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u-boot/include/phy.h
Grygorii Strashko eef0b8a930 net: phy: add ofnode node to struct phy_device 
Now the UCLASS_ETH device "node" field is owerwritten by some network drivers in
case of Ethernet PHYs which are linked to UCLASS_ETH device using
"phy-handle" DT property and when Ethernet PHY driver needs to read some
additional information from DT. In such cases following happens (in
general):

- network drivers
	priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
				   priv->interface);
	<-- phydev is connected to dev which is UCLASS_ETH device

	if (priv->phy_of_handle > 0)
		dev_set_of_offset(priv->phydev->dev, priv->phy_of_handle);
	<-- phydev->dev->node is overwritten by phy-handle DT node

- PHY driver in .config() callback
	int node = dev_of_offset(dev);
	<-- PHY driver uses overwritten dev->node
        const void *fdt = gd->fdt_blob;

	 if (fdtdec_get_bool(fdt, node, "property"))
		...

As result, UCLASS_ETH device can't be used any more for DT accessing.

This patch adds additional ofnode node field to struct phy_device which can
be set explicitly by network drivers and used by PHY drivers, so
overwriting can be avoided. Also add helper function phy_get_ofnode()
which will check and return phy_device->node or dev_ofnode(phydev->dev) for
backward compatibility with existing drivers.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:22 -05:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2011 Freescale Semiconductor, Inc.
* Andy Fleming <afleming@gmail.com>
*
* This file pretty much stolen from Linux's mii.h/ethtool.h/phy.h
*/
#ifndef _PHY_H
#define _PHY_H
#include <dm.h>
#include <linux/list.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
#include <phy_interface.h>
#define PHY_FIXED_ID 0xa5a55a5a
#define PHY_MAX_ADDR 32
#define PHY_FLAG_BROKEN_RESET (1 << 0) /* soft reset not supported */
#define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
SUPPORTED_TP | \
SUPPORTED_MII)
#define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
SUPPORTED_10baseT_Full)
#define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
SUPPORTED_100baseT_Full)
#define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
SUPPORTED_1000baseT_Full)
#define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \
PHY_100BT_FEATURES | \
PHY_DEFAULT_FEATURES)
#define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
PHY_1000BT_FEATURES)
#define PHY_10G_FEATURES (PHY_GBIT_FEATURES | \
SUPPORTED_10000baseT_Full)
#ifndef PHY_ANEG_TIMEOUT
#define PHY_ANEG_TIMEOUT 4000
#endif
struct phy_device;
#define MDIO_NAME_LEN 32
struct mii_dev {
struct list_head link;
char name[MDIO_NAME_LEN];
void *priv;
int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
u16 val);
int (*reset)(struct mii_dev *bus);
struct phy_device *phymap[PHY_MAX_ADDR];
u32 phy_mask;
};
/* struct phy_driver: a structure which defines PHY behavior
*
* uid will contain a number which represents the PHY. During
* startup, the driver will poll the PHY to find out what its
* UID--as defined by registers 2 and 3--is. The 32-bit result
* gotten from the PHY will be masked to
* discard any bits which may change based on revision numbers
* unimportant to functionality
*
*/
struct phy_driver {
char *name;
unsigned int uid;
unsigned int mask;
unsigned int mmds;
u32 features;
/* Called to do any driver startup necessities */
/* Will be called during phy_connect */
int (*probe)(struct phy_device *phydev);
/* Called to configure the PHY, and modify the controller
* based on the results. Should be called after phy_connect */
int (*config)(struct phy_device *phydev);
/* Called when starting up the controller */
int (*startup)(struct phy_device *phydev);
/* Called when bringing down the controller */
int (*shutdown)(struct phy_device *phydev);
int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
u16 val);
struct list_head list;
};
struct phy_device {
/* Information about the PHY type */
/* And management functions */
struct mii_dev *bus;
struct phy_driver *drv;
void *priv;
#ifdef CONFIG_DM_ETH
struct udevice *dev;
ofnode node;
#else
struct eth_device *dev;
#endif
/* forced speed & duplex (no autoneg)
* partner speed & duplex & pause (autoneg)
