From: Tom Murphy via iommu <iommu@lists.linux-foundation.org>
To: iommu@lists.linux-foundation.org
Cc: Heiko Stuebner <heiko@sntech.de>,
kvm@vger.kernel.org, Will Deacon <will.deacon@arm.com>,
David Brown <david.brown@linaro.org>,
Thierry Reding <thierry.reding@gmail.com>,
linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
Jonathan Hunter <jonathanh@nvidia.com>,
linux-rockchip@lists.infradead.org, Kukjin Kim <kgene@kernel.org>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Andy Gross <andy.gross@linaro.org>,
linux-tegra@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
linux-arm-msm@vger.kernel.org,
Alex Williamson <alex.williamson@redhat.com>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Tom Murphy <tmurphy@arista.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org, murphyt7@tcd.ie,
David Woodhouse <dwmw2@infradead.org>
Subject: [RFC 5/7] iommu/dma-iommu: add wrapper for iommu_dma_free_cpu_cached_iovas
Date: Sat, 4 May 2019 14:23:21 +0100 [thread overview]
Message-ID: <20190504132327.27041-6-tmurphy@arista.com> (raw)
In-Reply-To: <20190504132327.27041-1-tmurphy@arista.com>
Add a wrapper for iommu_dma_free_cpu_cached_iovas in the dma-iommu api
path to help with the intel-iommu driver conversion to the dma-iommu api
path
Signed-off-by: Tom Murphy <tmurphy@arista.com>
---
drivers/iommu/dma-iommu.c | 9 +++++++++
include/linux/dma-iommu.h | 3 +++
2 files changed, 12 insertions(+)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 82ba500886b4..1415b6f068c1 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -49,6 +49,15 @@ 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 3fc76918e9bf..1e5bee193feb 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -25,6 +25,9 @@ void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size);
void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg);
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;
--
2.17.1
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next prev parent reply other threads:[~2019-05-04 13:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-04 13:23 [RFC 0/7] Convert the Intel iommu driver to the dma-ops api Tom Murphy via iommu
2019-05-04 13:23 ` [RFC 1/7] iommu/vt-d: Set the dma_ops per device so we can remove the iommu_no_mapping code Tom Murphy via iommu
2019-05-06 1:42 ` Lu Baolu
2019-05-06 15:27 ` Tom Murphy via iommu
2019-05-04 13:23 ` [RFC 2/7] iommu/vt-d: Remove iova handling code from non-dma ops path Tom Murphy via iommu
2019-05-05 1:19 ` Lu Baolu
2019-05-05 1:22 ` Lu Baolu
2019-05-04 13:23 ` [RFC 3/7] iommu: improve iommu iotlb flushing Tom Murphy via iommu
2019-05-04 13:23 ` [RFC 4/7] iommu/dma-iommu: Handle freelists in the dma-iommu api path Tom Murphy via iommu
2019-05-04 13:23 ` Tom Murphy via iommu [this message]
2019-05-04 13:23 ` [RFC 6/7] iommu/vt-d: convert the intel iommu driver to the dma-iommu ops api Tom Murphy via iommu
2019-05-05 2:37 ` Lu Baolu
2019-05-05 17:03 ` Tom Murphy via iommu
2019-05-06 1:34 ` Lu Baolu
2019-05-04 13:23 ` [RFC 7/7] iommu/vt-d: Always set DMA_PTE_READ if the iommu doens't support zero length reads Tom Murphy via iommu
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