From: Fil Dunsky <filipp.dunsky@gmail.com>
To: Linus Walleij <linusw@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
Krzysztof Kozlowski <krzk@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Drew Fustini <fustini@kernel.org>,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: Re: [PATCH RFC 00/10] ARM: Add support for Cortina Systems CS75xx and Securifi Almond+
Date: Wed, 30 Sep 2026 13:57:17 +0300 [thread overview]
Message-ID: <179076583798.3054629.14422335928572048671@gmail.com> (raw)
In-Reply-To: <CAD++jL=0Zc939o7UaFgtx+04gLRmgmPVHTAeuW6OS9nPP5Xt8Q@mail.gmail.com>
On Wed, Sep 30, 2026 at 12:39 PM Linus Walleij <linusw@kernel.org> wrote:
> Is this OpenWrt fork public?
Yes, it is under review in OpenWrt:
https://github.com/openwrt/openwrt/pull/25033
The sources are in target/linux/cortina/files/, the Ethernet part in
drivers/net/ethernet/cortina/cs752x_ne.c (plus cs752x_fe.c,
cs752x_sch_tm.c and drivers/net/mdio/mdio-cs75xx.c).
> Actually what I'm most curious about is the packet engine, which may or
> may not be related to drivers/net/ethernet/cortina/*
As far as I can tell it is not derived from the Gemini GMAC/TOE: the
vendor driver has no StorLink or Gemini references, and the engine is
split into a network interface (NI) with per-port MACs, a DMA/LSO
block, a queue manager with its buffers in the top 64 MiB of DRAM, a
traffic manager/scheduler and a forwarding engine with packet buffers
in on-chip XRAM, which does not map onto the gemini.c register layout.
I have not compared the descriptor formats in detail though. The
OpenWrt driver only uses the NI/DMA path, all forwarding in software.
Thanks,
Fil
next prev parent reply other threads:[~2026-09-30 10:57 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-30 6:59 Fil Dunsky via B4 Relay
2026-09-30 7:00 ` [PATCH RFC 01/10] dt-bindings: vendor-prefixes: Add Securifi Fil Dunsky via B4 Relay
2026-09-30 9:58 ` Linus Walleij
2026-09-30 7:00 ` [PATCH RFC 02/10] dt-bindings: arm: Add Cortina Systems CS7542 and Securifi Almond+ Fil Dunsky via B4 Relay
2026-09-30 9:59 ` Linus Walleij
2026-09-30 7:00 ` [PATCH RFC 03/10] dt-bindings: arm: cpus: Add Cortina Systems CS7542 enable method Fil Dunsky via B4 Relay
2026-09-30 9:59 ` Linus Walleij
2026-09-30 7:00 ` [PATCH RFC 04/10] ARM: cortina: Add support for the CS75xx SoC family Fil Dunsky via B4 Relay
2026-09-30 10:11 ` Linus Walleij
2026-09-30 10:18 ` Fil Dunsky
2026-09-30 10:20 ` Krzysztof Kozlowski
2026-09-30 10:57 ` Fil Dunsky
2026-09-30 11:01 ` Linus Walleij
2026-09-30 11:36 ` Arnd Bergmann
2026-09-30 11:43 ` Fil Dunsky
2026-09-30 12:02 ` Arnd Bergmann
2026-09-30 12:11 ` Fil Dunsky
2026-09-30 12:55 ` Arnd Bergmann
2026-09-30 13:05 ` Fil Dunsky
2026-09-30 7:00 ` [PATCH RFC 05/10] ARM: debug: Add Cortina Systems CS75xx UART0 support Fil Dunsky via B4 Relay
2026-09-30 10:23 ` Linus Walleij
2026-09-30 7:00 ` [PATCH RFC 06/10] dt-bindings: serial: Add Cortina Systems CS7542 UART Fil Dunsky via B4 Relay
2026-09-30 7:00 ` [PATCH RFC 07/10] tty: serial: Add Cortina Systems CS75xx UART driver Fil Dunsky via B4 Relay
2026-09-30 7:14 ` Greg Kroah-Hartman
2026-09-30 7:52 ` Fil Dunsky
2026-09-30 10:57 ` Linus Walleij
2026-09-30 11:08 ` Arnd Bergmann
2026-09-30 11:24 ` Fil Dunsky
2026-09-30 12:05 ` Arnd Bergmann
2026-09-30 7:00 ` [PATCH RFC 08/10] ARM: dts: cortina: Add CS7542 SoC and Securifi Almond+ board Fil Dunsky via B4 Relay
2026-09-30 7:00 ` [PATCH RFC 09/10] ARM: multi_v7_defconfig: Enable Cortina Systems CS75xx support Fil Dunsky via B4 Relay
2026-09-30 7:00 ` [PATCH RFC 10/10] MAINTAINERS: Add entry for Cortina Systems CS75xx Fil Dunsky via B4 Relay
2026-09-30 10:39 ` [PATCH RFC 00/10] ARM: Add support for Cortina Systems CS75xx and Securifi Almond+ Linus Walleij
2026-09-30 10:57 ` Fil Dunsky [this message]
2026-09-30 11:06 ` Linus Walleij
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