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/* Applied Micro X-Gene SoC MDIO Driver
*
* Copyright (c) 2016, Applied Micro Circuits Corporation
* Author: Iyappan Subramanian <isubramanian@apm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MDIO_XGENE_H__
#define __MDIO_XGENE_H__
#define BLOCK_XG_MDIO_CSR_OFFSET 0x5000
#define BLOCK_DIAG_CSR_OFFSET 0xd000
#define XGENET_CONFIG_REG_ADDR 0x20
#define MAC_ADDR_REG_OFFSET 0x00
#define MAC_COMMAND_REG_OFFSET 0x04
#define MAC_WRITE_REG_OFFSET 0x08
#define MAC_READ_REG_OFFSET 0x0c
#define MAC_COMMAND_DONE_REG_OFFSET 0x10
#define CLKEN_OFFSET 0x08
#define SRST_OFFSET 0x00
#define MENET_CFG_MEM_RAM_SHUTDOWN_ADDR 0x70
#define MENET_BLOCK_MEM_RDY_ADDR 0x74
#define MAC_CONFIG_1_ADDR 0x00
#define MII_MGMT_COMMAND_ADDR 0x24
#define MII_MGMT_ADDRESS_ADDR 0x28
#define MII_MGMT_CONTROL_ADDR 0x2c
#define MII_MGMT_STATUS_ADDR 0x30
#define MII_MGMT_INDICATORS_ADDR 0x34
#define SOFT_RESET BIT(31)
#define MII_MGMT_CONFIG_ADDR 0x20
#define MII_MGMT_COMMAND_ADDR 0x24
#define MII_MGMT_ADDRESS_ADDR 0x28
#define MII_MGMT_CONTROL_ADDR 0x2c
#define MII_MGMT_STATUS_ADDR 0x30
#define MII_MGMT_INDICATORS_ADDR 0x34
#define MIIM_COMMAND_ADDR 0x20
#define MIIM_FIELD_ADDR 0x24
#define MIIM_CONFIGURATION_ADDR 0x28
#define MIIM_LINKFAILVECTOR_ADDR 0x2c
#define MIIM_INDICATOR_ADDR 0x30
#define MIIMRD_FIELD_ADDR 0x34
#define MDIO_CSR_OFFSET 0x5000
#define REG_ADDR_POS 0
#define REG_ADDR_LEN 5
#define PHY_ADDR_POS 8
#define PHY_ADDR_LEN 5
#define HSTMIIMWRDAT_POS 0
#define HSTMIIMWRDAT_LEN 16
#define HSTPHYADX_POS 23
#define HSTPHYADX_LEN 5
#define HSTREGADX_POS 18
#define HSTREGADX_LEN 5
#define HSTLDCMD BIT(3)
#define HSTMIIMCMD_POS 0
#define HSTMIIMCMD_LEN 3
#define BUSY_MASK BIT(0)
#define READ_CYCLE_MASK BIT(0)
enum xgene_enet_cmd {
XGENE_ENET_WR_CMD = BIT(31),
XGENE_ENET_RD_CMD = BIT(30)
};
enum {
MIIM_CMD_IDLE,
MIIM_CMD_LEGACY_WRITE,
MIIM_CMD_LEGACY_READ,
};
enum xgene_mdio_id {
XGENE_MDIO_RGMII = 1,
XGENE_MDIO_XFI
};
struct xgene_mdio_pdata {
struct clk *clk;
struct device *dev;
void __iomem *mac_csr_addr;
void __iomem *diag_csr_addr;
void __iomem *mdio_csr_addr;
struct mii_bus *mdio_bus;
int mdio_id;
spinlock_t mac_lock; /* mac lock */
};
/* Set the specified value into a bit-field defined by its starting position
* and length within a single u64.
*/
static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val)
{
return (val & ((1ULL << len) - 1)) << pos;
}
#define SET_VAL(field, val) \
xgene_enet_set_field_value(field ## _POS, field ## _LEN, val)
#define SET_BIT(field) \
xgene_enet_set_field_value(field ## _POS, 1, 1)
/* Get the value from a bit-field defined by its starting position
* and length within the specified u64.
*/
static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src)
{
return (src >> pos) & ((1ULL << len) - 1);
}
#define GET_VAL(field, src) \
xgene_enet_get_field_value(field ## _POS, field ## _LEN, src)
#define GET_BIT(field, src) \
xgene_enet_get_field_value(field ## _POS, 1, src)
u32 xgene_mdio_rd_mac(struct xgene_mdio_pdata *pdata, u32 rd_addr);
void xgene_mdio_wr_mac(struct xgene_mdio_pdata *pdata, u32 wr_addr, u32 data);
int xgene_mdio_rgmii_read(struct mii_bus *bus, int phy_id, int reg);
int xgene_mdio_rgmii_write(struct mii_bus *bus, int phy_id, int reg, u16 data);
struct phy_device *xgene_enet_phy_register(struct mii_bus *bus, int phy_addr);
#endif /* __MDIO_XGENE_H__ */
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