lwn.git/drivers/net/phy, branch v6.11-rc1

Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2024-07-25T17:42:22+00:00

Pull driver core updates from Greg KH: "Here is the big set of driver core changes for 6.11-rc1. Lots of stuff in here, with not a huge diffstat, but apis are evolving which required lots of files to be touched. Highlights of the changes in here are: - platform remove callback api final fixups (Uwe took many releases to get here, finally!) - Rust bindings for basic firmware apis and initial driver-core interactions. It's not all that useful for a "write a whole driver in rust" type of thing, but the firmware bindings do help out the phy rust drivers, and the driver core bindings give a solid base on which others can start their work. There is still a long way to go here before we have a multitude of rust drivers being added, but it's a great first step. - driver core const api changes. This reached across all bus types, and there are some fix-ups for some not-common bus types that linux-next and 0-day testing shook out. This work is being done to help make the rust bindings more safe, as well as the C code, moving toward the end-goal of allowing us to put driver structures into read-only memory. We aren't there yet, but are getting closer. - minor devres cleanups and fixes found by code inspection - arch_topology minor changes - other minor driver core cleanups All of these have been in linux-next for a very long time with no reported problems" * tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits) ARM: sa1100: make match function take a const pointer sysfs/cpu: Make crash_hotplug attribute world-readable dio: Have dio_bus_match() callback take a const * zorro: make match function take a const pointer driver core: module: make module_[add|remove]_driver take a const * driver core: make driver_find_device() take a const * driver core: make driver_[create|remove]_file take a const * firmware_loader: fix soundness issue in `request_internal` firmware_loader: annotate doctests as `no_run` devres: Correct code style for functions that return a pointer type devres: Initialize an uninitialized struct member devres: Fix memory leakage caused by driver API devm_free_percpu() devres: Fix devm_krealloc() wasting memory driver core: platform: Switch to use kmemdup_array() driver core: have match() callback in struct bus_type take a const * MAINTAINERS: add Rust device abstractions to DRIVER CORE device: rust: improve safety comments MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER firmware: rust: improve safety comments ...

Merge branch 'net-make-timestamping-selectable'

2024-07-15T15:02:30+00:00

First part of "net: Make timestamping selectable" from Kory Maincent. Change the driver-facing type already to lower rebasing pain. Link: https://lore.kernel.org/20240709-feature_ptp_netnext-v17-0-b5317f50df2a@bootlin.com/ Signed-off-by: Jakub Kicinski

net: Add struct kernel_ethtool_ts_info

2024-07-15T15:02:26+00:00

In prevision to add new UAPI for hwtstamp we will be limited to the struct ethtool_ts_info that is currently passed in fixed binary format through the ETHTOOL_GET_TS_INFO ethtool ioctl. It would be good if new kernel code already started operating on an extensible kernel variant of that structure, similar in concept to struct kernel_hwtstamp_config vs struct hwtstamp_config. Since struct ethtool_ts_info is in include/uapi/linux/ethtool.h, here we introduce the kernel-only structure in include/linux/ethtool.h. The manual copy is then made in the function called by ETHTOOL_GET_TS_INFO. Acked-by: Shannon Nelson Acked-by: Alexandra Winter Signed-off-by: Kory Maincent Link: https://patch.msgid.link/20240709-feature_ptp_netnext-v17-6-b5317f50df2a@bootlin.com Signed-off-by: Jakub Kicinski

net: Change the API of PHY default timestamp to MAC

2024-07-15T15:02:26+00:00

Change the API to select MAC default time stamping instead of the PHY. Indeed the PHY is closer to the wire therefore theoretically it has less delay than the MAC timestamping but the reality is different. Due to lower time stamping clock frequency, latency in the MDIO bus and no PHC hardware synchronization between different PHY, the PHY PTP is often less precise than the MAC. The exception is for PHY designed specially for PTP case but these devices are not very widespread. For not breaking the compatibility default_timestamp flag has been introduced in phy_device that is set by the phy driver to know we are using the old API behavior. Reviewed-by: Rahul Rameshbabu Signed-off-by: Kory Maincent Link: https://patch.msgid.link/20240709-feature_ptp_netnext-v17-4-b5317f50df2a@bootlin.com Signed-off-by: Jakub Kicinski

net: phy: bcm-phy-lib: Implement BroadR-Reach link modes

2024-07-15T03:38:35+00:00

Implement single-pair BroadR-Reach modes on bcm5481x PHY by Broadcom. Create set of functions alternative to IEEE 802.3 to handle configuration of these modes on compatible Broadcom PHYs. There is only subset of capabilities supported because of limited collection of hardware available for the development. For BroadR-Reach capable PHYs, the LRE (Long Reach Ethernet) alternative register set is handled. Only bcm54811 PHY is verified, for bcm54810, there is some support possible but untested. There is no auto-negotiation of the link parameters (called LDS in the Broadcom terminology, Long-Distance Signaling) for bcm54811. It should be possible to enable LDS for bcm54810. Signed-off-by: Kamil Horák (2N) Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20240712150709.3134474-5-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: bcm54811: New link mode for BroadR-Reach

2024-07-15T03:38:34+00:00

Introduce a new link mode necessary for 10 MBit single-pair connection in BroadR-Reach mode on bcm5481x PHY by Broadcom. This new link mode, 10baseT1BRR, is known as 1BR10 in the Broadcom terminology. Another link mode to be used is 1BR100 and it is already present as 100baseT1, because Broadcom's 1BR100 became 100baseT1 (IEEE 802.3bw). Signed-off-by: Kamil Horák (2N) Reviewed-by: Florian Fainelli Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20240712150709.3134474-2-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: dp83td510: add cable testing support

2024-07-13T23:00:44+00:00

This patch implements the TDR test procedure as described in "Application Note DP83TD510E Cable Diagnostics Toolkit revC", section 3.2. The procedure was tested with "draka 08 signalkabel 2x0.8mm". The reported cable length was 5 meters more for each 20 meters of actual cable length. For instance, a 20-meter cable showed as 25 meters, and a 40-meter cable showed as 50 meters. Since other parts of the diagnostics provided by this PHY (e.g., Active Link Cable Diagnostics) require accurate cable characterization to provide proper results, this tuning can be implemented in a separate patch/interface. Signed-off-by: Oleksij Rempel changes v2: - add comments - change post silence time to 1000ms Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20240712152848.2479912-1-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2024-07-11T19:58:13+00:00

Cross-merge networking fixes after downstream PR. Conflicts: net/sched/act_ct.c 26488172b029 ("net/sched: Fix UAF when resolving a clash") 3abbd7ed8b76 ("act_ct: prepare for stolen verdict coming from conntrack and nat engine") No adjacent changes. Signed-off-by: Jakub Kicinski

net: phy: aquantia: add support for aqr115c

2024-07-10T03:57:28+00:00

Add support for a new model to the Aquantia driver. This PHY supports 2.5 gigabit speeds. The PHY mode is referred to by the manufacturer as Overclocked SGMII (OCSGMII) but this actually is just 2500BASEX without in-band signalling so reuse the existing mode to avoid changing the uAPI. Signed-off-by: Bartosz Golaszewski Signed-off-by: David S. Miller

net: phy: aquantia: wait for the GLOBAL_CFG to start returning real values

2024-07-10T03:57:28+00:00

When the PHY is first coming up (or resuming from suspend), it's possible that although the FW status shows as running, we still see zeroes in the GLOBAL_CFG set of registers and cannot determine available modes. Since all models support 10M, add a poll and wait the config to become available. Signed-off-by: Bartosz Golaszewski Signed-off-by: David S. Miller