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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 22EB5C433B4 for ; Mon, 10 May 2021 05:56:14 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A2C0600EF for ; Mon, 10 May 2021 05:56:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A2C0600EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aj.id.au Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: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:List-Owner; bh=ufa9Eh/0Ifkg095qTlH37G//sFzTOYMhyQ78UiPpRZk=; b=UcPWKHl8Apl6SJ0hM7587e9Pi buInLaVtNwrDtJkXaM84oGpAC0bK/Sda9YS69GhpNJPjLBDOI7Ozv1Ar+HWUpA4PrPIhsntvMytFC TMUSCFzkaeldwL3wO1F0ZpbRQR/+XE01vi4FFkfQuIrj8zKNvFtBa75WFEpkXC8yXOj4K1QEoeLrl sRG/JPvD1XJZfQ5FGmPh6/kJsjPkYpS/iDYbP7WrcANt91GjxsIiChWz+dv/NnEuLfKAWd9KN/jTW dE9Edo8iOEq2ygG9x8sGtN6xFKIJYd29v7Wz6h/oesnRyKbOpp53UwKilZq7zoMbix917flYSN4kR +oQqVPkjw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lfyqi-00DGiG-Dl; Mon, 10 May 2021 05:53:03 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lfyio-00DEYV-TV for linux-arm-kernel@desiato.infradead.org; Mon, 10 May 2021 05:45:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=WcWLsIVd7FBaVpMfmIuuKOIgK8kxwBSDHbabyxefQ2A=; b=u6jG9FX0I4zIKXSv0tT5bT0p2t OO0Szh7ceFW9Io/xK6iznutaIBuzkjdapoL/wRE0vunqWyf+oA7WSBtds1JUC32AbsnD8BuAUmlkT cFemc/YI45tftT5XM8fUsv8kiHCQNCyGJdtBROuHAWkq9eWNL7IRp0wJc+362BGVItXu/BVDxHLLV BlOTU6x7367+L4GCGZindXz+bZqXp6sRksQ7koRWoqv6qJuITHCKn3+kJqer54mVU2Emn8p37XeTx wE+3ffoXxDp2F1Df7NbqBDPab6Fgi2XC6w+fPzfeXw4NF/BpzEhskinwI5X4wb+SMLLrEEQZXLDwm 4N+blTNw==; Received: from new1-smtp.messagingengine.com ([66.111.4.221]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lfyil-008JLb-Vh for linux-arm-kernel@lists.infradead.org; Mon, 10 May 2021 05:44:49 +0000 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 5B78B5803EE; Mon, 10 May 2021 01:44:47 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Mon, 10 May 2021 01:44:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aj.id.au; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm2; bh=WcWLsIVd7FBaV pMfmIuuKOIgK8kxwBSDHbabyxefQ2A=; b=aAyZNcO12+sQBN9IYuW333tWOLpYD ivdpU6xr9pkGxiSoJ3/ERzB7rxJDEihLIwL17hU55Im1u46uDZij3Qn59oVW0l1h TtCOlDC2JNtJsPleZj1E8pgvfMkivkMaFnRDTQvQyRJG/4PPNV8x/SCB7tQm6f74 KYTjGMMqSJE2Ydfi+4LZqfTeMVi3/8gqRTB4igWRZ1L/XW2DoTlZfzPWRKrhe50a RSTytmerxBrSsink7S2Hv6xdOo0O79C03EXioPHmM+Y35JpvZJICjCxQI6STuYoq ksr61f/5q/q1H6cgSqfgJSvmBxzRiMIAvemiYKzIRozoa0MoEUEcqXAXw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=WcWLsIVd7FBaVpMfmIuuKOIgK8kxwBSDHbabyxefQ2A=; b=FrmDWdZO xfFL021Yrm8QBWfY5wI6rI4hTj23Hiy4XBUTX0QjccAUBmwuzx4K95Eu+FybileB 5ZXWiAiOFTuz32MLrJVOYAjXjWSIBttbt2IYW0qt01RW8ZOuz0n87ztLeqofzP/k CdkEQI9ozU+k3AhNfoUIlKP8YPjyrIWxFUFTzcPPAHjy2zV07mf01/zrHE4jo0R+ Z8KFnf60RgCGr/1rQiARxoyMrOsJ6uiBlrlww+ryBLph80mxVX1TTCXKwAmr0lT2 zNNvKOyCccojgXrFKp9blklECwEqis/pMXWhMVHEo3WJNFFttIcrsPJEQkxWo8xK kBb1QTzTiRj/Ww== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdegjedgleeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgjfhgggfestdekre dtredttdenucfhrhhomheptehnughrvgifucflvghffhgvrhihuceorghnughrvgifsegr jhdrihgurdgruheqnecuggftrfgrthhtvghrnhepjefgvdevheetkeevgeegleelgfelte etjeffleffvdduudevieffgeetleevhfetnecukfhppedvtdefrdehjedrvdduhedrkeen ucevlhhushhtvghrufhiiigvpedunecurfgrrhgrmhepmhgrihhlfhhrohhmpegrnhgurh gvfiesrghjrdhiugdrrghu X-ME-Proxy: Received: from localhost.localdomain (unknown [203.57.215.8]) by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 10 May 2021 01:44:41 -0400 (EDT) From: Andrew Jeffery To: openipmi-developer@lists.sourceforge.net, openbmc@lists.ozlabs.org, minyard@acm.org Cc: devicetree@vger.kernel.org, tmaimon77@gmail.com, linux-aspeed@lists.ozlabs.org, avifishman70@gmail.com, venture@google.com, linux-kernel@vger.kernel.org, tali.perry1@gmail.com, robh+dt@kernel.org, chiawei_wang@aspeedtech.com, linux-arm-kernel@lists.infradead.org, benjaminfair@google.com, arnd@arndb.de, zweiss@equinix.com