From patchwork Tue Mar 16 15:38:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 401796 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE03DC433E0 for ; Tue, 16 Mar 2021 15:49:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FA50650DC for ; Tue, 16 Mar 2021 15:49:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230442AbhCPPsa (ORCPT ); Tue, 16 Mar 2021 11:48:30 -0400 Received: from casper.infradead.org ([90.155.50.34]:39124 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229871AbhCPPsU (ORCPT ); Tue, 16 Mar 2021 11:48:20 -0400 X-Greylist: delayed 420 seconds by postgrey-1.27 at vger.kernel.org; Tue, 16 Mar 2021 11:48:19 EDT DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=LLNJmtrL5+kpO2dQE+ielS+d0lLhdfp+H3xCSPPpVb0=; b=NQH+p75+UkY+Slklsw50TsSal8 XmuMW4yOAath99mfZ3smBVpp3g2VkCLIjlsIqxkpAAE+GVrQ1n2Ev2dcdfyXxAvQTGl2NAaxJSrPu d2j5jiVWGEUh5JXSnqfj4PBVnj8gX8LCd26iBJTG0NWbhq/dhjy3tSoPJiT4l4rbQj4XwWtUzeDCk usv40e+yv2Zi9vhNdat+B0O2M0lKFGrBWFKptnMSYw4JYUppqnBFeyEHVyqN/7zCqK9scgw46fqUj x8e2cTmH8cfv4vOtF8RG8pLdy3kpjaffkS/E5Kl338LbBJ1S0+1nCr48pn/2yN7Il2/CiM6DKSotX 2JmXQOgA==; Received: from 089144199244.atnat0008.highway.a1.net ([89.144.199.244] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lMBuw-000G67-Mp; Tue, 16 Mar 2021 15:47:42 +0000 From: Christoph Hellwig To: Joerg Roedel , Will Deacon , Li Yang Cc: Michael Ellerman , David Woodhouse , Lu Baolu , linuxppc-dev@lists.ozlabs.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Subject: [PATCH 03/18] iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRY Date: Tue, 16 Mar 2021 16:38:09 +0100 Message-Id: <20210316153825.135976-4-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210316153825.135976-1-hch@lst.de> References: <20210316153825.135976-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The default geometry is the same as the one set by qman_port given that FSL_PAMU depends on having 64-bit physical and thus DMA addresses. Remove the support to update the geometry and remove the now pointless geom_size field. Signed-off-by: Christoph Hellwig Acked-by: Li Yang --- 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) {