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8406115834
Access to the gpxe.org and etherboot.org domains and associated resources has been revoked by the registrant of the domain. Work around this problem by renaming project from gPXE to iPXE, and updating URLs to match. Also update README, LOG and COPYRIGHTS to remove obsolete information. Signed-off-by: Michael Brown <mcb30@ipxe.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#ifndef _IPXE_BITBASH_H
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#define _IPXE_BITBASH_H
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/** @file
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*
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* Bit-bashing interfaces
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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struct bit_basher;
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/** Bit-bashing operations */
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struct bit_basher_operations {
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/**
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* Set/clear output bit
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*
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* @v basher Bit-bashing interface
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* @v bit_id Bit number
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* @v data Value to write
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*
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* @c data will be 0 if a logic 0 should be written (i.e. the
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* bit should be cleared), or -1UL if a logic 1 should be
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* written (i.e. the bit should be set). This is done so that
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* the method may simply binary-AND @c data with the
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* appropriate bit mask.
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*/
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void ( * write ) ( struct bit_basher *basher, unsigned int bit_id,
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unsigned long data );
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/**
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* Read input bit
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*
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* @v basher Bit-bashing interface
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* @v bit_id Bit number
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* @ret zero Input is a logic 0
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* @ret non-zero Input is a logic 1
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*/
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int ( * read ) ( struct bit_basher *basher, unsigned int bit_id );
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};
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/** A bit-bashing interface */
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struct bit_basher {
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/** Bit-bashing operations */
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struct bit_basher_operations *op;
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};
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extern void write_bit ( struct bit_basher *basher, unsigned int bit_id,
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unsigned long data );
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extern int read_bit ( struct bit_basher *basher, unsigned int bit_id );
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#endif /* _IPXE_BITBASH_H */
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