summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/machine/scsi.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/emu/machine/scsi.c')
-rw-r--r--src/emu/machine/scsi.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/src/emu/machine/scsi.c b/src/emu/machine/scsi.c
new file mode 100644
index 00000000000..f01f60d5390
--- /dev/null
+++ b/src/emu/machine/scsi.c
@@ -0,0 +1,119 @@
+#include "scsi.h"
+
+void SCSIAllocInstance( SCSIClass *scsiClass, SCSIInstance **instance, int diskId )
+{
+ scsiClass->dispatch( SCSIOP_ALLOC_INSTANCE, scsiClass, diskId, instance );
+}
+
+void SCSIDeleteInstance( SCSIInstance *instance )
+{
+ instance->scsiClass->dispatch( SCSIOP_DELETE_INSTANCE, instance, 0, NULL );
+}
+
+void SCSISetDevice( SCSIInstance *instance, void *device )
+{
+ instance->scsiClass->dispatch( SCSIOP_SET_DEVICE, instance, 0, device );
+}
+
+void SCSIGetDevice( SCSIInstance *instance, void **device )
+{
+ instance->scsiClass->dispatch( SCSIOP_GET_DEVICE, instance, 0, device );
+}
+
+void SCSIReset( SCSIInstance *instance )
+{
+ instance->scsiClass->dispatch( SCSIOP_RESET_DEVICE, instance, 0, NULL );
+}
+
+void SCSIExecCommand( SCSIInstance *instance, int *resultLength )
+{
+ *resultLength = instance->scsiClass->dispatch( SCSIOP_EXEC_COMMAND, instance, 0, NULL );
+}
+
+void SCSISetCommand( SCSIInstance *instance, UINT8 *command, int commandLength )
+{
+ instance->scsiClass->dispatch( SCSIOP_SET_COMMAND, instance, commandLength, command );
+}
+
+void SCSIGetCommand( SCSIInstance *instance, UINT8 **command, int *commandLength )
+{
+ *commandLength = instance->scsiClass->dispatch( SCSIOP_GET_COMMAND, instance, 0, command );
+}
+
+void SCSIWriteData( SCSIInstance *instance, void *data, int dataLength )
+{
+ instance->scsiClass->dispatch( SCSIOP_WRITE_DATA, instance, dataLength, data );
+}
+
+void SCSIReadData( SCSIInstance *instance, void *data, int dataLength )
+{
+ instance->scsiClass->dispatch( SCSIOP_READ_DATA, instance, dataLength, data );
+}
+
+void SCSISetPhase( SCSIInstance *instance, int phase )
+{
+ instance->scsiClass->dispatch( SCSIOP_SET_PHASE, instance, phase, NULL );
+}
+
+void SCSIGetPhase( SCSIInstance *instance, int *phase )
+{
+ *phase = instance->scsiClass->dispatch( SCSIOP_GET_PHASE, instance, 0, NULL );
+}
+
+int SCSIBase( SCSIClass *scsiClass, int operation, void *file, INT64 intparm, UINT8 *ptrparm )
+{
+ return scsiClass->baseClass->dispatch( operation, file, intparm, ptrparm );
+}
+
+SCSIInstance *SCSIMalloc( SCSIClass *scsiClass )
+{
+ SCSIInstance *scsiInstance = (SCSIInstance *) malloc_or_die( SCSISizeof( scsiClass ) );
+ scsiInstance->scsiClass = scsiClass;
+ return scsiInstance;
+}
+
+void *SCSIThis( SCSIClass *scsiClass, SCSIInstance *instance )
+{
+ if( instance != NULL )
+ {
+ int sizeofBase = sizeof( SCSIInstance );
+
+ while( scsiClass->baseClass != NULL )
+ {
+ scsiClass = scsiClass->baseClass;
+ sizeofBase += scsiClass->sizeofData;
+ }
+
+ return ( (UINT8*)instance ) + sizeofBase;
+ }
+
+ return NULL;
+}
+
+int SCSISizeof( SCSIClass *scsiClass )
+{
+ int sizeofData = sizeof( SCSIInstance );
+
+ while( scsiClass != NULL )
+ {
+ sizeofData += scsiClass->sizeofData;
+ scsiClass = scsiClass->baseClass;
+ }
+
+ return sizeofData;
+}
+
+int SCSILengthFromUINT8( UINT8 *length )
+{
+ if( *length == 0 )
+ {
+ return 256;
+ }
+
+ return *length;
+}
+
+int SCSILengthFromUINT16( UINT8 *length )
+{
+ return ( *(length) << 8 ) | *(length + 1 );
+}