5 #include <linux/spinlock.h>
6 #include <linux/workqueue.h>
15 MLO_PAUSE_RX = BIT(0),
16 MLO_PAUSE_TX = BIT(1),
17 MLO_PAUSE_TXRX_MASK = MLO_PAUSE_TX | MLO_PAUSE_RX,
18 MLO_PAUSE_AN = BIT(2),
20 MLO_AN_PHY = 0, /* Conventional PHY */
21 MLO_AN_FIXED, /* Fixed-link mode */
22 MLO_AN_INBAND, /* In-band protocol */
25 static inline bool phylink_autoneg_inband(unsigned int mode)
27 return mode == MLO_AN_INBAND;
31 * struct phylink_link_state - link state structure
32 * @advertising: ethtool bitmask containing advertised link modes
33 * @lp_advertising: ethtool bitmask containing link partner advertised link
35 * @interface: link &typedef phy_interface_t mode
36 * @speed: link speed, one of the SPEED_* constants.
37 * @duplex: link duplex mode, one of DUPLEX_* constants.
38 * @pause: link pause state, described by MLO_PAUSE_* constants.
39 * @link: true if the link is up.
40 * @an_enabled: true if autonegotiation is enabled/desired.
41 * @an_complete: true if autonegotiation has completed.
43 struct phylink_link_state {
44 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
45 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
46 phy_interface_t interface;
51 unsigned int an_enabled:1;
52 unsigned int an_complete:1;
55 enum phylink_op_type {
61 * struct phylink_config - PHYLINK configuration structure
62 * @dev: a pointer to a struct device associated with the MAC
63 * @type: operation type of PHYLINK instance
64 * @pcs_poll: MAC PCS cannot provide link change interrupt
65 * @poll_fixed_state: if true, starts link_poll,
66 * if MAC link is at %MLO_AN_FIXED mode.
67 * @get_fixed_state: callback to execute to determine the fixed link state,
68 * if MAC link is at %MLO_AN_FIXED mode.
70 struct phylink_config {
72 enum phylink_op_type type;
74 bool poll_fixed_state;
75 void (*get_fixed_state)(struct phylink_config *config,
76 struct phylink_link_state *state);
80 * struct phylink_mac_ops - MAC operations structure.
81 * @validate: Validate and update the link configuration.
82 * @mac_pcs_get_state: Read the current link state from the hardware.
83 * @mac_config: configure the MAC for the selected mode and state.
84 * @mac_an_restart: restart 802.3z BaseX autonegotiation.
85 * @mac_link_down: take the link down.
86 * @mac_link_up: allow the link to come up.
88 * The individual methods are described more fully below.
90 struct phylink_mac_ops {
91 void (*validate)(struct phylink_config *config,
92 unsigned long *supported,
93 struct phylink_link_state *state);
94 void (*mac_pcs_get_state)(struct phylink_config *config,
95 struct phylink_link_state *state);
96 void (*mac_config)(struct phylink_config *config, unsigned int mode,
97 const struct phylink_link_state *state);
98 void (*mac_an_restart)(struct phylink_config *config);
99 void (*mac_link_down)(struct phylink_config *config, unsigned int mode,
100 phy_interface_t interface);
101 void (*mac_link_up)(struct phylink_config *config,
102 struct phy_device *phy, unsigned int mode,
103 phy_interface_t interface, int speed, int duplex,
104 bool tx_pause, bool rx_pause);
107 #if 0 /* For kernel-doc purposes only. */
109 * validate - Validate and update the link configuration
110 * @config: a pointer to a &struct phylink_config.
111 * @supported: ethtool bitmask for supported link modes.
112 * @state: a pointer to a &struct phylink_link_state.
114 * Clear bits in the @supported and @state->advertising masks that
115 * are not supportable by the MAC.
117 * Note that the PHY may be able to transform from one connection
118 * technology to another, so, eg, don't clear 1000BaseX just
119 * because the MAC is unable to BaseX mode. This is more about
120 * clearing unsupported speeds and duplex settings. The port modes
121 * should not be cleared; phylink_set_port_modes() will help with this.
