[PATCH 2/5] linux headers: Import virtio-iommu header from Linux

[Jean-Philippe Brucker]

Import virtio-iommu topology definitions from Linux. These changes
haven't been upstreamed yet.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 include/standard-headers/linux/virtio_iommu.h | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/include/standard-headers/linux/virtio_iommu.h 
b/include/standard-headers/linux/virtio_iommu.h
index b9443b83a13..ee158c37c36 100644
--- a/include/standard-headers/linux/virtio_iommu.h
+++ b/include/standard-headers/linux/virtio_iommu.h
@@ -16,6 +16,7 @@
 #define VIRTIO_IOMMU_F_BYPASS                  3
 #define VIRTIO_IOMMU_F_PROBE                   4
 #define VIRTIO_IOMMU_F_MMIO                    5
+#define VIRTIO_IOMMU_F_TOPOLOGY                        6
 
 struct virtio_iommu_range_64 {
        uint64_t                                        start;
@@ -27,6 +28,17 @@ struct virtio_iommu_range_32 {
        uint32_t                                        end;
 };
 
+struct virtio_iommu_topo_config {
+       /* Number of topology description structures */
+       uint16_t                                        count;
+       /*
+        * Offset to the first topology description structure
+        * (virtio_iommu_topo_*) from the start of the virtio_iommu config
+        * space. Aligned on 8 bytes.
+        */
+       uint16_t                                        offset;
+};
+
 struct virtio_iommu_config {
        /* Supported page sizes */
        uint64_t                                        page_size_mask;
@@ -36,6 +48,38 @@ struct virtio_iommu_config {
        struct virtio_iommu_range_32            domain_range;
        /* Probe buffer size */
        uint32_t                                        probe_size;
+       struct virtio_iommu_topo_config         topo_config;
+};
+
+#define VIRTIO_IOMMU_TOPO_PCI_RANGE            0x1
+#define VIRTIO_IOMMU_TOPO_MMIO                 0x2
+
+struct virtio_iommu_topo_pci_range {
+       /* VIRTIO_IOMMU_TOPO_PCI_RANGE */
+       uint8_t                                 type;
+       uint8_t                                 reserved;
+       /* Length of this structure */
+       uint16_t                                        length;
+       /* First endpoint ID in the range */
+       uint32_t                                        endpoint_start;
+       /* PCI domain number */
+       uint16_t                                        segment;
+       /* PCI Bus:Device.Function range */
+       uint16_t                                        bdf_start;
+       uint16_t                                        bdf_end;
+       uint16_t                                        padding;
+};
+
+struct virtio_iommu_topo_mmio {
+       /* VIRTIO_IOMMU_TOPO_MMIO */
+       uint8_t                                 type;
+       uint8_t                                 reserved;
+       /* Length of this structure */
+       uint16_t                                        length;
+       /* Endpoint ID */
+       uint32_t                                        endpoint;
+       /* Address of the first MMIO region */
+       uint64_t                                        address;
 };
 
 /* Request types */
-- 
2.28.0