From patchwork Wed Apr 3 13:20:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 13616100 Received: from mail-pf1-f182.google.com (mail-pf1-f182.google.com [209.85.210.182]) (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 7245B152166 for ; Wed, 3 Apr 2024 13:20:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712150421; cv=none; b=mmmKhQhDYttrZBoqjtU+9nyB0Gd3eizgURnnZ2imx3/HtRQOIN7x5JEsRClvINttbSD7L472qZsQHg+TDzwnxX0ALWGTgx93vd9LPu94SvCgEpYlNPV41QklyTwvRlCDUby9X5oDX52FtRhDGkF/mCdjhOaiBKcUb1X3DgzGFuw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712150421; c=relaxed/simple; bh=QMLyC7z7wrC4cQg2eqM+Dfe+kl12AbyhXTxgQxg+dJQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Isv3SwWIqJgB/WpmQPY70vBbXRCOlJPVvo8MBTUKhogaB7eM5fhICB8jl0sIHiz0gEj5Qe30ynPv4TxvPIo8tMizisB12s+6P2OX9XZ0sz1llm0IMPQE/tAN2c0l6G5FVsaE5sPhvmf8MPg1pkgtsHzpMsu0gyIYkSlZKTgtyQ4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=iJ+YzJ1F; arc=none smtp.client-ip=209.85.210.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="iJ+YzJ1F" Received: by mail-pf1-f182.google.com with SMTP id d2e1a72fcca58-6eaf1005fcaso3007795b3a.3 for ; Wed, 03 Apr 2024 06:20:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1712150419; x=1712755219; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=KwQhYX2Mz1rNOgNCjbLm4vj/pn57/J/0LzejU91ZMaQ=; b=iJ+YzJ1FnMTnDmmgSP+pBevtno1GL2cOETABb8IZDK3WtbxI2F5HAQNat8wZ0Z08Cj GlgfpFSI87gT5r9iV8b95Fn/8Jd83EfRVtuT49Ixsv8JhSQPz2WWWwWywoyUxBEET35n BHenb1XxJ/uD/tvhMScVHHbeHq3CNIZiuHHutjL8ro3pYV0EnBAf2g2EltTh7fPPqtZR abpg5hXaR0cJNVkD1ftYGKmu+qTKZa5PfackTYsD1FR0vpvCV/rgvCx2IMBbfQK6PlUK q+aJCV6jcocLsMaQxVLoE2pgd2roqIAj2XtyPARozxpFpeOorancxBXWXXUsHgxIZZ7t YXxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712150419; x=1712755219; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KwQhYX2Mz1rNOgNCjbLm4vj/pn57/J/0LzejU91ZMaQ=; b=o58Z+n6wtrmA8H2MH3LDDPD/gN8Q9dTczffP0uHpENjRJKO1OtBB2mGeDDUeFbxZSV xeSwTEg+V2gf4z5XZDFhZAG5mlG5/DWs9h8+ggjDtJaLPRUrFnGPzb2RePm3cGfoVWGB e2lU7pKwjJ90pQ1mRejejZJ3WV2h6y6NOy2Inzidbq/6EqIEgZC7Lln45ASyiC/+/twc lPU1N/EBOvYuccHWlJrNV9sJLz21Gjq0uryxRZwNIpWwtJ0TjsYb74HbkpIVmD6r8XtJ haYvx3Ac0HyyR3SvukdyrtUrYlGlD9+Uv0oLC8H86Ls4s8hPKZjqiHaBIsi4wgeJBfMM rBPA== X-Gm-Message-State: AOJu0YznoFkGtY69ATyhRDA7+oNcZszxryg7ZkQh8Ii9x91nms82w/7x lus+xWQoO3DPbyJHplm5aDq7TkooTHUHuhry0UncoRs1Zq4HtllphAfOlk+OyA== X-Google-Smtp-Source: AGHT+IGpQCGkn5PhcSonCc4+J0cwxJctvKaSt5maet/T2RTVHwqbp8l0HU6o47fJUh/H4LTbscQw3g== X-Received: by 2002:a05:6a00:8e06:b0:6e6:8c49:f2f6 with SMTP id io6-20020a056a008e0600b006e68c49f2f6mr16252144pfb.24.1712150418636; Wed, 03 Apr 2024 06:20:18 -0700 (PDT) Received: from [127.0.1.1] ([103.28.246.48]) by smtp.gmail.com with ESMTPSA id r1-20020aa78441000000b006e69a142458sm11640518pfn.213.2024.04.03.06.20.