From patchwork Thu Apr 1 15:52:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178293 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 7CA2FC433B4 for ; Thu, 1 Apr 2021 16:08:12 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E77AB6135A for ; Thu, 1 Apr 2021 16:08:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E77AB6135A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=v15Zc3vP0Jji/5IQqAAXFYjyjR7AaLtdIjULwtJ2GIU=; b=Ew5+e7wA5ip7bgsXo3GZsAgYf 9YdxQ9JSIrz+cXKELVbJgiBJ4hVrgmsE7W7sVf4l61E60tTdeMJc6BPSJrM28F2eaIgTweKjfdSXl QDKn8Htg6876VulkXtpkwUYCz6IaYxcbDS8WgyrGRblKdH3wAFXmkfs0xb6x+Wwot8+Dc5VlS/tCu R1xxAH5jP9UU4wtOP8z/EBHrm8oIO6N60IOZ9ELyEWYMIm1yEnXTC4tSe7xN0jfnKGWg5fZ8E2Y9Q 6yPJzM+dpcspFpZaVQfcfTKNJj3y0jdNWYRqoonJzBKUslyz9h6e7deH/ofZM78NHj8dyJzBxTEJj VTB9RS3Gg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRzpx-00A9td-Ax; Thu, 01 Apr 2021 16:06:25 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdZ-00A6Ge-VV for linux-arm-kernel@lists.infradead.org; Thu, 01 Apr 2021 15:53:38 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=bDulEFC5ArmGy+DYIEUW3EiV2iZECmYjHEkGluCYUVw=; b=uX9/ysk2c5yNZPrgqGa+LKrjjY CPo31KIQUr5iR8POv/BJJzIxOsBj3AtcHQZT4ZYyRDhN2hPxaUMrv3ZC33WIurTNlhicSccdFRrhH iVY5u1L8eBe6Bpiic6KX6G1Qecb3vN2VQ2toNFRHLaf56VeoCaD2qtQpnJgff3H//8x/auMMo23XQ bb/e9JWW1DkIbrk8f/YNVPRIiP2baTSrHdR85H1vQSKFoJV3J4TG+fMefpid8PQ+VVnAS5LZsjokM v2KIT4oKfgvPo9nNvUERBun216Eab+LPm2LkfQDNmuLRxyFeHTMmfifogA4ZXzoCCyxui7lrErfSp swXXamBQ==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzd9-00CiZs-Pd; Thu, 01 Apr 2021 15:53:12 +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 01/20] iommu: remove the unused domain_window_disable method Date: Thu, 1 Apr 2021 17:52:37 +0200 Message-Id: <20210401155256.298656-2-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org domain_window_disable is wired up by fsl_pamu, but never actually called. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 Thu Apr 1 15:52:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178297 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 2AA6AC433ED for ; Thu, 1 Apr 2021 16:09:39 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 83DA16135A for ; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdC-00Cia1-Hn; Thu, 01 Apr 2021 15:53:15 +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 02/20] iommu/fsl_pamu: remove fsl_pamu_get_domain_attr Date: Thu, 1 Apr 2021 17:52:38 +0200 Message-Id: <20210401155256.298656-3-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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: Will Deacon Acked-by: Li Yang --- 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 Thu Apr 1 15:52:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178291 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 DF05BC433B4 for ; Thu, 1 Apr 2021 16:07:18 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 462E961378 for ; Thu, 1 Apr 2021 16:07:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 462E961378 Authentication-Results: mail.kernel.org; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdF-00CiaA-6m; Thu, 01 Apr 2021 15:53:17 +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 03/20] iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRY Date: Thu, 1 Apr 2021 17:52:39 +0200 Message-Id: <20210401155256.298656-4-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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: Will Deacon Acked-by: Li Yang --- 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 Thu Apr 1 15:52:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178299 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42CAAC433ED for ; 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See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Keep the functionality to allocate the domain together. