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2020-01-05net: phylink: add support for polling MAC PCSVladimir Oltean1-1/+2
Some MAC PCS blocks are unable to provide interrupts when their status changes. As we already have support in phylink for polling status, use this to provide a hook for MACs to enable polling mode. The patch idea was picked up from Russell King's suggestion on the macb phylink patch thread here [0] but the implementation was changed. Instead of introducing a new phylink_start_poll() function, which would make the implementation cumbersome for common PHYLINK implementations for multiple types of devices, like DSA, just add a boolean property to the phylink_config structure, which is just as backwards-compatible. https://lkml.org/lkml/2019/12/16/603 Suggested-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05net: phylink: make QSGMII a valid PHY mode for in-band ANVladimir Oltean1-0/+1
QSGMII is a SerDes protocol clocked at 5 Gbaud (4 times higher than SGMII which is clocked at 1.25 Gbaud), with the same 8b/10b encoding and some extra symbols for synchronization. Logically it offers 4 SGMII interfaces multiplexed onto the same physical lanes. Each MAC PCS has its own in-band AN process with the system side of the QSGMII PHY, which is identical to the regular SGMII AN process. So allow QSGMII as a valid in-band AN mode, since it is no different from software perspective from regular SGMII. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05net: switch to using PHY_INTERFACE_MODE_10GBASER rather than 10GKRRussell King5-10/+15
Switch network drivers, phy drivers, and SFP/phylink over to use the more correct 10GBASE-R, rather than 10GBASE-KR. 10GBASE-KR is backplane ethernet, which is 10GBASE-R with autonegotiation on top, which our current usage on the affected platforms does not have. The only remaining user of PHY_INTERFACE_MODE_10GKR is the Aquantia PHY, which has a separate mode for 10GBASE-KR. For Marvell mvpp2, we detect 10GBASE-KR, and rewrite it to 10GBASE-R for compatibility with existing DT - this is the only network driver at present that makes use of PHY_INTERFACE_MODE_10GKR. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05net: phy: fixed_phy: switch to using fwnode_gpiod_get_indexDmitry Torokhov1-2/+2
gpiod_get_from_of_node() is being retired in favor of [devm_]fwnode_gpiod_get_index(), that behaves similar to [devm_]gpiod_get_index(), but can work with arbitrary firmware node. It will also be able to support secondary software nodes. Let's switch this driver over. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05net: phy: fixed_phy: fix use-after-free when checking link GPIODmitry Torokhov1-5/+2
If we fail to locate GPIO for any reason other than deferral or not-found-GPIO, we try to print device tree node info, however if might be freed already as we called of_node_put() on it. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-05net: phylink: switch to using fwnode_gpiod_get_index()Dmitry Torokhov1-2/+2
Instead of fwnode_get_named_gpiod() that I plan to hide away, let's use the new fwnode_gpiod_get_index() that mimics gpiod_get_index(), but works with arbitrary firmware node. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller1-0/+2
Simple overlapping changes in bpf land wrt. bpf_helper_defs.h handling. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-26net: phy: aquantia: add suspend / resume ops for AQR105Madalin Bucur1-0/+2
The suspend/resume code for AQR107 works on AQR105 too. This patch fixes issues with the partner not seeing the link down when the interface using AQR105 is brought down. Fixes: bee8259dd31f ("net: phy: add driver for aquantia phy") Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-26net: phy: realtek: add support for configuring the RX delay on RTL8211FMartin Blumenstingl1-10/+36
On RTL8211F the RX and TX delays (2ns) can be configured in two ways: - pin strapping (RXD1 for the TX delay and RXD0 for the RX delay, LOW means "off" and HIGH means "on") which is read during PHY reset - using software to configure the TX and RX delay registers So far only the configuration using pin strapping has been supported. Add support for enabling or disabling the RGMII RX delay based on the phy-mode to be able to get the RX delay into a known state. This is important because the RX delay has to be coordinated between the PHY, MAC and the PCB design (trace length). With an invalid RX delay applied (for example if both PHY and MAC add a 2ns RX delay) Ethernet may not work at all. Also add debug logging when configuring the RX delay (just like the TX delay) because this is a common source of problems. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-26net: phy: realtek: add logging for the RGMII TX delay configurationMartin Blumenstingl1-1/+18
RGMII requires a delay of 2ns between the data and the clock signal. There are at least three ways this can happen. One possibility is by having the PHY generate this delay. This is a common source for problems (for example with slow TX speeds or packet loss when sending data). The TX delay configuration of the RTL8211F PHY can be set either by pin-strappping the RXD1 pin (HIGH means enabled, LOW means disabled) or through configuring a paged register. The setting from the RXD1 pin is also reflected in the register. Add debug logging to the TX delay configuration on RTL8211F so it's easier to spot these issues (for example if the TX delay is enabled for both, the RTL8211F PHY and the MAC). This is especially helpful because there is no public datasheet for the RTL8211F PHY available with all the RX/TX delay specifics. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-25net: mdio: of: Register discovered MII time stampers.Richard Cochran1-0/+3
