFFSET            0x08
  18 #define MAC_READ_REG_OFFSET             0x0c
  19 #define MAC_COMMAND_DONE_REG_OFFSET     0x10
  20
  21 #define CLKEN_OFFSET                    0x08
  22 #define SRST_OFFSET                     0x00
  23
  24 #define MENET_CFG_MEM_RAM_SHUTDOWN_ADDR 0x70
  25 #define MENET_BLOCK_MEM_RDY_ADDR        0x74
  26
  27 #define MAC_CONFIG_1_ADDR               0x00
  28 #define MII_MGMT_COMMAND_ADDR           0x24
  29 #define MII_MGMT_ADDRESS_ADDR           0x28
  30 #define MII_MGMT_CONTROL_ADDR           0x2c
  31 #define MII_MGMT_STATUS_ADDR            0x30
  32 #define MII_MGMT_INDICATORS_ADDR        0x34
  33 #define SOFT_RESET                      BIT(31)
  34
  35 #define MII_MGMT_CONFIG_ADDR            0x20
  36 #define MII_MGMT_COMMAND_ADDR           0x24
  37 #define MII_MGMT_ADDRESS_ADDR           0x28
  38 #define MII_MGMT_CONTROL_ADDR           0x2c
  39 #define MII_MGMT_STATUS_ADDR            0x30
  40 #define MII_MGMT_INDICATORS_ADDR        0x34
  41
  42 #define MIIM_COMMAND_ADDR               0x20
  43 #define MIIM_FIELD_ADDR                 0x24
  44 #define MIIM_CONFIGURATION_ADDR         0x28
  45 #define MIIM_LINKFAILVECTOR_ADDR        0x2c
  46 #define MIIM_INDICATOR_ADDR             0x30
  47 #define MIIMRD_FIELD_ADDR               0x34
  48
  49 #define MDIO_CSR_OFFSET                 0x5000
  50
  51 #define REG_ADDR_POS                    0
  52 #define REG_ADDR_LEN                    5
  53 #define PHY_ADDR_POS                    8
  54 #define PHY_ADDR_LEN                    5
  55
  56 #define HSTMIIMWRDAT_POS                0
  57 #define HSTMIIMWRDAT_LEN                16
  58 #define HSTPHYADX_POS                   23
  59 #define HSTPHYADX_LEN                   5
  60 #define HSTREGADX_POS                   18
  61 #define HSTREGADX_LEN                   5
  62 #define HSTLDCMD                        BIT(3)
  63 #define HSTMIIMCMD_POS                  0
  64 #define HSTMIIMCMD_LEN                  3
  65
  66 #define BUSY_MASK                       BIT(0)
  67 #define READ_CYCLE_MASK                 BIT(0)
  68
  69 enum xgene_enet_cmd {
  70         XGENE_ENET_WR_CMD = BIT(31),
  71         XGENE_ENET_RD_CMD = BIT(30)
  72 };
  73
  74 enum {
  75         MIIM_CMD_IDLE,
  76         MIIM_CMD_LEGACY_WRITE,
  77         MIIM_CMD_LEGACY_READ,
  78 };
  79
  80 enum xgene_mdio_id {
  81         XGENE_MDIO_RGMII = 1,
  82         XGENE_MDIO_XFI
  83 };
  84
  85 struct xgene_mdio_pdata {
  86         struct clk *clk;
  87         struct device *dev;
  88         void __iomem *mac_csr_addr;
  89         void __iomem *diag_csr_addr;
  90         void __iomem *mdio_csr_addr;
  91         struct mii_bus *mdio_bus;
  92         int mdio_id;
  93         spinlock_t mac_lock; /* mac lock */
  94 };
  95
  96 /* Set the specified value into a bit-field defined by its starting position
  97  * and length within a single u64.
  98  */
  99 static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val)
 100 {
 101         return (val & ((1ULL << len) - 1)) << pos;
 102 }
 103
 104 #define SET_VAL(field, val) \
 105                 xgene_enet_set_field_value(field ## _POS, field ## _LEN, val)
 106
 107 #define SET_BIT(field) \
 108                 xgene_enet_set_field_value(field ## _POS, 1, 1)
 109
 110 /* Get the value from a bit-field defined by its starting position
 111  * and length within the specified u64.
 112  */
 113 static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src)
 114 {
 115         return (src >> pos) & ((1ULL << len) - 1);
 116 }
 117
 118 #define GET_VAL(field, src) \
 119                 xgene_enet_get_field_value(field ## _POS, field ## _LEN, src)
 120
 121 #define GET_BIT(field, src) \
 122                 xgene_enet_get_field_value(field ## _POS, 1, src)
 123
 124 u32 xgene_mdio_rd_mac(struct xgene_mdio_pdata *pdata, u32 rd_addr);
 125 void xgene_mdio_wr_mac(struct xgene_mdio_pdata *pdata, u32 wr_addr, u32 data);
 126 int xgene_mdio_rgmii_read(struct mii_bus *bus, int phy_id, int reg);
 127 int xgene_mdio_rgmii_write(struct mii_bus *bus, int phy_id, int reg, u16 data);
 128 struct phy_device *xgene_enet_phy_register(struct mii_bus *bus, int phy_addr);
 129
 130 #endif  /* __MDIO_XGENE_H__ */