From nobody Mon Oct 6 01:49:54 2025 Received: from mail-wr1-f73.google.com (mail-wr1-f73.google.com [209.85.221.73]) (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 A4E8A2857F6 for ; Mon, 28 Jul 2025 17:53:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753725236; cv=none; b=XqPkdIqtur7TNvtDNUUhDL7teG2WMly/lbl+EgNoGewqAQoDCcaWfStOcs1Bt7a/Hh6GiKkBA1HAbv8tJIJpSqGHvgZvu6WyfudldYPM4khkKSiERqXFqg3QS0GuWpvtQzTkRX5SsAY/Rq26k8XoIK8aVpnlfkgJLLX1Ul5esiY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753725236; c=relaxed/simple; bh=dTOJzCAcVM/NCEsmIl4BGdJTrTBtAfQFPr+jJGgBymI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=WpWsZSn4cwh6viyk+bJR7ocJ37VvpcTcsjiwvlrcCpgDRs6EwAjX6YLySC88EOnU2YDeClQLxVI4PDbglLPk7lbb3nj6GlAsvOeQjdP+A+UJNTKiPjGykDLM12E0ZRDACDykZEeReADQMxu1ov+fSf2qCdcntNOXrZ4CXRs9EUc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--smostafa.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=YKZpGfDS; arc=none smtp.client-ip=209.85.221.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--smostafa.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="YKZpGfDS" Received: by mail-wr1-f73.google.com with SMTP id ffacd0b85a97d-3b7889c8d2bso660459f8f.3 for ; Mon, 28 Jul 2025 10:53:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1753725231; x=1754330031; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=jnrJ8rRpiFcwZt6jaLJ2PB3oGBNZG+6tYm8EfAOijts=; b=YKZpGfDSCshdtNR7kp9MqvN8VMH3ZuqlRKqKmpUBNA+H1FLsXsVXuuxFdWUZKtqhpY gtWoRdkcSbEg0EvPs2nPYS3EnioeqTzdBbfDRcuNJvFORokEqlS/h5qFjO9XesSBHucg Sdx0xZvmxBEysCRtseLF33uskozPsa+yYa0Z4Ah7SOIgwbcy1fmJ//XfAFByPCBdUa0i 5uE5MYkZr3Y9SWtRbCDbH9YSzO4fDIYF3OteZbSeKK3gKhxcCQSOzGPTZzL5M9RjLo75 Hs2NmZhCko03PnhkRhyuHGUNwibueJiIhEKmtwQeDuXJRdSDHENnHVXOF7q+zCGwSXpN k4JQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753725231; x=1754330031; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=jnrJ8rRpiFcwZt6jaLJ2PB3oGBNZG+6tYm8EfAOijts=; b=lm4qiLXzvki3T1uj5UqgaYTbQjYDRBFtNP33m2NWcuV/Ji9i4hs9tZTxTzjzg8cfYM Sk4Mk5qpLbAZDQZHulq2rADnf0MXtMWm2T5YtZQFJp6kP+u6NgEHfxqRwwuVKBHKROOW Y/GLuUyzxoMvQ/Qmp/9eJmO4y/Bc4DnbeFs4efMTBsOEMa5Sd46l8SzmnWB2k1DagA4W YLe1/z+8FPhVTi06+hu3e1fB1KqxP81VP3Q3nAZFBXte4PAkpJYZmhCk0qrVL42mOwEG eG5FXfL9hvTuTS8UIG0H4MtmjlUULVgMz0wyUnIz4OqpU26JRpU2zYM/GyRMKOodDKAm LsdA== X-Gm-Message-State: AOJu0YzQnq4v3dA4diAobSZMNiVWqhz0ujeObuu2o0/OJr+HGxbbmMbH efupE4cf8nlsyFpjG5qbok9qoBibTrS/g3BkFxQRGckAQ93KF3pE+lVmeWmeF2/0s5hwxqj/5Tq zuU90J6Kqa+PRxARSx+lfKx3r7RFFn/uQRjVDM+nUCybPK/udyVayLkAthTpxGji9Khbo1wtsCt 7AmR79o8Za2Cj9AMrRXwEdsLSmQRFzNeEvtLIxucd2WbBKtWFMDydSz3I= X-Google-Smtp-Source: AGHT+IGHsz9MPgnZj965sBmcV3dHVpcs8CmM+t34RmjDx7BARFkS1+Ew6W35n8N0of95SaKBxWolAPNzAtM27Q== X-Received: from wrs6.prod.google.com ([2002:a05:6000:646:b0:3b4:972f:ca5c]) (user=smostafa job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6000:651:b0:3b7:76ac:8b72 with SMTP id ffacd0b85a97d-3b776ac8dccmr7943968f8f.12.1753725231478; Mon, 28 Jul 2025 10:53:51 -0700 (PDT) Date: Mon, 28 Jul 2025 17:53:09 +0000 In-Reply-To: <20250728175316.3706196-1-smostafa@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250728175316.3706196-1-smostafa@google.com> X-Mailer: git-send-email 2.50.1.552.g942d659e1b-goog Message-ID: <20250728175316.3706196-23-smostafa@google.com> Subject: [PATCH v3 22/29] iommu/arm-smmu-v3-kvm: Reset the device From: Mostafa Saleh To: linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev Cc: maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, robin.murphy@arm.com, jean-philippe@linaro.org, qperret@google.com, tabba@google.com, jgg@ziepe.ca, mark.rutland@arm.com, praan@google.com, Mostafa Saleh Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jean-Philippe Brucker Now that all structures are initialized, send global invalidations and reset the SMMUv3 device. Signed-off-by: Jean-Philippe Brucker Signed-off-by: Mostafa Saleh --- .../iommu/arm/arm-smmu-v3/pkvm/arm-smmu-v3.c | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu-v3/pkvm/arm-smmu-v3.c b/drivers/iom= mu/arm/arm-smmu-v3/pkvm/arm-smmu-v3.c index 74e6dfb53528..5e988ffede92 100644 --- a/drivers/iommu/arm/arm-smmu-v3/pkvm/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/pkvm/arm-smmu-v3.c @@ -301,6 +301,40 @@ static int smmu_init_strtab(struct hyp_arm_smmu_v3_dev= ice *smmu) strtab_size >> PAGE_SHIFT, prot); } =20 +static int smmu_reset_device(struct hyp_arm_smmu_v3_device *smmu) +{ + int ret; + struct arm_smmu_cmdq_ent cfgi_cmd =3D { + .opcode =3D CMDQ_OP_CFGI_ALL, + }; + struct arm_smmu_cmdq_ent tlbi_cmd =3D { + .opcode =3D CMDQ_OP_TLBI_NSNH_ALL, + }; + + /* Invalidate all cached configs and TLBs */ + ret =3D smmu_write_cr0(smmu, CR0_CMDQEN); + if (ret) + return ret; + + ret =3D smmu_add_cmd(smmu, &cfgi_cmd); + if (ret) + goto err_disable_cmdq; + + ret =3D smmu_add_cmd(smmu, &tlbi_cmd); + if (ret) + goto err_disable_cmdq; + + ret =3D smmu_sync_cmd(smmu); + if (ret) + goto err_disable_cmdq; + + /* Enable translation */ + return smmu_write_cr0(smmu, CR0_SMMUEN | CR0_CMDQEN | CR0_ATSCHK); + +err_disable_cmdq: + return smmu_write_cr0(smmu, 0); +} + static int smmu_init_device(struct hyp_arm_smmu_v3_device *smmu) { int i; @@ -333,6 +367,9 @@ static int smmu_init_device(struct hyp_arm_smmu_v3_devi= ce *smmu) if (ret) goto out_err; =20 + ret =3D smmu_reset_device(smmu); + if (ret) + goto out_err; return ret; =20 out_err: --=20 2.50.1.552.g942d659e1b-goog