From patchwork Tue Mar 16 15:38:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142599 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 9C826C4332E for ; Tue, 16 Mar 2021 15:49:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 737CD650FD for ; Tue, 16 Mar 2021 15:49:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230127AbhCPPtG (ORCPT ); Tue, 16 Mar 2021 11:49:06 -0400 Received: from casper.infradead.org ([90.155.50.34]:39180 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230118AbhCPPst (ORCPT ); Tue, 16 Mar 2021 11:48:49 -0400 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=iw+fifO7jrg/z05+P9SvlFTQmtqEOKLWF4/W63fZSxg=; b=t8rWyJbHNRA+UdMLiAjEgLyDck M+oVJgU7mMVSpeTyf1YPJI2RGqBN3Sn9PFh94Tt6X8WVm0claWr2KRveHeGUslpukjM6021i8VVBe ssNC9EADHuhaXovE2EAOdZ4HeCHi3cv5pZI4mIecJDA/63eHhSIoS9Z1+v7buOcgx4JwQLb8XLsyx xRZ3DxAOxonTDtzuxqSHKRwT0oOjxGyH/gr3wj9utxLuYw9mok8rdNoakTiZj7k/VNJiBlfkYDt+a qHIiUMUrvM9EkvpjGvbvgckkoVGdIgUJSCpXRj+w1toY53CSWJG7Tpu5DPfUwLKKgwCdjYatVnt4k eXidtaZQ==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMBqQ-000Fk5-G4; Tue, 16 Mar 2021 15:42:58 +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 01/18] iommu: remove the unused domain_window_disable method Date: Tue, 16 Mar 2021 16:38:07 +0100 Message-Id: <20210316153825.135976-2-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org domain_window_disable is wired up by fsl_pamu, but never actually called. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 48 --------------------------------- include/linux/iommu.h | 2 -- 2 files changed, 50 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index b2110767caf49c..53380cf1fa452f 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -473,53 +473,6 @@ static int update_domain_mapping(struct fsl_dma_domain *dma_domain, u32 wnd_nr) return ret; } -static int disable_domain_win(struct fsl_dma_domain *dma_domain, u32 wnd_nr) -{ - struct device_domain_info *info; - int ret = 0; - - list_for_each_entry(info, &dma_domain->devices, link) { - if (dma_domain->win_cnt == 1 && dma_domain->enabled) { - ret = pamu_disable_liodn(info->liodn); - if (!ret) - dma_domain->enabled = 0; - } else { - ret = pamu_disable_spaace(info->liodn, wnd_nr); - } - } - - return ret; -} - -static void fsl_pamu_window_disable(struct iommu_domain *domain, u32 wnd_nr) -{ - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - unsigned long flags; - int ret; - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - if (!dma_domain->win_arr) { - pr_debug("Number of windows not configured\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return; - } - - if (wnd_nr >= dma_domain->win_cnt) { - pr_debug("Invalid window index\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return; - } - - if (dma_domain->win_arr[wnd_nr].valid) { - ret = disable_domain_win(dma_domain, wnd_nr); - if (!ret) { - dma_domain->win_arr[wnd_nr].valid = 0; - dma_domain->mapped--; - } - } - - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); -} static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr, phys_addr_t paddr, u64 size, int prot) @@ -1032,7 +985,6 @@ static const struct iommu_ops fsl_pamu_ops = { .attach_dev = fsl_pamu_attach_device, .detach_dev = fsl_pamu_detach_device, .domain_window_enable = fsl_pamu_window_enable, - .domain_window_disable = fsl_pamu_window_disable, .iova_to_phys = fsl_pamu_iova_to_phys, .domain_set_attr = fsl_pamu_set_domain_attr, .domain_get_attr = fsl_pamu_get_domain_attr, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 5e7fe519430af4..47c8b318d8f523 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -209,7 +209,6 @@ struct iommu_iotlb_gather { * @put_resv_regions: Free list of reserved regions for a device * @apply_resv_region: Temporary helper call-back for iova reserved ranges * @domain_window_enable: Configure and enable a particular window for a domain - * @domain_window_disable: Disable a particular window for a domain * @of_xlate: add OF master IDs to iommu grouping * @is_attach_deferred: Check if domain attach should be deferred from iommu * driver init to device driver init (default no) @@ -270,7 +269,6 @@ struct iommu_ops { /* Window handling functions */ int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, phys_addr_t paddr, u64 size, int prot); - void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); int (*of_xlate)(struct device *dev, struct of_phandle_args *args); bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev); From patchwork Tue Mar 16 15:38:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142601 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 178B6C4332B for ; Tue, 16 Mar 2021 15:50:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F189965100 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMBsf-000FwZ-DA; Tue, 16 Mar 2021 15:45:16 +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 02/18] iommu/fsl_pamu: remove fsl_pamu_get_domain_attr Date: Tue, 16 Mar 2021 16:38:08 +0100 Message-Id: <20210316153825.135976-3-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org None of the values returned by this function are ever queried. Also remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 30 ------------------------------ include/linux/iommu.h | 4 ---- 2 files changed, 34 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 53380cf1fa452f..e587ec43f7e750 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -832,35 +832,6 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, return ret; } -static int fsl_pamu_get_domain_attr(struct iommu_domain *domain, - enum iommu_attr attr_type, void *data) -{ - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - int ret = 0; - - switch (attr_type) { - case DOMAIN_ATTR_FSL_PAMU_STASH: - memcpy(data, &dma_domain->dma_stash, - sizeof(struct pamu_stash_attribute)); - break; - case DOMAIN_ATTR_FSL_PAMU_ENABLE: - *(int *)data = dma_domain->enabled; - break; - case DOMAIN_ATTR_FSL_PAMUV1: - *(int *)data = DOMAIN_ATTR_FSL_PAMUV1; - break; - case DOMAIN_ATTR_WINDOWS: - *(u32 *)data = dma_domain->win_cnt; - break; - default: - pr_debug("Unsupported attribute type\n"); - ret = -EINVAL; - break; - } - - return ret; -} - static struct iommu_group *get_device_iommu_group(struct device *dev) { struct iommu_group *group; @@ -987,7 +958,6 @@ static const struct iommu_ops fsl_pamu_ops = { .domain_window_enable = fsl_pamu_window_enable, .iova_to_phys = fsl_pamu_iova_to_phys, .domain_set_attr = fsl_pamu_set_domain_attr, - .domain_get_attr = fsl_pamu_get_domain_attr, .probe_device = fsl_pamu_probe_device, .release_device = fsl_pamu_release_device, .device_group = fsl_pamu_device_group, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 47c8b318d8f523..52874ae164dd60 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -104,9 +104,6 @@ enum iommu_cap { * -the actual size of the mapped region of a window must be power * of 2 starting with 4KB and physical address must be naturally * aligned. - * DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints. - * The caller can invoke iommu_domain_get_attr to check if the underlying - * iommu implementation supports these constraints. */ enum iommu_attr { @@ -115,7 +112,6 @@ enum iommu_attr { DOMAIN_ATTR_WINDOWS, DOMAIN_ATTR_FSL_PAMU_STASH, DOMAIN_ATTR_FSL_PAMU_ENABLE, - DOMAIN_ATTR_FSL_PAMUV1, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, From patchwork Tue Mar 16 15:38:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142597 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 34BFBC433E9 for ; Tue, 16 Mar 2021 15:49:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 128B8650F3 for ; Tue, 16 Mar 2021 15:49:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237355AbhCPPsc (ORCPT ); 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Tue, 16 Mar 2021 15:47:42 +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 03/18] iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRY Date: Tue, 16 Mar 2021 16:38:09 +0100 Message-Id: <20210316153825.135976-4-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The default geometry is the same as the one set by qman_port given that FSL_PAMU depends on having 64-bit physical and thus DMA addresses. Remove the support to update the geometry and remove the now pointless geom_size field. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 55 +++-------------------------- drivers/iommu/fsl_pamu_domain.h | 6 ---- drivers/soc/fsl/qbman/qman_portal.c | 12 ------- 3 files changed, 5 insertions(+), 68 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index e587ec43f7e750..7bd08ddad07779 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -62,7 +62,7 @@ static phys_addr_t get_phys_addr(struct fsl_dma_domain *dma_domain, dma_addr_t i geom = &dma_domain->iommu_domain.geometry; - if (!win_cnt || !dma_domain->geom_size) { + if (!win_cnt) { pr_debug("Number of windows/geometry not configured for the domain\n"); return 0; } @@ -72,7 +72,7 @@ static phys_addr_t get_phys_addr(struct fsl_dma_domain *dma_domain, dma_addr_t i dma_addr_t subwin_iova; u32 wnd; - subwin_size = dma_domain->geom_size >> ilog2(win_cnt); + subwin_size = (geom->aperture_end + 1) >> ilog2(win_cnt); subwin_iova = iova & ~(subwin_size - 1); wnd = (subwin_iova - geom->aperture_start) >> ilog2(subwin_size); win_ptr = &dma_domain->win_arr[wnd]; @@ -234,7 +234,7 @@ static int pamu_set_liodn(int liodn, struct device *dev, get_ome_index(&omi_index, dev); window_addr = geom_attr->aperture_start; - window_size = dma_domain->geom_size; + window_size = geom_attr->aperture_end + 1; spin_lock_irqsave(&iommu_lock, flags); ret = pamu_disable_liodn(liodn); @@ -303,7 +303,6 @@ static struct fsl_dma_domain *iommu_alloc_dma_domain(void) domain->stash_id = ~(u32)0; domain->snoop_id = ~(u32)0; domain->win_cnt = pamu_get_max_subwin_cnt(); - domain->geom_size = 0; INIT_LIST_HEAD(&domain->devices); @@ -502,7 +501,8 @@ static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr, return -EINVAL; } - win_size = dma_domain->geom_size >> ilog2(dma_domain->win_cnt); + win_size = (domain->geometry.aperture_end + 1) >> + ilog2(dma_domain->win_cnt); if (size > win_size) { pr_debug("Invalid window size\n"); spin_unlock_irqrestore(&dma_domain->domain_lock, flags); @@ -665,41 +665,6 @@ static void fsl_pamu_detach_device(struct iommu_domain *domain, pr_debug("missing fsl,liodn property at %pOF\n", dev->of_node); } -static int configure_domain_geometry(struct iommu_domain *domain, void *data) -{ - struct iommu_domain_geometry *geom_attr = data; - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - dma_addr_t geom_size; - unsigned long flags; - - geom_size = geom_attr->aperture_end - geom_attr->aperture_start + 1; - /* - * Sanity check the geometry size. Also, we do not support - * DMA outside of the geometry. - */ - if (check_size(geom_size, geom_attr->aperture_start) || - !geom_attr->force_aperture) { - pr_debug("Invalid PAMU geometry attributes\n"); - return -EINVAL; - } - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - if (dma_domain->enabled) { - pr_debug("Can't set geometry attributes as domain is active\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EBUSY; - } - - /* Copy the domain geometry information */ - memcpy(&domain->geometry, geom_attr, - sizeof(struct iommu_domain_geometry)); - dma_domain->geom_size = geom_size; - - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - - return 0; -} - /* Set the domain stash attribute */ static int configure_domain_stash(struct fsl_dma_domain *dma_domain, void *data) { @@ -769,13 +734,6 @@ static int fsl_pamu_set_windows(struct iommu_domain *domain, u32 w_count) return -EBUSY; } - /* Ensure that the geometry has been set for the domain */ - if (!dma_domain->geom_size) { - pr_debug("Please configure geometry before setting the number of windows\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } - /* * Ensure we have valid window count i.e. it should be less than * maximum permissible limit and should be a power of two. @@ -811,9 +769,6 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, int ret = 0; switch (attr_type) { - case DOMAIN_ATTR_GEOMETRY: - ret = configure_domain_geometry(domain, data); - break; case DOMAIN_ATTR_FSL_PAMU_STASH: ret = configure_domain_stash(dma_domain, data); break; diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index 2865d42782e802..53d359d66fe577 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -17,12 +17,6 @@ struct dma_window { }; struct fsl_dma_domain { - /* - * Indicates the geometry size for the domain. - * This would be set when the geometry is - * configured for the domain. - */ - dma_addr_t geom_size; /* * Number of windows assocaited with this domain. * During domain initialization, it is set to the diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 5685b67068931a..c958e6310d3094 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -47,7 +47,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) #ifdef CONFIG_FSL_PAMU struct device *dev = pcfg->dev; int window_count = 1; - struct iommu_domain_geometry geom_attr; struct pamu_stash_attribute stash_attr; int ret; @@ -56,17 +55,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__); goto no_iommu; } - geom_attr.aperture_start = 0; - geom_attr.aperture_end = - ((dma_addr_t)1 << min(8 * sizeof(dma_addr_t), (size_t)36)) - 1; - geom_attr.force_aperture = true; - ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_GEOMETRY, - &geom_attr); - if (ret < 0) { - dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__, - ret); - goto out_domain_free; - } ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_WINDOWS, &window_count); if (ret < 0) { From patchwork Tue Mar 16 15:38:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142603 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 26730C433E9 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMBxO-000GJk-5v; Tue, 16 Mar 2021 15:50:08 +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 04/18] iommu/fsl_pamu: merge iommu_alloc_dma_domain into fsl_pamu_domain_alloc Date: Tue, 16 Mar 2021 16:38:10 +0100 Message-Id: <20210316153825.135976-5-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Keep the functionality to allocate the domain together. