From patchwork Fri Jan 7 00:13:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 1576381 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=bnlS2y2b; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=OXC+WfjO; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4JVNyx3ClKz9sCD for ; Fri, 7 Jan 2022 11:15:20 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=m2ZudHeOQVPbuuYdBpHrW57ejcEFU5aC/BBvGskSGcw=; b=bnlS2y2bxpebov EzlyJRYmluWhGC3JaTTK/WhLAqwLBeQ4byAeLYKxZOXc7DMdBJvB1GOIGM4oCXIJVU/NyZqwT3q/G 2CLtIeZbo8KF3ZjIGv2W2KTfpdUEM6UbnD3ff2CTV9t8NH3cW6AJIlMnUvG4uYli49jOA8TEqDsWy kVQSZkhYRdCH/vRZG7zOblfPjNKoxm1XD3YwY35nfdVzzuUO+PDr/enZf+C/MxOKl4mH7e392QsX8 KpAODusJ4zYfy6pM5GhCgzoMZ5EjejBN7XPNXBdxtvCPfY40pMtCxuP17Mcgp57FJCa55HNePfdo7 V7haG0jcNqwHKZiIue1Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n5ctR-001d6G-Kj; Fri, 07 Jan 2022 00:14:05 +0000 Received: from mail-pj1-x102a.google.com ([2607:f8b0:4864:20::102a]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n5ctO-001d4s-Tq for linux-mtd@lists.infradead.org; Fri, 07 Jan 2022 00:14:04 +0000 Received: by mail-pj1-x102a.google.com with SMTP id 59-20020a17090a09c100b001b34a13745eso2978852pjo.5 for ; Thu, 06 Jan 2022 16:14:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bHp8KHmssnLYTaOK1agSupyvSqkjwpt0DTwhR+0qxuQ=; b=OXC+WfjOI7Dw/780ZlSKKOJzpuyxzgwPvAn3vd5y6IIL5/USBcS/+EaFEydk/P9fQW I8seI4B9zA0/MGxPODSkOM9ZDZRH+cO8KQ6b0oDrQXmRtDE/44L5wYuaL8ZxDwXL1G3K b3XBMgo5lMG9hXK0h5wObvGX5v+4NIBh7krq4ad1ieKoJ4O1jP44XxoEhjGH9jcwJwhz ty6BtKXTF2hpc/1tgHTjkmdSf8x0jYj8LiAj69jCG2AOoYo1Q2ZvMX496O7PmOjiBO3d CXkf7I9yF7IPB7Qo40feEfYj8pP6Qk3Qido+AHnwlFaM4t/7xP77Vr+tN10CWwrCcs2S m5Ag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bHp8KHmssnLYTaOK1agSupyvSqkjwpt0DTwhR+0qxuQ=; b=iP2rfM7ah+25OIIwBbTMtbpNXkMkVe5Rg+Pgr2ex8TRfWegLdmvCrOHMooDJX0bZvX 3VWw+7n6+VMXfIXj7lQmKjKASjJAXv86Ci1InSfYmdknyYlwh3XMmgZc1+cRitiaQNmy IkuuteZU6dQddxzhvkMwd3X0lHTRz6iq89/0E77k+ySkgQTL4gHOtB+v3qEDmwrtmEIz 7WDAMvxzF07d2dFxdyC/XHlJRSdHx7f4jp8e2M1yPEi2Sp+9i7OFHasOCzWKy4jo9tG2 0J2LxVEXczl2OV0XX1NnE3ufp8e/Q7x7ZPk4bryp9ilKfU7ZrguBPdy5ZSxrw+shr9wb s9uQ== X-Gm-Message-State: AOAM53195xp4j0S460OtU7esFcBQ1X29rcvJD+l/xdv6UmztkpY/lHL9 fxSNoyGhnV0FSBDA1/fLzEd2ldq4cOo= X-Google-Smtp-Source: ABdhPJxs5ngIS8diKlG5kij1EnlAAnRL98ICjCAo5rn2ZWpvA4FWNRG7fhGUSWexig/0VqQWjrMFHQ== X-Received: by 2002:a17:903:300b:b0:149:f48b:e8b8 with SMTP id o11-20020a170903300b00b00149f48be8b8mr4420991pla.108.1641514441399; Thu, 06 Jan 2022 16:14:01 -0800 (PST) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id y3sm3301906pju.37.2022.01.06.16.13.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Jan 2022 16:14:00 -0800 (PST) From: Florian Fainelli To: linux-mtd@lists.infradead.org Cc: Florian Fainelli , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Brian Norris , Kamal Dasu , Arnd Bergmann , Cai Huoqing , Colin Ian King , linux-kernel@vger.kernel.org (open list), linux-wireless@vger.kernel.org (open list:BROADCOM SPECIFIC AMBA DRIVER (BCMA)), bcm-kernel-feedback-list@broadcom.com (open list:BROADCOM STB NAND FLASH DRIVER) Subject: [PATCH v2 0/9] BCMA support for brcmnand Date: Thu, 6 Jan 2022 16:13:19 -0800 Message-Id: <20220107001328.2233896-1-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220106_161402_987293_C3F6F4EB X-CRM114-Status: GOOD ( 20.14 ) X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi all, This patch series adds support for the BRCMNAND controller revision 3.4 embedded in MIPS-based SoCs such as 5357, typically found in the Netgear WNR3500L v2 and other kinds of Wi-Fi routers. The upstr [...] Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:102a listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [f.fainelli[at]gmail.com] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Hi all, This patch series adds support for the BRCMNAND controller revision 3.4 embedded in MIPS-based SoCs such as 5357, typically found in the Netgear WNR3500L v2 and other kinds of Wi-Fi routers. The upstream platform that uses this controller is under arch/mips/bcm47xx/ and does not use Device Tree (and probably never will by now). BCMA (Broadcom AMBA) is a special kind of discoverable memory mapped interface which requires the use of special accessors to read from/write to the hardware block. The integration of brcmnand into that SoC is a bit quirky in that every register offering byte level data about the flash (OOB, device ID, etc.) requires byte swapping. The command shift should also have been 24, but is in fact 0, took me a while to understand why no reads were actually working because of that. This has been tested with Linux 5.10.82 and Linus' master with OpenWrt and confirmed that the squashfs + jffs2 overlay that OpenWrt creates is entirely functional and that written data is made persistent. Changes in v2: - re-ordered the patch such that the soc variable is initialized as early as possible - corrected bug in the conversion of brcmnand_init_cs() which incorrectly used the wrong device_node variable (parent instead of child) - took Andy's feedback to make the test for a valid interrupt to be > 0 while calling platform_get_irq_optional() - utilized static branch (disabled by default) and conditional compilation and confirm with disassembly that the generated code is as efficient as before if not enabling the BCMA shim and as efficient as possible if enabling BCMA shim - updated BCMA shim driver descriptor, author and added helper function to encapsulate the container_of usage - added comment to explain why a slightly different platform device name is used for the 5357-style NAND controller Florian Fainelli (9): mtd: rawnand: brcmnand: Assign soc as early as possible mtd: rawnand: brcmnand: Allow SoC to provide I/O operations mtd: rawnand: brcmnand: Avoid pdev in brcmnand_init_cs() mtd: rawnand: brcmnand: Move OF operations out of brcmnand_init_cs() mtd: rawnand: brcmnand: Allow working without interrupts mtd: rawnand: brcmnand: Add platform data structure for BCMA mtd: rawnand: brcmnand: Allow platform data instantation mtd: rawnand: brcmnand: BCMA controller uses command shift of 0 mtd: rawnand: brcmnand: Add BCMA shim MAINTAINERS | 1 + drivers/bcma/driver_chipcommon_nflash.c | 20 ++- drivers/mtd/nand/raw/Kconfig | 13 ++ drivers/mtd/nand/raw/brcmnand/Makefile | 2 + drivers/mtd/nand/raw/brcmnand/bcma_nand.c | 132 ++++++++++++++++ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 160 +++++++++++++------- drivers/mtd/nand/raw/brcmnand/brcmnand.h | 29 ++++ include/linux/bcma/bcma_driver_chipcommon.h | 5 + include/linux/platform_data/brcmnand.h | 12 ++ 9 files changed, 321 insertions(+), 53 deletions(-) create mode 100644 drivers/mtd/nand/raw/brcmnand/bcma_nand.c create mode 100644 include/linux/platform_data/brcmnand.h