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[c-host] take just the ivshmem headers and omit the kvm-guest submodule

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This commit is contained in:
Geoffrey McRae
2019-05-28 14:51:47 +10:00
parent 373d4ac932
commit 026bdb00f2
6 changed files with 59 additions and 7 deletions
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56
vendor/ivshmem/ivshmem.h vendored Normal file
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@@ -0,0 +1,56 @@
#include <initguid.h>
DEFINE_GUID (GUID_DEVINTERFACE_IVSHMEM,
0xdf576976,0x569d,0x4672,0x95,0xa0,0xf5,0x7e,0x4e,0xa0,0xb2,0x10);
// {df576976-569d-4672-95a0-f57e4ea0b210}
typedef UINT16 IVSHMEM_PEERID;
typedef UINT64 IVSHMEM_SIZE;
/*
This structure is for use with the IOCTL_IVSHMEM_REQUEST_MMAP IOCTL
*/
typedef struct IVSHMEM_MMAP
{
IVSHMEM_PEERID peerID; // our peer id
IVSHMEM_SIZE size; // the size of the memory region
PVOID ptr; // pointer to the memory region
UINT16 vectors; // the number of vectors available
}
IVSHMEM_MMAP, *PIVSHMEM_MMAP;
/*
This structure is for use with the IOCTL_IVSHMEM_RING_DOORBELL IOCTL
*/
typedef struct IVSHMEM_RING
{
IVSHMEM_PEERID peerID; // the id of the peer to ring
UINT16 vector; // the doorbell to ring
}
IVSHMEM_RING, *PIVSHMEM_RING;
/*
This structure is for use with the IOCTL_IVSHMEM_REGISTER_EVENT IOCTL
Please Note:
- The IVSHMEM driver has a hard limit of 32 events.
- Events that are singleShot are released after they have been set.
- At this time repeating events are only released when the driver device
handle is closed, closing the event handle doesn't release it from the
drivers list. While this won't cause a problem in the driver, it will
cause you to run out of event slots.
*/
typedef struct IVSHMEM_EVENT
{
UINT16 vector; // the vector that triggers the event
HANDLE event; // the event to trigger
BOOLEAN singleShot; // set to TRUE if you want the driver to only trigger this event once
}
IVSHMEM_EVENT, *PIVSHMEM_EVENT;
#define IOCTL_IVSHMEM_REQUEST_PEERID CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IVSHMEM_REQUEST_SIZE CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IVSHMEM_REQUEST_MMAP CTL_CODE(FILE_DEVICE_UNKNOWN, 0x802, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IVSHMEM_RELEASE_MMAP CTL_CODE(FILE_DEVICE_UNKNOWN, 0x803, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IVSHMEM_RING_DOORBELL CTL_CODE(FILE_DEVICE_UNKNOWN, 0x804, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IVSHMEM_REGISTER_EVENT CTL_CODE(FILE_DEVICE_UNKNOWN, 0x805, METHOD_BUFFERED, FILE_ANY_ACCESS)