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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# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [full]
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* 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>

1 files changed, 19 insertions, 1 deletions

diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index 810a842f4a..e0aef82a89 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -123,7 +123,8 @@ typedef struct VFIOMSIXInfo {
 OBJECT_DECLARE_SIMPLE_TYPE(VFIOPCIDevice, VFIO_PCI_BASE)
 
 struct VFIOPCIDevice {
-    PCIDevice pdev;
+    PCIDevice parent_obj;
+
     VFIODevice vbasedev;
     VFIOINTx intx;
     unsigned int config_size;
@@ -203,6 +204,11 @@ static inline bool vfio_is_vga(VFIOPCIDevice *vdev)
     return (vdev->class_code >> 8) == PCI_CLASS_DISPLAY_VGA;
 }
 
+static inline bool vfio_is_base_display(VFIOPCIDevice *vdev)
+{
+    return (vdev->class_code >> 16) == PCI_BASE_CLASS_DISPLAY;
+}
+
 /* MSI/MSI-X/INTx */
 void vfio_pci_vector_init(VFIOPCIDevice *vdev, int nr);
 void vfio_pci_add_kvm_msi_virq(VFIOPCIDevice *vdev, VFIOMSIVector *vector,
@@ -221,6 +227,18 @@ void vfio_pci_write_config(PCIDevice *pdev,
 uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);
 void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);
 
+/**
+ * vfio_pci_from_vfio_device: Transform from VFIODevice to
+ * VFIOPCIDevice
+ *
+ * This function checks if the given @vbasedev is a VFIO PCI device.
+ * If it is, it returns the containing VFIOPCIDevice.
+ *
+ * @vbasedev: The VFIODevice to transform
+ *
+ * Return: The VFIOPCIDevice on success, NULL on failure.
+ */
+VFIOPCIDevice *vfio_pci_from_vfio_device(VFIODevice *vbasedev);
 void vfio_sub_page_bar_update_mappings(VFIOPCIDevice *vdev);
 bool vfio_opt_rom_in_denylist(VFIOPCIDevice *vdev);
 bool vfio_config_quirk_setup(VFIOPCIDevice *vdev, Error **errp);