1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (C) 2009-2016 Cavium, Inc.
11 #include "mdio-cavium.h"
18 	if (m == p->mode)  in cavium_mdiobus_set_mode()
21 	smi_clk.u64 = oct_mdio_readq(p->register_base + SMI_CLK);  in cavium_mdiobus_set_mode()
24 	oct_mdio_writeq(smi_clk.u64, p->register_base + SMI_CLK);  in cavium_mdiobus_set_mode()
25 	p->mode = m;  in cavium_mdiobus_set_mode()
39 	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);  in cavium_mdiobus_c45_addr()
45 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);  in cavium_mdiobus_c45_addr()
52 		smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);  in cavium_mdiobus_c45_addr()
53 	} while (smi_wr.s.pending && --timeout);  in cavium_mdiobus_c45_addr()
56 		return -EIO;  in cavium_mdiobus_c45_addr()
62 	struct cavium_mdiobus *p = bus->priv;  in cavium_mdiobus_read_c22()
67 	cavium_mdiobus_set_mode(p, C22);  in cavium_mdiobus_read_c22()
73 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);  in cavium_mdiobus_read_c22()
80 		smi_rd.u64 = oct_mdio_readq(p->register_base + SMI_RD_DAT);  in cavium_mdiobus_read_c22()
81 	} while (smi_rd.s.pending && --timeout);  in cavium_mdiobus_read_c22()
86 		return -EIO;  in cavium_mdiobus_read_c22()
93 	struct cavium_mdiobus *p = bus->priv;  in cavium_mdiobus_read_c45()
104 	smi_cmd.s.phy_op = 3; /* MDIO_CLAUSE_45_READ */  in cavium_mdiobus_read_c45()
107 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);  in cavium_mdiobus_read_c45()
114 		smi_rd.u64 = oct_mdio_readq(p->register_base + SMI_RD_DAT);  in cavium_mdiobus_read_c45()
115 	} while (smi_rd.s.pending && --timeout);  in cavium_mdiobus_read_c45()
120 		return -EIO;  in cavium_mdiobus_read_c45()
127 	struct cavium_mdiobus *p = bus->priv;  in cavium_mdiobus_write_c22()
132 	cavium_mdiobus_set_mode(p, C22);  in cavium_mdiobus_write_c22()
136 	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);  in cavium_mdiobus_write_c22()
142 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);  in cavium_mdiobus_write_c22()
149 		smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);  in cavium_mdiobus_write_c22()
150 	} while (smi_wr.s.pending && --timeout);  in cavium_mdiobus_write_c22()
153 		return -EIO;  in cavium_mdiobus_write_c22()
162 	struct cavium_mdiobus *p = bus->priv;  in cavium_mdiobus_write_c45()
174 	oct_mdio_writeq(smi_wr.u64, p->register_base + SMI_WR_DAT);  in cavium_mdiobus_write_c45()
180 	oct_mdio_writeq(smi_cmd.u64, p->register_base + SMI_CMD);  in cavium_mdiobus_write_c45()
187 		smi_wr.u64 = oct_mdio_readq(p->register_base + SMI_WR_DAT);  in cavium_mdiobus_write_c45()
188 	} while (smi_wr.s.pending && --timeout);  in cavium_mdiobus_write_c45()
191 		return -EIO;  in cavium_mdiobus_write_c45()