Subject: [PATCH v3 16/16] ipmi: kcs_bmc_aspeed: Optionally apply status address Date: Mon, 10 May 2021 15:12:13 +0930 Message-Id: <20210510054213.1610760-17-andrew@aj.id.au> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210510054213.1610760-1-andrew@aj.id.au> References: <20210510054213.1610760-1-andrew@aj.id.au> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210509_224448_112242_39F5B036 X-CRM114-Status: GOOD ( 17.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some Aspeed KCS devices can derive the status register address from the address of the data register. As such, the address of the status register can be implicit in the configuration if desired. On the other hand, sometimes address schemes might be requested that are incompatible with the default addressing scheme. Allow these requests where possible if the devicetree specifies the status register address. Signed-off-by: Andrew Jeffery Reviewed-by: Chia-Wei Wang --- drivers/char/ipmi/kcs_bmc_aspeed.c | 110 ++++++++++++++++++++--------- 1 file changed, 78 insertions(+), 32 deletions(-) diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index 558132b2b9f7..f6c58eb2883e 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -83,6 +83,8 @@ #define LPC_STR2 0x040 #define LPC_STR3 0x044 #define LPC_HICRB 0x100 +#define LPC_HICRB_EN16LADR2 BIT(5) +#define LPC_HICRB_EN16LADR1 BIT(4) #define LPC_HICRB_IBFIE4 BIT(1) #define LPC_HICRB_LPC4E BIT(0) #define LPC_HICRC 0x104 @@ -96,6 +98,11 @@ #define LPC_IDR4 0x114 #define LPC_ODR4 0x118 #define LPC_STR4 0x11C +#define LPC_LSADR12 0x120 +#define LPC_LSADR12_LSADR2_MASK GENMASK(31, 16) +#define LPC_LSADR12_LSADR2_SHIFT 16 +#define LPC_LSADR12_LSADR1_MASK GENMASK(15, 0) +#define LPC_LSADR12_LSADR1_SHIFT 0 #define OBE_POLL_PERIOD (HZ / 2) @@ -123,7 +130,7 @@ struct aspeed_kcs_bmc { struct aspeed_kcs_of_ops { int (*get_channel)(struct platform_device *pdev); - int (*get_io_address)(struct platform_device *pdev); + int (*get_io_address)(struct platform_device *pdev, u32 addrs[2]); }; static inline struct aspeed_kcs_bmc *to_aspeed_kcs_bmc(struct kcs_bmc_device *kcs_bmc) @@ -217,38 +224,64 @@ static void aspeed_kcs_updateb(struct kcs_bmc_device *kcs_bmc, u32 reg, u8 mask, * C. KCS4 * D / C : CA4h / CA5h */ -static void aspeed_kcs_set_address(struct kcs_bmc_device *kcs_bmc, u16 addr) +static int aspeed_kcs_set_address(struct kcs_bmc_device *kcs_bmc, u32 addrs[2], int nr_addrs) { struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc); - switch (kcs_bmc->channel) { + if (WARN_ON(nr_addrs < 1 || nr_addrs > 2)) + return -EINVAL; + + switch (priv->kcs_bmc.channel) { case 1: - regmap_update_bits(priv->map, LPC_HICR4, - LPC_HICR4_LADR12AS, 0); - regmap_write(priv->map, LPC_LADR12H, addr >> 8); - regmap_write(priv->map, LPC_LADR12L, addr & 0xFF); + regmap_update_bits(priv->map, LPC_HICR4, LPC_HICR4_LADR12AS, 0); + regmap_write(priv->map, LPC_LADR12H, addrs[0] >> 8); + regmap_write(priv->map, LPC_LADR12L, addrs[0] & 0xFF); + if (nr_addrs == 2) { + regmap_update_bits(priv->map, LPC_LSADR12, LPC_LSADR12_LSADR1_MASK, + addrs[1] << LPC_LSADR12_LSADR1_SHIFT); + + regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_EN16LADR1, + LPC_HICRB_EN16LADR1); + } break; case 2: - regmap_update_bits(priv->map, LPC_HICR4, - LPC_HICR4_LADR12AS, LPC_HICR4_LADR12AS); - regmap_write(priv->map, LPC_LADR12H, addr >> 8); - regmap_write(priv->map, LPC_LADR12L, addr & 0xFF); + regmap_update_bits(priv->map, LPC_HICR4, LPC_HICR4_LADR12AS, LPC_HICR4_LADR12AS); + regmap_write(priv->map, LPC_LADR12H, addrs[0] >> 8); + regmap_write(priv->map, LPC_LADR12L, addrs[0] & 0xFF); + if (nr_addrs == 