+/**\r
+ This function can be used to obtain information about a specified channel.\r
+ It's usually used by IDE Bus driver during enumeration process.\r
+\r
+ @param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
+ @param Channel Channel number (0 based, either 0 or 1)\r
+ @param Enabled TRUE if the channel is enabled. If the channel is disabled,\r
+ then it will no be enumerated.\r
+ @param MaxDevices The Max number of IDE devices that the bus driver can expect\r
+ on this channel. For ATA/ATAPI, this number is either 1 or 2.\r
+\r
+ @retval EFI_SUCCESS Success to get channel information\r
+ @retval EFI_INVALID_PARAMETER Invalid channel id.\r
+**/\r