284 строки
11 KiB
C
284 строки
11 KiB
C
#ifndef NETDEV_PCS_H
|
|
#define NETDEV_PCS_H
|
|
|
|
#include <linux/phy.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct device_node;
|
|
struct ethtool_cmd;
|
|
struct fwnode_handle;
|
|
struct net_device;
|
|
|
|
enum {
|
|
MLO_PAUSE_NONE,
|
|
MLO_PAUSE_ASYM = BIT(0),
|
|
MLO_PAUSE_SYM = BIT(1),
|
|
MLO_PAUSE_RX = BIT(2),
|
|
MLO_PAUSE_TX = BIT(3),
|
|
MLO_PAUSE_TXRX_MASK = MLO_PAUSE_TX | MLO_PAUSE_RX,
|
|
MLO_PAUSE_AN = BIT(4),
|
|
|
|
MLO_AN_PHY = 0, /* Conventional PHY */
|
|
MLO_AN_FIXED, /* Fixed-link mode */
|
|
MLO_AN_INBAND, /* In-band protocol */
|
|
};
|
|
|
|
static inline bool phylink_autoneg_inband(unsigned int mode)
|
|
{
|
|
return mode == MLO_AN_INBAND;
|
|
}
|
|
|
|
/**
|
|
* struct phylink_link_state - link state structure
|
|
* @advertising: ethtool bitmask containing advertised link modes
|
|
* @lp_advertising: ethtool bitmask containing link partner advertised link
|
|
* modes
|
|
* @interface: link &typedef phy_interface_t mode
|
|
* @speed: link speed, one of the SPEED_* constants.
|
|
* @duplex: link duplex mode, one of DUPLEX_* constants.
|
|
* @pause: link pause state, described by MLO_PAUSE_* constants.
|
|
* @link: true if the link is up.
|
|
* @an_enabled: true if autonegotiation is enabled/desired.
|
|
* @an_complete: true if autonegotiation has completed.
|
|
*/
|
|
struct phylink_link_state {
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
|
|
phy_interface_t interface;
|
|
int speed;
|
|
int duplex;
|
|
int pause;
|
|
unsigned int link:1;
|
|
unsigned int an_enabled:1;
|
|
unsigned int an_complete:1;
|
|
};
|
|
|
|
enum phylink_op_type {
|
|
PHYLINK_NETDEV = 0,
|
|
PHYLINK_DEV,
|
|
};
|
|
|
|
/**
|
|
* struct phylink_config - PHYLINK configuration structure
|
|
* @dev: a pointer to a struct device associated with the MAC
|
|
* @type: operation type of PHYLINK instance
|
|
*/
|
|
struct phylink_config {
|
|
struct device *dev;
|
|
enum phylink_op_type type;
|
|
};
|
|
|
|
/**
|
|
* struct phylink_mac_ops - MAC operations structure.
|
|
* @validate: Validate and update the link configuration.
|
|
* @mac_pcs_get_state: Read the current link state from the hardware.
|
|
* @mac_config: configure the MAC for the selected mode and state.
|
|
* @mac_an_restart: restart 802.3z BaseX autonegotiation.
|
|
* @mac_link_down: take the link down.
|
|
* @mac_link_up: allow the link to come up.
|
|
*
|
|
* The individual methods are described more fully below.
|
|
*/
|
|
struct phylink_mac_ops {
|
|
void (*validate)(struct phylink_config *config,
|
|
unsigned long *supported,
|
|
struct phylink_link_state *state);
|
|
void (*mac_pcs_get_state)(struct phylink_config *config,
|
|
struct phylink_link_state *state);
|
|
void (*mac_config)(struct phylink_config *config, unsigned int mode,
|
|
const struct phylink_link_state *state);
|
|
void (*mac_an_restart)(struct phylink_config *config);
|
|
void (*mac_link_down)(struct phylink_config *config, unsigned int mode,
|
|
phy_interface_t interface);
|
|
void (*mac_link_up)(struct phylink_config *config, unsigned int mode,
|
|
phy_interface_t interface,
|
|
struct phy_device *phy);
|
|
};
|
|
|
|
#if 0 /* For kernel-doc purposes only. */
|
|
/**
|
|
* validate - Validate and update the link configuration
|
|
* @config: a pointer to a &struct phylink_config.
|
|
* @supported: ethtool bitmask for supported link modes.
|
|
* @state: a pointer to a &struct phylink_link_state.
|
|
*
|
|
* Clear bits in the @supported and @state->advertising masks that
|
|
* are not supportable by the MAC.