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 Thu Apr 1 15:52:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178295 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 DBDF3C433B4 for ; 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bh=OE9Tv7ElEcmaGEDMHH+RVddV23prrQvFheeaxpR6j8o=; b=W4CWcsN4ASf5IVTDaqzvz8CAPp BDbDfz5QzYqHWmIoTvvH/jqUuqwuKKpoWdtXzBQLOCo6CuHUBd5h0jMnsmIryZAzNDb5XCdF+kLEp nOzYjxXKxXDqOIPJIPuKiFmYUnrE7cLKzOpErzdahn8owP5WtWv+899GO0d3++zCwS24CojvzLLCg SB0FdqcuNnQ7HFnDJLcVeYivlO8tmsPsbKhsr1X1S9QUJK3tDTiW7t9yBWwXZQUWMUYaqsQ4MYfo8 JTkcGaGZnuDjHnSSyEyGLfNoW7gqF5Z8s4K4ynRroYsDo7bUPspQcwExImo/rtFDpTGBOAXHVkQ+0 ohkCanTA==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdK-00CiaT-M0; Thu, 01 Apr 2021 15:53:23 +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 05/20] iommu/fsl_pamu: remove support for multiple windows Date: Thu, 1 Apr 2021 17:52:41 +0200 Message-Id: <20210401155256.298656-6-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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: Will Deacon Acked-by: Li Yang --- 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 | 16 +- drivers/soc/fsl/qbman/qman_portal.c | 7 - include/linux/iommu.h | 1 - 6 files changed, 60 insertions(+), 513 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..d3523ee9999d83 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -17,23 +17,11 @@ 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. + * windows for a domain. */ - 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 Thu Apr 1 15:52:42 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdN-00Cib9-IH; Thu, 01 Apr 2021 15:53:26 +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 06/20] iommu/fsl_pamu: remove ->domain_window_enable Date: Thu, 1 Apr 2021 17:52:42 +0200 Message-Id: <20210401155256.298656-7-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 15 --- drivers/iommu/iommu.c | 11 -- drivers/soc/fsl/qbman/qman_portal.c | 7 -- include/linux/iommu.h | 17 --- 5 files changed, 14 insertions(+), 218 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index e6bdd38fc18409..689035e9d40955 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 d3523ee9999d83..13ee06e0ef0136 100644 --- a/drivers/iommu/fsl_pamu_domain.h +++ b/drivers/iommu/fsl_pamu_domain.h @@ -9,24 +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. - */ - 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 @@ -35,7 +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 Thu Apr 1 15:52:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178301 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 55AB7C433ED for ; Thu, 1 Apr 2021 16:11:47 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AD7A86135A for ; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdQ-00CibG-7o; Thu, 01 Apr 2021 15:53:28 +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 07/20] iommu/fsl_pamu: replace DOMAIN_ATTR_FSL_PAMU_STASH with a direct call Date: Thu, 1 Apr 2021 17:52:43 +0200 Message-Id: <20210401155256.298656-8-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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: Will Deacon Acked-by: Li Yang --- 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 689035e9d40955..557a152c1d2c49 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 Thu Apr 1 15:52:44 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdS-00CibP-Sf; Thu, 01 Apr 2021 15:53:31 +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 08/20] iommu/fsl_pamu: merge pamu_set_liodn and map_liodn Date: Thu, 1 Apr 2021 17:52:44 +0200 Message-Id: <20210401155256.298656-9-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 557a152c1d2c49..198725ef27954f 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 Thu Apr 1 15:52:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178307 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 4CC4CC433B4 for ; Thu, 1 Apr 2021 16:13:01 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CCED261184 for ; Thu, 1 Apr 2021 16:13:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CCED261184 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=hQnlRDepdnuI6WB79Pobz91ZkqjNrPRXYiP4OOoxLb0=; b=YNQfnibpiB7YU3L/mjk72Jflm plTFpIOAFCzQO57pA9D+IgFT+b50VPuXgKhkVMEp6mQOKYwBD00xEUWV5/xDBpejadOm8D8r48xm3 HnnPjaCavcc4CFFoLJgXIpf+7W0fhjp8z2qlA+KqWAJxmhZPCKHYpJiQbxVfIrGjmjt+KZBz1Bh0x