From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Liu, Yi L" Subject: [RFC PATCH 11/20] intel_iommu: provide iommu_ops->record_device Date: Wed, 26 Apr 2017 18:06:41 +0800 Message-ID: <1493201210-14357-12-git-send-email-yi.l.liu@linux.intel.com> References: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> Return-path: In-Reply-To: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> Sender: kvm-owner@vger.kernel.org To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Cc: kvm@vger.kernel.org, jasowang@redhat.com, iommu@lists.linux-foundation.org, kevin.tian@intel.com, ashok.raj@intel.com, jacob.jun.pan@intel.com, tianyu.lan@intel.com, yi.l.liu@intel.com, jean-philippe.brucker@arm.com, "Liu, Yi L" List-Id: iommu@lists.linux-foundation.org This patch provides iommu_ops->record_device implementation for intel_iommu. It records the host sid in the IntelIOMMUNotifierNode for further virtualization usage. e.g. guest sid -> host sid translation during propagating 1st level cache invalidation from guest to host. Signed-off-by: Liu, Yi L --- hw/i386/intel_iommu.c | 19 +++++++++++++++++++ include/hw/i386/intel_iommu.h | 1 + 2 files changed, 20 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index ba1e7eb..0c412d2 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2407,6 +2407,24 @@ static void vtd_iommu_notify_flag_changed(MemoryRegion *iommu, } } +static void vtd_iommu_record_device(MemoryRegion *iommu, + void *device_info) +{ + VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu); + IntelIOMMUState *s = vtd_as->iommu_state; + IntelIOMMUNotifierNode *node = NULL; + IntelIOMMUNotifierNode *next_node = NULL; + PCIHostDeviceAddress *host = (PCIHostDeviceAddress *) device_info; + + QLIST_FOREACH_SAFE(node, &s->notifiers_list, next, next_node) { + if (node->vtd_as == vtd_as) { + node->host_sid = ((host->bus & 0xffUL) << 8) + | ((host->slot & 0x1f) << 3) + | (host->function & 0x7); + } + } +} + static const VMStateDescription vtd_vmstate = { .name = "iommu-intel", .version_id = 1, @@ -2940,6 +2958,7 @@ static void vtd_init(IntelIOMMUState *s) s->iommu_ops.translate = vtd_iommu_translate; s->iommu_ops.notify_flag_changed = vtd_iommu_notify_flag_changed; s->iommu_ops.replay = vtd_iommu_replay; + s->iommu_ops.record_device = vtd_iommu_record_device; s->root = 0; s->root_extended = false; s->dmar_enabled = false; diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 8981615..a4ce5c3 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -252,6 +252,7 @@ struct VTD_MSIMessage { struct IntelIOMMUNotifierNode { VTDAddressSpace *vtd_as; + uint16_t host_sid; QLIST_ENTRY(IntelIOMMUNotifierNode) next; }; -- 1.9.1