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=-16.8 required=3.0 tests=BAYES_00,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 3E59DC433E0 for ; Mon, 1 Mar 2021 08:52:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EF53061494 for ; Mon, 1 Mar 2021 08:52:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233662AbhCAIwK (ORCPT ); Mon, 1 Mar 2021 03:52:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233391AbhCAIts (ORCPT ); Mon, 1 Mar 2021 03:49:48 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FECFC061793; Mon, 1 Mar 2021 00:48:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=bD29qdrhzRiITERPobenMjk3BMUizVOAgg7QS9JRwSM=; b=NSOkLMzI6zbyZQStLSNZkvPOPO UpWPJvXUzIA++EvwUMyqjpJFjGY6OygYi+ZSTKaMQ1KAIniM/5Uj/sR8K0JtCtxb+2QmkBNd9J/iR GYrvDiwGiqVELHyIbKz0OF+FoaKrrlSQkt/YnfUsrteo4uk756KkL9YZKPfaHghOFcz9YCmSwSJTM zYKJvJQsPu8djPSHyVybeJHvqZqgs+rcxt34NB52YgLEwTJtxsFMvlnKOeElSs8HRyeIzqyx326kb JrN6I8XymRALbzHGv5NUP/WOJMAundfmHMi0mzu6G8YEinmahYOBwzm9S2kIBFT2M7ZFXqwwKDxZI GNsA3T8w==; Received: from [2001:4bb8:19b:e4b7:cdf9:733f:4874:8eb4] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lGeE4-00FUv9-FI; Mon, 01 Mar 2021 08:48:27 +0000 From: Christoph Hellwig To: Joerg Roedel , Will Deacon , Li Yang Cc: Michael Ellerman , David Woodhouse , Lu Baolu , linuxppc-dev@lists.ozlabs.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Subject: [PATCH 15/17] iommu: remove DOMAIN_ATTR_NESTING Date: Mon, 1 Mar 2021 09:42:55 +0100 Message-Id: <20210301084257.945454-16-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210301084257.945454-1-hch@lst.de> References: <20210301084257.945454-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Signed-off-by: Christoph Hellwig --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++++++--------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++++++++++------ drivers/iommu/intel/iommu.c | 28 +++++---------- drivers/iommu/iommu.c | 8 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 ++- 6 files changed, 50 insertions(+), 65 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 bf96172e8c1f71..8e6fee3ea454d3 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2466,41 +2466,21 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->non_strict = true; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; } - -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -2603,7 +2583,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index e7893e96f5177a..2e17d990d04481 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1497,6 +1497,24 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; } +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; + + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { @@ -1508,17 +1526,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; @@ -1603,6 +1610,7 @@ static struct iommu_ops arm_smmu_ops = { .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index eaa80c33f4bc91..0f1374d6612a60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,22 @@ static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, } static int -intel_iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +intel_iommu_domain_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; + int ret = -ENODEV; if (domain->type != IOMMU_DOMAIN_UNMANAGED) return -EINVAL; - switch (attr) { - case DOMAIN_ATTR_NESTING: - spin_lock_irqsave(&device_domain_lock, flags); - if (nested_mode_support() && - list_empty(&dmar_domain->devices)) { - dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; - dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; - } else { - ret = -ENODEV; - } - spin_unlock_irqrestore(&device_domain_lock, flags); - break; - default: - ret = -EINVAL; - break; + spin_lock_irqsave(&device_domain_lock, flags); + if (nested_mode_support() && list_empty(&dmar_domain->devices)) { + dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; + dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; + ret = 0; } + spin_unlock_irqrestore(&device_domain_lock, flags); return ret; } @@ -5556,7 +5546,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .dma_use_flush_queue = intel_iommu_dma_use_flush_queue, - .domain_set_attr = intel_iommu_domain_set_attr, + .domain_enable_nesting = intel_iommu_domain_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, .aux_attach_dev = intel_iommu_aux_attach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0f12c4d58cdc42..2e9e058501a953 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2685,6 +2685,14 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_domain_enable_nesting(struct iommu_domain *domain) +{ + if (!domain->ops->domain_enable_nesting) + return -EINVAL; + return domain->ops->domain_enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c8e57f22f421c5..9cea4d80dd66ed 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2320,10 +2320,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, } if (iommu->nesting) { - int attr = 1; - - ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING, - &attr); + ret = iommu_domain_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f30de33c6ff56e..aed88aa3bd3edf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @dma_use_flush_queue: Returns %true if a DMA flush queue is used * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes + * @domain_enable_nesting: Enable nesting * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -248,6 +248,7 @@ struct iommu_ops { void (*dma_enable_flush_queue)(struct iommu_domain *domain); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*domain_enable_nesting)(struct iommu_domain *domain); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -494,6 +495,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_domain_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -- 2.29.2 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 5DFE1C433DB for ; Mon, 1 Mar 2021 08:50:33 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 C55ED64DE0 for ; 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Received: from [2001:4bb8:19b:e4b7:cdf9:733f:4874:8eb4] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lGeE4-00FUv9-FI; Mon, 01 Mar 2021 08:48:27 +0000 From: Christoph Hellwig To: Joerg Roedel , Will Deacon , Li Yang Subject: [PATCH 15/17] iommu: remove DOMAIN_ATTR_NESTING Date: Mon, 1 Mar 2021 09:42:55 +0100 Message-Id: <20210301084257.945454-16-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210301084257.945454-1-hch@lst.de> References: <20210301084257.945454-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: freedreno@lists.freedesktop.org, kvm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org, Lu Baolu Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Signed-off-by: Christoph Hellwig --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++++++--------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++++++++++------ drivers/iommu/intel/iommu.c | 28 +++++---------- drivers/iommu/iommu.c | 8 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 ++- 6 files changed, 50 insertions(+), 65 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 bf96172e8c1f71..8e6fee3ea454d3 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2466,41 +2466,21 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->non_strict = true; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; } - -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -2603,7 +2583,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index e7893e96f5177a..2e17d990d04481 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1497,6 +1497,24 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; } +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; + + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { @@ -1508,17 +1526,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; @@ -1603,6 +1610,7 @@ static struct iommu_ops arm_smmu_ops = { .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index eaa80c33f4bc91..0f1374d6612a60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,22 @@ static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, } static int -intel_iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +intel_iommu_domain_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; + int ret = -ENODEV; if (domain->type != IOMMU_DOMAIN_UNMANAGED) return -EINVAL; - switch (attr) { - case DOMAIN_ATTR_NESTING: - spin_lock_irqsave(&device_domain_lock, flags); - if (nested_mode_support() && - list_empty(&dmar_domain->devices)) { - dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; - dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; - } else { - ret = -ENODEV; - } - spin_unlock_irqrestore(&device_domain_lock, flags); - break; - default: - ret = -EINVAL; - break; + spin_lock_irqsave(&device_domain_lock, flags); + if (nested_mode_support() && list_empty(&dmar_domain->devices)) { + dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; + dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; + ret = 0; } + spin_unlock_irqrestore(&device_domain_lock, flags); return ret; } @@ -5556,7 +5546,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .dma_use_flush_queue = intel_iommu_dma_use_flush_queue, - .domain_set_attr = intel_iommu_domain_set_attr, + .domain_enable_nesting = intel_iommu_domain_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, .aux_attach_dev = intel_iommu_aux_attach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0f12c4d58cdc42..2e9e058501a953 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2685,6 +2685,14 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_domain_enable_nesting(struct iommu_domain *domain) +{ + if (!domain->ops->domain_enable_nesting) + return -EINVAL; + return domain->ops->domain_enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c8e57f22f421c5..9cea4d80dd66ed 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2320,10 +2320,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, } if (iommu->nesting) { - int attr = 1; - - ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING, - &attr); + ret = iommu_domain_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f30de33c6ff56e..aed88aa3bd3edf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @dma_use_flush_queue: Returns %true if a DMA flush queue is used * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes + * @domain_enable_nesting: Enable nesting * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -248,6 +248,7 @@ struct iommu_ops { void (*dma_enable_flush_queue)(struct iommu_domain *domain); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*domain_enable_nesting)(struct iommu_domain *domain); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -494,6 +495,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_domain_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -- 2.29.2 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 81BEAC433DB for ; Mon, 1 Mar 2021 08:49:07 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 30E4E64DE0 for ; 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See