From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27C0BC433EF for ; Tue, 21 Sep 2021 21:39:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03B6661019 for ; Tue, 21 Sep 2021 21:39:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235496AbhIUVlS (ORCPT ); Tue, 21 Sep 2021 17:41:18 -0400 Received: from 82-65-109-163.subs.proxad.net ([82.65.109.163]:33938 "EHLO luna.linkmauve.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234424AbhIUVlQ (ORCPT ); Tue, 21 Sep 2021 17:41:16 -0400 Received: by luna.linkmauve.fr (Postfix, from userid 1000) id 88C64F40B68; Tue, 21 Sep 2021 23:39:43 +0200 (CEST) From: Emmanuel Gil Peyrot To: linux-crypto@vger.kernel.org Cc: Emmanuel Gil Peyrot , Ash Logan , =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= , Herbert Xu , "David S. Miller" , Rob Herring , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/4] crypto: nintendo-aes - add a new AES driver Date: Tue, 21 Sep 2021 23:39:26 +0200 Message-Id: <20210921213930.10366-1-linkmauve@linkmauve.fr> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This engine implements AES in CBC mode, using 128-bit keys only. It is present on both the Wii and the Wii U, and is apparently identical in both consoles. The hardware is capable of firing an interrupt when the operation is done, but this driver currently uses a busy loop, I’m not too sure whether it would be preferable to switch, nor how to achieve that. It also supports a mode where no operation is done, and thus could be used as a DMA copy engine, but I don’t know how to expose that to the kernel or whether it would even be useful. In my testing, on a Wii U, this driver reaches 80.7 MiB/s, while the aes-generic driver only reaches 30.9 MiB/s, so it is a quite welcome speedup. This driver was written based on reversed documentation, see: https://wiibrew.org/wiki/Hardware/AES Emmanuel Gil Peyrot (4): crypto: nintendo-aes - add a new AES driver dt-bindings: nintendo-aes: Document the Wii and Wii U AES support powerpc: wii.dts: Expose the AES engine on this platform powerpc: wii_defconfig: Enable AES by default .../bindings/crypto/nintendo-aes.yaml | 34 +++ arch/powerpc/boot/dts/wii.dts | 7 + arch/powerpc/configs/wii_defconfig | 4 +- drivers/crypto/Kconfig | 11 + drivers/crypto/Makefile | 1 + drivers/crypto/nintendo-aes.c | 273 ++++++++++++++++++ 6 files changed, 329 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/crypto/nintendo-aes.yaml create mode 100644 drivers/crypto/nintendo-aes.c -- 2.33.0