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130 lines
4.2 KiB
130 lines
4.2 KiB
From 7f392385d1b865904eae4b6681e3e7a87eb3af3d Mon Sep 17 00:00:00 2001
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From: Zhenzhong Duan <zhenzhong.duan@intel.com>
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Date: Thu, 2 Nov 2023 15:12:27 +0800
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Subject: [PATCH 002/101] vfio: Introduce base object for VFIOContainer and
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targeted interface
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Eric Auger <eric.auger@redhat.com>
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RH-MergeRequest: 211: IOMMUFD backend backport
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RH-Jira: RHEL-19302 RHEL-21057
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RH-Acked-by: Cédric Le Goater <clg@redhat.com>
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RH-Acked-by: Sebastian Ott <sebott@redhat.com>
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RH-Commit: [1/67] e63af50c2cb94f286b2d91f58c2d19dd862e019d (eauger1/centos-qemu-kvm)
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Introduce a dumb VFIOContainerBase object and its targeted interface.
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This is willingly not a QOM object because we don't want it to be
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visible from the user interface. The VFIOContainerBase will be
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smoothly populated in subsequent patches as well as interfaces.
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No functional change intended.
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Signed-off-by: Yi Liu <yi.l.liu@intel.com>
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Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
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Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
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Reviewed-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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(cherry picked from commit f61dddd73232e3d82d560d1e1bca120446021f2f)
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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---
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include/hw/vfio/vfio-common.h | 8 ++---
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include/hw/vfio/vfio-container-base.h | 50 +++++++++++++++++++++++++++
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2 files changed, 52 insertions(+), 6 deletions(-)
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create mode 100644 include/hw/vfio/vfio-container-base.h
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diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
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index a4a22accb9..586d153c12 100644
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--- a/include/hw/vfio/vfio-common.h
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+++ b/include/hw/vfio/vfio-common.h
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@@ -30,6 +30,7 @@
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#include <linux/vfio.h>
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#endif
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#include "sysemu/sysemu.h"
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+#include "hw/vfio/vfio-container-base.h"
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#define VFIO_MSG_PREFIX "vfio %s: "
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@@ -81,6 +82,7 @@ typedef struct VFIOAddressSpace {
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struct VFIOGroup;
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typedef struct VFIOContainer {
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+ VFIOContainerBase bcontainer;
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VFIOAddressSpace *space;
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int fd; /* /dev/vfio/vfio, empowered by the attached groups */
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MemoryListener listener;
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@@ -201,12 +203,6 @@ typedef struct VFIODisplay {
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} dmabuf;
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} VFIODisplay;
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-typedef struct {
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- unsigned long *bitmap;
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- hwaddr size;
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- hwaddr pages;
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-} VFIOBitmap;
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-
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VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
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void vfio_put_address_space(VFIOAddressSpace *space);
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bool vfio_devices_all_running_and_saving(VFIOContainer *container);
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diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
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new file mode 100644
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index 0000000000..1d6daaea5d
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--- /dev/null
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+++ b/include/hw/vfio/vfio-container-base.h
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@@ -0,0 +1,50 @@
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+/*
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+ * VFIO BASE CONTAINER
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+ *
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+ * Copyright (C) 2023 Intel Corporation.
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+ * Copyright Red Hat, Inc. 2023
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+ *
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+ * Authors: Yi Liu <yi.l.liu@intel.com>
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+ * Eric Auger <eric.auger@redhat.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0-or-later
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+ */
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+
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+#ifndef HW_VFIO_VFIO_CONTAINER_BASE_H
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+#define HW_VFIO_VFIO_CONTAINER_BASE_H
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+
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+#include "exec/memory.h"
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+
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+typedef struct VFIODevice VFIODevice;
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+typedef struct VFIOIOMMUOps VFIOIOMMUOps;
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+
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+typedef struct {
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+ unsigned long *bitmap;
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+ hwaddr size;
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+ hwaddr pages;
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+} VFIOBitmap;
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+
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+/*
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+ * This is the base object for vfio container backends
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+ */
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+typedef struct VFIOContainerBase {
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+ const VFIOIOMMUOps *ops;
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+} VFIOContainerBase;
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+
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+struct VFIOIOMMUOps {
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+ /* basic feature */
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+ int (*dma_map)(VFIOContainerBase *bcontainer,
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+ hwaddr iova, ram_addr_t size,
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+ void *vaddr, bool readonly);
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+ int (*dma_unmap)(VFIOContainerBase *bcontainer,
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+ hwaddr iova, ram_addr_t size,
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+ IOMMUTLBEntry *iotlb);
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+ int (*attach_device)(const char *name, VFIODevice *vbasedev,
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+ AddressSpace *as, Error **errp);
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+ void (*detach_device)(VFIODevice *vbasedev);
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+ /* migration feature */
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+ int (*set_dirty_page_tracking)(VFIOContainerBase *bcontainer, bool start);
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+ int (*query_dirty_bitmap)(VFIOContainerBase *bcontainer, VFIOBitmap *vbmap,
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+ hwaddr iova, hwaddr size);
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+};
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+#endif /* HW_VFIO_VFIO_CONTAINER_BASE_H */
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--
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2.39.3
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