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Diffstat (limited to 'private/inc/ntddvdm.h')
-rw-r--r-- | private/inc/ntddvdm.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/private/inc/ntddvdm.h b/private/inc/ntddvdm.h new file mode 100644 index 000000000..ef1885b39 --- /dev/null +++ b/private/inc/ntddvdm.h @@ -0,0 +1,44 @@ +/*++ BUILD Version: 0001 // Increment this if a change has global effects + +Copyright (c) 1990-1996 Microsoft Corporation + +Module Name: + + ntddvdm.h + +Abstract: + + This is the include file that defines all constants and types for + accessing the NTVDM kernel mode virtual devices. + +Author: + + William Hsieh (williamh) 31-May-1996 + +Revision History: + +--*/ + +// +// NtDeviceIoControlFile IoControlCode values for this device. +// +// Warning: Remember that the low two bits of the code specify how the +// buffers are passed to the driver! +// +// +#define IOCTL_VDM_BASE FILE_DEVICE_VDM + +// +// 32 VDDs. Each VDD has possible 127 private ioctl code +// These values are based on the fact that there are 12 bits reserved +// for function id in each IOCTL code. +// +#define IOCTL_VDM_GROUP_MASK 0xF80 +#define IOCTL_VDM_GROUP_SIZE 127 + +#define IOCTL_VDM_PARALLEL_GROUP 0 + +#define IOCTL_VDM_PARALLEL_BASE IOCTL_VDM_BASE + IOCTL_VDM_PARALLEL_GROUP * IOCTL_VDM_GROUP_SIZE +#define IOCTL_VDM_PAR_WRITE_DATA_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 1, METHOD_BUFFERED, FILE_ANY_ACCESS) +#define IOCTL_VDM_PAR_WRITE_CONTROL_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS) +#define IOCTL_VDM_PAR_READ_STATUS_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 3, METHOD_BUFFERED, FILE_ANY_ACCESS) |