From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 05/20] iommu/amd: Implement apply_dm_region call-back Date: Fri, 8 Jul 2016 13:44:56 +0200 Message-ID: <1467978311-28322-6-git-send-email-joro@8bytes.org> References: <1467978311-28322-1-git-send-email-joro@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1467978311-28322-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: Vincent.Wan-5C7GfCeVMHo@public.gmane.org, Joerg Roedel , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel It is used to reserve the dm-regions in the iova-tree. Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 4b8b9ee..5ea5679 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3379,6 +3379,20 @@ static void amd_iommu_put_dm_regions(struct device *dev, kfree(entry); } +static void amd_iommu_apply_dm_region(struct device *dev, + struct iommu_domain *domain, + struct iommu_dm_region *region) +{ + struct protection_domain *pdomain = to_pdomain(domain); + struct dma_ops_domain *dma_dom = pdomain->priv; + unsigned long start, end; + + start = IOVA_PFN(region->start); + end = IOVA_PFN(region->start + region->length); + + WARN_ON_ONCE(reserve_iova(&dma_dom->iovad, start, end) == NULL); +} + static const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, .domain_alloc = amd_iommu_domain_alloc, @@ -3394,6 +3408,7 @@ static const struct iommu_ops amd_iommu_ops = { .device_group = amd_iommu_device_group, .get_dm_regions = amd_iommu_get_dm_regions, .put_dm_regions = amd_iommu_put_dm_regions, + .apply_dm_region = amd_iommu_apply_dm_region, .pgsize_bitmap = AMD_IOMMU_PGSIZES, }; -- 1.9.1