123 * If the @state->interface mode is %PHY_INTERFACE_MODE_1000BASEX
124 * or %PHY_INTERFACE_MODE_2500BASEX, select the appropriate mode
125 * based on @state->advertising and/or @state->speed and update
126 * @state->interface accordingly. See phylink_helper_basex_speed().
128 * When @state->interface is %PHY_INTERFACE_MODE_NA, phylink expects the
129 * MAC driver to return all supported link modes.
131 * If the @state->interface mode is not supported, then the @supported
132 * mask must be cleared.
134 void validate(struct phylink_config *config, unsigned long *supported,
135 struct phylink_link_state *state);
138 * mac_pcs_get_state() - Read the current inband link state from the hardware
139 * @config: a pointer to a &struct phylink_config.
140 * @state: a pointer to a &struct phylink_link_state.
142 * Read the current inband link state from the MAC PCS, reporting the
143 * current speed in @state->speed, duplex mode in @state->duplex, pause
144 * mode in @state->pause using the %MLO_PAUSE_RX and %MLO_PAUSE_TX bits,
145 * negotiation completion state in @state->an_complete, and link up state
146 * in @state->link. If possible, @state->lp_advertising should also be
149 void mac_pcs_get_state(struct phylink_config *config,
150 struct phylink_link_state *state);
153 * mac_config() - configure the MAC for the selected mode and state
154 * @config: a pointer to a &struct phylink_config.
155 * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
156 * @state: a pointer to a &struct phylink_link_state.
158 * Note - not all members of @state are valid. In particular,
159 * @state->lp_advertising, @state->link, @state->an_complete are never
160 * guaranteed to be correct, and so any mac_config() implementation must
161 * never reference these fields.
163 * (this requires a rewrite - please refer to mac_link_up() for situations
164 * where the PCS and MAC are not tightly integrated.)
166 * In all negotiation modes, as defined by @mode, @state->pause indicates the
167 * pause settings which should be applied as follows. If %MLO_PAUSE_AN is not
168 * set, %MLO_PAUSE_TX and %MLO_PAUSE_RX indicate whether the MAC should send
169 * pause frames and/or act on received pause frames respectively. Otherwise,
170 * the results of in-band negotiation/status from the MAC PCS should be used
171 * to control the MAC pause mode settings.
173 * The action performed depends on the currently selected mode:
175 * %MLO_AN_FIXED, %MLO_AN_PHY:
176 * Configure for non-inband negotiation mode, where the link settings
177 * are completely communicated via mac_link_up(). The physical link
178 * protocol from the MAC is specified by @state->interface.
180 * @state->advertising may be used, but is not required.
182 * Older drivers (prior to the mac_link_up() change) may use @state->speed,
183 * @state->duplex and @state->pause to configure the MAC, but this is
184 * deprecated; such drivers should be converted to use mac_link_up().
186 * Other members of @state must be ignored.
188 * Valid state members: interface, advertising.
189 * Deprecated state members: speed, duplex, pause.
192 * place the link in an inband negotiation mode (such as 802.3z
193 * 1000base-X or Cisco SGMII mode depending on the @state->interface
194 * mode). In both cases, link state management (whether the link
195 * is up or not) is performed by the MAC, and reported via the
196 * mac_pcs_get_state() callback. Changes in link state must be made
197 * by calling phylink_mac_change().
199 * Interface mode specific details are mentioned below.
201 * If in 802.3z mode, the link speed is fixed, dependent on the
202 * @state->interface. Duplex and pause modes are negotiated via
203 * the in-band configuration word. Advertised pause modes are set
204 * according to the @state->an_enabled and @state->advertising
205 * flags. Beware of MACs which only support full duplex at gigabit
208 * If in Cisco SGMII mode, the link speed and duplex mode are passed
209 * in the serial bitstream 16-bit configuration word, and the MAC
210 * should be configured to read these bits and acknowledge the
211 * configuration word. Nothing is advertised by the MAC. The MAC is
212 * responsible for reading the configuration word and configuring
213 * itself accordingly.
215 * Valid state members: interface, an_enabled, pause, advertising.
