From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/include/linux/phylink.h | 367 ++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 312 insertions(+), 55 deletions(-)
diff --git a/kernel/include/linux/phylink.h b/kernel/include/linux/phylink.h
index 021fc65..d81a714 100644
--- a/kernel/include/linux/phylink.h
+++ b/kernel/include/linux/phylink.h
@@ -12,12 +12,10 @@
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_RX = BIT(0),
+ MLO_PAUSE_TX = BIT(1),
MLO_PAUSE_TXRX_MASK = MLO_PAUSE_TX | MLO_PAUSE_RX,
- MLO_PAUSE_AN = BIT(4),
+ MLO_PAUSE_AN = BIT(2),
MLO_AN_PHY = 0, /* Conventional PHY */
MLO_AN_FIXED, /* Fixed-link mode */
@@ -54,11 +52,37 @@
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
+ * @pcs_poll: MAC PCS cannot provide link change interrupt
+ * @poll_fixed_state: if true, starts link_poll,
+ * if MAC link is at %MLO_AN_FIXED mode.
+ * @get_fixed_state: callback to execute to determine the fixed link state,
+ * if MAC link is at %MLO_AN_FIXED mode.
+ */
+struct phylink_config {
+ struct device *dev;
+ enum phylink_op_type type;
+ bool pcs_poll;
+ bool poll_fixed_state;
+ void (*get_fixed_state)(struct phylink_config *config,
+ struct phylink_link_state *state);
+};
+
/**
* struct phylink_mac_ops - MAC operations structure.
* @validate: Validate and update the link configuration.
- * @mac_link_state: Read the current link state from the hardware.
+ * @mac_pcs_get_state: Read the current link state from the hardware.
+ * @mac_prepare: prepare for a major reconfiguration of the interface.
* @mac_config: configure the MAC for the selected mode and state.
+ * @mac_finish: finish a major reconfiguration of the interface.
* @mac_an_restart: restart 802.3z BaseX autonegotiation.
* @mac_link_down: take the link down.
* @mac_link_up: allow the link to come up.
@@ -66,24 +90,30 @@
* The individual methods are described more fully below.
*/
struct phylink_mac_ops {
- void (*validate)(struct net_device *ndev, unsigned long *supported,
+ void (*validate)(struct phylink_config *config,
+ unsigned long *supported,
struct phylink_link_state *state);
- int (*mac_link_state)(struct net_device *ndev,
- struct phylink_link_state *state);
- void (*mac_config)(struct net_device *ndev, unsigned int mode,
+ void (*mac_pcs_get_state)(struct phylink_config *config,
+ struct phylink_link_state *state);
+ int (*mac_prepare)(struct phylink_config *config, unsigned int mode,
+ phy_interface_t iface);
+ void (*mac_config)(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state);
- void (*mac_an_restart)(struct net_device *ndev);
- void (*mac_link_down)(struct net_device *ndev, unsigned int mode,
+ int (*mac_finish)(struct phylink_config *config, unsigned int mode,
+ phy_interface_t iface);
+ 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 net_device *ndev, unsigned int mode,
- phy_interface_t interface,
- struct phy_device *phy);
+ void (*mac_link_up)(struct phylink_config *config,
+ struct phy_device *phy, unsigned int mode,
+ phy_interface_t interface, int speed, int duplex,
+ bool tx_pause, bool rx_pause);
};
#if 0 /* For kernel-doc purposes only. */
/**
* validate - Validate and update the link configuration
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * @config: a pointer to a &struct phylink_config.
* @supported: ethtool bitmask for supported link modes.
* @state: a pointer to a &struct phylink_link_state.
*
@@ -93,55 +123,118 @@
* 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.
+ * 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.
+ * @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 net_device *ndev, unsigned long *supported,
+void validate(struct phylink_config *config, unsigned long *supported,
struct phylink_link_state *state);
/**
- * mac_link_state() - Read the current link state from the hardware
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * 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 link state from the MAC, 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.
+ * 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.
*/
-int mac_link_state(struct net_device *ndev,
- struct phylink_link_state *state);
+void mac_pcs_get_state(struct phylink_config *config,
+ struct phylink_link_state *state);
+
+/**
+ * mac_prepare() - prepare to change the PHY interface mode
+ * @config: a pointer to a &struct phylink_config.
+ * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
+ * @iface: interface mode to switch to
+ *
+ * phylink will call this method at the beginning of a full initialisation
+ * of the link, which includes changing the interface mode or at initial
+ * startup time. It may be called for the current mode. The MAC driver
+ * should perform whatever actions are required, e.g. disabling the
+ * Serdes PHY.
+ *
+ * This will be the first call in the sequence:
+ * - mac_prepare()
+ * - mac_config()
+ * - pcs_config()
+ * - possible pcs_an_restart()
+ * - mac_finish()
+ *
+ * Returns zero on success, or negative errno on failure which will be
+ * reported to the kernel log.
