From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48339) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay9xM-0005Ln-Ak for qemu-devel@nongnu.org; Wed, 04 May 2016 23:28:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ay9xA-0008HT-6O for qemu-devel@nongnu.org; Wed, 04 May 2016 23:27:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45632) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay9x9-0008De-VI for qemu-devel@nongnu.org; Wed, 04 May 2016 23:27:52 -0400 From: Peter Xu Date: Thu, 5 May 2016 11:25:56 +0800 Message-Id: <1462418761-12714-22-git-send-email-peterx@redhat.com> In-Reply-To: <1462418761-12714-1-git-send-email-peterx@redhat.com> References: <1462418761-12714-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH v6 21/26] x86-iommu: introduce parent class List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: imammedo@redhat.com, rth@twiddle.net, ehabkost@redhat.com, jasowang@redhat.com, marcel@redhat.com, mst@redhat.com, pbonzini@redhat.com, jan.kiszka@web.de, rkrcmar@redhat.com, alex.williamson@redhat.com, wexu@redhat.com, davidkiarie4@gmail.com, peterx@redhat.com Introducing parent class for intel-iommu devices named "x86-iommu". This is preparation work to abstract shared functionalities out from Intel and AMD IOMMUs. Currently, only the parent class is introduced. It does nothing yet. Signed-off-by: Peter Xu --- hw/i386/Makefile.objs | 2 +- hw/i386/intel_iommu.c | 4 ++-- hw/i386/x86-iommu.c | 42 ++++++++++++++++++++++++++++++++++++++++++ hw/pci-host/q35.c | 2 +- include/hw/i386/intel_iommu.h | 3 ++- include/hw/i386/x86-iommu.h | 35 +++++++++++++++++++++++++++++++++++ 6 files changed, 83 insertions(+), 5 deletions(-) create mode 100644 hw/i386/x86-iommu.c create mode 100644 include/hw/i386/x86-iommu.h diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs index b52d5b8..90e94ff 100644 --- a/hw/i386/Makefile.objs +++ b/hw/i386/Makefile.objs @@ -2,7 +2,7 @@ obj-$(CONFIG_KVM) += kvm/ obj-y += multiboot.o obj-y += pc.o pc_piix.o pc_q35.o obj-y += pc_sysfw.o -obj-y += intel_iommu.o +obj-y += x86-iommu.o intel_iommu.o obj-$(CONFIG_XEN) += ../xenpv/ xen/ obj-y += kvmvapic.o diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index b8666b8..51ad0b5 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2343,7 +2343,7 @@ IntelIOMMUState *vtd_iommu_get(void) bool ambiguous = false; Object *intel_iommu = NULL; - intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE, + intel_iommu = object_resolve_path_type("", TYPE_X86_IOMMU_DEVICE, &ambiguous); if (ambiguous) intel_iommu = NULL; @@ -2479,7 +2479,7 @@ static void vtd_class_init(ObjectClass *klass, void *data) static const TypeInfo vtd_info = { .name = TYPE_INTEL_IOMMU_DEVICE, - .parent = TYPE_SYS_BUS_DEVICE, + .parent = TYPE_X86_IOMMU_DEVICE, .instance_size = sizeof(IntelIOMMUState), .class_init = vtd_class_init, }; diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c new file mode 100644 index 0000000..7338f98 --- /dev/null +++ b/hw/i386/x86-iommu.c @@ -0,0 +1,42 @@ +/* + * QEMU emulation of common X86 IOMMU + * + * Copyright (C) 2016 Peter Xu, Red Hat + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "hw/boards.h" +#include "hw/i386/x86-iommu.h" + +static void x86_iommu_class_init(ObjectClass *klass, void *data) +{ +} + +static const TypeInfo x86_iommu_info = { + .name = TYPE_X86_IOMMU_DEVICE, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(X86IOMMUState), + .class_init = x86_iommu_class_init, + .abstract = true, +}; + +static void x86_iommu_register_types(void) +{ + type_register_static(&x86_iommu_info); +} + +type_init(x86_iommu_register_types) diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c index d32c123..fe19eff 100644 --- a/hw/pci-host/q35.c +++ b/hw/pci-host/q35.c @@ -441,7 +441,7 @@ static void mch_init_dmar(MCHPCIState *mch) PCIBus *pci_bus = PCI_BUS(qdev_get_parent_bus(DEVICE(mch))); mch->iommu = INTEL_IOMMU_DEVICE(qdev_create(NULL, TYPE_INTEL_IOMMU_DEVICE)); - object_property_add_child(OBJECT(mch), "intel-iommu", + object_property_add_child(OBJECT(mch), "x86-iommu", OBJECT(mch->iommu), NULL); qdev_init_nofail(DEVICE(mch->iommu)); sysbus_mmio_map(SYS_BUS_DEVICE(mch->iommu), 0, Q35_HOST_BRIDGE_IOMMU_ADDR); diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 0886cb7..3f4a46e 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -26,6 +26,7 @@ #include "hw/i386/ioapic.h" #include "hw/pci/msi.h" #include "hw/sysbus.h" +#include "hw/i386/x86-iommu.h" #define TYPE_INTEL_IOMMU_DEVICE "intel-iommu" #define INTEL_IOMMU_DEVICE(obj) \ @@ -240,7 +241,7 @@ typedef struct VTD_IEC_Notifier VTD_IEC_Notifier; /* The iommu (DMAR) device state struct */ struct IntelIOMMUState { - SysBusDevice busdev; + X86IOMMUState x86_iommu; MemoryRegion csrmem; uint8_t csr[DMAR_REG_SIZE]; /* register values */ uint8_t wmask[DMAR_REG_SIZE]; /* R/W bytes */ diff --git a/include/hw/i386/x86-iommu.h b/include/hw/i386/x86-iommu.h new file mode 100644 index 0000000..3987755 --- /dev/null +++ b/include/hw/i386/x86-iommu.h @@ -0,0 +1,35 @@ +/* + * Common IOMMU interface for X86 platform + * + * Copyright (C) 2016 Peter Xu, Red Hat + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef IOMMU_COMMON_H +#define IOMMU_COMMON_H + +#include "hw/sysbus.h" + +#define TYPE_X86_IOMMU_DEVICE ("x86-iommu") +#define X86_IOMMU_DEVICE(obj) \ + OBJECT_CHECK(X86IOMMUState, (obj), TYPE_X86_IOMMU_DEVICE) + +typedef struct X86IOMMUState X86IOMMUState; + +struct X86IOMMUState { + SysBusDevice busdev; +}; + +#endif -- 2.4.11