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131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
/*
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*
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* (c) 2004,2005 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#ifndef __MACOS_SCSI_H__
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#define __MACOS_SCSI_H__
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#include <macos/traps.h>
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#include <macos/types.h>
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enum {
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op_inc = 1, /* transfer data, increment buffer pointer */
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op_no_inc = 2, /* transfer data, don't increment pointer */
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op_add = 3, /* add long to address */
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op_mode = 4, /* move long to address */
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op_loop = 5, /* decrement counter and loop if > 0 */
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op_nop = 6, /* no operation */
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op_stop = 7, /* stop TIB execution */
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op_comp = 8, /* compare SCSI data with memory */
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};
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enum {
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scCommErr = 2, /* Communications error, operation timeout */
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scBadParmsErr = 4, /* Unrecognized TIB instruction */
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scPhaseErr = 5, /* Phase error on the SCSI bus */
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scCompareErr = 6, /* Comparison error from scComp instruction */
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};
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enum {
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scsiErrorBase = -7936
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};
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enum {
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scsiBusy = scsiErrorBase + 49,
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};
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typedef struct TIB { /* Transfer Instruction Block */
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short opcode; /* operation code */
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int param1; /* 1st parameter */
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int param2; /* 2nd parameter */
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} __attribute__((packed)) TIB_t;
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#ifdef __mc68000__
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static inline OSErr SCSICmd(void* buffer, short count)
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{
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register OSErr ret asm("%%d0");
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asm(" clr.w -(%%sp)\n"
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" move.l %1, -(%%sp)\n"
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" move.w %2, -(%%sp)\n"
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SCSIDispatch(_SCSICmd)
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: "=d" (ret) : "g" (buffer), "g" (count) : UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSIComplete(short *stat, short *message, unsigned long wait)
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{
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register OSErr ret asm("%%d0");
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asm("clr.w -(%%sp)\n"
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" move.l %0, -(%%sp)\n"
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" move.l %1, -(%%sp)\n"
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" move.l %2, -(%%sp)\n"
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SCSIDispatch(_SCSIComplete)
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: "=d" (ret) : "g" (stat), "g" (message), "g" (wait) : UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSIGet(void)
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{
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register OSErr ret asm("%%d0");
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asm("clr.w -(%%sp)\n"
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SCSIDispatch(_SCSIGet)
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: "=d" (ret) :: UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSIRead(void *tibPtr)
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{
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register OSErr ret asm("%%d0");
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asm("clr.w -(%%sp)\n"
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" move.l %1, -(%%sp)\n"
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SCSIDispatch(_SCSIRead)
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: "=d" (ret) : "g" (tibPtr) : UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSIReset(void)
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{
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register OSErr ret asm("%%d0");
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asm("clr.w -(%%sp)\n"
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SCSIDispatch(_SCSIReset)
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: "=d" (ret) :: UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSISelect(short targetID)
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{
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register OSErr ret asm("%%d0");
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asm("move.w %1, %%d0\n"
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" clr.w -(%%sp)\n"
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" move.w %%d0, -(%%sp)\n"
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SCSIDispatch(_SCSISelect)
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: "=d" (ret) : "g" (targetID) : UNPRESERVED_REGS );
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return ret;
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}
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static inline OSErr SCSIStat(void)
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{
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register OSErr ret asm("%%d0");
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asm("clr.w -(%%sp)\n"
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SCSIDispatch(_SCSIStat)
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: "=d" (ret) :: UNPRESERVED_REGS );
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return ret;
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}
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#endif /* __mc68000__ */
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#endif /* __MACOS_SCSI_H__ */
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