+ */
+int mac_prepare(struct phylink_config *config, unsigned int mode,
+ phy_interface_t iface);
/**
* mac_config() - configure the MAC for the selected mode and state
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * @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.
+ *
+ * (this requires a rewrite - please refer to mac_link_up() for situations
+ * where the PCS and MAC are not tightly integrated.)
+ *
+ * In all negotiation modes, as defined by @mode, @state->pause indicates the
+ * pause settings which should be applied as follows. If %MLO_PAUSE_AN is not
+ * set, %MLO_PAUSE_TX and %MLO_PAUSE_RX indicate whether the MAC should send
+ * pause frames and/or act on received pause frames respectively. Otherwise,
+ * the results of in-band negotiation/status from the MAC PCS should be used
+ * to control the MAC pause mode settings.
*
* 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) mode.
+ * Configure for non-inband negotiation mode, where the link settings
+ * are completely communicated via mac_link_up(). The physical link
+ * protocol from the MAC is specified by @state->interface.
+ *
+ * @state->advertising may be used, but is not required.
+ *
+ * Older drivers (prior to the mac_link_up() change) may use @state->speed,
+ * @state->duplex and @state->pause to configure the MAC, but this is
+ * deprecated; such drivers should be converted to use mac_link_up().
+ *
+ * Other members of @state must be ignored.
+ *
+ * Valid state members: interface, advertising.
+ * Deprecated state members: speed, duplex, pause.
*
* %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_link_state() callback. Changes in link state must be made
+ * mac_pcs_get_state() callback. Changes in link state must be made
* by calling phylink_mac_change().
*
+ * Interface mode specific details are mentioned below.
+ *
* 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.
+ * @state->interface. Duplex and pause modes are negotiated via
+ * the in-band configuration word. Advertised pause modes are set
+ * according to the @state->an_enabled 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
@@ -149,19 +242,45 @@
* 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 net_device *ndev, unsigned int mode,
+void mac_config(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state);
/**
- * mac_an_restart() - restart 802.3z BaseX autonegotiation
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * mac_finish() - finish a to change the PHY interface mode
+ * @config: a pointer to a &struct phylink_config.
+ * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
+ * @iface: interface mode to switch to
+ *
+ * phylink will call this if it called mac_prepare() to allow the MAC to
+ * complete any necessary steps after the MAC and PCS have been configured
+ * for the @mode and @iface. E.g. a MAC driver may wish to re-enable the
+ * Serdes PHY here if it was previously disabled by mac_prepare().
+ *
+ * Returns zero on success, or negative errno on failure which will be
+ * reported to the kernel log.
*/
-void mac_an_restart(struct net_device *ndev);
+int mac_finish(struct phylink_config *config, unsigned int mode,
+ phy_interface_t iface);
+
+/**
+ * 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
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * @config: a pointer to a &struct phylink_config.
* @mode: link autonegotiation mode
* @interface: link &typedef phy_interface_t mode
*
@@ -170,37 +289,157 @@
* Energy Efficient Ethernet MAC configuration. Interface type
* selection must be done in mac_config().
*/
-void mac_link_down(struct net_device *ndev, unsigned int mode,
+void mac_link_down(struct phylink_config *config, unsigned int mode,
phy_interface_t interface);
/**
* mac_link_up() - allow the link to come up
- * @ndev: a pointer to a &struct net_device for the MAC.
+ * @config: a pointer to a &struct phylink_config.
+ * @phy: any attached phy
* @mode: link autonegotiation mode
* @interface: link &typedef phy_interface_t mode
- * @phy: any attached phy
+ * @speed: link speed
+ * @duplex: link duplex
+ * @tx_pause: link transmit pause enablement status
+ * @rx_pause: link receive pause enablement status
*
- * 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
+ * Configure the MAC for an established link.
+ *
+ * @speed, @duplex, @tx_pause and @rx_pause indicate the finalised link
+ * settings, and should be used to configure the MAC block appropriately
+ * where these settings are not automatically conveyed from the PCS block,
+ * or if in-band negotiation (as defined by phylink_autoneg_inband(@mode))
+ * is disabled.
+ *
+ * Note that when 802.3z in-band negotiation is in use, it is possible
+ * that the user wishes to override the pause settings, and this should
+ * be allowed when considering the implementation of this method.