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 34 ++++++++++----------------------- 1 file changed, 10 insertions(+), 24 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 7bd08ddad07779..a4da5597755d3d 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -292,25 +292,6 @@ static int check_size(u64 size, dma_addr_t iova) return 0; } -static struct fsl_dma_domain *iommu_alloc_dma_domain(void) -{ - struct fsl_dma_domain *domain; - - domain = kmem_cache_zalloc(fsl_pamu_domain_cache, GFP_KERNEL); - if (!domain) - return NULL; - - domain->stash_id = ~(u32)0; - domain->snoop_id = ~(u32)0; - domain->win_cnt = pamu_get_max_subwin_cnt(); - - INIT_LIST_HEAD(&domain->devices); - - spin_lock_init(&domain->domain_lock); - - return domain; -} - static void remove_device_ref(struct device_domain_info *info, u32 win_cnt) { unsigned long flags; @@ -412,12 +393,17 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) if (type != IOMMU_DOMAIN_UNMANAGED) return NULL; - dma_domain = iommu_alloc_dma_domain(); - if (!dma_domain) { - pr_debug("dma_domain allocation failed\n"); + dma_domain = kmem_cache_zalloc(fsl_pamu_domain_cache, GFP_KERNEL); + if (!dma_domain) return NULL; - } - /* defaul geometry 64 GB i.e. maximum system address */ + + dma_domain->stash_id = ~(u32)0; + dma_domain->snoop_id = ~(u32)0; + dma_domain->win_cnt = pamu_get_max_subwin_cnt(); + INIT_LIST_HEAD(&dma_domain->devices); + spin_lock_init(&dma_domain->domain_lock); + + /* default geometry 64 GB i.e. maximum system address */ dma_domain->iommu_domain. geometry.aperture_start = 0; dma_domain->iommu_domain.geometry.aperture_end = (1ULL << 36) - 1; dma_domain->iommu_domain.geometry.force_aperture = true; From patchwork Tue Mar 16 15:38:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142649 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 C8DCAC433E6 for ; Tue, 16 Mar 2021 15:54:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4DD665102 for ; Tue, 16 Mar 2021 15:54:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238207AbhCPPx4 (ORCPT ); Tue, 16 Mar 2021 11:53:56 -0400 Received: from casper.infradead.org ([90.155.50.34]:39536 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238033AbhCPPxZ (ORCPT ); Tue, 16 Mar 2021 11:53:25 -0400 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=yL/rpZ+dwVxCaHfi8ptpEwo5LHrOu8AvTZTFWQZeAlk=; b=Jv0f3rYbx07VR2QhxD088R4zXW /4MBGLUY6ahWVCV9tyapzkNr/t/on1Tx4jmPCgxBNMjPe4mqSKQiI1dkL6zEqJIZZKTHN+OWYre04 6Mr2dtP9W4buOJei+TKGCfsJzwwZqEfkc6PYaejELs5EOj9oxfmNLzf7wSiSoEWytDoBq6/of3Y5y 8WLqaP7Cnsp3p8iaE7myoFzTtJY4IGO8EEYmk78gpPoLyOiEdh2OKAK010cTUpyNNtCaaF6FGR7S4 aodwPDjwwo5f3zuHuGJrZX3Gn7Dw+buFOWARz6dzcwvNxDj8DCpQS6id4+Atrxg9OY90G6galnWAI 09Y3DaiA==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMBzf-000GR4-K0; Tue, 16 Mar 2021 15:52:34 +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 05/18] iommu/fsl_pamu: remove support for multiple windows Date: Tue, 16 Mar 2021 16:38:11 +0100 Message-Id: <20210316153825.135976-6-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The only domains allocated forces use of a single window. Remove all the code related to multiple window support, as well as the need for qman_portal to force a single window. Remove the now unused DOMAIN_ATTR_WINDOWS iommu_attr. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu.c | 264 +------------------------- drivers/iommu/fsl_pamu.h | 10 +- drivers/iommu/fsl_pamu_domain.c | 275 +++++----------------------- drivers/iommu/fsl_pamu_domain.h | 12 +- drivers/soc/fsl/qbman/qman_portal.c | 7 - include/linux/iommu.h | 1 - 6 files changed, 59 insertions(+), 510 deletions(-) diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c index b9a974d9783113..3e1647cd5ad47a 100644 --- a/drivers/iommu/fsl_pamu.c +++ b/drivers/iommu/fsl_pamu.c @@ -63,19 +63,6 @@ static const struct of_device_id l3_device_ids[] = { /* maximum subwindows permitted per liodn */ static u32 max_subwindow_count; -/* Pool for fspi allocation */ -static struct gen_pool *spaace_pool; - -/** - * pamu_get_max_subwin_cnt() - Return the maximum supported - * subwindow count per liodn. - * - */ -u32 pamu_get_max_subwin_cnt(void) -{ - return max_subwindow_count; -} - /** * pamu_get_ppaace() - Return the primary PACCE * @liodn: liodn PAACT index for desired PAACE @@ -155,13 +142,6 @@ static unsigned int map_addrspace_size_to_wse(phys_addr_t addrspace_size) return fls64(addrspace_size) - 2; } -/* Derive the PAACE window count encoding for the subwindow count */ -static unsigned int map_subwindow_cnt_to_wce(u32 subwindow_cnt) -{ - /* window count is 2^(WCE+1) bytes */ - return __ffs(subwindow_cnt) - 1; -} - /* * Set the PAACE type as primary and set the coherency required domain * attribute @@ -174,89 +154,11 @@ static void pamu_init_ppaace(struct paace *ppaace) PAACE_M_COHERENCE_REQ); } -/* - * Set the PAACE type as secondary and set the coherency required domain - * attribute. - */ -static void pamu_init_spaace(struct paace *spaace) -{ - set_bf(spaace->addr_bitfields, PAACE_AF_PT, PAACE_PT_SECONDARY); - set_bf(spaace->domain_attr.to_host.coherency_required, PAACE_DA_HOST_CR, - PAACE_M_COHERENCE_REQ); -} - -/* - * Return the spaace (corresponding to the secondary window index) - * for a particular ppaace. - */ -static struct paace *pamu_get_spaace(struct paace *paace, u32 wnum) -{ - u32 subwin_cnt; - struct paace *spaace = NULL; - - subwin_cnt = 1UL << (get_bf(paace->impl_attr, PAACE_IA_WCE) + 1); - - if (wnum < subwin_cnt) - spaace = &spaact[paace->fspi + wnum]; - else - pr_debug("secondary paace out of bounds\n"); - - return spaace; -} - -/** - * pamu_get_fspi_and_allocate() - Allocates fspi index and reserves subwindows - * required for primary PAACE in the secondary - * PAACE table. - * @subwin_cnt: Number of subwindows to be reserved. - * - * A PPAACE entry may have a number of associated subwindows. A subwindow - * corresponds to a SPAACE entry in the SPAACT table. Each PAACE entry stores - * the index (fspi) of the first SPAACE entry in the SPAACT table. This - * function returns the index of the first SPAACE entry. The remaining - * SPAACE entries are reserved contiguously from that index. - * - * Returns a valid fspi index in the range of 0 - SPAACE_NUMBER_ENTRIES on success. - * If no SPAACE entry is available or the allocator can not reserve the required - * number of contiguous entries function returns ULONG_MAX indicating a failure. - * - */ -static unsigned long pamu_get_fspi_and_allocate(u32 subwin_cnt) -{ - unsigned long spaace_addr; - - spaace_addr = gen_pool_alloc(spaace_pool, subwin_cnt * sizeof(struct paace)); - if (!spaace_addr) - return ULONG_MAX; - - return (spaace_addr - (unsigned long)spaact) / (sizeof(struct paace)); -} - -/* Release the subwindows reserved for a particular LIODN */ -void pamu_free_subwins(int liodn) -{ - struct paace *ppaace; - u32 subwin_cnt, size; - - ppaace = pamu_get_ppaace(liodn); - if (!ppaace) { - pr_debug("Invalid liodn entry\n"); - return; - } - - if (get_bf(ppaace->addr_bitfields, PPAACE_AF_MW)) { - subwin_cnt = 1UL << (get_bf(ppaace->impl_attr, PAACE_IA_WCE) + 1); - size = (subwin_cnt - 1) * sizeof(struct paace); - gen_pool_free(spaace_pool, (unsigned long)&spaact[ppaace->fspi], size); - set_bf(ppaace->addr_bitfields, PPAACE_AF_MW, 0); - } -} - /* * Function used for updating stash destination for the coressponding * LIODN. */ -int pamu_update_paace_stash(int liodn, u32 subwin, u32 value) +int pamu_update_paace_stash(int liodn, u32 value) { struct paace *paace; @@ -265,11 +167,6 @@ int pamu_update_paace_stash(int liodn, u32 subwin, u32 value) pr_debug("Invalid liodn entry\n"); return -ENOENT; } - if (subwin) { - paace = pamu_get_spaace(paace, subwin - 1); - if (!paace) - return -ENOENT; - } set_bf(paace->impl_attr, PAACE_IA_CID, value); mb(); @@ -277,31 +174,6 @@ int pamu_update_paace_stash(int liodn, u32 subwin, u32 value) return 0; } -/* Disable a subwindow corresponding to the LIODN */ -int pamu_disable_spaace(int liodn, u32 subwin) -{ - struct paace *paace; - - paace = pamu_get_ppaace(liodn); - if (!paace) { - pr_debug("Invalid liodn entry\n"); - return -ENOENT; - } - if (subwin) { - paace = pamu_get_spaace(paace, subwin - 1); - if (!paace) - return -ENOENT; - set_bf(paace->addr_bitfields, PAACE_AF_V, PAACE_V_INVALID); - } else { - set_bf(paace->addr_bitfields, PAACE_AF_AP, - PAACE_AP_PERMS_DENIED); - } - - mb(); - - return 0; -} - /** * pamu_config_paace() - Sets up PPAACE entry for specified liodn * @@ -314,17 +186,15 @@ int pamu_disable_spaace(int liodn, u32 subwin) * stashid not defined * @snoopid: snoop id for hardware coherency -- if ~snoopid == 0 then * snoopid not defined - * @subwin_cnt: number of sub-windows * @prot: window permissions * * Returns 0 upon success else error code < 0 returned */ int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, u32 omi, unsigned long rpn, u32 snoopid, u32 stashid, - u32 subwin_cnt, int prot) + int prot) { struct paace *ppaace; - unsigned long fspi; if ((win_size & (win_size - 1)) || win_size < PAMU_PAGE_SIZE) { pr_debug("window size too small or not a power of two %pa\n", @@ -368,116 +238,12 @@ int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, if (~snoopid != 0) ppaace->domain_attr.to_host.snpid = snoopid; - if (subwin_cnt) { - /* The first entry is in the primary PAACE instead */ - fspi = pamu_get_fspi_and_allocate(subwin_cnt - 1); - if (fspi == ULONG_MAX) { - pr_debug("spaace indexes exhausted\n"); - return -EINVAL; - } - - /* window count is 2^(WCE+1) bytes */ - set_bf(ppaace->impl_attr, PAACE_IA_WCE, - map_subwindow_cnt_to_wce(subwin_cnt)); - set_bf(ppaace->addr_bitfields, PPAACE_AF_MW, 0x1); - ppaace->fspi = fspi; - } else { - set_bf(ppaace->impl_attr, PAACE_IA_ATM, PAACE_ATM_WINDOW_XLATE); - ppaace->twbah = rpn >> 20; - set_bf(ppaace->win_bitfields, PAACE_WIN_TWBAL, rpn); - set_bf(ppaace->addr_bitfields, PAACE_AF_AP, prot); - set_bf(ppaace->impl_attr, PAACE_IA_WCE, 0); - set_bf(ppaace->addr_bitfields, PPAACE_AF_MW, 0); - } - mb(); - - return 0; -} - -/** - * pamu_config_spaace() - Sets up SPAACE entry for specified subwindow - * - * @liodn: Logical IO device number - * @subwin_cnt: number of sub-windows associated with dma-window - * @subwin: subwindow index - * @subwin_size: size of subwindow - * @omi: Operation mapping index - * @rpn: real (true physical) page number - * @snoopid: snoop id for hardware coherency -- if ~snoopid == 0 then - * snoopid not defined - * @stashid: cache stash id for associated cpu - * @enable: enable/disable subwindow after reconfiguration - * @prot: sub window permissions - * - * Returns 0 upon success else error code < 0 returned - */ -int pamu_config_spaace(int liodn, u32 subwin_cnt, u32 subwin, - phys_addr_t subwin_size, u32 omi, unsigned long rpn, - u32 snoopid, u32 stashid, int enable, int prot) -{ - struct paace *paace; - - /* setup sub-windows */ - if (!subwin_cnt) { - pr_debug("Invalid subwindow count\n"); - return -EINVAL; - } - - paace = pamu_get_ppaace(liodn); - if (subwin > 0 && subwin < subwin_cnt && paace) { - paace = pamu_get_spaace(paace, subwin - 1); - - if (paace && !(paace->addr_bitfields & PAACE_V_VALID)) { - pamu_init_spaace(paace); - set_bf(paace->addr_bitfields, SPAACE_AF_LIODN, liodn); - } - } - - if (!paace) { - pr_debug("Invalid liodn entry\n"); - return -ENOENT; - } - - if ((subwin_size & (subwin_size - 1)) || subwin_size < PAMU_PAGE_SIZE) { - pr_debug("subwindow size out of range, or not a power of 2\n"); - return -EINVAL; - } - - if (rpn == ULONG_MAX) { - pr_debug("real page number out of range\n"); - return -EINVAL; - } - - /* window size is 2^(WSE+1) bytes */ - set_bf(paace->win_bitfields, PAACE_WIN_SWSE, - map_addrspace_size_to_wse(subwin_size)); - - set_bf(paace->impl_attr, PAACE_IA_ATM, PAACE_ATM_WINDOW_XLATE); - paace->twbah = rpn >> 20; - set_bf(paace->win_bitfields, PAACE_WIN_TWBAL, rpn); - set_bf(paace->addr_bitfields, PAACE_AF_AP, prot); - - /* configure snoop id */ - if (~snoopid != 0) - paace->domain_attr.to_host.snpid = snoopid; - - /* set up operation mapping if it's configured */ - if (omi < OME_NUMBER_ENTRIES) { - set_bf(paace->impl_attr, PAACE_IA_OTM, PAACE_OTM_INDEXED); - paace->op_encode.index_ot.omi = omi; - } else if (~omi != 0) { - pr_debug("bad operation mapping index: %d\n", omi); - return -EINVAL; - } - - if (~stashid != 0) - set_bf(paace->impl_attr, PAACE_IA_CID, stashid); - - smp_wmb(); - - if (enable) - set_bf(paace->addr_bitfields, PAACE_AF_V, PAACE_V_VALID); - + set_bf(ppaace->impl_attr, PAACE_IA_ATM, PAACE_ATM_WINDOW_XLATE); + ppaace->twbah = rpn >> 20; + set_bf(ppaace->win_bitfields, PAACE_WIN_TWBAL, rpn); + set_bf(ppaace->addr_bitfields, PAACE_AF_AP, prot); + set_bf(ppaace->impl_attr, PAACE_IA_WCE, 0); + set_bf(ppaace->addr_bitfields, PPAACE_AF_MW, 0); mb(); return 0; @@ -1129,17 +895,6 @@ static int fsl_pamu_probe(struct platform_device *pdev) spaact_phys = virt_to_phys(spaact); omt_phys = virt_to_phys(omt); - spaace_pool = gen_pool_create(ilog2(sizeof(struct paace)), -1); - if (!spaace_pool) { - ret = -ENOMEM; - dev_err(dev, "Failed to allocate spaace gen pool\n"); - goto error; - } - - ret = gen_pool_add(spaace_pool, (unsigned long)spaact, SPAACT_SIZE, -1); - if (ret) - goto error_genpool; - pamubypenr = in_be32(&guts_regs->pamubypenr); for (pamu_reg_off = 0, pamu_counter = 0x80000000; pamu_reg_off < size; @@ -1167,9 +922,6 @@ static int fsl_pamu_probe(struct platform_device *pdev) return 0; -error_genpool: - gen_pool_destroy(spaace_pool); - error: if (irq != NO_IRQ) free_irq(irq, data); diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h index e1496ba96160fd..04fd843d718dd1 100644 --- a/drivers/iommu/fsl_pamu.h +++ b/drivers/iommu/fsl_pamu.h @@ -383,18 +383,12 @@ struct ome { int pamu_domain_init(void); int pamu_enable_liodn(int liodn); int pamu_disable_liodn(int liodn); -void pamu_free_subwins(int liodn); int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, u32 omi, unsigned long rpn, u32 snoopid, uint32_t stashid, - u32 subwin_cnt, int prot); -int pamu_config_spaace(int liodn, u32 subwin_cnt, u32 subwin_addr, - phys_addr_t subwin_size, u32 omi, unsigned long rpn, - uint32_t snoopid, u32 stashid, int enable, int prot); + int prot); u32 get_stash_id(u32 stash_dest_hint, u32 vcpu); void get_ome_index(u32 *omi_index, struct device *dev); -int pamu_update_paace_stash(int liodn, u32 subwin, u32 value); -int pamu_disable_spaace(int liodn, u32 subwin); -u32 pamu_get_max_subwin_cnt(void); +int pamu_update_paace_stash(int liodn, u32 value); #endif /* __FSL_PAMU_H */ diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index a4da5597755d3d..e6bdd38fc18409 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -56,65 +56,19 @@ static int __init iommu_init_mempool(void) static phys_addr_t get_phys_addr(struct fsl_dma_domain *dma_domain, dma_addr_t iova) { - u32 win_cnt = dma_domain->win_cnt; struct dma_window *win_ptr = &dma_domain->win_arr[0]; struct iommu_domain_geometry *geom; geom = &dma_domain->iommu_domain.geometry; - if (!win_cnt) { - pr_debug("Number of windows/geometry not configured for the domain\n"); - return 0; - } - - if (win_cnt > 1) { - u64 subwin_size; - dma_addr_t subwin_iova; - u32 wnd; - - subwin_size = (geom->aperture_end + 1) >> ilog2(win_cnt); - subwin_iova = iova & ~(subwin_size - 1); - wnd = (subwin_iova - geom->aperture_start) >> ilog2(subwin_size); - win_ptr = &dma_domain->win_arr[wnd]; - } - if (win_ptr->valid) return win_ptr->paddr + (iova & (win_ptr->size - 1)); return 0; } -static int map_subwins(int liodn, struct fsl_dma_domain *dma_domain) -{ - struct dma_window *sub_win_ptr = &dma_domain->win_arr[0]; - int i, ret; - unsigned long rpn, flags; - - for (i = 0; i < dma_domain->win_cnt; i++) { - if (sub_win_ptr[i].valid) { - rpn = sub_win_ptr[i].paddr >> PAMU_PAGE_SHIFT; - spin_lock_irqsave(&iommu_lock, flags); - ret = pamu_config_spaace(liodn, dma_domain->win_cnt, i, - sub_win_ptr[i].size, - ~(u32)0, - rpn, - dma_domain->snoop_id, - dma_domain->stash_id, - (i > 0) ? 