From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51951) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fEeJL-0005px-0H for qemu-devel@nongnu.org; Fri, 04 May 2018 13:16:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fEeJJ-0000nr-TI for qemu-devel@nongnu.org; Fri, 04 May 2018 13:15:58 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:41496) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fEeJJ-0000ld-KO for qemu-devel@nongnu.org; Fri, 04 May 2018 13:15:57 -0400 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1fEeJI-00038r-Ij for qemu-devel@nongnu.org; Fri, 04 May 2018 18:15:56 +0100 From: Peter Maydell Date: Fri, 4 May 2018 18:15:37 +0100 Message-Id: <20180504171540.25813-22-peter.maydell@linaro.org> In-Reply-To: <20180504171540.25813-1-peter.maydell@linaro.org> References: <20180504171540.25813-1-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 21/24] target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Eric Auger 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 Signed-off-by: Bharat Bhushan Message-id: 1524665762-31355-12-git-send-email-eric.auger@redhat.com Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target/arm/kvm.c | 38 +++++++++++++++++++++++++++++++++++++- target/arm/trace-events | 3 +++ 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index ecc39ac295..5141d0adc5 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -20,8 +20,10 @@ #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 "exec/memattrs.h" #include "exec/address-spaces.h" #include "hw/boards.h" @@ -649,7 +651,41 @@ 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) { - return 0; + AddressSpace *as = pci_device_iommu_address_space(dev); + hwaddr xlat, len, doorbell_gpa; + MemoryRegionSection mrs; + MemoryRegion *mr; + int ret = 1; + + if (as == &address_space_memory) { + return 0; + } + + /* MSI doorbell address is translated by an IOMMU */ + + rcu_read_lock(); + mr = address_space_translate(as, address, &xlat, &len, true); + if (!mr) { + goto unlock; + } + mrs = memory_region_find(mr, xlat, 1); + if (!mrs.mr) { + goto unlock; + } + + doorbell_gpa = mrs.offset_within_address_space; + memory_region_unref(mrs.mr); + + route->u.msi.address_lo = doorbell_gpa; + route->u.msi.address_hi = doorbell_gpa >> 32; + + trace_kvm_arm_fixup_msi_route(address, doorbell_gpa); + + ret = 0; + +unlock: + rcu_read_unlock(); + return ret; } int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, diff --git a/target/arm/trace-events b/target/arm/trace-events index 9e37131115..6b759f9d4f 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, uint64_t gpa) "MSI iova = 0x%"PRIx64" is translated into 0x%"PRIx64 -- 2.17.0