Merge tag 'pull-vfio-20250908' of https://github.com/legoater/qemu into staging

vfio queue:

* Large refactor of the VFIO code to use QOM casts and follow the
  current coding style guidelines
* Removal of the deprecated vfio-platform, vfio-calxeda-xgmac and
  vfio-amd-xgbe devices
* Fail with error if dma_max_mappings limit is hit
* Added 'x-pci-class-code' property to vfio-user-pci device
* Added a new helper to retrieve a VFIOPCIDevice from a VFIODevice
* Fixed IGD OpRegion detection

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# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-vfio-20250908' of https://github.com/legoater/qemu: (31 commits)
  vfio/pci.h: rename VFIOPCIDevice pdev field to parent_obj
  s390x/s390-pci-vfio.c: use QOM casts where appropriate
  vfio-user/pci.c: use QOM casts where appropriate
  vfio/igd.c: use QOM casts where appropriate
  vfio/cpr.c: use QOM casts where appropriate
  vfio/pci-quirks.c: use QOM casts where appropriate
  vfio/pci.c: use QOM casts where appropriate
  vfio/pci.h: update VFIOPCIDevice declaration
  vfio-user/pci.c: rename VFIOUserPCIDevice device field to parent_obj
  vfio-user/pci.c: use QOM casts where appropriate
  vfio-user/pci.c: update VFIOUserPCIDevice declaration
  vfio-user/container.h: rename VFIOUserContainer bcontainer field to parent_obj
  vfio/container.c: use QOM casts where appropriate
  vfio-user/container.h: update VFIOUserContainer declaration
  vfio/vfio-container.h: rename VFIOContainer bcontainer field to parent_obj
  vfio/spapr.c: use QOM casts where appropriate
  ppc/spapr_pci_vfio.c: use QOM casts where appropriate
  hw/vfio/container.c: use QOM casts where appropriate
  hw/vfio/cpr-legacy.c: use QOM casts where appropriate
  vfio/vfio-container.h: update VFIOContainer declaration
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

7 files changed, 12 insertions, 225 deletions

diff --git a/include/hw/vfio/vfio-amd-xgbe.h b/include/hw/vfio/vfio-amd-xgbe.h
deleted file mode 100644
index a894546c02..0000000000
--- a/include/hw/vfio/vfio-amd-xgbe.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * VFIO AMD XGBE device
- *
- * Copyright Linaro Limited, 2015
- *
- * Authors:
- *  Eric Auger <eric.auger@linaro.org>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- */
-
-#ifndef HW_VFIO_VFIO_AMD_XGBE_H
-#define HW_VFIO_VFIO_AMD_XGBE_H
-
-#include "hw/vfio/vfio-platform.h"
-#include "qom/object.h"
-
-#define TYPE_VFIO_AMD_XGBE "vfio-amd-xgbe"
-
-/**
- * This device exposes:
- * - 5 MMIO regions: MAC, PCS, SerDes Rx/Tx regs,
-     SerDes Integration Registers 1/2 & 2/2
- * - 2 level sensitive IRQs and optional DMA channel IRQs
- */
-struct VFIOAmdXgbeDevice {
-    VFIOPlatformDevice vdev;
-};
-
-typedef struct VFIOAmdXgbeDevice VFIOAmdXgbeDevice;
-
-struct VFIOAmdXgbeDeviceClass {
-    /*< private >*/
-    VFIOPlatformDeviceClass parent_class;
-    /*< public >*/
-    DeviceRealize parent_realize;
-};
-
-typedef struct VFIOAmdXgbeDeviceClass VFIOAmdXgbeDeviceClass;
-
-DECLARE_OBJ_CHECKERS(VFIOAmdXgbeDevice, VFIOAmdXgbeDeviceClass,
-                     VFIO_AMD_XGBE_DEVICE, TYPE_VFIO_AMD_XGBE)
-
-#endif
diff --git a/include/hw/vfio/vfio-calxeda-xgmac.h b/include/hw/vfio/vfio-calxeda-xgmac.h
deleted file mode 100644
index 8482f151dd..0000000000
--- a/include/hw/vfio/vfio-calxeda-xgmac.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * VFIO calxeda xgmac device
- *
- * Copyright Linaro Limited, 2014
- *
- * Authors:
- *  Eric Auger <eric.auger@linaro.org>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- */
-
-#ifndef HW_VFIO_VFIO_CALXEDA_XGMAC_H
-#define HW_VFIO_VFIO_CALXEDA_XGMAC_H
-
-#include "hw/vfio/vfio-platform.h"
-#include "qom/object.h"
-
-#define TYPE_VFIO_CALXEDA_XGMAC "vfio-calxeda-xgmac"
-
-/**
- * This device exposes:
- * - a single MMIO region corresponding to its register space
- * - 3 IRQS (main and 2 power related IRQs)
- */
-struct VFIOCalxedaXgmacDevice {
-    VFIOPlatformDevice vdev;
-};
-typedef struct VFIOCalxedaXgmacDevice VFIOCalxedaXgmacDevice;
-
-struct VFIOCalxedaXgmacDeviceClass {
-    /*< private >*/
-    VFIOPlatformDeviceClass parent_class;
-    /*< public >*/
-    DeviceRealize parent_realize;
-};
-typedef struct VFIOCalxedaXgmacDeviceClass VFIOCalxedaXgmacDeviceClass;
-
-DECLARE_OBJ_CHECKERS(VFIOCalxedaXgmacDevice, VFIOCalxedaXgmacDeviceClass,
-                     VFIO_CALXEDA_XGMAC_DEVICE, TYPE_VFIO_CALXEDA_XGMAC)
-
-#endif
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index bded6e993f..acbd48a18a 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -33,8 +33,9 @@ typedef struct VFIOAddressSpace {
 /*
  * This is the base object for vfio container backends
  */
-typedef struct VFIOContainerBase {
-    Object parent;
+struct VFIOContainerBase {
+    Object parent_obj;
+
     VFIOAddressSpace *space;
     MemoryListener listener;
     Error *error;
@@ -51,7 +52,10 @@ typedef struct VFIOContainerBase {
     QLIST_HEAD(, VFIODevice) device_list;
     GList *iova_ranges;
     NotifierWithReturn cpr_reboot_notifier;
-} VFIOContainerBase;
+};
+
+#define TYPE_VFIO_IOMMU "vfio-iommu"
+OBJECT_DECLARE_TYPE(VFIOContainerBase, VFIOIOMMUClass, VFIO_IOMMU)
 
