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author | Jagannathan Raman <jag.raman@oracle.com> | 2022-06-13 16:26:27 -0400 |
---|---|---|
committer | Stefan Hajnoczi <stefanha@redhat.com> | 2022-06-15 16:43:42 +0100 |
commit | a6e8d6d98e61a270bcbd1e611f2e1d71a80d86c5 (patch) | |
tree | a9fdd395d22dd713343d5dae51b2bc4e14380706 /hw | |
parent | 87f7249ff6e37c541609e40b17d249af533003e1 (diff) | |
download | qemu-a6e8d6d98e61a270bcbd1e611f2e1d71a80d86c5.zip qemu-a6e8d6d98e61a270bcbd1e611f2e1d71a80d86c5.tar.gz qemu-a6e8d6d98e61a270bcbd1e611f2e1d71a80d86c5.tar.bz2 |
vfio-user: find and init PCI device
Find the PCI device with specified id. Initialize the device context
with the QEMU PCI device
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 7798dbd730099b33fdd00c4c202cfe79e5c5c151.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/remote/vfio-user-obj.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c index 68f8a9d..3ca6aa2 100644 --- a/hw/remote/vfio-user-obj.c +++ b/hw/remote/vfio-user-obj.c @@ -43,6 +43,8 @@ #include "qemu/notify.h" #include "sysemu/sysemu.h" #include "libvfio-user.h" +#include "hw/qdev-core.h" +#include "hw/pci/pci.h" #define TYPE_VFU_OBJECT "x-vfio-user-server" OBJECT_DECLARE_TYPE(VfuObject, VfuObjectClass, VFU_OBJECT) @@ -80,6 +82,10 @@ struct VfuObject { Notifier machine_done; vfu_ctx_t *vfu_ctx; + + PCIDevice *pci_dev; + + Error *unplug_blocker; }; static void vfu_object_init_ctx(VfuObject *o, Error **errp); @@ -181,6 +187,9 @@ static void vfu_object_machine_done(Notifier *notifier, void *data) static void vfu_object_init_ctx(VfuObject *o, Error **errp) { ERRP_GUARD(); + DeviceState *dev = NULL; + vfu_pci_type_t pci_type = VFU_PCI_TYPE_CONVENTIONAL; + int ret; if (o->vfu_ctx || !o->socket || !o->device || !phase_check(PHASE_MACHINE_READY)) { @@ -199,6 +208,53 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp) error_setg(errp, "vfu: Failed to create context - %s", strerror(errno)); return; } + + dev = qdev_find_recursive(sysbus_get_default(), o->device); + if (dev == NULL) { + error_setg(errp, "vfu: Device %s not found", o->device); + goto fail; + } + + if (!object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + error_setg(errp, "vfu: %s not a PCI device", o->device); + goto fail; + } + + o->pci_dev = PCI_DEVICE(dev); + + object_ref(OBJECT(o->pci_dev)); + + if (pci_is_express(o->pci_dev)) { + pci_type = VFU_PCI_TYPE_EXPRESS; + } + + ret = vfu_pci_init(o->vfu_ctx, pci_type, PCI_HEADER_TYPE_NORMAL, 0); + if (ret < 0) { + error_setg(errp, + "vfu: Failed to attach PCI device %s to context - %s", + o->device, strerror(errno)); + goto fail; + } + + error_setg(&o->unplug_blocker, + "vfu: %s for %s must be deleted before unplugging", + TYPE_VFU_OBJECT, o->device); + qdev_add_unplug_blocker(DEVICE(o->pci_dev), o->unplug_blocker); + + return; + +fail: + vfu_destroy_ctx(o->vfu_ctx); + if (o->unplug_blocker && o->pci_dev) { + qdev_del_unplug_blocker(DEVICE(o->pci_dev), o->unplug_blocker); + error_free(o->unplug_blocker); + o->unplug_blocker = NULL; + } + if (o->pci_dev) { + object_unref(OBJECT(o->pci_dev)); + o->pci_dev = NULL; + } + o->vfu_ctx = NULL; } static void vfu_object_init(Object *obj) @@ -241,6 +297,17 @@ static void vfu_object_finalize(Object *obj) o->device = NULL; + if (o->unplug_blocker && o->pci_dev) { + qdev_del_unplug_blocker(DEVICE(o->pci_dev), o->unplug_blocker); + error_free(o->unplug_blocker); + o->unplug_blocker = NULL; + } + + if (o->pci_dev) { + object_unref(OBJECT(o->pci_dev)); + o->pci_dev = NULL; + } + if (!k->nr_devs && vfu_object_auto_shutdown()) { qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); } |