dev/e1000/e1000_mac.c

702  *  e1000_check_for_copper_link_generic - Check for link (Copper)
705  *  Checks to see of the link status of the hardware has changed.  If a
706  *  change in link status has been detected, then we read the PHY registers
707  *  to get the current speed/duplex if link exists.
713 	bool link;
718 	 * has completed and/or if our link status has changed.  The
726 	 * link.  If so, then we want to get the current speed/duplex
729 	ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
733 	if (!link)
734 		return E1000_SUCCESS; /* No link detected */
739 	 * immediately after link-up
744 	 * we have already determined whether we have link or not.
758 	 * different link partner.
768  *  e1000_check_for_fiber_link_generic - Check for link (Fiber)
771  *  Checks for link up on the hardware.  If link is not up and we have
772  *  a signal, then we need to force link up.
788 	/* If we don't have link (auto-negotiation failed or link partner
790 	 * and our link partner is not trying to auto-negotiate with us (we
791 	 * are receiving idles or data), we need to force link up. We also
802 		DEBUGOUT("NOT Rx'ing /C/, disable AutoNeg and force link.\n");
807 		/* Force link-up and also force full-duplex. */
812 		/* Configure Flow Control after forcing link up. */
819 		/* If we are forcing link and we are receiving /C/ ordered
821 		 * and disable forced link in the Device Control register
822 		 * in an attempt to auto-negotiate with our link partner.
824 		DEBUGOUT("Rx'ing /C/, enable AutoNeg and stop forcing link.\n");
835  *  e1000_check_for_serdes_link_generic - Check for link (Serdes)
838  *  Checks for link up on the hardware.  If link is not up and we have
839  *  a signal, then we need to force link up.
855 	/* If we don't have link (auto-negotiation failed or link partner
856 	 * cannot auto-negotiate), and our link partner is not trying to
858 	 * we need to force link up. We also need to give auto-negotiation
867 		DEBUGOUT("NOT Rx'ing /C/, disable AutoNeg and force link.\n");
872 		/* Force link-up and also force full-duplex. */
877 		/* Configure Flow Control after forcing link up. */
884 		/* If we are forcing link and we are receiving /C/ ordered
886 		 * and disable forced link in the Device Control register
887 		 * in an attempt to auto-negotiate with our link partner.
889 		DEBUGOUT("Rx'ing /C/, enable AutoNeg and stop forcing link.\n");
895 		/* If we force link for non-auto-negotiation switch, check
896 		 * link status based on MAC synchronization for internal
993  *  e1000_setup_link_generic - Setup flow control and link settings
997  *  control.  Calls the appropriate media-specific link configuration
998  *  function.  Assuming the adapter has a valid link partner, a valid link
1008 	/* In the case of the phy reset being blocked, we already have a link.
1024 	 * on the link partner's capabilities, we may or may not use this mode.
1031 	/* Call the necessary media_type subroutine to configure the link. */
1121  *  e1000_poll_fiber_serdes_link_generic - Poll for link up
1124  *  Polls for link up by reading the status register, if link fails to come
1125  *  up with auto-negotiation, then the link is forced if a signal is detected.
1137 	 * Status Register.  Time-out if a link isn't seen in 500 milliseconds
1148 		DEBUGOUT("Never got a valid link from auto-neg!!!\n");
1150 		/* AutoNeg failed to achieve a link, so we'll call
1152 		 * link up if we detect a signal. This will allow us to
1153 		 * communicate with non-autonegotiating link partners.
1157 			DEBUGOUT("Error while checking for link\n");
1170  *  e1000_setup_fiber_serdes_link_generic - Setup link for fiber/serdes
1174  *  links.  Upon successful setup, poll for link.
1185 	/* Take the link out of reset */
1194 	/* Since auto-negotiation is enabled, take the link out of reset (the
1195 	 * link will be in reset, because we previously reset the chip). This
1197 	 * then the link-up status bit will be set and the flow control enable
1225  *  during link setup.
1287  *  also configure these bits when link is forced on a fiber connection.
1297 	/* Because we didn't get link via the internal auto-negotiation
1298 	 * mechanism (we either forced link or we got link via PHY
1342  *  e1000_config_fc_after_link_up_generic - Configures flow control after link
1345  *  Checks the status of auto-negotiation after link up to ensure that the
1346  *  speed and duplex were not forced.  If the link needed to be forced, then
1348  *  and did not fail, then we configure flow control based on our link
1362 	 * so we had to force link.  In this case, we need to force the
1381 	 * has completed, and if so, how the PHY and link partner has
1419 		 * for both the PHY and the link partner.  The following
1506 			DEBUGOUT("Error getting link speed and duplex\n");
1525 	 * has completed, and if so, how the PHY and link partner has
1552 		 * for both the PHY and the link partner.  The following