Received: by 2002:a05:7412:ba23:b0:fa:4c10:6cad with SMTP id jp35csp574950rdb; Thu, 18 Jan 2024 11:55:53 -0800 (PST) X-Google-Smtp-Source: AGHT+IEbCt1IRYYGGw6ASBvpc1b12Shp/rkBqZHASuI0DzTUxEeLO8bUokNy49nTHEJ6QwsRSqY1 X-Received: by 2002:a05:6808:2204:b0:3bd:9b47:ca3f with SMTP id bd4-20020a056808220400b003bd9b47ca3fmr1680573oib.48.1705607753287; Thu, 18 Jan 2024 11:55:53 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1705607753; cv=pass; d=google.com; s=arc-20160816; b=OfofLoO2JS2ukE4GoLfkX8zA67azgt6ZB+I26AnlItNiHs+S7GFX7Dop62o8DeM+kZ HF0xF9e8bSVWL/fmRcVcnSNPGqawNLH9SycSlSu5d9kOXKNC7Q0liropIJXXz+yFz0S7 mIJvWqKvjF45wacpLV/x7Xp3tvJxYJWmUfRchycNlcmLshZIl8B0S+TnCRfnwVYjNCi0 e4YUzFOIoMxfdcWiqMguq2YsF2eBEnY81LX3mOJOqEyTWztNjUkLYgtvZh4dbLiGeJQZ KXAU+WAviucJaIH7POWPsO3Pw5VzfkFTmZ5dpLC2LsLmT9fbaiZkbqpGXO9OG1PF0xLg lzJA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:to:from:dkim-signature; bh=a9nIEwVNU9nrVzzdc3UDxZ1mL6R1G/Zg0+QNVyqab1M=; fh=gn6itW64bkK+dkA/PwHXJGh9Xf+T4xRtirMvY90Lw+o=; b=y86i37Rq9Rwtb48SiEcFTcPqxQ94Bjp/p5HTyfUlrQk2S0MBj6UpSf55Hw+0QkDBl+ K8OJoGa6/YZQ4vCWudQ7Bv4RkWHT2/enizK8FU/L9hGI+OlDrSeT8LEjUD54yPBhpiY5 IBFoXvuT2ZXR3wp2N5ZulrSH7ftp8p24EjHdEqNkOx805+iw4ldGanKRIoufPwJspQ70 cUf7t+aJBAPttoqFHVY8rtFslT5QNrN7U4nItxRK9l0/N5CZYOFX3GSahjO6XP2mk3lS b9hARQ818eRusUbOk8H3kEZmg68T62TNcv30sCZwgiSYLxFFHs8a2l02mYY4MkIQd3eE tqig== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@broadcom.com header.s=google header.b=ITPIYx+D; arc=pass (i=1 dkim=pass dkdomain=broadcom.com dmarc=pass fromdomain=broadcom.com); spf=pass (google.com: domain of linux-kernel+bounces-30536-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-30536-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=broadcom.com Return-Path: Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [147.75.199.223]) by mx.google.com with ESMTPS id d8-20020a05622a15c800b00429e709ac37si9058608qty.478.2024.01.18.11.55.53 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Jan 2024 11:55:53 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-30536-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223; Authentication-Results: mx.google.com; dkim=pass header.i=@broadcom.com header.s=google header.b=ITPIYx+D; arc=pass (i=1 dkim=pass dkdomain=broadcom.com dmarc=pass fromdomain=broadcom.com); spf=pass (google.com: domain of linux-kernel+bounces-30536-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-30536-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=broadcom.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 3EE0A1C24D5F for ; Thu, 18 Jan 2024 19:55:47 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5642331A6B; Thu, 18 Jan 2024 19:54:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="ITPIYx+D" Received: from mail-pj1-f44.google.com (mail-pj1-f44.google.com [209.85.216.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB8F72EB14 for ; Thu, 18 Jan 2024 19:54:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705607673; cv=none; b=uybsjewXye1/spvKBO46vQ9gi0pm9+TJg5zRLAEJHJAZETafT1t9RAGfBb5Y5IBM71Y29dKWl3RsX8cZJfXgK5v8kREYlE0aPVnTRdFln3txuL3lJXzsIWUsLKmuGdV3Q5r7Wn02P1ShEl4jn7UnaLN6J1PtQfIgTla0yHRiYPg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705607673; c=relaxed/simple; bh=Ial0NZ6lqzsLLpL0+24Gsy08MEKmI/HUmLraPWMmjZE=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=MEJdoxSdnZsCgYLBRNBhITBzWGMXxPKeEH5TUUOeAP7DBvjcj0IyRarzV4onhOU9Pe/x+MksE2xGIO6sQNLcNeh9uUYy4i1irRiZdAtpMmkOtcyZ35Ak5+aJQG7o1YrfWrcagx9VABenpMOQ159M8uYs2SMI6fj+NNZri7M4JTU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=ITPIYx+D; arc=none smtp.client-ip=209.85.216.