1 : 0, - sub_win_ptr[i].prot); - spin_unlock_irqrestore(&iommu_lock, flags); - if (ret) { - pr_debug("SPAACE configuration failed for liodn %d\n", - liodn); - return ret; - } - } - } - - return ret; -} - -static int map_win(int liodn, struct fsl_dma_domain *dma_domain) +/* Map the DMA window corresponding to the LIODN */ +static int map_liodn(int liodn, struct fsl_dma_domain *dma_domain) { int ret; struct dma_window *wnd = &dma_domain->win_arr[0]; @@ -127,7 +81,7 @@ static int map_win(int liodn, struct fsl_dma_domain *dma_domain) ~(u32)0, wnd->paddr >> PAMU_PAGE_SHIFT, dma_domain->snoop_id, dma_domain->stash_id, - 0, wnd->prot); + wnd->prot); spin_unlock_irqrestore(&iommu_lock, flags); if (ret) pr_debug("PAACE configuration failed for liodn %d\n", liodn); @@ -135,50 +89,27 @@ static int map_win(int liodn, struct fsl_dma_domain *dma_domain) return ret; } -/* Map the DMA window corresponding to the LIODN */ -static int map_liodn(int liodn, struct fsl_dma_domain *dma_domain) -{ - if (dma_domain->win_cnt > 1) - return map_subwins(liodn, dma_domain); - else - return map_win(liodn, dma_domain); -} - /* Update window/subwindow mapping for the LIODN */ static int update_liodn(int liodn, struct fsl_dma_domain *dma_domain, u32 wnd_nr) { int ret; struct dma_window *wnd = &dma_domain->win_arr[wnd_nr]; + phys_addr_t wnd_addr; unsigned long flags; spin_lock_irqsave(&iommu_lock, flags); - if (dma_domain->win_cnt > 1) { - ret = pamu_config_spaace(liodn, dma_domain->win_cnt, wnd_nr, - wnd->size, - ~(u32)0, - wnd->paddr >> PAMU_PAGE_SHIFT, - dma_domain->snoop_id, - dma_domain->stash_id, - (wnd_nr > 0) ? 1 : 0, - wnd->prot); - if (ret) - pr_debug("Subwindow reconfiguration failed for liodn %d\n", - liodn); - } else { - phys_addr_t wnd_addr; - wnd_addr = dma_domain->iommu_domain.geometry.aperture_start; + wnd_addr = dma_domain->iommu_domain.geometry.aperture_start; - ret = pamu_config_ppaace(liodn, wnd_addr, - wnd->size, - ~(u32)0, - wnd->paddr >> PAMU_PAGE_SHIFT, - dma_domain->snoop_id, dma_domain->stash_id, - 0, wnd->prot); - if (ret) - pr_debug("Window reconfiguration failed for liodn %d\n", - liodn); - } + ret = pamu_config_ppaace(liodn, wnd_addr, + wnd->size, + ~(u32)0, + wnd->paddr >> PAMU_PAGE_SHIFT, + dma_domain->snoop_id, dma_domain->stash_id, + wnd->prot); + if (ret) + pr_debug("Window reconfiguration failed for liodn %d\n", + liodn); spin_unlock_irqrestore(&iommu_lock, flags); @@ -192,21 +123,12 @@ static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, unsigned long flags; spin_lock_irqsave(&iommu_lock, flags); - if (!dma_domain->win_arr) { - pr_debug("Windows not configured, stash destination update failed for liodn %d\n", - liodn); + ret = pamu_update_paace_stash(liodn, val); + if (ret) { + pr_debug("Failed to update SPAACE %d field for liodn %d\n ", + i, liodn); spin_unlock_irqrestore(&iommu_lock, flags); - return -EINVAL; - } - - for (i = 0; i < dma_domain->win_cnt; i++) { - ret = pamu_update_paace_stash(liodn, i, val); - if (ret) { - pr_debug("Failed to update SPAACE %d field for liodn %d\n ", - i, liodn); - spin_unlock_irqrestore(&iommu_lock, flags); - return ret; - } + return ret; } spin_unlock_irqrestore(&iommu_lock, flags); @@ -217,14 +139,12 @@ static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, /* Set the geometry parameters for a LIODN */ static int pamu_set_liodn(int liodn, struct device *dev, struct fsl_dma_domain *dma_domain, - struct iommu_domain_geometry *geom_attr, - u32 win_cnt) + struct iommu_domain_geometry *geom_attr) { phys_addr_t window_addr, window_size; - phys_addr_t subwin_size; - int ret = 0, i; u32 omi_index = ~(u32)0; unsigned long flags; + int ret; /* * Configure the omi_index at the geometry setup time. @@ -241,34 +161,14 @@ static int pamu_set_liodn(int liodn, struct device *dev, if (!ret) ret = pamu_config_ppaace(liodn, window_addr, window_size, omi_index, 0, dma_domain->snoop_id, - dma_domain->stash_id, win_cnt, 0); + dma_domain->stash_id, 0); spin_unlock_irqrestore(&iommu_lock, flags); if (ret) { - pr_debug("PAACE configuration failed for liodn %d, win_cnt =%d\n", - liodn, win_cnt); + pr_debug("PAACE configuration failed for liodn %d\n", + liodn); return ret; } - if (win_cnt > 1) { - subwin_size = window_size >> ilog2(win_cnt); - for (i = 0; i < win_cnt; i++) { - spin_lock_irqsave(&iommu_lock, flags); - ret = pamu_disable_spaace(liodn, i); - if (!ret) - ret = pamu_config_spaace(liodn, win_cnt, i, - subwin_size, omi_index, - 0, dma_domain->snoop_id, - dma_domain->stash_id, - 0, 0); - spin_unlock_irqrestore(&iommu_lock, flags); - if (ret) { - pr_debug("SPAACE configuration failed for liodn %d\n", - liodn); - return ret; - } - } - } - return ret; } @@ -292,14 +192,12 @@ static int check_size(u64 size, dma_addr_t iova) return 0; } -static void remove_device_ref(struct device_domain_info *info, u32 win_cnt) +static void remove_device_ref(struct device_domain_info *info) { unsigned long flags; list_del(&info->link); spin_lock_irqsave(&iommu_lock, flags); - if (win_cnt > 1) - pamu_free_subwins(info->liodn); pamu_disable_liodn(info->liodn); spin_unlock_irqrestore(&iommu_lock, flags); spin_lock_irqsave(&device_domain_lock, flags); @@ -317,7 +215,7 @@ static void detach_device(struct device *dev, struct fsl_dma_domain *dma_domain) /* Remove the device from the domain device list */ list_for_each_entry_safe(info, tmp, &dma_domain->devices, link) { if (!dev || (info->dev == dev)) - remove_device_ref(info, dma_domain->win_cnt); + remove_device_ref(info); } spin_unlock_irqrestore(&dma_domain->domain_lock, flags); } @@ -399,7 +297,6 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) dma_domain->stash_id = ~(u32)0; dma_domain->snoop_id = ~(u32)0; - dma_domain->win_cnt = pamu_get_max_subwin_cnt(); INIT_LIST_HEAD(&dma_domain->devices); spin_lock_init(&dma_domain->domain_lock); @@ -411,24 +308,6 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) return &dma_domain->iommu_domain; } -/* Configure geometry settings for all LIODNs associated with domain */ -static int pamu_set_domain_geometry(struct fsl_dma_domain *dma_domain, - struct iommu_domain_geometry *geom_attr, - u32 win_cnt) -{ - struct device_domain_info *info; - int ret = 0; - - list_for_each_entry(info, &dma_domain->devices, link) { - ret = pamu_set_liodn(info->liodn, info->dev, dma_domain, - geom_attr, win_cnt); - if (ret) - break; - } - - return ret; -} - /* Update stash destination for all LIODNs associated with the domain */ static int update_domain_stash(struct fsl_dma_domain *dma_domain, u32 val) { @@ -475,39 +354,30 @@ static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr, pamu_prot |= PAACE_AP_PERMS_UPDATE; spin_lock_irqsave(&dma_domain->domain_lock, flags); - if (!dma_domain->win_arr) { - pr_debug("Number of windows not configured\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -ENODEV; - } - - if (wnd_nr >= dma_domain->win_cnt) { + if (wnd_nr > 0) { pr_debug("Invalid window index\n"); spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return -EINVAL; } - win_size = (domain->geometry.aperture_end + 1) >> - ilog2(dma_domain->win_cnt); + win_size = (domain->geometry.aperture_end + 1) >> ilog2(1); if (size > win_size) { pr_debug("Invalid window size\n"); spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return -EINVAL; } - if (dma_domain->win_cnt == 1) { - if (dma_domain->enabled) { - pr_debug("Disable the window before updating the mapping\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EBUSY; - } + if (dma_domain->enabled) { + pr_debug("Disable the window before updating the mapping\n"); + spin_unlock_irqrestore(&dma_domain->domain_lock, flags); + return -EBUSY; + } - ret = check_size(size, domain->geometry.aperture_start); - if (ret) { - pr_debug("Aperture start not aligned to the size\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } + ret = check_size(size, domain->geometry.aperture_start); + if (ret) { + pr_debug("Aperture start not aligned to the size\n"); + spin_unlock_irqrestore(&dma_domain->domain_lock, flags); + return -EINVAL; } wnd = &dma_domain->win_arr[wnd_nr]; @@ -560,22 +430,18 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain, * for the domain. If yes, set the geometry for * the LIODN. */ - if (dma_domain->win_arr) { - u32 win_cnt = dma_domain->win_cnt > 1 ? dma_domain->win_cnt : 0; - - ret = pamu_set_liodn(liodn[i], dev, dma_domain, - &domain->geometry, win_cnt); + ret = pamu_set_liodn(liodn[i], dev, dma_domain, + &domain->geometry); + if (ret) + break; + if (dma_domain->mapped) { + /* + * Create window/subwindow mapping for + * the LIODN. + */ + ret = map_liodn(liodn[i], dma_domain); if (ret) break; - if (dma_domain->mapped) { - /* - * Create window/subwindow mapping for - * the LIODN. - */ - ret = map_liodn(liodn[i], dma_domain); - if (ret) - break; - } } } spin_unlock_irqrestore(&dma_domain->domain_lock, flags); @@ -706,48 +572,6 @@ static int configure_domain_dma_state(struct fsl_dma_domain *dma_domain, bool en return 0; } -static int fsl_pamu_set_windows(struct iommu_domain *domain, u32 w_count) -{ - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - unsigned long flags; - int ret; - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - /* Ensure domain is inactive i.e. DMA should be disabled for the domain */ - if (dma_domain->enabled) { - pr_debug("Can't set geometry attributes as domain is active\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EBUSY; - } - - /* - * Ensure we have valid window count i.e. it should be less than - * maximum permissible limit and should be a power of two. - */ - if (w_count > pamu_get_max_subwin_cnt() || !is_power_of_2(w_count)) { - pr_debug("Invalid window count\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } - - ret = pamu_set_domain_geometry(dma_domain, &domain->geometry, - w_count > 1 ? w_count : 0); - if (!ret) { - kfree(dma_domain->win_arr); - dma_domain->win_arr = kcalloc(w_count, - sizeof(*dma_domain->win_arr), - GFP_ATOMIC); - if (!dma_domain->win_arr) { - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -ENOMEM; - } - dma_domain->win_cnt = w_count; - } - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - - return ret; -} - static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, enum iommu_attr attr_type, void *data) { @@ -761,9 +585,6 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, case DOMAIN_ATTR_FSL_PAMU_ENABLE: ret = configure_domain_dma_state(dma_domain, *(int *)data); break; - case DOMAIN_ATTR_WINDOWS: - ret = fsl_pamu_set_windows(domain, *(u32 *)data); - break; default: pr_debug("Unsupported attribute type\n"); ret = -EINVAL; diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index 53d359d66fe577..b9236fb5a8f82e 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -17,23 +17,13 @@ struct dma_window { }; struct fsl_dma_domain { - /* - * Number of windows assocaited with this domain. - * During domain initialization, it is set to the - * the maximum number of subwindows allowed for a LIODN. - * Minimum value for this is 1 indicating a single PAMU - * window, without any sub windows. Value can be set/ - * queried by set_attr/get_attr API for DOMAIN_ATTR_WINDOWS. - * Value can only be set once the geometry has been configured. - */ - u32 win_cnt; /* * win_arr contains information of the configured * windows for a domain. This is allocated only * when the number of windows for the domain are * set. */ - struct dma_window *win_arr; + struct dma_window win_arr[1]; /* list of devices associated with the domain */ struct list_head devices; /* dma_domain states: diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index c958e6310d3094..3d56ec4b373b4b 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -55,13 +55,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__); goto no_iommu; } - ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_WINDOWS, - &window_count); - if (ret < 0) { - dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__, - ret); - goto out_domain_free; - } stash_attr.cpu = cpu; stash_attr.cache = PAMU_ATTR_CACHE_L1; ret = iommu_domain_set_attr(pcfg->iommu_domain, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 52874ae164dd60..861c3558c878bf 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -109,7 +109,6 @@ enum iommu_cap { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_PAGING, - DOMAIN_ATTR_WINDOWS, DOMAIN_ATTR_FSL_PAMU_STASH, DOMAIN_ATTR_FSL_PAMU_ENABLE, DOMAIN_ATTR_NESTING, /* two stages of translation */ From patchwork Tue Mar 16 15:38:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142651 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 3D44AC433E0 for ; Tue, 16 Mar 2021 15:56:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 17712650F6 for ; Tue, 16 Mar 2021 15:56:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238215AbhCPP4C (ORCPT ); Tue, 16 Mar 2021 11:56:02 -0400 Received: from casper.infradead.org ([90.155.50.34]:39862 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233271AbhCPPzz (ORCPT ); Tue, 16 Mar 2021 11:55:55 -0400 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=957ifaxCUPBXRHL95Y2DsWA8zHxN+cfQUuzBDRSwUs8=; b=vlx3YaNny8yx4c3wH21WC4JL4i C3nQ5dl2s/UyXek/+3dqbj2Z39l+J1Ha2yGiJJSFFN9zyB4U8KEdiN/ODMRY0paQiAnGHds9nbgBC UJq95DrShhXTxH1THBoF9hM+ovpnVla8ATlclDfptvcHm7SVZGmwy+tyuMmGeW+cwN1HNJAyqXvwa 92l3kNvM+X6CAsYCcTT5LVHIAxuKM2oMnBKnxFOb2Ql3cvN7mChNhLt9gzqa/5n4EHbWnsWGWJRf1 UaJVD/DNByNcBS2myQPshpAmjwMoL/7OPcTdo+wKYOsVgJAHbhf9Oi5+xmgeDNzABsKLFb13vXpAt GqeKUJhg==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMC2C-000Gdf-9c; Tue, 16 Mar 2021 15:55:06 +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 06/18] iommu/fsl_pamu: remove ->domain_window_enable Date: Tue, 16 Mar 2021 16:38:12 +0100 Message-Id: <20210316153825.135976-7-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The only thing that fsl_pamu_window_enable does for the current caller is to fill in the prot value in the only dma_window structure, and to propagate a few values from the iommu_domain_geometry struture into the dma_window. Remove the dma_window entirely, hardcode the prot value and otherwise use the iommu_domain_geometry structure instead. Remove the now unused ->domain_window_enable iommu method. Signed-off-by: Christoph Hellwig Acked-by: Li Yang --- drivers/iommu/fsl_pamu_domain.c | 182 +++------------------------- drivers/iommu/fsl_pamu_domain.h | 17 --- drivers/iommu/iommu.c | 11 -- drivers/soc/fsl/qbman/qman_portal.c | 7 -- include/linux/iommu.h | 17 --- 5 files changed, 14 insertions(+), 220 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index e6bdd38fc18409..fd2bc88b690465 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -54,34 +54,18 @@ static int __init iommu_init_mempool(void) return 0; } -static phys_addr_t get_phys_addr(struct fsl_dma_domain *dma_domain, dma_addr_t iova) -{ - struct dma_window *win_ptr = &dma_domain->win_arr[0]; - struct iommu_domain_geometry *geom; - - geom = &dma_domain->iommu_domain.geometry; - - if (win_ptr->valid) - return win_ptr->paddr + (iova & (win_ptr->size - 1)); - - return 0; -} - /* Map the DMA window corresponding to the LIODN */ static int map_liodn(int liodn, struct fsl_dma_domain *dma_domain) { int ret; - struct dma_window *wnd = &dma_domain->win_arr[0]; - phys_addr_t wnd_addr = dma_domain->iommu_domain.geometry.aperture_start; + struct iommu_domain_geometry *geom = &dma_domain->iommu_domain.geometry; unsigned long flags; spin_lock_irqsave(&iommu_lock, flags); - ret = pamu_config_ppaace(liodn, wnd_addr, - wnd->size, - ~(u32)0, - wnd->paddr >> PAMU_PAGE_SHIFT, - dma_domain->snoop_id, dma_domain->stash_id, - wnd->prot); + ret = pamu_config_ppaace(liodn, geom->aperture_start, + geom->aperture_end - 1, ~(u32)0, + 0, dma_domain->snoop_id, dma_domain->stash_id, + PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); spin_unlock_irqrestore(&iommu_lock, flags); if (ret) pr_debug("PAACE configuration failed for liodn %d\n", liodn); @@ -89,33 +73,6 @@ static int map_liodn(int liodn, struct fsl_dma_domain *dma_domain) return ret; } -/* Update window/subwindow mapping for the LIODN */ -static int update_liodn(int liodn, struct fsl_dma_domain *dma_domain, u32 wnd_nr) -{ - int ret; - struct dma_window *wnd = &dma_domain->win_arr[wnd_nr]; - phys_addr_t wnd_addr; - unsigned long flags; - - spin_lock_irqsave(&iommu_lock, flags); - - wnd_addr = dma_domain->iommu_domain.geometry.aperture_start; - - ret = pamu_config_ppaace(liodn, wnd_addr, - wnd->size, - ~(u32)0, - wnd->paddr >> PAMU_PAGE_SHIFT, - dma_domain->snoop_id, dma_domain->stash_id, - wnd->prot); - if (ret) - pr_debug("Window reconfiguration failed for liodn %d\n", - liodn); - - spin_unlock_irqrestore(&iommu_lock, flags); - - return ret; -} - static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, u32 val) { @@ -172,26 +129,6 @@ static int pamu_set_liodn(int liodn, struct device *dev, return ret; } -static int check_size(u64 size, dma_addr_t iova) -{ - /* - * Size must be a power of two and at least be equal - * to PAMU page size. - */ - if ((size & (size - 1)) || size < PAMU_PAGE_SIZE) { - pr_debug("Size too small or not a power of two\n"); - return -EINVAL; - } - - /* iova must be page size aligned */ - if (iova & (size - 1)) { - pr_debug("Address is not aligned with window size\n"); - return -EINVAL; - } - - return 0; -} - static void remove_device_ref(struct device_domain_info *info) { unsigned long flags; @@ -257,13 +194,10 @@ static void attach_device(struct fsl_dma_domain *dma_domain, int liodn, struct d static phys_addr_t fsl_pamu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - if (iova < domain->geometry.aperture_start || iova > domain->geometry.aperture_end) return 0; - - return get_phys_addr(dma_domain, iova); + return iova; } static bool fsl_pamu_capable(enum iommu_cap cap) @@ -279,7 +213,6 @@ static void fsl_pamu_domain_free(struct iommu_domain *domain) detach_device(NULL, dma_domain); dma_domain->enabled = 0; - dma_domain->mapped = 0; kmem_cache_free(fsl_pamu_domain_cache, dma_domain); } @@ -323,84 +256,6 @@ static int update_domain_stash(struct fsl_dma_domain *dma_domain, u32 val) return ret; } -/* Update domain mappings for all LIODNs associated with the domain */ -static int update_domain_mapping(struct fsl_dma_domain *dma_domain, u32 wnd_nr) -{ - struct device_domain_info *info; - int ret = 0; - - list_for_each_entry(info, &dma_domain->devices, link) { - ret = update_liodn(info->liodn, dma_domain, wnd_nr); - if (ret) - break; - } - return ret; -} - - -static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr, - phys_addr_t paddr, u64 size, int prot) -{ - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - struct dma_window *wnd; - int pamu_prot = 0; - int ret; - unsigned long flags; - u64 win_size; - - if (prot & IOMMU_READ) - pamu_prot |= PAACE_AP_PERMS_QUERY; - if (prot & IOMMU_WRITE) - pamu_prot |= PAACE_AP_PERMS_UPDATE; - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - if (wnd_nr > 0) { - pr_debug("Invalid window index\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } - - win_size = (domain->geometry.aperture_end + 1) >> ilog2(1); - if (size > win_size) { - pr_debug("Invalid window size\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } - - if (dma_domain->enabled) { - pr_debug("Disable the window before updating the mapping\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EBUSY; - } - - ret = check_size(size, domain->geometry.aperture_start); - if (ret) { - pr_debug("Aperture start not aligned to the size\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -EINVAL; - } - - wnd = &dma_domain->win_arr[wnd_nr]; - if (!wnd->valid) { - wnd->paddr = paddr; - wnd->size = size; - wnd->prot = pamu_prot; - - ret = update_domain_mapping(dma_domain, wnd_nr); - if (!ret) { - wnd->valid = 1; - dma_domain->mapped++; - } - } else { - pr_debug("Disable the window before updating the mapping\n"); - ret = -EBUSY; - } - - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - - return ret; -} - /* * Attach the LIODN to the DMA domain and configure the geometry * and window mappings. @@ -434,15 +289,14 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain, &domain->geometry); if (ret) break; - if (dma_domain->mapped) { - /* - * Create window/subwindow mapping for - * the LIODN. - */ - ret = map_liodn(liodn[i], dma_domain); - if (ret) - break; - } + + /* + * Create window/subwindow mapping for + * the LIODN. + */ + ret = map_liodn(liodn[i], dma_domain); + if (ret) + break; } spin_unlock_irqrestore(&dma_domain->domain_lock, flags); @@ -552,13 +406,6 @@ static int configure_domain_dma_state(struct fsl_dma_domain *dma_domain, bool en int ret; spin_lock_irqsave(&dma_domain->domain_lock, flags); - - if (enable && !dma_domain->mapped) { - pr_debug("Can't enable DMA domain without valid mapping\n"); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - return -ENODEV; - } - dma_domain->enabled = enable; list_for_each_entry(info, &dma_domain->devices, link) { ret = (enable) ? pamu_enable_liodn(info->liodn) : @@ -717,7 +564,6 @@ static const struct iommu_ops fsl_pamu_ops = { .domain_free = fsl_pamu_domain_free, .attach_dev = fsl_pamu_attach_device, .detach_dev = fsl_pamu_detach_device, - .domain_window_enable = fsl_pamu_window_enable, .iova_to_phys = fsl_pamu_iova_to_phys, .domain_set_attr = fsl_pamu_set_domain_attr, .probe_device = fsl_pamu_probe_device, diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index b9236fb5a8f82e..13ee06e0ef0136 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -9,26 +9,10 @@ #include "fsl_pamu.h" -struct dma_window { - phys_addr_t paddr; - u64 size; - int valid; - int prot; -}; - struct fsl_dma_domain { - /* - * win_arr contains information of the configured - * windows for a domain. This is allocated only - * when the number of windows for the domain are - * set. - */ - struct dma_window win_arr[1]; /* list of devices associated with the domain */ struct list_head devices; /* dma_domain states: - * mapped - A particular mapping has been created - * within the configured geometry. * enabled - DMA has been enabled for the given * domain. This translates to setting of the * valid bit for the primary PAACE in the PAMU @@ -37,7 +21,6 @@ struct fsl_dma_domain { * enabled for it. * */ - int mapped; int enabled; /* stash_id obtained from the stash attribute details */ u32 stash_id; diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index d0b0a15dba8413..b212bf0261820b 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2610,17 +2610,6 @@ size_t iommu_map_sg_atomic(struct iommu_domain *domain, unsigned long iova, return __iommu_map_sg(domain, iova, sg, nents, prot, GFP_ATOMIC); } -int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, - phys_addr_t paddr, u64 size, int prot) -{ - if (unlikely(domain->ops->domain_window_enable == NULL)) - return -ENODEV; - - return domain->ops->domain_window_enable(domain, wnd_nr, paddr, size, - prot); -} -EXPORT_SYMBOL_GPL(iommu_domain_window_enable); - /** * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework * @domain: the iommu domain where the fault has happened diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 3d56ec4b373b4b..9ee1663f422cbf 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -65,13 +65,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) __func__, ret); goto out_domain_free; } - ret = iommu_domain_window_enable(pcfg->iommu_domain, 0, 0, 1ULL << 36, - IOMMU_READ | IOMMU_WRITE); - if (ret < 0) { - dev_err(dev, "%s(): iommu_domain_window_enable() = %d", - __func__, ret); - goto out_domain_free; - } ret = iommu_attach_device(pcfg->iommu_domain, dev); if (ret < 0) { dev_err(dev, "%s(): iommu_device_attach() = %d", __func__, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 861c3558c878bf..f7baa81887a8bc 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -203,7 +203,6 @@ struct iommu_iotlb_gather { * @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 - * @domain_window_enable: Configure and enable a particular window for a domain * @of_xlate: add OF master IDs to iommu grouping * @is_attach_deferred: Check if domain attach should be deferred from iommu * driver init to device driver init (default no) @@ -261,10 +260,6 @@ struct iommu_ops { struct iommu_domain *domain, struct iommu_resv_region *region); - /* Window handling functions */ - int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, - phys_addr_t paddr, u64 size, int prot); - int (*of_xlate)(struct device *dev, struct of_phandle_args *args); bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev); @@ -505,11 +500,6 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); -/* Window handling function prototypes */ -extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, - phys_addr_t offset, u64 size, - int prot); - extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); @@ -735,13 +725,6 @@ static inline void iommu_iotlb_sync(struct iommu_domain *domain, { } -static inline int iommu_domain_window_enable(struct iommu_domain *domain, - u32 wnd_nr, phys_addr_t paddr, - u64 size, int prot) -{ - return -ENODEV; -} - static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { return 0; From patchwork Tue Mar 16 15:38:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142729 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 E23C0C433DB for ; Tue, 16 Mar 2021 15:59:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AECA465105 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMC4Z-000Gov-Oc; Tue, 16 Mar 2021 15:57:33 +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 07/18] iommu/fsl_pamu: replace DOMAIN_ATTR_FSL_PAMU_STASH with a direct call Date: Tue, 16 Mar 2021 16:38:13 +0100 Message-Id: <20210316153825.135976-8-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add a fsl_pamu_configure_l1_stash API that qman_portal can call directly instead of indirecting through the iommu attr API. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- arch/powerpc/include/asm/fsl_pamu_stash.h | 12 +++--------- drivers/iommu/fsl_pamu_domain.c | 16 +++------------- drivers/iommu/fsl_pamu_domain.h | 2 -- drivers/soc/fsl/qbman/qman_portal.c | 18 +++--------------- include/linux/iommu.h | 1 - 5 files changed, 9 insertions(+), 40 deletions(-) diff --git a/arch/powerpc/include/asm/fsl_pamu_stash.h b/arch/powerpc/include/asm/fsl_pamu_stash.h index 30a31ad2123d86..c0fbadb70b5dad 100644 --- a/arch/powerpc/include/asm/fsl_pamu_stash.h +++ b/arch/powerpc/include/asm/fsl_pamu_stash.h @@ -7,6 +7,8 @@ #ifndef __FSL_PAMU_STASH_H #define __FSL_PAMU_STASH_H +struct iommu_domain; + /* cache stash targets */ enum pamu_stash_target { PAMU_ATTR_CACHE_L1 = 1, @@ -14,14 +16,6 @@ enum pamu_stash_target { PAMU_ATTR_CACHE_L3, }; -/* - * This attribute allows configuring stashig specific parameters - * in the PAMU hardware. - */ - -struct pamu_stash_attribute { - u32 cpu; /* cpu number */ - u32 cache; /* cache to stash to: L1,L2,L3 */ -}; +int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu); #endif /* __FSL_PAMU_STASH_H */ diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index fd2bc88b690465..40eff4b7bc5d42 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -372,27 +372,20 @@ static void fsl_pamu_detach_device(struct iommu_domain *domain, } /* Set the domain stash attribute */ -static int configure_domain_stash(struct fsl_dma_domain *dma_domain, void *data) +int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu) { - struct pamu_stash_attribute *stash_attr = data; + struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); unsigned long flags; int ret; spin_lock_irqsave(&dma_domain->domain_lock, flags); - - memcpy(&dma_domain->dma_stash, stash_attr, - sizeof(struct pamu_stash_attribute)); - - dma_domain->stash_id = get_stash_id(stash_attr->cache, - stash_attr->cpu); + dma_domain->stash_id = get_stash_id(PAMU_ATTR_CACHE_L1, cpu); if (dma_domain->stash_id == ~(u32)0) { pr_debug("Invalid stash attributes\n"); spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return -EINVAL; } - ret = update_domain_stash(dma_domain, dma_domain->stash_id); - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return ret; @@ -426,9 +419,6 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, int ret = 0; switch (attr_type) { - case DOMAIN_ATTR_FSL_PAMU_STASH: - ret = configure_domain_stash(dma_domain, data); - break; case DOMAIN_ATTR_FSL_PAMU_ENABLE: ret = configure_domain_dma_state(dma_domain, *(int *)data); break; diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index 13ee06e0ef0136..cd488004acd1b3 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -22,9 +22,7 @@ struct fsl_dma_domain { * */ int enabled; - /* stash_id obtained from the stash attribute details */ u32 stash_id; - struct pamu_stash_attribute dma_stash; u32 snoop_id; struct iommu_domain iommu_domain; spinlock_t domain_lock; diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 9ee1663f422cbf..798b3a1ffd0b9c 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -47,7 +47,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) #ifdef CONFIG_FSL_PAMU struct device *dev = pcfg->dev; int window_count = 1; - struct pamu_stash_attribute stash_attr; int ret; pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type); @@ -55,13 +54,9 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__); goto