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Annotation of q_a/samples/ddk/portio/gpioctl.h, revision 1.1.1.1

1.1       root        1: // gpioctl.h    Include file for Generic Port I/O Example Driver
                      2: //
                      3: // Define the IOCTL codes we will use.  The IOCTL code contains a command
                      4: // identifier, plus other information about the device, the type of access
                      5: // with which the file must have been opened, and the type of buffering.
                      6: //
                      7: // Robert B. Nelson (Microsoft)     March 1, 1993
                      8: 
                      9: // Device type           -- in the "User Defined" range."
                     10: #define GPD_TYPE 40000
                     11: 
                     12: // The IOCTL function codes from 0x800 to 0xFFF are for customer use.
                     13: 
                     14: #define IOCTL_GPD_READ_PORT_UCHAR \
                     15:     CTL_CODE( GPD_TYPE, 0x900, METHOD_BUFFERED, FILE_READ_ACCESS )
                     16: 
                     17: #define IOCTL_GPD_READ_PORT_USHORT \
                     18:     CTL_CODE( GPD_TYPE, 0x901, METHOD_BUFFERED, FILE_READ_ACCESS )
                     19: 
                     20: #define IOCTL_GPD_READ_PORT_ULONG \
                     21:     CTL_CODE( GPD_TYPE, 0x902, METHOD_BUFFERED, FILE_READ_ACCESS )
                     22: 
                     23: #define IOCTL_GPD_WRITE_PORT_UCHAR \
                     24:     CTL_CODE(GPD_TYPE,  0x910, METHOD_BUFFERED, FILE_WRITE_ACCESS)
                     25: 
                     26: #define IOCTL_GPD_WRITE_PORT_USHORT \
                     27:     CTL_CODE(GPD_TYPE,  0x911, METHOD_BUFFERED, FILE_WRITE_ACCESS)
                     28: 
                     29: #define IOCTL_GPD_WRITE_PORT_ULONG \
                     30:     CTL_CODE(GPD_TYPE,  0x912, METHOD_BUFFERED, FILE_WRITE_ACCESS)
                     31: 
                     32: typedef struct  _GENPORT_WRITE_INPUT {
                     33:     ULONG   PortNumber;     // Port # to write to
                     34:     union   {               // Data to be output to port
                     35:         ULONG   LongData;
                     36:         USHORT  ShortData;
                     37:         UCHAR   CharData;
                     38:     };
                     39: }   GENPORT_WRITE_INPUT;

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