wQxcqh+tnq0GMbegPqkEYt2gFPC9JCq4FsaGuoG2CFIw3IK5/OcUbDFAvvA91eLMuiixUSrperGGU buMClbRMMhaK6hV8FHRzeCnY4j4IFmQibuxmeuyFZOx78gsN9xAy4a02u+ZPLGbNK7rmt74m4WP1j 2uZO9zZdg==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRzus-00ABL9-0n; Thu, 01 Apr 2021 16:11:30 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdk-00A6JJ-Dj for linux-arm-kernel@lists.infradead.org; Thu, 01 Apr 2021 15:53:48 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=3htM5/PYXZME0l2i9pFdDx0WBGWJiRf3+eQvo7P2pnc=; b=nPSHNV2elgH6I2xYzqYwIEdgEm +P+30/xffa6snPVkDvxr9MRQU7FEG5jH2N+sjQzMUWyfmPvnjygMOV2HNmvjnx3koHR8urzIvNg+9 HMKoNGJTnmBHx49di3qjpyU2TrXWYQ3zLaG4Gi6oq8XXFYL0/lrj/uGTbjTD8Jl4rpOeDjwtuy0x2 OzIilhJYLUuhwRNYC7iRL+YPbAWFfvT8O8XtzRqB8eKUSdvzwNgmKc0psQ9r46azGDvM8hDHthLfD TC1D61/qri8bi+w90aDw3rWS+R0d8Ukj3MBcUjOPAbnfxMqWSdcstyA+Ig4papei9JbztPeIVpua2 S3oXmTww==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdV-00Cibk-GJ; Thu, 01 Apr 2021 15:53:34 +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 09/20] iommu/fsl_pamu: merge handle_attach_device into fsl_pamu_attach_device Date: Thu, 1 Apr 2021 17:52:45 +0200 Message-Id: <20210401155256.298656-10-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org No good reason to split this functionality over two functions. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 198725ef27954f..41927c3c417751 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 Thu Apr 1 15:52:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178309 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 830BFC433B4 for ; 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bh=rBjgOpr0tzNkPVLnZSe6stElDoTGjZis4zpsufGo8Pc=; b=c0Mip3kVULe6QjvABjE3wLhoHi R/D5vtScPvo83qhv3axkBw4kbTEa6bwS3+Do6h8BO9gcmXtwA1+lrFFdjowPelND/sTlkhN+xSdMh goOUyVtk7vqmZNWXPWa3x8pETu/KCjKoUX1tPw/n6/Li3c8JO5bkCUkmaAwiC2W3knx5gxSbuj+/S nszzVSuD7B/DX1VoqvqCpx+4Rj02N9s1rsUjkr7wsZAvupLT3Gy8oT6DmWLcUOL7rqnQR3zX2fnhL ennyvA3k09CWecu1ksSogTTvo9yQdn5q6ylO0U8AIauJ7d0mTW2FDSqFNwb0t85Q1U9FhG9z+Zyqf dwa8bw0Q==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdY-00Cic9-4K; Thu, 01 Apr 2021 15:53:36 +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 10/20] iommu/fsl_pamu: enable the liodn when attaching a device Date: Thu, 1 Apr 2021 17:52:46 +0200 Message-Id: <20210401155256.298656-11-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Instead of a separate call to enable all devices from the list, just enable the liodn once 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: Will Deacon Acked-by: Li Yang --- 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 41927c3c417751..c2e7e17570e76d 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 Thu Apr 1 15:52:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178315 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CB11C433B4 for ; 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bh=wDCpF7eA/jBfJE8TX4WtMtbQcLjyYKphl/5zM+AMN4E=; b=LafK1H4R5CszpawGybodA4QlYz djVgVU7nIHYvARbHMtDR3EViy1Cet1N99EQ8Dpy2YiA/KdQtX2BL9Ibiaz0GzoEKwBm0OQxKgWvrl mRD7LaUUdCMLrEZblY5EfqmwSCY3BG94IqbKCTD7u8gHB8BJBKXa/98vOrZjoVjOr29NM+ce+aQvZ bRd8eyGos7K86FuEDzsy8MzyBCYjmeW61WRBRaoCGKQSTPhZ7lFlZV+2F281ghBIfX40mdPPWC5wP +zgDAbAslIshmHmj8X0iesvI5VzGb22t7SAWXCi5XrNYxl1XQGFmhYVbB9YzUdnx62zCxWaFhlLKe 6ATDquqQ==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzda-00CicQ-Q4; Thu, 01 Apr 2021 15:53:39 +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 11/20] iommu/fsl_pamu: remove the snoop_id field Date: Thu, 1 Apr 2021 17:52:47 +0200 Message-Id: <20210401155256.298656-12-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The snoop_id is always set to ~(u32)0. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 c2e7e17570e76d..e9c1e0dd68f084 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 Thu Apr 1 15:52:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178313 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 12D33C433ED for ; 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bh=Z9JPy9TPg1G6vRAErbmN4dHQgiCuv74xNNZwb3XvOzc=; b=z9dfmxVC+AkYI7A3FhvuGUicXf WsoEPdEBOr+mzC8jJKT9D43IWxD08C6UN9gP6Ng4MFLpHmmOK/CaiM+Kj8DAhByTQGNSZnoKEF9+y 2Rs0dYWfh0Z8jr5K8/Eyyi2JziQCArZaQo30OIrvsewrAgQ0huTTx0kHtqju6eTI1uSgCbrZiUQc9 4HDViC6rLsC62o8HMxHELgdcrVhxuR6TqKCMUlRCPGi4fNvZxAOMIpWTR1OEyU4LN6LNCAeyiOii1 7FkldJGkzOokyuTL3g131A2VtwTYvp4sN7duB59mWrFNH3kHEwrIRmYWub3Vv4NX+o2+kciSwQZWr NJ/psRCg==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdd-00Cicd-Dp; Thu, 01 Apr 2021 15:53:41 +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 12/20] iommu/fsl_pamu: remove the rpn and snoop_id arguments to pamu_config_ppaac Date: Thu, 1 Apr 2021 17:52:48 +0200 Message-Id: <20210401155256.298656-13-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org These are always wired to fixed values, so don't bother passing them as arguments. Signed-off-by: Christoph Hellwig --- drivers/iommu/fsl_pamu.c | 14 +++----------- drivers/iommu/fsl_pamu.h | 3 +-- drivers/iommu/fsl_pamu_domain.c | 6 +++--- 3 files changed, 7 insertions(+), 16 deletions(-) diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c index 3e1647cd5ad47a..742fa0e8c45b88 100644 --- a/drivers/iommu/fsl_pamu.c +++ b/drivers/iommu/fsl_pamu.c @@ -181,18 +181,14 @@ int pamu_update_paace_stash(int liodn, u32 value) * @win_addr: starting address of DSA window * @win-size: size of DSA window * @omi: Operation mapping index -- if ~omi == 0 then omi not defined - * @rpn: real (true physical) page number * @stashid: cache stash id for associated cpu -- if ~stashid == 0 then * stashid not defined - * @snoopid: snoop id for hardware coherency -- if ~snoopid == 0 then - * snoopid not defined * @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, - int prot) + u32 omi, u32 stashid, int prot) { struct paace *ppaace; @@ -234,13 +230,9 @@ int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, if (~stashid != 0) set_bf(ppaace->impl_attr, PAACE_IA_CID, stashid); - /* configure snoop id */ - if (~snoopid != 0) - ppaace->domain_attr.to_host.snpid = snoopid; - 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); + ppaace->twbah = 0; + set_bf(ppaace->win_bitfields, PAACE_WIN_TWBAL, 0); 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); diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h index 04fd843d718dd1..c96b29f0c7077f 100644 --- a/drivers/iommu/fsl_pamu.h +++ b/drivers/iommu/fsl_pamu.h @@ -384,8 +384,7 @@ int pamu_domain_init(void); int pamu_enable_liodn(int liodn); int pamu_disable_liodn(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, - int prot); + u32 omi, uint32_t stashid, int prot); u32 get_stash_id(u32 stash_dest_hint, u32 vcpu); void get_ome_index(u32 *omi_index, struct device *dev); diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index e9c1e0dd68f084..c83f1e7c2cb0c9 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -96,13 +96,13 @@ static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev, if (ret) goto out_unlock; ret = pamu_config_ppaace(liodn, geom->aperture_start, - geom->aperture_end + 1, omi_index, 0, - ~(u32)0, dma_domain->stash_id, 0); + geom->aperture_end + 1, omi_index, + 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, ~(u32)0, dma_domain->stash_id, + dma_domain->stash_id, PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); out_unlock: spin_unlock_irqrestore(&iommu_lock, flags); From patchwork Thu Apr 1 15:52:49 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdg-00Cict-3h; Thu, 01 Apr 2021 15:53:44 +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 13/20] iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaace Date: Thu, 1 Apr 2021 17:52:49 +0200 Message-Id: <20210401155256.298656-14-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The win_addr and win_size parameters are always set to 0 and 1 << 36 respectively, so just hard code them. Signed-off-by: Christoph Hellwig --- drivers/iommu/fsl_pamu.c | 23 ++++------------------- drivers/iommu/fsl_pamu.h | 3 +-- drivers/iommu/fsl_pamu_domain.c | 10 ++-------- 3 files changed, 7 insertions(+), 29 deletions(-) diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c index 742fa0e8c45b88..fc38b1fba7cff0 100644 --- a/drivers/iommu/fsl_pamu.c +++ b/drivers/iommu/fsl_pamu.c @@ -178,8 +178,6 @@ int pamu_update_paace_stash(int liodn, u32 value) * pamu_config_paace() - Sets up PPAACE entry for specified liodn * * @liodn: Logical IO device number - * @win_addr: starting address of DSA window - * @win-size: size of DSA window * @omi: Operation mapping index -- if ~omi == 0 then omi not defined * @stashid: cache stash id for associated cpu -- if ~stashid == 0 then * stashid not defined @@ -187,35 +185,22 @@ int pamu_update_paace_stash(int liodn, u32 value) * * 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, u32 stashid, int prot) +int pamu_config_ppaace(int liodn, u32 omi, u32 stashid, int prot) { struct paace *ppaace; - 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", - &win_size); - return -EINVAL; - } - - if (win_addr & (win_size - 1)) { - pr_debug("window address is not aligned with window size\n"); - return -EINVAL; - } - ppaace = pamu_get_ppaace(liodn); if (!ppaace) return -ENOENT; /* window size is 2^(WSE+1) bytes */ set_bf(ppaace->addr_bitfields, PPAACE_AF_WSE, - map_addrspace_size_to_wse(win_size)); + map_addrspace_size_to_wse(1ULL << 36)); pamu_init_ppaace(ppaace); - ppaace->wbah = win_addr >> (PAMU_PAGE_SHIFT + 20); - set_bf(ppaace->addr_bitfields, PPAACE_AF_WBAL, - (win_addr >> PAMU_PAGE_SHIFT)); + ppaace->wbah = 0; + set_bf(ppaace->addr_bitfields, PPAACE_AF_WBAL, 0); /* set up operation mapping if it's configured */ if (omi < OME_NUMBER_ENTRIES) { diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h index c96b29f0c7077f..36df7975ff64d3 100644 --- a/drivers/iommu/fsl_pamu.h +++ b/drivers/iommu/fsl_pamu.h @@ -383,8 +383,7 @@ struct ome { int pamu_domain_init(void); int pamu_enable_liodn(int liodn); int pamu_disable_liodn(int liodn); -int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size, - u32 omi, uint32_t stashid, int prot); +int pamu_config_ppaace(int liodn, u32 omi, uint32_t stashid, int prot); u32 get_stash_id(u32 stash_dest_hint, u32 vcpu); void get_ome_index(u32 *omi_index, struct device *dev); diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index c83f1e7c2cb0c9..32944d67baa495 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -78,8 +78,6 @@ static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain, static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev, int liodn) { - 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; @@ -95,14 +93,10 @@ static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev, ret = pamu_disable_liodn(liodn); if (ret) goto out_unlock; - ret = pamu_config_ppaace(liodn, geom->aperture_start, - geom->aperture_end + 1, omi_index, - dma_domain->stash_id, 0); + ret = pamu_config_ppaace(liodn, omi_index, dma_domain->stash_id, 0); if (ret) goto out_unlock; - ret = pamu_config_ppaace(liodn, geom->aperture_start, - geom->aperture_end + 1, ~(u32)0, - dma_domain->stash_id, + ret = pamu_config_ppaace(liodn, ~(u32)0, dma_domain->stash_id, PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE); out_unlock: spin_unlock_irqrestore(&iommu_lock, flags); From patchwork Thu Apr 1 15:52:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178319 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 292E3C433ED for ; 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bh=dA6aRKwdw9J8So+O8+0bp+rSmQwVyYYKYWe85X1bhW4=; b=Xx5pdH72zTTmwhOaHo6tzjQO7g e4GZrJego1I3TJIIVBK1qHs3CHRFfzdQx/+M4oCoWcuHMTZn1kNzHgtQNE7iD0IwZY11XI3xu4ekN 400CARd3X6XGhhTTHIaQ+A/pxD5DU8xuynd6GrtMNB3xfXd3gEfX/sHeQm/4hIgsp7SlZws2A0V2L Srxnr6gYuRyVOS/NI3PiIvOoK6O0CIUNqTQFrCF+0d0cRU2leTSCbsOcoLztI9+wTXfRXLeKkdCsQ wuORsvm7lfxJH0IdNGBZ6eR8t+7AnkyEIuOI3tz23BxIVq81dYGEMunU9nz+qPUSVhvTl4Mn4qtTA XG3x8GrA==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdi-00Cid8-SW; Thu, 01 Apr 2021 15:53:47 +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 14/20] iommu: remove DOMAIN_ATTR_PAGING Date: Thu, 1 Apr 2021 17:52:50 +0200 Message-Id: <20210401155256.298656-15-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DOMAIN_ATTR_PAGING is never used. