mirror of
https://github.com/ipxe/ipxe
synced 2025-12-29 02:52:36 +03:00
42 lines
777 B
C
42 lines
777 B
C
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#ifndef _BITS_UART_H
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#define _BITS_UART_H
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/** @file
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*
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* 16550-compatible UART
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/io.h>
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/**
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* Write to UART register
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*
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* @v uart UART
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* @v addr Register address
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* @v data Data
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*/
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static inline __attribute__ (( always_inline )) void
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uart_write ( struct uart *uart, unsigned int addr, uint8_t data ) {
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outb ( data, ( uart->base + addr ) );
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}
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/**
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* Read from UART register
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*
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* @v uart UART
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* @v addr Register address
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* @ret data Data
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*/
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static inline __attribute__ (( always_inline )) uint8_t
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uart_read ( struct uart *uart, unsigned int addr ) {
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return inb ( uart->base + addr );
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}
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extern int uart_select ( struct uart *uart, unsigned int port );
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#endif /* _BITS_UART_H */
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