diff options
Diffstat (limited to 'linux-headers/linux/vfio.h')
| -rw-r--r-- | linux-headers/linux/vfio.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h index 4312e961ff..3a0a305c8c 100644 --- a/linux-headers/linux/vfio.h +++ b/linux-headers/linux/vfio.h @@ -301,6 +301,16 @@ struct vfio_region_info_cap_type { #define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG (2) #define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG (3) +/* + * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped + * which allows direct access to non-MSIX registers which happened to be within + * the same system page. + * + * Even though the userspace gets direct access to the MSIX data, the existing + * VFIO_DEVICE_SET_IRQS interface must still be used for MSIX configuration. + */ +#define VFIO_REGION_INFO_CAP_MSIX_MAPPABLE 3 + /** * VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9, * struct vfio_irq_info) @@ -503,6 +513,68 @@ struct vfio_pci_hot_reset { #define VFIO_DEVICE_PCI_HOT_RESET _IO(VFIO_TYPE, VFIO_BASE + 13) +/** + * VFIO_DEVICE_QUERY_GFX_PLANE - _IOW(VFIO_TYPE, VFIO_BASE + 14, + * struct vfio_device_query_gfx_plane) + * + * Set the drm_plane_type and flags, then retrieve the gfx plane info. + * + * flags supported: + * - VFIO_GFX_PLANE_TYPE_PROBE and VFIO_GFX_PLANE_TYPE_DMABUF are set + * to ask if the mdev supports dma-buf. 0 on support, -EINVAL on no + * support for dma-buf. + * - VFIO_GFX_PLANE_TYPE_PROBE and VFIO_GFX_PLANE_TYPE_REGION are set + * to ask if the mdev supports region. 0 on support, -EINVAL on no + * support for region. + * - VFIO_GFX_PLANE_TYPE_DMABUF or VFIO_GFX_PLANE_TYPE_REGION is set + * with each call to query the plane info. + * - Others are invalid and return -EINVAL. + * + * Note: + * 1. Plane could be disabled by guest. In that case, success will be + * returned with zero-initialized drm_format, size, width and height + * fields. + * 2. x_hot/y_hot is set to 0xFFFFFFFF if no hotspot information available + * + * Return: 0 on success, -errno on other failure. + */ +struct vfio_device_gfx_plane_info { + __u32 argsz; + __u32 flags; +#define VFIO_GFX_PLANE_TYPE_PROBE (1 << 0) +#define VFIO_GFX_PLANE_TYPE_DMABUF (1 << 1) +#define VFIO_GFX_PLANE_TYPE_REGION (1 << 2) + /* in */ + __u32 drm_plane_type; /* type of plane: DRM_PLANE_TYPE_* */ + /* out */ + __u32 drm_format; /* drm format of plane */ + __u64 drm_format_mod; /* tiled mode */ + __u32 width; /* width of plane */ + __u32 height; /* height of plane */ + __u32 stride; /* stride of plane */ + __u32 size; /* size of plane in bytes, align on page*/ + __u32 x_pos; /* horizontal position of cursor plane */ + __u32 y_pos; /* vertical position of cursor plane*/ + __u32 x_hot; /* horizontal position of cursor hotspot */ + __u32 y_hot; /* vertical position of cursor hotspot */ + union { + __u32 region_index; /* region index */ + __u32 dmabuf_id; /* dma-buf id */ + }; +}; + +#define VFIO_DEVICE_QUERY_GFX_PLANE _IO(VFIO_TYPE, VFIO_BASE + 14) + +/** + * VFIO_DEVICE_GET_GFX_DMABUF - _IOW(VFIO_TYPE, VFIO_BASE + 15, __u32) + * + * Return a new dma-buf file descriptor for an exposed guest framebuffer + * described by the provided dmabuf_id. The dmabuf_id is returned from VFIO_ + * DEVICE_QUERY_GFX_PLANE as a token of the exposed guest framebuffer. + */ + +#define VFIO_DEVICE_GET_GFX_DMABUF _IO(VFIO_TYPE, VFIO_BASE + 15) + /* -------- API for Type1 VFIO IOMMU -------- */ /** |