*/
int speed;
int duplex;
/* The most recently read link state */
int link;
int port;
phy_interface_t interface;
u32 advertising;
u32 supported;
u32 mmds;
int autoneg;
int addr;
int pause;
int asym_pause;
u32 phy_id;
u32 flags;
};
struct fixed_link {
int phy_id;
int duplex;
int link_speed;
int pause;
int asym_pause;
};
static inline int phy_read(struct phy_device *phydev, int devad, int regnum)
{
struct mii_dev *bus = phydev->bus;
return bus->read(bus, phydev->addr, devad, regnum);
}
static inline int phy_write(struct phy_device *phydev, int devad, int regnum,
u16 val)
{
struct mii_dev *bus = phydev->bus;
return bus->write(bus, phydev->addr, devad, regnum, val);
}
#ifdef CONFIG_PHYLIB_10G
extern struct phy_driver gen10g_driver;
/* For now, XGMII is the only 10G interface */
static inline int is_10g_interface(phy_interface_t interface)
{
return interface == PHY_INTERFACE_MODE_XGMII;
}
#endif
int phy_init(void);
int phy_reset(struct phy_device *phydev);
struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
phy_interface_t interface);
#ifdef CONFIG_DM_ETH
void phy_connect_dev(struct phy_device *phydev, struct udevice *dev);
struct phy_device *phy_connect(struct mii_dev *bus, int addr,
struct udevice *dev,
phy_interface_t interface);
static inline ofnode phy_get_ofnode(struct phy_device *phydev)
{
if (ofnode_valid(phydev->node))
return phydev->node;
else
return dev_ofnode(phydev->dev);
}
#else
void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev);
struct phy_device *phy_connect(struct mii_dev *bus, int addr,
struct eth_device *dev,
phy_interface_t interface);
static inline ofnode phy_get_ofnode(struct phy_device *phydev)
{
return ofnode_null();
}
#endif
int phy_startup(struct phy_device *phydev);
int phy_config(struct phy_device *phydev);
int phy_shutdown(struct phy_device *phydev);
int phy_register(struct phy_driver *drv);
int phy_set_supported(struct phy_device *phydev, u32 max_speed);
int genphy_config_aneg(struct phy_device *phydev);
int genphy_restart_aneg(struct phy_device *phydev);
int genphy_update_link(struct phy_device *phydev);
int genphy_parse_link(struct phy_device *phydev);
int genphy_config(struct phy_device *phydev);
int genphy_startup(struct phy_device *phydev);
int genphy_shutdown(struct phy_device *phydev);
int gen10g_config(struct phy_device *phydev);
int gen10g_startup(struct phy_device *phydev);
int gen10g_shutdown(struct phy_device *phydev);
int gen10g_discover_mmds(struct phy_device *phydev);
int phy_b53_init(void);
int phy_mv88e61xx_init(void);
int phy_aquantia_init(void);
int phy_atheros_init(void);
int phy_broadcom_init(void);
int phy_cortina_init(void);
int phy_davicom_init(void);
int phy_et1011c_init(void);
int phy_lxt_init(void);
int phy_marvell_init(void);
int phy_micrel_ksz8xxx_init(void);
int phy_micrel_ksz90x1_init(void);
int phy_meson_gxl_init(void);
int phy_natsemi_init(void);
int phy_realtek_init(void);
int phy_smsc_init(void);
int phy_teranetics_init(void);
int phy_ti_init(void);
int phy_vitesse_init(void);
int phy_xilinx_init(void);
int phy_mscc_init(void);
int phy_fixed_init(void);
int board_phy_config(struct phy_device *phydev);
int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);
/**
* phy_get_interface_by_name() - Look up a PHY interface name
*
* @str: PHY interface name, e.g. "mii"
* @return PHY_INTERFACE_MODE_... value, or -1 if not found
*/
int phy_get_interface_by_name(const char *str);
/**
* phy_interface_is_rgmii - Convenience function for testing if a PHY interface
* is RGMII (all variants)
* @phydev: the phy_device struct
*/
static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
{
return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
}
/**
* phy_interface_is_sgmii - Convenience function for testing if a PHY interface
* is SGMII (all variants)
* @phydev: the phy_device struct
*/
static inline bool phy_interface_is_sgmii(struct phy_device *phydev)
{
return phydev->interface >= PHY_INTERFACE_MODE_SGMII &&
phydev->interface <= PHY_INTERFACE_MODE_QSGMII;
}
/* PHY UIDs for various PHYs that are referenced in external code */
#define PHY_UID_CS4340 0x13e51002
#define PHY_UID_CS4223 0x03e57003
#define PHY_UID_TN2020 0x00a19410
#endif
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