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Apr 2024 06:20:18 -0700 (PDT) From: Manivannan Sadhasivam Date: Wed, 03 Apr 2024 18:50:04 +0530 Subject: [PATCH v2 2/2] scsi: ufs: qcom: Add sanity checks for gear/lane values during ICC scaling Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240403-ufs-icc-fix-v2-2-958412a5eb45@linaro.org> References: <20240403-ufs-icc-fix-v2-0-958412a5eb45@linaro.org> In-Reply-To: <20240403-ufs-icc-fix-v2-0-958412a5eb45@linaro.org> To: Bjorn Andersson , Konrad Dybcio , "James E.J. Bottomley" , "Martin K. Petersen" Cc: linux-arm-msm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1242; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=QMLyC7z7wrC4cQg2eqM+Dfe+kl12AbyhXTxgQxg+dJQ=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBmDVeJkgfnxTwqt6pwLJcFG/ywaqATm2PYnOmoZ 8RiTomJs4KJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZg1XiQAKCRBVnxHm/pHO 9WqlCACHiwIXIUVyW6PYemRimdhM9VGxKicBAzA1Xm4P8Jt7Xrv2D/sBmrrRoQ2ogK400Qpg9/G zyg6R9fpCortdbyi1rWC8JVtgeZGaM1GB1XeDq6Mdrtjt2nO41OaktIhw+oqtfSotEyBJCw13jb ItvI64Qq6igYPNiMd5WdO9Imo0yJuVQJ9tPcknCAHmzzWqCDDg7HaO03OJEjQf+O4KoU2WS2AOs 6pttNv6l5wDwvSzq19R1TG/eypF21m0hvxKRibAiKXO2TzqFtFndSI46tAIJd9zwxt3Kqx8pz/F bzI75lQksPSBnACjD+eg0zC78/FKcKIJFv622CeEIvRXX8nf X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 Let's add the checks to warn the user if the ICC scaling is not supported for the gear/lane values and also fallback to the max value if that's the case. Signed-off-by: Manivannan Sadhasivam Reviewed-by: Andrew Halaney --- drivers/ufs/host/ufs-qcom.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 696540ca835e..79b4ce05f7c5 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -696,6 +696,16 @@ static struct __ufs_qcom_bw_table ufs_qcom_get_bw_table(struct ufs_qcom_host *ho int gear = max_t(u32, p->gear_rx, p->gear_tx); int lane = max_t(u32, p->lane_rx, p->lane_tx); + if (WARN_ONCE(gear > QCOM_UFS_MAX_GEAR, + "ICC scaling for UFS Gear (%d) not supported. Using Gear (%d) bandwidth\n", + gear, QCOM_UFS_MAX_GEAR)) + gear = QCOM_UFS_MAX_GEAR; + + if (WARN_ONCE(lane > QCOM_UFS_MAX_LANE, + "ICC scaling for UFS Lane (%d) not supported. Using Lane (%d) bandwidth\n", + lane, QCOM_UFS_MAX_LANE)) + lane = QCOM_UFS_MAX_LANE; + if (ufshcd_is_hs_mode(p)) { if (p->hs_rate == PA_HS_MODE_B) return ufs_qcom_bw_table[MODE_HS_RB][gear][lane];