drivers/net/mdio/mdio-cavium.h

Source file repositories/reference/linux-study-clean/drivers/net/mdio/mdio-cavium.h

File Facts

System
Linux kernel
Corpus path
drivers/net/mdio/mdio-cavium.h
Extension
.h
Size
2875 bytes
Lines
124
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cvmx_smix_clk_s {
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_25_63:39,
	  OCT_MDIO_BITFIELD_FIELD(u64 mode:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_21_23:3,
	  OCT_MDIO_BITFIELD_FIELD(u64 sample_hi:5,
	  OCT_MDIO_BITFIELD_FIELD(u64 sample_mode:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_14_14:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 clk_idle:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 preamble:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 sample:4,
	  OCT_MDIO_BITFIELD_FIELD(u64 phase:8,
	  ;))))))))))
	} s;
};

union cvmx_smix_cmd {
	u64 u64;
	struct cvmx_smix_cmd_s {
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
	  OCT_MDIO_BITFIELD_FIELD(u64 phy_op:2,
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_13_15:3,
	  OCT_MDIO_BITFIELD_FIELD(u64 phy_adr:5,
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_5_7:3,
	  OCT_MDIO_BITFIELD_FIELD(u64 reg_adr:5,
	  ;))))))
	} s;
};

union cvmx_smix_en {
	u64 u64;
	struct cvmx_smix_en_s {
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_1_63:63,
	  OCT_MDIO_BITFIELD_FIELD(u64 en:1,
	  ;))
	} s;
};

union cvmx_smix_rd_dat {
	u64 u64;
	struct cvmx_smix_rd_dat_s {
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
	  OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 val:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
	  ;))))
	} s;
};

union cvmx_smix_wr_dat {
	u64 u64;
	struct cvmx_smix_wr_dat_s {
	  OCT_MDIO_BITFIELD_FIELD(u64 reserved_18_63:46,
	  OCT_MDIO_BITFIELD_FIELD(u64 pending:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 val:1,
	  OCT_MDIO_BITFIELD_FIELD(u64 dat:16,
	  ;))))
	} s;
};

struct cavium_mdiobus {
	struct mii_bus *mii_bus;
	void __iomem *register_base;
	enum cavium_mdiobus_mode mode;
};

#ifdef CONFIG_CAVIUM_OCTEON_SOC

#include <asm/octeon/octeon.h>

static inline void oct_mdio_writeq(u64 val, void __iomem *addr)
{
	cvmx_write_csr((u64 __force)addr, val);
}

static inline u64 oct_mdio_readq(void __iomem *addr)
{
	return cvmx_read_csr((u64 __force)addr);
}
#else
#include <linux/io-64-nonatomic-lo-hi.h>

#define oct_mdio_writeq(val, addr)	writeq(val, addr)
#define oct_mdio_readq(addr)		readq(addr)
#endif

int cavium_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int regnum);
int cavium_mdiobus_write_c22(struct mii_bus *bus, int phy_id, int regnum,
			     u16 val);
int cavium_mdiobus_read_c45(struct mii_bus *bus, int phy_id, int devad,
			    int regnum);

Annotation

Implementation Notes