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Wait bus is not busy
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parent
6df85e6083
commit
5eb95f1419
@ -11,17 +11,45 @@
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#include <macos/types.h>
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#include <macos/errors.h>
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#include <macos/scsi.h>
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#include <macos/lowmem.h>
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#include "libscsi.h"
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#define COMPLETION_TIMEOUT 300
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#define SCSI_BUSY (1 << 6)
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#define SCSI_SEL (1 << 1)
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static inline int scsi_busy(void)
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{
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return (SCSIStat() & (SCSI_BUSY | SCSI_SEL)) != 0;
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}
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static inline int scsi_wait_bus()
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{
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int timeout;
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timeout = Ticks + 300;
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while (scsi_busy())
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if (Ticks > timeout)
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return scsiBusy;
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return noErr;
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}
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int scsi_command(int target, char* cdb, int count, TIB_t* tib)
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{
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int err;
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short stat;
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short message;
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err = scsi_wait_bus();
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if (err != noErr)
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{
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printf("SCSI bus is busy\n");
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return err;
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}
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err = SCSIGet();
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if (err != noErr)
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{
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