Merge tag 'pull-vfio-20240522' of https://github.com/legoater/qemu into staging

vfio queue:

* Improvement of error reporting during migration
* Removed Vendor Specific Capability check on newer machine
* Addition of a VFIO migration QAPI event
* Changed prototype of routines using an error parameter to return bool
* Several cleanups regarding autofree variables

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* tag 'pull-vfio-20240522' of https://github.com/legoater/qemu: (47 commits)
  vfio/igd: Use g_autofree in vfio_probe_igd_bar4_quirk()
  vfio: Use g_autofree in all call site of vfio_get_region_info()
  vfio/pci-quirks: Make vfio_add_*_cap() return bool
  vfio/pci-quirks: Make vfio_pci_igd_opregion_init() return bool
  vfio/pci: Use g_autofree for vfio_region_info pointer
  vfio/pci: Make capability related functions return bool
  vfio/pci: Make vfio_populate_vga() return bool
  vfio/pci: Make vfio_intx_enable() return bool
  vfio/pci: Make vfio_populate_device() return a bool
  vfio/pci: Make vfio_pci_relocate_msix() and vfio_msix_early_setup() return a bool
  vfio/pci: Make vfio_intx_enable_kvm() return a bool
  vfio/ccw: Make vfio_ccw_get_region() return a bool
  vfio/platform: Make vfio_populate_device() and vfio_base_device_init() return bool
  vfio/helpers: Make vfio_device_get_name() return bool
  vfio/helpers: Make vfio_set_irq_signaling() return bool
  vfio/helpers: Use g_autofree in vfio_set_irq_signaling()
  vfio/display: Make vfio_display_*() return bool
  vfio/display: Fix error path in call site of ramfb_setup()
  backends/iommufd: Make iommufd_backend_*() return bool
  vfio/cpr: Make vfio_cpr_register_container() return bool
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

3 files changed, 69 insertions, 0 deletions

diff --git a/qapi/meson.build b/qapi/meson.build
index c92af6e..e7bc54e 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -52,6 +52,7 @@ qapi_all_modules = [
   'stats',
   'trace',
   'transaction',
+  'vfio',
   'virtio',
   'yank',
 ]
diff --git a/qapi/qapi-schema.json b/qapi/qapi-schema.json
index 5e33da7..b158198 100644
--- a/qapi/qapi-schema.json
+++ b/qapi/qapi-schema.json
@@ -78,5 +78,6 @@
 { 'include': 'pci.json' }
 { 'include': 'stats.json' }
 { 'include': 'virtio.json' }
+{ 'include': 'vfio.json' }
 { 'include': 'cryptodev.json' }
 { 'include': 'cxl.json' }
diff --git a/qapi/vfio.json b/qapi/vfio.json
new file mode 100644
index 0000000..a0e5013
--- /dev/null
+++ b/qapi/vfio.json
@@ -0,0 +1,67 @@
+# -*- Mode: Python -*-
+# vim: filetype=python
+#
+
+##
+# = VFIO devices
+##
+
+##
+# @VfioMigrationState:
+#
+# An enumeration of the VFIO device migration states.
+#
+# @stop: The device is stopped.
+#
+# @running: The device is running.
+#
+# @stop-copy: The device is stopped and its internal state is available
+#     for reading.
+#
+# @resuming: The device is stopped and its internal state is available
+#     for writing.
+#
+# @running-p2p: The device is running in the P2P quiescent state.
+#
+# @pre-copy: The device is running, tracking its internal state and its
+#     internal state is available for reading.
+#
+# @pre-copy-p2p: The device is running in the P2P quiescent state,
+#     tracking its internal state and its internal state is available
+#     for reading.
+#
+# Since: 9.1
+##
+{ 'enum': 'VfioMigrationState',
+  'data': [ 'stop', 'running', 'stop-copy', 'resuming', 'running-p2p',
+            'pre-copy', 'pre-copy-p2p' ],
+  'prefix': 'QAPI_VFIO_MIGRATION_STATE' }
+
+##
+# @VFIO_MIGRATION:
+#
+# This event is emitted when a VFIO device migration state is changed.
+#
+# @device-id: The device's id, if it has one.
+#
+# @qom-path: The device's QOM path.
+#
+# @device-state: The new changed device migration state.
+#
+# Since: 9.1
+#
+# Example:
+#
+#     <- { "timestamp": { "seconds": 1713771323, "microseconds": 212268 },
+#          "event": "VFIO_MIGRATION",
+#          "data": {
+#              "device-id": "vfio_dev1",
+#              "qom-path": "/machine/peripheral/vfio_dev1",
+#              "device-state": "stop" } }
+##
+{ 'event': 'VFIO_MIGRATION',
+  'data': {
+      'device-id': 'str',
+      'qom-path': 'str',
+      'device-state': 'VfioMigrationState'
+  } }