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 Thu Apr 1 15:52:51 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdl-00CidN-M2; Thu, 01 Apr 2021 15:53:50 +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 15/20] iommu: remove DOMAIN_ATTR_GEOMETRY Date: Thu, 1 Apr 2021 17:52:51 +0200 Message-Id: <20210401155256.298656-16-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The geometry information can be trivially queried from the iommu_domain struture. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 45cbfd4879a553..ae6d72f17aee78 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2262,7 +2262,7 @@ 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); @@ -2343,10 +2343,9 @@ 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; } @@ -2369,8 +2368,8 @@ 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; @@ -2503,7 +2502,6 @@ 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; @@ -2512,12 +2510,12 @@ 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 e0a27e33629356..cd1ff7b556dcee 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -832,18 +832,14 @@ 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 Thu Apr 1 15:52:52 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdo-00CieJ-PY; Thu, 01 Apr 2021 15:53:53 +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 16/20] iommu: remove DOMAIN_ATTR_NESTING Date: Thu, 1 Apr 2021 17:52:52 +0200 Message-Id: <20210401155256.298656-17-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use an explicit enable_nesting method instead. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 ae6d72f17aee78..3c8048d78282ae 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -2330,10 +2330,7 @@ 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 Thu Apr 1 15:52:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178325 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20060C433B4 for ; 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bh=g/lYlQLJmKIelbYGsJOMK8K3baqJu4KrHdTwHylUH98=; b=yk7zp4/a/VVy/qjNyBy+25HhKE M3MLuAAEGCHkhoP6K+6R5Jrd2o9QTpPa/n+D+jPbw8PfF0Hj+LlRVl4uxYQG9l3BZZ+4dc5I8r9e2 IjqvjarJiebl1F9i4ul0iOVUIzj1oDsJXbYJ2qkBZ0gl0i5I6XA+OeaYxW2MRRFfMRRV32/ae8F5J dDH6vXR/maOTz6DfB53SyQcBbg8iRcUEK8qYomkv4uD4P3cJvtU6CBHm5BwRr30BFkiHIqeNzDoDA LbAzmQekckWvz0YH4pL5dkKd9Izu6Dwi1ld24zxZdieLRhcx6J9vWJ1Ig/OL/cF1UeinsSVUXpGco +Rs+TVvQ==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdr-00Ciee-IE; Thu, 01 Apr 2021 15:53:56 +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 17/20] iommu: remove iommu_set_cmd_line_dma_api and iommu_cmd_line_dma_api Date: Thu, 1 Apr 2021 17:52:53 +0200 Message-Id: <20210401155256.298656-18-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Thu Apr 1 15:52:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178327 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 45E1EC433B4 for ; Thu, 1 Apr 2021 16:16:05 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9FB1361375 for ; Thu, 1 Apr 2021 16:16:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9FB1361375 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=nxVpv4nh0HIL+/cwMZDEoJtHS2qICzToHNuzZFkKUnM=; b=fQU3wkXUGvF5cQeWEG008u4UM OexW/335dV7rxlywA6941QIWo7hw8QaeOmjiVkCinOBvwf+dOHSuShgbIPeU9V1ZO2fKnoOAl7BFZ VuT4peEYYD0LzP1ppiPySAANUZhM7SX8pZjkUVU+N+I3E7z50Hc/d9VjFZcwyAKk3LlvfO8ZKDW/5 FtSZaRAMYrLzCs1c6i9G36rSf3u4/oHCKse6CNhaTr1ueFh70D+F0KIbBVJjosdXIyxWUM3+rve0F m10ysGl1F++wNxmT4ctwzQPJzH6wWqxXHbd6nBxuHLOahCueV6u2V3GUbt3Uo8zcQOfOQ1Q29XUPa e6+MvNZsw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRzxk-00ACpC-4L; Thu, 01 Apr 2021 16:14:28 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRze9-00A6OU-SS for linux-arm-kernel@lists.infradead.org; Thu, 01 Apr 2021 15:54:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=2jB0lICczC+8C+7sLnN8T5SoMdPSQEUKo0MtRD4p4Kc=; b=k/NIov0eMALhJCe3Vn6P9RuUsb GGQ8nsVkOXXUoqiJfI6rBbB12oajQ3+VesnNhwdmBN4w45amN1gbtrE5giXcR3IriVJrqX/Mn8x6d qF1qUST3CeOapsx5k/038SgUkY30elW2vh+/YFA+H9TzES1EuZXsQ5zf8yta/qY6Vbc7iQUtBfc/l +roRXAKg1zniU9E2cQGnHHs7mJvmarSsnsHNYERgKYVQS3n/wDDASjWM3euZcvHfJpxsVFu2xiiAG 6ahAOY7dDAYBbYvNiTfUc02/uNNK49Jai8V4y3dOfsK5SUjDEIe8z06NTTPQAprl2VrOTjgRcRPFc