net: dsa: b53: add support for bcm63xx ARL entry format

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[ Upstream commit 2b3013ac03 ]

The ARL registers of BCM63XX embedded switches are somewhat unique. The
normal ARL table access registers have the same format as BCM5389, but
the ARL search registers differ:

* SRCH_CTL is at the same offset of BCM5389, but 16 bits wide. It does
  not have more fields, just needs to be accessed by a 16 bit read.
* SRCH_RSLT_MACVID and SRCH_RSLT are aligned to 32 bit, and have shifted
  offsets.
* SRCH_RSLT has a different format than the normal ARL data entry
  register.
* There is only one set of ENTRY_N registers, implying a 1 bin layout.

So add appropriate ops for bcm63xx and let it use it.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251107080749.26936-9-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 3b08863469 ("net: dsa: b53: fix BCM5325/65 ARL entry multicast port masks")
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Jonas Gorski 2025-11-07 09:07:49 +01:00 • committed by Greg Kroah-Hartman

parent e5a6a24759

commit 8e881dfd52

3 changed files with 61 additions and 7 deletions

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44

drivers/net/dsa/b53/b53_common.c

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15

drivers/net/dsa/b53/b53_priv.h

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9

drivers/net/dsa/b53/b53_regs.h

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