When parsing a PHY node, register its time stamper, if any, and attach the instance to the PHY device. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-25net: Add a layer for non-PHY MII time stamping drivers.Richard Cochran2-0/+127
While PHY time stamping drivers can simply attach their interface directly to the PHY instance, stand alone drivers require support in order to manage their services. Non-PHY MII time stamping drivers have a control interface over another bus like I2C, SPI, UART, or via a memory mapped peripheral. The controller device will be associated with one or more time stamping channels, each of which sits snoops in on a MII bus. This patch provides a glue layer that will enable time stamping channels to find their controlling device. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-25net: Introduce a new MII time stamping interface.Richard Cochran3-17/+28
Currently the stack supports time stamping in PHY devices. However, there are newer, non-PHY devices that can snoop an MII bus and provide time stamps. In order to support such devices, this patch introduces a new interface to be used by both PHY and non-PHY devices. In addition, the one and only user of the old PHY time stamping API is converted to the new interface. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-25net: phy: dp83640: Move the probe and remove methods around.Richard Cochran1-90/+90
An upcoming patch will change how the PHY time stamping functions are registered with the networking stack, and adapting this driver would entail adding forward declarations for four time stamping methods. However, forward declarations are considered to be stylistic defects. This patch avoids the issue by moving the probe and remove methods immediately above the phy_driver interface structure. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2-6/+5
Mere overlapping changes in the conflicts here. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-20net: phy: ensure that phy IDs are correctly typedRussell King1-4/+4
PHY IDs are 32-bit unsigned quantities. Ensure that they are always treated as such, and not passed around as "int"s. Fixes: 13d0ab6750b2 ("net: phy: check return code when requesting PHY driver module") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: sfp: report error on failure to read sfp soft statusRussell King1-2/+9
Report a rate-limited error if we fail to read the SFP soft status, and preserve the current status in that case. This avoids I2C bus errors from triggering a link flap. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: use genphy_check_and_restart_aneg()Russell King1-20/+1
Use the helper to check and restart autonegotiation for the marvell fiber page negotiation setting. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: use phy_modify_changed()Russell King1-16/+10
Use phy_modify_changed() to change the fiber advertisement register rather than open coding this functionality. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: use existing clause 37 definitionsRussell King1-18/+8
Use existing clause 37 advertising/link partner definitions rather than private ones for the advertisement registers. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: consolidate phy status readingRussell King1-43/+17
marvell_read_status_page_an() always reads the PHY status register, but marvell_update_link() has already done this. Rather than wastefully reading the register twice in quick succession, read it once in marvell_read_status_page() and use the result for both. This makes marvell_update_link() rather pointless, so move it into marvell_read_status_page(). Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: use positive logic for link stateRussell King1-4/+3
Rather than using negative logic: if (there is no link) set link = 0 else set link = 1 use the more natural positive logic: if (there is link) set link = 1 else set link = 0 Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: initialise link partner state earlierRussell King1-20/+5
Move the initialisation of the link partner state earlier, inside marvell_read_status_page(), so we don't have the same initialisation scattered amongst the other files. This is in a similar place to the genphy implementation, so would result in the same behaviour if a PHY read error occurs. This allows us to get rid of marvell_read_status_page_fixed(), which became a pointless wrapper around genphy_read_status_fixed(). Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: marvell: rearrange to use genphy_read_lpa()Russell King1-34/+32
Rearrange the Marvell PHY driver to use genphy_read_lpa() rather than open-coding this functionality. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: provide and use genphy_read_status_fixed()Russell King3-47/+40
There are two drivers and generic code which contain exactly the same code to read the status of a PHY operating without autonegotiation enabled. Rather than duplicate this code, provide a helper to read this information. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: add genphy_check_and_restart_aneg()Russell King1-17/+31