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Received: by mail-pj1-f44.google.com with SMTP id 98e67ed59e1d1-2901ac9ba23so61603a91.3 for ; Thu, 18 Jan 2024 11:54:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1705607671; x=1706212471; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=a9nIEwVNU9nrVzzdc3UDxZ1mL6R1G/Zg0+QNVyqab1M=; b=ITPIYx+Dz1psB39MRQL0UPZOZeWzJAqfLCrbZKL06RSN1Zt72Cezd3FUjUzGvxAegb /eK/Nqd7dHn8FPvYc7S920zzocgChD/j/7gqzT/fQ0jMsVOrYiwBtAjcJwxU2fz0z/nN g286grB9lIAXr9fZyzasB+LGW/IkZCnKTt2vc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705607671; x=1706212471; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=a9nIEwVNU9nrVzzdc3UDxZ1mL6R1G/Zg0+QNVyqab1M=; b=H39ka78ydmAOM/qdY9t8w6LA7hU3Ht1NLUnT5MezCrSIiN+j+MJ521EpTAb1t4AbUn 7oZedwCI1G/Of9UTHA+6Kt8CzsxhJpZE+XPbZYuskG8Gf1YWxqpAJlpDTCGEe2sA8zzI 7DCmO6TH1U6E0PIYxKbQm8GwQsUpXwaJf4YkrgLnU8DzfmdQJtuFuIJG8GY3J/UNf9MA 5lacqsUwr3hbMR7ibW6aeKuaNrGT3aSAmTmNIpZef3cNAjTjWVSO3J22LhXxDTaHDi/m nAFCeGe7dExLixtUlzt/WwpBmztv8FF8K6Umiw1xTzbzLKllE22WCZsGYqUnSHdeyIgc WIPw== X-Gm-Message-State: AOJu0YwWyMWtEc/yYtvTk7KJ5d0rtcx2XnYN7Lklrxm98S3GvfxdIxhB Bst5smEeyJUqD1tmtWyLc6OONs1Kp5SxBxQadLUmqU0DcNgAGUjdSRYGwVbt+g== X-Received: by 2002:a17:90a:1f4a:b0:28e:8012:1329 with SMTP id y10-20020a17090a1f4a00b0028e80121329mr1196921pjy.23.1705607671061; Thu, 18 Jan 2024 11:54:31 -0800 (PST) Received: from bcacpedev-irv-3.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id rr12-20020a17090b2b4c00b0028d9b5d41edsm2263805pjb.38.2024.01.18.11.54.29 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 18 Jan 2024 11:54:30 -0800 (PST) From: dregan@broadcom.com To: dregan@broadcom.com, dregan@mail.com, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, computersforpeace@gmail.com, kdasu.kdev@gmail.com, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, joel.peshkin@broadcom.com, tomer.yacoby@broadcom.com, dan.beygelman@broadcom.com, william.zhang@broadcom.com, anand.gore@broadcom.com, kursad.oney@broadcom.com, florian.fainelli@broadcom.com, rafal@milecki.pl, bcm-kernel-feedback-list@broadcom.com, andre.przywara@arm.com, baruch@tkos.co.il, linux-arm-kernel@lists.infradead.org, dan.carpenter@linaro.org Subject: [PATCH v2 05/10] mtd: rawnand: brcmnand: Add BCMBCA read data bus interface Date: Thu, 18 Jan 2024 11:53:51 -0800 Message-Id: <20240118195356.133391-6-dregan@broadcom.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20240118195356.133391-1-dregan@broadcom.com> References: <20240118195356.133391-1-dregan@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: William Zhang The BCMBCA broadband SoC integrates the NAND controller differently than STB, iProc and other SoCs. It has different endianness for NAND cache data. Add a SoC read data bus shim for BCMBCA to meet the specific SoC need and performance improvement using the optimized memcpy function on NAND cache memory. Signed-off-by: William Zhang Reviewed-by: David Regan --- Changes in v2: - Drop the is_param argument to the read data bus function now that we have the exec_op API to read the parameter page and ONFI data - Remove be32_to_cpu from brcmnand_read_data_bus --- drivers/mtd/nand/raw/brcmnand/bcmbca_nand.c | 27 +++++++++++++++++++++ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 20 ++++++++++++--- drivers/mtd/nand/raw/brcmnand/brcmnand.h | 2 ++ 3 files changed, 46 