mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
1eefee901f
A follow-on patch uses PCI probing to find the Thunder MDIO hardware. In preparation for this, split out the common code into a new file mdio-cavium.c, which will be used by both the existing OCTEON driver, and the new Thunder PCI based driver. As part of the refactoring simplify the struct cavium_mdiobus by removing fields that are only ever used in the probe function and can just as well be local variables. Use readq/writeq in preference to readq_relaxed/writeq_relaxed as the relaxed form was an optimization for an early chip revision, and the MDIO drivers are not performance bottlenecks that need optimization in the first place. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2009-2016 Cavium, Inc.
|
|
*/
|
|
|
|
enum cavium_mdiobus_mode {
|
|
UNINIT = 0,
|
|
C22,
|
|
C45
|
|
};
|
|
|
|
#define SMI_CMD 0x0
|
|
#define SMI_WR_DAT 0x8
|
|
#define SMI_RD_DAT 0x10
|
|
#define SMI_CLK 0x18
|
|
#define SMI_EN 0x20
|
|
|
|
#ifdef __BIG_ENDIAN_BITFIELD
|
|
#define OCT_MDIO_BITFIELD_FIELD(field, more) \
|
|
field; \
|
|
more
|
|
|
|
#else
|
|
#define OCT_MDIO_BITFIELD_FIELD(field, more) \
|
|
more \
|
|
field;
|
|
|
|
#endif
|
|
|
|
union cvmx_smix_clk {
|
|
u64 u64;
|
|
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;
|
|
u64 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, u64 addr)
|
|
{
|
|
cvmx_write_csr(addr, val);
|
|
}
|
|
|
|
static inline u64 oct_mdio_readq(u64 addr)
|
|
{
|
|
return cvmx_read_csr(addr);
|
|
}
|
|
#else
|
|
#define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
|
|
#define oct_mdio_readq(addr) readq((void *)addr)
|
|
#endif
|
|
|
|
int cavium_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum);
|
|
int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val);
|