This updates kernel header (vfio.h) for EEH support on VFIO PCI
devices.
Signed-off-by: Gavin Shan <gws...@linux.vnet.ibm.com>
---
linux-headers/linux/vfio.h | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 26c218e..95b591b 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -30,6 +30,9 @@
*/
#define VFIO_DMA_CC_IOMMU 4
+/* Check if EEH is supported */
+#define VFIO_EEH 5
+
/*
* The IOCTL interface is designed for extensibility by embedding the
* structure length (argsz) and flags into structures passed between
@@ -455,6 +458,37 @@ struct vfio_iommu_spapr_tce_info {
#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
+/*
+ * EEH PE operation struct provides ways to:
+ * - enable/disable EEH functionality;
+ * - unfreeze IO/DMA for frozen PE;
+ * - read PE state;
+ * - reset PE;
+ * - configure PE.
+ */
+struct vfio_eeh_pe_op {
+ __u32 argsz;
+ __u32 flags;
+ __u32 op;
+};
+
+#define VFIO_EEH_PE_DISABLE 0 /* Disable EEH functionality */
+#define VFIO_EEH_PE_ENABLE 1 /* Enable EEH functionality */
+#define VFIO_EEH_PE_UNFREEZE_IO 2 /* Enable IO for frozen
PE */
+#define VFIO_EEH_PE_UNFREEZE_DMA 3 /* Enable DMA for frozen PE */
+#define VFIO_EEH_PE_GET_STATE 4 /* PE state retrieval */
+#define VFIO_EEH_PE_STATE_NORMAL 0 /* PE in functional state */
+#define VFIO_EEH_PE_STATE_RESET 1 /* PE reset in progress */
+#define VFIO_EEH_PE_STATE_STOPPED 2 /* Stopped DMA and IO */
+#define VFIO_EEH_PE_STATE_STOPPED_DMA 4 /* Stopped DMA only */
+#define VFIO_EEH_PE_STATE_UNAVAIL 5 /* State unavailable */
+#define VFIO_EEH_PE_RESET_DEACTIVATE 5 /* Deassert PE reset */
+#define VFIO_EEH_PE_RESET_HOT 6 /* Assert hot reset */
+#define VFIO_EEH_PE_RESET_FUNDAMENTAL 7 /* Assert fundamental reset */
+#define VFIO_EEH_PE_CONFIGURE 8 /* PE configuration */
+
+#define VFIO_EEH_PE_OP _IO(VFIO_TYPE, VFIO_BASE + 21)
+
/* ***************************************************************** */
#endif /* VFIO_H */
--
1.8.3.2