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/raw/brcmnand/bcmbca_nand.c b/drivers/mtd/nand/raw/brcmnand/bcmbca_nand.c index 3e2f3b79788d..e97e13ae246c 100644 --- a/drivers/mtd/nand/raw/brcmnand/bcmbca_nand.c +++ b/drivers/mtd/nand/raw/brcmnand/bcmbca_nand.c @@ -26,6 +26,18 @@ enum { BCMBCA_CTLRDY = BIT(4), }; +#if defined(CONFIG_ARM64) +#define ALIGN_REQ 8 +#else +#define ALIGN_REQ 4 +#endif + +static inline bool bcmbca_nand_is_buf_aligned(void *flash_cache, void *buffer) +{ + return IS_ALIGNED((uintptr_t)buffer, ALIGN_REQ) && + IS_ALIGNED((uintptr_t)flash_cache, ALIGN_REQ); +} + static bool bcmbca_nand_intc_ack(struct brcmnand_soc *soc) { struct bcmbca_nand_soc *priv = @@ -56,6 +68,20 @@ static void bcmbca_nand_intc_set(struct brcmnand_soc *soc, bool en) brcmnand_writel(val, mmio); } +static void bcmbca_read_data_bus(struct brcmnand_soc *soc, + void __iomem *flash_cache, u32 *buffer, int fc_words) +{ + /* + * memcpy can do unaligned aligned access depending on source + * and dest address, which is incompatible with nand cache. Fallback + * to the memcpy for io version + */ + if (bcmbca_nand_is_buf_aligned((void *)flash_cache, buffer)) + memcpy((void *)buffer, (void *)flash_cache, fc_words * 4); + else + memcpy_fromio((void *)buffer, flash_cache, fc_words * 4); +} + static int bcmbca_nand_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -73,6 +99,7 @@ static int bcmbca_nand_probe(struct platform_device *pdev) soc->ctlrdy_ack = bcmbca_nand_intc_ack; soc->ctlrdy_set_enabled = bcmbca_nand_intc_set; + soc->read_data_bus = bcmbca_read_data_bus; return brcmnand_probe(pdev, soc); } diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index 8faca43ae1ff..73fdf7ce21aa 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -851,6 +851,20 @@ static inline u32 edu_readl(struct brcmnand_controller *ctrl, return brcmnand_readl(ctrl->edu_base + offs); } +static inline void brcmnand_read_data_bus(struct brcmnand_controller *ctrl, + void __iomem *flash_cache, u32 *buffer, int fc_words) +{ + struct brcmnand_soc *soc = ctrl->soc; + int i; + + if (soc->read_data_bus) { + soc->read_data_bus(soc, flash_cache, buffer, fc_words); + } else { + for (i = 0; i < fc_words; i++) + buffer[i] = brcmnand_read_fc(ctrl, i); + } +} + static void brcmnand_clear_ecc_addr(struct brcmnand_controller *ctrl) { @@ -1975,7 +1989,7 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip, { struct brcmnand_host *host = nand_get_controller_data(chip); struct brcmnand_controller *ctrl = host->ctrl; - int i, j, ret = 0; + int i, ret = 0; brcmnand_clear_ecc_addr(ctrl); @@ -1988,8 +2002,8 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip, if (likely(buf)) { brcmnand_soc_data_bus_prepare(ctrl->soc, false); - for (j = 0; j < FC_WORDS; j++, buf++) - *buf = brcmnand_read_fc(ctrl, j); + brcmnand_read_data_bus(ctrl, ctrl->nand_fc, buf, FC_WORDS); + buf += FC_WORDS; brcmnand_soc_data_bus_unprepare(ctrl->soc, false); } diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.h b/drivers/mtd/nand/raw/brcmnand/brcmnand.h index 928114c0be5e..7261a69989fe 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.h +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.h @@ -24,6 +24,8 @@ struct brcmnand_soc { void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en); void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare, bool is_param); + void (*read_data_bus)(struct brcmnand_soc *soc, void __iomem *flash_cache, + u32 *buffer, int fc_words); const struct brcmnand_io_ops *ops; }; -- 2.37.3