http://www.infradead.org/rpr.html Cc: freedreno@lists.freedesktop.org, kvm@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Signed-off-by: Christoph Hellwig --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++++++--------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++++++++++------ drivers/iommu/intel/iommu.c | 28 +++++---------- drivers/iommu/iommu.c | 8 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 ++- 6 files changed, 50 insertions(+), 65 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 bf96172e8c1f71..8e6fee3ea454d3 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2466,41 +2466,21 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->non_strict = true; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; } - -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -2603,7 +2583,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index e7893e96f5177a..2e17d990d04481 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1497,6 +1497,24 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; } +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; + + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { @@ -1508,17 +1526,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; @@ -1603,6 +1610,7 @@ static struct iommu_ops arm_smmu_ops = { .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index eaa80c33f4bc91..0f1374d6612a60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,22 @@ static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, } static int -intel_iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +intel_iommu_domain_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; + int ret = -ENODEV; if (domain->type != IOMMU_DOMAIN_UNMANAGED) return -EINVAL; - switch (attr) { - case DOMAIN_ATTR_NESTING: - spin_lock_irqsave(&device_domain_lock, flags); - if (nested_mode_support() && - list_empty(&dmar_domain->devices)) { - dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; - dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; - } else { - ret = -ENODEV; - } - spin_unlock_irqrestore(&device_domain_lock, flags); - break; - default: - ret = -EINVAL; - break; + spin_lock_irqsave(&device_domain_lock, flags); + if (nested_mode_support() && list_empty(&dmar_domain->devices)) { + dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; + dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; + ret = 0; } + spin_unlock_irqrestore(&device_domain_lock, flags); return ret; } @@ -5556,7 +5546,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .dma_use_flush_queue = intel_iommu_dma_use_flush_queue, - .domain_set_attr = intel_iommu_domain_set_attr, + .domain_enable_nesting = intel_iommu_domain_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, .aux_attach_dev = intel_iommu_aux_attach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0f12c4d58cdc42..2e9e058501a953 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2685,6 +2685,14 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_domain_enable_nesting(struct iommu_domain *domain) +{ + if (!domain->ops->domain_enable_nesting) + return -EINVAL; + return domain->ops->domain_enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c8e57f22f421c5..9cea4d80dd66ed 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2320,10 +2320,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, } if (iommu->nesting) { - int attr = 1; - - ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING, - &attr); + ret = iommu_domain_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f30de33c6ff56e..aed88aa3bd3edf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @dma_use_flush_queue: Returns %true if a DMA flush queue is used * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes + * @domain_enable_nesting: Enable nesting * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -248,6 +248,7 @@ struct iommu_ops { void (*dma_enable_flush_queue)(struct iommu_domain *domain); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*domain_enable_nesting)(struct iommu_domain *domain); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -494,6 +495,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_domain_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -- 2.29.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 EB16EC433E0 for ; Mon, 1 Mar 2021 08:49:06 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 AA8AE64DF1 for ; 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bh=bD29qdrhzRiITERPobenMjk3BMUizVOAgg7QS9JRwSM=; b=NSOkLMzI6zbyZQStLSNZkvPOPO UpWPJvXUzIA++EvwUMyqjpJFjGY6OygYi+ZSTKaMQ1KAIniM/5Uj/sR8K0JtCtxb+2QmkBNd9J/iR GYrvDiwGiqVELHyIbKz0OF+FoaKrrlSQkt/YnfUsrteo4uk756KkL9YZKPfaHghOFcz9YCmSwSJTM zYKJvJQsPu8djPSHyVybeJHvqZqgs+rcxt34NB52YgLEwTJtxsFMvlnKOeElSs8HRyeIzqyx326kb JrN6I8XymRALbzHGv5NUP/WOJMAundfmHMi0mzu6G8YEinmahYOBwzm9S2kIBFT2M7ZFXqwwKDxZI GNsA3T8w==; Received: from [2001:4bb8:19b:e4b7:cdf9:733f:4874:8eb4] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lGeE4-00FUv9-FI; Mon, 01 Mar 2021 08:48:27 +0000 From: Christoph Hellwig To: Joerg Roedel , Will Deacon , Li Yang Subject: [PATCH 15/17] iommu: remove DOMAIN_ATTR_NESTING Date: Mon, 1 Mar 2021 09:42:55 +0100 Message-Id: <20210301084257.945454-16-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210301084257.945454-1-hch@lst.de> References: <20210301084257.945454-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Cc: freedreno@lists.freedesktop.org, kvm@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org, Lu