217 * Implementations are expected to update the MAC to reflect the
218 * requested settings - i.o.w., if nothing has changed between two
219 * calls, no action is expected. If only flow control settings have
220 * changed, flow control should be updated *without* taking the link
221 * down. This "update" behaviour is critical to avoid bouncing the
224 void mac_config(struct phylink_config *config, unsigned int mode,
225 const struct phylink_link_state *state);
228 * mac_an_restart() - restart 802.3z BaseX autonegotiation
229 * @config: a pointer to a &struct phylink_config.
231 void mac_an_restart(struct phylink_config *config);
234 * mac_link_down() - take the link down
235 * @config: a pointer to a &struct phylink_config.
236 * @mode: link autonegotiation mode
237 * @interface: link &typedef phy_interface_t mode
239 * If @mode is not an in-band negotiation mode (as defined by
240 * phylink_autoneg_inband()), force the link down and disable any
241 * Energy Efficient Ethernet MAC configuration. Interface type
242 * selection must be done in mac_config().
244 void mac_link_down(struct phylink_config *config, unsigned int mode,
245 phy_interface_t interface);
248 * mac_link_up() - allow the link to come up
249 * @config: a pointer to a &struct phylink_config.
250 * @phy: any attached phy
251 * @mode: link autonegotiation mode
252 * @interface: link &typedef phy_interface_t mode
254 * @duplex: link duplex
255 * @tx_pause: link transmit pause enablement status
256 * @rx_pause: link receive pause enablement status
258 * Configure the MAC for an established link.
260 * @speed, @duplex, @tx_pause and @rx_pause indicate the finalised link
261 * settings, and should be used to configure the MAC block appropriately
262 * where these settings are not automatically conveyed from the PCS block,
263 * or if in-band negotiation (as defined by phylink_autoneg_inband(@mode))
266 * Note that when 802.3z in-band negotiation is in use, it is possible
267 * that the user wishes to override the pause settings, and this should
268 * be allowed when considering the implementation of this method.
270 * If in-band negotiation mode is disabled, allow the link to come up. If
271 * @phy is non-%NULL, configure Energy Efficient Ethernet by calling
272 * phy_init_eee() and perform appropriate MAC configuration for EEE.
273 * Interface type selection must be done in mac_config().
275 void mac_link_up(struct phylink_config *config, struct phy_device *phy,
276 unsigned int mode, phy_interface_t interface,
277 int speed, int duplex, bool tx_pause, bool rx_pause);
281 * struct phylink_pcs_ops - MAC PCS operations structure.
282 * @pcs_get_state: read the current MAC PCS link state from the hardware.
283 * @pcs_config: configure the MAC PCS for the selected mode and state.
284 * @pcs_an_restart: restart 802.3z BaseX autonegotiation.
285 * @pcs_link_up: program the PCS for the resolved link configuration
288 struct phylink_pcs_ops {
289 void (*pcs_get_state)(struct phylink_config *config,
290 struct phylink_link_state *state);
291 int (*pcs_config)(struct phylink_config *config, unsigned int mode,
292 phy_interface_t interface,
293 const unsigned long *advertising);
294 void (*pcs_an_restart)(struct phylink_config *config);
295 void (*pcs_link_up)(struct phylink_config *config, unsigned int mode,
296 phy_interface_t interface, int speed, int duplex);
299 #if 0 /* For kernel-doc purposes only. */
301 * pcs_get_state() - Read the current inband link state from the hardware
302 * @config: a pointer to a &struct phylink_config.
303 * @state: a pointer to a &struct phylink_link_state.
305 * Read the current inband link state from the MAC PCS, reporting the
306 * current speed in @state->speed, duplex mode in @state->duplex, pause
307 * mode in @state->pause using the %MLO_PAUSE_RX and %MLO_PAUSE_TX bits,
308 * negotiation completion state in @state->an_complete, and link up state
309 * in @state->link. If possible, @state->lp_advertising should also be
312 * When present, this overrides mac_pcs_get_state() in &struct
315 void pcs_get_state(struct phylink_config *config,
316 struct phylink_link_state *state);
319 * pcs_config() - Configure the PCS mode and advertisement
320 * @config: a pointer to a &struct phylink_config.