Add a helper for restarting autonegotiation(), similar to the clause 45 variant. Use it in __genphy_config_aneg() Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: use phy_resolve_aneg_pause()Russell King3-14/+3
Several drivers code their own version of this, working from the LPA register, after setting the ethtool link partner advertisement bitmask. Use the generic function instead. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-19net: phy: remove redundant .aneg_done initialisersRussell King2-7/+0
Remove initialisers that set .aneg_done to genphy_aneg_done - this is the default for clause 22 PHYs, so the initialiser is redundant. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-17net: phylink: extend clause 45 PHY validation workaroundRussell King1-9/+13
Commit e45d1f5288b8 ("net: phylink: support Clause 45 PHYs on SFP+ modules") added a workaround to support clause 45 PHYs which dynamically switch their interface mode on SFP+ modules. This was implemented by validating the PHYs supported/advertising using PHY_INTERFACE_MODE_NA, rather than the specific interface mode that we attached the PHY with. However, we already have a situation where phylink is used to connect a Marvell 88X3310 PHY which also behaves in exactly the same way, but which seemingly doesn't need this. The reason seems to be that the mvpp2 driver sets a whole bunch of link modes for PHY_INTERFACE_MODE_10GKR down to 10Mb/s, despite 10GBASE-R not actually supporting anything but 10Gb/s speeds. When testing with drivers that (correctly) take the mvneta approach, where the validate() method only returns what can be supported / advertised for the specified link mode, we find that Clause 45 PHYs do not behave as we expect: their advertisement is restricted to what the current link will support, rather than what the PHY supports through its dynamic switching. Extend this workaround to all such cases; if we have a Clause 45 PHY attaching via any means, except in USXGMII, XAUI and RXAUI which are all unable to support this dynamic switching or have other solutions to it, then we need to validate using PHY_INTERFACE_MODE_NA. This should allow mvpp2 to switch to a more conformant validate() implementation. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-17net: phylink: improve clause 45 PHY ksettings_set implementationRussell King1-31/+53
While testing ethtool with the Methode DM7052 module, it was noticed that attempting to set the advertising mask results in the mask being truncated to the support offered by the currently chosen PHY interface mode. When a PHY dynamically changes the PHY interface mode, limiting the advertising mask in this way is not correct - if the PHY happened to negotiate 10GBASE-T, and selected 10GBASE-R as the host interface, we don't want to restrict the advertisement to just 10GBASE-* modes. Rework setting the advertisement to take account of this; do not pass the requested advertisement through phylink_validate(), but rely on the advertisement restriction (supported mask) set when the PHY was initially setup. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-14net: phylink: fix interface passed to mac_link_upRussell King1-2/+1
A mismerge between the following two commits: c678726305b9 ("net: phylink: ensure consistent phy interface mode") 27755ff88c0e ("net: phylink: Add phylink_mac_link_{up, down} wrapper functions") resulted in the wrong interface being passed to the mac_link_up() function. Fix this up. Fixes: b4b12b0d2f02 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-12-14net: phylink: propagate phy_attach_direct() return codeRussell King1-3/+6
of_phy_attach() hides the return value of phy_attach_direct(), forcing us to return a "generic" ENODEV error code that is indistinguishable from the lack-of-phy-property case. Switch to using of_phy_find_device() to find the PHY device, and then propagating any phy_attach_direct() error back to the caller. Link: https://lore.kernel.org/lkml/20191210113829.GT25745@shell.armlinux.org.uk Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-12-14net: phy: dp83869: Remove unneeded semicolonzhengbin1-1/+1
Fixes coccicheck warning: drivers/net/phy/dp83869.c:337:2-3: Unneeded semicolon Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-12-11net: sfp: re-attempt probing for phyRussell King1-17/+42
Some 1000BASE-T PHY modules take a while for the PHY to wake up. Retry the probe a number of times before deciding that the module has no PHY. Tested with: Sourcephotonics SPGBTXCNFC - PHY takes less than 50ms to respond. Champion One 1000SFPT - PHY takes about 200ms to respond. Mikrotik S-RJ01 - no PHY Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: error handling for phy probeRussell King1-9/+17
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: rename sm_retriesRussell King1-5/+5
Rename sm_retries as sm_fault_retries, as this is what this member is tracking. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: use a definition for the fault recovery attemptsRussell King1-3/+11
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: add support for Clause 45 PHYsRussell King1-4/+40
Some SFP+ modules have a Clause 45 PHY onboard, which is accessible via the normal I2C address. Detect 10G BASE-T PHYs which may have an accessible PHY and probe for it. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phy: add Broadcom BCM84881 PHY driverRussell King3-0/+276
