pci_ivshmem.c: ivshmem_support_irq API support

ivshmem based driver can use this api to judge weather current ivshmem device support irq or not, and use polling mode or irq mode to process the event. Signed-off-by: wangyongrong <[email protected]>
apache · Oct 12, 2024 · ad2e6fb · ad2e6fb
1 parent 99b6c77
commit ad2e6fb
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diff --git a/drivers/pci/pci_ivshmem.c b/drivers/pci/pci_ivshmem.c
@@ -413,6 +413,19 @@ int ivshmem_control_irq(FAR struct ivshmem_device_s *dev, bool on)
   return OK;
 }
 
+/****************************************************************************
+ * Name: ivshmem_support_irq
+ *
+ * Description:
+ *   Judge if support ivshmem interrupt
+ *
+ ****************************************************************************/
+
+bool ivshmem_support_irq(FAR struct ivshmem_device_s *dev)
+{
+  return dev->vmid != IVSHMEM_INVALID_VMID;
+}
+
 /****************************************************************************
  * Name: ivshmem_kick_peer
  *

diff --git a/include/nuttx/pci/pci_ivshmem.h b/include/nuttx/pci/pci_ivshmem.h
@@ -116,6 +116,16 @@ int ivshmem_detach_irq(FAR struct ivshmem_device_s *dev);
 
 int ivshmem_control_irq(FAR struct ivshmem_device_s *dev, bool on);
 
+/****************************************************************************
+ * Name: ivshmem_support_irq
+ *
+ * Description:
+ *   judge if support ivshmem interrupt
+ *
+ ****************************************************************************/
+
+bool ivshmem_support_irq(FAR struct ivshmem_device_s *dev);
+
 /****************************************************************************
  * Name: ivshmem_kick_peer
  *