From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00043ECE596 for ; Wed, 9 Oct 2019 08:26:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D587621721 for ; Wed, 9 Oct 2019 08:26:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730218AbfJII0x (ORCPT ); Wed, 9 Oct 2019 04:26:53 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:30789 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729592AbfJII0x (ORCPT ); Wed, 9 Oct 2019 04:26:53 -0400 X-IronPort-AV: E=Sophos;i="5.67,273,1566831600"; d="scan'208";a="28451943" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 09 Oct 2019 17:26:50 +0900 Received: from localhost.localdomain (unknown [10.166.17.210]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 5B1BE41A3B1F; Wed, 9 Oct 2019 17:26:50 +0900 (JST) From: Yoshihiro Shimoda To: joro@8bytes.org Cc: iommu@lists.linux-foundation.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH 3/3] iommu/ipmmu-vmsa: Add utlb_offset_base Date: Wed, 9 Oct 2019 17:26:49 +0900 Message-Id: <1570609609-1332-4-git-send-email-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1570609609-1332-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> References: <1570609609-1332-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Since we will have changed memory mapping of the IPMMU in the future, this patch adds a utlb_offset_base into struct ipmmu_features for IMUCTR and IMUASID registers. No behavior change. Signed-off-by: Yoshihiro Shimoda --- drivers/iommu/ipmmu-vmsa.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 76fb250..bc00e58 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -52,6 +52,7 @@ struct ipmmu_features { bool cache_snoop; u32 ctx_offset_base; u32 ctx_offset_stride; + u32 utlb_offset_base; }; struct ipmmu_vmsa_device { @@ -285,6 +286,11 @@ static void ipmmu_ctx_write_all(struct ipmmu_vmsa_domain *domain, ipmmu_ctx_write_root(domain, reg, data); } +static u32 ipmmu_utlb_reg(struct ipmmu_vmsa_device *mmu, unsigned int reg) +{ + return mmu->features->utlb_offset_base + reg; +} + /* ----------------------------------------------------------------------------- * TLB and microTLB Management */ @@ -330,9 +336,9 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain, */ /* TODO: What should we set the ASID to ? */ - ipmmu_write(mmu, IMUASID(utlb), 0); + ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUASID(utlb)), 0); /* TODO: Do we need to flush the microTLB ? */ - ipmmu_write(mmu, IMUCTR(utlb), + ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUCTR(utlb)), IMUCTR_TTSEL_MMU(domain->context_id) | IMUCTR_FLUSH | IMUCTR_MMUEN); mmu->utlb_ctx[utlb] = domain->context_id; @@ -346,7 +352,7 @@ static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain, { struct ipmmu_vmsa_device *mmu = domain->mmu; - ipmmu_write(mmu, IMUCTR(utlb), 0); + ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUCTR(utlb)), 0); mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID; } @@ -995,6 +1001,7 @@ static const struct ipmmu_features ipmmu_features_default = { .cache_snoop = true, .ctx_offset_base = 0, .ctx_offset_stride = 0x40, + .utlb_offset_base = 0, }; static const struct ipmmu_features ipmmu_features_rcar_gen3 = { @@ -1008,6 +1015,7 @@ static const struct ipmmu_features ipmmu_features_rcar_gen3 = { .cache_snoop = false, .ctx_offset_base = 0, .ctx_offset_stride = 0x40, + .utlb_offset_base = 0, }; static const struct of_device_id ipmmu_of_ids[] = { -- 2.7.4