 typedef struct VFIOGuestIOMMU {
     VFIOContainerBase *bcontainer;
@@ -105,14 +109,11 @@ vfio_container_get_page_size_mask(const VFIOContainerBase *bcontainer)
     return bcontainer->pgsizes;
 }
 
-#define TYPE_VFIO_IOMMU "vfio-iommu"
 #define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
 #define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
 #define TYPE_VFIO_IOMMU_IOMMUFD TYPE_VFIO_IOMMU "-iommufd"
 #define TYPE_VFIO_IOMMU_USER TYPE_VFIO_IOMMU "-user"
 
-OBJECT_DECLARE_TYPE(VFIOContainerBase, VFIOIOMMUClass, VFIO_IOMMU)
-
 struct VFIOIOMMUClass {
     ObjectClass parent_class;
 
diff --git a/include/hw/vfio/vfio-container.h b/include/hw/vfio/vfio-container.h
index 21e5807e48..240f566993 100644
--- a/include/hw/vfio/vfio-container.h
+++ b/include/hw/vfio/vfio-container.h
@@ -25,13 +25,14 @@ typedef struct VFIOGroup {
     bool ram_block_discard_allowed;
 } VFIOGroup;
 
-typedef struct VFIOContainer {
-    VFIOContainerBase bcontainer;
+struct VFIOContainer {
+    VFIOContainerBase parent_obj;
+
     int fd; /* /dev/vfio/vfio, empowered by the attached groups */
     unsigned iommu_type;
     QLIST_HEAD(, VFIOGroup) group_list;
     VFIOContainerCPR cpr;
-} VFIOContainer;
+};
 
 OBJECT_DECLARE_SIMPLE_TYPE(VFIOContainer, VFIO_IOMMU_LEGACY);
 
diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h
index 6e4d5ccdac..e7e6243e2d 100644
--- a/include/hw/vfio/vfio-device.h
+++ b/include/hw/vfio/vfio-device.h
@@ -36,7 +36,7 @@
 
