[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-arm] [RFC v6 7/9] target/arm/kvm: Translate the MSI doorbell in kv
From: |
Eric Auger |
Subject: |
[Qemu-arm] [RFC v6 7/9] target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route |
Date: |
Fri, 11 Aug 2017 16:22:32 +0200 |
In case the MSI is translated by an IOMMU we need to fixup the
MSI route with the translated address.
Signed-off-by: Eric Auger <address@hidden>
---
v5 -> v6:
- use IOMMUMemoryRegionClass API
It is still unclear to me if we need to register an IOMMUNotifier
to handle any change in the MSI doorbell which would occur behind
the scene and would not lead to any call to kvm_arch_fixup_msi_route().
---
target/arm/kvm.c | 27 +++++++++++++++++++++++++++
target/arm/trace-events | 3 +++
2 files changed, 30 insertions(+)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 7c17f0d..a2fa948 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -20,8 +20,13 @@
#include "sysemu/kvm.h"
#include "kvm_arm.h"
#include "cpu.h"
+#include "trace.h"
#include "internals.h"
#include "hw/arm/arm.h"
+#include "hw/pci/pci.h"
+#include "hw/pci/msi.h"
+#include "hw/arm/smmu-common.h"
+#include "hw/arm/smmuv3.h"
#include "exec/memattrs.h"
#include "exec/address-spaces.h"
#include "hw/boards.h"
@@ -662,6 +667,28 @@ int kvm_arm_vgic_probe(void)
int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
uint64_t address, uint32_t data, PCIDevice *dev)
{
+ AddressSpace *as = pci_device_iommu_address_space(dev);
+ IOMMUMemoryRegionClass *imrc;
+ IOMMUTLBEntry entry;
+ SMMUDevice *sdev;
+
+ if (as == &address_space_memory) {
+ return 0;
+ }
+
+ /* MSI doorbell address is translated by an IOMMU */
+ sdev = container_of(as, SMMUDevice, as);
+ imrc = IOMMU_MEMORY_REGION_GET_CLASS(&sdev->iommu);
+
+ entry = imrc->translate(&sdev->iommu, address, IOMMU_WO);
+
+ route->u.msi.address_lo = entry.translated_addr;
+ route->u.msi.address_hi = entry.translated_addr >> 32;
+
+ trace_kvm_arm_fixup_msi_route(address, sdev->devfn,
+ sdev->iommu.parent_obj.name,
+ entry.translated_addr);
+
return 0;
}
diff --git a/target/arm/trace-events b/target/arm/trace-events
index 9e37131..8b3c220 100644
--- a/target/arm/trace-events
+++ b/target/arm/trace-events
@@ -8,3 +8,6 @@ arm_gt_tval_write(int timer, uint64_t value) "gt_tval_write:
timer %d value 0x%"
arm_gt_ctl_write(int timer, uint64_t value) "gt_ctl_write: timer %d value 0x%"
PRIx64
arm_gt_imask_toggle(int timer, int irqstate) "gt_ctl_write: timer %d IMASK
toggle, new irqstate %d"
arm_gt_cntvoff_write(uint64_t value) "gt_cntvoff_write: value 0x%" PRIx64
+
+# target/arm/kvm.c
+kvm_arm_fixup_msi_route(uint64_t iova, uint32_t devid, const char *name,
uint64_t gpa) "MSI addr = 0x%"PRIx64" is translated for devfn=%d through %s
into 0x%"PRIx64
--
2.5.5
- [Qemu-arm] [RFC v6 0/9] ARM SMMUv3 Emulation Support, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 1/9] hw/arm/smmu-common: smmu base class, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 2/9] hw/arm/smmuv3: smmuv3 emulation model, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 3/9] hw/arm/virt: Add SMMUv3 to the virt board, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 4/9] hw/arm/virt: Add 2.11 machine type, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 5/9] hw/arm/virt-acpi-build: Add smmuv3 node in IORT table, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 6/9] hw/arm/virt: Add tlbi-on-map property to the smmuv3 node, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 7/9] target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route,
Eric Auger <=
- [Qemu-arm] [RFC v6 8/9] hw/arm/smmuv3: VFIO integration, Eric Auger, 2017/08/11
- [Qemu-arm] [RFC v6 9/9] hw/arm/virt-acpi-build: Use the ACPI_IORT_SMMU_V3_CACHING_MODE model, Eric Auger, 2017/08/11
- Re: [Qemu-arm] [Qemu-devel] [RFC v6 0/9] ARM SMMUv3 Emulation Support, no-reply, 2017/08/11