Add a rudimentary Clause 45 driver for the BCM84881 PHY, found on Methode DM7052 SFPs. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: make Broadcom BCM84881 based SFPs workRussell King1-2/+16
The Broadcom BCM84881 does not appear to send the SGMII control word when operating in SGMII mode, which causes network adapters to fail to link with the PHY, or decide to operate at fixed 1G speed, even if the PHY negotiated 100M. Work around this by detecting the Broadcom BCM84881 and switch to phy mode rather than inband mode. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: delay MAC configuration for copper SFP modulesRussell King2-10/+71
Knowing whether we need to delay the MAC configuration because a module may have a PHY is useful to phylink to allow NBASE-T modules to work on systems supporting no more than 2.5G speeds. This commit allows us to delay such configuration until after the PHY has been probed by recording the parsed capabilities, and if the module may have a PHY, doing no more until the module_start() notification is called. At that point, we either have a PHY, or we don't. We move the PHY-based setup a little later, and use the PHYs support capabilities rather than the EEPROM parsed capabilities to determine whether we can support the PHY. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: split phylink_sfp_module_insert()Russell King1-19/+28
Split out the configuration step from phylink_sfp_module_insert() so we can re-use this later. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: split link_an_mode configured and current settingsRussell King1-28/+31
Split link_an_mode between the configured setting and the current operating setting. This is an important distinction to make when we need to configure PHY mode for a plugged SFP+ module that does not use in-band signalling. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: support Clause 45 PHYs on SFP+ modulesRussell King1-5/+16
Some SFP+ modules have Clause 45 PHYs embedded on them, which need a little more handling in order to ensure that they are correctly setup, as they switch the PHY link mode according to the negotiated speed. With Clause 22 PHYs, we assumed that they would operate in SGMII mode, but this assumption is now false. Adapt phylink to support Clause 45 PHYs on SFP+ modules. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: phylink: re-split __phylink_connect_phy()Russell King1-15/+24
In order to support Clause 45 PHYs on SFP+ modules, which have an indeterminant phy interface mode, we need to be able to call phylink_bringup_phy() with a different interface mode to that used when binding the PHY. Reduce __phylink_connect_phy() to an attach operation, and move the call to phylink_bringup_phy() to its call sites. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: mdio-i2c: add support for Clause 45 accessesRussell King1-8/+20
Some SFP+ modules have PHYs on them just like SFP modules do, except they are Clause 45 PHYs. The I2C protocol used to access them is modified slightly in order to send the device address and 16-bit register index. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: move phy_start()/phy_stop() to phylinkRussell King2-2/+22
Move phy_start() and phy_stop() into the module_start and module_stop notifications in phylink, rather than having them in the SFP code. This gives phylink responsibility for controlling the PHY, rather than having SFP start and stop the PHY state machine. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: add module start/stop upstream notificationsRussell King3-0/+31
When dealing with some copper modules, we can't positively know the module capabilities are until we have probed the PHY. Without the full capabilities, we may end up failing a module that we could otherwise drive with a restricted set of capabilities. An example of this would be a module with a NBASE-T PHY plugged into a host that supports phy interface modes 2500BASE-X and SGMII. The PHY supports 10GBASE-R, 5000BASE-X, 2500BASE-X, SGMII interface modes, which means a subset of the capabilities are compatible with the host. However, reading the module EEPROM leads us to believe that the module only supports ethtool link mode 10GBASE-T, which is incompatible with the host - and thus results in the module being rejected. This patch adds an extra notification which are triggered after the SFP module's PHY probe, and a corresponding notification just before the PHY is removed. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: add more extended compliance codesRussell King2-26/+38
SFF-8024 is used to define various constants re-used in several SFF SFP-related specifications. Split these constants from the enum, and rename them to indicate that they're defined by SFF-8024. Add and use updated SFF-8024 extended compliance code definitions for 10GBASE-T, 5GBASE-T and 2.5GBASE-T modules. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-11net: sfp: derive interface mode from ethtool link modesRussell King3-9/+6
We don't need the EEPROM ID to derive the phy interface mode as we can derive it merely from the ethtool link modes. Remove the EEPROM ID argument to sfp_select_interface(). Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
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