From patchwork Fri Oct 18 05:58:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13841174 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19FE7185B68 for ; Fri, 18 Oct 2024 05:58:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729231110; cv=none; b=OfM2gejJ/4x7OjnE1B+tMIF89Gw0QTYLpzKSMohFhzC+6M+bQ7iVbuS0H2aiDPzlm1seujClBFAJOiOM0CVQGuYbf6bzR88U4aMBjpaBFZhmyW4B+l2P0F2GCS7pImP3XsVuz+3/SjCLo9YnzWrxTKXB9On8A8LKbJWxiOiJGN0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729231110; c=relaxed/simple; bh=T7fBMWi071z7M1pLhief7DGpLGWGlmFH1yYzkvK762c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ocOkRAJ04KfQy4MOshfl2O2X0VypSRR5ejmcybk9ApJRsL00BKD999SfKg0N9rs2KNapOVtqxl4+Ns3wVMIGXc2GcmUyK+wJeVkvpp5nacaohNpUNioit3Vnk5mZw5ejMyKHnO2biAOQfHZQqQ9wFitpPLIc76Z7hLLrQ+h/uto= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hHI41tyZ; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hHI41tyZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1729231108; x=1760767108; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=T7fBMWi071z7M1pLhief7DGpLGWGlmFH1yYzkvK762c=; b=hHI41tyZN+sbbdQjSfvGf5lQMllU6/MkHhAIgfmkMwOsTfZMEFLCJRQt 2Ybw6OsazvK1qvH7ocsjApILZAHLMf1tVPbLckKVh0YV0TSZ1GGTEaczK k0aHlhAhcnJWAHqX7VWwY0sqXIPTycmTc8bpDXkecI51vFZMBnLR0GNrO hpwBdz/I40FGVPCGz8eU3YD4yqr72L/xfecoU/0Yaw+UTcNP+TWA4GHUw nK7tuhQ6qqp3ubIDxXjv7hUtVEoxWmeNxJMUrPdZlfmGBwB2iPH/hQ7JF /KexRPTz7jwATCzz+kCcrKSYzfwbB5glsmxwky29Gs76Ge083XDY8DmUu Q==; X-CSE-ConnectionGUID: 2ukODoyGQ9KBjhz8Ru+b2g== X-CSE-MsgGUID: LHvN+9wGTyCQaUPJ3IHCcg== X-IronPort-AV: E=McAfee;i="6700,10204,11222"; a="39879131" X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="39879131" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Oct 2024 22:58:27 -0700 X-CSE-ConnectionGUID: mCUYuPyqSDeqfzKB/nPR3g== X-CSE-MsgGUID: Xh6VZBgbRHyri+f8sBdP2A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,212,1725346800"; d="scan'208";a="78675730" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orviesa009.jf.intel.com with ESMTP; 17 Oct 2024 22:58:27 -0700 From: Yi Liu To: joro@8bytes.org, jgg@nvidia.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, will@kernel.org Cc: alex.williamson@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, iommu@lists.linux.dev, zhenzhong.duan@intel.com, vasant.hegde@amd.com Subject: [PATCH v2 2/3] iommu/arm-smmu-v3: Make the blocked domain support PASID Date: Thu, 17 Oct 2024 22:58:23 -0700 Message-Id: <20241018055824.24880-3-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241018055824.24880-1-yi.l.liu@intel.com> References: <20241018055824.24880-1-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jason Gunthorpe The blocked domain is used to park RID to be blocking DMA state. This can be extended to PASID as well. By this, the remove_dev_pasid() op of ARM SMMUv3 can be dropped. Signed-off-by: Jason Gunthorpe Reviewed-by: Kevin Tian Signed-off-by: Yi Liu --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index f70165f544df..ae68c7b7fcd5 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2961,13 +2961,12 @@ int arm_smmu_set_pasid(struct arm_smmu_master *master, return ret; } -static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid, - struct iommu_domain *domain) +static int arm_smmu_blocking_set_dev_pasid(struct iommu_domain *new_domain, + struct device *dev, ioasid_t pasid, + struct iommu_domain *old_domain) { + struct arm_smmu_domain *smmu_domain = to_smmu_domain(old_domain); struct arm_smmu_master *master = dev_iommu_priv_get(dev); - struct arm_smmu_domain *smmu_domain; - - smmu_domain = to_smmu_domain(domain); mutex_lock(&arm_smmu_asid_lock); arm_smmu_clear_cd(master, pasid); @@ -2988,6 +2987,7 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid, sid_domain->type == IOMMU_DOMAIN_BLOCKED) sid_domain->ops->attach_dev(sid_domain, dev); } + return 0; } static void arm_smmu_attach_dev_ste(struct iommu_domain *domain, @@ -3069,6 +3069,7 @@ static int arm_smmu_attach_dev_blocked(struct iommu_domain *domain, static const struct iommu_domain_ops arm_smmu_blocked_ops = { .attach_dev = arm_smmu_attach_dev_blocked, + .set_dev_pasid = arm_smmu_blocking_set_dev_pasid, }; static struct iommu_domain arm_smmu_blocked_domain = { @@ -3497,7 +3498,6 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, - .remove_dev_pasid = arm_smmu_remove_dev_pasid, .dev_enable_feat = arm_smmu_dev_enable_feature, .dev_disable_feat = arm_smmu_dev_disable_feature, .page_response = arm_smmu_page_response,