|
|
*
|
|
* Note that the PHY may be able to transform from one connection
|
|
* technology to another, so, eg, don't clear 1000BaseX just
|
|
* because the MAC is unable to BaseX mode. This is more about
|
|
* clearing unsupported speeds and duplex settings. The port modes
|
|
* should not be cleared; phylink_set_port_modes() will help with this.
|
|
*
|
|
* If the @state->interface mode is %PHY_INTERFACE_MODE_1000BASEX
|
|
* or %PHY_INTERFACE_MODE_2500BASEX, select the appropriate mode
|
|
* based on @state->advertising and/or @state->speed and update
|
|
* @state->interface accordingly. See phylink_helper_basex_speed().
|
|
*
|
|
* When @state->interface is %PHY_INTERFACE_MODE_NA, phylink expects the
|
|
* MAC driver to return all supported link modes.
|
|
*
|
|
* If the @state->interface mode is not supported, then the @supported
|
|
* mask must be cleared.
|
|
*/
|
|
void validate(struct phylink_config *config, unsigned long *supported,
|
|
struct phylink_link_state *state);
|
|
|
|
/**
|
|
* mac_pcs_get_state() - Read the current inband link state from the hardware
|
|
* @config: a pointer to a &struct phylink_config.
|
|
* @state: a pointer to a &struct phylink_link_state.
|
|
*
|
|
* Read the current inband link state from the MAC PCS, reporting the
|
|
* current speed in @state->speed, duplex mode in @state->duplex, pause
|
|
* mode in @state->pause using the %MLO_PAUSE_RX and %MLO_PAUSE_TX bits,
|
|
* negotiation completion state in @state->an_complete, and link up state
|
|
* in @state->link. If possible, @state->lp_advertising should also be
|
|
* populated.
|
|
*/
|
|
void mac_pcs_get_state(struct phylink_config *config,
|
|
struct phylink_link_state *state);
|
|
|
|
/**
|
|
* mac_config() - configure the MAC for the selected mode and state
|
|
* @config: a pointer to a &struct phylink_config.
|
|
* @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
|
|
* @state: a pointer to a &struct phylink_link_state.
|
|
*
|
|
* Note - not all members of @state are valid. In particular,
|
|
* @state->lp_advertising, @state->link, @state->an_complete are never
|
|
* guaranteed to be correct, and so any mac_config() implementation must
|
|
* never reference these fields.
|
|
*
|
|
* The action performed depends on the currently selected mode:
|
|
*
|
|
* %MLO_AN_FIXED, %MLO_AN_PHY:
|
|
* Configure the specified @state->speed, @state->duplex and
|
|
* @state->pause (%MLO_PAUSE_TX / %MLO_PAUSE_RX) modes over a link
|
|
* specified by @state->interface. @state->advertising may be used,
|
|
* but is not required. Other members of @state must be ignored.
|
|
*
|
|
* Valid state members: interface, speed, duplex, pause, advertising.
|
|
*
|
|
* %MLO_AN_INBAND:
|
|
* place the link in an inband negotiation mode (such as 802.3z
|
|
* 1000base-X or Cisco SGMII mode depending on the @state->interface
|
|
* mode). In both cases, link state management (whether the link
|
|
* is up or not) is performed by the MAC, and reported via the
|
|
* mac_pcs_get_state() callback. Changes in link state must be made
|
|
* by calling phylink_mac_change().
|
|
*
|
|
* If in 802.3z mode, the link speed is fixed, dependent on the
|
|
* @state->interface. Duplex is negotiated, and pause is advertised
|
|
* according to @state->an_enabled, @state->pause and
|
|
* @state->advertising flags. Beware of MACs which only support full
|
|
* duplex at gigabit and higher speeds.
|
|
*
|
|
* If in Cisco SGMII mode, the link speed and duplex mode are passed
|
|
* in the serial bitstream 16-bit configuration word, and the MAC
|
|
* should be configured to read these bits and acknowledge the
|
|
* configuration word. Nothing is advertised by the MAC. The MAC is
|
|
* responsible for reading the configuration word and configuring
|
|
* itself accordingly.
|
|
*
|
|
* Valid state members: interface, an_enabled, pause, advertising.
|
|
*
|
|
* Implementations are expected to update the MAC to reflect the
|
|
* requested settings - i.o.w., if nothing has changed between two
|
|
* calls, no action is expected. If only flow control settings have
|
|
* changed, flow control should be updated *without* taking the link
|
|
* down. This "update" behaviour is critical to avoid bouncing the
|
|
* link up status.