2) { + regmap_update_bits(priv->map, LPC_LSADR12, LPC_LSADR12_LSADR2_MASK, + addrs[1] << LPC_LSADR12_LSADR2_SHIFT); + + regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_EN16LADR2, + LPC_HICRB_EN16LADR2); + } break; case 3: - regmap_write(priv->map, LPC_LADR3H, addr >> 8); - regmap_write(priv->map, LPC_LADR3L, addr & 0xFF); + if (nr_addrs == 2) { + dev_err(priv->kcs_bmc.dev, + "Channel 3 only supports inferred status IO address\n"); + return -EINVAL; + } + + regmap_write(priv->map, LPC_LADR3H, addrs[0] >> 8); + regmap_write(priv->map, LPC_LADR3L, addrs[0] & 0xFF); break; case 4: - regmap_write(priv->map, LPC_LADR4, ((addr + 1) << 16) | - addr); + if (nr_addrs == 1) + regmap_write(priv->map, LPC_LADR4, ((addrs[0] + 1) << 16) | addrs[0]); + else + regmap_write(priv->map, LPC_LADR4, (addrs[1] << 16) | addrs[0]); + break; default: - break; + return -EINVAL; } + + return 0; } static inline int aspeed_kcs_map_serirq_type(u32 dt_type) @@ -457,18 +490,18 @@ static int aspeed_kcs_of_v1_get_channel(struct platform_device *pdev) return channel; } -static int aspeed_kcs_of_v1_get_io_address(struct platform_device *pdev) +static int +aspeed_kcs_of_v1_get_io_address(struct platform_device *pdev, u32 addrs[2]) { - u32 slave; int rc; - rc = of_property_read_u32(pdev->dev.of_node, "kcs_addr", &slave); - if (rc || slave > 0xffff) { + rc = of_property_read_u32(pdev->dev.of_node, "kcs_addr", addrs); + if (rc || addrs[0] > 0xffff) { dev_err(&pdev->dev, "no valid 'kcs_addr' configured\n"); return -EINVAL; } - return slave; + return 1; } static int aspeed_kcs_of_v2_get_channel(struct platform_device *pdev) @@ -504,16 +537,24 @@ static int aspeed_kcs_of_v2_get_channel(struct platform_device *pdev) return -EINVAL; } -static int aspeed_kcs_of_v2_get_io_address(struct platform_device *pdev) +static int +aspeed_kcs_of_v2_get_io_address(struct platform_device *pdev, u32 addrs[2]) { - uint32_t slave; int rc; - rc = of_property_read_u32(pdev->dev.of_node, "aspeed,lpc-io-reg", &slave); - if (rc || slave > 0xffff) + rc = of_property_read_variable_u32_array(pdev->dev.of_node, + "aspeed,lpc-io-reg", + addrs, 1, 2); + if (rc < 0) + return rc; + + if (addrs[0] > 0xffff) + return -EINVAL; + + if (rc == 2 && addrs[1] > 0xffff) return -EINVAL; - return slave; + return rc; } static int aspeed_kcs_probe(struct platform_device *pdev) @@ -522,9 +563,11 @@ static int aspeed_kcs_probe(struct platform_device *pdev) struct kcs_bmc_device *kcs_bmc; struct aspeed_kcs_bmc *priv; struct device_node *np; - int rc, channel, addr; bool have_upstream_irq; u32 upstream_irq[2]; + int rc, channel; + int nr_addrs; + u32 addrs[2]; np = pdev->dev.of_node->parent; if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && @@ -542,9 +585,9 @@ static int aspeed_kcs_probe(struct platform_device *pdev) if (channel < 0) return channel; - addr = ops->get_io_address(pdev); - if (addr < 0) - return addr; + nr_addrs = ops->get_io_address(pdev, addrs); + if (nr_addrs < 0) + return nr_addrs; np = pdev->dev.of_node; rc = of_property_read_u32_array(np, "aspeed,lpc-interrupts", upstream_irq, 2); @@ -573,7 +616,9 @@ static int aspeed_kcs_probe(struct platform_device *pdev) priv->obe.remove = false; timer_setup(&priv->obe.timer, aspeed_kcs_check_obe, 0); - aspeed_kcs_set_address(kcs_bmc, addr); + rc = aspeed_kcs_set_address(kcs_bmc, addrs, nr_addrs); + if (rc) + return rc; /* Host to BMC IRQ */ rc = aspeed_kcs_config_downstream_irq(kcs_bmc, pdev); @@ -596,7 +641,8 @@ static int aspeed_kcs_probe(struct platform_device *pdev) kcs_bmc_add_device(&priv->kcs_bmc); - dev_info(&pdev->dev, "Initialised channel %d at 0x%x\n", kcs_bmc->channel, addr); + dev_info(&pdev->dev, "Initialised channel %d at 0x%x\n", + kcs_bmc->channel, addrs[0]); return 0; } -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel