39 lines
959 B
C
39 lines
959 B
C
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#define FDC_BSIZE 512
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#define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */
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#define FDC_NSTATUS 10
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#if !defined(LOCORE)
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struct fdcio {
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/*
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* 82072 (sun4c) and 82077 (sun4m) controllers have different
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* register layout; so we cache some here.
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*/
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volatile u_int8_t *fdcio_reg_msr;
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volatile u_int8_t *fdcio_reg_fifo;
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volatile u_int8_t *fdcio_reg_dor; /* 82077 only */
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/*
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* Interrupt state.
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*/
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int fdcio_istate;
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/*
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* IO state.
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*/
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char *fdcio_data; /* pseudo-dma data */
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int fdcio_tc; /* pseudo-dma Terminal Count */
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u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */
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int fdcio_nstat; /* # of valid status bytes */
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};
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#endif /* LOCORE */
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/* istate values */
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#define ISTATE_IDLE 0 /* No HW interrupt expected */
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#define ISTATE_SPURIOUS 1 /* Spurious HW interrupt detected */
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#define ISTATE_SENSEI 2 /* Do SENSEI on next HW interrupt */
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#define ISTATE_DMA 3 /* Pseudo-DMA in progress */
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#define FDIOCEJECT _IO('f', 24)
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