|
|
*/
|
|
void mac_config(struct phylink_config *config, unsigned int mode,
|
|
const struct phylink_link_state *state);
|
|
|
|
/**
|
|
* mac_an_restart() - restart 802.3z BaseX autonegotiation
|
|
* @config: a pointer to a &struct phylink_config.
|
|
*/
|
|
void mac_an_restart(struct phylink_config *config);
|
|
|
|
/**
|
|
* mac_link_down() - take the link down
|
|
* @config: a pointer to a &struct phylink_config.
|
|
* @mode: link autonegotiation mode
|
|
* @interface: link &typedef phy_interface_t mode
|
|
*
|
|
* If @mode is not an in-band negotiation mode (as defined by
|
|
* phylink_autoneg_inband()), force the link down and disable any
|
|
* Energy Efficient Ethernet MAC configuration. Interface type
|
|
* selection must be done in mac_config().
|
|
*/
|
|
void mac_link_down(struct phylink_config *config, unsigned int mode,
|
|
phy_interface_t interface);
|
|
|
|
/**
|
|
* mac_link_up() - allow the link to come up
|
|
* @config: a pointer to a &struct phylink_config.
|
|
* @mode: link autonegotiation mode
|
|
* @interface: link &typedef phy_interface_t mode
|
|
* @phy: any attached phy
|
|
*
|
|
* If @mode is not an in-band negotiation mode (as defined by
|
|
* phylink_autoneg_inband()), allow the link to come up. If @phy
|
|
* is non-%NULL, configure Energy Efficient Ethernet by calling
|
|
* phy_init_eee() and perform appropriate MAC configuration for EEE.
|
|
* Interface type selection must be done in mac_config().
|
|
*/
|
|
void mac_link_up(struct phylink_config *config, unsigned int mode,
|
|
phy_interface_t interface,
|
|
struct phy_device *phy);
|
|
#endif
|
|
|
|
struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,
|
|
phy_interface_t iface,
|
|
const struct phylink_mac_ops *ops);
|
|
void phylink_destroy(struct phylink *);
|
|
|
|
int phylink_connect_phy(struct phylink *, struct phy_device *);
|
|
int phylink_of_phy_connect(struct phylink *, struct device_node *, u32 flags);
|
|
void phylink_disconnect_phy(struct phylink *);
|
|
int phylink_fixed_state_cb(struct phylink *,
|
|
void (*cb)(struct net_device *dev,
|
|
struct phylink_link_state *));
|
|
|
|
void phylink_mac_change(struct phylink *, bool up);
|
|
|
|
void phylink_start(struct phylink *);
|
|
void phylink_stop(struct phylink *);
|
|
|
|
void phylink_ethtool_get_wol(struct phylink *, struct ethtool_wolinfo *);
|
|
int phylink_ethtool_set_wol(struct phylink *, struct ethtool_wolinfo *);
|
|
|
|
int phylink_ethtool_ksettings_get(struct phylink *,
|
|
struct ethtool_link_ksettings *);
|
|
int phylink_ethtool_ksettings_set(struct phylink *,
|
|
const struct ethtool_link_ksettings *);
|
|
int phylink_ethtool_nway_reset(struct phylink *);
|
|
void phylink_ethtool_get_pauseparam(struct phylink *,
|
|
struct ethtool_pauseparam *);
|
|
int phylink_ethtool_set_pauseparam(struct phylink *,
|
|
struct ethtool_pauseparam *);
|
|
int phylink_get_eee_err(struct phylink *);
|
|
int phylink_init_eee(struct phylink *, bool);
|
|
int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *);
|
|
int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *);
|
|
int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
|
|
|
|
#define phylink_zero(bm) \
|
|
bitmap_zero(bm, __ETHTOOL_LINK_MODE_MASK_NBITS)
|
|
#define __phylink_do_bit(op, bm, mode) \
|
|
op(ETHTOOL_LINK_MODE_ ## mode ## _BIT, bm)
|
|
|
|
#define phylink_set(bm, mode) __phylink_do_bit(__set_bit, bm, mode)
|
|
#define phylink_clear(bm, mode) __phylink_do_bit(__clear_bit, bm, mode)
|
|
#define phylink_test(bm, mode) __phylink_do_bit(test_bit, bm, mode)
|
|
|
|
void phylink_set_port_modes(unsigned long *bits);
|
|
void phylink_helper_basex_speed(struct phylink_link_state *state);
|
|
|
|
#endif
|