Merge tag 'pull-vfio-20231018' of https://github.com/legoater/qemu into staging

vfio queue:

* Support for VFIODisplay migration with ramfb
* Preliminary work for IOMMUFD support

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# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [unknown]
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# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-vfio-20231018' of https://github.com/legoater/qemu: (22 commits)
  hw/vfio: add ramfb migration support
  ramfb-standalone: add migration support
  ramfb: add migration support
  vfio/pci: Remove vfio_detach_device from vfio_realize error path
  vfio/ccw: Remove redundant definition of TYPE_VFIO_CCW
  vfio/ap: Remove pointless apdev variable
  vfio/pci: Fix a potential memory leak in vfio_listener_region_add
  vfio/common: Move legacy VFIO backend code into separate container.c
  vfio/common: Introduce a global VFIODevice list
  vfio/common: Store the parent container in VFIODevice
  vfio/common: Introduce a per container device list
  vfio/common: Move VFIO reset handler registration to a group agnostic function
  vfio/ccw: Use vfio_[attach/detach]_device
  vfio/ap: Use vfio_[attach/detach]_device
  vfio/platform: Use vfio_[attach/detach]_device
  vfio/pci: Introduce vfio_[attach/detach]_device
  vfio/common: Extract out vfio_kvm_device_[add/del]_fd
  vfio/common: Introduce vfio_container_add|del_section_window()
  vfio/common: Propagate KVM_SET_DEVICE_ATTR error if any
  vfio/common: Move IOMMU agnostic helpers to a separate file
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

3 files changed, 59 insertions, 7 deletions

diff --git a/include/hw/display/ramfb.h b/include/hw/display/ramfb.h
index b33a2c4..a7e0019 100644
--- a/include/hw/display/ramfb.h
+++ b/include/hw/display/ramfb.h
@@ -1,11 +1,15 @@
 #ifndef RAMFB_H
 #define RAMFB_H
 
+#include "migration/vmstate.h"
+
 /* ramfb.c */
 typedef struct RAMFBState RAMFBState;
 void ramfb_display_update(QemuConsole *con, RAMFBState *s);
 RAMFBState *ramfb_setup(Error **errp);
 
+extern const VMStateDescription ramfb_vmstate;
+
 /* ramfb-standalone.c */
 #define TYPE_RAMFB_DEVICE "ramfb"
 
diff --git a/include/hw/s390x/vfio-ccw.h b/include/hw/s390x/vfio-ccw.h
index 63a909e..4209d27 100644
--- a/include/hw/s390x/vfio-ccw.h
+++ b/include/hw/s390x/vfio-ccw.h
@@ -22,6 +22,4 @@
 #define TYPE_VFIO_CCW "vfio-ccw"
 OBJECT_DECLARE_SIMPLE_TYPE(VFIOCCWDevice, VFIO_CCW)
 
-#define TYPE_VFIO_CCW "vfio-ccw"
-
 #endif
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index e9b8954..7780b90 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -98,6 +98,7 @@ typedef struct VFIOContainer {
     QLIST_HEAD(, VFIOGroup) group_list;
     QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
     QLIST_ENTRY(VFIOContainer) next;
+    QLIST_HEAD(, VFIODevice) device_list;
 } VFIOContainer;
 
 typedef struct VFIOGuestIOMMU {
@@ -129,7 +130,10 @@ typedef struct VFIODeviceOps VFIODeviceOps;
 
 typedef struct VFIODevice {
     QLIST_ENTRY(VFIODevice) next;
+    QLIST_ENTRY(VFIODevice) container_next;
+    QLIST_ENTRY(VFIODevice) global_next;
     struct VFIOGroup *group;
+    VFIOContainer *container;
     char *sysfsdev;
     char *name;
     DeviceState *dev;
@@ -196,7 +200,36 @@ typedef struct VFIODisplay {
     } dmabuf;
 } VFIODisplay;
 
-void vfio_put_base_device(VFIODevice *vbasedev);
+typedef struct {
+    unsigned long *bitmap;
+    hwaddr size;
+    hwaddr pages;
+} VFIOBitmap;
+
+void vfio_host_win_add(VFIOContainer *container,
+                       hwaddr min_iova, hwaddr max_iova,
+                       uint64_t iova_pgsizes);
+int vfio_host_win_del(VFIOContainer *container, hwaddr min_iova,
+                      hwaddr max_iova);
+VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
+void vfio_put_address_space(VFIOAddressSpace *space);
+bool vfio_devices_all_running_and_saving(VFIOContainer *container);
+
+/* container->fd */
+int vfio_dma_unmap(VFIOContainer *container, hwaddr iova,
+                   ram_addr_t size, IOMMUTLBEntry *iotlb);
+int vfio_dma_map(VFIOContainer *container, hwaddr iova,
+                 ram_addr_t size, void *vaddr, bool readonly);
+int vfio_set_dirty_page_tracking(VFIOContainer *container, bool start);
+int vfio_query_dirty_bitmap(VFIOContainer *container, VFIOBitmap *vbmap,
+                            hwaddr iova, hwaddr size);
+
+int vfio_container_add_section_window(VFIOContainer *container,
+                                      MemoryRegionSection *section,
+                                      Error **errp);
+void vfio_container_del_section_window(VFIOContainer *container,
+                                       MemoryRegionSection *section);
+
 void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
 void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
 void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
@@ -214,15 +247,22 @@ void vfio_region_unmap(VFIORegion *region);
 void vfio_region_exit(VFIORegion *region);
 void vfio_region_finalize(VFIORegion *region);
 void vfio_reset_handler(void *opaque);
-VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp);
-void vfio_put_group(VFIOGroup *group);
 struct vfio_device_info *vfio_get_device_info(int fd);
-int vfio_get_device(VFIOGroup *group, const char *name,
-                    VFIODevice *vbasedev, Error **errp);
+int vfio_attach_device(char *name, VFIODevice *vbasedev,
+                       AddressSpace *as, Error **errp);
+void vfio_detach_device(VFIODevice *vbasedev);
+
+int vfio_kvm_device_add_fd(int fd, Error **errp);
+int vfio_kvm_device_del_fd(int fd, Error **errp);
 
 extern const MemoryRegionOps vfio_region_ops;
 typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList;
+typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
 extern VFIOGroupList vfio_group_list;
+extern VFIODeviceList vfio_device_list;
+
+extern const MemoryListener vfio_memory_listener;
+extern int vfio_kvm_device_fd;
 
 bool vfio_mig_active(void);
 int vfio_block_multiple_devices_migration(VFIODevice *vbasedev, Error **errp);
@@ -245,6 +285,8 @@ bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
                              unsigned int *avail);
 struct vfio_info_cap_header *
 vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
+struct vfio_info_cap_header *
+vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id);
 #endif
 extern const MemoryListener vfio_prereg_listener;
 
@@ -257,4 +299,12 @@ int vfio_spapr_remove_window(VFIOContainer *container,
 bool vfio_migration_realize(VFIODevice *vbasedev, Error **errp);
 void vfio_migration_exit(VFIODevice *vbasedev);
 
+int vfio_bitmap_alloc(VFIOBitmap *vbmap, hwaddr size);
+bool vfio_devices_all_running_and_mig_active(VFIOContainer *container);
+bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container);
+int vfio_devices_query_dirty_bitmap(VFIOContainer *container,
+                                    VFIOBitmap *vbmap, hwaddr iova,
+                                    hwaddr size);
+int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
+                                 uint64_t size, ram_addr_t ram_addr);
 #endif /* HW_VFIO_VFIO_COMMON_H */