+ *
+ * If in-band negotiation mode is disabled, 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 net_device *ndev, unsigned int mode,
- phy_interface_t interface,
- struct phy_device *phy);
+void mac_link_up(struct phylink_config *config, struct phy_device *phy,
+ unsigned int mode, phy_interface_t interface,
+ int speed, int duplex, bool tx_pause, bool rx_pause);
#endif
-struct phylink *phylink_create(struct net_device *, struct fwnode_handle *,
- phy_interface_t iface, const struct phylink_mac_ops *ops);
+struct phylink_pcs_ops;
+
+/**
+ * struct phylink_pcs - PHYLINK PCS instance
+ * @ops: a pointer to the &struct phylink_pcs_ops structure
+ * @poll: poll the PCS for link changes
+ *
+ * This structure is designed to be embedded within the PCS private data,
+ * and will be passed between phylink and the PCS.
+ */
+struct phylink_pcs {
+ const struct phylink_pcs_ops *ops;
+ bool poll;
+};
+
+/**
+ * struct phylink_pcs_ops - MAC PCS operations structure.
+ * @pcs_get_state: read the current MAC PCS link state from the hardware.
+ * @pcs_config: configure the MAC PCS for the selected mode and state.
+ * @pcs_an_restart: restart 802.3z BaseX autonegotiation.
+ * @pcs_link_up: program the PCS for the resolved link configuration
+ * (where necessary).
+ */
+struct phylink_pcs_ops {
+ void (*pcs_get_state)(struct phylink_pcs *pcs,
+ struct phylink_link_state *state);
+ int (*pcs_config)(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac);
+ void (*pcs_an_restart)(struct phylink_pcs *pcs);
+ void (*pcs_link_up)(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface, int speed, int duplex);
+};
+
+#if 0 /* For kernel-doc purposes only. */
+/**
+ * pcs_get_state() - Read the current inband link state from the hardware
+ * @pcs: a pointer to a &struct phylink_pcs.
+ * @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.
+ *
+ * When present, this overrides mac_pcs_get_state() in &struct
+ * phylink_mac_ops.
+ */
+void pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state);
+
+/**
+ * pcs_config() - Configure the PCS mode and advertisement
+ * @pcs: a pointer to a &struct phylink_pcs.
+ * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
+ * @interface: interface mode to be used
+ * @advertising: adertisement ethtool link mode mask
+ * @permit_pause_to_mac: permit forwarding pause resolution to MAC
+ *
+ * Configure the PCS for the operating mode, the interface mode, and set
+ * the advertisement mask. @permit_pause_to_mac indicates whether the
+ * hardware may forward the pause mode resolution to the MAC.
+ *
+ * When operating in %MLO_AN_INBAND, inband should always be enabled,
+ * otherwise inband should be disabled.
+ *
+ * For SGMII, there is no advertisement from the MAC side, the PCS should
+ * be programmed to acknowledge the inband word from the PHY.
+ *
+ * For 1000BASE-X, the advertisement should be programmed into the PCS.
+ *
+ * For most 10GBASE-R, there is no advertisement.
+ */
+int pcs_config(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface, const unsigned long *advertising,
+ bool permit_pause_to_mac);
+
+/**
+ * pcs_an_restart() - restart 802.3z BaseX autonegotiation
+ * @pcs: a pointer to a &struct phylink_pcs.
+ *
+ * When PCS ops are present, this overrides mac_an_restart() in &struct
+ * phylink_mac_ops.
+ */
+void pcs_an_restart(struct phylink_pcs *pcs);
+
+/**
+ * pcs_link_up() - program the PCS for the resolved link configuration
+ * @pcs: a pointer to a &struct phylink_pcs.
+ * @mode: link autonegotiation mode
+ * @interface: link &typedef phy_interface_t mode
+ * @speed: link speed
+ * @duplex: link duplex
+ *
+ * This call will be made just before mac_link_up() to inform the PCS of
+ * the resolved link parameters. For example, a PCS operating in SGMII
+ * mode without in-band AN needs to be manually configured for the link
+ * and duplex setting. Otherwise, this should be a no-op.
+ */
+void pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface, int speed, int duplex);
+#endif
+
+struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,
+ phy_interface_t iface,
+ const struct phylink_mac_ops *mac_ops);
+void phylink_set_pcs(struct phylink *, struct phylink_pcs *pcs);
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);
@@ -220,9 +459,12 @@
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);
+int phylink_speed_down(struct phylink *pl, bool sync);
+int phylink_speed_up(struct phylink *pl);
#define phylink_zero(bm) \
bitmap_zero(bm, __ETHTOOL_LINK_MODE_MASK_NBITS)
@@ -236,4 +478,19 @@
void phylink_set_port_modes(unsigned long *bits);
void phylink_helper_basex_speed(struct phylink_link_state *state);
+void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs,
+ struct phylink_link_state *state);
+int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
+ phy_interface_t interface,
+ const unsigned long *advertising);
+int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,
+ phy_interface_t interface,
+ const unsigned long *advertising);
+void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);
+
+void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
+ struct phylink_link_state *state);
+
+void phylink_decode_usxgmii_word(struct phylink_link_state *state,
+ uint16_t lpa);
#endif
--
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