From patchwork Mon May 16 08:52:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mikko Perttunen X-Patchwork-Id: 12850426 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BDA2CC433F5 for ; Mon, 16 May 2022 08:55:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; 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=hkI2aiSZmRFJZSOMDK4kZvdYou9RExGS2hXLKLMUnZk=; b=GJv3HpVFYW1DHn fjZ1Pk9wxVVMKB0Xji7NUjvv0VW6gLU/5N8zaoGYVv+rGsLFXc6A+oenekw51KGP260QO8CmB46pv wAT7FLN+1aP/PoRZ0Mri3qOR+qmVQRb30zo2oj5DeCOo/pl6uvWSLGvnSsKEIDmwdDwTszequ7tp5 uP0oXXBqVHrkgYxPVW9LsGHTREDLa9tgrMf91rpduCkzBFhGoEX6rvyrwDnpqXQ0OtQlTLRB6iGCy fd21ESha4MetkfJOWY0GfvCD6NQ++KvnO2kvxyt5fA+wgl6+z3dC+dVUC9fUseSLlGwYl+45YGPcq 14clGr3iBPqOTp4qhR5g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqWUq-006lZD-PL; Mon, 16 May 2022 08:54:32 +0000 Received: from mail.kapsi.fi ([2001:67c:1be8::25]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqWU3-006l7w-9k for linux-arm-kernel@lists.infradead.org; Mon, 16 May 2022 08:53:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; 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:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Vo922W0aHAAexpm1efV+tBqrmfmNUmP8j5ep2MFHXzI=; b=GzP8u8SF9p0cN4zkGmR4Uz3VPM jIdv3uzyFyE6Pym67J1z6e9vyPoJzoqnPGBmDBhKvQFuT300HrPnt8t4UU/t/HFyFCfuiRpDB+YXL PNO9JC5LRtvq8VvWsY9QDCLR2k1uuRgK/aHyQuvGzO/leLKafHxcTUmp1eJuKAJWQZ/RkahfJ6HHU osVuUhWgQEm6zSenZju134tFWVHc3xtRZdZHCu5PZwvPKIAC7s4HtE4DMUnUjvOpBbYZ6+UIaSgga pgnZVh9uDtAZxcZzbPiw0E99cAtfekO54xmomnba/qVbLBaGTjz/86oYKmYyPi4/QS5UzpWADQOWH i6RGq9cg==; Received: from 91-158-25-70.elisa-laajakaista.fi ([91.158.25.70] helo=toshino.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nqWTe-0005fd-TS; Mon, 16 May 2022 11:53:18 +0300 From: cyndis@kapsi.fi To: thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, robh+dt@kernel.org, krzysztof.kozlowski@canonical.com Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Mikko Perttunen Subject: [PATCH v5 5/9] iommu/arm-smmu: Attach to host1x context device bus Date: Mon, 16 May 2022 11:52:54 +0300 Message-Id: <20220516085258.1227691-6-cyndis@kapsi.fi> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516085258.1227691-1-cyndis@kapsi.fi> References: <20220516085258.1227691-1-cyndis@kapsi.fi> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 91.158.25.70 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220516_015343_429285_326AD8A8 X-CRM114-Status: GOOD ( 10.91 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mikko Perttunen Set itself as the IOMMU for the host1x context device bus, containing "dummy" devices used for Host1x context isolation. Signed-off-by: Mikko Perttunen --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 568cce590ccc..9ff54eaecf81 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -39,6 +39,7 @@ #include #include +#include #include "arm-smmu.h" @@ -2053,8 +2054,20 @@ static int arm_smmu_bus_init(struct iommu_ops *ops) goto err_reset_pci_ops; } #endif +#ifdef CONFIG_TEGRA_HOST1X_CONTEXT_BUS + if (!iommu_present(&host1x_context_device_bus_type)) { + err = bus_set_iommu(&host1x_context_device_bus_type, ops); + if (err) + goto err_reset_fsl_mc_ops; + } +#endif + return 0; +err_reset_fsl_mc_ops: __maybe_unused; +#ifdef CONFIG_FSL_MC_BUS + bus_set_iommu(&fsl_mc_bus_type, NULL); +#endif err_reset_pci_ops: __maybe_unused; #ifdef CONFIG_PCI bus_set_iommu(&pci_bus_type, NULL);