NeQ8Hz/A==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdu-00CifM-9V; Thu, 01 Apr 2021 15:53:58 +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, Robin Murphy Subject: [PATCH 18/20] iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE Date: Thu, 1 Apr 2021 17:52:54 +0200 Message-Id: <20210401155256.298656-19-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: 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 | 30 +++++++--- include/linux/iommu.h | 4 +- 8 files changed, 43 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..91f7e7a3b34dfd 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(domain)) 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..f17c54a76ef6f1 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(domain)) + 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..d67dfa320176ac 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(domain)) { 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..d191e4a399785d 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 +319,29 @@ 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(struct iommu_domain *domain) +{ + /* only allow lazy flushing for DMA domains */ + if (domain->type == IOMMU_DOMAIN_DMA) + return iommu_dma_strict; + return true; +} +EXPORT_SYMBOL_GPL(iommu_get_dma_strict); + static ssize_t iommu_group_attr_show(struct kobject *kobj, struct attribute *__attr, char *buf) { @@ -1500,14 +1520,6 @@ 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..4e1051dd8d9946 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(struct iommu_domain *domain); + extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev, unsigned long iova, int flags); From patchwork Thu Apr 1 15:52:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178329 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 AE2BBC433ED for ; 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bh=t3+j7oE4m8hHvZnx2Arcm+rr/82u0pUfHN8zF6/xR9E=; b=fJXqhckHmBh50Vl8BSqpluikrM wiJ/AxH4UsNpWLTsk+FoWfR5/A1qVv9HMXUBbpHrC0pcACkPigO4L7PJuy8CvOjqWv6SmogpUAmz2 B2tFOZ6NmYjiTx8uT8/Or2JY3+OStVKRal6Yp2jzGhjvwvEfyg+TDmkwl45zdceRAvKXfJHRzuHvJ 6nbjpVmHbEC8W90MlbJUDAAqqMI2S7x1kNPqPfW66UFsR5UJ0Zztne5MYmKkJBuj3ky3qTr+ESE98 jPT47D2Wr84u3SHsw16K683UOjQ2YZ7QaNwaTvyjnNNz+7kZHAAndU3rnHuC7LrOHGQeFtq3tw3I5 3+muvjpQ==; Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdx-00Cifc-0g; Thu, 01 Apr 2021 15:54:01 +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 19/20] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG Date: Thu, 1 Apr 2021 17:52:55 +0200 Message-Id: <20210401155256.298656-20-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use an explicit set_pgtable_quirks method instead that just passes the actual quirk bitmask instead. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Acked-by: Li Yang --- 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 f17c54a76ef6f1..3c6adcdb201bb8 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 d191e4a399785d..bf7dcd2fc08643 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2701,6 +2701,17 @@ 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 4e1051dd8d9946..4280be90a27956 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(struct iommu_domain *domain); @@ -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 Thu Apr 1 15:52:56 2021 Content-Type: text/plain; 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Received: from [2001:4bb8:180:7517:83e4:a809:b0aa:ca74] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRzdz-00Cifp-Mc; Thu, 01 Apr 2021 15:54:04 +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 20/20] iommu: remove iommu_domain_{get,set}_attr Date: Thu, 1 Apr 2021 17:52:56 +0200 Message-Id: <20210401155256.298656-21-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210401155256.298656-1-hch@lst.de> References: <20210401155256.298656-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 bf7dcd2fc08643..d19944733b9dac 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2665,32 +2665,6 @@ 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 4280be90a27956..1a905446dc4ca1 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) {