drivers/net/phy/mdio-xgene.h

   1 /* Applied Micro X-Gene SoC MDIO Driver
   2  *
   3  * Copyright (c) 2016, Applied Micro Circuits Corporation
   4  * Author: Iyappan Subramanian <isubramanian@apm.com>
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef __MDIO_XGENE_H__
  21 #define __MDIO_XGENE_H__
  22
  23 #define BLOCK_XG_MDIO_CSR_OFFSET        0x5000
  24 #define BLOCK_DIAG_CSR_OFFSET           0xd000
  25 #define XGENET_CONFIG_REG_ADDR          0x20
  26
  27 #define MAC_ADDR_REG_OFFSET             0x00
  28 #define MAC_COMMAND_REG_OFFSET          0x04
  29 #define MAC_WRITE_REG_OFFSET            0x08
  30 #define MAC_READ_REG_OFFSET             0x0c
  31 #define MAC_COMMAND_DONE_REG_OFFSET     0x10
  32
  33 #define CLKEN_OFFSET                    0x08
  34 #define SRST_OFFSET                     0x00
  35
  36 #define MENET_CFG_MEM_RAM_SHUTDOWN_ADDR 0x70
  37 #define MENET_BLOCK_MEM_RDY_ADDR        0x74
  38
  39 #define MAC_CONFIG_1_ADDR               0x00
  40 #define MII_MGMT_COMMAND_ADDR           0x24
  41 #define MII_MGMT_ADDRESS_ADDR           0x28
  42 #define MII_MGMT_CONTROL_ADDR           0x2c
  43 #define MII_MGMT_STATUS_ADDR            0x30
  44 #define MII_MGMT_INDICATORS_ADDR        0x34
  45 #define SOFT_RESET                      BIT(31)
  46
  47 #define MII_MGMT_CONFIG_ADDR            0x20
  48 #define MII_MGMT_COMMAND_ADDR           0x24
  49 #define MII_MGMT_ADDRESS_ADDR           0x28
  50 #define MII_MGMT_CONTROL_ADDR           0x2c
  51 #define MII_MGMT_STATUS_ADDR            0x30
  52 #define MII_MGMT_INDICATORS_ADDR        0x34
  53
  54 #define MIIM_COMMAND_ADDR               0x20
  55 #define MIIM_FIELD_ADDR                 0x24
  56 #define MIIM_CONFIGURATION_ADDR         0x28
  57 #define MIIM_LINKFAILVECTOR_ADDR        0x2c
  58 #define MIIM_INDICATOR_ADDR             0x30
  59 #define MIIMRD_FIELD_ADDR               0x34
  60
  61 #define MDIO_CSR_OFFSET                 0x5000
  62
  63 #define REG_ADDR_POS                    0
  64 #define REG_ADDR_LEN                    5
  65 #define PHY_ADDR_POS                    8
  66 #define PHY_ADDR_LEN                    5
  67
  68 #define HSTMIIMWRDAT_POS                0
  69 #define HSTMIIMWRDAT_LEN                16
  70 #define HSTPHYADX_POS                   23
  71 #define HSTPHYADX_LEN                   5
  72 #define HSTREGADX_POS                   18
  73 #define HSTREGADX_LEN                   5
  74 #define HSTLDCMD                        BIT(3)
  75 #define HSTMIIMCMD_POS                  0
  76 #define HSTMIIMCMD_LEN                  3
  77
  78 #define BUSY_MASK                       BIT(0)
  79 #define READ_CYCLE_MASK                 BIT(0)
  80
  81 enum xgene_enet_cmd {
  82         XGENE_ENET_WR_CMD = BIT(31),
  83         XGENE_ENET_RD_CMD = BIT(30)
  84 };
  85
  86 enum {
  87         MIIM_CMD_IDLE,
  88         MIIM_CMD_LEGACY_WRITE,
  89         MIIM_CMD_LEGACY_READ,
  90 };
  91
  92 enum xgene_mdio_id {
  93         XGENE_MDIO_RGMII = 1,
  94         XGENE_MDIO_XFI
  95 };
  96
  97 struct xgene_mdio_pdata {
  98         struct clk *clk;
  99         struct device *dev;
 100         void __iomem *mac_csr_addr;
 101         void __iomem *diag_csr_addr;
 102         void __iomem *mdio_csr_addr;
 103         struct mii_bus *mdio_bus;
 104         int mdio_id;
 105 };
 106
 107 /* Set the specified value into a bit-field defined by its starting position
 108  * and length within a single u64.
 109  */
 110 static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val)
 111 {
 112         return (val & ((1ULL << len) - 1)) << pos;
 113 }
 114
 115 #define SET_VAL(field, val) \
 116                 xgene_enet_set_field_value(field ## _POS, field ## _LEN, val)
 117
 118 #define SET_BIT(field) \
 119                 xgene_enet_set_field_value(field ## _POS, 1, 1)
 120
 121 /* Get the value from a bit-field defined by its starting position
 122  * and length within the specified u64.
 123  */
 124 static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src)
 125 {
 126         return (src >> pos) & ((1ULL << len) - 1);
 127 }
 128
 129 #define GET_VAL(field, src) \
 130                 xgene_enet_get_field_value(field ## _POS, field ## _LEN, src)
 131
 132 #define GET_BIT(field, src) \
 133                 xgene_enet_get_field_value(field ## _POS, 1, src)
 134
 135 int xgene_mdio_rgmii_read(struct mii_bus *bus, int phy_id, int reg);
 136 int xgene_mdio_rgmii_write(struct mii_bus *bus, int phy_id, int reg, u16 data);
 137 struct phy_device *xgene_enet_phy_register(struct mii_bus *bus, int phy_addr);
 138
 139 #endif  /* __MDIO_XGENE_H__ */