[Qemu-ppc] [RFC PATCH v3 15/18] linux headers update for SPAPR (DDW + EEH)

[Alexey Kardashevskiy]

Since the changes are not in upstream yet, no tag or branch is specified here.

EEH is included to have a chance of catching problems with some shifted
IOCTL number or other random stuff like that.

Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
 linux-headers/linux/vfio.h | 58 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 26c218e..b3c3e9e 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
@@ -448,13 +451,66 @@ struct vfio_iommu_type1_dma_unmap {
  */
 struct vfio_iommu_spapr_tce_info {
        __u32 argsz;
-       __u32 flags;                    /* reserved for future use */
+       __u32 flags;
+#define VFIO_IOMMU_SPAPR_TCE_FLAG_DDW  1 /* Support dynamic windows */
        __u32 dma32_window_start;       /* 32 bit window start (bytes) */
        __u32 dma32_window_size;        /* 32 bit window size (bytes) */
+       __u32 current_windows;
+       __u32 windows_available;
+       __u32 page_size_mask;
 };
 
 #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)
+
+struct vfio_iommu_spapr_tce_create {
+       __u32 argsz;
+       __u32 flags;
+       /* in */
+       __u32 page_shift;
+       __u32 window_shift;
+       /* out */
+       __u64 start_addr;
+};
+#define VFIO_IOMMU_SPAPR_TCE_CREATE    _IO(VFIO_TYPE, VFIO_BASE + 18)
+
+struct vfio_iommu_spapr_tce_remove {
+       __u32 argsz;
+       __u32 flags;
+       /* in */
+       __u64 start_addr;
+};
+#define VFIO_IOMMU_SPAPR_TCE_REMOVE    _IO(VFIO_TYPE, VFIO_BASE + 19)
 /* ***************************************************************** */
 
 #endif /* VFIO_H */
-- 
2.0.0