Baolu X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Signed-off-by: Christoph Hellwig --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++++++--------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++++++++++------ drivers/iommu/intel/iommu.c | 28 +++++---------- drivers/iommu/iommu.c | 8 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 ++- 6 files changed, 50 insertions(+), 65 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 bf96172e8c1f71..8e6fee3ea454d3 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2466,41 +2466,21 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->non_strict = true; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; } - -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -2603,7 +2583,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index e7893e96f5177a..2e17d990d04481 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1497,6 +1497,24 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; } +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; + + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { @@ -1508,17 +1526,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; @@ -1603,6 +1610,7 @@ static struct iommu_ops arm_smmu_ops = { .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index eaa80c33f4bc91..0f1374d6612a60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,22 @@ static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, } static int -intel_iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +intel_iommu_domain_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; + int ret = -ENODEV; if (domain->type != IOMMU_DOMAIN_UNMANAGED) return -EINVAL; - switch (attr) { - case DOMAIN_ATTR_NESTING: - spin_lock_irqsave(&device_domain_lock, flags); - if (nested_mode_support() && - list_empty(&dmar_domain->devices)) { - dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; - dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; - } else { - ret = -ENODEV; - } - spin_unlock_irqrestore(&device_domain_lock, flags); - break; - default: - ret = -EINVAL; - break; + spin_lock_irqsave(&device_domain_lock, flags); + if (nested_mode_support() && list_empty(&dmar_domain->devices)) { + dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; + dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; + ret = 0; } + spin_unlock_irqrestore(&device_domain_lock, flags); return ret; } @@ -5556,7 +5546,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .dma_use_flush_queue = intel_iommu_dma_use_flush_queue, - .domain_set_attr = intel_iommu_domain_set_attr, + .domain_enable_nesting = intel_iommu_domain_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, .aux_attach_dev = intel_iommu_aux_attach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0f12c4d58cdc42..2e9e058501a953 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2685,6 +2685,14 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_domain_enable_nesting(struct iommu_domain *domain) +{ + if (!domain->ops->domain_enable_nesting) + return -EINVAL; + return domain->ops->domain_enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c8e57f22f421c5..9cea4d80dd66ed 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2320,10 +2320,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, } if (iommu->nesting) { - int attr = 1; - - ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING, - &attr); + ret = iommu_domain_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f30de33c6ff56e..aed88aa3bd3edf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @dma_use_flush_queue: Returns %true if a DMA flush queue is used * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes + * @domain_enable_nesting: Enable nesting * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -248,6 +248,7 @@ struct iommu_ops { void (*dma_enable_flush_queue)(struct iommu_domain *domain); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*domain_enable_nesting)(struct iommu_domain *domain); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -494,6 +495,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_domain_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -- 2.29.2 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization 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=-16.8 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 35BAEC433E6 for ; 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bh=bD29qdrhzRiITERPobenMjk3BMUizVOAgg7QS9JRwSM=; b=NSOkLMzI6zbyZQStLSNZkvPOPO UpWPJvXUzIA++EvwUMyqjpJFjGY6OygYi+ZSTKaMQ1KAIniM/5Uj/sR8K0JtCtxb+2QmkBNd9J/iR GYrvDiwGiqVELHyIbKz0OF+FoaKrrlSQkt/YnfUsrteo4uk756KkL9YZKPfaHghOFcz9YCmSwSJTM zYKJvJQsPu8djPSHyVybeJHvqZqgs+rcxt34NB52YgLEwTJtxsFMvlnKOeElSs8HRyeIzqyx326kb JrN6I8XymRALbzHGv5NUP/WOJMAundfmHMi0mzu6G8YEinmahYOBwzm9S2kIBFT2M7ZFXqwwKDxZI GNsA3T8w==; Received: from [2001:4bb8:19b:e4b7:cdf9:733f:4874:8eb4] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lGeE4-00FUv9-FI; Mon, 01 Mar 2021 08:48:27 +0000 From: Christoph Hellwig To: Joerg Roedel , Will Deacon , Li Yang Subject: [PATCH 15/17] iommu: remove DOMAIN_ATTR_NESTING Date: Mon, 1 Mar 2021 09:42:55 +0100 Message-Id: <20210301084257.945454-16-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210301084257.945454-1-hch@lst.de> References: <20210301084257.945454-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: freedreno@lists.freedesktop.org, kvm@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, David Woodhouse , linux-arm-kernel@lists.infradead.org, Lu