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update Linux headers to 4.6

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-03-25 13:15:01 +01:00
parent 92741fc4b6
commit b89485a52e
14 changed files with 140 additions and 12 deletions
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92
linux-headers/linux/vfio.h
View file

@ -59,6 +59,33 @@
#define VFIO_TYPE (';')
#define VFIO_BASE 100
/*
* For extension of INFO ioctls, VFIO makes use of a capability chain
* designed after PCI/e capabilities. A flag bit indicates whether
* this capability chain is supported and a field defined in the fixed
* structure defines the offset of the first capability in the chain.
* This field is only valid when the corresponding bit in the flags
* bitmap is set. This offset field is relative to the start of the
* INFO buffer, as is the next field within each capability header.
* The id within the header is a shared address space per INFO ioctl,
* while the version field is specific to the capability id. The
* contents following the header are specific to the capability id.
*/
struct vfio_info_cap_header {
__u16 id; /* Identifies capability */
__u16 version; /* Version specific to the capability ID */
__u32 next; /* Offset of next capability */
};
/*
* Callers of INFO ioctls passing insufficiently sized buffers will see
* the capability chain flag bit set, a zero value for the first capability
* offset (if available within the provided argsz), and argsz will be
* updated to report the necessary buffer size. For compatibility, the
* INFO ioctl will not report error in this case, but the capability chain
* will not be available.
*/
/* -------- IOCTLs for VFIO file descriptor (/dev/vfio/vfio) -------- */
/**
@ -194,13 +221,73 @@ struct vfio_region_info {
#define VFIO_REGION_INFO_FLAG_READ (1 << 0) /* Region supports read */
#define VFIO_REGION_INFO_FLAG_WRITE (1 << 1) /* Region supports write */
#define VFIO_REGION_INFO_FLAG_MMAP (1 << 2) /* Region supports mmap */
#define VFIO_REGION_INFO_FLAG_CAPS (1 << 3) /* Info supports caps */
__u32 index; /* Region index */
__u32 resv; /* Reserved for alignment */
__u32 cap_offset; /* Offset within info struct of first cap */
__u64 size; /* Region size (bytes) */
__u64 offset; /* Region offset from start of device fd */
};
#define VFIO_DEVICE_GET_REGION_INFO _IO(VFIO_TYPE, VFIO_BASE + 8)
/*
* The sparse mmap capability allows finer granularity of specifying areas
* within a region with mmap support. When specified, the user should only
* mmap the offset ranges specified by the areas array. mmaps outside of the
* areas specified may fail (such as the range covering a PCI MSI-X table) or
* may result in improper device behavior.
*
* The structures below define version 1 of this capability.
*/
#define VFIO_REGION_INFO_CAP_SPARSE_MMAP 1
struct vfio_region_sparse_mmap_area {
__u64 offset; /* Offset of mmap'able area within region */
__u64 size; /* Size of mmap'able area */
};
struct vfio_region_info_cap_sparse_mmap {
struct vfio_info_cap_header header;
__u32 nr_areas;
__u32 reserved;
struct vfio_region_sparse_mmap_area areas[];
};
/*
* The device specific type capability allows regions unique to a specific
* device or class of devices to be exposed. This helps solve the problem for
* vfio bus drivers of defining which region indexes correspond to which region
* on the device, without needing to resort to static indexes, as done by
* vfio-pci. For instance, if we were to go back in time, we might remove
* VFIO_PCI_VGA_REGION_INDEX and let vfio-pci simply define that all indexes
* greater than or equal to VFIO_PCI_NUM_REGIONS are device specific and we'd
* make a "VGA" device specific type to describe the VGA access space. This
* means that non-VGA devices wouldn't need to waste this index, and thus the
* address space associated with it due to implementation of device file
* descriptor offsets in vfio-pci.
*
* The current implementation is now part of the user ABI, so we can't use this
* for VGA, but there are other upcoming use cases, such as opregions for Intel
* IGD devices and framebuffers for vGPU devices. We missed VGA, but we'll
* use this for future additions.
*
* The structure below defines version 1 of this capability.
*/
#define VFIO_REGION_INFO_CAP_TYPE 2
struct vfio_region_info_cap_type {
struct vfio_info_cap_header header;
__u32 type; /* global per bus driver */
__u32 subtype; /* type specific */
};
#define VFIO_REGION_TYPE_PCI_VENDOR_TYPE (1 << 31)
#define VFIO_REGION_TYPE_PCI_VENDOR_MASK (0xffff)
/* 8086 Vendor sub-types */
#define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION (1)
#define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG (2)
#define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG (3)
/**
* VFIO_DEVICE_GET_IRQ_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 9,
* struct vfio_irq_info)
@ -336,7 +423,8 @@ enum {
* between described ranges are unimplemented.
*/
VFIO_PCI_VGA_REGION_INDEX,
VFIO_PCI_NUM_REGIONS
VFIO_PCI_NUM_REGIONS = 9 /* Fixed user ABI, region indexes >=9 use */
/* device specific cap to define content. */
};
enum {