From patchwork Thu Apr 1 15:52:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12178809 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E543EC43460 for ; Thu, 1 Apr 2021 17:56:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C3BED60FF3 for ; Thu, 1 Apr 2021 17:56:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236574AbhDAR4g (ORCPT ); Thu, 1 Apr 2021 13:56:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237274AbhDARvM (ORCPT ); Thu, 1 Apr 2021 13:51:12 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F16FC02D577; Thu, 1 Apr 2021 08:53:55 -0700 (PDT) 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=6DcxZsiPepfGUgEn3X4Pytv10TvLFSsigpRcj4GEp8w=; b=uRAAEOxv+dvr1q453virD2Gtg2 RxsviVpQmrYjUOesDnzmffH1s4f5/g/ydd6GmWzsNFgEAhk4MwZz160FCUG54cbCwoO7u9CKV2e6H oA/2q/iPNV0v3FgBw4/fS+dY5iILltmFPA24gZPu1D2JMj/qR3IqQRU6Y3/mqHpy3MK6b3FqwnQMT ZIKQX7drOizNIcl/RvwRzhCvsTPnqRZzU1azHpSJ2cwTryCvxHonansIz6pnu26oZ3I9+tYVkzdGQ Ub7tBWI6c7Tf08rokSakQpzuRx3oyNbi65wV30f87Ope5E1zKUA3FQEE9GQ5dk0QmbFmXxQyTxWUb Q2It65xg==; 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 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.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);