kernel.git/drivers/net/dsa/bcm_sf2.h, branch linux-rolling-stable

net: dsa: use ethtool string helpers

2024-11-03T18:36:34Z

These are the preferred way to copy ethtool strings. Avoids incrementing pointers all over the place. Signed-off-by: Rosen Penev (for hellcreek driver) Reviewed-by: Kurt Kanzenbach Link: https://patch.msgid.link/20241028044828.1639668-1-rosenp@gmail.com Signed-off-by: Jakub Kicinski

net: dsa: bcm_sf2: fix crossbar port bitwidth logic

2024-10-04T23:16:15Z

The SF2 crossbar register is a packed bitfield, giving the index of the external port selected for each of the internal ports. On BCM4908 (the only currently-supported switch family with a crossbar), there are 2 internal ports and 3 external ports, so there are 2 bits per internal port. The driver currently conflates the "bits per port" and "number of ports" concepts, lumping both into the `num_crossbar_int_ports` field. Since it is currently only possible for either of these counts to have a value of 2, there is no behavioral error resulting from this situation for now. Make the code more readable (and support the future possibility of larger crossbars) by adding a `num_crossbar_ext_bits` field to represent the "bits per port" count and relying on this where appropriate instead. Signed-off-by: Sam Edwards Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20241003212301.1339647-1-CFSworks@gmail.com Signed-off-by: Jakub Kicinski

net: dsa: bcm_sf2: drop priv->master_mii_dn

2024-01-05T11:56:36Z

There used to be a of_node_put(priv->master_mii_dn) call in bcm_sf2_mdio_unregister(), which was accidentally deleted in commit 6ca80638b90c ("net: dsa: Use conduit and user terms"). But it's not needed - we don't need to hold a reference on the "brcm,unimac-mdio" OF node for that long, since we don't do anything with it. We can release it as soon as we finish bcm_sf2_mdio_register(). Also reduce "if (err && dn)" to just "if (err)". We know "dn", aka the former priv->master_mii_dn, is non-NULL. Otherwise, of_mdio_find_bus(dn) would not have been able to find the bus behind "brcm,unimac-mdio". Signed-off-by: Vladimir Oltean Reviewed-by: Alvin Šipraga Reviewed-by: Florian Fainelli Tested-by: Florian Fainelli Reviewed-by: Luiz Angelo Daros de Luca Signed-off-by: David S. Miller

net: dsa: Use conduit and user terms

2023-10-24T20:08:14Z

Use more inclusive terms throughout the DSA subsystem by moving away from "master" which is replaced by "conduit" and "slave" which is replaced by "user". No functional changes. Acked-by: Rob Herring Acked-by: Stephen Hemminger Reviewed-by: Vladimir Oltean Signed-off-by: Florian Fainelli Link: https://lore.kernel.org/r/20231023181729.1191071-2-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski

net: dsa: bcm_sf2: refactor LED regs access

2021-12-31T01:28:32Z

1. Define more regs. Some switches (e.g. BCM4908) have up to 6 regs. 2. Add helper for handling non-lineral port <-> reg mappings. 3. Add support for 12 B LED reg blocks on BCM4908 (different layout) Complete support for LEDs setup will be implemented once Linux receives a proper design & implementation for "hardware" LEDs. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20211229171642.22942-1-zajec5@gmail.com Signed-off-by: Jakub Kicinski

net: dsa: bcm_sf2: setup BCM4908 internal crossbar

2021-03-13T01:06:37Z

On some SoCs (e.g. BCM4908, BCM631[345]8) SF2 has an integrated crossbar. It allows connecting its selected external ports to internal ports. It's used by vendors to handle custom Ethernet setups. BCM4908 has following 3x2 crossbar. On Asus GT-AC5300 rgmii is used for connecting external BCM53134S switch. GPHY4 is usually used for WAN port. More fancy devices use SerDes for 2.5 Gbps Ethernet. ┌──────────┐ SerDes ─── 0 ─┤ │ │ 3x2 ├─ 0 ─── switch port 7 GPHY4 ─── 1 ─┤ │ │ crossbar ├─ 1 ─── runner (accelerator) rgmii ─── 2 ─┤ │ └──────────┘ Use setup data based on DT info to configure BCM4908's switch port 7. Right now only GPHY and rgmii variants are supported. Handling SerDes can be implemented later. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: bcm_sf2: store PHY interface/mode in port structure

2021-03-13T01:06:37Z

It's needed later for proper switch / crossbar setup. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: bcm_sf2: recalculate switch clock rate based on ports

2020-09-03T22:08:03Z

Whenever a port gets enabled/disabled, recalcultate the required switch clock rate to make sure it always gets set to the expected rate targeting our switch use case. This is only done for the BCM7445 switch as there is no clocking profile available for BCM7278. Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: dsa: bcm_sf2: request and handle clocks

2020-09-03T22:08:03Z

Fetch the corresponding clock resource and enable/disable it during suspend/resume if and only if we have no ports defined for Wake-on-LAN. Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: dsa: bcm_sf2: Add support for optional reset controller line

2019-11-06T02:06:38Z

Grab an optional and exclusive reset controller line for the switch and manage it during probe/remove functions accordingly. For 7278 devices we change bcm_sf2_sw_rst() to use the reset controller line since the WATCHDOG_CTRL register does not reset the switch contrary to stated documentation. Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller