msi: add API to get notified about pending bit poll

Update all users.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/hw/pci/msix.c b/hw/pci/msix.c
index 073e22c315..a285d18197 100644
--- a/hw/pci/msix.c
+++ b/hw/pci/msix.c
@@ -191,6 +191,11 @@ static uint64_t msix_pba_mmio_read(void *opaque, hwaddr addr,
                                    unsigned size)
 {
     PCIDevice *dev = opaque;
+    if (dev->msix_vector_poll_notifier) {
+        unsigned vector_start = addr * 8;
+        unsigned vector_end = MIN(addr + size * 8, dev->msix_entries_nr);
+        dev->msix_vector_poll_notifier(dev, vector_start, vector_end);
+    }
 
     return pci_get_long(dev->msix_pba + addr);
 }
@@ -513,7 +518,8 @@ static void msix_unset_notifier_for_vector(PCIDevice *dev, unsigned int vector)
 
 int msix_set_vector_notifiers(PCIDevice *dev,
                               MSIVectorUseNotifier use_notifier,
-                              MSIVectorReleaseNotifier release_notifier)
+                              MSIVectorReleaseNotifier release_notifier,
+                              MSIVectorPollNotifier poll_notifier)
 {
     int vector, ret;
 
@@ -521,6 +527,7 @@ int msix_set_vector_notifiers(PCIDevice *dev,
 
     dev->msix_vector_use_notifier = use_notifier;
     dev->msix_vector_release_notifier = release_notifier;
+    dev->msix_vector_poll_notifier = poll_notifier;
 
     if ((dev->config[dev->msix_cap + MSIX_CONTROL_OFFSET] &
         (MSIX_ENABLE_MASK | MSIX_MASKALL_MASK)) == MSIX_ENABLE_MASK) {
@@ -531,6 +538,9 @@ int msix_set_vector_notifiers(PCIDevice *dev,
             }
         }
     }
+    if (dev->msix_vector_poll_notifier) {
+        dev->msix_vector_poll_notifier(dev, 0, dev->msix_entries_nr);
+    }
     return 0;
 
 undo:
@@ -557,4 +567,5 @@ void msix_unset_vector_notifiers(PCIDevice *dev)
     }
     dev->msix_vector_use_notifier = NULL;
     dev->msix_vector_release_notifier = NULL;
+    dev->msix_vector_poll_notifier = NULL;
 }