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70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
#include <initguid.h>
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DEFINE_GUID (GUID_DEVINTERFACE_IVSHMEM,
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0xdf576976,0x569d,0x4672,0x95,0xa0,0xf5,0x7e,0x4e,0xa0,0xb2,0x10);
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// {df576976-569d-4672-95a0-f57e4ea0b210}
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typedef UINT16 IVSHMEM_PEERID;
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typedef UINT64 IVSHMEM_SIZE;
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#define IVSHMEM_CACHE_NONCACHED 0
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#define IVSHMEM_CACHE_CACHED 1
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#define IVSHMEM_CACHE_WRITECOMBINED 2
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/*
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This structure is for use with the IOCTL_IVSHMEM_REQUEST_MMAP IOCTL
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*/
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typedef struct IVSHMEM_MMAP_CONFIG
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{
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UINT8 cacheMode; // the caching mode of the mapping, see IVSHMEM_CACHE_* for options
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}
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IVSHMEM_MMAP_CONFIG, *PIVSHMEM_MMAP_CONFIG;
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/*
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This structure is for use with the IOCTL_IVSHMEM_REQUEST_MMAP IOCTL
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*/
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typedef struct IVSHMEM_MMAP
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{
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IVSHMEM_PEERID peerID; // our peer id
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IVSHMEM_SIZE size; // the size of the memory region
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PVOID ptr; // pointer to the memory region
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UINT16 vectors; // the number of vectors available
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}
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IVSHMEM_MMAP, *PIVSHMEM_MMAP;
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/*
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This structure is for use with the IOCTL_IVSHMEM_RING_DOORBELL IOCTL
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*/
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typedef struct IVSHMEM_RING
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{
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IVSHMEM_PEERID peerID; // the id of the peer to ring
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UINT16 vector; // the doorbell to ring
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}
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IVSHMEM_RING, *PIVSHMEM_RING;
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/*
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This structure is for use with the IOCTL_IVSHMEM_REGISTER_EVENT IOCTL
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Please Note:
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- The IVSHMEM driver has a hard limit of 32 events.
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- Events that are singleShot are released after they have been set.
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- At this time repeating events are only released when the driver device
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handle is closed, closing the event handle doesn't release it from the
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drivers list. While this won't cause a problem in the driver, it will
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cause you to run out of event slots.
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*/
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typedef struct IVSHMEM_EVENT
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{
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UINT16 vector; // the vector that triggers the event
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HANDLE event; // the event to trigger
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BOOLEAN singleShot; // set to TRUE if you want the driver to only trigger this event once
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}
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IVSHMEM_EVENT, *PIVSHMEM_EVENT;
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#define IOCTL_IVSHMEM_REQUEST_PEERID CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_IVSHMEM_REQUEST_SIZE CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_IVSHMEM_REQUEST_MMAP CTL_CODE(FILE_DEVICE_UNKNOWN, 0x802, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_IVSHMEM_RELEASE_MMAP CTL_CODE(FILE_DEVICE_UNKNOWN, 0x803, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_IVSHMEM_RING_DOORBELL CTL_CODE(FILE_DEVICE_UNKNOWN, 0x804, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_IVSHMEM_REGISTER_EVENT CTL_CODE(FILE_DEVICE_UNKNOWN, 0x805, METHOD_BUFFERED, FILE_ANY_ACCESS)
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