VDHPortIO

Description

Perform I/O to a specified port.

This function is used to perform input/output operations to a specified local port.

Parameters
Pointer to a PORT_IO structure.

Exit
Return code.

Structures

typedef struct port_io_s
{
   ulong_t port;   (Input)
   ulong_t data;   (Input/Output)
   ulong_t flags;  (Input)
} PORT_IO;

port

indicates which port to read to, or write from.
data
contains the data read from a read request, or the data to write if a write request.
flags
indicate what operation to perform.

IO_READ_BYTE

Read a byte from the port
IO_READ_WORD
Read a word from the port
IO_READ_DWORD
Read a dword from the port
IO_WRITE_BYTE
Write a byte to the port
IO_WRITE_WORD
Write a word to the port
IO_WRITE_DWORD
Write a dword to the port
Notes
None.

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