Baolu 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 Signed-off-by: Christoph Hellwig --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 40 ++++++--------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 ++++++++++------ drivers/iommu/intel/iommu.c | 28 +++++---------- drivers/iommu/iommu.c | 8 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 ++- 6 files changed, 50 insertions(+), 65 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 bf96172e8c1f71..8e6fee3ea454d3 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2466,41 +2466,21 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->non_strict = true; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; - mutex_lock(&smmu_domain->init_mutex); + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; - default: - ret = -ENODEV; - } - break; - case IOMMU_DOMAIN_DMA: - ret = -ENODEV; - break; - default: - ret = -EINVAL; + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; } - -out_unlock: mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -2603,7 +2583,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, - .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index e7893e96f5177a..2e17d990d04481 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1497,6 +1497,24 @@ static void arm_smmu_dma_enable_flush_queue(struct iommu_domain *domain) to_smmu_domain(domain)->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; } +static int arm_smmu_domain_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = -EPERM; + + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + if (!smmu_domain->smmu) { + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + ret = 0; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { @@ -1508,17 +1526,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - if (*(int *)data) - smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; - else - smmu_domain->stage = ARM_SMMU_DOMAIN_S1; - break; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; @@ -1603,6 +1610,7 @@ static struct iommu_ops arm_smmu_ops = { .dma_use_flush_queue = arm_smmu_dma_use_flush_queue, .dma_enable_flush_queue = arm_smmu_dma_enable_flush_queue, .domain_set_attr = arm_smmu_domain_set_attr, + .domain_enable_nesting = arm_smmu_domain_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index eaa80c33f4bc91..0f1374d6612a60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,22 @@ static bool intel_iommu_is_attach_deferred(struct iommu_domain *domain, } static int -intel_iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +intel_iommu_domain_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; + int ret = -ENODEV; if (domain->type != IOMMU_DOMAIN_UNMANAGED) return -EINVAL; - switch (attr) { - case DOMAIN_ATTR_NESTING: - spin_lock_irqsave(&device_domain_lock, flags); - if (nested_mode_support() && - list_empty(&dmar_domain->devices)) { - dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; - dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; - } else { - ret = -ENODEV; - } - spin_unlock_irqrestore(&device_domain_lock, flags); - break; - default: - ret = -EINVAL; - break; + spin_lock_irqsave(&device_domain_lock, flags); + if (nested_mode_support() && list_empty(&dmar_domain->devices)) { + dmar_domain->flags |= DOMAIN_FLAG_NESTING_MODE; + dmar_domain->flags &= ~DOMAIN_FLAG_USE_FIRST_LEVEL; + ret = 0; } + spin_unlock_irqrestore(&device_domain_lock, flags); return ret; } @@ -5556,7 +5546,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .dma_use_flush_queue = intel_iommu_dma_use_flush_queue, - .domain_set_attr = intel_iommu_domain_set_attr, + .domain_enable_nesting = intel_iommu_domain_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, .aux_attach_dev = intel_iommu_aux_attach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0f12c4d58cdc42..2e9e058501a953 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2685,6 +2685,14 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_domain_enable_nesting(struct iommu_domain *domain) +{ + if (!domain->ops->domain_enable_nesting) + return -EINVAL; + return domain->ops->domain_enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_domain_enable_nesting); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index c8e57f22f421c5..9cea4d80dd66ed 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2320,10 +2320,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, } if (iommu->nesting) { - int attr = 1; - - ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING, - &attr); + ret = iommu_domain_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f30de33c6ff56e..aed88aa3bd3edf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @dma_use_flush_queue: Returns %true if a DMA flush queue is used * @dma_enable_flush_queue: Try to enable the DMA flush queue * @domain_set_attr: Change domain attributes + * @domain_enable_nesting: Enable nesting * @get_resv_regions: Request list of reserved regions for a device * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges @@ -248,6 +248,7 @@ struct iommu_ops { void (*dma_enable_flush_queue)(struct iommu_domain *domain); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*domain_enable_nesting)(struct iommu_domain *domain); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -494,6 +495,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); bool iommu_dma_use_flush_queue(struct iommu_domain *domain); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_domain_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel