From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40551) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUwJT-0003bu-9e for qemu-devel@nongnu.org; Sun, 14 Feb 2016 08:02:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aUwJQ-0007TO-3D for qemu-devel@nongnu.org; Sun, 14 Feb 2016 08:02:07 -0500 Received: from mail-wm0-x22e.google.com ([2a00:1450:400c:c09::22e]:33671) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUwJP-0007TK-PJ for qemu-devel@nongnu.org; Sun, 14 Feb 2016 08:02:04 -0500 Received: by mail-wm0-x22e.google.com with SMTP id g62so117269271wme.0 for ; Sun, 14 Feb 2016 05:02:03 -0800 (PST) References: <1453130745-25793-1-git-send-email-davidkiarie4@gmail.com> <1453130745-25793-5-git-send-email-davidkiarie4@gmail.com> From: Marcel Apfelbaum Message-ID: <56C07AC8.3090406@gmail.com> Date: Sun, 14 Feb 2016 15:02:00 +0200 MIME-Version: 1.0 In-Reply-To: <1453130745-25793-5-git-send-email-davidkiarie4@gmail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [V4 4/4] hw/pci-host: Emulate AMD IO MMU Reply-To: marcel@redhat.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: David Kiarie , qemu-devel@nongnu.org Cc: marcel@redhat.com, crosthwaitepeter@gmail.com, jan.kiszka@web.de, valentine.sinitsyn@gmail.com, mst@redhat.com On 01/18/2016 05:25 PM, David Kiarie wrote: > Support AMD IO MMU emulation in q35 and piix chipsets > > Signed-off-by: David Kiarie > --- > hw/pci-host/piix.c | 11 +++++++++++ > hw/pci-host/q35.c | 14 ++++++++++++-- > 2 files changed, 23 insertions(+), 2 deletions(-) > > diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c > index b0d7e31..3ba245d 100644 > --- a/hw/pci-host/piix.c > +++ b/hw/pci-host/piix.c > @@ -35,6 +35,7 @@ > #include "hw/i386/ioapic.h" > #include "qapi/visitor.h" > #include "qemu/error-report.h" > +#include "hw/i386/amd_iommu.h" > > /* > * I440FX chipset data sheet. > @@ -297,6 +298,16 @@ static void i440fx_pcihost_realize(DeviceState *dev, Error **errp) > > sysbus_add_io(sbd, 0xcfc, &s->data_mem); > sysbus_init_ioports(sbd, 0xcfc, 4); > + > + /* AMD IOMMU (AMD-Vi) */ > + if (g_strcmp0(object_property_get_str(qdev_get_machine(), "iommu", NULL), > + "amd") == 0) { Hi, Minor comments, here you can use the same qdev_get_machine())->iommu as used below and the same AMD_IOMMU_STR instead of "amd". Do I understand correctly that we can have an AMD IOMMU working on an i440fx machine (non PCI Express)? Thanks, Marcel > + AMDIOMMUState *iommu_state; > + PCIDevice *iommu; > + iommu = pci_create_simple(s->bus, 0x20, TYPE_AMD_IOMMU_DEVICE); > + iommu_state = AMD_IOMMU_DEVICE(iommu); > + pci_setup_iommu(s->bus, bridge_host_amd_iommu, iommu_state); > + } > } > > static void i440fx_realize(PCIDevice *dev, Error **errp) > diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c > index 1fb4707..0c60e3c 100644 > --- a/hw/pci-host/q35.c > +++ b/hw/pci-host/q35.c > @@ -30,6 +30,7 @@ > #include "hw/hw.h" > #include "hw/pci-host/q35.h" > #include "qapi/visitor.h" > +#include "hw/i386/amd_iommu.h" > > /**************************************************************************** > * Q35 host > @@ -505,9 +506,18 @@ static void mch_realize(PCIDevice *d, Error **errp) > mch->pci_address_space, &mch->pam_regions[i+1], > PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, PAM_EXPAN_SIZE); > } > - /* Intel IOMMU (VT-d) */ > - if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) { > + > + if (g_strcmp0(MACHINE(qdev_get_machine())->iommu, INTEL_IOMMU_STR) == 0) { > + /* Intel IOMMU (VT-d) */ > mch_init_dmar(mch); > + } else if (g_strcmp0(MACHINE(qdev_get_machine())->iommu, AMD_IOMMU_STR) > + == 0) { > + AMDIOMMUState *iommu_state; > + PCIDevice *iommu; > + PCIBus *bus = PCI_BUS(qdev_get_parent_bus(DEVICE(mch))); > + iommu = pci_create_simple(bus, 0x20, TYPE_AMD_IOMMU_DEVICE); > + iommu_state = AMD_IOMMU_DEVICE(iommu); > + pci_setup_iommu(bus, bridge_host_amd_iommu, iommu_state); > } > } > >