321 * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
322 * @interface: interface mode to be used
323 * @advertising: adertisement ethtool link mode mask
325 * Configure the PCS for the operating mode, the interface mode, and set
326 * the advertisement mask.
328 * When operating in %MLO_AN_INBAND, inband should always be enabled,
329 * otherwise inband should be disabled.
331 * For SGMII, there is no advertisement from the MAC side, the PCS should
332 * be programmed to acknowledge the inband word from the PHY.
334 * For 1000BASE-X, the advertisement should be programmed into the PCS.
336 * For most 10GBASE-R, there is no advertisement.
338 int (*pcs_config)(struct phylink_config *config, unsigned int mode,
339 phy_interface_t interface, const unsigned long *advertising);
342 * pcs_an_restart() - restart 802.3z BaseX autonegotiation
343 * @config: a pointer to a &struct phylink_config.
345 * When PCS ops are present, this overrides mac_an_restart() in &struct
348 void (*pcs_an_restart)(struct phylink_config *config);
351 * pcs_link_up() - program the PCS for the resolved link configuration
352 * @config: a pointer to a &struct phylink_config.
353 * @mode: link autonegotiation mode
354 * @interface: link &typedef phy_interface_t mode
356 * @duplex: link duplex
358 * This call will be made just before mac_link_up() to inform the PCS of
359 * the resolved link parameters. For example, a PCS operating in SGMII
360 * mode without in-band AN needs to be manually configured for the link
361 * and duplex setting. Otherwise, this should be a no-op.
363 void (*pcs_link_up)(struct phylink_config *config, unsigned int mode,
364 phy_interface_t interface, int speed, int duplex);
367 struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,
368 phy_interface_t iface,
369 const struct phylink_mac_ops *mac_ops);
370 void phylink_add_pcs(struct phylink *, const struct phylink_pcs_ops *ops);
371 void phylink_destroy(struct phylink *);
373 int phylink_connect_phy(struct phylink *, struct phy_device *);
374 int phylink_of_phy_connect(struct phylink *, struct device_node *, u32 flags);
375 void phylink_disconnect_phy(struct phylink *);
377 void phylink_mac_change(struct phylink *, bool up);
379 void phylink_start(struct phylink *);
380 void phylink_stop(struct phylink *);
382 void phylink_ethtool_get_wol(struct phylink *, struct ethtool_wolinfo *);
383 int phylink_ethtool_set_wol(struct phylink *, struct ethtool_wolinfo *);
385 int phylink_ethtool_ksettings_get(struct phylink *,
386 struct ethtool_link_ksettings *);
387 int phylink_ethtool_ksettings_set(struct phylink *,
388 const struct ethtool_link_ksettings *);
389 int phylink_ethtool_nway_reset(struct phylink *);
390 void phylink_ethtool_get_pauseparam(struct phylink *,
391 struct ethtool_pauseparam *);
392 int phylink_ethtool_set_pauseparam(struct phylink *,
393 struct ethtool_pauseparam *);
394 int phylink_get_eee_err(struct phylink *);
395 int phylink_init_eee(struct phylink *, bool);
396 int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *);
397 int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *);
398 int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
400 #define phylink_zero(bm) \
401 bitmap_zero(bm, __ETHTOOL_LINK_MODE_MASK_NBITS)
402 #define __phylink_do_bit(op, bm, mode) \
403 op(ETHTOOL_LINK_MODE_ ## mode ## _BIT, bm)
405 #define phylink_set(bm, mode) __phylink_do_bit(__set_bit, bm, mode)
406 #define phylink_clear(bm, mode) __phylink_do_bit(__clear_bit, bm, mode)
407 #define phylink_test(bm, mode) __phylink_do_bit(test_bit, bm, mode)
409 void phylink_set_port_modes(unsigned long *bits);
410 void phylink_helper_basex_speed(struct phylink_link_state *state);
412 void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs,
413 struct phylink_link_state *state);
414 int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
415 phy_interface_t interface,
416 const unsigned long *advertising);
417 void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);
419 void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
420 struct phylink_link_state *state);