 enum {
     VFIO_DEVICE_TYPE_PCI = 0,
-    VFIO_DEVICE_TYPE_PLATFORM = 1,
+    VFIO_DEVICE_TYPE_UNUSED = 1,
     VFIO_DEVICE_TYPE_CCW = 2,
     VFIO_DEVICE_TYPE_AP = 3,
 };
diff --git a/include/hw/vfio/vfio-platform.h b/include/hw/vfio/vfio-platform.h
deleted file mode 100644
index 256d8500b7..0000000000
--- a/include/hw/vfio/vfio-platform.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * vfio based device assignment support - platform devices
- *
- * Copyright Linaro Limited, 2014
- *
- * Authors:
- *  Kim Phillips <kim.phillips@linaro.org>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- * Based on vfio based PCI device assignment support:
- *  Copyright Red Hat, Inc. 2012
- */
-
-#ifndef HW_VFIO_VFIO_PLATFORM_H
-#define HW_VFIO_VFIO_PLATFORM_H
-
-#include "hw/sysbus.h"
-#include "hw/vfio/vfio-device.h"
-#include "qemu/event_notifier.h"
-#include "qemu/queue.h"
-#include "qom/object.h"
-
-#define TYPE_VFIO_PLATFORM "vfio-platform"
-
-enum {
-    VFIO_IRQ_INACTIVE = 0,
-    VFIO_IRQ_PENDING = 1,
-    VFIO_IRQ_ACTIVE = 2,
-    /* VFIO_IRQ_ACTIVE_AND_PENDING cannot happen with VFIO */
-};
-
-typedef struct VFIOINTp {
-    QLIST_ENTRY(VFIOINTp) next; /* entry for IRQ list */
-    QSIMPLEQ_ENTRY(VFIOINTp) pqnext; /* entry for pending IRQ queue */
-    EventNotifier *interrupt; /* eventfd triggered on interrupt */
-    EventNotifier *unmask; /* eventfd for unmask on QEMU bypass */
-    qemu_irq qemuirq;
-    struct VFIOPlatformDevice *vdev; /* back pointer to device */
-    int state; /* inactive, pending, active */
-    uint8_t pin; /* index */
-    uint32_t flags; /* IRQ info flags */
-    bool kvm_accel; /* set when QEMU bypass through KVM enabled */
-} VFIOINTp;
-
-/* function type for user side eventfd handler */
-typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp);
-
-typedef struct VFIORegion VFIORegion;
-
-struct VFIOPlatformDevice {
-    SysBusDevice sbdev;
-    VFIODevice vbasedev; /* not a QOM object */
-    VFIORegion **regions;
-    QLIST_HEAD(, VFIOINTp) intp_list; /* list of IRQs */
-    /* queue of pending IRQs */
-    QSIMPLEQ_HEAD(, VFIOINTp) pending_intp_queue;
-    char *compat; /* DT compatible values, separated by NUL */
-    unsigned int num_compat; /* number of compatible values */
-    uint32_t mmap_timeout; /* delay to re-enable mmaps after interrupt */
-    QEMUTimer *mmap_timer; /* allows fast-path resume after IRQ hit */
-    QemuMutex intp_mutex; /* protect the intp_list IRQ state */
-    bool irqfd_allowed; /* debug option to force irqfd on/off */
-};
-typedef struct VFIOPlatformDevice VFIOPlatformDevice;
-
-struct VFIOPlatformDeviceClass {
-    /*< private >*/
-    SysBusDeviceClass parent_class;
-    /*< public >*/
-};
-typedef struct VFIOPlatformDeviceClass VFIOPlatformDeviceClass;
-
-DECLARE_OBJ_CHECKERS(VFIOPlatformDevice, VFIOPlatformDeviceClass,
-                     VFIO_PLATFORM_DEVICE, TYPE_VFIO_PLATFORM)
-
-#endif /* HW_VFIO_VFIO_PLATFORM_H */
diff --git a/include/hw/vfio/vfio-region.h b/include/hw/vfio/vfio-region.h
deleted file mode 100644
index ede6e0c8f9..0000000000
--- a/include/hw/vfio/vfio-region.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * VFIO region
- *
- * Copyright Red Hat, Inc. 2025
- *
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#ifndef HW_VFIO_REGION_H
-#define HW_VFIO_REGION_H
-
-#include "system/memory.h"
-
-typedef struct VFIOMmap {
-    MemoryRegion mem;
-    void *mmap;
-    off_t offset;
-    size_t size;
-} VFIOMmap;
-
-typedef struct VFIODevice VFIODevice;
-
-typedef struct VFIORegion {
-    struct VFIODevice *vbasedev;
-    off_t fd_offset; /* offset of region within device fd */
-    MemoryRegion *mem; /* slow, read/write access */
-    size_t size;
-    uint32_t flags; /* VFIO region flags (rd/wr/mmap) */
-    uint32_t nr_mmaps;
-    VFIOMmap *mmaps;
-    uint8_t nr; /* cache the region number for debug */
-    bool post_wr; /* writes can be posted */
-} VFIORegion;
-
-
-void vfio_region_write(void *opaque, hwaddr addr,
-                           uint64_t data, unsigned size);
-uint64_t vfio_region_read(void *opaque,
-                          hwaddr addr, unsigned size);
-int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
-                      int index, const char *name);
-int vfio_region_mmap(VFIORegion *region);
-void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
-void vfio_region_unmap(VFIORegion *region);
-void vfio_region_exit(VFIORegion *region);
-void vfio_region_finalize(VFIORegion *region);
-
-#endif /* HW_VFIO_REGION_H */