no_iommu; } - stash_attr.cpu = cpu; - stash_attr.cache = PAMU_ATTR_CACHE_L1; - ret = iommu_domain_set_attr(pcfg->iommu_domain, - DOMAIN_ATTR_FSL_PAMU_STASH, - &stash_attr); + ret = fsl_pamu_configure_l1_stash(pcfg->iommu_domain, cpu); if (ret < 0) { - dev_err(dev, "%s(): iommu_domain_set_attr() = %d", + dev_err(dev, "%s(): fsl_pamu_configure_l1_stash() = %d", __func__, ret); goto out_domain_free; } @@ -143,15 +138,8 @@ static void qman_portal_update_sdest(const struct qm_portal_config *pcfg, unsigned int cpu) { #ifdef CONFIG_FSL_PAMU /* TODO */ - struct pamu_stash_attribute stash_attr; - int ret; - if (pcfg->iommu_domain) { - stash_attr.cpu = cpu; - stash_attr.cache = PAMU_ATTR_CACHE_L1; - ret = iommu_domain_set_attr(pcfg->iommu_domain, - DOMAIN_ATTR_FSL_PAMU_STASH, &stash_attr); - if (ret < 0) { + if (fsl_pamu_configure_l1_stash(pcfg->iommu_domain, cpu) < 0) { dev_err(pcfg->dev, "Failed to update pamu stash setting\n"); return; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f7baa81887a8bc..208e570e8d99e7 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -109,7 +109,6 @@ enum iommu_cap { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_PAGING, - DOMAIN_ATTR_FSL_PAMU_STASH, DOMAIN_ATTR_FSL_PAMU_ENABLE, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, From patchwork Tue Mar 16 15:38:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142755 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 391FCC43381 for ; Tue, 16 Mar 2021 16:03:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 122F465109 for ; Tue, 16 Mar 2021 16:03:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238348AbhCPQCa (ORCPT ); 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Tue, 16 Mar 2021 15:59:54 +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 08/18] iommu/fsl_pamu: merge pamu_set_liodn and map_liodn Date: Tue, 16 Mar 2021 16:38:14 +0100 Message-Id: <20210316153825.135976-9-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Merge the two fuctions that configure the ppaace into a single coherent function. I somehow doubt we need the two pamu_config_ppaace calls, but keep the existing behavior just to be on the safe side. Signed-off-by: Christoph Hellwig Acked-by: Li Yang --- drivers/iommu/fsl_pamu_domain.c | 65 +++++++++------------------------ 1 file changed, 17 insertions(+), 48 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 40eff4b7bc5d42..4a4944332674f7 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -54,25 +54,6 @@ static int __init iommu_init_mempool(void) return 0; } -/* Map the DMA window corresponding to the LIODN */ -static int map_liodn(int liodn, struct fsl_dma_domain *dma_domain) -{ - int ret; - struct iommu_domain_geometry *geom = &dma_domain->iommu_domain.geometry; - unsigned long flags; - - spin_lock_irqsave(&iommu_lock, flags); - ret = pamu_config_ppaace(liodn, geom->aperture_start, - geom->aperture_end - 1, ~(u32)0, - 0, dma_domain->snoop_id, dma_domain->stash_id, - PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); - spin_unlock_irqrestore(&iommu_lock, flags); - if (ret) - pr_debug("PAACE configuration failed for liodn %d\n", liodn); - - return ret; -} - static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, u32 val) { @@ -94,11 +75,11 @@ static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, } /* Set the geometry parameters for a LIODN */ -static int pamu_set_liodn(int liodn, struct device *dev, - struct fsl_dma_domain *dma_domain, - struct iommu_domain_geometry *geom_attr) +static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev, + int liodn) { - phys_addr_t window_addr, window_size; + struct iommu_domain *domain = &dma_domain->iommu_domain; + struct iommu_domain_geometry *geom = &domain->geometry; u32 omi_index = ~(u32)0; unsigned long flags; int ret; @@ -110,22 +91,25 @@ static int pamu_set_liodn(int liodn, struct device *dev, */ get_ome_index(&omi_index, dev); - window_addr = geom_attr->aperture_start; - window_size = geom_attr->aperture_end + 1; - spin_lock_irqsave(&iommu_lock, flags); ret = pamu_disable_liodn(liodn); - if (!ret) - ret = pamu_config_ppaace(liodn, window_addr, window_size, omi_index, - 0, dma_domain->snoop_id, - dma_domain->stash_id, 0); + if (ret) + goto out_unlock; + ret = pamu_config_ppaace(liodn, geom->aperture_start, + geom->aperture_end - 1, omi_index, 0, + dma_domain->snoop_id, dma_domain->stash_id, 0); + if (ret) + goto out_unlock; + ret = pamu_config_ppaace(liodn, geom->aperture_start, + geom->aperture_end - 1, ~(u32)0, + 0, dma_domain->snoop_id, dma_domain->stash_id, + PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); +out_unlock: spin_unlock_irqrestore(&iommu_lock, flags); if (ret) { pr_debug("PAACE configuration failed for liodn %d\n", liodn); - return ret; } - return ret; } @@ -265,7 +249,6 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain, int num) { unsigned long flags; - struct iommu_domain *domain = &dma_domain->iommu_domain; int ret = 0; int i; @@ -280,21 +263,7 @@ static int handle_attach_device(struct fsl_dma_domain *dma_domain, } attach_device(dma_domain, liodn[i], dev); - /* - * Check if geometry has already been configured - * for the domain. If yes, set the geometry for - * the LIODN. - */ - ret = pamu_set_liodn(liodn[i], dev, dma_domain, - &domain->geometry); - if (ret) - break; - - /* - * Create window/subwindow mapping for - * the LIODN. - */ - ret = map_liodn(liodn[i], dma_domain); + ret = pamu_set_liodn(dma_domain, dev, liodn[i]); if (ret) break; } From patchwork Tue Mar 16 15:38:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142757 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 30551C43331 for ; Tue, 16 Mar 2021 16:03:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0065565109 for ; Tue, 16 Mar 2021 16:03:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238370AbhCPQDH (ORCPT ); Tue, 16 Mar 2021 12:03:07 -0400 Received: from casper.infradead.org ([90.155.50.34]:40538 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231992AbhCPQC6 (ORCPT ); Tue, 16 Mar 2021 12:02:58 -0400 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=FprZHhSdge2856Gd5JohVLHbL8L1JTLngMKWflrsS70=; b=UCenjwndqegn0MZYJ+0h2/ZJp+ RMykJIDQnEk5cjLs1Szm8v6aeUAIFaAPjAa/8x78t1iMup3JAcGg5FrrdxxXaRhmr+5MdEkI6xalp 6qwRS0AROF2x9w4GJJ6Nbq4XHBFONyZPXpMcORLK/G1RDRKlEKaT3k4cLClrKCIUjR06C6VBvksqs OQNguLUGQKRnpOZCa3CrNcbcZdaoJ+m1HgMBlgokeX/DGPeOXYmpSQ2PJbqzRgetxh893JfeDSBzV aBGuN/0Zos5DY1VonindEgL+DGp3eSf1Ui5gQqQ1r00vT7xOJ07hzUOMkuDmd4wN2LgQaXlpmAdfe rpBkkzig==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMC97-000HA8-9T; Tue, 16 Mar 2021 16:02:14 +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 09/18] iommu/fsl_pamu: merge handle_attach_device into fsl_pamu_attach_device Date: Tue, 16 Mar 2021 16:38:15 +0100 Message-Id: <20210316153825.135976-10-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org No good reason to split this functionality over two functions. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 59 +++++++++++---------------------- 1 file changed, 20 insertions(+), 39 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 4a4944332674f7..962cdc1a4a1924 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -240,45 +240,13 @@ static int update_domain_stash(struct fsl_dma_domain *dma_domain, u32 val) return ret; } -/* - * Attach the LIODN to the DMA domain and configure the geometry - * and window mappings. - */ -static int handle_attach_device(struct fsl_dma_domain *dma_domain, - struct device *dev, const u32 *liodn, - int num) -{ - unsigned long flags; - int ret = 0; - int i; - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - for (i = 0; i < num; i++) { - /* Ensure that LIODN value is valid */ - if (liodn[i] >= PAACE_NUMBER_ENTRIES) { - pr_debug("Invalid liodn %d, attach device failed for %pOF\n", - liodn[i], dev->of_node); - ret = -EINVAL; - break; - } - - attach_device(dma_domain, liodn[i], dev); - ret = pamu_set_liodn(dma_domain, dev, liodn[i]); - if (ret) - break; - } - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - - return ret; -} - static int fsl_pamu_attach_device(struct iommu_domain *domain, struct device *dev) { struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); + unsigned long flags; + int len, ret = 0, i; const u32 *liodn; - u32 liodn_cnt; - int len, ret = 0; struct pci_dev *pdev = NULL; struct pci_controller *pci_ctl; @@ -298,14 +266,27 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain, } liodn = of_get_property(dev->of_node, "fsl,liodn", &len); - if (liodn) { - liodn_cnt = len / sizeof(u32); - ret = handle_attach_device(dma_domain, dev, liodn, liodn_cnt); - } else { + if (!liodn) { pr_debug("missing fsl,liodn property at %pOF\n", dev->of_node); - ret = -EINVAL; + return -EINVAL; } + spin_lock_irqsave(&dma_domain->domain_lock, flags); + for (i = 0; i < len / sizeof(u32); i++) { + /* Ensure that LIODN value is valid */ + if (liodn[i] >= PAACE_NUMBER_ENTRIES) { + pr_debug("Invalid liodn %d, attach device failed for %pOF\n", + liodn[i], dev->of_node); + ret = -EINVAL; + break; + } + + attach_device(dma_domain, liodn[i], dev); + ret = pamu_set_liodn(dma_domain, dev, liodn[i]); + if (ret) + break; + } + spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return ret; } From patchwork Tue Mar 16 15:38:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142761 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 5090DC43381 for ; Tue, 16 Mar 2021 16:06:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 184B865104 for ; Tue, 16 Mar 2021 16:06:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238467AbhCPQFt (ORCPT ); Tue, 16 Mar 2021 12:05:49 -0400 Received: from casper.infradead.org ([90.155.50.34]:40816 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238441AbhCPQF0 (ORCPT ); Tue, 16 Mar 2021 12:05:26 -0400 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=ChWs1Pv1M4w34bREM9yV5oYIS/hBxPZ6ahPsYOMn6KE=; b=GiqE948WxG9Y25eOFNvp4ScWT8 HKJ5ed+E+Vc2FVohBanksLlMTVTMz2VC/MM13YG8GNew9J7z4hetwf5m4BhZj8uW+hJbaoYqTCPXj zxaSmmgV9pxLd5xun5QeJr3pRnvHimaX+iltsC7oB/T4iUH52kiCH/3y8z57qHk5l45o7NkxJ1aq1 WsI/a4i/7P8dWHzoblAUwkn2zI+U9OaE6pX7KrgFNJLCScFfgn/mf9ZPHxg0qf3sM3qTCHImsYSQ/ F+p7DrESZAwppU4jlZ79hMHP4IFgK2vyz7S9zMWl1ZL0Zwf8VS/jBCLgny3TLqHfdcNyXoQLjTtA3 E2LS+GbQ==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCBJ-000HNL-FY; Tue, 16 Mar 2021 16:04:36 +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 10/18] iommu/fsl_pamu: enable the liodn when attaching a device Date: Tue, 16 Mar 2021 16:38:16 +0100 Message-Id: <20210316153825.135976-11-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Instead of a separate call to enable all devices from the list, just enablde the liodn one the device is attached to the iommu domain. This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 47 ++--------------------------- drivers/iommu/fsl_pamu_domain.h | 10 ------ drivers/soc/fsl/qbman/qman_portal.c | 11 ------- include/linux/iommu.h | 1 - 4 files changed, 3 insertions(+), 66 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 962cdc1a4a1924..21c6d9e79eddf9 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -195,9 +195,6 @@ static void fsl_pamu_domain_free(struct iommu_domain *domain) /* remove all the devices from the device list */ detach_device(NULL, dma_domain); - - dma_domain->enabled = 0; - kmem_cache_free(fsl_pamu_domain_cache, dma_domain); } @@ -285,6 +282,9 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain, ret = pamu_set_liodn(dma_domain, dev, liodn[i]); if (ret) break; + ret = pamu_enable_liodn(liodn[i]); + if (ret) + break; } spin_unlock_irqrestore(&dma_domain->domain_lock, flags); return ret; @@ -341,46 +341,6 @@ int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu) return ret; } -/* Configure domain dma state i.e. enable/disable DMA */ -static int configure_domain_dma_state(struct fsl_dma_domain *dma_domain, bool enable) -{ - struct device_domain_info *info; - unsigned long flags; - int ret; - - spin_lock_irqsave(&dma_domain->domain_lock, flags); - dma_domain->enabled = enable; - list_for_each_entry(info, &dma_domain->devices, link) { - ret = (enable) ? pamu_enable_liodn(info->liodn) : - pamu_disable_liodn(info->liodn); - if (ret) - pr_debug("Unable to set dma state for liodn %d", - info->liodn); - } - spin_unlock_irqrestore(&dma_domain->domain_lock, flags); - - return 0; -} - -static int fsl_pamu_set_domain_attr(struct iommu_domain *domain, - enum iommu_attr attr_type, void *data) -{ - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); - int ret = 0; - - switch (attr_type) { - case DOMAIN_ATTR_FSL_PAMU_ENABLE: - ret = configure_domain_dma_state(dma_domain, *(int *)data); - break; - default: - pr_debug("Unsupported attribute type\n"); - ret = -EINVAL; - break; - } - - return ret; -} - static struct iommu_group *get_device_iommu_group(struct device *dev) { struct iommu_group *group; @@ -505,7 +465,6 @@ static const struct iommu_ops fsl_pamu_ops = { .attach_dev = fsl_pamu_attach_device, .detach_dev = fsl_pamu_detach_device, .iova_to_phys = fsl_pamu_iova_to_phys, - .domain_set_attr = fsl_pamu_set_domain_attr, .probe_device = fsl_pamu_probe_device, .release_device = fsl_pamu_release_device, .device_group = fsl_pamu_device_group, diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index cd488004acd1b3..5f4ed253f61b31 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -12,16 +12,6 @@ struct fsl_dma_domain { /* list of devices associated with the domain */ struct list_head devices; - /* dma_domain states: - * enabled - DMA has been enabled for the given - * domain. This translates to setting of the - * valid bit for the primary PAACE in the PAMU - * PAACT table. Domain geometry should be set and - * it must have a valid mapping before DMA can be - * enabled for it. - * - */ - int enabled; u32 stash_id; u32 snoop_id; struct iommu_domain iommu_domain; diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c index 798b3a1ffd0b9c..bf38eb0042ed52 100644 --- a/drivers/soc/fsl/qbman/qman_portal.c +++ b/drivers/soc/fsl/qbman/qman_portal.c @@ -46,7 +46,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) { #ifdef CONFIG_FSL_PAMU struct device *dev = pcfg->dev; - int window_count = 1; int ret; pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type); @@ -66,14 +65,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) ret); goto out_domain_free; } - ret = iommu_domain_set_attr(pcfg->iommu_domain, - DOMAIN_ATTR_FSL_PAMU_ENABLE, - &window_count); - if (ret < 0) { - dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__, - ret); - goto out_detach_device; - } no_iommu: #endif @@ -82,8 +73,6 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu) return; #ifdef CONFIG_FSL_PAMU -out_detach_device: - iommu_detach_device(pcfg->iommu_domain, NULL); out_domain_free: iommu_domain_free(pcfg->iommu_domain); pcfg->iommu_domain = NULL; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 208e570e8d99e7..840864844027dc 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -109,7 +109,6 @@ enum iommu_cap { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_PAGING, - DOMAIN_ATTR_FSL_PAMU_ENABLE, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, From patchwork Tue Mar 16 15:38:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142777 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 CE0D1C433E9 for ; Tue, 16 Mar 2021 16:08:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9FE4065105 for ; Tue, 16 Mar 2021 16:08:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238477AbhCPQHy (ORCPT ); Tue, 16 Mar 2021 12:07:54 -0400 Received: from casper.infradead.org ([90.155.50.34]:41012 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235231AbhCPQHb (ORCPT ); Tue, 16 Mar 2021 12:07:31 -0400 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=Kkxha7HhDeDeiLHPN4ScEYXEFs72nQTBZ/oJ+6IBdP4=; b=YcmBm1qfg9JKoAiVtfyWQXlwhS M08HkfPaVchyUBSjEexQro2FH2Z+FU5NTrrW/pMvLkYm+sRq54Abv1CkPcTnVi3FUVHXQGvsEeobi MjS/U/o+BkzhCfVgj+Z52tphipVdeNeOip0bnFzhjQAfMHXeqap7G7BWhFnInz56WFp1VsQ0FjCRA pcoTVNisnAHauf77+WfpV2LkrNgfjUARVLRUwcKWwjBRTh3HtuG9A7/iXzfoICTfguD+Z/id6w4Vb 1yFIHw1l0UTzzDUyfwsbZFK6uerDAOLJBHllsPYPPsxuZr2BCAPd292laE1UegygYFK3im4KsBYDt PCu6x2eA==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCDf-000Hc6-Sy; Tue, 16 Mar 2021 16:07:00 +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 11/18] iommu/fsl_pamu: remove the snoop_id field Date: Tue, 16 Mar 2021 16:38:17 +0100 Message-Id: <20210316153825.135976-12-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The snoop_id is always set to ~(u32)0. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/fsl_pamu_domain.c | 5 ++--- drivers/iommu/fsl_pamu_domain.h | 1 - 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 21c6d9e79eddf9..701fc3f187a100 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -97,12 +97,12 @@ static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev, goto out_unlock; ret = pamu_config_ppaace(liodn, geom->aperture_start, geom->aperture_end - 1, omi_index, 0, - dma_domain->snoop_id, dma_domain->stash_id, 0); + ~(u32)0, dma_domain->stash_id, 0); if (ret) goto out_unlock; ret = pamu_config_ppaace(liodn, geom->aperture_start, geom->aperture_end - 1, ~(u32)0, - 0, dma_domain->snoop_id, dma_domain->stash_id, + 0, ~(u32)0, dma_domain->stash_id, PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); out_unlock: spin_unlock_irqrestore(&iommu_lock, flags); @@ -210,7 +210,6 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) return NULL; dma_domain->stash_id = ~(u32)0; - dma_domain->snoop_id = ~(u32)0; INIT_LIST_HEAD(&dma_domain->devices); spin_lock_init(&dma_domain->domain_lock); diff --git a/drivers/iommu/fsl_pamu_domain.h b/drivers/iommu/fsl_pamu_domain.h index 5f4ed253f61b31..95ac1b3cab3b69 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -13,7 +13,6 @@ struct fsl_dma_domain { /* list of devices associated with the domain */ struct list_head devices; u32 stash_id; - u32 snoop_id; struct iommu_domain iommu_domain; spinlock_t domain_lock; }; From patchwork Tue Mar 16 15:38:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142779 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 3302CC433DB for ; Tue, 16 Mar 2021 16:11:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA5186510E for ; Tue, 16 Mar 2021 16:11:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238492AbhCPQKe (ORCPT ); Tue, 16 Mar 2021 12:10:34 -0400 Received: from casper.infradead.org ([90.155.50.34]:41316 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231701AbhCPQKG (ORCPT ); Tue, 16 Mar 2021 12:10:06 -0400 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=Uc+inoe77xDeXckYX3n+V6DmwCQOACdS2a3bOR17+1w=; b=YEZD3YRFaNVvjqaNt0KraCvjqN ucCUN6pUH4GT22GZ2CRDACauBZqaMdq74H/CXf6e11hLrUQmTq3rcYE1lPBHwbUXFZJpZl3u6mgWG OFKiTty0vesPVerD//4atA40MRDpVEHuGp2ZXSUBKbPqPnh9+DGHG5hKGbGjX92lZS2gGoEtRdsVy tprFfygVjS7s5pkLddfXRtv2sfLGkv7vCoKz4jwU8HPtQ3uzAybhRqm/9bkaLfEL7uCAXMMj3OdqI BibBACyen3XP54ye1UrgBcb/GH57IiS5xUZH/RX8dA0mVWYjtdukjSEgKnuWPcVFp6gsIYQGhZ4mM O82ZJhZQ==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCFv-000Hml-4m; Tue, 16 Mar 2021 16:09:20 +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 12/18] iommu: remove DOMAIN_ATTR_PAGING Date: Tue, 16 Mar 2021 16:38:18 +0100 Message-Id: <20210316153825.135976-13-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org DOMAIN_ATTR_PAGING is never used. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/iommu.c | 5 ----- include/linux/iommu.h | 1 - 2 files changed, 6 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index b212bf0261820b..9a4cda390993e6 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2668,7 +2668,6 @@ int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { struct iommu_domain_geometry *geometry; - bool *paging; int ret = 0; switch (attr) { @@ -2676,10 +2675,6 @@ int iommu_domain_get_attr(struct iommu_domain *domain, geometry = data; *geometry = domain->geometry; - break; - case DOMAIN_ATTR_PAGING: - paging = data; - *paging = (domain->pgsize_bitmap != 0UL); break; default: if (!domain->ops->domain_get_attr) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 840864844027dc..180ff4bd7fa7ef 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -108,7 +108,6 @@ enum iommu_cap { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, - DOMAIN_ATTR_PAGING, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, From patchwork Tue Mar 16 15:38:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142791 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 C4D34C4332B for ; Tue, 16 Mar 2021 16:12:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E20065109 for ; Tue, 16 Mar 2021 16:12:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238499AbhCPQMY (ORCPT ); Tue, 16 Mar 2021 12:12:24 -0400 Received: from casper.infradead.org ([90.155.50.34]:41692 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238534AbhCPQMP (ORCPT ); Tue, 16 Mar 2021 12:12:15 -0400 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=kHsRf80hweLFXx2Y8vqSJos+4uW9lRm5vIxtw6UsvMs=; b=SIEddbpnHlyrrcTbha6VnM5ANP 765jLuSEDVATvpW3nQzBo9iAZMRlfjctVKLpGIuBZZ/WxT22BvVZ88DqZIEqeI7qYuA/sdqi3ikYx eoO0xmAg37aZHnzboSseJQfV/oHQKqQ3xKLSi+uJJk66r54ilb8RrGb+6UdSUWKCvWRhMaRwp5RZV 5U5eUchuFjOb9w7ODwAWi3DvzoLKg/F8/2mjQL6N5SaWmV6EGehccsU7nvbmjCgMcNyYgfrZOtIGN kWLiA8Ikltq449FxFC8QxBDvYAo4jQSt/vYqmP+hlAyEqNYSzToufY8hV10sNWU7OsPUPOhLUypS8 UU1IXipA==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCIH-000I1z-Lk; Tue, 16 Mar 2021 16:11:42 +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 13/18] iommu: remove DOMAIN_ATTR_GEOMETRY Date: Tue, 16 Mar 2021 16:38:19 +0100 Message-Id: <20210316153825.135976-14-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The geometry information can be trivially queried from the iommu_domain struture. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/iommu.c | 20 +++----------------- drivers/vfio/vfio_iommu_type1.c | 26 ++++++++++++-------------- drivers/vhost/vdpa.c | 10 +++------- include/linux/iommu.h | 1 - 4 files changed, 18 insertions(+), 39 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 9a4cda390993e6..23daaea7883b75 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2667,23 +2667,9 @@ core_initcall(iommu_init); int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr attr, void *data) { - struct iommu_domain_geometry *geometry; - int ret = 0; - - switch (attr) { - case DOMAIN_ATTR_GEOMETRY: - geometry = data; - *geometry = domain->geometry; - - break; - default: - if (!domain->ops->domain_get_attr) - return -EINVAL; - - ret = domain->ops->domain_get_attr(domain, attr, data); - } - - return ret; + if (!domain->ops->domain_get_attr) + return -EINVAL; + return domain->ops->domain_get_attr(domain, attr, data); } EXPORT_SYMBOL_GPL(iommu_domain_get_attr); diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 4bb162c1d649b3..c8e57f22f421c5 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2252,7 +2252,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, int ret; bool resv_msi, msi_remap; phys_addr_t resv_msi_base = 0; - struct iommu_domain_geometry geo; + struct iommu_domain_geometry *geo; LIST_HEAD(iova_copy); LIST_HEAD(group_resv_regions); @@ -2333,10 +2333,9 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, goto out_domain; /* Get aperture info */ - iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY, &geo); - - if (vfio_iommu_aper_conflict(iommu, geo.aperture_start, - geo.aperture_end)) { + geo = &domain->domain->geometry; + if (vfio_iommu_aper_conflict(iommu, geo->aperture_start, + geo->aperture_end)) { ret = -EINVAL; goto out_detach; } @@ -2359,8 +2358,8 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, if (ret) goto out_detach; - ret = vfio_iommu_aper_resize(&iova_copy, geo.aperture_start, - geo.aperture_end); + ret = vfio_iommu_aper_resize(&iova_copy, geo->aperture_start, + geo->aperture_end); if (ret) goto out_detach; @@ -2493,7 +2492,6 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu, struct list_head *iova_copy) { struct vfio_domain *domain; - struct iommu_domain_geometry geo; struct vfio_iova *node; dma_addr_t start = 0; dma_addr_t end = (dma_addr_t)~0; @@ -2502,12 +2500,12 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu, return; list_for_each_entry(domain, &iommu->domain_list, next) { - iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY, - &geo); - if (geo.aperture_start > start) - start = geo.aperture_start; - if (geo.aperture_end < end) - end = geo.aperture_end; + struct iommu_domain_geometry *geo = &domain->domain->geometry; + + if (geo->aperture_start > start) + start = geo->aperture_start; + if (geo->aperture_end < end) + end = geo->aperture_end; } /* Modify aperture limits. The new aper is either same or bigger */ diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index ef688c8c0e0e6f..25824fab433d0a 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -826,18 +826,14 @@ static void vhost_vdpa_free_domain(struct vhost_vdpa *v) static void vhost_vdpa_set_iova_range(struct vhost_vdpa *v) { struct vdpa_iova_range *range = &v->range; - struct iommu_domain_geometry geo; struct vdpa_device *vdpa = v->vdpa; const struct vdpa_config_ops *ops = vdpa->config; if (ops->get_iova_range) { *range = ops->get_iova_range(vdpa); - } else if (v->domain && - !iommu_domain_get_attr(v->domain, - DOMAIN_ATTR_GEOMETRY, &geo) && - geo.force_aperture) { - range->first = geo.aperture_start; - range->last = geo.aperture_end; + } else if (v->domain && v->domain->geometry.force_aperture) { + range->first = v->domain->geometry.aperture_start; + range->last = v->domain->geometry.aperture_end; } else { range->first = 0; range->last = ULLONG_MAX; diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 180ff4bd7fa7ef..c15a8658daad64 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_NESTING, /* two stages of translation */ DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, From patchwork Tue Mar 16 15:38:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142793 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 3DD46C43381 for ; Tue, 16 Mar 2021 16:15:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0034D650F8 for ; Tue, 16 Mar 2021 16:15:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238533AbhCPQPD (ORCPT ); Tue, 16 Mar 2021 12:15:03 -0400 Received: from casper.infradead.org ([90.155.50.34]:41994 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238517AbhCPQOk (ORCPT ); Tue, 16 Mar 2021 12:14:40 -0400 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=hWgOGEWBNgjWOFYRD+L4rHLGPWPrf1+D7OQXUxeyHwE=; b=XTYc8X/NOkg7j5/J2oc0CRMPSw k85Tffx7zg4OnAYUH+pjptNV+pAnwgzn3jZcQxSH6mGX3+GShXMAfhB9mABF/Z7IyrSNrtQdGv6U6 26/cK2fjbSU8T9jT9ZUekCVkM//2kem+vEl4gzLPqe9vO/7/onZzVKABaRyhaJGPhQaGIHlO/jPeQ 8xNDrEwAOVzxTYGRV1OdlGErR+0f0dRbULgCZ1J2ecOyNO4FYVkCuwTri8XT7gC+mS9lSK8JXzooP IltwJWxxqrqnAOtp3iqaINR82GWKI6eo/WYUXb7za8TYh2TYk58dKF2dURHGhexE9dJs3VlQZoRCo VVkm4RpQ==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCKP-000IBx-LN; Tue, 16 Mar 2021 16:13:54 +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 14/18] iommu: remove DOMAIN_ATTR_NESTING Date: Tue, 16 Mar 2021 16:38:20 +0100 Message-Id: <20210316153825.135976-15-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use an explicit enable_nesting method instead. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 ++++++++------------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 30 +++++++------- drivers/iommu/intel/iommu.c | 31 +++++---------- drivers/iommu/iommu.c | 10 +++++ drivers/vfio/vfio_iommu_type1.c | 5 +-- include/linux/iommu.h | 4 +- 6 files changed, 55 insertions(+), 68 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 8594b4a8304375..f1e38526d5bd40 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2455,15 +2455,6 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_NESTING: - *(int *)data = (smmu_domain->stage == ARM_SMMU_DOMAIN_NESTED); - return 0; - default: - return -ENODEV; - } - break; case IOMMU_DOMAIN_DMA: switch (attr) { case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: @@ -2487,23 +2478,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, mutex_lock(&smmu_domain->init_mutex); 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: switch(attr) { case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: @@ -2517,11 +2491,25 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, ret = -EINVAL; } -out_unlock: mutex_unlock(&smmu_domain->init_mutex); return ret; } +static int arm_smmu_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = 0; + + mutex_lock(&smmu_domain->init_mutex); + if (smmu_domain->smmu) + ret = -EPERM; + else + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} + static int arm_smmu_of_xlate(struct device *dev, struct of_phandle_args *args) { return iommu_fwspec_add_ids(dev, args->args, 1); @@ -2621,6 +2609,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .domain_get_attr = arm_smmu_domain_get_attr, .domain_set_attr = arm_smmu_domain_set_attr, + .enable_nesting = arm_smmu_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 d8c6bfde6a6158..0aa6d667274970 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1489,9 +1489,6 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, switch(domain->type) { case IOMMU_DOMAIN_UNMANAGED: switch (attr) { - case DOMAIN_ATTR_NESTING: - *(int *)data = (smmu_domain->stage == ARM_SMMU_DOMAIN_NESTED); - return 0; case DOMAIN_ATTR_IO_PGTABLE_CFG: { struct io_pgtable_domain_attr *pgtbl_cfg = data; *pgtbl_cfg = smmu_domain->pgtbl_cfg; @@ -1519,6 +1516,21 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, } } +static int arm_smmu_enable_nesting(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = 0; + + mutex_lock(&smmu_domain->init_mutex); + if (smmu_domain->smmu) + ret = -EPERM; + else + smmu_domain->stage = ARM_SMMU_DOMAIN_NESTED; + 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) { @@ -1530,17 +1542,6 @@ 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; @@ -1633,6 +1634,7 @@ static struct iommu_ops arm_smmu_ops = { .device_group = arm_smmu_device_group, .domain_get_attr = arm_smmu_domain_get_attr, .domain_set_attr = arm_smmu_domain_set_attr, + .enable_nesting = arm_smmu_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 ee0932307d646b..070ba76242e819 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5423,32 +5423,19 @@ 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_enable_nesting(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); unsigned long flags; - int ret = 0; - - if (domain->type != IOMMU_DOMAIN_UNMANAGED) - return -EINVAL; + int ret = -ENODEV; - 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; } @@ -5577,7 +5564,7 @@ const struct iommu_ops intel_iommu_ops = { .