[PATCH v3] vfio: fix compile on older kernels

[Anatoly Burakov <anatoly.burakov@intel.com>]

From: "Burakov, Anatoly" <anatoly.burakov@intel.com>

Fixing compile failures for kernels without sPAPR IOMMU support.

Fixes: 0fe9830b5345 ("eal/ppc: support sPAPR IOMMU for vfio-pci")

Signed-off-by: Burakov, Anatoly <anatoly.burakov@intel.com>
---

v3: fixed compile on kernels where SPAPR_v2 is not present but SPAPR is

v2: fixed newlines

 lib/librte_eal/linuxapp/eal/eal_vfio.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h
index ac31a4f..0bf85bb 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.h
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h
@@ -59,22 +59,44 @@
 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
+
+/* SPAPR_v2 is not present, but SPAPR might be */
+#ifndef VFIO_SPAPR_TCE_IOMMU
+#define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
+
+struct vfio_iommu_spapr_tce_info {
+	uint32_t argsz;
+	uint32_t flags;
+	uint32_t dma32_window_start;
+	uint32_t dma32_window_size;
+	struct vfio_iommu_spapr_tce_ddw_info ddw;
+};
+#endif
+
 struct vfio_iommu_spapr_register_memory {
 	uint32_t argsz;
 	uint32_t flags;
 	uint64_t vaddr;
 	uint64_t size;
 };
+
 struct vfio_iommu_spapr_tce_create {
 	uint32_t argsz;
 	uint32_t page_shift;
 	uint64_t window_size;
 	uint32_t levels;
 };
+
 struct vfio_iommu_spapr_tce_remove {
 	uint32_t argsz;
 	uint64_t start_addr;
 };
+
+struct vfio_iommu_spapr_tce_ddw_info {
+	uint64_t pgsizes;
+	uint32_t max_dynamic_windows_supported;
+	uint32_t levels;
+};
 #else
 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
 #endif
-- 
2.9.3