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[23.128.96.18]) by mx.google.com with ESMTP id 39si5406853edr.435.2020.09.27.00.10.58; Sun, 27 Sep 2020 00:11:20 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729713AbgI0HJz (ORCPT + 99 others); Sun, 27 Sep 2020 03:09:55 -0400 Received: from mga17.intel.com ([192.55.52.151]:4965 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727263AbgI0HJz (ORCPT ); Sun, 27 Sep 2020 03:09:55 -0400 IronPort-SDR: /6gEHLnxUKZ3rRmSLuefsF8zgskBk5Ig3J9wt3ml79DogymGUtjGsF2UwmKLlhi/CbJg4GsnLd Qn3u3fbzH6mA== X-IronPort-AV: E=McAfee;i="6000,8403,9756"; a="141863651" X-IronPort-AV: E=Sophos;i="5.77,309,1596524400"; d="scan'208";a="141863651" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2020 23:40:54 -0700 IronPort-SDR: r5UspS/PTI1HWmhhCDNu64H/SAJpqNXDdFZwDTieAamkxBopgRE31drz4xt9nIC5hd3CO99ZZ4 s1Pnszlj9zng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,309,1596524400"; d="scan'208";a="349457821" Received: from allen-box.sh.intel.com ([10.239.159.139]) by FMSMGA003.fm.intel.com with ESMTP; 26 Sep 2020 23:40:52 -0700 From: Lu Baolu To: Joerg Roedel , Tom Murphy , David Woodhouse , Christoph Hellwig Cc: Ashok Raj , Tvrtko Ursulin , Intel-gfx@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH v4 2/7] iommu: Add iommu_dma_free_cpu_cached_iovas() Date: Sun, 27 Sep 2020 14:34:32 +0800 Message-Id: <20200927063437.13988-3-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200927063437.13988-1-baolu.lu@linux.intel.com> References: <20200927063437.13988-1-baolu.lu@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Murphy Add a iommu_dma_free_cpu_cached_iovas function to allow drivers which use the dma-iommu ops to free cached cpu iovas. Signed-off-by: Tom Murphy Signed-off-by: Lu Baolu --- drivers/iommu/dma-iommu.c | 9 +++++++++ include/linux/dma-iommu.h | 8 ++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 1b8ef3a2cbc3..fb84cfa83703 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -50,6 +50,15 @@ struct iommu_dma_cookie { struct iommu_domain *fq_domain; }; +void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain) +{ + struct iommu_dma_cookie *cookie = domain->iova_cookie; + struct iova_domain *iovad = &cookie->iovad; + + free_cpu_cached_iovas(cpu, iovad); +} + static void iommu_dma_entry_dtor(unsigned long data) { struct page *freelist = (struct page *)data; diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h index 2112f21f73d8..706b68d1359b 100644 --- a/include/linux/dma-iommu.h +++ b/include/linux/dma-iommu.h @@ -37,6 +37,9 @@ void iommu_dma_compose_msi_msg(struct msi_desc *desc, void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list); +void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain); + #else /* CONFIG_IOMMU_DMA */ struct iommu_domain; @@ -78,5 +81,10 @@ static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_he { } +static inline void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain) +{ +} + #endif /* CONFIG_IOMMU_DMA */ #endif /* __DMA_IOMMU_H */ -- 2.17.1