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, .domain_get_attr = intel_iommu_domain_get_attr, - .domain_set_attr = intel_iommu_domain_set_attr, + .enable_nesting = intel_iommu_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 23daaea7883b75..58d1d11a8d5c10 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2690,6 +2690,16 @@ int iommu_domain_set_attr(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_domain_set_attr); +int iommu_enable_nesting(struct iommu_domain *domain) +{ + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + if (!domain->ops->enable_nesting) + return -EINVAL; + return domain->ops->enable_nesting(domain); +} +EXPORT_SYMBOL_GPL(iommu_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..1201482e6eec6f 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_enable_nesting(domain->domain); if (ret) goto out_domain; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index c15a8658daad64..670e7a3523f286 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_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, @@ -196,6 +195,7 @@ struct iommu_iotlb_gather { * @device_group: find iommu group for a particular device * @domain_get_attr: Query domain attributes * @domain_set_attr: Change domain attributes + * @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 { enum iommu_attr attr, void *data); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + int (*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); @@ -495,6 +496,7 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, void *data); extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +int iommu_enable_nesting(struct iommu_domain *domain); extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); From patchwork Tue Mar 16 15:38:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142869 X-Patchwork-Delegate: kuba@kernel.org 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=-13.9 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,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,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 12EB4C43381 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCMY-000IT2-QA; Tue, 16 Mar 2021 16:16:09 +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 15/18] iommu: remove iommu_set_cmd_line_dma_api and iommu_cmd_line_dma_api Date: Tue, 16 Mar 2021 16:38:21 +0100 Message-Id: <20210316153825.135976-16-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Don't obsfucate the trivial bit flag check. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon --- drivers/iommu/iommu.c | 23 +++++------------------ 1 file changed, 5 insertions(+), 18 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 58d1d11a8d5c10..052cef11ae30df 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -70,16 +70,6 @@ static const char * const iommu_group_resv_type_string[] = { #define IOMMU_CMD_LINE_DMA_API BIT(0) -static void iommu_set_cmd_line_dma_api(void) -{ - iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; -} - -static bool iommu_cmd_line_dma_api(void) -{ - return !!(iommu_cmd_line & IOMMU_CMD_LINE_DMA_API); -} - static int iommu_alloc_default_domain(struct iommu_group *group, struct device *dev); static struct iommu_domain *__iommu_domain_alloc(struct bus_type *bus, @@ -130,9 +120,7 @@ static const char *iommu_domain_type_str(unsigned int t) static int __init iommu_subsys_init(void) { - bool cmd_line = iommu_cmd_line_dma_api(); - - if (!cmd_line) { + if (!(iommu_cmd_line & IOMMU_CMD_LINE_DMA_API)) { if (IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH)) iommu_set_default_passthrough(false); else @@ -146,7 +134,8 @@ static int __init iommu_subsys_init(void) pr_info("Default domain type: %s %s\n", iommu_domain_type_str(iommu_def_domain_type), - cmd_line ? "(set via kernel command line)" : ""); + (iommu_cmd_line & IOMMU_CMD_LINE_DMA_API) ? + "(set via kernel command line)" : ""); return 0; } @@ -2757,16 +2746,14 @@ EXPORT_SYMBOL_GPL(iommu_alloc_resv_region); void iommu_set_default_passthrough(bool cmd_line) { if (cmd_line) - iommu_set_cmd_line_dma_api(); - + iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY; } void iommu_set_default_translated(bool cmd_line) { if (cmd_line) - iommu_set_cmd_line_dma_api(); - + iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; iommu_def_domain_type = IOMMU_DOMAIN_DMA; } From patchwork Tue Mar 16 15:38:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142871 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 C2D15C433E6 for ; Tue, 16 Mar 2021 16:20:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 949C96510A for ; Tue, 16 Mar 2021 16:20:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238665AbhCPQTy (ORCPT ); Tue, 16 Mar 2021 12:19:54 -0400 Received: from casper.infradead.org ([90.155.50.34]:43394 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238704AbhCPQTQ (ORCPT ); Tue, 16 Mar 2021 12:19:16 -0400 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=tQSgEyq3e/24fO04sGy+yuhUuhNZG+H4P8v8m08CZO8=; b=EMRSRUM85d23bRQNbCtWms/Ov9 +nO5obOz28orL3QyAnxxo5YGoQjKoJpInkSBrBw6Ab08Wcf7AzFwUEmYOYPry20bJxaEnMDAWfcmc 8NTOjcXEGFDdxEVys6bfCwI+0HvrAZIkdqmU2sqF/IpMyqV17YHtmS8IY7y9so0o6GU+tTV7nKRUJ SBelw/K1FANplHEgl6lIWuE1Otj96xISEy/2njegWGdKy3TH1dEFuDYEjhug4e91IWGCvH3KbOznB rryBNOOWoZgedj0eXq2d1sxXlZBnCyeNjYcQOI2guJe3ft2hJNQ84nsul4E6TfnnWZR5Nj9PLQb/F ALhiuglA==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCOp-000Imx-4h; Tue, 16 Mar 2021 16:18:30 +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, Robin Murphy Subject: [PATCH 16/18] iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE Date: Tue, 16 Mar 2021 16:38:22 +0100 Message-Id: <20210316153825.135976-17-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Robin Murphy Instead make the global iommu_dma_strict paramete in iommu.c canonical by exporting helpers to get and set it and use those directly in the drivers. This make sure that the iommu.strict parameter also works for the AMD and Intel IOMMU drivers on x86. As those default to lazy flushing a new IOMMU_CMD_LINE_STRICT is used to turn the value into a tristate to represent the default if not overriden by an explicit parameter. Signed-off-by: Robin Murphy . [ported on top of the other iommu_attr changes and added a few small missing bits] Signed-off-by: Christoph Hellwig --- drivers/iommu/amd/iommu.c | 23 +------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 50 +--------------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 - drivers/iommu/arm/arm-smmu/arm-smmu.c | 27 +-------- drivers/iommu/dma-iommu.c | 9 +-- drivers/iommu/intel/iommu.c | 64 ++++----------------- drivers/iommu/iommu.c | 27 ++++++--- include/linux/iommu.h | 4 +- 8 files changed, 40 insertions(+), 165 deletions(-) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index a69a8b573e40d0..ce6393d2224d86 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1771,26 +1771,6 @@ static struct iommu_group *amd_iommu_device_group(struct device *dev) return acpihid_device_group(dev); } -static int amd_iommu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - return -ENODEV; - case IOMMU_DOMAIN_DMA: - switch (attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: - *(int *)data = !amd_iommu_unmap_flush; - return 0; - default: - return -ENODEV; - } - break; - default: - return -EINVAL; - } -} - /***************************************************************************** * * The next functions belong to the dma_ops mapping/unmapping code. @@ -1855,7 +1835,7 @@ int __init amd_iommu_init_dma_ops(void) pr_info("IO/TLB flush on unmap enabled\n"); else pr_info("Lazy IO/TLB flushing enabled\n"); - + iommu_set_dma_strict(amd_iommu_unmap_flush); return 0; } @@ -2257,7 +2237,6 @@ const struct iommu_ops amd_iommu_ops = { .release_device = amd_iommu_release_device, .probe_finalize = amd_iommu_probe_finalize, .device_group = amd_iommu_device_group, - .domain_get_attr = amd_iommu_domain_get_attr, .get_resv_regions = amd_iommu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, .is_attach_deferred = amd_iommu_is_attach_deferred, 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 f1e38526d5bd40..996dfdf9d375dd 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2017,7 +2017,7 @@ static int arm_smmu_domain_finalise(struct iommu_domain *domain, .iommu_dev = smmu->dev, }; - if (smmu_domain->non_strict) + if (!iommu_get_dma_strict()) pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; pgtbl_ops = alloc_io_pgtable_ops(fmt, &pgtbl_cfg, smmu_domain); @@ -2449,52 +2449,6 @@ static struct iommu_group *arm_smmu_device_group(struct device *dev) return group; } -static int arm_smmu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); - - switch (domain->type) { - case IOMMU_DOMAIN_DMA: - switch (attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: - *(int *)data = smmu_domain->non_strict; - return 0; - default: - return -ENODEV; - } - break; - default: - return -EINVAL; - } -} - -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - int ret = 0; - struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); - - mutex_lock(&smmu_domain->init_mutex); - - switch (domain->type) { - case IOMMU_DOMAIN_DMA: - switch(attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: - smmu_domain->non_strict = *(int *)data; - break; - default: - ret = -ENODEV; - } - break; - default: - ret = -EINVAL; - } - - mutex_unlock(&smmu_domain->init_mutex); - return ret; -} - static int arm_smmu_enable_nesting(struct iommu_domain *domain) { struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); @@ -2607,8 +2561,6 @@ static struct iommu_ops arm_smmu_ops = { .probe_device = arm_smmu_probe_device, .release_device = arm_smmu_release_device, .device_group = arm_smmu_device_group, - .domain_get_attr = arm_smmu_domain_get_attr, - .domain_set_attr = arm_smmu_domain_set_attr, .enable_nesting = arm_smmu_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index f985817c967a25..edb1de479dd1a7 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -668,7 +668,6 @@ struct arm_smmu_domain { struct mutex init_mutex; /* Protects smmu pointer */ struct io_pgtable_ops *pgtbl_ops; - bool non_strict; atomic_t nr_ats_masters; enum arm_smmu_domain_stage stage; diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 0aa6d667274970..3dde22b1f8ffb0 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -761,6 +761,9 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, .iommu_dev = smmu->dev, }; + if (!iommu_get_dma_strict()) + pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; + if (smmu->impl && smmu->impl->init_context) { ret = smmu->impl->init_context(smmu_domain, &pgtbl_cfg, dev); if (ret) @@ -1499,18 +1502,6 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, return -ENODEV; } break; - case IOMMU_DOMAIN_DMA: - switch (attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: { - bool non_strict = smmu_domain->pgtbl_cfg.quirks & - IO_PGTABLE_QUIRK_NON_STRICT; - *(int *)data = non_strict; - return 0; - } - default: - return -ENODEV; - } - break; default: return -EINVAL; } @@ -1557,18 +1548,6 @@ static int arm_smmu_domain_set_attr(struct iommu_domain *domain, ret = -ENODEV; } break; - case IOMMU_DOMAIN_DMA: - switch (attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: - if (*(int *)data) - smmu_domain->pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; - else - smmu_domain->pgtbl_cfg.quirks &= ~IO_PGTABLE_QUIRK_NON_STRICT; - break; - default: - ret = -ENODEV; - } - break; default: ret = -EINVAL; } diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index af765c813cc84c..49cec03dec3dd2 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -304,10 +304,7 @@ static void iommu_dma_flush_iotlb_all(struct iova_domain *iovad) cookie = container_of(iovad, struct iommu_dma_cookie, iovad); domain = cookie->fq_domain; - /* - * The IOMMU driver supporting DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE - * implies that ops->flush_iotlb_all must be non-NULL. - */ + domain->ops->flush_iotlb_all(domain); } @@ -334,7 +331,6 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, struct iommu_dma_cookie *cookie = domain->iova_cookie; unsigned long order, base_pfn; struct iova_domain *iovad; - int attr; if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE) return -EINVAL; @@ -371,8 +367,7 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, init_iova_domain(iovad, 1UL << order, base_pfn); if (!cookie->fq_domain && (!dev || !dev_is_untrusted(dev)) && - !iommu_domain_get_attr(domain, DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, &attr) && - attr) { + domain->ops->flush_iotlb_all && !iommu_get_dma_strict()) { if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, iommu_dma_entry_dtor)) pr_warn("iova flush queue initialization failed\n"); diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 070ba76242e819..5b00adfb7212a7 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4377,6 +4377,17 @@ int __init intel_iommu_init(void) down_read(&dmar_global_lock); for_each_active_iommu(iommu, drhd) { + /* + * The flush queue implementation does not perform + * page-selective invalidations that are required for efficient + * TLB flushes in virtual environments. The benefit of batching + * is likely to be much lower than the overhead of synchronizing + * the virtual and physical IOMMU page-tables. + */ + if (!intel_iommu_strict && cap_caching_mode(iommu->cap)) { + pr_warn("IOMMU batching is disabled due to virtualization"); + intel_iommu_strict = 1; + } iommu_device_sysfs_add(&iommu->iommu, NULL, intel_iommu_groups, "%s", iommu->name); @@ -4385,6 +4396,7 @@ int __init intel_iommu_init(void) } up_read(&dmar_global_lock); + iommu_set_dma_strict(intel_iommu_strict); bus_set_iommu(&pci_bus_type, &intel_iommu_ops); if (si_domain && !hw_pass_through) register_memory_notifier(&intel_iommu_memory_nb); @@ -5440,57 +5452,6 @@ intel_iommu_enable_nesting(struct iommu_domain *domain) return ret; } -static bool domain_use_flush_queue(void) -{ - struct dmar_drhd_unit *drhd; - struct intel_iommu *iommu; - bool r = true; - - if (intel_iommu_strict) - return false; - - /* - * The flush queue implementation does not perform page-selective - * invalidations that are required for efficient TLB flushes in virtual - * environments. The benefit of batching is likely to be much lower than - * the overhead of synchronizing the virtual and physical IOMMU - * page-tables. - */ - rcu_read_lock(); - for_each_active_iommu(iommu, drhd) { - if (!cap_caching_mode(iommu->cap)) - continue; - - pr_warn_once("IOMMU batching is disabled due to virtualization"); - r = false; - break; - } - rcu_read_unlock(); - - return r; -} - -static int -intel_iommu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - switch (domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - return -ENODEV; - case IOMMU_DOMAIN_DMA: - switch (attr) { - case DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE: - *(int *)data = domain_use_flush_queue(); - return 0; - default: - return -ENODEV; - } - break; - default: - return -EINVAL; - } -} - /* * Check that the device does not live on an external facing PCI port that is * marked as untrusted. Such devices should not be able to apply quirks and @@ -5563,7 +5524,6 @@ const struct iommu_ops intel_iommu_ops = { .capable = intel_iommu_capable, .domain_alloc = intel_iommu_domain_alloc, .domain_free = intel_iommu_domain_free, - .domain_get_attr = intel_iommu_domain_get_attr, .enable_nesting = intel_iommu_enable_nesting, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 052cef11ae30df..e193ea88f3f842 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -69,6 +69,7 @@ static const char * const iommu_group_resv_type_string[] = { }; #define IOMMU_CMD_LINE_DMA_API BIT(0) +#define IOMMU_CMD_LINE_STRICT BIT(1) static int iommu_alloc_default_domain(struct iommu_group *group, struct device *dev); @@ -318,10 +319,26 @@ early_param("iommu.passthrough", iommu_set_def_domain_type); static int __init iommu_dma_setup(char *str) { - return kstrtobool(str, &iommu_dma_strict); + int ret = kstrtobool(str, &iommu_dma_strict); + + if (!ret) + iommu_cmd_line |= IOMMU_CMD_LINE_STRICT; + return ret; } early_param("iommu.strict", iommu_dma_setup); +void iommu_set_dma_strict(bool strict) +{ + if (strict || !(iommu_cmd_line & IOMMU_CMD_LINE_STRICT)) + iommu_dma_strict = strict; +} + +bool iommu_get_dma_strict(void) +{ + return iommu_dma_strict; +} +EXPORT_SYMBOL_GPL(iommu_get_dma_strict); + static ssize_t iommu_group_attr_show(struct kobject *kobj, struct attribute *__attr, char *buf) { @@ -1500,14 +1517,6 @@ static int iommu_group_alloc_default_domain(struct bus_type *bus, group->default_domain = dom; if (!group->domain) group->domain = dom; - - if (!iommu_dma_strict) { - int attr = 1; - iommu_domain_set_attr(dom, - DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, - &attr); - } - return 0; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 670e7a3523f286..3d50ecf3a49c24 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -498,6 +497,9 @@ extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); int iommu_enable_nesting(struct iommu_domain *domain); +void iommu_set_dma_strict(bool val); +bool iommu_get_dma_strict(void); + extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); From patchwork Tue Mar 16 15:38:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142873 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 6DBAFC433E9 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCRF-000J1I-SA; Tue, 16 Mar 2021 16:21:01 +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 17/18] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG Date: Tue, 16 Mar 2021 16:38:23 +0100 Message-Id: <20210316153825.135976-18-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use an explicit set_pgtable_quirks method instead that just passes the actual quirk bitmask instead. Signed-off-by: Christoph Hellwig Acked-by: Li Yang Acked-by: Will Deacon --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 5 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 64 +++++-------------------- drivers/iommu/arm/arm-smmu/arm-smmu.h | 2 +- drivers/iommu/iommu.c | 11 +++++ include/linux/io-pgtable.h | 4 -- include/linux/iommu.h | 12 ++++- 6 files changed, 35 insertions(+), 63 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 0f184c3dd9d9ec..4a0b14dad93e2e 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -188,10 +188,7 @@ int adreno_zap_shader_load(struct msm_gpu *gpu, u32 pasid) void adreno_set_llc_attributes(struct iommu_domain *iommu) { - struct io_pgtable_domain_attr pgtbl_cfg; - - pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_ARM_OUTER_WBWA; - iommu_domain_set_attr(iommu, DOMAIN_ATTR_IO_PGTABLE_CFG, &pgtbl_cfg); + iommu_set_pgtable_quirks(iommu, IO_PGTABLE_QUIRK_ARM_OUTER_WBWA); } struct msm_gem_address_space * diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 3dde22b1f8ffb0..b5e747eeed1362 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -770,8 +770,8 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, goto out_clear_smmu; } - if (smmu_domain->pgtbl_cfg.quirks) - pgtbl_cfg.quirks |= smmu_domain->pgtbl_cfg.quirks; + if (smmu_domain->pgtbl_quirks) + pgtbl_cfg.quirks |= smmu_domain->pgtbl_quirks; pgtbl_ops = alloc_io_pgtable_ops(fmt, &pgtbl_cfg, smmu_domain); if (!pgtbl_ops) { @@ -1484,29 +1484,6 @@ static struct iommu_group *arm_smmu_device_group(struct device *dev) return group; } -static int arm_smmu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); - - switch(domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_IO_PGTABLE_CFG: { - struct io_pgtable_domain_attr *pgtbl_cfg = data; - *pgtbl_cfg = smmu_domain->pgtbl_cfg; - - return 0; - } - default: - return -ENODEV; - } - break; - default: - return -EINVAL; - } -} - static int arm_smmu_enable_nesting(struct iommu_domain *domain) { struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); @@ -1522,37 +1499,19 @@ static int arm_smmu_enable_nesting(struct iommu_domain *domain) return ret; } -static int arm_smmu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) +static int arm_smmu_set_pgtable_quirks(struct iommu_domain *domain, + unsigned long quirks) { - int ret = 0; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + int ret = 0; mutex_lock(&smmu_domain->init_mutex); - - switch(domain->type) { - case IOMMU_DOMAIN_UNMANAGED: - switch (attr) { - case DOMAIN_ATTR_IO_PGTABLE_CFG: { - struct io_pgtable_domain_attr *pgtbl_cfg = data; - - if (smmu_domain->smmu) { - ret = -EPERM; - goto out_unlock; - } - - smmu_domain->pgtbl_cfg = *pgtbl_cfg; - break; - } - default: - ret = -ENODEV; - } - break; - default: - ret = -EINVAL; - } -out_unlock: + if (smmu_domain->smmu) + ret = -EPERM; + else + smmu_domain->pgtbl_quirks = quirks; mutex_unlock(&smmu_domain->init_mutex); + return ret; } @@ -1611,9 +1570,8 @@ static struct iommu_ops arm_smmu_ops = { .probe_device = arm_smmu_probe_device, .release_device = arm_smmu_release_device, .device_group = arm_smmu_device_group, - .domain_get_attr = arm_smmu_domain_get_attr, - .domain_set_attr = arm_smmu_domain_set_attr, .enable_nesting = arm_smmu_enable_nesting, + .set_pgtable_quirks = arm_smmu_set_pgtable_quirks, .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.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h index d2a2d1bc58bad8..c31a59d35c64da 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.h +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h @@ -364,7 +364,7 @@ enum arm_smmu_domain_stage { struct arm_smmu_domain { struct arm_smmu_device *smmu; struct io_pgtable_ops *pgtbl_ops; - struct io_pgtable_domain_attr pgtbl_cfg; + unsigned long pgtbl_quirks; const struct iommu_flush_ops *flush_ops; struct arm_smmu_cfg cfg; enum arm_smmu_domain_stage stage; diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index e193ea88f3f842..afd21b37e319ee 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2698,6 +2698,17 @@ int iommu_enable_nesting(struct iommu_domain *domain) } EXPORT_SYMBOL_GPL(iommu_enable_nesting); +int iommu_set_pgtable_quirks(struct iommu_domain *domain, + unsigned long quirk) +{ + if (domain->type != IOMMU_DOMAIN_UNMANAGED) + return -EINVAL; + if (!domain->ops->set_pgtable_quirks) + return -EINVAL; + return domain->ops->set_pgtable_quirks(domain, quirk); +} +EXPORT_SYMBOL_GPL(iommu_set_pgtable_quirks); + void iommu_get_resv_regions(struct device *dev, struct list_head *list) { const struct iommu_ops *ops = dev->bus->iommu_ops; diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h index a4c9ca2c31f10a..4d40dfa75b55fe 100644 --- a/include/linux/io-pgtable.h +++ b/include/linux/io-pgtable.h @@ -204,10 +204,6 @@ struct io_pgtable { #define io_pgtable_ops_to_pgtable(x) container_of((x), struct io_pgtable, ops) -struct io_pgtable_domain_attr { - unsigned long quirks; -}; - static inline void io_pgtable_tlb_flush_all(struct io_pgtable *iop) { if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_all) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 3d50ecf3a49c24..a53d74f2007b14 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -107,7 +107,6 @@ enum iommu_cap { */ enum iommu_attr { - DOMAIN_ATTR_IO_PGTABLE_CFG, DOMAIN_ATTR_MAX, }; @@ -195,6 +194,7 @@ struct iommu_iotlb_gather { * @domain_get_attr: Query domain attributes * @domain_set_attr: Change domain attributes * @enable_nesting: Enable nesting + * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*) * @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 +248,8 @@ struct iommu_ops { int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); int (*enable_nesting)(struct iommu_domain *domain); + int (*set_pgtable_quirks)(struct iommu_domain *domain, + unsigned long quirks); /* Request/Free a list of reserved regions for a device */ void (*get_resv_regions)(struct device *dev, struct list_head *list); @@ -496,6 +498,8 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); int iommu_enable_nesting(struct iommu_domain *domain); +int iommu_set_pgtable_quirks(struct iommu_domain *domain, + unsigned long quirks); void iommu_set_dma_strict(bool val); bool iommu_get_dma_strict(void); @@ -877,6 +881,12 @@ static inline int iommu_domain_set_attr(struct iommu_domain *domain, return -EINVAL; } +static inline int iommu_set_pgtable_quirks(struct iommu_domain *domain, + unsigned long quirks) +{ + return 0; +} + static inline int iommu_device_register(struct iommu_device *iommu) { return -ENODEV; From patchwork Tue Mar 16 15:38:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12142911 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,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 E92A3C433E6 for ; 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Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMCTa-000J9w-2k; Tue, 16 Mar 2021 16:23:24 +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 18/18] iommu: remove iommu_domain_{get,set}_attr Date: Tue, 16 Mar 2021 16:38:24 +0100 Message-Id: <20210316153825.135976-19-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Remove the now unused iommu attr infrastructure. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon --- drivers/iommu/iommu.c | 26 -------------------------- include/linux/iommu.h | 36 ------------------------------------ 2 files changed, 62 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index afd21b37e319ee..d8df26d13c7371 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2662,32 +2662,6 @@ static int __init iommu_init(void) } core_initcall(iommu_init); -int iommu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - if (!domain->ops->domain_get_attr) - return -EINVAL; - return domain->ops->domain_get_attr(domain, attr, data); -} -EXPORT_SYMBOL_GPL(iommu_domain_get_attr); - -int iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - int ret = 0; - - switch (attr) { - default: - if (domain->ops->domain_set_attr == NULL) - return -EINVAL; - - ret = domain->ops->domain_set_attr(domain, attr, data); - } - - return ret; -} -EXPORT_SYMBOL_GPL(iommu_domain_set_attr); - int iommu_enable_nesting(struct iommu_domain *domain) { if (domain->type != IOMMU_DOMAIN_UNMANAGED) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index a53d74f2007b14..9319333ca0b827 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -96,20 +96,6 @@ enum iommu_cap { IOMMU_CAP_NOEXEC, /* IOMMU_NOEXEC flag */ }; -/* - * Following constraints are specifc to FSL_PAMUV1: - * -aperture must be power of 2, and naturally aligned - * -number of windows must be power of 2, and address space size - * of each window is determined by aperture size / # of windows - * -the actual size of the mapped region of a window must be power - * of 2 starting with 4KB and physical address must be naturally - * aligned. - */ - -enum iommu_attr { - DOMAIN_ATTR_MAX, -}; - /* These are the possible reserved region types */ enum iommu_resv_type { /* Memory regions which must be mapped 1:1 at all times */ @@ -191,8 +177,6 @@ struct iommu_iotlb_gather { * @probe_finalize: Do final setup work after the device is added to an IOMMU * group and attached to the groups domain * @device_group: find iommu group for a particular device - * @domain_get_attr: Query domain attributes - * @domain_set_attr: Change domain attributes * @enable_nesting: Enable nesting * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*) * @get_resv_regions: Request list of reserved regions for a device @@ -243,10 +227,6 @@ struct iommu_ops { void (*release_device)(struct device *dev); void (*probe_finalize)(struct device *dev); struct iommu_group *(*device_group)(struct device *dev); - int (*domain_get_attr)(struct iommu_domain *domain, - enum iommu_attr attr, void *data); - int (*domain_set_attr)(struct iommu_domain *domain, - enum iommu_attr attr, void *data); int (*enable_nesting)(struct iommu_domain *domain); int (*set_pgtable_quirks)(struct iommu_domain *domain, unsigned long quirks); @@ -493,10 +473,6 @@ extern int iommu_page_response(struct device *dev, extern int iommu_group_id(struct iommu_group *group); extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *); -extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, - void *data); -extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, - void *data); int iommu_enable_nesting(struct iommu_domain *domain); int iommu_set_pgtable_quirks(struct iommu_domain *domain, unsigned long quirks); @@ -869,18 +845,6 @@ static inline int iommu_group_id(struct iommu_group *group) return -ENODEV; } -static inline int iommu_domain_get_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - return -EINVAL; -} - -static inline int iommu_domain_set_attr(struct iommu_domain *domain, - enum iommu_attr attr, void *data) -{ - return -EINVAL; -} - static inline int iommu_set_pgtable_quirks(struct iommu_domain *domain, unsigned long quirks) {