void serial_configure_fifo_buffer(unsigned short com){
/*Bit: |7 6 |5 |4 |3 |2 |1 |0 |
* |lvl |bs|r |dma|clt|clr|e |
* |1 1 |0 |0 |0 | 1 | 1 |1 | = 0xC7
*/
outb(SERIAL_FIFO_COMMAND_PORT(com), 0xC7);
}
/** serial_configure_buffers
* Configure the FIFOs of the given serial port. The port is set to have a
* FIFO enabled, both transmission and reciever queues cleared, with
* 14 byte FIFOs
*/
void serial_configure_buffers(unsigned int com)
{
/* Bit: | 7 6 | 5 | 4 | 3 | 2 | 1 | 0 |
* Content: | lvl | bs | r | dma | clt | clr | e |
* Value: | 1 1 | 0 | 0 | 0 | 1 | 1 | 1 | = 0xC7
*/
outb(SERIAL_FIFO_COMMAND_PORT(com), 0xC7);
}
/** serial_configure_buffers:
* Configures the buffers of the given serial port.
* lvl: How many bytes should be stored in the FIFO buffers
* bs: If the buffers should be 16 or 64 bytes large
* r: Reserved for future use
* dma: How the serial port data should be accessed
* clt: Clear the transmission FIFO buffer
* clr: Clear the receiver FIFO buffer
* e: If the FIFO buffer should be enabled or not
*/
void serial_configure_buffers(unsigned short com){
/*
* Bit: | 7 6 | 5 | 4 | 3 | 2 | 1 | 0 |
* Content: | lvl | bs | r | dma | clt | clr | e |
* Value: | 1 1 | 0 | 0 | 0 | 1 | 1 | 1 | = 0xC7
*
* Enables FIFO
* Clear both receiver and transmission FIFO queues
* Use 14 bytes as size of queue */
outb(SERIAL_FIFO_COMMAND_PORT(com), 0xC7);
}
/**
* Configures the fifo buffer of the given serial port. The port is set as:
* FIFO enabled
* Both receiver and transmission FIFO queues cleared
* Use 14 bytes as the size of queue
*/
void serial_configure_fifo(unsigned short com, unsigned char config)
{
outb(SERIAL_FIFO_COMMAND_PORT(com), config);
}
void serial_configure_fifo(uint16_t com){
outb(SERIAL_FIFO_COMMAND_PORT(com), 0xC7);
}