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https://github.com/86Box/86Box.git
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0f035b42ea
Made ATAPI derived from SCSI. Added proper S/G emulation for SCSI DMA. Added SCSI CD-ROM emulation, preserving all the former ATAPI commands as well.
24 lines
602 B
C
24 lines
602 B
C
#ifndef _SCATTERGATHER_H_
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#define _SCATTERGATHER_H_
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typedef struct SGSEG
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{
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uint8_t Address[128*512];
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uint32_t Length;
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} SGSEG;
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typedef struct SGBUF
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{
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const SGSEG *SegmentPtr;
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unsigned SegmentNum;
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unsigned SegmentIndex;
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uint8_t *SegmentPtrCur;
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uint32_t SegmentLeft;
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} SGBUF;
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uint32_t SegmentBufferCopy(SGBUF *SegmentDst, SGBUF *SegmentSrc, uint32_t Copy);
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uint8_t *SegmentBufferGetNextSegment(SGBUF *SegmentBuf, uint32_t Segment);
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uint32_t SegmentBufferAdvance(SGBUF *SegmentBuf, uint32_t Advance);
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void SegmentBufferInit(SGBUF *SegmentBuf, const SGSEG *SegmentPtr, uint32_t Segments);
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#endif |